From 1ba5bf993c6a3142e18e68ea6452b347f9cb5635 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Tue, 5 Jul 2016 10:18:08 +0200 Subject: xfrm: fix crash in XFRM_MSG_GETSA netlink handler If we hit any of the error conditions inside xfrm_dump_sa(), then xfrm_state_walk_init() never gets called. However, we still call xfrm_state_walk_done() from xfrm_dump_sa_done(), which will crash because the state walk was never initialized properly. We can fix this by setting cb->args[0] only after we've processed the first element and checking this before calling xfrm_state_walk_done(). Fixes: d3623099d3 ("ipsec: add support of limited SA dump") Cc: Nicolas Dichtel Cc: Steffen Klassert Signed-off-by: Vegard Nossum Acked-by: Nicolas Dichtel Signed-off-by: Steffen Klassert diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index d516845..4fb04ce 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -896,7 +896,8 @@ static int xfrm_dump_sa_done(struct netlink_callback *cb) struct sock *sk = cb->skb->sk; struct net *net = sock_net(sk); - xfrm_state_walk_done(walk, net); + if (cb->args[0]) + xfrm_state_walk_done(walk, net); return 0; } @@ -921,8 +922,6 @@ static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb) u8 proto = 0; int err; - cb->args[0] = 1; - err = nlmsg_parse(cb->nlh, 0, attrs, XFRMA_MAX, xfrma_policy); if (err < 0) @@ -939,6 +938,7 @@ static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb) proto = nla_get_u8(attrs[XFRMA_PROTO]); xfrm_state_walk_init(walk, proto, filter); + cb->args[0] = 1; } (void) xfrm_state_walk(net, walk, dump_one_state, &info); -- cgit v0.10.2 From b46211d6dcfb81a8af66b8684a42d629183670d4 Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Fri, 24 Jun 2016 03:59:33 +0200 Subject: ARM: OMAP3: hwmod data: Add sysc information for DSI Add missing sysconfig/sysstatus information to OMAP3 hwmod. The information has been checked against OMAP34xx and OMAP36xx TRM. Without this change DSI block is not reset during boot, which is required for working Nokia N950 display. Signed-off-by: Sebastian Reichel Cc: stable@vger.kernel.org Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index d72ee61..1cc4a6f 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -722,8 +722,20 @@ static struct omap_hwmod omap3xxx_dss_dispc_hwmod = { * display serial interface controller */ +static struct omap_hwmod_class_sysconfig omap3xxx_dsi_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x0010, + .syss_offs = 0x0014, + .sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY | + SYSC_HAS_ENAWAKEUP | SYSC_HAS_SIDLEMODE | + SYSC_HAS_SOFTRESET | SYSS_HAS_RESET_STATUS), + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART), + .sysc_fields = &omap_hwmod_sysc_type1, +}; + static struct omap_hwmod_class omap3xxx_dsi_hwmod_class = { .name = "dsi", + .sysc = &omap3xxx_dsi_sysc, }; static struct omap_hwmod_irq_info omap3xxx_dsi1_irqs[] = { -- cgit v0.10.2 From 60a5b875047e827d0f5a1a3166df714be2ef13df Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Tue, 12 Jul 2016 12:50:31 -0500 Subject: ARM: OMAP4+: hwmod: Add hwmod flag for HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET Nearly all modules on OMAP4 and newer platforms have clkctrl offsets that are non-zero except for the RTC on am335x. Because we rely on a clkctrl_offset of zero to indicate no clkctrl_offset being present, lets add a HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET flag to use to indicate hwmods that have a valid clkctrl_offset of 0. Signed-off-by: Dave Gerlach Acked-by: Tero Kristo Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h index 4041bad..7890401 100644 --- a/arch/arm/mach-omap2/omap_hwmod.h +++ b/arch/arm/mach-omap2/omap_hwmod.h @@ -443,8 +443,12 @@ struct omap_hwmod_omap2_prcm { * HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT: Some IP blocks don't have a PRCM * module-level context loss register associated with them; this * flag bit should be set in those cases + * HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET: Some IP blocks have a valid CLKCTRL + * offset of zero; this flag bit should be set in those cases to + * distinguish from hwmods that have no clkctrl offset. */ #define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0) +#define HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET (1 << 1) /** * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data -- cgit v0.10.2 From ddb0d99d53fea77c568d17265b8bca6e64f2975b Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Tue, 12 Jul 2016 12:50:32 -0500 Subject: ARM: OMAP2+: AM33XX: Add HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET flag to rtc hwmod The RTC hwmod on AM335x family of SoCs is unique in that the clkctrl_offs in the PRCM is 0. We rely on a clkctrl_offs of zero as indicating no clkctrl is present so we must flag this hwmod with HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET to indicate the 0 clkctrl_offs is in fact valid in this case. Signed-off-by: Dave Gerlach Acked-by: Tero Kristo Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c index 55c5878..e2d84aa 100644 --- a/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c @@ -29,6 +29,7 @@ #define CLKCTRL(oh, clkctrl) ((oh).prcm.omap4.clkctrl_offs = (clkctrl)) #define RSTCTRL(oh, rstctrl) ((oh).prcm.omap4.rstctrl_offs = (rstctrl)) #define RSTST(oh, rstst) ((oh).prcm.omap4.rstst_offs = (rstst)) +#define PRCM_FLAGS(oh, flag) ((oh).prcm.omap4.flags = (flag)) /* * 'l3' class @@ -1296,6 +1297,7 @@ static void omap_hwmod_am33xx_clkctrl(void) CLKCTRL(am33xx_i2c1_hwmod, AM33XX_CM_WKUP_I2C0_CLKCTRL_OFFSET); CLKCTRL(am33xx_wd_timer1_hwmod, AM33XX_CM_WKUP_WDT1_CLKCTRL_OFFSET); CLKCTRL(am33xx_rtc_hwmod, AM33XX_CM_RTC_RTC_CLKCTRL_OFFSET); + PRCM_FLAGS(am33xx_rtc_hwmod, HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET); CLKCTRL(am33xx_mmc2_hwmod, AM33XX_CM_PER_MMC2_CLKCTRL_OFFSET); CLKCTRL(am33xx_gpmc_hwmod, AM33XX_CM_PER_GPMC_CLKCTRL_OFFSET); CLKCTRL(am33xx_l4_ls_hwmod, AM33XX_CM_PER_L4LS_CLKCTRL_OFFSET); -- cgit v0.10.2 From 428929c79cc3de7f9fefd2184da6ed625676ad9e Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Tue, 12 Jul 2016 12:50:33 -0500 Subject: ARM: OMAP4+: Have _omap4_wait_target_* check for valid clkctrl_offs Previously the low-level CM call internal to the _omap4_wait_target_ready/disable calls was responsible for checking for a valid clkctrl_offs. Now we must also consider the value of the prcm.omap4.flags because if HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET is set in the flags then clkctrl_offs of 0 is valid. Let's add this check into the _omap4_wait_target_ready/disable where we have access to both the clkctrl_offs and the flags values and simply return 0 without calling the low level CM call at all, which would have returned 0 anyway if the clktrl_offs was zero. Signed-off-by: Dave Gerlach Acked-by: Tero Kristo Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 5b70938..1052b29 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1053,6 +1053,10 @@ static int _omap4_wait_target_disable(struct omap_hwmod *oh) if (oh->flags & HWMOD_NO_IDLEST) return 0; + if (!oh->prcm.omap4.clkctrl_offs && + !(oh->prcm.omap4.flags & HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET)) + return 0; + return omap_cm_wait_module_idle(oh->clkdm->prcm_partition, oh->clkdm->cm_inst, oh->prcm.omap4.clkctrl_offs, 0); @@ -2971,6 +2975,10 @@ static int _omap4_wait_target_ready(struct omap_hwmod *oh) if (!_find_mpu_rt_port(oh)) return 0; + if (!oh->prcm.omap4.clkctrl_offs && + !(oh->prcm.omap4.flags & HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET)) + return 0; + /* XXX check module SIDLEMODE, hardreset status */ return omap_cm_wait_module_ready(oh->clkdm->prcm_partition, -- cgit v0.10.2 From e4e53287701b2b8087fa107b4a965fa49505615f Mon Sep 17 00:00:00 2001 From: Dave Gerlach Date: Tue, 12 Jul 2016 12:50:34 -0500 Subject: ARM: OMAP4+: CM: Remove redundant checks for clkctrl_offs of zero Now that we have moved the check for valid clkctrl_offs to the caller of am33xx_cm_wait_module_ready/idle and omap4_cminst_wait_module_ready/idle let's remove the now redundant check for clkctrl_offs from these functions. Signed-off-by: Dave Gerlach Acked-by: Tero Kristo Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/cm33xx.c b/arch/arm/mach-omap2/cm33xx.c index c073fb5..6f2d0ae 100644 --- a/arch/arm/mach-omap2/cm33xx.c +++ b/arch/arm/mach-omap2/cm33xx.c @@ -220,9 +220,6 @@ static int am33xx_cm_wait_module_ready(u8 part, s16 inst, u16 clkctrl_offs, { int i = 0; - if (!clkctrl_offs) - return 0; - omap_test_timeout(_is_module_ready(inst, clkctrl_offs), MAX_MODULE_READY_TIME, i); @@ -246,9 +243,6 @@ static int am33xx_cm_wait_module_idle(u8 part, s16 inst, u16 clkctrl_offs, { int i = 0; - if (!clkctrl_offs) - return 0; - omap_test_timeout((_clkctrl_idlest(inst, clkctrl_offs) == CLKCTRL_IDLEST_DISABLED), MAX_MODULE_READY_TIME, i); diff --git a/arch/arm/mach-omap2/cminst44xx.c b/arch/arm/mach-omap2/cminst44xx.c index 2c0e07e..2ab27ad 100644 --- a/arch/arm/mach-omap2/cminst44xx.c +++ b/arch/arm/mach-omap2/cminst44xx.c @@ -278,9 +278,6 @@ static int omap4_cminst_wait_module_ready(u8 part, s16 inst, u16 clkctrl_offs, { int i = 0; - if (!clkctrl_offs) - return 0; - omap_test_timeout(_is_module_ready(part, inst, clkctrl_offs), MAX_MODULE_READY_TIME, i); @@ -304,9 +301,6 @@ static int omap4_cminst_wait_module_idle(u8 part, s16 inst, u16 clkctrl_offs, { int i = 0; - if (!clkctrl_offs) - return 0; - omap_test_timeout((_clkctrl_idlest(part, inst, clkctrl_offs) == CLKCTRL_IDLEST_DISABLED), MAX_MODULE_DISABLE_TIME, i); -- cgit v0.10.2 From 73efc3245fd3edb3632d82a3a9c5d5d975a02efc Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Wed, 27 Jul 2016 08:03:18 +0200 Subject: xfrm: get rid of incorrect WARN AFAICT this message is just printed whenever input validation fails. This is a normal failure and we shouldn't be dumping the stack over it. Looks like it was originally a printk that was maybe incorrectly upgraded to a WARN: commit 62db5cfd70b1ef53aa21f144a806fe3b78c84fab Author: stephen hemminger Date: Wed May 12 06:37:06 2010 +0000 xfrm: add severity to printk Cc: Stephen Hemminger Cc: Steffen Klassert Signed-off-by: Vegard Nossum Signed-off-by: Steffen Klassert diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 4fb04ce..1a4f142 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -2117,7 +2117,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh, err = verify_newpolicy_info(&ua->policy); if (err) - goto bad_policy; + goto free_state; /* build an XP */ xp = xfrm_policy_construct(net, &ua->policy, attrs, &err); @@ -2149,8 +2149,6 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh, return 0; -bad_policy: - WARN(1, "BAD policy passed\n"); free_state: kfree(x); nomem: -- cgit v0.10.2 From 7677c7560c3e80fde08a7e710d378dedabf950c3 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Wed, 27 Jul 2016 08:44:15 +0200 Subject: xfrm: get rid of another incorrect WARN During fuzzing I regularly run into this WARN(). According to Herbert Xu, this "certainly shouldn't be a WARN, it probably shouldn't print anything either". Cc: Stephen Hemminger Cc: Steffen Klassert Cc: Herbert Xu Signed-off-by: Vegard Nossum Signed-off-by: Steffen Klassert diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 1a4f142..cb65d91 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -2051,9 +2051,6 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh, if (up->hard) { xfrm_policy_delete(xp, p->dir); xfrm_audit_policy_delete(xp, 1, true); - } else { - // reset the timers here? - WARN(1, "Don't know what to do with soft policy expire\n"); } km_policy_expired(xp, p->dir, up->hard, nlh->nlmsg_pid); -- cgit v0.10.2 From 8053f21675b073b379cbca258ee4a3f3850dfa94 Mon Sep 17 00:00:00 2001 From: Nicolin Chen Date: Tue, 26 Jul 2016 14:55:51 -0700 Subject: ASoC: dapm: Add a dummy snd_pcm_runtime to avoid NULL pointer access The SND_SOC_DAPM_PRE_PMU case would call startup()/hw_params() that might access substream->runtime through other functions. For example: Unable to handle kernel NULL pointer dereference at virtual address [....] PC is at snd_pcm_hw_rule_add+0x24/0x1b0 LR is at snd_pcm_hw_constraint_list+0x20/0x28 [....] Process arecord (pid: 424, stack limit = 0xffffffc1ecaf0020) Call trace: [] snd_pcm_hw_rule_add+0x24/0x1b0 [] snd_pcm_hw_constraint_list+0x20/0x28 [] cs53l30_pcm_startup+0x24/0x30 [] snd_soc_dai_link_event+0x290/0x354 [] dapm_seq_check_event.isra.31+0x134/0x2c8 [] dapm_seq_run_coalesced+0x94/0x1c8 [] dapm_seq_run+0xa4/0x404 [] dapm_power_widgets+0x524/0x984 [] snd_soc_dapm_stream_event+0x8c/0xa8 [] soc_pcm_prepare+0x10c/0x1ec [] snd_pcm_do_prepare+0x1c/0x38 [] snd_pcm_action_single+0x40/0x88 [] snd_pcm_action_nonatomic+0x70/0x90 [] snd_pcm_common_ioctl1+0xb6c/0xdd8 [] snd_pcm_capture_ioctl1+0x200/0x334 [] snd_pcm_ioctl_compat+0x648/0x95c [] compat_SyS_ioctl+0xac/0xfc4 [] el0_svc_naked+0x24/0x28 ---[ end trace 0dc4f99c2759c35c ]--- So this patch adds a dummy runtime for the original dummy substream to merely avoid the NULL pointer access. Signed-off-by: Nicolin Chen Signed-off-by: Mark Brown diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 8698c26..d908ff8 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3493,6 +3493,7 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, const struct snd_soc_pcm_stream *config = w->params + w->params_select; struct snd_pcm_substream substream; struct snd_pcm_hw_params *params = NULL; + struct snd_pcm_runtime *runtime = NULL; u64 fmt; int ret; @@ -3541,6 +3542,14 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, memset(&substream, 0, sizeof(substream)); + /* Allocate a dummy snd_pcm_runtime for startup() and other ops() */ + runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); + if (!runtime) { + ret = -ENOMEM; + goto out; + } + substream.runtime = runtime; + switch (event) { case SND_SOC_DAPM_PRE_PMU: substream.stream = SNDRV_PCM_STREAM_CAPTURE; @@ -3606,6 +3615,7 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, } out: + kfree(runtime); kfree(params); return ret; } -- cgit v0.10.2 From 6678716751af24af09163aef54bbabb60c12e18b Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Jul 2016 14:53:53 +0000 Subject: spi: qup: Remove spi_master_put in spi_qup_remove() The call to spi_master_put() in spi_qup_remove() is redundant since the master is registered using devm_spi_register_master() and no reference hold by using spi_master_get() in spi_qup_remove(). This is detected by Coccinelle semantic patch. Signed-off-by: Wei Yongjun Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index c338ef1..7f15556 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -1030,7 +1030,6 @@ static int spi_qup_remove(struct platform_device *pdev) pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev); - spi_master_put(master); return 0; } -- cgit v0.10.2 From c2b08cede727387a5e19b40fa8e1a1e3a53e8527 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Jul 2016 14:56:50 +0000 Subject: spi: mediatek: remove spi_master_put in mtk_spi_remove() The call to spi_master_put() in mtk_spi_remove() is redundant since the master is registered using devm_spi_register_master() and no reference hold by using spi_master_get() in mtk_spi_remove(). This is detected by Coccinelle semantic patch. Signed-off-by: Wei Yongjun Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 0be89e0..899d7a8 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -685,7 +685,6 @@ static int mtk_spi_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); mtk_spi_reset(mdata); - spi_master_put(master); return 0; } -- cgit v0.10.2 From 2932c287108e2987454449b8214eae6db066da85 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Jul 2016 14:57:55 +0000 Subject: spi: img-spfi: Remove spi_master_put in img_spfi_remove() The call to spi_master_put() in img_spfi_remove() is redundant since the master is registered using devm_spi_register_master() and no reference hold by using spi_master_get() in img_spfi_remove(). This is detected by Coccinelle semantic patch. Signed-off-by: Wei Yongjun Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c index 823cbc9..7a37090 100644 --- a/drivers/spi/spi-img-spfi.c +++ b/drivers/spi/spi-img-spfi.c @@ -720,8 +720,6 @@ static int img_spfi_remove(struct platform_device *pdev) clk_disable_unprepare(spfi->sys_clk); } - spi_master_put(master); - return 0; } -- cgit v0.10.2 From 93ca33c99f22a0a096f83f19c9f887aeb67507a1 Mon Sep 17 00:00:00 2001 From: Hiroyuki Yokoyama Date: Mon, 25 Jul 2016 01:52:43 +0000 Subject: ASoC: rsnd: Fixup SRCm_IFSVR calculate method This patch fixes the calculation accuracy degradation of SRCm_IFSVR register value. Signed-off-by: Hiroyuki Yokoyama Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c index e39f916..969a516 100644 --- a/sound/soc/sh/rcar/src.c +++ b/sound/soc/sh/rcar/src.c @@ -226,8 +226,12 @@ static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io, ifscr = 0; fsrate = 0; if (fin != fout) { + u64 n; + ifscr = 1; - fsrate = 0x0400000 / fout * fin; + n = (u64)0x0400000 * fin; + do_div(n, fout); + fsrate = n; } /* -- cgit v0.10.2 From 6916fb3b10b3cbe3b1f9f5b680675f53e4e299eb Mon Sep 17 00:00:00 2001 From: Tobias Brunner Date: Fri, 29 Jul 2016 09:57:32 +0200 Subject: xfrm: Ignore socket policies when rebuilding hash tables Whenever thresholds are changed the hash tables are rebuilt. This is done by enumerating all policies and hashing and inserting them into the right table according to the thresholds and direction. Because socket policies are also contained in net->xfrm.policy_all but no hash tables are defined for their direction (dir + XFRM_POLICY_MAX) this causes a NULL or invalid pointer dereference after returning from policy_hash_bysel() if the rebuild is done while any socket policies are installed. Since the rebuild after changing thresholds is scheduled this crash could even occur if the userland sets thresholds seemingly before installing any socket policies. Fixes: 53c2e285f970 ("xfrm: Do not hash socket policies") Signed-off-by: Tobias Brunner Acked-by: Herbert Xu Signed-off-by: Steffen Klassert diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index b5e665b..45f9cf9 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -626,6 +626,10 @@ static void xfrm_hash_rebuild(struct work_struct *work) /* re-insert all policies by order of creation */ list_for_each_entry_reverse(policy, &net->xfrm.policy_all, walk.all) { + if (xfrm_policy_id2dir(policy->index) >= XFRM_POLICY_MAX) { + /* skip socket policies */ + continue; + } newpos = NULL; chain = policy_hash_bysel(net, &policy->selector, policy->family, -- cgit v0.10.2 From b2c7f5d9c939a37c1ce7f86a642de70e3033ee9e Mon Sep 17 00:00:00 2001 From: Maarten ter Huurne Date: Fri, 29 Jul 2016 23:42:12 +0200 Subject: regmap: cache: Fix num_reg_defaults computation from reg_defaults_raw In 3245d460 (regmap: cache: Fall back to register by register read for cache defaults) non-readable registers are skipped when initializing reg_defaults, but are still included in num_reg_defaults. So there can be uninitialized entries at the end of reg_defaults, which can cause problems when the register cache initializes from the full array. Fixed it by excluding non-readable registers from the count as well. Signed-off-by: Maarten ter Huurne Signed-off-by: Mark Brown diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index df7ff729..4e58256 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -38,10 +38,11 @@ static int regcache_hw_init(struct regmap *map) /* calculate the size of reg_defaults */ for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++) - if (!regmap_volatile(map, i * map->reg_stride)) + if (regmap_readable(map, i * map->reg_stride) && + !regmap_volatile(map, i * map->reg_stride)) count++; - /* all registers are volatile, so just bypass */ + /* all registers are unreadable or volatile, so just bypass */ if (!count) { map->cache_bypass = true; return 0; -- cgit v0.10.2 From 9b622e2bbcf049c82e2550d35fb54ac205965f50 Mon Sep 17 00:00:00 2001 From: Tomasz Majchrzak Date: Thu, 28 Jul 2016 10:28:25 +0200 Subject: raid10: increment write counter after bio is split md pending write counter must be incremented after bio is split, otherwise it gets decremented too many times in end bio callback and becomes negative. Signed-off-by: Tomasz Majchrzak Reviewed-by: Artur Paszkiewicz Signed-off-by: Shaohua Li diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index ed29fc8..1a632a8 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1064,6 +1064,8 @@ static void __make_request(struct mddev *mddev, struct bio *bio) int max_sectors; int sectors; + md_write_start(mddev, bio); + /* * Register the new request and wait if the reconstruction * thread has put up a bar for new requests. @@ -1445,8 +1447,6 @@ static void raid10_make_request(struct mddev *mddev, struct bio *bio) return; } - md_write_start(mddev, bio); - do { /* -- cgit v0.10.2 From 3980bd3b406addb327d858aebd19e229ea340b9a Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sun, 31 Jul 2016 23:38:36 -0400 Subject: ext4: reserve xattr index for the Hurd The Hurd is using inode fields which restricts it from using more advanced ext4 file system features, due to design choices made over a decade ago. By giving the Hurd an extended attribute index field we allow it to move the translator and author fields out of the core inode fields, and hopefully we can get rid of ugly hacks such as EXT4_OS_HURD and EXT4_MOUNT2_HURD_COMPAT somday. For more information please see: https://summerofcode.withgoogle.com/projects/#5869799859027968 Signed-off-by: Theodore Ts'o diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index 69dd3e6..a92e783 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -24,6 +24,7 @@ #define EXT4_XATTR_INDEX_SYSTEM 7 #define EXT4_XATTR_INDEX_RICHACL 8 #define EXT4_XATTR_INDEX_ENCRYPTION 9 +#define EXT4_XATTR_INDEX_HURD 10 /* Reserved for Hurd */ struct ext4_xattr_header { __le32 h_magic; /* magic number for identification */ -- cgit v0.10.2 From 829fa70dddadf9dd041d62b82cd7cea63943899d Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 1 Aug 2016 00:51:02 -0400 Subject: ext4: validate that metadata blocks do not overlap superblock A number of fuzzing failures seem to be caused by allocation bitmaps or other metadata blocks being pointed at the superblock. This can cause kernel BUG or WARNings once the superblock is overwritten, so validate the group descriptor blocks to make sure this doesn't happen. Cc: stable@vger.kernel.org Signed-off-by: Theodore Ts'o diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c13a4e4..da3146e 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2211,6 +2211,7 @@ void ext4_group_desc_csum_set(struct super_block *sb, __u32 block_group, /* Called at mount-time, super-block is locked */ static int ext4_check_descriptors(struct super_block *sb, + ext4_fsblk_t sb_block, ext4_group_t *first_not_zeroed) { struct ext4_sb_info *sbi = EXT4_SB(sb); @@ -2241,6 +2242,11 @@ static int ext4_check_descriptors(struct super_block *sb, grp = i; block_bitmap = ext4_block_bitmap(sb, gdp); + if (block_bitmap == sb_block) { + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " + "Block bitmap for group %u overlaps " + "superblock", i); + } if (block_bitmap < first_block || block_bitmap > last_block) { ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " "Block bitmap for group %u not in group " @@ -2248,6 +2254,11 @@ static int ext4_check_descriptors(struct super_block *sb, return 0; } inode_bitmap = ext4_inode_bitmap(sb, gdp); + if (inode_bitmap == sb_block) { + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " + "Inode bitmap for group %u overlaps " + "superblock", i); + } if (inode_bitmap < first_block || inode_bitmap > last_block) { ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " "Inode bitmap for group %u not in group " @@ -2255,6 +2266,11 @@ static int ext4_check_descriptors(struct super_block *sb, return 0; } inode_table = ext4_inode_table(sb, gdp); + if (inode_table == sb_block) { + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " + "Inode table for group %u overlaps " + "superblock", i); + } if (inode_table < first_block || inode_table + sbi->s_itb_per_group - 1 > last_block) { ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " @@ -3757,7 +3773,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount2; } } - if (!ext4_check_descriptors(sb, &first_not_zeroed)) { + if (!ext4_check_descriptors(sb, logical_sb_block, &first_not_zeroed)) { ext4_msg(sb, KERN_ERR, "group descriptors corrupted!"); ret = -EFSCORRUPTED; goto failed_mount2; -- cgit v0.10.2 From 2392f7fd695246df4fb5f0b5fb88ce37cdb01764 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Tue, 26 Jul 2016 18:06:39 +0530 Subject: ASoC: Intel: Skylake: Check list empty while getting module info Module list can be NULL so check if the list is empty before accessing the list. Signed-off-by: Senthilnathan Veppur Signed-off-by: Vinod Koul Signed-off-by: Mark Brown diff --git a/sound/soc/intel/skylake/skl-sst-utils.c b/sound/soc/intel/skylake/skl-sst-utils.c index 25fcb79..ddcb52a 100644 --- a/sound/soc/intel/skylake/skl-sst-utils.c +++ b/sound/soc/intel/skylake/skl-sst-utils.c @@ -123,6 +123,11 @@ int snd_skl_get_module_info(struct skl_sst *ctx, u8 *uuid, uuid_mod = (uuid_le *)uuid; + if (list_empty(&ctx->uuid_list)) { + dev_err(ctx->dev, "Module list is empty\n"); + return -EINVAL; + } + list_for_each_entry(module, &ctx->uuid_list, list) { if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) { dfw_config->module_id = module->id; -- cgit v0.10.2 From ff00d3b4e5e4395c825e8ec628f25932d812f31a Mon Sep 17 00:00:00 2001 From: ZhengYuan Liu Date: Thu, 28 Jul 2016 14:22:14 +0800 Subject: raid5: fix incorrectly counter of conf->empty_inactive_list_nr The counter conf->empty_inactive_list_nr is only used for determine if the raid5 is congested which is deal with in function raid5_congested(). It was increased in get_free_stripe() when conf->inactive_list got to be empty and decreased in release_inactive_stripe_list() when splice temp_inactive_list to conf->inactive_list. However, this may have a problem when raid5_get_active_stripe or stripe_add_to_batch_list was called, because these two functions may call list_del_init(&sh->lru) to delete sh from "conf->inactive_list + hash" which may cause "conf->inactive_list + hash" to be empty when atomic_inc_not_zero(&sh->count) got false. So a check should be done at these two point and increase empty_inactive_list_nr accordingly. Otherwise the counter may get to be negative number which would influence async readahead from VFS. Signed-off-by: ZhengYuan Liu Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index d189e89..e379b89 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -659,6 +659,7 @@ raid5_get_active_stripe(struct r5conf *conf, sector_t sector, { struct stripe_head *sh; int hash = stripe_hash_locks_hash(sector); + int inc_empty_inactive_list_flag; pr_debug("get_stripe, sector %llu\n", (unsigned long long)sector); @@ -703,7 +704,12 @@ raid5_get_active_stripe(struct r5conf *conf, sector_t sector, atomic_inc(&conf->active_stripes); BUG_ON(list_empty(&sh->lru) && !test_bit(STRIPE_EXPANDING, &sh->state)); + inc_empty_inactive_list_flag = 0; + if (!list_empty(conf->inactive_list + hash)) + inc_empty_inactive_list_flag = 1; list_del_init(&sh->lru); + if (list_empty(conf->inactive_list + hash) && inc_empty_inactive_list_flag) + atomic_inc(&conf->empty_inactive_list_nr); if (sh->group) { sh->group->stripes_cnt--; sh->group = NULL; @@ -762,6 +768,7 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh sector_t head_sector, tmp_sec; int hash; int dd_idx; + int inc_empty_inactive_list_flag; /* Don't cross chunks, so stripe pd_idx/qd_idx is the same */ tmp_sec = sh->sector; @@ -779,7 +786,12 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh atomic_inc(&conf->active_stripes); BUG_ON(list_empty(&head->lru) && !test_bit(STRIPE_EXPANDING, &head->state)); + inc_empty_inactive_list_flag = 0; + if (!list_empty(conf->inactive_list + hash)) + inc_empty_inactive_list_flag = 1; list_del_init(&head->lru); + if (list_empty(conf->inactive_list + hash) && inc_empty_inactive_list_flag) + atomic_inc(&conf->empty_inactive_list_nr); if (head->group) { head->group->stripes_cnt--; head->group = NULL; -- cgit v0.10.2 From 1f85e118c81d15aa9e002604dfb69c823d4aac16 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Wed, 3 Aug 2016 01:24:05 +0000 Subject: ASoC: simple-card-utils: add missing MODULE_xxx() simple-card-utils might be used as module, but MODULE_xxx() information was missed. This patch adds it. Otherwise, we will have below error, and can't use it. Specil thanks to Kevin. > insmod simple-card-utils.ko simple_card_utils: module license 'unspecified' taints kernel. Disabling lock debugging due to kernel taint simple_card_utils: Unknown symbol snd_soc_of_parse_daifmt (err 0) simple_card_utils: Unknown symbol snd_soc_of_parse_card_name (err 0) insmod: can't insert 'simple-card-utils.ko': \ unknown symbol in module, or unknown parameter Reported-by: Kevin Hilman Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown diff --git a/sound/soc/generic/Makefile b/sound/soc/generic/Makefile index 45602ca..2d53c8d 100644 --- a/sound/soc/generic/Makefile +++ b/sound/soc/generic/Makefile @@ -1,5 +1,5 @@ -obj-$(CONFIG_SND_SIMPLE_CARD_UTILS) := simple-card-utils.o - +snd-soc-simple-card-utils-objs := simple-card-utils.o snd-soc-simple-card-objs := simple-card.o -obj-$(CONFIG_SND_SIMPLE_CARD) += snd-soc-simple-card.o +obj-$(CONFIG_SND_SIMPLE_CARD_UTILS) += snd-soc-simple-card-utils.o +obj-$(CONFIG_SND_SIMPLE_CARD) += snd-soc-simple-card.o diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index d89a9a1..9599de6 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -7,6 +7,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include #include #include @@ -95,3 +96,8 @@ int asoc_simple_card_parse_card_name(struct snd_soc_card *card, return 0; } EXPORT_SYMBOL_GPL(asoc_simple_card_parse_card_name); + +/* Module information */ +MODULE_AUTHOR("Kuninori Morimoto "); +MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); +MODULE_LICENSE("GPL v2"); -- cgit v0.10.2 From 1bc610e7a17dcf5165f1ed4e0201ee080ba1a0df Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Thu, 4 Aug 2016 11:51:25 +0200 Subject: ASoC: samsung: Fix clock handling in S3C24XX_UDA134X card There is no "pclk" alias in the s3c2440 clk driver for "soc-audio" device so related clk_get() fails, which prevents any operation of the S3C24XX_UDA134X sound card. Instead we get the clock on behalf of the I2S device, i.e. we use the I2S block gate clock which has PCLK is its parent clock. Without this patch there is an error like: s3c24xx_uda134x_startup cannot get pclk ASoC: UDA134X startup failed: -2 Signed-off-by: Sylwester Nawrocki Signed-off-by: Mark Brown diff --git a/sound/soc/samsung/s3c24xx_uda134x.c b/sound/soc/samsung/s3c24xx_uda134x.c index 50849e1..92e88bc 100644 --- a/sound/soc/samsung/s3c24xx_uda134x.c +++ b/sound/soc/samsung/s3c24xx_uda134x.c @@ -58,10 +58,12 @@ static struct platform_device *s3c24xx_uda134x_snd_device; static int s3c24xx_uda134x_startup(struct snd_pcm_substream *substream) { - int ret = 0; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; #ifdef ENFORCE_RATES struct snd_pcm_runtime *runtime = substream->runtime; #endif + int ret = 0; mutex_lock(&clk_lock); pr_debug("%s %d\n", __func__, clk_users); @@ -71,8 +73,7 @@ static int s3c24xx_uda134x_startup(struct snd_pcm_substream *substream) printk(KERN_ERR "%s cannot get xtal\n", __func__); ret = PTR_ERR(xtal); } else { - pclk = clk_get(&s3c24xx_uda134x_snd_device->dev, - "pclk"); + pclk = clk_get(cpu_dai->dev, "iis"); if (IS_ERR(pclk)) { printk(KERN_ERR "%s cannot get pclk\n", __func__); -- cgit v0.10.2 From 1bc8da4e143c0fd8807e061a66d91d5972601ab1 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 4 Aug 2016 17:22:16 +0200 Subject: regmap: rbtree: Avoid overlapping nodes When searching for a suitable node that should be used for inserting a new register, which does not fall within the range of any existing node, we not only looks for nodes which are directly adjacent to the new register, but for nodes within a certain proximity. This is done to avoid creating lots of small nodes with just a few registers spacing in between, which would increase memory usage as well as tree traversal time. This means there might be multiple node candidates which fall within the proximity range of the new register. If we choose the first node we encounter, under certain register insertion patterns it is possible to end up with overlapping ranges. This will break order in the rbtree and can cause the cached register value to become corrupted. E.g. take the simplified example where the proximity range is 2 and the register insertion sequence is 1, 4, 2, 3, 5. * Insert of register 1 creates a new node, this is the root of the rbtree * Insert of register 4 creates a new node, which is inserted to the right of the root. * Insert of register 2 gets inserted to the first node * Insert of register 3 gets inserted to the first node * Insert of register 5 also gets inserted into the first node since this is the first node encountered and it is within the proximity range. Now there are two overlapping nodes. To avoid this always choose the node that is closest to the new register. This will ensure that nodes will not overlap. The tree traversal is still done as a binary search, we just don't stop at the first node found. So the complexity of the algorithm stays within the same order. Ideally if a new register is in the range of two adjacent blocks those blocks should be merged, but that is a much more invasive change and left for later. The issue was initially introduced in commit 472fdec7380c ("regmap: rbtree: Reduce number of nodes, take 2"), but became much more exposed by commit 6399aea629b0 ("regmap: rbtree: When adding a reg do a bsearch for target node") which changed the order in which nodes are looked-up. Fixes: 6399aea629b0 ("regmap: rbtree: When adding a reg do a bsearch for target node") Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index aa56af8..b11af3f 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -404,6 +404,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg, unsigned int new_base_reg, new_top_reg; unsigned int min, max; unsigned int max_dist; + unsigned int dist, best_dist = UINT_MAX; max_dist = map->reg_stride * sizeof(*rbnode_tmp) / map->cache_word_size; @@ -423,24 +424,41 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg, &base_reg, &top_reg); if (base_reg <= max && top_reg >= min) { - new_base_reg = min(reg, base_reg); - new_top_reg = max(reg, top_reg); - } else { - if (max < base_reg) - node = node->rb_left; + if (reg < base_reg) + dist = base_reg - reg; + else if (reg > top_reg) + dist = reg - top_reg; else - node = node->rb_right; - - continue; + dist = 0; + if (dist < best_dist) { + rbnode = rbnode_tmp; + best_dist = dist; + new_base_reg = min(reg, base_reg); + new_top_reg = max(reg, top_reg); + } } - ret = regcache_rbtree_insert_to_block(map, rbnode_tmp, + /* + * Keep looking, we want to choose the closest block, + * otherwise we might end up creating overlapping + * blocks, which breaks the rbtree. + */ + if (reg < base_reg) + node = node->rb_left; + else if (reg > top_reg) + node = node->rb_right; + else + break; + } + + if (rbnode) { + ret = regcache_rbtree_insert_to_block(map, rbnode, new_base_reg, new_top_reg, reg, value); if (ret) return ret; - rbtree_ctx->cached_rbnode = rbnode_tmp; + rbtree_ctx->cached_rbnode = rbnode; return 0; } -- cgit v0.10.2 From ca6ac305f017472a172e53345264abdb495eba46 Mon Sep 17 00:00:00 2001 From: John Hsu Date: Thu, 4 Aug 2016 16:52:06 +0800 Subject: ASoC: nau8825: fix bug in playback when suspend In chromium, the following steps will make codec function fail. \1. plug in headphones, Play music \2. run "powerd_dbus_suspend" \3. resume from S3 After resume, the jack detection will restart and make configuration for the headset. Meanwhile, the playback prepares and starts to work. The two sequences will conflict and make wrong register configuration. Originally, the driver adds protection for the case when it finds the playback is active. But the "powerd_dbus_suspend" command will close the pcm stream before suspend. Therefore, the driver can't detect the playback after resume, and the protection not works. For the issue, the driver raises protection every time after resume. The protection will release after jack detection and configuration completes, and then the playback just will goes on. Signed-off-by: John Hsu Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 5c9707a..20d2f15 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -212,31 +212,6 @@ static const unsigned short logtable[256] = { 0xfa2f, 0xfaea, 0xfba5, 0xfc60, 0xfd1a, 0xfdd4, 0xfe8e, 0xff47 }; -static struct snd_soc_dai *nau8825_get_codec_dai(struct nau8825 *nau8825) -{ - struct snd_soc_codec *codec = snd_soc_dapm_to_codec(nau8825->dapm); - struct snd_soc_component *component = &codec->component; - struct snd_soc_dai *codec_dai, *_dai; - - list_for_each_entry_safe(codec_dai, _dai, &component->dai_list, list) { - if (!strncmp(codec_dai->name, NUVOTON_CODEC_DAI, - strlen(NUVOTON_CODEC_DAI))) - return codec_dai; - } - return NULL; -} - -static bool nau8825_dai_is_active(struct nau8825 *nau8825) -{ - struct snd_soc_dai *codec_dai = nau8825_get_codec_dai(nau8825); - - if (codec_dai) { - if (codec_dai->playback_active || codec_dai->capture_active) - return true; - } - return false; -} - /** * nau8825_sema_acquire - acquire the semaphore of nau88l25 * @nau8825: component to register the codec private data with @@ -1205,6 +1180,8 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream, struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); unsigned int val_len = 0; + nau8825_sema_acquire(nau8825, 2 * HZ); + switch (params_width(params)) { case 16: val_len |= NAU8825_I2S_DL_16; @@ -1225,6 +1202,9 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream, regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, NAU8825_I2S_DL_MASK, val_len); + /* Release the semaphone. */ + nau8825_sema_release(nau8825); + return 0; } @@ -1234,6 +1214,8 @@ static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); unsigned int ctrl1_val = 0, ctrl2_val = 0; + nau8825_sema_acquire(nau8825, 2 * HZ); + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: ctrl2_val |= NAU8825_I2S_MS_MASTER; @@ -1282,6 +1264,9 @@ static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, NAU8825_I2S_MS_MASK, ctrl2_val); + /* Release the semaphone. */ + nau8825_sema_release(nau8825); + return 0; } @@ -2241,20 +2226,8 @@ static int __maybe_unused nau8825_resume(struct snd_soc_codec *codec) regcache_cache_only(nau8825->regmap, false); regcache_sync(nau8825->regmap); - if (nau8825_is_jack_inserted(nau8825->regmap)) { - /* If the jack is inserted, we need to check whether the play- - * back is active before suspend. If active, the driver has to - * raise the protection for cross talk function to avoid the - * playback recovers before cross talk process finish. Other- - * wise, the playback will be interfered by cross talk func- - * tion. It is better to apply hardware related parameters - * before starting playback or record. - */ - if (nau8825_dai_is_active(nau8825)) { - nau8825->xtalk_protect = true; - nau8825_sema_acquire(nau8825, 0); - } - } + nau8825->xtalk_protect = true; + nau8825_sema_acquire(nau8825, 0); enable_irq(nau8825->irq); return 0; -- cgit v0.10.2 From 06746c672cdd60715ee57ab1aced95a9e536fd4d Mon Sep 17 00:00:00 2001 From: John Hsu Date: Thu, 4 Aug 2016 16:52:07 +0800 Subject: ASoC: nau8825: fix static check error about semaphone control The patch is to fix the static check error as the following. The patch commit b50455fab459 ("ASoC: nau8825: cross talk suppression measurement function") from Jun 7, 2016, leads to the following static checker warning: sound/soc/codecs/nau8825.c:265 nau8825_sema_acquire() warn: 'sem:&nau8825->xtalk_sem' is sometimes locked here and sometimes unlocked. The semaphone acquire function has return value, and some callers can do error handling when lock fails. Signed-off-by: John Hsu Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 20d2f15..2e59a85 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -225,19 +225,26 @@ static const unsigned short logtable[256] = { * Acquires the semaphore without jiffies. If no more tasks are allowed * to acquire the semaphore, calling this function will put the task to * sleep until the semaphore is released. - * It returns if the semaphore was acquired. + * If the semaphore is not released within the specified number of jiffies, + * this function returns -ETIME. + * If the sleep is interrupted by a signal, this function will return -EINTR. + * It returns 0 if the semaphore was acquired successfully. */ -static void nau8825_sema_acquire(struct nau8825 *nau8825, long timeout) +static int nau8825_sema_acquire(struct nau8825 *nau8825, long timeout) { int ret; - if (timeout) + if (timeout) { ret = down_timeout(&nau8825->xtalk_sem, timeout); - else + if (ret < 0) + dev_warn(nau8825->dev, "Acquire semaphone timeout\n"); + } else { ret = down_interruptible(&nau8825->xtalk_sem); + if (ret < 0) + dev_warn(nau8825->dev, "Acquire semaphone fail\n"); + } - if (ret < 0) - dev_warn(nau8825->dev, "Acquire semaphone fail\n"); + return ret; } /** @@ -1596,8 +1603,11 @@ static irqreturn_t nau8825_interrupt(int irq, void *data) * cess and restore changes if process * is ongoing when ejection. */ + int ret; nau8825->xtalk_protect = true; - nau8825_sema_acquire(nau8825, 0); + ret = nau8825_sema_acquire(nau8825, 0); + if (ret < 0) + nau8825->xtalk_protect = false; } /* Startup cross talk detection process */ nau8825->xtalk_state = NAU8825_XTALK_PREPARE; @@ -2223,11 +2233,14 @@ static int __maybe_unused nau8825_suspend(struct snd_soc_codec *codec) static int __maybe_unused nau8825_resume(struct snd_soc_codec *codec) { struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); + int ret; regcache_cache_only(nau8825->regmap, false); regcache_sync(nau8825->regmap); nau8825->xtalk_protect = true; - nau8825_sema_acquire(nau8825, 0); + ret = nau8825_sema_acquire(nau8825, 0); + if (ret < 0) + nau8825->xtalk_protect = false; enable_irq(nau8825->irq); return 0; -- cgit v0.10.2 From 5d764912a0ee6db83e962c1501b5b9e58ba14e15 Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Thu, 4 Aug 2016 15:35:37 +0100 Subject: ASoC: da7213: Default to 64 BCLKs per WCLK to support all formats Previously code defaulted to 32 BCLKS per WCLK which meant 24 and 32 bit DAI formats would not work properly. This patch fixes the issue by defaulting to 64 BCLKs per WCLK. Signed-off-by: Adam Thomson Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index e5527bc..bcf1834 100644 --- a/sound/soc/codecs/da7213.c +++ b/sound/soc/codecs/da7213.c @@ -1247,8 +1247,8 @@ static int da7213_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) return -EINVAL; } - /* By default only 32 BCLK per WCLK is supported */ - dai_clk_mode |= DA7213_DAI_BCLKS_PER_WCLK_32; + /* By default only 64 BCLK per WCLK is supported */ + dai_clk_mode |= DA7213_DAI_BCLKS_PER_WCLK_64; snd_soc_write(codec, DA7213_DAI_CLK_MODE, dai_clk_mode); snd_soc_update_bits(codec, DA7213_DAI_CTRL, DA7213_DAI_FORMAT_MASK, -- cgit v0.10.2 From c3ccf357c3d75bd2924e049b6a991f7c0c111068 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 5 Aug 2016 10:17:52 +0200 Subject: spi: sh-msiof: Avoid invalid clock generator parameters The conversion from a look-up table to a calculation for clock generator parameters forgot to take into account that BRDV x 1/1 is valid only if BRPS is x 1/1 or x 1/2, leading to undefined behavior (e.g. arbitrary clock rates). This limitation is documented for the MSIOF module in all supported SH/R-Mobile and R-Car Gen2/Gen3 ARM SoCs. Tested on r8a7791/koelsch and r8a7795/salvator-x. Fixes: 65d5665bb260b034 ("spi: sh-msiof: Update calculation of frequency dividing") Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 0f83ad1..1de3a77 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -262,6 +262,9 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p, for (k = 0; k < ARRAY_SIZE(sh_msiof_spi_div_table); k++) { brps = DIV_ROUND_UP(div, sh_msiof_spi_div_table[k].div); + /* SCR_BRDV_DIV_1 is valid only if BRPS is x 1/1 or x 1/2 */ + if (sh_msiof_spi_div_table[k].div == 1 && brps > 2) + continue; if (brps <= 32) /* max of brdv is 32 */ break; } -- cgit v0.10.2 From 290284776bb281759b11faa287b8abccaf74bfcb Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Mon, 11 Jul 2016 14:50:07 -0700 Subject: regulator: qcom_smd: Fix voltage ranges for pm8x41 The voltage ranges listed here are wrong. The correct ranges can be seen in the "native" spmi regulator driver qcom_spmi-regulator.c at pldo_ranges[], ftsmps_ranges[] and boost_ranges[] for the pldo, ftsmps, and boost type regulators. Port these ranges over to the RPM SMD regulator driver so that we list the appropriate set of supported voltages on pldos. Doing this allows us to specify a voltage like 3075000 for l24, whereas before that wasn't a supported voltage. Fixes: da65e367b67e ("regulator: Regulator driver for the Qualcomm RPM") Signed-off-by: Stephen Boyd Reviewed-by: Andy Gross Signed-off-by: Mark Brown diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c index 5022fa8..47cd28e 100644 --- a/drivers/regulator/qcom_smd-regulator.c +++ b/drivers/regulator/qcom_smd-regulator.c @@ -221,29 +221,30 @@ static const struct regulator_desc pm8x41_hfsmps = { static const struct regulator_desc pm8841_ftsmps = { .linear_ranges = (struct regulator_linear_range[]) { REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000), - REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000), + REGULATOR_LINEAR_RANGE(1280000, 185, 261, 10000), }, .n_linear_ranges = 2, - .n_voltages = 340, + .n_voltages = 262, .ops = &rpm_smps_ldo_ops, }; static const struct regulator_desc pm8941_boost = { .linear_ranges = (struct regulator_linear_range[]) { - REGULATOR_LINEAR_RANGE(4000000, 0, 15, 100000), + REGULATOR_LINEAR_RANGE(4000000, 0, 30, 50000), }, .n_linear_ranges = 1, - .n_voltages = 16, + .n_voltages = 31, .ops = &rpm_smps_ldo_ops, }; static const struct regulator_desc pm8941_pldo = { .linear_ranges = (struct regulator_linear_range[]) { - REGULATOR_LINEAR_RANGE( 750000, 0, 30, 25000), - REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000), + REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500), + REGULATOR_LINEAR_RANGE(1550000, 64, 126, 25000), + REGULATOR_LINEAR_RANGE(3100000, 127, 163, 50000), }, - .n_linear_ranges = 2, - .n_voltages = 100, + .n_linear_ranges = 3, + .n_voltages = 164, .ops = &rpm_smps_ldo_ops, }; -- cgit v0.10.2 From c488f0071eacd10a290df4fb34bbdeb4eb8e7888 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Mon, 11 Jul 2016 14:50:08 -0700 Subject: regulator: qcom_smd: Fix voltage ranges for pma8084 ftsmps and pldo The voltage ranges listed here are wrong. The pma8084 pldo supports three different overlapping voltage ranges with differing step sizes and the pma8084 ftsmps supports two. These ranges can be seen in the "native" spmi regulator driver (qcom_spmi-regulator.c) at pldo_ranges[] and ftsmps_ranges[] respectively. Port these ranges over to the RPM SMD regulator driver so that we list the appropriate set of supported voltages on these types of regulators. Fixes: ee01d0c91ef1 ("regulator: qcom-smd: Add support for PMA8084") Signed-off-by: Stephen Boyd Reviewed-by: Andy Gross Signed-off-by: Mark Brown diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c index 47cd28e..8ed46a9 100644 --- a/drivers/regulator/qcom_smd-regulator.c +++ b/drivers/regulator/qcom_smd-regulator.c @@ -178,20 +178,21 @@ static const struct regulator_desc pma8084_hfsmps = { static const struct regulator_desc pma8084_ftsmps = { .linear_ranges = (struct regulator_linear_range[]) { REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000), - REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000), + REGULATOR_LINEAR_RANGE(1280000, 185, 261, 10000), }, .n_linear_ranges = 2, - .n_voltages = 340, + .n_voltages = 262, .ops = &rpm_smps_ldo_ops, }; static const struct regulator_desc pma8084_pldo = { .linear_ranges = (struct regulator_linear_range[]) { - REGULATOR_LINEAR_RANGE(750000, 0, 30, 25000), - REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000), + REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500), + REGULATOR_LINEAR_RANGE(1550000, 64, 126, 25000), + REGULATOR_LINEAR_RANGE(3100000, 127, 163, 50000), }, - .n_linear_ranges = 2, - .n_voltages = 100, + .n_linear_ranges = 3, + .n_voltages = 164, .ops = &rpm_smps_ldo_ops, }; -- cgit v0.10.2 From d9dd26b20cff88b45d861ec786d86b1c9bd2ee60 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Sat, 30 Jul 2016 10:05:31 -0700 Subject: MD: hold mddev lock to change bitmap location Changing the location changes a lot of things. Holding the lock to avoid race. This makes the .quiesce called with mddev lock hold too. Acked-by: NeilBrown Signed-off-by: Shaohua Li diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 6fff794..13041ee 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -2183,19 +2183,29 @@ location_show(struct mddev *mddev, char *page) static ssize_t location_store(struct mddev *mddev, const char *buf, size_t len) { + int rv; + rv = mddev_lock(mddev); + if (rv) + return rv; if (mddev->pers) { - if (!mddev->pers->quiesce) - return -EBUSY; - if (mddev->recovery || mddev->sync_thread) - return -EBUSY; + if (!mddev->pers->quiesce) { + rv = -EBUSY; + goto out; + } + if (mddev->recovery || mddev->sync_thread) { + rv = -EBUSY; + goto out; + } } if (mddev->bitmap || mddev->bitmap_info.file || mddev->bitmap_info.offset) { /* bitmap already configured. Only option is to clear it */ - if (strncmp(buf, "none", 4) != 0) - return -EBUSY; + if (strncmp(buf, "none", 4) != 0) { + rv = -EBUSY; + goto out; + } if (mddev->pers) { mddev->pers->quiesce(mddev, 1); bitmap_destroy(mddev); @@ -2214,21 +2224,25 @@ location_store(struct mddev *mddev, const char *buf, size_t len) /* nothing to be done */; else if (strncmp(buf, "file:", 5) == 0) { /* Not supported yet */ - return -EINVAL; + rv = -EINVAL; + goto out; } else { - int rv; if (buf[0] == '+') rv = kstrtoll(buf+1, 10, &offset); else rv = kstrtoll(buf, 10, &offset); if (rv) - return rv; - if (offset == 0) - return -EINVAL; + goto out; + if (offset == 0) { + rv = -EINVAL; + goto out; + } if (mddev->bitmap_info.external == 0 && mddev->major_version == 0 && - offset != mddev->bitmap_info.default_offset) - return -EINVAL; + offset != mddev->bitmap_info.default_offset) { + rv = -EINVAL; + goto out; + } mddev->bitmap_info.offset = offset; if (mddev->pers) { struct bitmap *bitmap; @@ -2245,7 +2259,7 @@ location_store(struct mddev *mddev, const char *buf, size_t len) mddev->pers->quiesce(mddev, 0); if (rv) { bitmap_destroy(mddev); - return rv; + goto out; } } } @@ -2257,6 +2271,11 @@ location_store(struct mddev *mddev, const char *buf, size_t len) set_bit(MD_CHANGE_DEVS, &mddev->flags); md_wakeup_thread(mddev->thread); } + rv = 0; +out: + mddev_unlock(mddev); + if (rv) + return rv; return len; } -- cgit v0.10.2 From 11367799f3d12a5074c4a3c0fa4ea8da2a21a2a4 Mon Sep 17 00:00:00 2001 From: Alexey Obitotskiy Date: Wed, 3 Aug 2016 10:02:56 +0200 Subject: md: Prevent IO hold during accessing to faulty raid5 array After array enters in faulty state (e.g. number of failed drives becomes more then accepted for raid5 level) it sets error flags (one of this flags is MD_CHANGE_PENDING). For internal metadata arrays MD_CHANGE_PENDING cleared into md_update_sb, but not for external metadata arrays. MD_CHANGE_PENDING flag set prevents to finish all new or non-finished IOs to array and hold them in pending state. In some cases this can leads to deadlock situation. For example, we have faulty array (2 of 4 drives failed) and udev handle array state changes and blkid started (or other userspace application that used array to read/write) but unable to finish reads due to IO hold. At the same time we unable to get exclusive access to array (to stop array in our case) because another external application still use this array. Fix makes possible to return IO with errors immediately. So external application can finish working with array and give exclusive access to other applications to perform required management actions with array. Signed-off-by: Alexey Obitotskiy Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index e379b89..4f8f524 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4640,7 +4640,9 @@ finish: } if (!bio_list_empty(&s.return_bi)) { - if (test_bit(MD_CHANGE_PENDING, &conf->mddev->flags)) { + if (test_bit(MD_CHANGE_PENDING, &conf->mddev->flags) && + (s.failed <= conf->max_degraded || + conf->mddev->external == 0)) { spin_lock_irq(&conf->device_lock); bio_list_merge(&conf->return_bi, &s.return_bi); spin_unlock_irq(&conf->device_lock); -- cgit v0.10.2 From 4d0bd46a4d55383f7b925e6cf7865a77e0f0e020 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 8 Aug 2016 08:45:33 +0200 Subject: Revert "wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel" This reverts commit 3d5fdff46c4b2b9534fa2f9fc78e90a48e0ff724. Ben Hutchings pointed out that the commit isn't safe since it assumes that the structure used by the driver is iw_point, when in fact there's no way to know about that. Fortunately, the only driver in the tree that ever runs this code path is the wilc1000 staging driver, so it doesn't really matter. Clearly I should have investigated this better before applying, sorry. Reported-by: Ben Hutchings Cc: stable@vger.kernel.org [though I guess it doesn't matter much] Fixes: 3d5fdff46c4b ("wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel") Signed-off-by: Johannes Berg diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c index dbb2738e..6250b1c 100644 --- a/net/wireless/wext-core.c +++ b/net/wireless/wext-core.c @@ -958,29 +958,8 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, return private(dev, iwr, cmd, info, handler); } /* Old driver API : call driver ioctl handler */ - if (dev->netdev_ops->ndo_do_ioctl) { -#ifdef CONFIG_COMPAT - if (info->flags & IW_REQUEST_FLAG_COMPAT) { - int ret = 0; - struct iwreq iwr_lcl; - struct compat_iw_point *iwp_compat = (void *) &iwr->u.data; - - memcpy(&iwr_lcl, iwr, sizeof(struct iwreq)); - iwr_lcl.u.data.pointer = compat_ptr(iwp_compat->pointer); - iwr_lcl.u.data.length = iwp_compat->length; - iwr_lcl.u.data.flags = iwp_compat->flags; - - ret = dev->netdev_ops->ndo_do_ioctl(dev, (void *) &iwr_lcl, cmd); - - iwp_compat->pointer = ptr_to_compat(iwr_lcl.u.data.pointer); - iwp_compat->length = iwr_lcl.u.data.length; - iwp_compat->flags = iwr_lcl.u.data.flags; - - return ret; - } else -#endif - return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd); - } + if (dev->netdev_ops->ndo_do_ioctl) + return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd); return -EOPNOTSUPP; } -- cgit v0.10.2 From 925baf394bb0e65d85330afe467393f66f910353 Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Wed, 27 Jul 2016 08:41:49 +0300 Subject: tools/gpio: fix gpio-event-mon header comment Fixes: 97f69747d8b1 ('tools/gpio: add the gpio-event-mon tool') Signed-off-by: Baruch Siach Signed-off-by: Linus Walleij diff --git a/tools/gpio/gpio-event-mon.c b/tools/gpio/gpio-event-mon.c index 448ed96..1c14c25 100644 --- a/tools/gpio/gpio-event-mon.c +++ b/tools/gpio/gpio-event-mon.c @@ -1,5 +1,5 @@ /* - * gpio-hammer - example swiss army knife to shake GPIO lines on a system + * gpio-event-mon - monitor GPIO line events from userspace * * Copyright (C) 2016 Linus Walleij * -- cgit v0.10.2 From 626d2f07de89bf6be3d7301524d0ab3375b81b9c Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 4 Aug 2016 19:59:41 +0900 Subject: dmaengine: usb-dmac: check CHCR.DE bit in usb_dmac_isr_channel() The USB-DMAC's interruption happens even if the CHCR.DE is not set to 1 because CHCR.NULLE is set to 1. So, this driver should call usb_dmac_isr_transfer_end() if the DE bit is set to 1 only. Otherwise, the desc is possible to be NULL in the usb_dmac_isr_transfer_end(). Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver) Cc: # v4.1+ Signed-off-by: Yoshihiro Shimoda Signed-off-by: Vinod Koul diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index 749f1bd..06ecdc3 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -600,27 +600,30 @@ static irqreturn_t usb_dmac_isr_channel(int irq, void *dev) { struct usb_dmac_chan *chan = dev; irqreturn_t ret = IRQ_NONE; - u32 mask = USB_DMACHCR_TE; - u32 check_bits = USB_DMACHCR_TE | USB_DMACHCR_SP; + u32 mask = 0; u32 chcr; + bool xfer_end = false; spin_lock(&chan->vc.lock); chcr = usb_dmac_chan_read(chan, USB_DMACHCR); - if (chcr & check_bits) - mask |= USB_DMACHCR_DE | check_bits; + if (chcr & (USB_DMACHCR_TE | USB_DMACHCR_SP)) { + mask |= USB_DMACHCR_DE | USB_DMACHCR_TE | USB_DMACHCR_SP; + if (chcr & USB_DMACHCR_DE) + xfer_end = true; + ret |= IRQ_HANDLED; + } if (chcr & USB_DMACHCR_NULL) { /* An interruption of TE will happen after we set FTE */ mask |= USB_DMACHCR_NULL; chcr |= USB_DMACHCR_FTE; ret |= IRQ_HANDLED; } - usb_dmac_chan_write(chan, USB_DMACHCR, chcr & ~mask); + if (mask) + usb_dmac_chan_write(chan, USB_DMACHCR, chcr & ~mask); - if (chcr & check_bits) { + if (xfer_end) usb_dmac_isr_transfer_end(chan); - ret |= IRQ_HANDLED; - } spin_unlock(&chan->vc.lock); -- cgit v0.10.2 From 23540d6e2f3193b946c4de43e3f9654fa6d23fe7 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 24 Jul 2016 14:10:58 +0200 Subject: memory: omap-gpmc: allow probe of child nodes to fail A recent commit (inadvertently?) changed how failed probe of a gpmc child node was handled. Instead of proceeding with setting up any other children as before, a single error now aborts the whole process. This change broke networking on some Overo boards due to probe failing for an unrelated nand node. This second issue should obviously be fixed, but let's restore the old behaviour of allowing child-node probe to fail to avoid further similar breakage on other systems. Fixes: d2d00862dfbb ("memory: omap-gpmc: Support general purpose input for WAITPINs") Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Johan Hovold Signed-off-by: Roger Quadros diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index 869c83f..f00f3e7 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -2185,7 +2185,7 @@ static int gpmc_probe_dt(struct platform_device *pdev) return 0; } -static int gpmc_probe_dt_children(struct platform_device *pdev) +static void gpmc_probe_dt_children(struct platform_device *pdev) { int ret; struct device_node *child; @@ -2200,11 +2200,11 @@ static int gpmc_probe_dt_children(struct platform_device *pdev) else ret = gpmc_probe_generic_child(pdev, child); - if (ret) - return ret; + if (ret) { + dev_err(&pdev->dev, "failed to probe DT child '%s': %d\n", + child->name, ret); + } } - - return 0; } #else static int gpmc_probe_dt(struct platform_device *pdev) @@ -2212,9 +2212,8 @@ static int gpmc_probe_dt(struct platform_device *pdev) return 0; } -static int gpmc_probe_dt_children(struct platform_device *pdev) +static void gpmc_probe_dt_children(struct platform_device *pdev) { - return 0; } #endif /* CONFIG_OF */ @@ -2369,16 +2368,10 @@ static int gpmc_probe(struct platform_device *pdev) goto setup_irq_failed; } - rc = gpmc_probe_dt_children(pdev); - if (rc < 0) { - dev_err(gpmc->dev, "failed to probe DT children\n"); - goto dt_children_failed; - } + gpmc_probe_dt_children(pdev); return 0; -dt_children_failed: - gpmc_free_irq(gpmc); setup_irq_failed: gpmc_gpio_exit(gpmc); gpio_init_failed: -- cgit v0.10.2 From d9fd3c918114cfd3995947339549c7341181efb0 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 8 Jul 2016 14:58:39 +0100 Subject: ARM: dts: armada-388-clearfog: number LAN ports properly Currently, the ports as seen from the rear number as: eth0 sfp lan5 lan4 lan3 lan2 lan1 lan6 which is illogical - this came about because the rev 2.0 boards have the LEDs on the front for the DSA switch (lan5-1) reversed. Rev 2.1 boards fixed the LED issue, and the Clearfog case numbers the lan ports increasing from left to right. Maintaining this illogical numbering causes confusion, with reports that "my link isn't coming up" and "my connection negotiates 10base-Half" both of which are due to people thinking that the port next to the SFP is lan1. Fix this by renumbering the ports to match people's expectations. [gregory.clement@free-electrons.com: added the Fixes and stable tags] Fixes: 4c945e8556ec ("ARM: dts: Add SolidRun Armada 388 Clearfog A1 DT file") Cc: Signed-off-by: Russell King Reviewed-by: Andrew Lunn Signed-off-by: Gregory CLEMENT diff --git a/arch/arm/boot/dts/armada-388-clearfog.dts b/arch/arm/boot/dts/armada-388-clearfog.dts index 2e0556a..d3e6bd8 100644 --- a/arch/arm/boot/dts/armada-388-clearfog.dts +++ b/arch/arm/boot/dts/armada-388-clearfog.dts @@ -390,12 +390,12 @@ port@0 { reg = <0>; - label = "lan1"; + label = "lan5"; }; port@1 { reg = <1>; - label = "lan2"; + label = "lan4"; }; port@2 { @@ -405,12 +405,12 @@ port@3 { reg = <3>; - label = "lan4"; + label = "lan2"; }; port@4 { reg = <4>; - label = "lan5"; + label = "lan1"; }; port@5 { -- cgit v0.10.2 From 0956254a2d5b9e2141385514553aeef694dfe3b5 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Mon, 8 Aug 2016 15:08:49 +0200 Subject: ovl: don't copy up opaqueness When a copy up of a directory occurs which has the opaque xattr set, the xattr remains in the upper directory. The immediate behavior with overlayfs is that the upper directory is not treated as opaque, however after a remount the opaque flag is used and upper directory is treated as opaque. This causes files created in the lower layer to be hidden when using multiple lower directories. Fix by not copying up the opaque flag. To reproduce: ----8<---------8<---------8<---------8<---------8<---------8<---- mkdir -p l/d/s u v w mnt mount -t overlay overlay -olowerdir=l,upperdir=u,workdir=w mnt rm -rf mnt/d/ mkdir -p mnt/d/n umount mnt mount -t overlay overlay -olowerdir=u:l,upperdir=v,workdir=w mnt touch mnt/d/foo umount mnt mount -t overlay overlay -olowerdir=u:l,upperdir=v,workdir=w mnt ls mnt/d ----8<---------8<---------8<---------8<---------8<---------8<---- output should be: "foo n" Reported-by: Derek McGowan Link: https://bugzilla.kernel.org/show_bug.cgi?id=151291 Signed-off-by: Miklos Szeredi Cc: diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 54e5d66..43fdc27 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -80,6 +80,8 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new) } for (name = buf; name < (buf + list_size); name += strlen(name) + 1) { + if (ovl_is_private_xattr(name)) + continue; retry: size = vfs_getxattr(old, name, value, value_size); if (size == -ERANGE) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 1b885c1..024352f 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -191,7 +191,7 @@ static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz) return err; } -static bool ovl_is_private_xattr(const char *name) +bool ovl_is_private_xattr(const char *name) { #define OVL_XATTR_PRE_NAME OVL_XATTR_PREFIX "." return strncmp(name, OVL_XATTR_PRE_NAME, diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index e4f5c95..34839bd 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -193,6 +193,7 @@ int ovl_removexattr(struct dentry *dentry, const char *name); struct posix_acl *ovl_get_acl(struct inode *inode, int type); int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags); int ovl_update_time(struct inode *inode, struct timespec *ts, int flags); +bool ovl_is_private_xattr(const char *name); struct inode *ovl_new_inode(struct super_block *sb, umode_t mode); struct inode *ovl_get_inode(struct super_block *sb, struct inode *realinode); -- cgit v0.10.2 From 557e37c05f28bad113d65d584699e8d8f29f70a3 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Fri, 1 Jul 2016 17:41:59 +0800 Subject: bus: vexpress-config: add missing of_node_put after calling of_parse_phandle of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: Lorenzo Pieralisi Acked-by: Liviu Dudau Signed-off-by: Peter Chen Signed-off-by: Sudeep Holla diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c index c3cb76b..9efdf1d 100644 --- a/drivers/bus/vexpress-config.c +++ b/drivers/bus/vexpress-config.c @@ -178,6 +178,7 @@ static int vexpress_config_populate(struct device_node *node) parent = class_find_device(vexpress_config_class, NULL, bridge, vexpress_config_node_match); + of_node_put(bridge); if (WARN_ON(!parent)) return -ENODEV; -- cgit v0.10.2 From b079bd555f6060cd6b435a1eb58ec3b8d255ebd0 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Mon, 4 Jul 2016 14:55:57 +0800 Subject: firmware: arm_scpi: add missing of_node_put after calling of_parse_phandle of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using it. Besides, of_address_to_resource always returns -EINVAL for error, delete the assignment for ret. Signed-off-by: Peter Chen Signed-off-by: Sudeep Holla diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c index 4388937..ce2bc2a 100644 --- a/drivers/firmware/arm_scpi.c +++ b/drivers/firmware/arm_scpi.c @@ -709,9 +709,10 @@ static int scpi_probe(struct platform_device *pdev) struct mbox_client *cl = &pchan->cl; struct device_node *shmem = of_parse_phandle(np, "shmem", idx); - if (of_address_to_resource(shmem, 0, &res)) { + ret = of_address_to_resource(shmem, 0, &res); + of_node_put(shmem); + if (ret) { dev_err(dev, "failed to get SCPI payload mem resource\n"); - ret = -EINVAL; goto err; } -- cgit v0.10.2 From b9700be51bf00bbe9e1dabcb4838d6aa420192d1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20F=C3=A4rber?= Date: Tue, 5 Jul 2016 06:04:08 +0200 Subject: ARM: dts: imx6sx-sabreauto: Fix misspelled property MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In commit 99fc5ba0bfb6 ("ARM: dts: imx6sx: add i.mx6sx sabreauto board support") it should've been enable-sdio-wakeup (not -wakup). But that is now considered a legacy name for wakeup-source, so directly use the new name instead, as done in commit 26cefdd15db1 for the other occurrence. Fixes: 26cefdd15db1 ("ARM: dts: imx: replace legacy wakeup property with 'wakeup-source'") Signed-off-by: Andreas Färber Acked-by: Sudeep Holla Signed-off-by: Shawn Guo diff --git a/arch/arm/boot/dts/imx6sx-sabreauto.dts b/arch/arm/boot/dts/imx6sx-sabreauto.dts index 96ea936..240a286 100644 --- a/arch/arm/boot/dts/imx6sx-sabreauto.dts +++ b/arch/arm/boot/dts/imx6sx-sabreauto.dts @@ -64,7 +64,7 @@ cd-gpios = <&gpio7 11 GPIO_ACTIVE_LOW>; no-1-8-v; keep-power-in-suspend; - enable-sdio-wakup; + wakeup-source; status = "okay"; }; -- cgit v0.10.2 From 7e196aa1a011da35a04cb1f161e186563aa8d8db Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 6 Jul 2016 12:18:34 +0000 Subject: clk: sunxi: pll2: Fix return value check in sun4i_pll2_setup() In case of error, the functions clk_register_composite() and clk_register_divider() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Signed-off-by: Maxime Ripard diff --git a/drivers/clk/sunxi/clk-a10-pll2.c b/drivers/clk/sunxi/clk-a10-pll2.c index 0ee1f36..d8eab90 100644 --- a/drivers/clk/sunxi/clk-a10-pll2.c +++ b/drivers/clk/sunxi/clk-a10-pll2.c @@ -73,7 +73,7 @@ static void __init sun4i_pll2_setup(struct device_node *node, SUN4I_PLL2_PRE_DIV_WIDTH, CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, &sun4i_a10_pll2_lock); - if (!prediv_clk) { + if (IS_ERR(prediv_clk)) { pr_err("Couldn't register the prediv clock\n"); goto err_free_array; } @@ -106,7 +106,7 @@ static void __init sun4i_pll2_setup(struct device_node *node, &mult->hw, &clk_multiplier_ops, &gate->hw, &clk_gate_ops, CLK_SET_RATE_PARENT); - if (!base_clk) { + if (IS_ERR(base_clk)) { pr_err("Couldn't register the base multiplier clock\n"); goto err_free_multiplier; } -- cgit v0.10.2 From fbe359f12ce40e3126bea959b135656e4a305897 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 6 Jul 2016 12:21:47 +0000 Subject: clk: sunxi: Fix return value check in sun8i_a23_mbus_setup() In case of error, the function of_io_request_and_map() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Signed-off-by: Maxime Ripard diff --git a/drivers/clk/sunxi/clk-sun8i-mbus.c b/drivers/clk/sunxi/clk-sun8i-mbus.c index 411d303..b200ebf 100644 --- a/drivers/clk/sunxi/clk-sun8i-mbus.c +++ b/drivers/clk/sunxi/clk-sun8i-mbus.c @@ -48,7 +48,7 @@ static void __init sun8i_a23_mbus_setup(struct device_node *node) return; reg = of_io_request_and_map(node, 0, of_node_full_name(node)); - if (!reg) { + if (IS_ERR(reg)) { pr_err("Could not get registers for sun8i-mbus-clk\n"); goto err_free_parents; } -- cgit v0.10.2 From 156ad0d7eae4825a0d94a4bf68571e97302f2501 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Tue, 26 Jul 2016 15:04:23 +0800 Subject: clk: sunxi-ng: Fix inverted test condition in ccu_helper_wait_for_lock The condition passed to read*_poll_timeout() is the break condition, i.e. wait for this condition to happen and return success. The original code assumed the opposite, resulting in a warning when the PLL clock rate was changed but never lost it's lock as far as the readout indicated. This was verified by checking the read out register value. Fixes: 1d80c14248d6 ("clk: sunxi-ng: Add common infrastructure") Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Maxime Ripard diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c index fc17b52..51d4bac 100644 --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -31,7 +31,7 @@ void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock) return; WARN_ON(readl_relaxed_poll_timeout(common->base + common->reg, reg, - !(reg & lock), 100, 70000)); + reg & lock, 100, 70000)); } int sunxi_ccu_probe(struct device_node *node, void __iomem *reg, -- cgit v0.10.2 From 06421a7821f9040467e0db2702309b72aa2b7af4 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Tue, 26 Jul 2016 15:04:24 +0800 Subject: clk: sunxi-ng: nk: Make ccu_nk_find_best static make C=2 reports: CHECK drivers/clk/sunxi-ng/ccu_nk.c drivers/clk/sunxi-ng/ccu_nk.c:17:6: warning: symbol 'ccu_nk_find_best' was not declared. Should it be static? ccu_nk_find_best is only used within ccu_nk.c. So make it static to get rid of this warning. Fixes: adbfb0056e03 ("clk: sunxi-ng: Add N-K-factor clock support") Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard diff --git a/drivers/clk/sunxi-ng/ccu_nk.c b/drivers/clk/sunxi-ng/ccu_nk.c index 4470ffc..d6fafb3 100644 --- a/drivers/clk/sunxi-ng/ccu_nk.c +++ b/drivers/clk/sunxi-ng/ccu_nk.c @@ -14,9 +14,9 @@ #include "ccu_gate.h" #include "ccu_nk.h" -void ccu_nk_find_best(unsigned long parent, unsigned long rate, - unsigned int max_n, unsigned int max_k, - unsigned int *n, unsigned int *k) +static void ccu_nk_find_best(unsigned long parent, unsigned long rate, + unsigned int max_n, unsigned int max_k, + unsigned int *n, unsigned int *k) { unsigned long best_rate = 0; unsigned int best_k = 0, best_n = 0; -- cgit v0.10.2 From fd837b08d98c0c9f4f31998f2ed55b9d8694082c Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Mon, 8 Aug 2016 17:29:28 +0100 Subject: KVM: arm64: ITS: return 1 on successful MSI injection According to the KVM API documentation a successful MSI injection should return a value > 0 on success. Return possible errors in vgic_its_trigger_msi() and report a successful injection back to userland, while also reporting the case where the MSI could not be delivered due to the guest not having the LPI mapped, for instance. Signed-off-by: Andre Przywara Reviewed-by: Eric Auger Reviewed-by: Christoffer Dall Signed-off-by: Christoffer Dall diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 56b0b7e..99ac022 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -337,6 +337,7 @@ */ #define E_ITS_MOVI_UNMAPPED_INTERRUPT 0x010107 #define E_ITS_MOVI_UNMAPPED_COLLECTION 0x010109 +#define E_ITS_INT_UNMAPPED_INTERRUPT 0x010307 #define E_ITS_CLEAR_UNMAPPED_INTERRUPT 0x010507 #define E_ITS_MAPD_DEVICE_OOR 0x010801 #define E_ITS_MAPC_PROCNUM_OOR 0x010902 diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 07411cf..1bd8adb 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -441,39 +441,48 @@ static unsigned long vgic_mmio_read_its_idregs(struct kvm *kvm, * Find the target VCPU and the LPI number for a given devid/eventid pair * and make this IRQ pending, possibly injecting it. * Must be called with the its_lock mutex held. + * Returns 0 on success, a positive error value for any ITS mapping + * related errors and negative error values for generic errors. */ -static void vgic_its_trigger_msi(struct kvm *kvm, struct vgic_its *its, - u32 devid, u32 eventid) +static int vgic_its_trigger_msi(struct kvm *kvm, struct vgic_its *its, + u32 devid, u32 eventid) { + struct kvm_vcpu *vcpu; struct its_itte *itte; if (!its->enabled) - return; + return -EBUSY; itte = find_itte(its, devid, eventid); - /* Triggering an unmapped IRQ gets silently dropped. */ - if (itte && its_is_collection_mapped(itte->collection)) { - struct kvm_vcpu *vcpu; - - vcpu = kvm_get_vcpu(kvm, itte->collection->target_addr); - if (vcpu && vcpu->arch.vgic_cpu.lpis_enabled) { - spin_lock(&itte->irq->irq_lock); - itte->irq->pending = true; - vgic_queue_irq_unlock(kvm, itte->irq); - } - } + if (!itte || !its_is_collection_mapped(itte->collection)) + return E_ITS_INT_UNMAPPED_INTERRUPT; + + vcpu = kvm_get_vcpu(kvm, itte->collection->target_addr); + if (!vcpu) + return E_ITS_INT_UNMAPPED_INTERRUPT; + + if (!vcpu->arch.vgic_cpu.lpis_enabled) + return -EBUSY; + + spin_lock(&itte->irq->irq_lock); + itte->irq->pending = true; + vgic_queue_irq_unlock(kvm, itte->irq); + + return 0; } /* * Queries the KVM IO bus framework to get the ITS pointer from the given * doorbell address. * We then call vgic_its_trigger_msi() with the decoded data. + * According to the KVM_SIGNAL_MSI API description returns 1 on success. */ int vgic_its_inject_msi(struct kvm *kvm, struct kvm_msi *msi) { u64 address; struct kvm_io_device *kvm_io_dev; struct vgic_io_device *iodev; + int ret; if (!vgic_has_its(kvm)) return -ENODEV; @@ -490,10 +499,21 @@ int vgic_its_inject_msi(struct kvm *kvm, struct kvm_msi *msi) iodev = container_of(kvm_io_dev, struct vgic_io_device, dev); mutex_lock(&iodev->its->its_lock); - vgic_its_trigger_msi(kvm, iodev->its, msi->devid, msi->data); + ret = vgic_its_trigger_msi(kvm, iodev->its, msi->devid, msi->data); mutex_unlock(&iodev->its->its_lock); - return 0; + if (ret < 0) + return ret; + + /* + * KVM_SIGNAL_MSI demands a return value > 0 for success and 0 + * if the guest has blocked the MSI. So we map any LPI mapping + * related error to that. + */ + if (ret) + return 0; + else + return 1; } /* Requires the its_lock to be held. */ @@ -981,9 +1001,7 @@ static int vgic_its_cmd_handle_int(struct kvm *kvm, struct vgic_its *its, u32 msi_data = its_cmd_get_id(its_cmd); u64 msi_devid = its_cmd_get_deviceid(its_cmd); - vgic_its_trigger_msi(kvm, its, msi_devid, msi_data); - - return 0; + return vgic_its_trigger_msi(kvm, its, msi_devid, msi_data); } /* -- cgit v0.10.2 From 764f21665a12e99f03124b4c8de722cdbff92213 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 9 Aug 2016 17:45:33 +0100 Subject: spi: Drop io_mutex in error paths A couple of error paths were missing drops of io_mutex. Reported-by: Julia Lawall Signed-off-by: Mark Brown diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 51ad42f..57179d5 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1159,6 +1159,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread) if (ret < 0) { dev_err(&master->dev, "Failed to power device: %d\n", ret); + mutex_unlock(&master->io_mutex); return; } } @@ -1174,6 +1175,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread) if (master->auto_runtime_pm) pm_runtime_put(master->dev.parent); + mutex_unlock(&master->io_mutex); return; } } -- cgit v0.10.2 From 8b078c603249239f597dc395ac182667c8e0af9c Mon Sep 17 00:00:00 2001 From: Mathias Koehrer Date: Tue, 9 Aug 2016 10:33:31 +0200 Subject: PCI: Update "pci=resource_alignment" documentation Some uio based PCI drivers, e.g., uio_cif, do not work if the assigned PCI memory resources are not page aligned. By using the kernel option "pci=resource_alignment=@:." it is possible to request page alignment for memory resources of devices. However, this is cumbersome when using several devices, and the bus/slot/func addresses may change if devices are added to or removed from the system. Extend the "pci=resource_alignment" option so we can specify the relevant devices via PCI vendor, device, subvendor, and subdevice IDs. The specification of the devices via IDs is indicated by a leading string "pci:" as argument to "pci=resource_alignment". The format of the specification is pci::[::] Examples: pci=resource_alignment=4096@pci:8086:9c22:103c:198f pci=resource_alignment=pci:8086:9c22 # defaults to PAGE_SIZE align [bhelgaas: changelog, use actual vendor/device IDs in examples] Signed-off-by: Mathias Koehrer Signed-off-by: Bjorn Helgaas diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 46c030a..a4f4d69 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3032,6 +3032,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. PAGE_SIZE is used as alignment. PCI-PCI bridge can be specified, if resource windows need to be expanded. + To specify the alignment for several + instances of a device, the PCI vendor, + device, subvendor, and subdevice may be + specified, e.g., 4096@pci:8086:9c22:103c:198f ecrc= Enable/disable PCIe ECRC (transaction layer end-to-end CRC checking). bios: Use BIOS/firmware settings. This is the -- cgit v0.10.2 From 06f4e94898918bcad00cdd4d349313a439d6911e Mon Sep 17 00:00:00 2001 From: Zefan Li Date: Tue, 9 Aug 2016 11:25:01 +0800 Subject: cpuset: make sure new tasks conform to the current config of the cpuset A new task inherits cpus_allowed and mems_allowed masks from its parent, but if someone changes cpuset's config by writing to cpuset.cpus/cpuset.mems before this new task is inserted into the cgroup's task list, the new task won't be updated accordingly. Signed-off-by: Zefan Li Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org diff --git a/kernel/cpuset.c b/kernel/cpuset.c index c7fd277..c27e533 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -2069,6 +2069,20 @@ static void cpuset_bind(struct cgroup_subsys_state *root_css) mutex_unlock(&cpuset_mutex); } +/* + * Make sure the new task conform to the current state of its parent, + * which could have been changed by cpuset just after it inherits the + * state from the parent and before it sits on the cgroup's task list. + */ +void cpuset_fork(struct task_struct *task) +{ + if (task_css_is_root(task, cpuset_cgrp_id)) + return; + + set_cpus_allowed_ptr(task, ¤t->cpus_allowed); + task->mems_allowed = current->mems_allowed; +} + struct cgroup_subsys cpuset_cgrp_subsys = { .css_alloc = cpuset_css_alloc, .css_online = cpuset_css_online, @@ -2079,6 +2093,7 @@ struct cgroup_subsys cpuset_cgrp_subsys = { .attach = cpuset_attach, .post_attach = cpuset_post_attach, .bind = cpuset_bind, + .fork = cpuset_fork, .legacy_cftypes = files, .early_init = true, }; -- cgit v0.10.2 From 99e5e886a0a59df267ff6838f763b789847df982 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Mon, 1 Aug 2016 20:25:33 +0200 Subject: KVM: arm64: vgic-its: Handle errors from vgic_add_lpi During low memory conditions, we could be dereferencing a NULL pointer when vgic_add_lpi fails to allocate memory. Consider for example this call sequence: vgic_its_cmd_handle_mapi itte->irq = vgic_add_lpi(kvm, lpi_nr); update_lpi_config(kvm, itte->irq, NULL); ret = kvm_read_guest(kvm, propbase + irq->intid ^^^^ kaboom? Instead, return an error pointer from vgic_add_lpi and check the return value from its single caller. Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 1bd8adb..d06330a 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -51,7 +51,7 @@ static struct vgic_irq *vgic_add_lpi(struct kvm *kvm, u32 intid) irq = kzalloc(sizeof(struct vgic_irq), GFP_KERNEL); if (!irq) - return NULL; + return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&irq->lpi_list); INIT_LIST_HEAD(&irq->ap_list); @@ -522,7 +522,8 @@ static void its_free_itte(struct kvm *kvm, struct its_itte *itte) list_del(&itte->itte_list); /* This put matches the get in vgic_add_lpi. */ - vgic_put_irq(kvm, itte->irq); + if (itte->irq) + vgic_put_irq(kvm, itte->irq); kfree(itte); } @@ -713,10 +714,11 @@ static int vgic_its_cmd_handle_mapi(struct kvm *kvm, struct vgic_its *its, u32 device_id = its_cmd_get_deviceid(its_cmd); u32 event_id = its_cmd_get_id(its_cmd); u32 coll_id = its_cmd_get_collection(its_cmd); - struct its_itte *itte; + struct its_itte *itte, *new_itte = NULL; struct its_device *device; struct its_collection *collection, *new_coll = NULL; int lpi_nr; + struct vgic_irq *irq; device = find_its_device(its, device_id); if (!device) @@ -747,13 +749,24 @@ static int vgic_its_cmd_handle_mapi(struct kvm *kvm, struct vgic_its *its, return -ENOMEM; } + new_itte = itte; itte->event_id = event_id; list_add_tail(&itte->itte_list, &device->itt_head); } itte->collection = collection; itte->lpi = lpi_nr; - itte->irq = vgic_add_lpi(kvm, lpi_nr); + + irq = vgic_add_lpi(kvm, lpi_nr); + if (IS_ERR(irq)) { + if (new_coll) + vgic_its_free_collection(its, coll_id); + if (new_itte) + its_free_itte(kvm, new_itte); + return PTR_ERR(irq); + } + itte->irq = irq; + update_affinity_itte(kvm, itte); /* -- cgit v0.10.2 From 2cccbb368a2bf27d98cf36bb424fbbf5572c0fab Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Tue, 2 Aug 2016 22:05:42 +0200 Subject: KVM: arm64: vgic-its: Plug race in vgic_put_irq Right now the following sequence of events can happen: 1. Thread X calls vgic_put_irq 2. Thread Y calls vgic_add_lpi 3. Thread Y gets lpi_list_lock 4. Thread X drops the ref count to 0 and blocks on lpi_list_lock 5. Thread Y finds the irq via the lpi_list_lock, raises the ref count to 1, and release the lpi_list_lock. 6. Thread X proceeds and frees the irq. Avoid this by holding the spinlock around the kref_put. Reviewed-by: Andre Przywara Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index e7aeac7..e83b7fe 100644 --- a/virt/kvm/arm/vgic/vgic.c +++ b/virt/kvm/arm/vgic/vgic.c @@ -117,17 +117,17 @@ static void vgic_irq_release(struct kref *ref) void vgic_put_irq(struct kvm *kvm, struct vgic_irq *irq) { - struct vgic_dist *dist; + struct vgic_dist *dist = &kvm->arch.vgic; if (irq->intid < VGIC_MIN_LPI) return; - if (!kref_put(&irq->refcount, vgic_irq_release)) + spin_lock(&dist->lpi_list_lock); + if (!kref_put(&irq->refcount, vgic_irq_release)) { + spin_unlock(&dist->lpi_list_lock); return; + }; - dist = &kvm->arch.vgic; - - spin_lock(&dist->lpi_list_lock); list_del(&irq->lpi_list); dist->lpi_list_count--; spin_unlock(&dist->lpi_list_lock); -- cgit v0.10.2 From 162f2db394a0efb270db3d93475ce466794a8eef Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 15 Jul 2016 10:12:49 +0200 Subject: ARM: dts: exynos: Properly select eMMC HighSpeed mode on Odroid XU Exynos5410 supports eMMC version 4.41 so HS200 is the top mode which should be configured. This is reflected in usage of "samsung,exynos5250-dw-mshc" compatible. However Odroid XU DTS contained also property "mmc-hs400-1_8v" which is parsed by MMC core therefore resulting in mixed configuration. MMC core set HS400 but dwmmc_exynos driver did not configure the data strobe for HS400 DDR mode. Removal of HS400 properties fixes semi-random mmc errors during boot: mmc_host mmc0: Bus speed (slot 0) = 400000000Hz (slot req 200000000Hz, actual 200000000HZ div = 1) mmc0: mmc_select_hs400 failed, error -84 mmc0: error -84 whilst initialising MMC card Signed-off-by: Krzysztof Kozlowski Reviewed-by: Alim Akhtar diff --git a/arch/arm/boot/dts/exynos5410-odroidxu.dts b/arch/arm/boot/dts/exynos5410-odroidxu.dts index d949931..f6d1352 100644 --- a/arch/arm/boot/dts/exynos5410-odroidxu.dts +++ b/arch/arm/boot/dts/exynos5410-odroidxu.dts @@ -447,14 +447,11 @@ samsung,dw-mshc-ciu-div = <3>; samsung,dw-mshc-sdr-timing = <0 4>; samsung,dw-mshc-ddr-timing = <0 2>; - samsung,dw-mshc-hs400-timing = <0 2>; - samsung,read-strobe-delay = <90>; pinctrl-names = "default"; pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8 &sd0_cd>; bus-width = <8>; cap-mmc-highspeed; mmc-hs200-1_8v; - mmc-hs400-1_8v; vmmc-supply = <&ldo20_reg>; vqmmc-supply = <&ldo11_reg>; }; -- cgit v0.10.2 From 6f4deb18a505523eb7925d646574a95f9e982ff7 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Mon, 8 Aug 2016 15:58:56 +0200 Subject: gpio: max730x: set gpiochip data pointer before using it gpiochip_add_data() has to be called before calling max7301_direction_input() [ 4.389883] Unable to handle kernel paging request for data at address 0x00000018 [ 4.397282] Faulting instruction address: 0xc01a8cbc [ 4.402023] Oops: Kernel access of bad area, sig: 11 [#1] [ 4.407331] PREEMPT CMPC885 [ 4.410131] CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 4.5.0-gacdfdee #39 [ 4.418592] Workqueue: deferwq deferred_probe_work_func [ 4.423711] task: c60798b0 ti: c608a000 task.ti: c608a000 [ 4.429038] NIP: c01a8cbc LR: c01a8e24 CTR: c01ff028 [ 4.433953] REGS: c608bad0 TRAP: 0300 Not tainted (4.5.0-s3k-dev-gacdfdee-svn-dirty) [ 4.441847] MSR: 00009032 CR: 33039553 XER: a000f940 [ 4.448395] DAR: 00000018 DSISR: c0000000 GPR00: c01a8e24 c608bb80 c60798b0 c60d6f6c 00000004 00000002 07de2900 00700000 GPR08: 00000000 00000000 c608a000 00001032 35039553 00000000 c002f37c c6010b64 GPR16: c6010a48 c6010a14 c6010a00 00000000 c0450000 c0453568 c0453438 c050db14 GPR24: c62662bc 00000009 ffffffaa c60d6f5d 00000001 00000000 00000000 00000000 [ 4.480371] NIP [c01a8cbc] max7301_direction_input+0x20/0x9c [ 4.485951] LR [c01a8e24] __max730x_probe+0xec/0x138 [ 4.490812] Call Trace: [ 4.493268] [c608bba0] [c01a8e24] __max730x_probe+0xec/0x138 [ 4.498878] [c608bbc0] [c01cc368] driver_probe_device+0x190/0x38c [ 4.504895] [c608bbf0] [c01ca918] bus_for_each_drv+0x58/0xb4 [ 4.510489] [c608bc20] [c01cc04c] __device_attach+0x8c/0x110 [ 4.516082] [c608bc50] [c01cab80] bus_probe_device+0x34/0xb8 [ 4.521673] [c608bc70] [c01c96c8] device_add+0x3c0/0x598 [ 4.526925] [c608bcb0] [c0200f90] spi_add_device+0x114/0x160 [ 4.532512] [c608bcd0] [c02018d0] spi_register_master+0x6e0/0x7c8 [ 4.538537] [c608bd20] [c02019fc] devm_spi_register_master+0x44/0x8c [ 4.544824] [c608bd40] [c0203854] of_fsl_spi_probe+0x458/0x57c [ 4.550587] [c608bda0] [c01cd828] platform_drv_probe+0x30/0x74 [ 4.556366] [c608bdb0] [c01cc368] driver_probe_device+0x190/0x38c [ 4.562383] [c608bde0] [c01ca918] bus_for_each_drv+0x58/0xb4 [ 4.567977] [c608be10] [c01cc04c] __device_attach+0x8c/0x110 [ 4.573572] [c608be40] [c01cab80] bus_probe_device+0x34/0xb8 [ 4.579170] [c608be60] [c01cb9b4] deferred_probe_work_func+0xa4/0xc4 [ 4.585438] [c608be80] [c0029c04] process_one_work+0x22c/0x414 [ 4.591201] [c608bea0] [c002a100] worker_thread+0x314/0x5c0 [ 4.596722] [c608bef0] [c002f444] kthread+0xc8/0xcc [ 4.601538] [c608bf40] [c000af84] ret_from_kernel_thread+0x5c/0x64 [ 4.607596] Instruction dump: [ 4.610530] 7c0803a6 bba10014 38210020 4e800020 7c0802a6 9421ffe0 38840004 bf810010 [ 4.618188] 90010024 549cf0be 83c30010 549d0f7c <813e0018> 7fc3f378 7d3f2430 57ff07fe [ 4.626041] ---[ end trace 303adb021dd4caf2 ]--- Cc: stable@vger.kernel.org fixes: 5e45e01916197 ("gpio: max730x: use gpiochip data pointer") Signed-off-by: Christophe Leroy Signed-off-by: Linus Walleij diff --git a/drivers/gpio/gpio-max730x.c b/drivers/gpio/gpio-max730x.c index 0880736..946d091 100644 --- a/drivers/gpio/gpio-max730x.c +++ b/drivers/gpio/gpio-max730x.c @@ -192,6 +192,10 @@ int __max730x_probe(struct max7301 *ts) ts->chip.parent = dev; ts->chip.owner = THIS_MODULE; + ret = gpiochip_add_data(&ts->chip, ts); + if (ret) + goto exit_destroy; + /* * initialize pullups according to platform data and cache the * register values for later use. @@ -213,10 +217,6 @@ int __max730x_probe(struct max7301 *ts) } } - ret = gpiochip_add_data(&ts->chip, ts); - if (ret) - goto exit_destroy; - return ret; exit_destroy: -- cgit v0.10.2 From 18b43e89d295cc65151c505c643c98fb2c320e59 Mon Sep 17 00:00:00 2001 From: Daniel Mentz Date: Thu, 4 Aug 2016 17:56:53 -0700 Subject: ARC: Call trace_hardirqs_on() before enabling irqs trace_hardirqs_on_caller() in lockdep.c expects to be called before, not after interrupts are actually enabled. The following comment in kernel/locking/lockdep.c substantiates this claim: " /* * We're enabling irqs and according to our state above irqs weren't * already enabled, yet we find the hardware thinks they are in fact * enabled.. someone messed up their IRQ state tracing. */ " An example can be found in include/linux/irqflags.h: do { trace_hardirqs_on(); raw_local_irq_enable(); } while (0) Without this change, we hit the following DEBUG_LOCKS_WARN_ON. [ 7.760000] ------------[ cut here ]------------ [ 7.760000] WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:2711 resume_user_mode_begin+0x48/0xf0 [ 7.770000] DEBUG_LOCKS_WARN_ON(!irqs_disabled()) [ 7.780000] Modules linked in: [ 7.780000] CPU: 0 PID: 1 Comm: init Not tainted 4.7.0-00003-gc668bb9-dirty #366 [ 7.790000] [ 7.790000] Stack Trace: [ 7.790000] arc_unwind_core.constprop.1+0xa4/0x118 [ 7.800000] warn_slowpath_fmt+0x72/0x158 [ 7.800000] resume_user_mode_begin+0x48/0xf0 [ 7.810000] ---[ end trace 6f6a7a8fae20d2f0 ]--- Signed-off-by: Daniel Mentz Cc: Signed-off-by: Vineet Gupta diff --git a/arch/arc/include/asm/irqflags-compact.h b/arch/arc/include/asm/irqflags-compact.h index c1d3645..4c6eed8 100644 --- a/arch/arc/include/asm/irqflags-compact.h +++ b/arch/arc/include/asm/irqflags-compact.h @@ -188,10 +188,10 @@ static inline int arch_irqs_disabled(void) .endm .macro IRQ_ENABLE scratch + TRACE_ASM_IRQ_ENABLE lr \scratch, [status32] or \scratch, \scratch, (STATUS_E1_MASK | STATUS_E2_MASK) flag \scratch - TRACE_ASM_IRQ_ENABLE .endm #endif /* __ASSEMBLY__ */ -- cgit v0.10.2 From 45c3b08a117e2232fc8d7b9e849ead36386f4f96 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Mon, 13 Jun 2016 16:38:27 +0200 Subject: ARC: Elide redundant setup of DMA callbacks For resources shared by all cores such as SLC and IOC, only the master core needs to do any setups / enabling / disabling etc. Cc: Signed-off-by: Vineet Gupta diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c index 5a294b2..0b10efe 100644 --- a/arch/arc/mm/cache.c +++ b/arch/arc/mm/cache.c @@ -921,6 +921,15 @@ void arc_cache_init(void) printk(arc_cache_mumbojumbo(0, str, sizeof(str))); + /* + * Only master CPU needs to execute rest of function: + * - Assume SMP so all cores will have same cache config so + * any geomtry checks will be same for all + * - IOC setup / dma callbacks only need to be setup once + */ + if (cpu) + return; + if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) { struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache; -- cgit v0.10.2 From ed0ab110235c659fdb3f73d27907b1b45b89cf30 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Thu, 14 Jul 2016 10:42:35 +0800 Subject: clk: sunxi-ng: Fix inverted test condition in ccu_helper_wait_for_lock The condition passed to read*_poll_timeout() is the break condition, i.e. wait for this condition to happen and return success. The original code assumed the opposite, resulting in a warning when the PLL clock rate was changed but never lost it's lock as far as the readout indicated. This was verified by checking the read out register value. Fixes: 1d80c14248d6 ("clk: sunxi-ng: Add common infrastructure") Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Stephen Boyd diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c index fc17b52..51d4bac 100644 --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -31,7 +31,7 @@ void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock) return; WARN_ON(readl_relaxed_poll_timeout(common->base + common->reg, reg, - !(reg & lock), 100, 70000)); + reg & lock, 100, 70000)); } int sunxi_ccu_probe(struct device_node *node, void __iomem *reg, -- cgit v0.10.2 From 1625f4529957738be7d87cf157e107b8fb9d23b9 Mon Sep 17 00:00:00 2001 From: Alexey Kodanev Date: Wed, 10 Aug 2016 13:54:57 +0300 Subject: net/xfrm_input: fix possible NULL deref of tunnel.ip6->parms.i_key Running LTP 'icmp-uni-basic.sh -6 -p ipcomp -m tunnel' test over openvswitch + veth can trigger kernel panic: BUG: unable to handle kernel NULL pointer dereference at 00000000000000e0 IP: [] xfrm_input+0x82/0x750 ... [] xfrm6_rcv_spi+0x1e/0x20 [] xfrm6_tunnel_rcv+0x42/0x50 [xfrm6_tunnel] [] tunnel6_rcv+0x3e/0x8c [tunnel6] [] ip6_input_finish+0xd5/0x430 [] ip6_input+0x33/0x90 [] ip6_rcv_finish+0xa5/0xb0 ... It seems that tunnel.ip6 can have garbage values and also dereferenced without a proper check, only tunnel.ip4 is being verified. Fix it by adding one more if block for AF_INET6 and initialize tunnel.ip6 with NULL inside xfrm6_rcv_spi() (which is similar to xfrm4_rcv_spi()). Fixes: 049f8e2 ("xfrm: Override skb->mark with tunnel->parm.i_key in xfrm_input") Signed-off-by: Alexey Kodanev Signed-off-by: Steffen Klassert diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c index 0eaab1f..00a2d40 100644 --- a/net/ipv6/xfrm6_input.c +++ b/net/ipv6/xfrm6_input.c @@ -23,6 +23,7 @@ int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb) int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi) { + XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6 = NULL; XFRM_SPI_SKB_CB(skb)->family = AF_INET6; XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct ipv6hdr, daddr); return xfrm_input(skb, nexthdr, spi, 0); diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c index 1c4ad47..6e3f025 100644 --- a/net/xfrm/xfrm_input.c +++ b/net/xfrm/xfrm_input.c @@ -207,15 +207,15 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) family = XFRM_SPI_SKB_CB(skb)->family; /* if tunnel is present override skb->mark value with tunnel i_key */ - if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) { - switch (family) { - case AF_INET: + switch (family) { + case AF_INET: + if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) mark = be32_to_cpu(XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4->parms.i_key); - break; - case AF_INET6: + break; + case AF_INET6: + if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6) mark = be32_to_cpu(XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6->parms.i_key); - break; - } + break; } /* Allocate new secpath or COW existing one. */ -- cgit v0.10.2 From 70fcad495b9903d362bdbf9ffba23259294064c8 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Thu, 11 Aug 2016 14:39:00 +0100 Subject: ASoC: Fix leak of rtd in soc_bind_dai_link If we fail to find a platform we simply return EPROBE_DEFER, but we have allocated the rtd pointer. All error paths before soc_add_pcm_runtime need to call soc_free_pcm_runtime first to avoid leaking the rtd pointer. A suitable error path already exists and is used else where in the function so simply use that here as well. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 16369ca..b0e23db 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1056,7 +1056,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card, if (!rtd->platform) { dev_err(card->dev, "ASoC: platform %s not registered\n", dai_link->platform_name); - return -EPROBE_DEFER; + goto _err_defer; } soc_add_pcm_runtime(card, rtd); -- cgit v0.10.2 From fa54aade5338937146bb6b8af93d2c27f6787ae1 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Thu, 11 Aug 2016 14:40:04 +0100 Subject: ASoC: wm2000: Fix return of uninitialised varible Anything that sets ret in wm2000_anc_transition will have immediately returned anyway as such we will always return an uninitialised ret at the bottom of the function. Simply replace the return with a return 0; Signed-off-by: Charles Keepax Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/wm2000.c b/sound/soc/codecs/wm2000.c index a67ea10..f266439 100644 --- a/sound/soc/codecs/wm2000.c +++ b/sound/soc/codecs/wm2000.c @@ -581,7 +581,7 @@ static int wm2000_anc_transition(struct wm2000_priv *wm2000, if (anc_transitions[i].dest == ANC_OFF) clk_disable_unprepare(wm2000->mclk); - return ret; + return 0; } static int wm2000_anc_set_mode(struct wm2000_priv *wm2000) -- cgit v0.10.2 From d0141191a20289f8955c1e03dad08e42e6f71ca9 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 11 Aug 2016 11:50:30 -0400 Subject: ext4: fix xattr shifting when expanding inodes The code in ext4_expand_extra_isize_ea() treated new_extra_isize argument sometimes as the desired target i_extra_isize and sometimes as the amount by which we need to grow current i_extra_isize. These happen to coincide when i_extra_isize is 0 which used to be the common case and so nobody noticed this until recently when we added i_projid to the inode and so i_extra_isize now needs to grow from 28 to 32 bytes. The result of these bugs was that we sometimes unnecessarily decided to move xattrs out of inode even if there was enough space and we often ended up corrupting in-inode xattrs because arguments to ext4_xattr_shift_entries() were just wrong. This could demonstrate itself as BUG_ON in ext4_xattr_shift_entries() triggering. Fix the problem by introducing new isize_diff variable and use it where appropriate. CC: stable@vger.kernel.org # 4.4.x Reported-by: Dave Chinner Signed-off-by: Jan Kara Signed-off-by: Theodore Ts'o diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 39e9cfb..cb1d7b4 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1353,11 +1353,13 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, size_t min_offs, free; int total_ino; void *base, *start, *end; - int extra_isize = 0, error = 0, tried_min_extra_isize = 0; + int error = 0, tried_min_extra_isize = 0; int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize); + int isize_diff; /* How much do we need to grow i_extra_isize */ down_write(&EXT4_I(inode)->xattr_sem); retry: + isize_diff = new_extra_isize - EXT4_I(inode)->i_extra_isize; if (EXT4_I(inode)->i_extra_isize >= new_extra_isize) { up_write(&EXT4_I(inode)->xattr_sem); return 0; @@ -1382,7 +1384,7 @@ retry: goto cleanup; free = ext4_xattr_free_space(last, &min_offs, base, &total_ino); - if (free >= new_extra_isize) { + if (free >= isize_diff) { entry = IFIRST(header); ext4_xattr_shift_entries(entry, EXT4_I(inode)->i_extra_isize - new_extra_isize, (void *)raw_inode + @@ -1414,7 +1416,7 @@ retry: end = bh->b_data + bh->b_size; min_offs = end - base; free = ext4_xattr_free_space(first, &min_offs, base, NULL); - if (free < new_extra_isize) { + if (free < isize_diff) { if (!tried_min_extra_isize && s_min_extra_isize) { tried_min_extra_isize++; new_extra_isize = s_min_extra_isize; @@ -1428,7 +1430,7 @@ retry: free = inode->i_sb->s_blocksize; } - while (new_extra_isize > 0) { + while (isize_diff > 0) { size_t offs, size, entry_size; struct ext4_xattr_entry *small_entry = NULL; struct ext4_xattr_info i = { @@ -1459,7 +1461,7 @@ retry: EXT4_XATTR_SIZE(le32_to_cpu(last->e_value_size)) + EXT4_XATTR_LEN(last->e_name_len); if (total_size <= free && total_size < min_total_size) { - if (total_size < new_extra_isize) { + if (total_size < isize_diff) { small_entry = last; } else { entry = last; @@ -1516,20 +1518,19 @@ retry: goto cleanup; entry = IFIRST(header); - if (entry_size + EXT4_XATTR_SIZE(size) >= new_extra_isize) - shift_bytes = new_extra_isize; + if (entry_size + EXT4_XATTR_SIZE(size) >= isize_diff) + shift_bytes = isize_diff; else shift_bytes = entry_size + size; /* Adjust the offsets and shift the remaining entries ahead */ - ext4_xattr_shift_entries(entry, EXT4_I(inode)->i_extra_isize - - shift_bytes, (void *)raw_inode + - EXT4_GOOD_OLD_INODE_SIZE + extra_isize + shift_bytes, + ext4_xattr_shift_entries(entry, -shift_bytes, + (void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE + + EXT4_I(inode)->i_extra_isize + shift_bytes, (void *)header, total_ino - entry_size, inode->i_sb->s_blocksize); - extra_isize += shift_bytes; - new_extra_isize -= shift_bytes; - EXT4_I(inode)->i_extra_isize = extra_isize; + isize_diff -= shift_bytes; + EXT4_I(inode)->i_extra_isize += shift_bytes; i.name = b_entry_name; i.value = buffer; -- cgit v0.10.2 From 418c12d08dc64a45107c467ec1ba29b5e69b0715 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 11 Aug 2016 11:58:32 -0400 Subject: ext4: fix xattr shifting when expanding inodes part 2 When multiple xattrs need to be moved out of inode, we did not properly recompute total size of xattr headers in the inode and the new header position. Thus when moving the second and further xattr we asked ext4_xattr_shift_entries() to move too much and from the wrong place, resulting in possible xattr value corruption or general memory corruption. CC: stable@vger.kernel.org # 4.4.x Signed-off-by: Jan Kara Signed-off-by: Theodore Ts'o diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index cb1d7b4..b18b1ff 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1516,6 +1516,7 @@ retry: error = ext4_xattr_ibody_set(handle, inode, &i, is); if (error) goto cleanup; + total_ino -= entry_size; entry = IFIRST(header); if (entry_size + EXT4_XATTR_SIZE(size) >= isize_diff) @@ -1526,11 +1527,11 @@ retry: ext4_xattr_shift_entries(entry, -shift_bytes, (void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE + EXT4_I(inode)->i_extra_isize + shift_bytes, - (void *)header, total_ino - entry_size, - inode->i_sb->s_blocksize); + (void *)header, total_ino, inode->i_sb->s_blocksize); isize_diff -= shift_bytes; EXT4_I(inode)->i_extra_isize += shift_bytes; + header = IHDR(inode, raw_inode); i.name = b_entry_name; i.value = buffer; -- cgit v0.10.2 From 443a8c41cd49de66a3fda45b32b9860ea0292b84 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 11 Aug 2016 12:00:01 -0400 Subject: ext4: properly align shifted xattrs when expanding inodes We did not count with the padding of xattr value when computing desired shift of xattrs in the inode when expanding i_extra_isize. As a result we could create unaligned start of inline xattrs. Account for alignment properly. CC: stable@vger.kernel.org # 4.4.x- Signed-off-by: Jan Kara diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index b18b1ff..c893f00 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1522,7 +1522,7 @@ retry: if (entry_size + EXT4_XATTR_SIZE(size) >= isize_diff) shift_bytes = isize_diff; else - shift_bytes = entry_size + size; + shift_bytes = entry_size + EXT4_XATTR_SIZE(size); /* Adjust the offsets and shift the remaining entries ahead */ ext4_xattr_shift_entries(entry, -shift_bytes, (void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE + -- cgit v0.10.2 From 2e81a4eeedcaa66e35f58b81e0755b87057ce392 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 11 Aug 2016 12:38:55 -0400 Subject: ext4: avoid deadlock when expanding inode size When we need to move xattrs into external xattr block, we call ext4_xattr_block_set() from ext4_expand_extra_isize_ea(). That may end up calling ext4_mark_inode_dirty() again which will recurse back into the inode expansion code leading to deadlocks. Protect from recursion using EXT4_STATE_NO_EXPAND inode flag and move its management into ext4_expand_extra_isize_ea() since its manipulation is safe there (due to xattr_sem) from possible races with ext4_xattr_set_handle() which plays with it as well. CC: stable@vger.kernel.org # 4.4.x Signed-off-by: Jan Kara Signed-off-by: Theodore Ts'o diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 5a6277d..13c95b2 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5466,8 +5466,6 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode) sbi->s_want_extra_isize, iloc, handle); if (ret) { - ext4_set_inode_state(inode, - EXT4_STATE_NO_EXPAND); if (mnt_count != le16_to_cpu(sbi->s_es->s_mnt_count)) { ext4_warning(inode->i_sb, diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index c893f00..2eb935c 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1358,12 +1358,14 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, int isize_diff; /* How much do we need to grow i_extra_isize */ down_write(&EXT4_I(inode)->xattr_sem); + /* + * Set EXT4_STATE_NO_EXPAND to avoid recursion when marking inode dirty + */ + ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND); retry: isize_diff = new_extra_isize - EXT4_I(inode)->i_extra_isize; - if (EXT4_I(inode)->i_extra_isize >= new_extra_isize) { - up_write(&EXT4_I(inode)->xattr_sem); - return 0; - } + if (EXT4_I(inode)->i_extra_isize >= new_extra_isize) + goto out; header = IHDR(inode, raw_inode); entry = IFIRST(header); @@ -1392,8 +1394,7 @@ retry: (void *)header, total_ino, inode->i_sb->s_blocksize); EXT4_I(inode)->i_extra_isize = new_extra_isize; - error = 0; - goto cleanup; + goto out; } /* @@ -1553,6 +1554,8 @@ retry: kfree(bs); } brelse(bh); +out: + ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND); up_write(&EXT4_I(inode)->xattr_sem); return 0; @@ -1564,6 +1567,10 @@ cleanup: kfree(is); kfree(bs); brelse(bh); + /* + * We deliberately leave EXT4_STATE_NO_EXPAND set here since inode + * size expansion failed. + */ up_write(&EXT4_I(inode)->xattr_sem); return error; } -- cgit v0.10.2 From 9b4b3f6a062b22550e62523efe5213776cdd426b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 11 Aug 2016 07:26:01 -0700 Subject: ahci: disable correct irq for dummy ports irq already contains the interrupt number for the port, don't add the port index to it. Signed-off-by: Christoph Hellwig Signed-off-by: Tejun Heo Fixes: d684a90d38e2 ("ahci: per-port msix support") Cc: stable@vger.kernel.org v4.5+ diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 7461a58..dcf2c72 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -2524,7 +2524,7 @@ static int ahci_host_activate_multi_irqs(struct ata_host *host, /* Do not receive interrupts sent by dummy ports */ if (!pp) { - disable_irq(irq + i); + disable_irq(irq); continue; } -- cgit v0.10.2 From a3f457d9636b3f5ae4fc6502cb0c95f60f5e342b Mon Sep 17 00:00:00 2001 From: Chris Zhong Date: Tue, 9 Aug 2016 11:02:33 -0700 Subject: clk: rockchip: fix rk3399 aclk_vio gate bit Fix incorrect rk3399 aclk_vio gating bit, it should be 0, not 10. Fixes: 115510053e5e ("clk: rockchip: add clock controller for the RK3399") Signed-off-by: Chris Zhong Reviewed-by: Xing Zheng Reviewed-by: Guenter Roeck Signed-off-by: Heiko Stuebner diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index c109d80..314eab6 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -1071,7 +1071,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { /* vio */ COMPOSITE(ACLK_VIO, "aclk_vio", mux_pll_src_cpll_gpll_ppll_p, CLK_IGNORE_UNUSED, RK3399_CLKSEL_CON(42), 6, 2, MFLAGS, 0, 5, DFLAGS, - RK3399_CLKGATE_CON(11), 10, GFLAGS), + RK3399_CLKGATE_CON(11), 0, GFLAGS), COMPOSITE_NOMUX(PCLK_VIO, "pclk_vio", "aclk_vio", 0, RK3399_CLKSEL_CON(43), 0, 5, DFLAGS, RK3399_CLKGATE_CON(11), 1, GFLAGS), -- cgit v0.10.2 From e0cb1b84163720ec67ff0e54397fd3f57ad4a4dd Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Wed, 10 Aug 2016 09:29:43 +0200 Subject: clk: renesas: r8a7795: Fix SD clocks According to the datasheet, SDn clocks are from the SDSRC clock. And the SDSRC has a 1/2 divider. So, we should have ".sdsrc" as an internal core clock. Otherwise, since the sdhi driver will calculate clock for a sd card using the wrong parent clock rate, and then performance will be not good. Fixes: 90c073e53909da85 ("clk: shmobile: r8a7795: Add SD divider support") Signed-off-by: Yoshihiro Shimoda Acked-by: Dirk Behme Tested-by: Wolfram Sang Signed-off-by: Geert Uytterhoeven Cc: stable@vger.kernel.org Signed-off-by: Stephen Boyd diff --git a/drivers/clk/renesas/r8a7795-cpg-mssr.c b/drivers/clk/renesas/r8a7795-cpg-mssr.c index d359c92..e38bf60 100644 --- a/drivers/clk/renesas/r8a7795-cpg-mssr.c +++ b/drivers/clk/renesas/r8a7795-cpg-mssr.c @@ -69,6 +69,7 @@ static const struct cpg_core_clk r8a7795_core_clks[] __initconst = { DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1), DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1), DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1), + DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1), /* Core Clock Outputs */ DEF_FIXED("ztr", R8A7795_CLK_ZTR, CLK_PLL1_DIV2, 6, 1), @@ -87,10 +88,10 @@ static const struct cpg_core_clk r8a7795_core_clks[] __initconst = { DEF_FIXED("s3d2", R8A7795_CLK_S3D2, CLK_S3, 2, 1), DEF_FIXED("s3d4", R8A7795_CLK_S3D4, CLK_S3, 4, 1), - DEF_GEN3_SD("sd0", R8A7795_CLK_SD0, CLK_PLL1_DIV2, 0x0074), - DEF_GEN3_SD("sd1", R8A7795_CLK_SD1, CLK_PLL1_DIV2, 0x0078), - DEF_GEN3_SD("sd2", R8A7795_CLK_SD2, CLK_PLL1_DIV2, 0x0268), - DEF_GEN3_SD("sd3", R8A7795_CLK_SD3, CLK_PLL1_DIV2, 0x026c), + DEF_GEN3_SD("sd0", R8A7795_CLK_SD0, CLK_SDSRC, 0x0074), + DEF_GEN3_SD("sd1", R8A7795_CLK_SD1, CLK_SDSRC, 0x0078), + DEF_GEN3_SD("sd2", R8A7795_CLK_SD2, CLK_SDSRC, 0x0268), + DEF_GEN3_SD("sd3", R8A7795_CLK_SD3, CLK_SDSRC, 0x026c), DEF_FIXED("cl", R8A7795_CLK_CL, CLK_PLL1_DIV2, 48, 1), DEF_FIXED("cp", R8A7795_CLK_CP, CLK_EXTAL, 2, 1), -- cgit v0.10.2 From 20c389e656a89e2302017bf3f499cb5a31a2a7ba Mon Sep 17 00:00:00 2001 From: Xing Zheng Date: Tue, 2 Aug 2016 15:19:58 +0800 Subject: clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399 Dues to incorrect diagram, we need to fix incorrect bits for (c/g)pll_aclk_emmc_src: cpll_aclk_emmc_src --> G6[13] gpll_aclk_emmc_src --> G6[12] Fixes: 115510053e5e ("clk: rockchip: add clock controller for the RK3399") Signed-off-by: Xing Zheng Reviewed-by: Shawn Lin Signed-off-by: Heiko Stuebner diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index 314eab6..01fa60e 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -923,9 +923,9 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { RK3399_CLKGATE_CON(6), 14, GFLAGS), GATE(0, "cpll_aclk_emmc_src", "cpll", CLK_IGNORE_UNUSED, - RK3399_CLKGATE_CON(6), 12, GFLAGS), - GATE(0, "gpll_aclk_emmc_src", "gpll", CLK_IGNORE_UNUSED, RK3399_CLKGATE_CON(6), 13, GFLAGS), + GATE(0, "gpll_aclk_emmc_src", "gpll", CLK_IGNORE_UNUSED, + RK3399_CLKGATE_CON(6), 12, GFLAGS), COMPOSITE_NOGATE(ACLK_EMMC, "aclk_emmc", mux_aclk_emmc_p, CLK_IGNORE_UNUSED, RK3399_CLKSEL_CON(21), 7, 1, MFLAGS, 0, 5, DFLAGS), GATE(ACLK_EMMC_CORE, "aclk_emmccore", "aclk_emmc", CLK_IGNORE_UNUSED, -- cgit v0.10.2 From b33ecca87df99fa6fff8a1d455de96f436934dcf Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 8 Aug 2016 21:55:39 +0200 Subject: phy-sun4i-usb: Add support for peripheral-only mode Use the new of_usb_get_dr_mode_by_phy() function to get the dr_mode from the musb controller node instead of assuming that having an id_det gpio means otg mode, and not having one means host mode. Implement peripheral-only mode by adding a sun4i_usb_phy0_get_id_det helper which looks at the dr_mode, always registering our extcon and always monitoring vbus. If dr_mode is not specified in the dts, do not register phy0 as we then do not know how to treat it. This is actually a good thing as this means we will not be registering phy0 on devices where the otg controller is not enabled in the devicetree. Signed-off-by: Hans de Goede Acked-by: Kishon Vijay Abraham I Signed-off-by: Kishon Vijay Abraham I diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index 0a45bc6..8c7eb33 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #define REG_ISCR 0x00 @@ -110,6 +111,7 @@ struct sun4i_usb_phy_cfg { struct sun4i_usb_phy_data { void __iomem *base; const struct sun4i_usb_phy_cfg *cfg; + enum usb_dr_mode dr_mode; struct mutex mutex; struct sun4i_usb_phy { struct phy *phy; @@ -120,6 +122,7 @@ struct sun4i_usb_phy_data { bool regulator_on; int index; } phys[MAX_PHYS]; + int first_phy; /* phy0 / otg related variables */ struct extcon_dev *extcon; bool phy0_init; @@ -285,16 +288,10 @@ static int sun4i_usb_phy_init(struct phy *_phy) sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_DPDM_PULLUP_EN); sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_ID_PULLUP_EN); - if (data->id_det_gpio) { - /* OTG mode, force ISCR and cable state updates */ - data->id_det = -1; - data->vbus_det = -1; - queue_delayed_work(system_wq, &data->detect, 0); - } else { - /* Host only mode */ - sun4i_usb_phy0_set_id_detect(_phy, 0); - sun4i_usb_phy0_set_vbus_detect(_phy, 1); - } + /* Force ISCR and cable state updates */ + data->id_det = -1; + data->vbus_det = -1; + queue_delayed_work(system_wq, &data->detect, 0); } return 0; @@ -319,6 +316,19 @@ static int sun4i_usb_phy_exit(struct phy *_phy) return 0; } +static int sun4i_usb_phy0_get_id_det(struct sun4i_usb_phy_data *data) +{ + switch (data->dr_mode) { + case USB_DR_MODE_OTG: + return gpiod_get_value_cansleep(data->id_det_gpio); + case USB_DR_MODE_HOST: + return 0; + case USB_DR_MODE_PERIPHERAL: + default: + return 1; + } +} + static int sun4i_usb_phy0_get_vbus_det(struct sun4i_usb_phy_data *data) { if (data->vbus_det_gpio) @@ -432,7 +442,10 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) struct phy *phy0 = data->phys[0].phy; int id_det, vbus_det, id_notify = 0, vbus_notify = 0; - id_det = gpiod_get_value_cansleep(data->id_det_gpio); + if (phy0 == NULL) + return; + + id_det = sun4i_usb_phy0_get_id_det(data); vbus_det = sun4i_usb_phy0_get_vbus_det(data); mutex_lock(&phy0->mutex); @@ -448,7 +461,8 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) * without vbus detection report vbus low for long enough for * the musb-ip to end the current device session. */ - if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) { + if (data->dr_mode == USB_DR_MODE_OTG && + !sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) { sun4i_usb_phy0_set_vbus_detect(phy0, 0); msleep(200); sun4i_usb_phy0_set_vbus_detect(phy0, 1); @@ -474,7 +488,8 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) * without vbus detection report vbus low for long enough to * the musb-ip to end the current host session. */ - if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) { + if (data->dr_mode == USB_DR_MODE_OTG && + !sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) { mutex_lock(&phy0->mutex); sun4i_usb_phy0_set_vbus_detect(phy0, 0); msleep(1000); @@ -519,7 +534,8 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev, { struct sun4i_usb_phy_data *data = dev_get_drvdata(dev); - if (args->args[0] >= data->cfg->num_phys) + if (args->args[0] < data->first_phy || + args->args[0] >= data->cfg->num_phys) return ERR_PTR(-ENODEV); return data->phys[args->args[0]].phy; @@ -593,13 +609,17 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) return -EPROBE_DEFER; } - /* vbus_det without id_det makes no sense, and is not supported */ - if (sun4i_usb_phy0_have_vbus_det(data) && !data->id_det_gpio) { - dev_err(dev, "usb0_id_det missing or invalid\n"); - return -ENODEV; - } - - if (data->id_det_gpio) { + data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0); + switch (data->dr_mode) { + case USB_DR_MODE_OTG: + /* otg without id_det makes no sense, and is not supported */ + if (!data->id_det_gpio) { + dev_err(dev, "usb0_id_det missing or invalid\n"); + return -ENODEV; + } + /* fall through */ + case USB_DR_MODE_HOST: + case USB_DR_MODE_PERIPHERAL: data->extcon = devm_extcon_dev_allocate(dev, sun4i_usb_phy0_cable); if (IS_ERR(data->extcon)) @@ -610,9 +630,13 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) dev_err(dev, "failed to register extcon: %d\n", ret); return ret; } + break; + default: + dev_info(dev, "dr_mode unknown, not registering usb phy0\n"); + data->first_phy = 1; } - for (i = 0; i < data->cfg->num_phys; i++) { + for (i = data->first_phy; i < data->cfg->num_phys; i++) { struct sun4i_usb_phy *phy = data->phys + i; char name[16]; -- cgit v0.10.2 From 1766e7b3763a0707c2fda9689a7866dceed07b7a Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 10 Aug 2016 18:49:27 +0530 Subject: mfd: da8xx-cfgchip: New header file for CFGCHIP registers Create a new header file for TI DA8XX SoC CFGCHIPx registers. This will be used by a number of planned drivers including a new USB PHY driver and common clock framework drivers. The same defines *will* be removed from the platform_data header, once all the users start using the new syscon device header. This also fixes the following compiler error caused due to a dependent patch not merged. drivers/phy/phy-da8xx-usb.c:19:37: fatal error: linux/mfd/da8xx-cfgchip.h: No such file or directory #include Signed-off-by: David Lechner Acked-by: Lee Jones Reported-by: Arnd Bergmann Signed-off-by: Kishon Vijay Abraham I diff --git a/include/linux/mfd/da8xx-cfgchip.h b/include/linux/mfd/da8xx-cfgchip.h new file mode 100644 index 0000000..304985e --- /dev/null +++ b/include/linux/mfd/da8xx-cfgchip.h @@ -0,0 +1,153 @@ +/* + * TI DaVinci DA8xx CHIPCFGx registers for syscon consumers. + * + * Copyright (C) 2016 David Lechner + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_MFD_DA8XX_CFGCHIP_H +#define __LINUX_MFD_DA8XX_CFGCHIP_H + +#include + +/* register offset (32-bit registers) */ +#define CFGCHIP(n) ((n) * 4) + +/* CFGCHIP0 (PLL0/EDMA3_0) register bits */ +#define CFGCHIP0_PLL_MASTER_LOCK BIT(4) +#define CFGCHIP0_EDMA30TC1DBS(n) ((n) << 2) +#define CFGCHIP0_EDMA30TC1DBS_MASK CFGCHIP0_EDMA30TC1DBS(0x3) +#define CFGCHIP0_EDMA30TC1DBS_16 CFGCHIP0_EDMA30TC1DBS(0x0) +#define CFGCHIP0_EDMA30TC1DBS_32 CFGCHIP0_EDMA30TC1DBS(0x1) +#define CFGCHIP0_EDMA30TC1DBS_64 CFGCHIP0_EDMA30TC1DBS(0x2) +#define CFGCHIP0_EDMA30TC0DBS(n) ((n) << 0) +#define CFGCHIP0_EDMA30TC0DBS_MASK CFGCHIP0_EDMA30TC0DBS(0x3) +#define CFGCHIP0_EDMA30TC0DBS_16 CFGCHIP0_EDMA30TC0DBS(0x0) +#define CFGCHIP0_EDMA30TC0DBS_32 CFGCHIP0_EDMA30TC0DBS(0x1) +#define CFGCHIP0_EDMA30TC0DBS_64 CFGCHIP0_EDMA30TC0DBS(0x2) + +/* CFGCHIP1 (eCAP/HPI/EDMA3_1/eHRPWM TBCLK/McASP0 AMUTEIN) register bits */ +#define CFGCHIP1_CAP2SRC(n) ((n) << 27) +#define CFGCHIP1_CAP2SRC_MASK CFGCHIP1_CAP2SRC(0x1f) +#define CFGCHIP1_CAP2SRC_ECAP_PIN CFGCHIP1_CAP2SRC(0x0) +#define CFGCHIP1_CAP2SRC_MCASP0_TX CFGCHIP1_CAP2SRC(0x1) +#define CFGCHIP1_CAP2SRC_MCASP0_RX CFGCHIP1_CAP2SRC(0x2) +#define CFGCHIP1_CAP2SRC_EMAC_C0_RX_THRESHOLD CFGCHIP1_CAP2SRC(0x7) +#define CFGCHIP1_CAP2SRC_EMAC_C0_RX CFGCHIP1_CAP2SRC(0x8) +#define CFGCHIP1_CAP2SRC_EMAC_C0_TX CFGCHIP1_CAP2SRC(0x9) +#define CFGCHIP1_CAP2SRC_EMAC_C0_MISC CFGCHIP1_CAP2SRC(0xa) +#define CFGCHIP1_CAP2SRC_EMAC_C1_RX_THRESHOLD CFGCHIP1_CAP2SRC(0xb) +#define CFGCHIP1_CAP2SRC_EMAC_C1_RX CFGCHIP1_CAP2SRC(0xc) +#define CFGCHIP1_CAP2SRC_EMAC_C1_TX CFGCHIP1_CAP2SRC(0xd) +#define CFGCHIP1_CAP2SRC_EMAC_C1_MISC CFGCHIP1_CAP2SRC(0xe) +#define CFGCHIP1_CAP2SRC_EMAC_C2_RX_THRESHOLD CFGCHIP1_CAP2SRC(0xf) +#define CFGCHIP1_CAP2SRC_EMAC_C2_RX CFGCHIP1_CAP2SRC(0x10) +#define CFGCHIP1_CAP2SRC_EMAC_C2_TX CFGCHIP1_CAP2SRC(0x11) +#define CFGCHIP1_CAP2SRC_EMAC_C2_MISC CFGCHIP1_CAP2SRC(0x12) +#define CFGCHIP1_CAP1SRC(n) ((n) << 22) +#define CFGCHIP1_CAP1SRC_MASK CFGCHIP1_CAP1SRC(0x1f) +#define CFGCHIP1_CAP1SRC_ECAP_PIN CFGCHIP1_CAP1SRC(0x0) +#define CFGCHIP1_CAP1SRC_MCASP0_TX CFGCHIP1_CAP1SRC(0x1) +#define CFGCHIP1_CAP1SRC_MCASP0_RX CFGCHIP1_CAP1SRC(0x2) +#define CFGCHIP1_CAP1SRC_EMAC_C0_RX_THRESHOLD CFGCHIP1_CAP1SRC(0x7) +#define CFGCHIP1_CAP1SRC_EMAC_C0_RX CFGCHIP1_CAP1SRC(0x8) +#define CFGCHIP1_CAP1SRC_EMAC_C0_TX CFGCHIP1_CAP1SRC(0x9) +#define CFGCHIP1_CAP1SRC_EMAC_C0_MISC CFGCHIP1_CAP1SRC(0xa) +#define CFGCHIP1_CAP1SRC_EMAC_C1_RX_THRESHOLD CFGCHIP1_CAP1SRC(0xb) +#define CFGCHIP1_CAP1SRC_EMAC_C1_RX CFGCHIP1_CAP1SRC(0xc) +#define CFGCHIP1_CAP1SRC_EMAC_C1_TX CFGCHIP1_CAP1SRC(0xd) +#define CFGCHIP1_CAP1SRC_EMAC_C1_MISC CFGCHIP1_CAP1SRC(0xe) +#define CFGCHIP1_CAP1SRC_EMAC_C2_RX_THRESHOLD CFGCHIP1_CAP1SRC(0xf) +#define CFGCHIP1_CAP1SRC_EMAC_C2_RX CFGCHIP1_CAP1SRC(0x10) +#define CFGCHIP1_CAP1SRC_EMAC_C2_TX CFGCHIP1_CAP1SRC(0x11) +#define CFGCHIP1_CAP1SRC_EMAC_C2_MISC CFGCHIP1_CAP1SRC(0x12) +#define CFGCHIP1_CAP0SRC(n) ((n) << 17) +#define CFGCHIP1_CAP0SRC_MASK CFGCHIP1_CAP0SRC(0x1f) +#define CFGCHIP1_CAP0SRC_ECAP_PIN CFGCHIP1_CAP0SRC(0x0) +#define CFGCHIP1_CAP0SRC_MCASP0_TX CFGCHIP1_CAP0SRC(0x1) +#define CFGCHIP1_CAP0SRC_MCASP0_RX CFGCHIP1_CAP0SRC(0x2) +#define CFGCHIP1_CAP0SRC_EMAC_C0_RX_THRESHOLD CFGCHIP1_CAP0SRC(0x7) +#define CFGCHIP1_CAP0SRC_EMAC_C0_RX CFGCHIP1_CAP0SRC(0x8) +#define CFGCHIP1_CAP0SRC_EMAC_C0_TX CFGCHIP1_CAP0SRC(0x9) +#define CFGCHIP1_CAP0SRC_EMAC_C0_MISC CFGCHIP1_CAP0SRC(0xa) +#define CFGCHIP1_CAP0SRC_EMAC_C1_RX_THRESHOLD CFGCHIP1_CAP0SRC(0xb) +#define CFGCHIP1_CAP0SRC_EMAC_C1_RX CFGCHIP1_CAP0SRC(0xc) +#define CFGCHIP1_CAP0SRC_EMAC_C1_TX CFGCHIP1_CAP0SRC(0xd) +#define CFGCHIP1_CAP0SRC_EMAC_C1_MISC CFGCHIP1_CAP0SRC(0xe) +#define CFGCHIP1_CAP0SRC_EMAC_C2_RX_THRESHOLD CFGCHIP1_CAP0SRC(0xf) +#define CFGCHIP1_CAP0SRC_EMAC_C2_RX CFGCHIP1_CAP0SRC(0x10) +#define CFGCHIP1_CAP0SRC_EMAC_C2_TX CFGCHIP1_CAP0SRC(0x11) +#define CFGCHIP1_CAP0SRC_EMAC_C2_MISC CFGCHIP1_CAP0SRC(0x12) +#define CFGCHIP1_HPIBYTEAD BIT(16) +#define CFGCHIP1_HPIENA BIT(15) +#define CFGCHIP0_EDMA31TC0DBS(n) ((n) << 13) +#define CFGCHIP0_EDMA31TC0DBS_MASK CFGCHIP0_EDMA31TC0DBS(0x3) +#define CFGCHIP0_EDMA31TC0DBS_16 CFGCHIP0_EDMA31TC0DBS(0x0) +#define CFGCHIP0_EDMA31TC0DBS_32 CFGCHIP0_EDMA31TC0DBS(0x1) +#define CFGCHIP0_EDMA31TC0DBS_64 CFGCHIP0_EDMA31TC0DBS(0x2) +#define CFGCHIP1_TBCLKSYNC BIT(12) +#define CFGCHIP1_AMUTESEL0(n) ((n) << 0) +#define CFGCHIP1_AMUTESEL0_MASK CFGCHIP1_AMUTESEL0(0xf) +#define CFGCHIP1_AMUTESEL0_LOW CFGCHIP1_AMUTESEL0(0x0) +#define CFGCHIP1_AMUTESEL0_BANK_0 CFGCHIP1_AMUTESEL0(0x1) +#define CFGCHIP1_AMUTESEL0_BANK_1 CFGCHIP1_AMUTESEL0(0x2) +#define CFGCHIP1_AMUTESEL0_BANK_2 CFGCHIP1_AMUTESEL0(0x3) +#define CFGCHIP1_AMUTESEL0_BANK_3 CFGCHIP1_AMUTESEL0(0x4) +#define CFGCHIP1_AMUTESEL0_BANK_4 CFGCHIP1_AMUTESEL0(0x5) +#define CFGCHIP1_AMUTESEL0_BANK_5 CFGCHIP1_AMUTESEL0(0x6) +#define CFGCHIP1_AMUTESEL0_BANK_6 CFGCHIP1_AMUTESEL0(0x7) +#define CFGCHIP1_AMUTESEL0_BANK_7 CFGCHIP1_AMUTESEL0(0x8) + +/* CFGCHIP2 (USB PHY) register bits */ +#define CFGCHIP2_PHYCLKGD BIT(17) +#define CFGCHIP2_VBUSSENSE BIT(16) +#define CFGCHIP2_RESET BIT(15) +#define CFGCHIP2_OTGMODE(n) ((n) << 13) +#define CFGCHIP2_OTGMODE_MASK CFGCHIP2_OTGMODE(0x3) +#define CFGCHIP2_OTGMODE_NO_OVERRIDE CFGCHIP2_OTGMODE(0x0) +#define CFGCHIP2_OTGMODE_FORCE_HOST CFGCHIP2_OTGMODE(0x1) +#define CFGCHIP2_OTGMODE_FORCE_DEVICE CFGCHIP2_OTGMODE(0x2) +#define CFGCHIP2_OTGMODE_FORCE_HOST_VBUS_LOW CFGCHIP2_OTGMODE(0x3) +#define CFGCHIP2_USB1PHYCLKMUX BIT(12) +#define CFGCHIP2_USB2PHYCLKMUX BIT(11) +#define CFGCHIP2_PHYPWRDN BIT(10) +#define CFGCHIP2_OTGPWRDN BIT(9) +#define CFGCHIP2_DATPOL BIT(8) +#define CFGCHIP2_USB1SUSPENDM BIT(7) +#define CFGCHIP2_PHY_PLLON BIT(6) +#define CFGCHIP2_SESENDEN BIT(5) +#define CFGCHIP2_VBDTCTEN BIT(4) +#define CFGCHIP2_REFFREQ(n) ((n) << 0) +#define CFGCHIP2_REFFREQ_MASK CFGCHIP2_REFFREQ(0xf) +#define CFGCHIP2_REFFREQ_12MHZ CFGCHIP2_REFFREQ(0x1) +#define CFGCHIP2_REFFREQ_24MHZ CFGCHIP2_REFFREQ(0x2) +#define CFGCHIP2_REFFREQ_48MHZ CFGCHIP2_REFFREQ(0x3) +#define CFGCHIP2_REFFREQ_19_2MHZ CFGCHIP2_REFFREQ(0x4) +#define CFGCHIP2_REFFREQ_38_4MHZ CFGCHIP2_REFFREQ(0x5) +#define CFGCHIP2_REFFREQ_13MHZ CFGCHIP2_REFFREQ(0x6) +#define CFGCHIP2_REFFREQ_26MHZ CFGCHIP2_REFFREQ(0x7) +#define CFGCHIP2_REFFREQ_20MHZ CFGCHIP2_REFFREQ(0x8) +#define CFGCHIP2_REFFREQ_40MHZ CFGCHIP2_REFFREQ(0x9) + +/* CFGCHIP3 (EMAC/uPP/PLL1/ASYNC3/PRU/DIV4.5/EMIFA) register bits */ +#define CFGCHIP3_RMII_SEL BIT(8) +#define CFGCHIP3_UPP_TX_CLKSRC BIT(6) +#define CFGCHIP3_PLL1_MASTER_LOCK BIT(5) +#define CFGCHIP3_ASYNC3_CLKSRC BIT(4) +#define CFGCHIP3_PRUEVTSEL BIT(3) +#define CFGCHIP3_DIV45PENA BIT(2) +#define CFGCHIP3_EMA_CLKSRC BIT(1) + +/* CFGCHIP4 (McASP0 AMUNTEIN) register bits */ +#define CFGCHIP4_AMUTECLR0 BIT(0) + +#endif /* __LINUX_MFD_DA8XX_CFGCHIP_H */ -- cgit v0.10.2 From bf8ca651e1f8f054b39b6b3b95d6f515c3c857d5 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 10 Aug 2016 18:04:44 +0800 Subject: phy: brcm-sata: Return proper error if brcm_sata_phy_init fails Return proper error instead of 0 if brcm_sata_phy_init fails. Signed-off-by: Axel Lin Signed-off-by: Kishon Vijay Abraham I diff --git a/drivers/phy/phy-brcm-sata.c b/drivers/phy/phy-brcm-sata.c index 18d6626..8ffc44a 100644 --- a/drivers/phy/phy-brcm-sata.c +++ b/drivers/phy/phy-brcm-sata.c @@ -367,7 +367,7 @@ static int brcm_sata_phy_init(struct phy *phy) rc = -ENODEV; }; - return 0; + return rc; } static const struct phy_ops phy_ops = { -- cgit v0.10.2 From 017300da3a4547d85e52c2484fc0bd759e1bbcdb Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Wed, 6 Jul 2016 08:00:06 +0200 Subject: phy: sun9i-usb: fix error handling This is likely that checking 'phy->hsic_clk' instead of 'phy->clk' is expected here. Signed-off-by: Christophe JAILLET Acked-by: Chen-Yu Tsai diff --git a/drivers/phy/phy-sun9i-usb.c b/drivers/phy/phy-sun9i-usb.c index ac4f31a..28fce4b 100644 --- a/drivers/phy/phy-sun9i-usb.c +++ b/drivers/phy/phy-sun9i-usb.c @@ -141,9 +141,9 @@ static int sun9i_usb_phy_probe(struct platform_device *pdev) } phy->hsic_clk = devm_clk_get(dev, "hsic_12M"); - if (IS_ERR(phy->clk)) { + if (IS_ERR(phy->hsic_clk)) { dev_err(dev, "failed to get hsic_12M clock\n"); - return PTR_ERR(phy->clk); + return PTR_ERR(phy->hsic_clk); } phy->reset = devm_reset_control_get(dev, "hsic"); -- cgit v0.10.2 From 979cf59acc9d634cc140aadd0d2915947ab303cc Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 12 Aug 2016 11:45:18 +0000 Subject: ASoC: Intel: Skylake: Fix error return code in skl_probe() Fix to return error code -ENODEV from the error handling case instead of 0, as done elsewhere in this function. Fixes: 87b2bdf02278 ("ASoC: Intel: Skylake: Initialize NHLT table") Signed-off-by: Wei Yongjun Acked-By: Vinod Koul Signed-off-by: Mark Brown diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index cd59536..e3e7641 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -672,8 +672,10 @@ static int skl_probe(struct pci_dev *pci, skl->nhlt = skl_nhlt_init(bus->dev); - if (skl->nhlt == NULL) + if (skl->nhlt == NULL) { + err = -ENODEV; goto out_free; + } skl_nhlt_update_topology_bin(skl); -- cgit v0.10.2 From 4608d96fb491125657fd8183a35921e4d4e27bc8 Mon Sep 17 00:00:00 2001 From: Xing Zheng Date: Tue, 2 Aug 2016 15:19:57 +0800 Subject: clk: rockchip: fix incorrect GATE bits for {c, g}pll_aclk_perihp_src on rk3399 Sorry to refer incorrect clock diagram, we double check it that the bits configuration of the Xpll_aclk_perihp_src need to be fixed: bit 1 - shows aclk_perihp_cpll_src_en bit 0 - shows aclk_perihp_gpll_src_en Through the testing that plug/unplug the USB ethernet cable on the RK3399 kevin board. 1. the hclk_host0 and hclk_host1 are endpoint clocks: cpll --> G5[1] --> aclk_perihp_cpll_src --\ |--> hclk_host0 | --> ... ---> | gpll --> G5[0] --> aclk_perihp_gpll_src --/ |--> hclk_host1 2. there is no clock below the cpll_aclk_perihp_src, and the hclk_hostX are below the gpll_aclk_perihp_src: pll_cpll 1 1 800000000 0 0 cpll 7 19 800000000 0 0 cpll_aclk_perihp_src 0 0 800000000 0 0 ... pll_gpll 1 1 594000000 0 0 gpll 10 10 594000000 0 0 gpll_aclk_perihp_src 2 2 594000000 0 0 hclk_perihp 5 5 74250000 0 0 hclk_host1_arb 2 2 74250000 0 0 hclk_host1 2 2 74250000 0 0 hclk_host0_arb 2 2 74250000 0 0 hclk_host0 2 2 74250000 0 0 3. by default, G5[0] and G5[1] are enabled: localhost ~ # mem r 0xff760314 0x000003e0 4. close the G5[1] (aclk_perihp_cpll_src), and plug/unplug USB ethernet cable, the DUT still works well: localhost ~ # mem w 0xff760314 0xffff03e2 localhost ~ # mem r 0xff760314 0x000003e2 plug/unplug, the work statue is ok 5. close the G5[0] (aclk_perihp_gpll_src), , and plug/unplug USB ethernet cable, the DUT will be crashed: localhost ~ # mem w 0xff760314 0xffff03e1 localhost ~ # mem r 0xff760314 0x000003e1 plug/unplug, the DUT is crashed Summary: bit 1 - shows aclk_perihp_cpll_src_en bit 0 - shows aclk_perihp_gpll_src_en Fixes: 3bd14ae9da91 ("clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src") Signed-off-by: Xing Zheng [here the clock-documentation in the manual was actually stating the wrong bits and thus only Xing's testing above revealed the issue] Signed-off-by: Heiko Stuebner diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index 01fa60e..ec5b2fd 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -833,9 +833,9 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { /* perihp */ GATE(0, "cpll_aclk_perihp_src", "cpll", CLK_IGNORE_UNUSED, - RK3399_CLKGATE_CON(5), 0, GFLAGS), - GATE(0, "gpll_aclk_perihp_src", "gpll", CLK_IGNORE_UNUSED, RK3399_CLKGATE_CON(5), 1, GFLAGS), + GATE(0, "gpll_aclk_perihp_src", "gpll", CLK_IGNORE_UNUSED, + RK3399_CLKGATE_CON(5), 0, GFLAGS), COMPOSITE(ACLK_PERIHP, "aclk_perihp", mux_aclk_perihp_p, CLK_IGNORE_UNUSED, RK3399_CLKSEL_CON(14), 7, 1, MFLAGS, 0, 5, DFLAGS, RK3399_CLKGATE_CON(5), 2, GFLAGS), -- cgit v0.10.2 From 1c8d477a77e2d1d3504419e7f2e02e6422becf9a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 14 Aug 2016 12:47:49 -0400 Subject: pNFS/flexfiles: Fix layoutstat periodic reporting Putting the periodicity timer in the mirror instances is causing non-scalable reporting behaviour and missed reporting intervals. When you recall layouts and/or implement client side mirroring, it leads to consecutive reports with only a few ms between RPC calls. Signed-off-by: Trond Myklebust Fixes: d0379a5d066a9 ("pNFS/flexfiles: Support server-supplied...") diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index e6206ea..ee1c94c 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -37,6 +37,7 @@ ff_layout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) if (ffl) { INIT_LIST_HEAD(&ffl->error_list); INIT_LIST_HEAD(&ffl->mirrors); + ffl->last_report_time = ktime_get(); return &ffl->generic_hdr; } else return NULL; @@ -640,19 +641,18 @@ nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror, { static const ktime_t notime = {0}; s64 report_interval = FF_LAYOUTSTATS_REPORT_INTERVAL; + struct nfs4_flexfile_layout *ffl = FF_LAYOUT_FROM_HDR(mirror->layout); nfs4_ff_start_busy_timer(&layoutstat->busy_timer, now); if (ktime_equal(mirror->start_time, notime)) mirror->start_time = now; - if (ktime_equal(mirror->last_report_time, notime)) - mirror->last_report_time = now; if (mirror->report_interval != 0) report_interval = (s64)mirror->report_interval * 1000LL; else if (layoutstats_timer != 0) report_interval = (s64)layoutstats_timer * 1000LL; - if (ktime_to_ms(ktime_sub(now, mirror->last_report_time)) >= + if (ktime_to_ms(ktime_sub(now, ffl->last_report_time)) >= report_interval) { - mirror->last_report_time = now; + ffl->last_report_time = now; return true; } diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h index 1bcdb15..3ee0c9f 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.h +++ b/fs/nfs/flexfilelayout/flexfilelayout.h @@ -84,7 +84,6 @@ struct nfs4_ff_layout_mirror { struct nfs4_ff_layoutstat read_stat; struct nfs4_ff_layoutstat write_stat; ktime_t start_time; - ktime_t last_report_time; u32 report_interval; }; @@ -101,6 +100,7 @@ struct nfs4_flexfile_layout { struct pnfs_ds_commit_info commit_info; struct list_head mirrors; struct list_head error_list; /* nfs4_ff_layout_ds_err */ + ktime_t last_report_time; /* Layoutstat report times */ }; static inline struct nfs4_flexfile_layout * -- cgit v0.10.2 From 5a5a1d614287a647b36dff3f40c2b0ceabbc83ec Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Fri, 12 Aug 2016 01:05:08 +0300 Subject: USB: serial: mos7720: fix non-atomic allocation in write path There is an allocation with GFP_KERNEL flag in mos7720_write(), while it may be called from interrupt context. Follow-up for commit 191252837626 ("USB: kobil_sct: fix non-atomic allocation in write path") Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Cc: stable Signed-off-by: Johan Hovold diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 5608af4..de9992b 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1252,7 +1252,7 @@ static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, - GFP_KERNEL); + GFP_ATOMIC); if (!urb->transfer_buffer) goto exit; } -- cgit v0.10.2 From 3b7c7e52efda0d4640060de747768360ba70a7c0 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Fri, 12 Aug 2016 01:05:09 +0300 Subject: USB: serial: mos7840: fix non-atomic allocation in write path There is an allocation with GFP_KERNEL flag in mos7840_write(), while it may be called from interrupt context. Follow-up for commit 191252837626 ("USB: kobil_sct: fix non-atomic allocation in write path") Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Cc: stable Signed-off-by: Johan Hovold diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index ed378fb..57426d7 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1340,8 +1340,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, } if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = - kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, + GFP_ATOMIC); if (!urb->transfer_buffer) goto exit; } -- cgit v0.10.2 From 7ef9153d9af5fe7ce32dcc0f558bfcfc3d2b3016 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 15 Aug 2016 15:17:41 +0200 Subject: misc: delete bh1780 driver The Rohm BH1780 ambient light sensor has a new driver with extended functionality (proper runtime PM) in the appropriate framework IIO, it can be found at: drivers/iio/light/bh1780.c The MISC driver symbol CONFIG_SENSORS_BH1780 does not appear in any defconfigs, so it should safe to delete. Cc: Hemanth V Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index a216b46..d002528 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -345,16 +345,6 @@ config SENSORS_TSL2550 This driver can also be built as a module. If so, the module will be called tsl2550. -config SENSORS_BH1780 - tristate "ROHM BH1780GLI ambient light sensor" - depends on I2C && SYSFS - help - If you say yes here you get support for the ROHM BH1780GLI - ambient light sensor. - - This driver can also be built as a module. If so, the module - will be called bh1780gli. - config SENSORS_BH1770 tristate "BH1770GLC / SFH7770 combined ALS - Proximity sensor" depends on I2C diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 7410c6d..fb32516 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_TIFM_CORE) += tifm_core.o obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o obj-$(CONFIG_PHANTOM) += phantom.o obj-$(CONFIG_QCOM_COINCELL) += qcom-coincell.o -obj-$(CONFIG_SENSORS_BH1780) += bh1780gli.o obj-$(CONFIG_SENSORS_BH1770) += bh1770glc.o obj-$(CONFIG_SENSORS_APDS990X) += apds990x.o obj-$(CONFIG_SGI_IOC4) += ioc4.o diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c deleted file mode 100644 index 7f90ce5..0000000 --- a/drivers/misc/bh1780gli.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - * bh1780gli.c - * ROHM Ambient Light Sensor Driver - * - * Copyright (C) 2010 Texas Instruments - * Author: Hemanth V - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ -#include -#include -#include -#include -#include -#include -#include - -#define BH1780_REG_CONTROL 0x80 -#define BH1780_REG_PARTID 0x8A -#define BH1780_REG_MANFID 0x8B -#define BH1780_REG_DLOW 0x8C -#define BH1780_REG_DHIGH 0x8D - -#define BH1780_REVMASK (0xf) -#define BH1780_POWMASK (0x3) -#define BH1780_POFF (0x0) -#define BH1780_PON (0x3) - -/* power on settling time in ms */ -#define BH1780_PON_DELAY 2 - -struct bh1780_data { - struct i2c_client *client; - int power_state; - /* lock for sysfs operations */ - struct mutex lock; -}; - -static int bh1780_write(struct bh1780_data *ddata, u8 reg, u8 val, char *msg) -{ - int ret = i2c_smbus_write_byte_data(ddata->client, reg, val); - if (ret < 0) - dev_err(&ddata->client->dev, - "i2c_smbus_write_byte_data failed error %d Register (%s)\n", - ret, msg); - return ret; -} - -static int bh1780_read(struct bh1780_data *ddata, u8 reg, char *msg) -{ - int ret = i2c_smbus_read_byte_data(ddata->client, reg); - if (ret < 0) - dev_err(&ddata->client->dev, - "i2c_smbus_read_byte_data failed error %d Register (%s)\n", - ret, msg); - return ret; -} - -static ssize_t bh1780_show_lux(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct platform_device *pdev = to_platform_device(dev); - struct bh1780_data *ddata = platform_get_drvdata(pdev); - int lsb, msb; - - lsb = bh1780_read(ddata, BH1780_REG_DLOW, "DLOW"); - if (lsb < 0) - return lsb; - - msb = bh1780_read(ddata, BH1780_REG_DHIGH, "DHIGH"); - if (msb < 0) - return msb; - - return sprintf(buf, "%d\n", (msb << 8) | lsb); -} - -static ssize_t bh1780_show_power_state(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct platform_device *pdev = to_platform_device(dev); - struct bh1780_data *ddata = platform_get_drvdata(pdev); - int state; - - state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL"); - if (state < 0) - return state; - - return sprintf(buf, "%d\n", state & BH1780_POWMASK); -} - -static ssize_t bh1780_store_power_state(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct platform_device *pdev = to_platform_device(dev); - struct bh1780_data *ddata = platform_get_drvdata(pdev); - unsigned long val; - int error; - - error = kstrtoul(buf, 0, &val); - if (error) - return error; - - if (val < BH1780_POFF || val > BH1780_PON) - return -EINVAL; - - mutex_lock(&ddata->lock); - - error = bh1780_write(ddata, BH1780_REG_CONTROL, val, "CONTROL"); - if (error < 0) { - mutex_unlock(&ddata->lock); - return error; - } - - msleep(BH1780_PON_DELAY); - ddata->power_state = val; - mutex_unlock(&ddata->lock); - - return count; -} - -static DEVICE_ATTR(lux, S_IRUGO, bh1780_show_lux, NULL); - -static DEVICE_ATTR(power_state, S_IWUSR | S_IRUGO, - bh1780_show_power_state, bh1780_store_power_state); - -static struct attribute *bh1780_attributes[] = { - &dev_attr_power_state.attr, - &dev_attr_lux.attr, - NULL -}; - -static const struct attribute_group bh1780_attr_group = { - .attrs = bh1780_attributes, -}; - -static int bh1780_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int ret; - struct bh1780_data *ddata; - struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); - - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) - return -EIO; - - ddata = devm_kzalloc(&client->dev, sizeof(struct bh1780_data), - GFP_KERNEL); - if (ddata == NULL) - return -ENOMEM; - - ddata->client = client; - i2c_set_clientdata(client, ddata); - - ret = bh1780_read(ddata, BH1780_REG_PARTID, "PART ID"); - if (ret < 0) - return ret; - - dev_info(&client->dev, "Ambient Light Sensor, Rev : %d\n", - (ret & BH1780_REVMASK)); - - mutex_init(&ddata->lock); - - return sysfs_create_group(&client->dev.kobj, &bh1780_attr_group); -} - -static int bh1780_remove(struct i2c_client *client) -{ - sysfs_remove_group(&client->dev.kobj, &bh1780_attr_group); - - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int bh1780_suspend(struct device *dev) -{ - struct bh1780_data *ddata; - int state, ret; - struct i2c_client *client = to_i2c_client(dev); - - ddata = i2c_get_clientdata(client); - state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL"); - if (state < 0) - return state; - - ddata->power_state = state & BH1780_POWMASK; - - ret = bh1780_write(ddata, BH1780_REG_CONTROL, BH1780_POFF, - "CONTROL"); - - if (ret < 0) - return ret; - - return 0; -} - -static int bh1780_resume(struct device *dev) -{ - struct bh1780_data *ddata; - int state, ret; - struct i2c_client *client = to_i2c_client(dev); - - ddata = i2c_get_clientdata(client); - state = ddata->power_state; - ret = bh1780_write(ddata, BH1780_REG_CONTROL, state, - "CONTROL"); - - if (ret < 0) - return ret; - - return 0; -} -#endif /* CONFIG_PM_SLEEP */ - -static SIMPLE_DEV_PM_OPS(bh1780_pm, bh1780_suspend, bh1780_resume); - -static const struct i2c_device_id bh1780_id[] = { - { "bh1780", 0 }, - { }, -}; - -MODULE_DEVICE_TABLE(i2c, bh1780_id); - -#ifdef CONFIG_OF -static const struct of_device_id of_bh1780_match[] = { - { .compatible = "rohm,bh1780gli", }, - {}, -}; - -MODULE_DEVICE_TABLE(of, of_bh1780_match); -#endif - -static struct i2c_driver bh1780_driver = { - .probe = bh1780_probe, - .remove = bh1780_remove, - .id_table = bh1780_id, - .driver = { - .name = "bh1780", - .pm = &bh1780_pm, - .of_match_table = of_match_ptr(of_bh1780_match), - }, -}; - -module_i2c_driver(bh1780_driver); - -MODULE_DESCRIPTION("BH1780GLI Ambient Light Sensor Driver"); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Hemanth V "); -- cgit v0.10.2 From f5a49057c71433e35a4712ab8d8f00641b3e1ec0 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 9 Aug 2016 16:24:43 +0800 Subject: ARM: imx6: add missing BM_CLPCR_BYP_MMDC_CH0_LPM_HS setting for imx6ul There is a missing BM_CLPCR_BYP_MMDC_CH0_LPM_HS setting for imx6ul, without it, the "standby" mode can't work well, the system can't be resumed. With this commit, the "standby" mode works well. Signed-off-by: Peter Chen Cc: Anson Huang Cc: Fixes: ee4a5f838c84 ("ARM: imx: add suspend/resume support for i.mx6ul") Signed-off-by: Shawn Guo diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index 58924b3..67bab74 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -295,7 +295,7 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode) val &= ~BM_CLPCR_SBYOS; if (cpu_is_imx6sl()) val |= BM_CLPCR_BYPASS_PMIC_READY; - if (cpu_is_imx6sl() || cpu_is_imx6sx()) + if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6ul()) val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS; else val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS; -- cgit v0.10.2 From bb9947c3a14e781eb0f137728e7e55ec8d848991 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Thu, 14 Jul 2016 11:06:11 +0000 Subject: iio: pressure: bmp280: fix wrong pointer passed to PTR_ERR() PTR_ERR should access the value just tested by IS_ERR, otherwise the wrong error code will be returned. Signed-off-by: Wei Yongjun Reviewed-by: Linus Walleij Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index 6943688..94e27b2 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -970,7 +970,7 @@ int bmp280_common_probe(struct device *dev, data->vdda = devm_regulator_get(dev, "vdda"); if (IS_ERR(data->vdda)) { dev_err(dev, "failed to get VDDA regulator\n"); - ret = PTR_ERR(data->vddd); + ret = PTR_ERR(data->vdda); goto out_disable_vddd; } ret = regulator_enable(data->vdda); -- cgit v0.10.2 From 776b645315d372e06e46167194605d308aa1a790 Mon Sep 17 00:00:00 2001 From: Phil Turnbull Date: Thu, 21 Jul 2016 11:23:13 -0400 Subject: staging: iio: ad5933: Return correct value for AD5933_OUT_RANGE. The 'break' statement after calling ad5933_cmd only breaks out of the 'for' loop, which then unconditionally sets the return value to -EINVAL. Move the initialisation of 'ret' so we return the correct value. Signed-off-by: Phil Turnbull Signed-off-by: Jonathan Cameron diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 170ac98..24c348d 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -419,6 +419,7 @@ static ssize_t ad5933_store(struct device *dev, mutex_lock(&indio_dev->mlock); switch ((u32)this_attr->address) { case AD5933_OUT_RANGE: + ret = -EINVAL; for (i = 0; i < 4; i++) if (val == st->range_avail[i]) { st->ctrl_hb &= ~AD5933_CTRL_RANGE(0x3); @@ -426,7 +427,6 @@ static ssize_t ad5933_store(struct device *dev, ret = ad5933_cmd(st, 0); break; } - ret = -EINVAL; break; case AD5933_IN_PGA_GAIN: if (sysfs_streq(buf, "1")) { -- cgit v0.10.2 From b2f0c09664b72b2f8c581383a9337ac3092e42c8 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 11 Jul 2016 13:50:01 +0200 Subject: iio: sw-trigger: Fix config group initialization Use the IS_ENABLED() helper macro to ensure that the configfs group is initialized either when configfs is built-in or when configfs is built as a module. Otherwise software trigger creation will result in undefined behaviour when configfs is built as a mdoule since the configfs group for the trigger is not properly initialized. Fixes: b662f809d410 ("iio: core: Introduce IIO software triggers") Signed-off-by: Lars-Peter Clausen Acked-by: Daniel Baluta Cc: Signed-off-by: Jonathan Cameron diff --git a/include/linux/iio/sw_trigger.h b/include/linux/iio/sw_trigger.h index 5198f8e..c97eab6 100644 --- a/include/linux/iio/sw_trigger.h +++ b/include/linux/iio/sw_trigger.h @@ -62,7 +62,7 @@ void iio_swt_group_init_type_name(struct iio_sw_trigger *t, const char *name, struct config_item_type *type) { -#ifdef CONFIG_CONFIGFS_FS +#if IS_ENABLED(CONFIG_CONFIGFS_FS) config_group_init_type_name(&t->group, name, type); #endif } -- cgit v0.10.2 From 7d3cc21dab5313a02f2f3ca8164529b828a030d1 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 11 Jul 2016 13:54:17 +0200 Subject: iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999 The data buffer for captured mode for the ad799x driver is allocated in the update_scan_mode() callback. This callback is not set in the iio_info struct for the ad7791/ad7995/ad7999, which means that the data buffer is not allocated when a captured transfer is started. As a result the driver crashes when the first sample is received. To fix this properly set the update_scan_mode() callback. Fixes: d8dca33027c1 ("staging:iio:ad799x: Preallocate sample buffer") Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index b616376..9704090 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -527,6 +527,7 @@ static struct attribute_group ad799x_event_attrs_group = { static const struct iio_info ad7991_info = { .read_raw = &ad799x_read_raw, .driver_module = THIS_MODULE, + .update_scan_mode = ad799x_update_scan_mode, }; static const struct iio_info ad7993_4_7_8_noirq_info = { -- cgit v0.10.2 From b234f683dde97aebb7009c6aecab651d32ad70b4 Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Mon, 11 Jul 2016 08:25:07 -0700 Subject: iio: accel: bma220_spi: set up buffer timestamps for non-zero values Use the iio_pollfunc_store_time parameter during triggered buffer set-up to get valid timestamps. Signed-off-by: Alison Schofield Cc: Daniel Baluta Reviewed-By: Tiberiu Breana Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/accel/bma220_spi.c b/drivers/iio/accel/bma220_spi.c index 1098d10..5099f29 100644 --- a/drivers/iio/accel/bma220_spi.c +++ b/drivers/iio/accel/bma220_spi.c @@ -253,7 +253,7 @@ static int bma220_probe(struct spi_device *spi) if (ret < 0) return ret; - ret = iio_triggered_buffer_setup(indio_dev, NULL, + ret = iio_triggered_buffer_setup(indio_dev, iio_pollfunc_store_time, bma220_trigger_handler, NULL); if (ret < 0) { dev_err(&spi->dev, "iio triggered buffer setup failed\n"); -- cgit v0.10.2 From 3c68858df7c2f0c4c343bb4702733fe827491f9e Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Mon, 11 Jul 2016 08:26:13 -0700 Subject: iio: humidity: am2315: set up buffer timestamps for non-zero values Use the iio_pollfunc_store_time parameter during triggered buffer set-up to get valid timestamps. Signed-off-by: Alison Schofield Cc: Daniel Baluta Reviewed-By: Tiberiu Breana Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/humidity/am2315.c b/drivers/iio/humidity/am2315.c index 3e200f6..ff96b6d 100644 --- a/drivers/iio/humidity/am2315.c +++ b/drivers/iio/humidity/am2315.c @@ -244,7 +244,7 @@ static int am2315_probe(struct i2c_client *client, indio_dev->channels = am2315_channels; indio_dev->num_channels = ARRAY_SIZE(am2315_channels); - ret = iio_triggered_buffer_setup(indio_dev, NULL, + ret = iio_triggered_buffer_setup(indio_dev, iio_pollfunc_store_time, am2315_trigger_handler, NULL); if (ret < 0) { dev_err(&client->dev, "iio triggered buffer setup failed\n"); -- cgit v0.10.2 From f8adf645db03345af2d9a8b6095b02327ea50885 Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Mon, 11 Jul 2016 08:26:56 -0700 Subject: iio: proximity: as3935: set up buffer timestamps for non-zero values Use the iio_pollfunc_store_time parameter during triggered buffer set-up to get valid timestamps. Signed-off-by: Alison Schofield Cc: Daniel Baluta Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index 2e3a70e..5656deb 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -397,7 +397,7 @@ static int as3935_probe(struct spi_device *spi) return ret; } - ret = iio_triggered_buffer_setup(indio_dev, NULL, + ret = iio_triggered_buffer_setup(indio_dev, iio_pollfunc_store_time, &as3935_trigger_handler, NULL); if (ret) { -- cgit v0.10.2 From 45e98152850c36560484f3fa3bb857a4bfe1a419 Mon Sep 17 00:00:00 2001 From: William Breathitt Gray Date: Tue, 19 Jul 2016 12:25:00 -0400 Subject: iio: stx104: Unregister IIO device on remove callback The devm_iio_device_register function should not be used if custom operations must be performed in the remove callback. This patch replaces the dem_iio_device_register call with a iio_device_register call and respective iio_device_unregister call in the remove callback. Fixes: 765550e4d98d ("iio: stx104: Add GPIO support for the Apex Embedded Systems STX104") Signed-off-by: William Breathitt Gray Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/dac/stx104.c b/drivers/iio/dac/stx104.c index 792a971..bebbd00 100644 --- a/drivers/iio/dac/stx104.c +++ b/drivers/iio/dac/stx104.c @@ -65,6 +65,16 @@ struct stx104_gpio { unsigned int out_state; }; +/** + * struct stx104_dev - STX104 device private data structure + * @indio_dev: IIO device + * @chip: instance of the gpio_chip + */ +struct stx104_dev { + struct iio_dev *indio_dev; + struct gpio_chip *chip; +}; + static int stx104_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { @@ -107,6 +117,7 @@ static const struct iio_chan_spec stx104_channels[STX104_NUM_CHAN] = { static int stx104_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) { + /* GPIO 0-3 are input only, while the rest are output only */ if (offset < 4) return 1; @@ -169,6 +180,7 @@ static int stx104_probe(struct device *dev, unsigned int id) struct iio_dev *indio_dev; struct stx104_iio *priv; struct stx104_gpio *stx104gpio; + struct stx104_dev *stx104dev; int err; indio_dev = devm_iio_device_alloc(dev, sizeof(*priv)); @@ -179,6 +191,10 @@ static int stx104_probe(struct device *dev, unsigned int id) if (!stx104gpio) return -ENOMEM; + stx104dev = devm_kzalloc(dev, sizeof(*stx104dev), GFP_KERNEL); + if (!stx104dev) + return -ENOMEM; + if (!devm_request_region(dev, base[id], STX104_EXTENT, dev_name(dev))) { dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n", @@ -199,12 +215,6 @@ static int stx104_probe(struct device *dev, unsigned int id) outw(0, base[id] + 4); outw(0, base[id] + 6); - err = devm_iio_device_register(dev, indio_dev); - if (err) { - dev_err(dev, "IIO device registering failed (%d)\n", err); - return err; - } - stx104gpio->chip.label = dev_name(dev); stx104gpio->chip.parent = dev; stx104gpio->chip.owner = THIS_MODULE; @@ -220,7 +230,9 @@ static int stx104_probe(struct device *dev, unsigned int id) spin_lock_init(&stx104gpio->lock); - dev_set_drvdata(dev, stx104gpio); + stx104dev->indio_dev = indio_dev; + stx104dev->chip = &stx104gpio->chip; + dev_set_drvdata(dev, stx104dev); err = gpiochip_add_data(&stx104gpio->chip, stx104gpio); if (err) { @@ -228,14 +240,22 @@ static int stx104_probe(struct device *dev, unsigned int id) return err; } + err = iio_device_register(indio_dev); + if (err) { + dev_err(dev, "IIO device registering failed (%d)\n", err); + gpiochip_remove(&stx104gpio->chip); + return err; + } + return 0; } static int stx104_remove(struct device *dev, unsigned int id) { - struct stx104_gpio *const stx104gpio = dev_get_drvdata(dev); + struct stx104_dev *const stx104dev = dev_get_drvdata(dev); - gpiochip_remove(&stx104gpio->chip); + iio_device_unregister(stx104dev->indio_dev); + gpiochip_remove(stx104dev->chip); return 0; } -- cgit v0.10.2 From 193e2d4fd91c5e5d563395f9577621dac4f4df31 Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Mon, 18 Jul 2016 17:56:43 -0700 Subject: iio: add Kconfig selects needed for triggered buffer compiles Select IIO_BUFFER and IIO_TRIGGERED_BUFFER to compile. Remove IIO_TRIGGER if present since IIO_BUFFER selects it. Signed-off-by: Alison Schofield Cc: Daniel Baluta Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index 89d7820..78f148e 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -20,6 +20,8 @@ config BMA180 config BMA220 tristate "Bosch BMA220 3-Axis Accelerometer Driver" depends on SPI + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help Say yes here to add support for the Bosch BMA220 triaxial acceleration sensor. @@ -234,7 +236,8 @@ config STK8312 config STK8BA50 tristate "Sensortek STK8BA50 3-Axis Accelerometer Driver" depends on I2C - depends on IIO_TRIGGER + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help Say yes here to get support for the Sensortek STK8BA50 3-axis accelerometer. diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig index 738a86d..d041243 100644 --- a/drivers/iio/humidity/Kconfig +++ b/drivers/iio/humidity/Kconfig @@ -6,6 +6,8 @@ menu "Humidity sensors" config AM2315 tristate "Aosong AM2315 relative humidity and temperature sensor" depends on I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help If you say yes here you get support for the Aosong AM2315 relative humidity and ambient temperature sensor. diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 7c566f5..12ceb11 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -238,6 +238,8 @@ config MAX44000 tristate "MAX44000 Ambient and Infrared Proximity Sensor" depends on I2C select REGMAP_I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help Say Y here if you want to build support for Maxim Integrated's MAX44000 ambient and infrared proximity sensor device. -- cgit v0.10.2 From 31f453eac56bdc41f434126bc2d5933b9fb720ec Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 27 Jul 2016 22:32:58 +0200 Subject: iio: pressure: bmp280: fix runtime suspend/resume crash In commit 3d838118c6aa ("iio: pressure: bmp280: add power management") For some reason the code in the runtime suspend/resume hooks got wrong (I suspect in the ambition to cut down boilerplate) and it seems it was tested without CONFIG_PM and crashes like so for me: Unable to handle kernel NULL pointer dereference at virtual address 0000000c pgd = c0204000 [0000000c] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 89 Comm: kworker/1:2 Not tainted 4.7.0-03348-g90dc3680458a-dirty #99 Hardware name: Generic DT based system Workqueue: pm pm_runtime_work task: df3c6300 ti: dec8a000 task.ti: dec8a000 PC is at regulator_disable+0x0/0x6c LR is at bmp280_runtime_suspend+0x3c/0xa4 Dereferencing the BMP280 state container properly fixes the problem, sorry for screwing up. Fixes: 3d838118c6aa ("iio: pressure: bmp280: add power management") Signed-off-by: Linus Walleij Tested-by: Jarkko Nikula Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index 94e27b2..e5a533c 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -1079,7 +1079,8 @@ EXPORT_SYMBOL(bmp280_common_remove); #ifdef CONFIG_PM static int bmp280_runtime_suspend(struct device *dev) { - struct bmp280_data *data = dev_get_drvdata(dev); + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct bmp280_data *data = iio_priv(indio_dev); int ret; ret = regulator_disable(data->vdda); @@ -1090,7 +1091,8 @@ static int bmp280_runtime_suspend(struct device *dev) static int bmp280_runtime_resume(struct device *dev) { - struct bmp280_data *data = dev_get_drvdata(dev); + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct bmp280_data *data = iio_priv(indio_dev); int ret; ret = regulator_enable(data->vddd); -- cgit v0.10.2 From 7b142d8fd0bd4c9bf06ccb72ac4daedb503f0124 Mon Sep 17 00:00:00 2001 From: Jann Horn Date: Thu, 16 Jun 2016 00:45:33 +0200 Subject: android: binder: fix dangling pointer comparison If /dev/binder is opened and the opener process then e.g. calls execve, proc->vma_vm_mm will still point to the location of the now-freed mm_struct. If the process then calls ioctl(binder_fd, ...), the dangling proc->vma_vm_mm pointer will be compared to current->mm. Let the binder take a reference to the mm_struct to avoid this. v2: use the right refcounter Fixes: a906d6931f3c ("android: binder: Sanity check at binder ioctl") Signed-off-by: Jann Horn Reviewed-by: Chen Feng Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 16288e7..09fdb42 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -2962,6 +2962,7 @@ static int binder_open(struct inode *nodp, struct file *filp) return -ENOMEM; get_task_struct(current); proc->tsk = current; + atomic_inc(¤t->mm->mm_count); proc->vma_vm_mm = current->mm; INIT_LIST_HEAD(&proc->todo); init_waitqueue_head(&proc->wait); @@ -3167,6 +3168,7 @@ static void binder_deferred_release(struct binder_proc *proc) vfree(proc->buffer); } + mmdrop(proc->vma_vm_mm); put_task_struct(proc->tsk); binder_debug(BINDER_DEBUG_OPEN_CLOSE, -- cgit v0.10.2 From f6b6a28e2dbc401416ff12f775d75281c9b41918 Mon Sep 17 00:00:00 2001 From: Gabriel Krisman Bertazi Date: Fri, 29 Jul 2016 16:15:18 -0300 Subject: nvme: Prevent controller state invalid transition Acquiring the nvme_ctrl lock before reading ctrl->state in nvme_change_ctrl_state() should prevent a theoretical invalid state transition, in the event of two threads racing inside that function. I haven't been able to observe this happening with the current code, and the current state machine seems to be simple enough to not be affected by these invalid transitions, but future modifications could make it more likely to happen. Signed-off-by: Gabriel Krisman Bertazi Reviewed-by: Sagi Grimberg Reviewed-by: Steve Wise Signed-off-by: Jens Axboe diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 7ff2e82..7f75d66 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -81,10 +81,12 @@ EXPORT_SYMBOL_GPL(nvme_cancel_request); bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, enum nvme_ctrl_state new_state) { - enum nvme_ctrl_state old_state = ctrl->state; + enum nvme_ctrl_state old_state; bool changed = false; spin_lock_irq(&ctrl->lock); + + old_state = ctrl->state; switch (new_state) { case NVME_CTRL_LIVE: switch (old_state) { @@ -140,11 +142,12 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, default: break; } - spin_unlock_irq(&ctrl->lock); if (changed) ctrl->state = new_state; + spin_unlock_irq(&ctrl->lock); + return changed; } EXPORT_SYMBOL_GPL(nvme_change_ctrl_state); -- cgit v0.10.2 From 0d9dcf852334b796bacc7020364afba3122db81e Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Mon, 8 Aug 2016 11:14:36 -0700 Subject: iio: humidity: hdc100x: fix sensor data reads of temp and humidity Replace the i2c_smbus_read_byte commmands used to retrieve the sensor data with an i2c_master_recv command. The smbus read byte method fails because the device does not expect a stop condition after sending the first byte. When we issue the second read, we are getting the first byte again. Net effect is that of the 14 bits used for the measurement, the 8 most significant bits are correct, the lower 6 are not. None of the smbus read protocols follow the pattern this device requires (S Addr Rd [A] Data [A] Data NA P), hence the switch to an i2c receive transaction. Applicable from original introduction of this driver, but will require backporting due to churn in the code. Signed-off-by: Alison Schofield Cc: Daniel Baluta Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c index a03832a..e0c9c70 100644 --- a/drivers/iio/humidity/hdc100x.c +++ b/drivers/iio/humidity/hdc100x.c @@ -142,7 +142,7 @@ static int hdc100x_get_measurement(struct hdc100x_data *data, struct i2c_client *client = data->client; int delay = data->adc_int_us[chan->address]; int ret; - int val; + __be16 val; /* start measurement */ ret = i2c_smbus_write_byte(client, chan->address); @@ -154,26 +154,13 @@ static int hdc100x_get_measurement(struct hdc100x_data *data, /* wait for integration time to pass */ usleep_range(delay, delay + 1000); - /* - * i2c_smbus_read_word_data cannot() be used here due to the command - * value not being understood and causes NAKs preventing any reading - * from being accessed. - */ - ret = i2c_smbus_read_byte(client); + /* read measurement */ + ret = i2c_master_recv(data->client, (char *)&val, sizeof(val)); if (ret < 0) { - dev_err(&client->dev, "cannot read high byte measurement"); + dev_err(&client->dev, "cannot read sensor data\n"); return ret; } - val = ret << 8; - - ret = i2c_smbus_read_byte(client); - if (ret < 0) { - dev_err(&client->dev, "cannot read low byte measurement"); - return ret; - } - val |= ret; - - return val; + return be16_to_cpu(val); } static int hdc100x_get_heater_status(struct hdc100x_data *data) @@ -272,8 +259,8 @@ static int hdc100x_probe(struct i2c_client *client, struct iio_dev *indio_dev; struct hdc100x_data *data; - if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BYTE)) + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA | + I2C_FUNC_SMBUS_BYTE | I2C_FUNC_I2C)) return -EOPNOTSUPP; indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); -- cgit v0.10.2 From ddbc719f99cf9aed6918cef98cb3475fd4fc4fa6 Mon Sep 17 00:00:00 2001 From: Alison Schofield Date: Tue, 26 Jul 2016 20:17:43 -0700 Subject: tools: iio: iio_generic_buffer: initialize channel array pointer Uninitialized channel pointer causes segmentation fault when we call free(channel) during cleanup() with no channels initialized. This happens when you exit early for usage errors. Initialize the pointer to NULL when it is declared. Signed-off-by: Alison Schofield Cc: Daniel Baluta Tested-by: Gregor Boirie Signed-off-by: Jonathan Cameron diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c index 0e8a1f7..ae68bf0 100644 --- a/tools/iio/iio_generic_buffer.c +++ b/tools/iio/iio_generic_buffer.c @@ -348,7 +348,7 @@ int main(int argc, char **argv) int notrigger = 0; char *dummy; - struct iio_channel_info *channels; + struct iio_channel_info *channels = NULL; register_cleanup(); -- cgit v0.10.2 From 42647f947210cb9fd8a7737c0fd2a60002a81188 Mon Sep 17 00:00:00 2001 From: Teresa Remmet Date: Mon, 15 Aug 2016 09:10:39 -0700 Subject: ARM: dts: am335x: Update elm phandle binding The check for the "elm_id" binding had been removed. This causes nand boot to fail on boards still using the old binding. Update the bindings on those boards. Signed-off-by: Teresa Remmet Acked-by: Brian Norris Acked-by: Roger Quadros Signed-off-by: Tony Lindgren diff --git a/arch/arm/boot/dts/am335x-baltos.dtsi b/arch/arm/boot/dts/am335x-baltos.dtsi index c8609d8..b689172 100644 --- a/arch/arm/boot/dts/am335x-baltos.dtsi +++ b/arch/arm/boot/dts/am335x-baltos.dtsi @@ -226,7 +226,7 @@ #address-cells = <1>; #size-cells = <1>; - elm_id = <&elm>; + ti,elm-id = <&elm>; }; }; diff --git a/arch/arm/boot/dts/am335x-igep0033.dtsi b/arch/arm/boot/dts/am335x-igep0033.dtsi index df63484..e7d9ca1 100644 --- a/arch/arm/boot/dts/am335x-igep0033.dtsi +++ b/arch/arm/boot/dts/am335x-igep0033.dtsi @@ -161,7 +161,7 @@ #address-cells = <1>; #size-cells = <1>; - elm_id = <&elm>; + ti,elm-id = <&elm>; /* MTD partition table */ partition@0 { diff --git a/arch/arm/boot/dts/am335x-phycore-som.dtsi b/arch/arm/boot/dts/am335x-phycore-som.dtsi index 86f7731..1263c9d 100644 --- a/arch/arm/boot/dts/am335x-phycore-som.dtsi +++ b/arch/arm/boot/dts/am335x-phycore-som.dtsi @@ -197,7 +197,7 @@ gpmc,wr-access-ns = <30>; gpmc,wr-data-mux-bus-ns = <0>; - elm_id = <&elm>; + ti,elm-id = <&elm>; #address-cells = <1>; #size-cells = <1>; -- cgit v0.10.2 From 5e0568dfbfb8c13cdb69c9fd06d600593ad4b430 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 15 Aug 2016 09:10:45 -0700 Subject: ARM: dts: overo: fix gpmc nand cs0 range The gpmc ranges property for NAND at CS0 has been broken since it was first added. This currently prevents the nand gpmc child node from being probed: omap-gpmc 6e000000.gpmc: /ocp/gpmc@6e000000/nand@0,0 has malformed 'reg' property and consequently the NAND device from being registered. Fixes: 98ce6007efb4 ("ARM: dts: overo: Support PoP NAND") Cc: stable # 4.3 Signed-off-by: Johan Hovold Signed-off-by: Tony Lindgren diff --git a/arch/arm/boot/dts/omap3-overo-base.dtsi b/arch/arm/boot/dts/omap3-overo-base.dtsi index de256fa..b15c435 100644 --- a/arch/arm/boot/dts/omap3-overo-base.dtsi +++ b/arch/arm/boot/dts/omap3-overo-base.dtsi @@ -223,7 +223,7 @@ }; &gpmc { - ranges = <0 0 0x00000000 0x20000000>; + ranges = <0 0 0x30000000 0x1000000>; /* CS0 */ nand@0,0 { compatible = "ti,omap2-nand"; -- cgit v0.10.2 From 153b58ea932b2d0642fa5cd41c93bb0555f3f09b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 15 Aug 2016 09:10:49 -0700 Subject: ARM: dts: overo: fix gpmc nand on boards with ethernet The gpmc ranges property for NAND at CS0 was being overridden by later includes that defined gpmc ethernet nodes, effectively breaking NAND on these systems: omap-gpmc 6e000000.gpmc: /ocp/gpmc@6e000000/nand@0,0 has malformed 'reg' property Instead of redefining the NAND range in every such dtsi, define all currently used ranges in omap3-overo-base.dtsi. Fixes: 98ce6007efb4 ("ARM: dts: overo: Support PoP NAND") Cc: stable # 4.3 Signed-off-by: Johan Hovold Signed-off-by: Tony Lindgren diff --git a/arch/arm/boot/dts/omap3-overo-base.dtsi b/arch/arm/boot/dts/omap3-overo-base.dtsi index b15c435..3e946ca 100644 --- a/arch/arm/boot/dts/omap3-overo-base.dtsi +++ b/arch/arm/boot/dts/omap3-overo-base.dtsi @@ -223,7 +223,9 @@ }; &gpmc { - ranges = <0 0 0x30000000 0x1000000>; /* CS0 */ + ranges = <0 0 0x30000000 0x1000000>, /* CS0 */ + <4 0 0x2b000000 0x1000000>, /* CS4 */ + <5 0 0x2c000000 0x1000000>; /* CS5 */ nand@0,0 { compatible = "ti,omap2-nand"; diff --git a/arch/arm/boot/dts/omap3-overo-chestnut43-common.dtsi b/arch/arm/boot/dts/omap3-overo-chestnut43-common.dtsi index 7df2792..4f4c6ef 100644 --- a/arch/arm/boot/dts/omap3-overo-chestnut43-common.dtsi +++ b/arch/arm/boot/dts/omap3-overo-chestnut43-common.dtsi @@ -55,8 +55,6 @@ #include "omap-gpmc-smsc9221.dtsi" &gpmc { - ranges = <5 0 0x2c000000 0x1000000>; /* CS5 */ - ethernet@gpmc { reg = <5 0 0xff>; interrupt-parent = <&gpio6>; diff --git a/arch/arm/boot/dts/omap3-overo-tobi-common.dtsi b/arch/arm/boot/dts/omap3-overo-tobi-common.dtsi index 9e24b6a..1b304e2 100644 --- a/arch/arm/boot/dts/omap3-overo-tobi-common.dtsi +++ b/arch/arm/boot/dts/omap3-overo-tobi-common.dtsi @@ -27,8 +27,6 @@ #include "omap-gpmc-smsc9221.dtsi" &gpmc { - ranges = <5 0 0x2c000000 0x1000000>; /* CS5 */ - ethernet@gpmc { reg = <5 0 0xff>; interrupt-parent = <&gpio6>; diff --git a/arch/arm/boot/dts/omap3-overo-tobiduo-common.dtsi b/arch/arm/boot/dts/omap3-overo-tobiduo-common.dtsi index 334109e..82e98ee 100644 --- a/arch/arm/boot/dts/omap3-overo-tobiduo-common.dtsi +++ b/arch/arm/boot/dts/omap3-overo-tobiduo-common.dtsi @@ -15,9 +15,6 @@ #include "omap-gpmc-smsc9221.dtsi" &gpmc { - ranges = <4 0 0x2b000000 0x1000000>, /* CS4 */ - <5 0 0x2c000000 0x1000000>; /* CS5 */ - smsc1: ethernet@gpmc { reg = <5 0 0xff>; interrupt-parent = <&gpio6>; -- cgit v0.10.2 From a8771a6a64226c24f4baf30b8d13a2116795487f Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Sat, 13 Aug 2016 10:13:04 -0500 Subject: ARM: dts: logicpd-torpedo-som: Provide NAND ready pin This was applied to a variety of omap3 boards, so it should probably be applied here. I did not test NAND performance, but I tested this with UBI to confirm read/write didn't break. Signed-off-by: Adam Ford Signed-off-by: Tony Lindgren diff --git a/arch/arm/boot/dts/logicpd-torpedo-som.dtsi b/arch/arm/boot/dts/logicpd-torpedo-som.dtsi index 5e9a13c..1c2c746 100644 --- a/arch/arm/boot/dts/logicpd-torpedo-som.dtsi +++ b/arch/arm/boot/dts/logicpd-torpedo-som.dtsi @@ -46,6 +46,7 @@ linux,mtd-name = "micron,mt29f4g16abbda3w"; nand-bus-width = <16>; ti,nand-ecc-opt = "bch8"; + rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */ gpmc,sync-clk-ps = <0>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <44>; -- cgit v0.10.2 From 4875b8fcf68d8133713dd5c5df5bc79431be8be7 Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Sat, 13 Aug 2016 10:21:00 -0500 Subject: ARM: dts: logicpd-somlv: Fix NAND device nodes This fix was applied to a bunch of omap3 devices including LogicPD Torpedo, but this got missed since it was new around the same times the patches were applied. This makes the GPMC parameters match the Torpedo since they have the same processor PoP memory. Signed-off-by: Adam Ford Signed-off-by: Tony Lindgren diff --git a/arch/arm/boot/dts/logicpd-som-lv.dtsi b/arch/arm/boot/dts/logicpd-som-lv.dtsi index 365f39f..0ff1c2d 100644 --- a/arch/arm/boot/dts/logicpd-som-lv.dtsi +++ b/arch/arm/boot/dts/logicpd-som-lv.dtsi @@ -35,10 +35,15 @@ ranges = <0 0 0x00000000 0x1000000>; /* CS0: 16MB for NAND */ nand@0,0 { - linux,mtd-name = "micron,mt29f4g16abbda3w"; + compatible = "ti,omap2-nand"; reg = <0 0 4>; /* CS0, offset 0, IO size 4 */ + interrupt-parent = <&gpmc>; + interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */ + <1 IRQ_TYPE_NONE>; /* termcount */ + linux,mtd-name = "micron,mt29f4g16abbda3w"; nand-bus-width = <16>; ti,nand-ecc-opt = "bch8"; + rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */ gpmc,sync-clk-ps = <0>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <44>; @@ -54,10 +59,6 @@ gpmc,wr-access-ns = <40>; gpmc,wr-data-mux-bus-ns = <0>; gpmc,device-width = <2>; - - gpmc,page-burst-access-ns = <5>; - gpmc,cycle2cycle-delay-ns = <50>; - #address-cells = <1>; #size-cells = <1>; -- cgit v0.10.2 From c2ab447454d498e709d9011c0f2d2945ee321f9b Mon Sep 17 00:00:00 2001 From: Anders Darander Date: Mon, 8 Aug 2016 14:42:16 +0200 Subject: iio: adc: at91: unbreak channel adc channel 3 The driver always assumes that an input device has been created when reading channel 3. This causes a kernel panic when dereferencing st->ts_input. The change was introduced in commit 84882b060301 ("iio: adc: at91_adc: Add support for touchscreens without TSMR"). Earlier versions only entered that part of the if-else statement if only the following flags are set: AT91_ADC_IER_XRDY | AT91_ADC_IER_YRDY | AT91_ADC_IER_PRDY Signed-off-by: Anders Darander Acked-by: Alexandre Belloni Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index 52430ba..0438c68 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -381,8 +381,8 @@ static irqreturn_t at91_adc_rl_interrupt(int irq, void *private) st->ts_bufferedmeasure = false; input_report_key(st->ts_input, BTN_TOUCH, 0); input_sync(st->ts_input); - } else if (status & AT91_ADC_EOC(3)) { - /* Conversion finished */ + } else if (status & AT91_ADC_EOC(3) && st->ts_input) { + /* Conversion finished and we've a touchscreen */ if (st->ts_bufferedmeasure) { /* * Last measurement is always discarded, since it can -- cgit v0.10.2 From 99f1c013194e64d4b67d5d318148303b0e1585e1 Mon Sep 17 00:00:00 2001 From: Oleg Drokin Date: Thu, 14 Jul 2016 23:40:21 -0400 Subject: staging/lustre/llite: Close atomic_open race with several openers Right now, if it's an open of a negative dentry, a race is possible with several openers who all try to instantiate/rehash the same dentry and would hit a BUG_ON in d_add. But in fact if we got a negative dentry in atomic_open, that means we just revalidated it so no point in talking to MDS at all, just return ENOENT and make the race go away completely. Signed-off-by: Oleg Drokin Cc: stable # 4.7+ Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c index 3664bfd..2c4dc69 100644 --- a/drivers/staging/lustre/lustre/llite/namei.c +++ b/drivers/staging/lustre/lustre/llite/namei.c @@ -388,6 +388,7 @@ static int ll_lookup_it_finish(struct ptlrpc_request *request, struct inode *inode = NULL; __u64 bits = 0; int rc = 0; + struct dentry *alias; /* NB 1 request reference will be taken away by ll_intent_lock() * when I return @@ -412,26 +413,12 @@ static int ll_lookup_it_finish(struct ptlrpc_request *request, */ } - /* Only hash *de if it is unhashed (new dentry). - * Atoimc_open may passing hashed dentries for open. - */ - if (d_unhashed(*de)) { - struct dentry *alias; - - alias = ll_splice_alias(inode, *de); - if (IS_ERR(alias)) { - rc = PTR_ERR(alias); - goto out; - } - *de = alias; - } else if (!it_disposition(it, DISP_LOOKUP_NEG) && - !it_disposition(it, DISP_OPEN_CREATE)) { - /* With DISP_OPEN_CREATE dentry will be - * instantiated in ll_create_it. - */ - LASSERT(!d_inode(*de)); - d_instantiate(*de, inode); + alias = ll_splice_alias(inode, *de); + if (IS_ERR(alias)) { + rc = PTR_ERR(alias); + goto out; } + *de = alias; if (!it_disposition(it, DISP_LOOKUP_NEG)) { /* we have lookup look - unhide dentry */ @@ -587,6 +574,24 @@ static int ll_atomic_open(struct inode *dir, struct dentry *dentry, dentry, PFID(ll_inode2fid(dir)), dir, file, open_flags, mode, *opened); + /* Only negative dentries enter here */ + LASSERT(!d_inode(dentry)); + + if (!d_in_lookup(dentry)) { + /* A valid negative dentry that just passed revalidation, + * there's little point to try and open it server-side, + * even though there's a minuscle chance it might succeed. + * Either way it's a valid race to just return -ENOENT here. + */ + if (!(open_flags & O_CREAT)) + return -ENOENT; + + /* Otherwise we just unhash it to be rehashed afresh via + * lookup if necessary + */ + d_drop(dentry); + } + it = kzalloc(sizeof(*it), GFP_NOFS); if (!it) return -ENOMEM; -- cgit v0.10.2 From d9ae449b3d14d7c55f69af329972f175d180e68d Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Wed, 3 Aug 2016 18:03:44 +0200 Subject: KVM: arm64: vgic-its: Make updates to propbaser/pendbaser atomic There are two problems with the current implementation of the MMIO handlers for the propbaser and pendbaser: First, the write to the value itself is not guaranteed to be an atomic 64-bit write so two concurrent writes to the structure field could be intermixed. Second, because we do a read-modify-update operation without any synchronization, if we have two 32-bit accesses to separate parts of the register, we can loose one of them. By using the atomic cmpxchg64 we should cover both issues above. Reviewed-by: Andre Przywara Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c index ff668e0..90d8181 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v3.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c @@ -306,16 +306,19 @@ static void vgic_mmio_write_propbase(struct kvm_vcpu *vcpu, { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu; - u64 propbaser = dist->propbaser; + u64 old_propbaser, propbaser; /* Storing a value with LPIs already enabled is undefined */ if (vgic_cpu->lpis_enabled) return; - propbaser = update_64bit_reg(propbaser, addr & 4, len, val); - propbaser = vgic_sanitise_propbaser(propbaser); - - dist->propbaser = propbaser; + do { + old_propbaser = dist->propbaser; + propbaser = old_propbaser; + propbaser = update_64bit_reg(propbaser, addr & 4, len, val); + propbaser = vgic_sanitise_propbaser(propbaser); + } while (cmpxchg64(&dist->propbaser, old_propbaser, + propbaser) != old_propbaser); } static unsigned long vgic_mmio_read_pendbase(struct kvm_vcpu *vcpu, @@ -331,16 +334,19 @@ static void vgic_mmio_write_pendbase(struct kvm_vcpu *vcpu, unsigned long val) { struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu; - u64 pendbaser = vgic_cpu->pendbaser; + u64 old_pendbaser, pendbaser; /* Storing a value with LPIs already enabled is undefined */ if (vgic_cpu->lpis_enabled) return; - pendbaser = update_64bit_reg(pendbaser, addr & 4, len, val); - pendbaser = vgic_sanitise_pendbaser(pendbaser); - - vgic_cpu->pendbaser = pendbaser; + do { + old_pendbaser = vgic_cpu->pendbaser; + pendbaser = old_pendbaser; + pendbaser = update_64bit_reg(pendbaser, addr & 4, len, val); + pendbaser = vgic_sanitise_pendbaser(pendbaser); + } while (cmpxchg64(&vgic_cpu->pendbaser, old_pendbaser, + pendbaser) != old_pendbaser); } /* -- cgit v0.10.2 From c7735769d5dd79afb07254532fabd9ccbd85b1fa Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Mon, 8 Aug 2016 16:45:43 +0100 Subject: KVM: arm64: ITS: move ITS registration into first VCPU run Currently we register an ITS device upon userland issuing the CTLR_INIT ioctl to mark initialization of the ITS as done. This deviates from the initialization sequence of the existing GIC devices and does not play well with the way QEMU handles things. To be more in line with what we are used to, register the ITS(es) just before the first VCPU is about to run, so in the map_resources() call. This involves iterating through the list of KVM devices and map each ITS that we find. Signed-off-by: Andre Przywara Reviewed-by: Eric Auger Tested-by: Eric Auger Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index d06330a..1cf9f59 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -1319,13 +1319,13 @@ void vgic_enable_lpis(struct kvm_vcpu *vcpu) its_sync_lpi_pending_table(vcpu); } -static int vgic_its_init_its(struct kvm *kvm, struct vgic_its *its) +static int vgic_register_its_iodev(struct kvm *kvm, struct vgic_its *its) { struct vgic_io_device *iodev = &its->iodev; int ret; - if (its->initialized) - return 0; + if (!its->initialized) + return -EBUSY; if (IS_VGIC_ADDR_UNDEF(its->vgic_its_base)) return -ENXIO; @@ -1342,9 +1342,6 @@ static int vgic_its_init_its(struct kvm *kvm, struct vgic_its *its) KVM_VGIC_V3_ITS_SIZE, &iodev->dev); mutex_unlock(&kvm->slots_lock); - if (!ret) - its->initialized = true; - return ret; } @@ -1466,9 +1463,6 @@ static int vgic_its_set_attr(struct kvm_device *dev, if (type != KVM_VGIC_ITS_ADDR_TYPE) return -ENODEV; - if (its->initialized) - return -EBUSY; - if (copy_from_user(&addr, uaddr, sizeof(addr))) return -EFAULT; @@ -1484,7 +1478,9 @@ static int vgic_its_set_attr(struct kvm_device *dev, case KVM_DEV_ARM_VGIC_GRP_CTRL: switch (attr->attr) { case KVM_DEV_ARM_VGIC_CTRL_INIT: - return vgic_its_init_its(dev->kvm, its); + its->initialized = true; + + return 0; } break; } @@ -1529,3 +1525,30 @@ int kvm_vgic_register_its_device(void) return kvm_register_device_ops(&kvm_arm_vgic_its_ops, KVM_DEV_TYPE_ARM_VGIC_ITS); } + +/* + * Registers all ITSes with the kvm_io_bus framework. + * To follow the existing VGIC initialization sequence, this has to be + * done as late as possible, just before the first VCPU runs. + */ +int vgic_register_its_iodevs(struct kvm *kvm) +{ + struct kvm_device *dev; + int ret = 0; + + list_for_each_entry(dev, &kvm->devices, vm_node) { + if (dev->ops != &kvm_arm_vgic_its_ops) + continue; + + ret = vgic_register_its_iodev(kvm, dev->private); + if (ret) + return ret; + /* + * We don't need to care about tearing down previously + * registered ITSes, as the kvm_io_bus framework removes + * them for us if the VM gets destroyed. + */ + } + + return ret; +} diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c index 0506543..9f0dae3 100644 --- a/virt/kvm/arm/vgic/vgic-v3.c +++ b/virt/kvm/arm/vgic/vgic-v3.c @@ -289,6 +289,14 @@ int vgic_v3_map_resources(struct kvm *kvm) goto out; } + if (vgic_has_its(kvm)) { + ret = vgic_register_its_iodevs(kvm); + if (ret) { + kvm_err("Unable to register VGIC ITS MMIO regions\n"); + goto out; + } + } + dist->ready = true; out: diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h index 1d8e21d..6c4625c 100644 --- a/virt/kvm/arm/vgic/vgic.h +++ b/virt/kvm/arm/vgic/vgic.h @@ -84,6 +84,7 @@ void vgic_v3_enable(struct kvm_vcpu *vcpu); int vgic_v3_probe(const struct gic_kvm_info *info); int vgic_v3_map_resources(struct kvm *kvm); int vgic_register_redist_iodevs(struct kvm *kvm, gpa_t dist_base_address); +int vgic_register_its_iodevs(struct kvm *kvm); bool vgic_has_its(struct kvm *kvm); int kvm_vgic_register_its_device(void); void vgic_enable_lpis(struct kvm_vcpu *vcpu); @@ -140,6 +141,11 @@ static inline int vgic_register_redist_iodevs(struct kvm *kvm, return -ENODEV; } +static inline int vgic_register_its_iodevs(struct kvm *kvm) +{ + return -ENODEV; +} + static inline bool vgic_has_its(struct kvm *kvm) { return false; -- cgit v0.10.2 From 505a19eec49ab36b314a05bc062749ebdfb0aa90 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Tue, 9 Aug 2016 10:54:29 +0100 Subject: KVM: arm64: check for ITS device on MSI injection When userspace provides the doorbell address for an MSI to be injected into the guest, we find a KVM device which feels responsible. Lets check that this device is really an emulated ITS before we make real use of the container_of-ed pointer. [ Moved NULL-pointer check to caller of static function - Christoffer ] Signed-off-by: Andre Przywara Reviewed-by: Christoffer Dall Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 1cf9f59..9533080 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -471,6 +471,21 @@ static int vgic_its_trigger_msi(struct kvm *kvm, struct vgic_its *its, return 0; } +static struct vgic_io_device *vgic_get_its_iodev(struct kvm_io_device *dev) +{ + struct vgic_io_device *iodev; + + if (dev->ops != &kvm_io_gic_ops) + return NULL; + + iodev = container_of(dev, struct vgic_io_device, dev); + + if (iodev->iodev_type != IODEV_ITS) + return NULL; + + return iodev; +} + /* * Queries the KVM IO bus framework to get the ITS pointer from the given * doorbell address. @@ -494,9 +509,11 @@ int vgic_its_inject_msi(struct kvm *kvm, struct kvm_msi *msi) kvm_io_dev = kvm_io_bus_get_dev(kvm, KVM_MMIO_BUS, address); if (!kvm_io_dev) - return -ENODEV; + return -EINVAL; - iodev = container_of(kvm_io_dev, struct vgic_io_device, dev); + iodev = vgic_get_its_iodev(kvm_io_dev); + if (!iodev) + return -EINVAL; mutex_lock(&iodev->its->its_lock); ret = vgic_its_trigger_msi(kvm, iodev->its, msi->devid, msi->data); -- cgit v0.10.2 From a87eeb900dbb9f8202f96604d56e47e67c936b9d Mon Sep 17 00:00:00 2001 From: Tyrel Datwyler Date: Fri, 12 Aug 2016 17:20:07 -0500 Subject: scsi: fix upper bounds check of sense key in scsi_sense_key_string() Commit 655ee63cf371 ("scsi constants: command, sense key + additional sense string") added a "Completed" sense string with key 0xF to snstext[], but failed to updated the upper bounds check of the sense key in scsi_sense_key_string(). Fixes: 655ee63cf371 ("[SCSI] scsi constants: command, sense key + additional sense strings") Cc: # v3.12+ Signed-off-by: Tyrel Datwyler Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c index 83458f7..6dc96c8 100644 --- a/drivers/scsi/constants.c +++ b/drivers/scsi/constants.c @@ -361,8 +361,9 @@ static const char * const snstext[] = { /* Get sense key string or NULL if not available */ const char * -scsi_sense_key_string(unsigned char key) { - if (key <= 0xE) +scsi_sense_key_string(unsigned char key) +{ + if (key < ARRAY_SIZE(snstext)) return snstext[key]; return NULL; } -- cgit v0.10.2 From c6b269ba51be70fd11852bcad2e163c734e8e92a Mon Sep 17 00:00:00 2001 From: Xose Vazquez Perez Date: Sat, 13 Aug 2016 00:56:03 +0200 Subject: scsi: blacklist all RDAC devices for BLIST_NO_ULD_ATTACH "Universal Xport" LUN is used for in-band storage array management. Cc: Sean Stewart Cc: Christophe Varoqui Cc: James E.J. Bottomley Cc: Martin K. Petersen Cc: SCSI ML Cc: device-mapper development Signed-off-by: Xose Vazquez Perez Acked-by: Sean Stewart Signed-off-by: Martin K. Petersen diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index eaccd65..2464569 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -246,6 +246,10 @@ static struct { {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ -- cgit v0.10.2 From 83cf8df2d4fa48a80b384fea4b09b12180a2442e Mon Sep 17 00:00:00 2001 From: Valentin Rothberg Date: Tue, 16 Aug 2016 08:27:53 +0200 Subject: drivers/iio/light/Kconfig: SENSORS_BH1780 cleanup Commit 7ef9153d9af5 ("misc: delete bh1780 driver") has removed the Kconfig option SENSORS_BH1780. Remove the last reference on this option. Signed-off-by: Valentin Rothberg Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 7c566f5..69904d5 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -76,7 +76,6 @@ config BH1750 config BH1780 tristate "ROHM BH1780 ambient light sensor" depends on I2C - depends on !SENSORS_BH1780 help Say Y here to build support for the ROHM BH1780GLI ambient light sensor. -- cgit v0.10.2 From d3e2773c4ede5c62d2a92dae20e3a09b1ca55b6e Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 15 Aug 2016 10:36:22 -0700 Subject: builddeb: Skip gcc-plugins when not configured When attempting to build a Debian kernel package, the "scripts/gcc-plugins" directory does not exist in the output tree unless CONFIG_GCC_PLUGINS=y. To avoid errors when not defined, this wraps the failing "find" in a config test. Reported-by: Frank Paulsen Tested-by: Christian Kujau Signed-off-by: Kees Cook Signed-off-by: Michal Marek diff --git a/scripts/package/builddeb b/scripts/package/builddeb index e1c09e2..8ea9fd2 100755 --- a/scripts/package/builddeb +++ b/scripts/package/builddeb @@ -332,7 +332,9 @@ if grep -q '^CONFIG_STACK_VALIDATION=y' $KCONFIG_CONFIG ; then (cd $objtree; find tools/objtool -type f -executable) >> "$objtree/debian/hdrobjfiles" fi (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles" -(cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles" +if grep -q '^CONFIG_GCC_PLUGINS=y' $KCONFIG_CONFIG ; then + (cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles" +fi destdir=$kernel_headers_dir/usr/src/linux-headers-$version mkdir -p "$destdir" (cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -) -- cgit v0.10.2 From 39bbee4e549fbc358b2ef9137c4bf459abd164fb Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 16 Aug 2016 09:24:39 +0100 Subject: nvme-rdma: initialize ret to zero to avoid returning garbage ret is not initialized so it contains garbage. Ensure garbage is not returned by initializing rc to 0. Signed-off-by: Colin Ian King Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 8d2875b..9c69393 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -1319,7 +1319,7 @@ out_destroy_queue_ib: static int nvme_rdma_device_unplug(struct nvme_rdma_queue *queue) { struct nvme_rdma_ctrl *ctrl = queue->ctrl; - int ret; + int ret = 0; /* Own the controller deletion */ if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING)) -- cgit v0.10.2 From 172b1d6b5a9337eb8c1ec294b80e448e03a9ac17 Mon Sep 17 00:00:00 2001 From: Xiaodong Liu Date: Fri, 12 Aug 2016 06:24:42 -0400 Subject: crypto: sha256-mb - fix ctx pointer and digest copy 1. fix ctx pointer Use req_ctx which is the ctx for the next job that have been completed in the lanes instead of the first completed job rctx, whose completion could have been called and released. 2. fix digest copy Use XMM register to copy another 16 bytes sha256 digest instead of a regular register. Signed-off-by: Xiaodong Liu Signed-off-by: Herbert Xu diff --git a/arch/x86/crypto/sha256-mb/sha256_mb.c b/arch/x86/crypto/sha256-mb/sha256_mb.c index 89fa85e..6f97fb3 100644 --- a/arch/x86/crypto/sha256-mb/sha256_mb.c +++ b/arch/x86/crypto/sha256-mb/sha256_mb.c @@ -485,10 +485,10 @@ static int sha_complete_job(struct mcryptd_hash_request_ctx *rctx, req = cast_mcryptd_ctx_to_req(req_ctx); if (irqs_disabled()) - rctx->complete(&req->base, ret); + req_ctx->complete(&req->base, ret); else { local_bh_disable(); - rctx->complete(&req->base, ret); + req_ctx->complete(&req->base, ret); local_bh_enable(); } } diff --git a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S index b691da9..a78a069 100644 --- a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S +++ b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S @@ -265,13 +265,14 @@ ENTRY(sha256_mb_mgr_get_comp_job_avx2) vpinsrd $1, _args_digest+1*32(state, idx, 4), %xmm0, %xmm0 vpinsrd $2, _args_digest+2*32(state, idx, 4), %xmm0, %xmm0 vpinsrd $3, _args_digest+3*32(state, idx, 4), %xmm0, %xmm0 - movl _args_digest+4*32(state, idx, 4), tmp2_w + vmovd _args_digest(state , idx, 4) , %xmm0 vpinsrd $1, _args_digest+5*32(state, idx, 4), %xmm1, %xmm1 vpinsrd $2, _args_digest+6*32(state, idx, 4), %xmm1, %xmm1 vpinsrd $3, _args_digest+7*32(state, idx, 4), %xmm1, %xmm1 - vmovdqu %xmm0, _result_digest(job_rax) - movl tmp2_w, _result_digest+1*16(job_rax) + vmovdqu %xmm0, _result_digest(job_rax) + offset = (_result_digest + 1*16) + vmovdqu %xmm1, offset(job_rax) pop %rbx -- cgit v0.10.2 From e67479b13ede47cc2f5beb5b51e67fdb30778ee8 Mon Sep 17 00:00:00 2001 From: Xiaodong Liu Date: Fri, 12 Aug 2016 06:28:31 -0400 Subject: crypto: sha512-mb - fix ctx pointer 1. fix ctx pointer Use req_ctx which is the ctx for the next job that have been completed in the lanes instead of the first completed job rctx, whose completion could have been called and released. Signed-off-by: Xiaodong Liu Signed-off-by: Herbert Xu diff --git a/arch/x86/crypto/sha512-mb/sha512_mb.c b/arch/x86/crypto/sha512-mb/sha512_mb.c index f4cf5b7..d210174 100644 --- a/arch/x86/crypto/sha512-mb/sha512_mb.c +++ b/arch/x86/crypto/sha512-mb/sha512_mb.c @@ -497,10 +497,10 @@ static int sha_complete_job(struct mcryptd_hash_request_ctx *rctx, req = cast_mcryptd_ctx_to_req(req_ctx); if (irqs_disabled()) - rctx->complete(&req->base, ret); + req_ctx->complete(&req->base, ret); else { local_bh_disable(); - rctx->complete(&req->base, ret); + req_ctx->complete(&req->base, ret); local_bh_enable(); } } -- cgit v0.10.2 From b0f12c61de013ecb0abe19d5e64bdab45989de5a Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 16 Aug 2016 11:24:46 +0100 Subject: ASoC: compress: Fix leak of a widget list in soc_compr_open_fe After we have called dpcm_path_get we should make sure to call dpcm_path_put on all error paths. This was not happening causing the allocated widget list to be leaked, this patch corrects this by adding a dpcm_path_put to the error path. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index d2df46c..bf7b52f 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -121,7 +121,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) dpcm_be_disconnect(fe, stream); fe->dpcm[stream].runtime = NULL; - goto fe_err; + goto path_err; } dpcm_clear_pending_state(fe, stream); @@ -136,6 +136,8 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) return 0; +path_err: + dpcm_path_put(&list); fe_err: if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream); -- cgit v0.10.2 From 3e103a65514c2947e53f3171b21255fbde8b60c6 Mon Sep 17 00:00:00 2001 From: Christoph Huber Date: Mon, 15 Aug 2016 18:59:25 +0200 Subject: ASoC: atmel_ssc_dai: Don't unconditionally reset SSC on stream startup commit cbaadf0f90d6 ("ASoC: atmel_ssc_dai: refactor the startup and shutdown") refactored code such that the SSC is reset on every startup; this breaks duplex audio (e.g. first start audio playback, then start record, causing the playback to stop/hang) Fixes: cbaadf0f90d6 (ASoC: atmel_ssc_dai: refactor the startup and shutdown) Signed-off-by: Christoph Huber Signed-off-by: Peter Meerwald-Stadler Signed-off-by: Mark Brown Cc: stable@vger.kernel.org diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c index 54c09ac..16e459a 100644 --- a/sound/soc/atmel/atmel_ssc_dai.c +++ b/sound/soc/atmel/atmel_ssc_dai.c @@ -299,8 +299,9 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream, clk_enable(ssc_p->ssc->clk); ssc_p->mck_rate = clk_get_rate(ssc_p->ssc->clk); - /* Reset the SSC to keep it at a clean status */ - ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST)); + /* Reset the SSC unless initialized to keep it in a clean state */ + if (!ssc_p->initialized) + ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST)); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { dir = 0; -- cgit v0.10.2 From 3256aaef5e9a851f6be47656868020726e102187 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= Date: Tue, 16 Aug 2016 15:11:25 +0200 Subject: nvmet-rdma: Fix use after free MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Avoid dereferencing the queue pointer in nvmet_rdma_release_queue_work() after it has been freed by nvmet_rdma_free_queue(). Fixes: d8f7750a08968b10 ("nvmet-rdma: Correctly handle RDMA device hot removal") Signed-off-by: Vincent Stehlé Cc: Sagi Grimberg Cc: Christoph Hellwig Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c index b4d6485..5de8d0a 100644 --- a/drivers/nvme/target/rdma.c +++ b/drivers/nvme/target/rdma.c @@ -978,10 +978,11 @@ static void nvmet_rdma_release_queue_work(struct work_struct *w) container_of(w, struct nvmet_rdma_queue, release_work); struct rdma_cm_id *cm_id = queue->cm_id; struct nvmet_rdma_device *dev = queue->dev; + enum nvmet_rdma_queue_state state = queue->state; nvmet_rdma_free_queue(queue); - if (queue->state != NVMET_RDMA_IN_DEVICE_REMOVAL) + if (state != NVMET_RDMA_IN_DEVICE_REMOVAL) rdma_destroy_id(cm_id); kref_put(&dev->ref, nvmet_rdma_free_dev); -- cgit v0.10.2 From a956beda19a6b39fbc19d0aaf21947acdc18cf74 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 16 Aug 2016 10:26:47 -0400 Subject: NFS: Allow the mount option retrans=0 We should allow retrans=0 as just meaning that every timeout is a major timeout, and that there is no increment in the timeout value. For instance, this means that we would allow TCP users to specify a flat timeout value of 60s, by specifying "timeo=600,retrans=0" in their mount option string. Siged-off-by: Trond Myklebust diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 003ebce..1e10678 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -426,7 +426,7 @@ EXPORT_SYMBOL_GPL(nfs_mark_client_ready); * Initialise the timeout values for a connection */ void nfs_init_timeout_values(struct rpc_timeout *to, int proto, - unsigned int timeo, unsigned int retrans) + int timeo, int retrans) { to->to_initval = timeo * HZ / 10; to->to_retries = retrans; @@ -434,9 +434,9 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto, switch (proto) { case XPRT_TRANSPORT_TCP: case XPRT_TRANSPORT_RDMA: - if (to->to_retries == 0) + if (retrans == NFS_UNSPEC_RETRANS) to->to_retries = NFS_DEF_TCP_RETRANS; - if (to->to_initval == 0) + if (timeo == NFS_UNSPEC_TIMEO || to->to_retries == 0) to->to_initval = NFS_DEF_TCP_TIMEO * HZ / 10; if (to->to_initval > NFS_MAX_TCP_TIMEOUT) to->to_initval = NFS_MAX_TCP_TIMEOUT; @@ -449,9 +449,9 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto, to->to_exponential = 0; break; case XPRT_TRANSPORT_UDP: - if (to->to_retries == 0) + if (retrans == NFS_UNSPEC_RETRANS) to->to_retries = NFS_DEF_UDP_RETRANS; - if (!to->to_initval) + if (timeo == NFS_UNSPEC_TIMEO || to->to_initval == 0) to->to_initval = NFS_DEF_UDP_TIMEO * HZ / 10; if (to->to_initval > NFS_MAX_UDP_TIMEOUT) to->to_initval = NFS_MAX_UDP_TIMEOUT; diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 7ce5e02..74935a1 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -58,6 +58,9 @@ struct nfs_clone_mount { */ #define NFS_UNSPEC_PORT (-1) +#define NFS_UNSPEC_RETRANS (UINT_MAX) +#define NFS_UNSPEC_TIMEO (UINT_MAX) + /* * Maximum number of pages that readdir can use for creating * a vmapped array of pages. @@ -156,7 +159,7 @@ struct nfs_client *nfs_get_client(const struct nfs_client_initdata *, int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *, struct nfs_fattr *); void nfs_server_insert_lists(struct nfs_server *); void nfs_server_remove_lists(struct nfs_server *); -void nfs_init_timeout_values(struct rpc_timeout *, int, unsigned int, unsigned int); +void nfs_init_timeout_values(struct rpc_timeout *to, int proto, int timeo, int retrans); int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t, rpc_authflavor_t); struct nfs_server *nfs_alloc_server(void); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 18d446e..d396013 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -923,6 +923,8 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void) data = kzalloc(sizeof(*data), GFP_KERNEL); if (data) { + data->timeo = NFS_UNSPEC_TIMEO; + data->retrans = NFS_UNSPEC_RETRANS; data->acregmin = NFS_DEF_ACREGMIN; data->acregmax = NFS_DEF_ACREGMAX; data->acdirmin = NFS_DEF_ACDIRMIN; @@ -1189,6 +1191,19 @@ static int nfs_get_option_ul(substring_t args[], unsigned long *option) return rc; } +static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option, + unsigned long l_bound, unsigned long u_bound) +{ + int ret; + + ret = nfs_get_option_ul(args, option); + if (ret != 0) + return ret; + if (*option < l_bound || *option > u_bound) + return -ERANGE; + return 0; +} + /* * Error-check and convert a string of mount options from user space into * a data structure. The whole mount string is processed; bad options are @@ -1352,12 +1367,12 @@ static int nfs_parse_mount_options(char *raw, mnt->bsize = option; break; case Opt_timeo: - if (nfs_get_option_ul(args, &option) || option == 0) + if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX)) goto out_invalid_value; mnt->timeo = option; break; case Opt_retrans: - if (nfs_get_option_ul(args, &option) || option == 0) + if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX)) goto out_invalid_value; mnt->retrans = option; break; -- cgit v0.10.2 From 15d03055cf39fe61714aeda8d0a722b3137531ed Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 16 Aug 2016 11:08:22 -0400 Subject: pNFS/flexfiles: Set reasonable default retrans values for the data channel Prior to this patch, the retrans value was set at 5, meaning that we could see a maximum retransmission timeout value of more than 6 minutes. That's a tad high for NFSv3 where the protocol does allow the server to drop requests at any time. Since this is a data channel, let's just set retrans to 0, and the default timeout to 60s. The user can continue to adjust these defaults using the dataserver_retrans and dataserver_timeo module parameters. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c index 0aa36be..970efba 100644 --- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -17,8 +17,8 @@ #define NFSDBG_FACILITY NFSDBG_PNFS_LD -static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO; -static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS; +static unsigned int dataserver_timeo = NFS_DEF_TCP_RETRANS; +static unsigned int dataserver_retrans; void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds) { -- cgit v0.10.2 From 7afafc8a44bf0ab841b17d450b02aedb3a138985 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 16 Aug 2016 10:59:35 +0300 Subject: block: Fix secure erase Commit 288dab8a35a0 ("block: add a separate operation type for secure erase") split REQ_OP_SECURE_ERASE from REQ_OP_DISCARD without considering all the places REQ_OP_DISCARD was being used to mean either. Fix those. Signed-off-by: Adrian Hunter Fixes: 288dab8a35a0 ("block: add a separate operation type for secure erase") Signed-off-by: Jens Axboe diff --git a/block/bio.c b/block/bio.c index f394775..aa73540 100644 --- a/block/bio.c +++ b/block/bio.c @@ -667,18 +667,19 @@ struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector; bio->bi_iter.bi_size = bio_src->bi_iter.bi_size; - if (bio_op(bio) == REQ_OP_DISCARD) - goto integrity_clone; - - if (bio_op(bio) == REQ_OP_WRITE_SAME) { + switch (bio_op(bio)) { + case REQ_OP_DISCARD: + case REQ_OP_SECURE_ERASE: + break; + case REQ_OP_WRITE_SAME: bio->bi_io_vec[bio->bi_vcnt++] = bio_src->bi_io_vec[0]; - goto integrity_clone; + break; + default: + bio_for_each_segment(bv, bio_src, iter) + bio->bi_io_vec[bio->bi_vcnt++] = bv; + break; } - bio_for_each_segment(bv, bio_src, iter) - bio->bi_io_vec[bio->bi_vcnt++] = bv; - -integrity_clone: if (bio_integrity(bio_src)) { int ret; @@ -1788,7 +1789,7 @@ struct bio *bio_split(struct bio *bio, int sectors, * Discards need a mutable bio_vec to accommodate the payload * required by the DSM TRIM and UNMAP commands. */ - if (bio_op(bio) == REQ_OP_DISCARD) + if (bio_op(bio) == REQ_OP_DISCARD || bio_op(bio) == REQ_OP_SECURE_ERASE) split = bio_clone_bioset(bio, gfp, bs); else split = bio_clone_fast(bio, gfp, bs); diff --git a/block/blk-merge.c b/block/blk-merge.c index 3eec75a..72627e3 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -172,12 +172,18 @@ void blk_queue_split(struct request_queue *q, struct bio **bio, struct bio *split, *res; unsigned nsegs; - if (bio_op(*bio) == REQ_OP_DISCARD) + switch (bio_op(*bio)) { + case REQ_OP_DISCARD: + case REQ_OP_SECURE_ERASE: split = blk_bio_discard_split(q, *bio, bs, &nsegs); - else if (bio_op(*bio) == REQ_OP_WRITE_SAME) + break; + case REQ_OP_WRITE_SAME: split = blk_bio_write_same_split(q, *bio, bs, &nsegs); - else + break; + default: split = blk_bio_segment_split(q, *bio, q->bio_split, &nsegs); + break; + } /* physical segments can be figured out during splitting */ res = split ? split : *bio; @@ -213,7 +219,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, * This should probably be returning 0, but blk_add_request_payload() * (Christoph!!!!) */ - if (bio_op(bio) == REQ_OP_DISCARD) + if (bio_op(bio) == REQ_OP_DISCARD || bio_op(bio) == REQ_OP_SECURE_ERASE) return 1; if (bio_op(bio) == REQ_OP_WRITE_SAME) @@ -385,7 +391,9 @@ static int __blk_bios_map_sg(struct request_queue *q, struct bio *bio, nsegs = 0; cluster = blk_queue_cluster(q); - if (bio_op(bio) == REQ_OP_DISCARD) { + switch (bio_op(bio)) { + case REQ_OP_DISCARD: + case REQ_OP_SECURE_ERASE: /* * This is a hack - drivers should be neither modifying the * biovec, nor relying on bi_vcnt - but because of @@ -393,19 +401,16 @@ static int __blk_bios_map_sg(struct request_queue *q, struct bio *bio, * a payload we need to set up here (thank you Christoph) and * bi_vcnt is really the only way of telling if we need to. */ - - if (bio->bi_vcnt) - goto single_segment; - - return 0; - } - - if (bio_op(bio) == REQ_OP_WRITE_SAME) { -single_segment: + if (!bio->bi_vcnt) + return 0; + /* Fall through */ + case REQ_OP_WRITE_SAME: *sg = sglist; bvec = bio_iovec(bio); sg_set_page(*sg, bvec.bv_page, bvec.bv_len, bvec.bv_offset); return 1; + default: + break; } for_each_bio(bio) diff --git a/block/elevator.c b/block/elevator.c index 7096c22..f7d973a 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -366,7 +366,7 @@ void elv_dispatch_sort(struct request_queue *q, struct request *rq) list_for_each_prev(entry, &q->queue_head) { struct request *pos = list_entry_rq(entry); - if ((req_op(rq) == REQ_OP_DISCARD) != (req_op(pos) == REQ_OP_DISCARD)) + if (req_op(rq) != req_op(pos)) break; if (rq_data_dir(rq) != rq_data_dir(pos)) break; diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 48a5dd7..82503e6 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1726,6 +1726,7 @@ static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req) break; if (req_op(next) == REQ_OP_DISCARD || + req_op(next) == REQ_OP_SECURE_ERASE || req_op(next) == REQ_OP_FLUSH) break; diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index bf14642..29578e9 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -33,7 +33,8 @@ static int mmc_prep_request(struct request_queue *q, struct request *req) /* * We only like normal block requests and discards. */ - if (req->cmd_type != REQ_TYPE_FS && req_op(req) != REQ_OP_DISCARD) { + if (req->cmd_type != REQ_TYPE_FS && req_op(req) != REQ_OP_DISCARD && + req_op(req) != REQ_OP_SECURE_ERASE) { blk_dump_rq_flags(req, "MMC bad request"); return BLKPREP_KILL; } diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h index d625311..fee5e12 100644 --- a/drivers/mmc/card/queue.h +++ b/drivers/mmc/card/queue.h @@ -4,7 +4,9 @@ static inline bool mmc_req_is_special(struct request *req) { return req && - (req_op(req) == REQ_OP_FLUSH || req_op(req) == REQ_OP_DISCARD); + (req_op(req) == REQ_OP_FLUSH || + req_op(req) == REQ_OP_DISCARD || + req_op(req) == REQ_OP_SECURE_ERASE); } struct request; diff --git a/include/linux/bio.h b/include/linux/bio.h index 59ffaa6..23ddf4b 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -71,7 +71,8 @@ static inline bool bio_has_data(struct bio *bio) { if (bio && bio->bi_iter.bi_size && - bio_op(bio) != REQ_OP_DISCARD) + bio_op(bio) != REQ_OP_DISCARD && + bio_op(bio) != REQ_OP_SECURE_ERASE) return true; return false; @@ -79,7 +80,9 @@ static inline bool bio_has_data(struct bio *bio) static inline bool bio_no_advance_iter(struct bio *bio) { - return bio_op(bio) == REQ_OP_DISCARD || bio_op(bio) == REQ_OP_WRITE_SAME; + return bio_op(bio) == REQ_OP_DISCARD || + bio_op(bio) == REQ_OP_SECURE_ERASE || + bio_op(bio) == REQ_OP_WRITE_SAME; } static inline bool bio_is_rw(struct bio *bio) @@ -199,6 +202,9 @@ static inline unsigned bio_segments(struct bio *bio) if (bio_op(bio) == REQ_OP_DISCARD) return 1; + if (bio_op(bio) == REQ_OP_SECURE_ERASE) + return 1; + if (bio_op(bio) == REQ_OP_WRITE_SAME) return 1; diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 2c210b6..e79055c 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -882,7 +882,7 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq) static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q, int op) { - if (unlikely(op == REQ_OP_DISCARD)) + if (unlikely(op == REQ_OP_DISCARD || op == REQ_OP_SECURE_ERASE)) return min(q->limits.max_discard_sectors, UINT_MAX >> 9); if (unlikely(op == REQ_OP_WRITE_SAME)) @@ -913,7 +913,9 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq, if (unlikely(rq->cmd_type != REQ_TYPE_FS)) return q->limits.max_hw_sectors; - if (!q->limits.chunk_sectors || (req_op(rq) == REQ_OP_DISCARD)) + if (!q->limits.chunk_sectors || + req_op(rq) == REQ_OP_DISCARD || + req_op(rq) == REQ_OP_SECURE_ERASE) return blk_queue_get_max_sectors(q, req_op(rq)); return min(blk_max_size_offset(q, offset), diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 7598e6c..dbafc5d 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -223,7 +223,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, what |= MASK_TC_BIT(op_flags, META); what |= MASK_TC_BIT(op_flags, PREFLUSH); what |= MASK_TC_BIT(op_flags, FUA); - if (op == REQ_OP_DISCARD) + if (op == REQ_OP_DISCARD || op == REQ_OP_SECURE_ERASE) what |= BLK_TC_ACT(BLK_TC_DISCARD); if (op == REQ_OP_FLUSH) what |= BLK_TC_ACT(BLK_TC_FLUSH); -- cgit v0.10.2 From 286054a7a8674b256da16564d96772b88896eb35 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Tue, 16 Aug 2016 17:51:06 +0100 Subject: KVM: arm64: ITS: avoid re-mapping LPIs When a guest wants to map a device-ID/event-ID combination that is already mapped, we may end up in a situation where an LPI is never "put", thus never being freed. Since the GICv3 spec says that mapping an already mapped LPI is UNPREDICTABLE, lets just bail out early in this situation to avoid any potential leaks. Signed-off-by: Andre Przywara Reviewed-by: Christoffer Dall Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 9533080..4660a7d 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -731,7 +731,7 @@ static int vgic_its_cmd_handle_mapi(struct kvm *kvm, struct vgic_its *its, u32 device_id = its_cmd_get_deviceid(its_cmd); u32 event_id = its_cmd_get_id(its_cmd); u32 coll_id = its_cmd_get_collection(its_cmd); - struct its_itte *itte, *new_itte = NULL; + struct its_itte *itte; struct its_device *device; struct its_collection *collection, *new_coll = NULL; int lpi_nr; @@ -749,6 +749,10 @@ static int vgic_its_cmd_handle_mapi(struct kvm *kvm, struct vgic_its *its, lpi_nr >= max_lpis_propbaser(kvm->arch.vgic.propbaser)) return E_ITS_MAPTI_PHYSICALID_OOR; + /* If there is an existing mapping, behavior is UNPREDICTABLE. */ + if (find_itte(its, device_id, event_id)) + return 0; + collection = find_collection(its, coll_id); if (!collection) { int ret = vgic_its_alloc_collection(its, &collection, coll_id); @@ -757,20 +761,16 @@ static int vgic_its_cmd_handle_mapi(struct kvm *kvm, struct vgic_its *its, new_coll = collection; } - itte = find_itte(its, device_id, event_id); + itte = kzalloc(sizeof(struct its_itte), GFP_KERNEL); if (!itte) { - itte = kzalloc(sizeof(struct its_itte), GFP_KERNEL); - if (!itte) { - if (new_coll) - vgic_its_free_collection(its, coll_id); - return -ENOMEM; - } - - new_itte = itte; - itte->event_id = event_id; - list_add_tail(&itte->itte_list, &device->itt_head); + if (new_coll) + vgic_its_free_collection(its, coll_id); + return -ENOMEM; } + itte->event_id = event_id; + list_add_tail(&itte->itte_list, &device->itt_head); + itte->collection = collection; itte->lpi = lpi_nr; @@ -778,8 +778,7 @@ static int vgic_its_cmd_handle_mapi(struct kvm *kvm, struct vgic_its *its, if (IS_ERR(irq)) { if (new_coll) vgic_its_free_collection(its, coll_id); - if (new_itte) - its_free_itte(kvm, new_itte); + its_free_itte(kvm, itte); return PTR_ERR(irq); } itte->irq = irq; -- cgit v0.10.2 From 67540759151aefafddade3e27c4671ab7b3d230f Mon Sep 17 00:00:00 2001 From: Milian Wolff Date: Tue, 16 Aug 2016 17:39:26 +0200 Subject: perf unwind: Use addr_location::addr instead of ip for entries This fixes the srcline translation for call chains of user space applications. Before we got: perf report --stdio --no-children -s sym,srcline -g address 8.92% [.] main mandelbrot.h:41 | |--3.70%--main +8390240 | __libc_start_main +139950056726769 | _start +8388650 | |--2.74%--main +8390189 | --2.08%--main +8390296 __libc_start_main +139950056726769 _start +8388650 7.59% [.] main complex:1326 | |--4.79%--main +8390203 | __libc_start_main +139950056726769 | _start +8388650 | --2.80%--main +8390219 7.12% [.] __muldc3 libgcc2.c:1945 | |--3.76%--__muldc3 +139950060519490 | main +8390224 | __libc_start_main +139950056726769 | _start +8388650 | --3.32%--__muldc3 +139950060519512 main +8390224 With this patch applied, we instead get: perf report --stdio --no-children -s sym,srcline -g address 8.92% [.] main mandelbrot.h:41 | |--3.70%--main mandelbrot.h:41 | __libc_start_main +241 | _start +4194346 | |--2.74%--main mandelbrot.h:41 | --2.08%--main mandelbrot.h:41 __libc_start_main +241 _start +4194346 7.59% [.] main complex:1326 | |--4.79%--main complex:1326 | __libc_start_main +241 | _start +4194346 | --2.80%--main complex:1326 7.12% [.] __muldc3 libgcc2.c:1945 | |--3.76%--__muldc3 libgcc2.c:1945 | main mandelbrot.h:39 | __libc_start_main +241 | _start +4194346 | --3.32%--__muldc3 libgcc2.c:1945 main mandelbrot.h:39 Suggested-and-Acked-by: Namhyung Kim Signed-off-by: Milian Wolff Tested-by: Arnaldo Carvalho de Melo LPU-Reference: 20160816153926.11288-1-milian.wolff@kdab.com Signed-off-by: Arnaldo Carvalho de Melo diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c index cf5e250..783a53f 100644 --- a/tools/perf/util/unwind-libdw.c +++ b/tools/perf/util/unwind-libdw.c @@ -66,7 +66,7 @@ static int entry(u64 ip, struct unwind_info *ui) if (__report_module(&al, ip, ui)) return -1; - e->ip = ip; + e->ip = al.addr; e->map = al.map; e->sym = al.sym; diff --git a/tools/perf/util/unwind-libunwind-local.c b/tools/perf/util/unwind-libunwind-local.c index 97c0f8f..20c2e57 100644 --- a/tools/perf/util/unwind-libunwind-local.c +++ b/tools/perf/util/unwind-libunwind-local.c @@ -542,7 +542,7 @@ static int entry(u64 ip, struct thread *thread, thread__find_addr_location(thread, PERF_RECORD_MISC_USER, MAP__FUNCTION, ip, &al); - e.ip = ip; + e.ip = al.addr; e.map = al.map; e.sym = al.sym; -- cgit v0.10.2 From 4fe0d154880bb6eb833cbe84fa6f385f400f0b9c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 11 Aug 2016 07:11:04 -0700 Subject: PCI: Use positive flags in pci_alloc_irq_vectors() Instead of passing negative flags like PCI_IRQ_NOMSI to prevent use of certain interrupt types, pass positive flags like PCI_IRQ_LEGACY, PCI_IRQ_MSI, etc., to specify the acceptable interrupt types. This is based on a number of pending driver conversions that just happend to be a whole more obvious to read this way, and given that we have no users in the tree yet it can still easily be done. I've also added a PCI_IRQ_ALL_TYPES catchall to keep the case of accepting all interrupt types very simple. [bhelgaas: changelog, fix PCI_IRQ_AFFINITY doc typo, remove mention of PCI_IRQ_NOLEGACY] Signed-off-by: Christoph Hellwig Signed-off-by: Bjorn Helgaas Reviewed-by: Alexander Gordeev diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt index c55df29..cd9c9f6 100644 --- a/Documentation/PCI/MSI-HOWTO.txt +++ b/Documentation/PCI/MSI-HOWTO.txt @@ -94,14 +94,11 @@ has a requirements for a minimum number of vectors the driver can pass a min_vecs argument set to this limit, and the PCI core will return -ENOSPC if it can't meet the minimum number of vectors. -The flags argument should normally be set to 0, but can be used to pass the -PCI_IRQ_NOMSI and PCI_IRQ_NOMSIX flag in case a device claims to support -MSI or MSI-X, but the support is broken, or to pass PCI_IRQ_NOLEGACY in -case the device does not support legacy interrupt lines. - -By default this function will spread the interrupts around the available -CPUs, but this feature can be disabled by passing the PCI_IRQ_NOAFFINITY -flag. +The flags argument is used to specify which type of interrupt can be used +by the device and the driver (PCI_IRQ_LEGACY, PCI_IRQ_MSI, PCI_IRQ_MSIX). +A convenient short-hand (PCI_IRQ_ALL_TYPES) is also available to ask for +any possible kind of interrupt. If the PCI_IRQ_AFFINITY flag is set, +pci_alloc_irq_vectors() will spread the interrupts around the available CPUs. To get the Linux IRQ numbers passed to request_irq() and free_irq() and the vectors, use the following function: @@ -131,7 +128,7 @@ larger than the number supported by the device it will automatically be capped to the supported limit, so there is no need to query the number of vectors supported beforehand: - nvec = pci_alloc_irq_vectors(pdev, 1, nvec, 0); + nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_ALL_TYPES) if (nvec < 0) goto out_err; @@ -140,7 +137,7 @@ interrupts it can request a particular number of interrupts by passing that number to pci_alloc_irq_vectors() function as both 'min_vecs' and 'max_vecs' parameters: - ret = pci_alloc_irq_vectors(pdev, nvec, nvec, 0); + ret = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_ALL_TYPES); if (ret < 0) goto out_err; @@ -148,15 +145,14 @@ The most notorious example of the request type described above is enabling the single MSI mode for a device. It could be done by passing two 1s as 'min_vecs' and 'max_vecs': - ret = pci_alloc_irq_vectors(pdev, 1, 1, 0); + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); if (ret < 0) goto out_err; Some devices might not support using legacy line interrupts, in which case -the PCI_IRQ_NOLEGACY flag can be used to fail the request if the platform -can't provide MSI or MSI-X interrupts: +the driver can specify that only MSI or MSI-X is acceptable: - nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_NOLEGACY); + nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_MSI | PCI_IRQ_MSIX); if (nvec < 0) goto out_err; diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index a02981e..9233e7f 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1069,7 +1069,7 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, nvec = maxvec; for (;;) { - if (!(flags & PCI_IRQ_NOAFFINITY)) { + if (flags & PCI_IRQ_AFFINITY) { dev->irq_affinity = irq_create_affinity_mask(&nvec); if (nvec < minvec) return -ENOSPC; @@ -1105,7 +1105,7 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, **/ int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec) { - return __pci_enable_msi_range(dev, minvec, maxvec, PCI_IRQ_NOAFFINITY); + return __pci_enable_msi_range(dev, minvec, maxvec, 0); } EXPORT_SYMBOL(pci_enable_msi_range); @@ -1120,7 +1120,7 @@ static int __pci_enable_msix_range(struct pci_dev *dev, return -ERANGE; for (;;) { - if (!(flags & PCI_IRQ_NOAFFINITY)) { + if (flags & PCI_IRQ_AFFINITY) { dev->irq_affinity = irq_create_affinity_mask(&nvec); if (nvec < minvec) return -ENOSPC; @@ -1160,8 +1160,7 @@ static int __pci_enable_msix_range(struct pci_dev *dev, int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec, int maxvec) { - return __pci_enable_msix_range(dev, entries, minvec, maxvec, - PCI_IRQ_NOAFFINITY); + return __pci_enable_msix_range(dev, entries, minvec, maxvec, 0); } EXPORT_SYMBOL(pci_enable_msix_range); @@ -1187,21 +1186,21 @@ int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, { int vecs = -ENOSPC; - if (!(flags & PCI_IRQ_NOMSIX)) { + if (flags & PCI_IRQ_MSIX) { vecs = __pci_enable_msix_range(dev, NULL, min_vecs, max_vecs, flags); if (vecs > 0) return vecs; } - if (!(flags & PCI_IRQ_NOMSI)) { + if (flags & PCI_IRQ_MSI) { vecs = __pci_enable_msi_range(dev, min_vecs, max_vecs, flags); if (vecs > 0) return vecs; } /* use legacy irq if allowed */ - if (!(flags & PCI_IRQ_NOLEGACY) && min_vecs == 1) + if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1) return 1; return vecs; } diff --git a/include/linux/pci.h b/include/linux/pci.h index 2599a98..fbc1fa6 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1251,10 +1251,12 @@ resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno); int pci_set_vga_state(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags); -#define PCI_IRQ_NOLEGACY (1 << 0) /* don't use legacy interrupts */ -#define PCI_IRQ_NOMSI (1 << 1) /* don't use MSI interrupts */ -#define PCI_IRQ_NOMSIX (1 << 2) /* don't use MSI-X interrupts */ -#define PCI_IRQ_NOAFFINITY (1 << 3) /* don't auto-assign affinity */ +#define PCI_IRQ_LEGACY (1 << 0) /* allow legacy interrupts */ +#define PCI_IRQ_MSI (1 << 1) /* allow MSI interrupts */ +#define PCI_IRQ_MSIX (1 << 2) /* allow MSI-X interrupts */ +#define PCI_IRQ_AFFINITY (1 << 3) /* auto-assign affinity */ +#define PCI_IRQ_ALL_TYPES \ + (PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX) /* kmem_cache style wrapper around pci_alloc_consistent() */ -- cgit v0.10.2 From b347af816ad2086c1dacf9f74973b82f83e877be Mon Sep 17 00:00:00 2001 From: Song Liu Date: Thu, 11 Aug 2016 17:14:45 -0700 Subject: md: do not count journal as spare in GET_ARRAY_INFO GET_ARRAY_INFO counts journal as spare (spare_disks), which is not accurate. This patch fixes this. Reported-by: Yi Zhang Signed-off-by: Song Liu Signed-off-by: Shaohua Li diff --git a/drivers/md/md.c b/drivers/md/md.c index 2c3ab6f..d750b52 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5851,6 +5851,9 @@ static int get_array_info(struct mddev *mddev, void __user *arg) working++; if (test_bit(In_sync, &rdev->flags)) insync++; + else if (test_bit(Journal, &rdev->flags)) + /* TODO: add journal count to md_u.h */ + ; else spare++; } -- cgit v0.10.2 From 1b856086813be9371929b6cc62045f9fd470f5a0 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 16 Aug 2016 16:48:36 -0700 Subject: block: Fix race triggered by blk_set_queue_dying() blk_set_queue_dying() can be called while another thread is submitting I/O or changing queue flags, e.g. through dm_stop_queue(). Hence protect the QUEUE_FLAG_DYING flag change with locking. Signed-off-by: Bart Van Assche Cc: Christoph Hellwig Cc: Mike Snitzer Cc: stable Signed-off-by: Jens Axboe diff --git a/block/blk-core.c b/block/blk-core.c index 999442e..36c7ac3 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -515,7 +515,9 @@ EXPORT_SYMBOL_GPL(blk_queue_bypass_end); void blk_set_queue_dying(struct request_queue *q) { - queue_flag_set_unlocked(QUEUE_FLAG_DYING, q); + spin_lock_irq(q->queue_lock); + queue_flag_set(QUEUE_FLAG_DYING, q); + spin_unlock_irq(q->queue_lock); if (q->mq_ops) blk_mq_wake_waiters(q); -- cgit v0.10.2 From 9ac715954682b23d293d910ad2697554171035e7 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Wed, 17 Aug 2016 10:46:10 +0200 Subject: KVM: arm/arm64: Change misleading use of is_error_pfn When converting a gfn to a pfn, we call gfn_to_pfn_prot, which returns various kinds of error values. It turns out that is_error_pfn() only returns true when the gfn was found in a memory slot and could somehow not be used, but it does not return true if the gfn does not belong to any memory slot. Change use to is_error_noslot_pfn() which covers both cases. Note: Since we already check for kvm_is_error_hva(hva) explicitly in the caller of this function while holding the kvm->srcu lock protecting the memory slots, this should never be a problem, but nevertheless this change is warranted as it shows the intention of the code. Reported-by: James Hogan Signed-off-by: Christoffer Dall diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index bda27b6..29d0b23 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -1309,7 +1309,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, smp_rmb(); pfn = gfn_to_pfn_prot(kvm, gfn, write_fault, &writable); - if (is_error_pfn(pfn)) + if (is_error_noslot_pfn(pfn)) return -EFAULT; if (kvm_is_device_pfn(pfn)) { -- cgit v0.10.2 From 4e486cba285ff06a1f28f0fc2991dde1482d1dcf Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Tue, 2 Aug 2016 16:45:37 +0100 Subject: bus: arm-ccn: Fix PMU handling of MN The "Miscellaneous Node" fell through cracks of node initialisation, as its ID is shared with HN-I. This patch treats MN as a special case (which it is), adding separate validation check for it and pre-defining the node ID in relevant events descriptions. That way one can simply run: # perf stat -a -e ccn/mn_ecbarrier/ Additionally, direction in the MN pseudo-events XP watchpoint definitions is corrected to be "TX" (1) as they are defined from the crosspoint point of view (thus barriers are transmitted from XP to MN). Cc: stable@vger.kernel.org # 3.17+ Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 97a9185..a11b9bb 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -187,6 +187,7 @@ struct arm_ccn { struct arm_ccn_component *xp; struct arm_ccn_dt dt; + int mn_id; }; static DEFINE_MUTEX(arm_ccn_mutex); @@ -328,6 +329,7 @@ struct arm_ccn_pmu_event { static ssize_t arm_ccn_pmu_event_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct arm_ccn *ccn = pmu_to_arm_ccn(dev_get_drvdata(dev)); struct arm_ccn_pmu_event *event = container_of(attr, struct arm_ccn_pmu_event, attr); ssize_t res; @@ -354,6 +356,9 @@ static ssize_t arm_ccn_pmu_event_show(struct device *dev, res += snprintf(buf + res, PAGE_SIZE - res, ",cmp_l=?,cmp_h=?,mask=?"); break; + case CCN_TYPE_MN: + res += snprintf(buf + res, PAGE_SIZE - res, ",node=%d", ccn->mn_id); + break; default: res += snprintf(buf + res, PAGE_SIZE - res, ",node=?"); break; @@ -383,9 +388,9 @@ static umode_t arm_ccn_pmu_events_is_visible(struct kobject *kobj, } static struct arm_ccn_pmu_event arm_ccn_pmu_events[] = { - CCN_EVENT_MN(eobarrier, "dir=0,vc=0,cmp_h=0x1c00", CCN_IDX_MASK_OPCODE), - CCN_EVENT_MN(ecbarrier, "dir=0,vc=0,cmp_h=0x1e00", CCN_IDX_MASK_OPCODE), - CCN_EVENT_MN(dvmop, "dir=0,vc=0,cmp_h=0x2800", CCN_IDX_MASK_OPCODE), + CCN_EVENT_MN(eobarrier, "dir=1,vc=0,cmp_h=0x1c00", CCN_IDX_MASK_OPCODE), + CCN_EVENT_MN(ecbarrier, "dir=1,vc=0,cmp_h=0x1e00", CCN_IDX_MASK_OPCODE), + CCN_EVENT_MN(dvmop, "dir=1,vc=0,cmp_h=0x2800", CCN_IDX_MASK_OPCODE), CCN_EVENT_HNI(txdatflits, "dir=1,vc=3", CCN_IDX_MASK_ANY), CCN_EVENT_HNI(rxdatflits, "dir=0,vc=3", CCN_IDX_MASK_ANY), CCN_EVENT_HNI(txreqflits, "dir=1,vc=0", CCN_IDX_MASK_ANY), @@ -759,6 +764,12 @@ static int arm_ccn_pmu_event_init(struct perf_event *event) /* Validate node/xp vs topology */ switch (type) { + case CCN_TYPE_MN: + if (node_xp != ccn->mn_id) { + dev_warn(ccn->dev, "Invalid MN ID %d!\n", node_xp); + return -EINVAL; + } + break; case CCN_TYPE_XP: if (node_xp >= ccn->num_xps) { dev_warn(ccn->dev, "Invalid XP ID %d!\n", node_xp); @@ -1361,6 +1372,8 @@ static int arm_ccn_init_nodes(struct arm_ccn *ccn, int region, switch (type) { case CCN_TYPE_MN: + ccn->mn_id = id; + return 0; case CCN_TYPE_DT: return 0; case CCN_TYPE_XP: -- cgit v0.10.2 From b7c1beb278e8e3dc664ed3df3fc786db126120a9 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Fri, 5 Aug 2016 15:07:10 +0100 Subject: bus: arm-ccn: Do not attempt to configure XPs for cycle counter Fuzzing the CCN perf driver revealed a small but definitely dangerous mistake in the event setup code. When a cycle counter is requested, the driver should not reconfigure the events bus at all, otherwise it will corrupt (in most but the simplest cases) its configuration and may end up accessing XP array out of its bounds and corrupting control registers. Reported-by: Mark Rutland Reviewed-by: Mark Rutland Tested-by: Mark Rutland Cc: stable@vger.kernel.org # 3.17+ Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index a11b9bb..9bbb0ab 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -897,6 +897,10 @@ static void arm_ccn_pmu_xp_dt_config(struct perf_event *event, int enable) struct arm_ccn_component *xp; u32 val, dt_cfg; + /* Nothing to do for cycle counter */ + if (hw->idx == CCN_IDX_PMU_CYCLE_COUNTER) + return; + if (CCN_CONFIG_TYPE(event->attr.config) == CCN_TYPE_XP) xp = &ccn->xp[CCN_CONFIG_XP(event->attr.config)]; else -- cgit v0.10.2 From b928466b2169e061822daad48ecf55b005445547 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Wed, 10 Aug 2016 17:06:26 +0100 Subject: bus: arm-ccn: Fix XP watchpoint settings bitmask The code setting XP watchpoint comparator and mask registers should, in order to be fully compliant with specification, zero one or more most significant bits of each field. In both L cases it means zeroing bit 63. The bitmask doing this was wrong, though, zeroing bit 60 instead. Fortunately, due to a lucky coincidence, this turned out to be fairly innocent with the existing hardware. Fixed now. Cc: stable@vger.kernel.org # 3.17+ Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 9bbb0ab..647a27b 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -1003,7 +1003,7 @@ static void arm_ccn_pmu_xp_watchpoint_config(struct perf_event *event) /* Comparison values */ writel(cmp_l & 0xffffffff, source->base + CCN_XP_DT_CMP_VAL_L(wp)); - writel((cmp_l >> 32) & 0xefffffff, + writel((cmp_l >> 32) & 0x7fffffff, source->base + CCN_XP_DT_CMP_VAL_L(wp) + 4); writel(cmp_h & 0xffffffff, source->base + CCN_XP_DT_CMP_VAL_H(wp)); writel((cmp_h >> 32) & 0x0fffffff, @@ -1011,7 +1011,7 @@ static void arm_ccn_pmu_xp_watchpoint_config(struct perf_event *event) /* Mask */ writel(mask_l & 0xffffffff, source->base + CCN_XP_DT_CMP_MASK_L(wp)); - writel((mask_l >> 32) & 0xefffffff, + writel((mask_l >> 32) & 0x7fffffff, source->base + CCN_XP_DT_CMP_MASK_L(wp) + 4); writel(mask_h & 0xffffffff, source->base + CCN_XP_DT_CMP_MASK_H(wp)); writel((mask_h >> 32) & 0x0fffffff, -- cgit v0.10.2 From 674e70127069f3fd3c58fb0f94c60eb0f6567d78 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 16 Aug 2016 15:03:01 +0100 Subject: arm64: Document workaround for Cortex-A72 erratum #853709 We already have a workaround for Cortex-A57 erratum #852523, but Cortex-A72 r0p0 to r0p2 do suffer from the same issue (known as erratum #853709). Let's document the fact that we already handle this. Acked-by: Will Deacon Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall diff --git a/Documentation/arm64/silicon-errata.txt b/Documentation/arm64/silicon-errata.txt index 4da60b4..ccc6032 100644 --- a/Documentation/arm64/silicon-errata.txt +++ b/Documentation/arm64/silicon-errata.txt @@ -53,6 +53,7 @@ stable kernels. | ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 | | ARM | Cortex-A57 | #852523 | N/A | | ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 | +| ARM | Cortex-A72 | #853709 | N/A | | ARM | MMU-500 | #841119,#826419 | N/A | | | | | | | Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 | diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c index ae7855f..5a84b45 100644 --- a/arch/arm64/kvm/hyp/switch.c +++ b/arch/arm64/kvm/hyp/switch.c @@ -256,7 +256,7 @@ static int __hyp_text __guest_run(struct kvm_vcpu *vcpu) /* * We must restore the 32-bit state before the sysregs, thanks - * to Cortex-A57 erratum #852523. + * to erratum #852523 (Cortex-A57) or #853709 (Cortex-A72). */ __sysreg32_restore_state(vcpu); __sysreg_restore_guest_state(guest_ctxt); -- cgit v0.10.2 From cabdc5c59ab46a1ec5ea98c5ac4022111fbfd63a Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 16 Aug 2016 15:03:02 +0100 Subject: KVM: arm/arm64: timer: Workaround misconfigured timer interrupt Similarily to f005bd7e3b84 ("clocksource/arm_arch_timer: Force per-CPU interrupt to be level-triggered"), make sure we can survive an interrupt that has been misconfigured as edge-triggered by forcing it to be level-triggered (active low is assumed, but the GIC doesn't really care whether this is high or low). Hopefully, the amount of shouting in the kernel log will convince the user to do something about their firmware. Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 4fde8c7..77e6ccf 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -33,6 +33,7 @@ static struct timecounter *timecounter; static struct workqueue_struct *wqueue; static unsigned int host_vtimer_irq; +static u32 host_vtimer_irq_flags; void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu) { @@ -365,7 +366,7 @@ void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu) static void kvm_timer_init_interrupt(void *info) { - enable_percpu_irq(host_vtimer_irq, 0); + enable_percpu_irq(host_vtimer_irq, host_vtimer_irq_flags); } int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value) @@ -432,6 +433,14 @@ int kvm_timer_hyp_init(void) } host_vtimer_irq = info->virtual_irq; + host_vtimer_irq_flags = irq_get_trigger_type(host_vtimer_irq); + if (host_vtimer_irq_flags != IRQF_TRIGGER_HIGH && + host_vtimer_irq_flags != IRQF_TRIGGER_LOW) { + kvm_err("Invalid trigger for IRQ%d, assuming level low\n", + host_vtimer_irq); + host_vtimer_irq_flags = IRQF_TRIGGER_LOW; + } + err = request_percpu_irq(host_vtimer_irq, kvm_arch_timer_handler, "kvm guest timer", kvm_get_running_vcpus()); if (err) { -- cgit v0.10.2 From 1e12c4a9393b75a744aada2c8115434572698bc3 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 11 Aug 2016 14:19:42 +0100 Subject: genirq: Correctly configure the trigger on chained interrupts Commit 1e2a7d78499e ("irqdomain: Don't set type when mapping an IRQ") moved the trigger configuration call from the irqdomain mapping to the interrupt being actually requested. This patch failed to handle the case where we configure a chained interrupt, which doesn't get requested through the usual path. In order to solve this, let's call __irq_set_trigger just before starting the cascade interrupt. Special care must be taken to make the flow handler stick, as the .irq_set_type method could have reset it (it doesn't know we're dealing with a chained interrupt). Based on an initial patch by Jon Hunter. Fixes: 1e2a7d78499e ("irqdomain: Don't set type when mapping an IRQ") Reported-by: John Stultz Reported-by: Linus Walleij Tested-by: John Stultz Acked-by: Jon Hunter Signed-off-by: Marc Zyngier diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index b4c1bc7..6373890 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -820,6 +820,17 @@ __irq_do_set_handler(struct irq_desc *desc, irq_flow_handler_t handle, desc->name = name; if (handle != handle_bad_irq && is_chained) { + /* + * We're about to start this interrupt immediately, + * hence the need to set the trigger configuration. + * But the .set_type callback may have overridden the + * flow handler, ignoring that we're dealing with a + * chained interrupt. Reset it immediately because we + * do know better. + */ + __irq_set_trigger(desc, irqd_get_trigger_type(&desc->irq_data)); + desc->handle_irq = handle; + irq_settings_set_noprobe(desc); irq_settings_set_norequest(desc); irq_settings_set_nothread(desc); -- cgit v0.10.2 From 90d11e267a32a25d2cb69127174a96b9e518395e Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Thu, 11 Aug 2016 11:56:28 +0100 Subject: bus: arm-ccn: Correct required arguments for XP PMU events XP can provide events from two sources: watchpoints, observing traffic on device ports and PMU looking at internal buses. Unfortunately the sysfs definition of the PMU events was requiring port number (instead of bus number) and direction (the buses are unidirectional), as these fields were shared with the watchpoint event. Although it does not introduce a major problem (port can be used as bus alias and direction is simply ignored for XP PMU events), it's better to fix it now, before external tools start depending on this behaviour. Signed-off-by: Pawel Moll diff --git a/Documentation/arm/CCN.txt b/Documentation/arm/CCN.txt index ffca443..15cdb7b 100644 --- a/Documentation/arm/CCN.txt +++ b/Documentation/arm/CCN.txt @@ -18,13 +18,17 @@ and config2 fields of the perf_event_attr structure. The "events" directory provides configuration templates for all documented events, that can be used with perf tool. For example "xp_valid_flit" is an equivalent of "type=0x8,event=0x4". Other parameters must be -explicitly specified. For events originating from device, "node" -defines its index. All crosspoint events require "xp" (index), -"port" (device port number) and "vc" (virtual channel ID) and -"dir" (direction). Watchpoints (special "event" value 0xfe) also -require comparator values ("cmp_l" and "cmp_h") and "mask", being -index of the comparator mask. +explicitly specified. +For events originating from device, "node" defines its index. + +Crosspoint PMU events require "xp" (index), "bus" (bus number) +and "vc" (virtual channel ID). + +Crosspoint watchpoint-based events (special "event" value 0xfe) +require "xp" and "vc" as as above plus "port" (device port index), +"dir" (transmit/receive direction), comparator values ("cmp_l" +and "cmp_h") and "mask", being index of the comparator mask. Masks are defined separately from the event description (due to limited number of the config values) in the "cmp_mask" directory, with first 8 configurable by user and additional diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 647a27b..ddb65c1 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -213,6 +213,7 @@ static int arm_ccn_node_to_xp_port(int node) #define CCN_CONFIG_TYPE(_config) (((_config) >> 8) & 0xff) #define CCN_CONFIG_EVENT(_config) (((_config) >> 16) & 0xff) #define CCN_CONFIG_PORT(_config) (((_config) >> 24) & 0x3) +#define CCN_CONFIG_BUS(_config) (((_config) >> 24) & 0x3) #define CCN_CONFIG_VC(_config) (((_config) >> 26) & 0x7) #define CCN_CONFIG_DIR(_config) (((_config) >> 29) & 0x1) #define CCN_CONFIG_MASK(_config) (((_config) >> 30) & 0xf) @@ -242,6 +243,7 @@ static CCN_FORMAT_ATTR(xp, "config:0-7"); static CCN_FORMAT_ATTR(type, "config:8-15"); static CCN_FORMAT_ATTR(event, "config:16-23"); static CCN_FORMAT_ATTR(port, "config:24-25"); +static CCN_FORMAT_ATTR(bus, "config:24-25"); static CCN_FORMAT_ATTR(vc, "config:26-28"); static CCN_FORMAT_ATTR(dir, "config:29-29"); static CCN_FORMAT_ATTR(mask, "config:30-33"); @@ -254,6 +256,7 @@ static struct attribute *arm_ccn_pmu_format_attrs[] = { &arm_ccn_pmu_format_attr_type.attr.attr, &arm_ccn_pmu_format_attr_event.attr.attr, &arm_ccn_pmu_format_attr_port.attr.attr, + &arm_ccn_pmu_format_attr_bus.attr.attr, &arm_ccn_pmu_format_attr_vc.attr.attr, &arm_ccn_pmu_format_attr_dir.attr.attr, &arm_ccn_pmu_format_attr_mask.attr.attr, @@ -351,10 +354,14 @@ static ssize_t arm_ccn_pmu_event_show(struct device *dev, break; case CCN_TYPE_XP: res += snprintf(buf + res, PAGE_SIZE - res, - ",xp=?,port=?,vc=?,dir=?"); + ",xp=?,vc=?"); if (event->event == CCN_EVENT_WATCHPOINT) res += snprintf(buf + res, PAGE_SIZE - res, - ",cmp_l=?,cmp_h=?,mask=?"); + ",port=?,dir=?,cmp_l=?,cmp_h=?,mask=?"); + else + res += snprintf(buf + res, PAGE_SIZE - res, + ",bus=?"); + break; case CCN_TYPE_MN: res += snprintf(buf + res, PAGE_SIZE - res, ",node=%d", ccn->mn_id); @@ -1029,7 +1036,7 @@ static void arm_ccn_pmu_xp_event_config(struct perf_event *event) hw->event_base = CCN_XP_DT_CONFIG__DT_CFG__XP_PMU_EVENT(hw->config_base); id = (CCN_CONFIG_VC(event->attr.config) << 4) | - (CCN_CONFIG_PORT(event->attr.config) << 3) | + (CCN_CONFIG_BUS(event->attr.config) << 3) | (CCN_CONFIG_EVENT(event->attr.config) << 0); val = readl(source->base + CCN_XP_PMU_EVENT_SEL); -- cgit v0.10.2 From 3249bce459ff0bb7c1621b00a8e2d6afe24c53bb Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Thu, 11 Aug 2016 12:00:36 +0100 Subject: bus: arm-ccn: Add missing event attribute exclusions for host/guest CCN PMUs have no knowledge into VM-related origins of the memory traffic, therefore can't handle requests for host-only or guest-only events. Added appropriate exclusions (they should have been there from the beginning). This required changing the error code returned, as the userspace tool only re-negotiates the options (exclude_guest is true by default) only for EINVAL. Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index ddb65c1..02f81e3 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -745,9 +745,10 @@ static int arm_ccn_pmu_event_init(struct perf_event *event) if (has_branch_stack(event) || event->attr.exclude_user || event->attr.exclude_kernel || event->attr.exclude_hv || - event->attr.exclude_idle) { + event->attr.exclude_idle || event->attr.exclude_host || + event->attr.exclude_guest) { dev_warn(ccn->dev, "Can't exclude execution levels!\n"); - return -EOPNOTSUPP; + return -EINVAL; } if (event->cpu < 0) { -- cgit v0.10.2 From b63bebe2355cf2632a2979fd2982c88d080c44b6 Mon Sep 17 00:00:00 2001 From: Vladimir Murzin Date: Wed, 10 Aug 2016 10:49:42 +0100 Subject: arm64: KVM: remove misleading comment on pmu status Comment about how PMU access is handled is not relavant since v4.6 where proper PMU support was added in. Signed-off-by: Vladimir Murzin Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index b0b225c..af5ea86 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -823,14 +823,6 @@ static bool access_pmuserenr(struct kvm_vcpu *vcpu, struct sys_reg_params *p, * Architected system registers. * Important: Must be sorted ascending by Op0, Op1, CRn, CRm, Op2 * - * We could trap ID_DFR0 and tell the guest we don't support performance - * monitoring. Unfortunately the patch to make the kernel check ID_DFR0 was - * NAKed, so it will read the PMCR anyway. - * - * Therefore we tell the guest we have 0 counters. Unfortunately, we - * must always support PMCCNTR (the cycle counter): we just RAZ/WI for - * all PM registers, which doesn't crash the guest kernel at least. - * * Debug handling: We do trap most, if not all debug related system * registers. The implementation is good enough to ensure that a guest * can use these with minimal performance degradation. The drawback is -- cgit v0.10.2 From f7f6f2d94f0027242ddfd665289b107a873fde43 Mon Sep 17 00:00:00 2001 From: Vladimir Murzin Date: Wed, 10 Aug 2016 10:49:43 +0100 Subject: arm64: KVM: report configured SRE value to 32-bit world After commit b34f2bc ("arm64: KVM: Make ICC_SRE_EL1 access return the configured SRE value") we report SRE value to 64-bit guest, but 32-bit one still handled as RAZ/WI what leads to funny promise we do not keep: "GICv3: GIC: unable to set SRE (disabled at EL2), panic ahead" Instead, return the actual value of the ICC_SRE_EL1 register that the guest should see. [ Tweaked commit message - Christoffer ] Signed-off-by: Vladimir Murzin Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index af5ea86..e51367d 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1352,7 +1352,7 @@ static const struct sys_reg_desc cp15_regs[] = { { Op1( 0), CRn(10), CRm( 3), Op2( 1), access_vm_reg, NULL, c10_AMAIR1 }, /* ICC_SRE */ - { Op1( 0), CRn(12), CRm(12), Op2( 5), trap_raz_wi }, + { Op1( 0), CRn(12), CRm(12), Op2( 5), access_gic_sre }, { Op1( 0), CRn(13), CRm( 0), Op2( 1), access_vm_reg, NULL, c13_CID }, -- cgit v0.10.2 From cea8aa3a93d1734816e1e3f7b118e1dddf3f4aaa Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 17 Aug 2016 14:07:46 +0200 Subject: regulator: Change Krzysztof Kozlowski's email to kernel.org Change my email address to kernel.org instead of Samsung one for the purpose of any future contact. The copyrights remain untouched and are attributed to Samsung. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown diff --git a/drivers/regulator/max14577-regulator.c b/drivers/regulator/max14577-regulator.c index b2daa66..c9ff261 100644 --- a/drivers/regulator/max14577-regulator.c +++ b/drivers/regulator/max14577-regulator.c @@ -2,7 +2,7 @@ * max14577.c - Regulator driver for the Maxim 14577/77836 * * Copyright (C) 2013,2014 Samsung Electronics - * Krzysztof Kozlowski + * Krzysztof Kozlowski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -331,7 +331,7 @@ static void __exit max14577_regulator_exit(void) } module_exit(max14577_regulator_exit); -MODULE_AUTHOR("Krzysztof Kozlowski "); +MODULE_AUTHOR("Krzysztof Kozlowski "); MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:max14577-regulator"); diff --git a/drivers/regulator/max77693-regulator.c b/drivers/regulator/max77693-regulator.c index de730fd..cfbb951 100644 --- a/drivers/regulator/max77693-regulator.c +++ b/drivers/regulator/max77693-regulator.c @@ -3,7 +3,7 @@ * * Copyright (C) 2013-2015 Samsung Electronics * Jonghwa Lee - * Krzysztof Kozlowski + * Krzysztof Kozlowski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -314,5 +314,5 @@ module_exit(max77693_pmic_cleanup); MODULE_DESCRIPTION("MAXIM 77693/77843 regulator driver"); MODULE_AUTHOR("Jonghwa Lee "); -MODULE_AUTHOR("Krzysztof Kozlowski "); +MODULE_AUTHOR("Krzysztof Kozlowski "); MODULE_LICENSE("GPL"); -- cgit v0.10.2 From 568ac888215c7fb2fabe8ea739b00ec3c1f5d440 Mon Sep 17 00:00:00 2001 From: Balbir Singh Date: Wed, 10 Aug 2016 15:43:06 -0400 Subject: cgroup: reduce read locked section of cgroup_threadgroup_rwsem during fork cgroup_threadgroup_rwsem is acquired in read mode during process exit and fork. It is also grabbed in write mode during __cgroups_proc_write(). I've recently run into a scenario with lots of memory pressure and OOM and I am beginning to see systemd __switch_to+0x1f8/0x350 __schedule+0x30c/0x990 schedule+0x48/0xc0 percpu_down_write+0x114/0x170 __cgroup_procs_write.isra.12+0xb8/0x3c0 cgroup_file_write+0x74/0x1a0 kernfs_fop_write+0x188/0x200 __vfs_write+0x6c/0xe0 vfs_write+0xc0/0x230 SyS_write+0x6c/0x110 system_call+0x38/0xb4 This thread is waiting on the reader of cgroup_threadgroup_rwsem to exit. The reader itself is under memory pressure and has gone into reclaim after fork. There are times the reader also ends up waiting on oom_lock as well. __switch_to+0x1f8/0x350 __schedule+0x30c/0x990 schedule+0x48/0xc0 jbd2_log_wait_commit+0xd4/0x180 ext4_evict_inode+0x88/0x5c0 evict+0xf8/0x2a0 dispose_list+0x50/0x80 prune_icache_sb+0x6c/0x90 super_cache_scan+0x190/0x210 shrink_slab.part.15+0x22c/0x4c0 shrink_zone+0x288/0x3c0 do_try_to_free_pages+0x1dc/0x590 try_to_free_pages+0xdc/0x260 __alloc_pages_nodemask+0x72c/0xc90 alloc_pages_current+0xb4/0x1a0 page_table_alloc+0xc0/0x170 __pte_alloc+0x58/0x1f0 copy_page_range+0x4ec/0x950 copy_process.isra.5+0x15a0/0x1870 _do_fork+0xa8/0x4b0 ppc_clone+0x8/0xc In the meanwhile, all processes exiting/forking are blocked almost stalling the system. This patch moves the threadgroup_change_begin from before cgroup_fork() to just before cgroup_canfork(). There is no nee to worry about threadgroup changes till the task is actually added to the threadgroup. This avoids having to call reclaim with cgroup_threadgroup_rwsem held. tj: Subject and description edits. Signed-off-by: Balbir Singh Acked-by: Zefan Li Cc: Oleg Nesterov Cc: Andrew Morton Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Tejun Heo diff --git a/kernel/fork.c b/kernel/fork.c index 52e725d4..aaf7823 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1404,7 +1404,6 @@ static struct task_struct *copy_process(unsigned long clone_flags, p->real_start_time = ktime_get_boot_ns(); p->io_context = NULL; p->audit_context = NULL; - threadgroup_change_begin(current); cgroup_fork(p); #ifdef CONFIG_NUMA p->mempolicy = mpol_dup(p->mempolicy); @@ -1556,6 +1555,7 @@ static struct task_struct *copy_process(unsigned long clone_flags, INIT_LIST_HEAD(&p->thread_group); p->task_works = NULL; + threadgroup_change_begin(current); /* * Ensure that the cgroup subsystem policies allow the new process to be * forked. It should be noted the the new process's css_set can be changed @@ -1656,6 +1656,7 @@ static struct task_struct *copy_process(unsigned long clone_flags, bad_fork_cancel_cgroup: cgroup_cancel_fork(p); bad_fork_free_pid: + threadgroup_change_end(current); if (pid != &init_struct_pid) free_pid(pid); bad_fork_cleanup_thread: @@ -1688,7 +1689,6 @@ bad_fork_cleanup_policy: mpol_put(p->mempolicy); bad_fork_cleanup_threadgroup_lock: #endif - threadgroup_change_end(current); delayacct_tsk_free(p); bad_fork_cleanup_count: atomic_dec(&p->cred->user->processes); -- cgit v0.10.2 From cfee6b5874654fe4e7388bc3112d3afb76cd8b9e Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 16 Aug 2016 10:05:15 +0800 Subject: ARM: imx6ul: populates platform device at .init_machine At imx6ul_init_machine, it calls imx6ul_pm_init which needs to find platform device for ocram, but the default populate platform device is at of_platform_default_populate_init, which is located at arch_initcall_sync, and called later than arch_initcall (.init_machine is located at that). So below warning message will be showed during boots up: imx6q_suspend_init: failed to find ocram device! imx6_pm_common_init: No DDR LPM support with suspend -19! Due to lack of ocram device, the suspend mode "mem" which needs ocram to store suspend routine code is invalid. This commit populates platform device before imx6ul_pm_init like other imx6 platforms do, and the suspend mode "mem" can work successfully. Signed-off-by: Peter Chen Fixes: 850bea2335e4 ("arm: Remove unnecessary of_platform_populate with default match table") Cc: Anson Huang Cc: Fabio Estevam Cc: Kefeng Wang Cc: Rob Herring Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo diff --git a/arch/arm/mach-imx/mach-imx6ul.c b/arch/arm/mach-imx/mach-imx6ul.c index 5d9bfab..6bb7d9c 100644 --- a/arch/arm/mach-imx/mach-imx6ul.c +++ b/arch/arm/mach-imx/mach-imx6ul.c @@ -64,6 +64,7 @@ static void __init imx6ul_init_machine(void) if (parent == NULL) pr_warn("failed to initialize soc device\n"); + of_platform_default_populate(NULL, NULL, parent); imx6ul_enet_init(); imx_anatop_init(); imx6ul_pm_init(); -- cgit v0.10.2 From e77e6ff502ea3d193872b5b9033bfd9717b36447 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Mon, 15 Aug 2016 21:50:35 +0800 Subject: netfilter: conntrack: do not dump other netns's conntrack entries via proc We should skip the conntracks that belong to a different namespace, otherwise other unrelated netns's conntrack entries will be dumped via /proc/net/nf_conntrack. Fixes: 56d52d4892d0 ("netfilter: conntrack: use a single hashtable for all namespaces") Signed-off-by: Liping Zhang Reviewed-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index 958a145..9f267c3 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -205,6 +205,7 @@ static int ct_seq_show(struct seq_file *s, void *v) struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash); const struct nf_conntrack_l3proto *l3proto; const struct nf_conntrack_l4proto *l4proto; + struct net *net = seq_file_net(s); int ret = 0; NF_CT_ASSERT(ct); @@ -215,6 +216,9 @@ static int ct_seq_show(struct seq_file *s, void *v) if (NF_CT_DIRECTION(hash)) goto release; + if (!net_eq(nf_ct_net(ct), net)) + goto release; + l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); NF_CT_ASSERT(l3proto); l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); -- cgit v0.10.2 From 2497b84625466dc57b8c3a40cd41a659fe04cca6 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sat, 13 Aug 2016 22:46:04 +0800 Subject: netfilter: nfnetlink_log: add "nf-logger-3-1" module alias name Otherwise, if nfnetlink_log.ko is not loaded, we cannot add rules to log packets to the userspace when we specify it with arp family, such as: # nft add rule arp filter input log group 0 :1:1-37: Error: Could not process rule: No such file or directory add rule arp filter input log group 0 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index cbcfdfb..6577db5 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -1147,6 +1147,7 @@ MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_ULOG); MODULE_ALIAS_NF_LOGGER(AF_INET, 1); MODULE_ALIAS_NF_LOGGER(AF_INET6, 1); MODULE_ALIAS_NF_LOGGER(AF_BRIDGE, 1); +MODULE_ALIAS_NF_LOGGER(3, 1); /* NFPROTO_ARP */ module_init(nfnetlink_log_init); module_exit(nfnetlink_log_fini); -- cgit v0.10.2 From 326dce0734b63c3b82b6a88e5645eab8b54c6692 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2016 18:50:42 +0200 Subject: MAINTAINERS: Switch to kernel.org account for Krzysztof Kozlowski Change my email address to kernel.org account instead of Samsung one. Add Bartlomiej Zolnierkiewicz as a co-maintainer of Maxim and Samsung PMIC drivers. These are used on many of our boards along with Exynos SoCs and Samsung R&D Institute Poland can still take care of them. Signed-off-by: Krzysztof Kozlowski Cc: Kukjin Kim Cc: linux-samsung-soc@vger.kernel.org Cc: Bartlomiej Zolnierkiewicz Acked-by: Sylwester Nawrocki Acked-by: Kukjin Kim diff --git a/.mailmap b/.mailmap index 2a91c14..b18912c 100644 --- a/.mailmap +++ b/.mailmap @@ -88,6 +88,7 @@ Kay Sievers Kenneth W Chen Konstantin Khlebnikov Koushik +Krzysztof Kozlowski Krzysztof Kozlowski Kuninori Morimoto Leonid I Ananiev diff --git a/MAINTAINERS b/MAINTAINERS index 20bb1d0..c9cd8d3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1613,7 +1613,7 @@ N: rockchip ARM/SAMSUNG EXYNOS ARM ARCHITECTURES M: Kukjin Kim -M: Krzysztof Kozlowski +M: Krzysztof Kozlowski L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers) S: Maintained @@ -7448,7 +7448,8 @@ F: Documentation/devicetree/bindings/sound/max9860.txt F: sound/soc/codecs/max9860.* MAXIM MUIC CHARGER DRIVERS FOR EXYNOS BASED BOARDS -M: Krzysztof Kozlowski +M: Krzysztof Kozlowski +M: Bartlomiej Zolnierkiewicz L: linux-pm@vger.kernel.org S: Supported F: drivers/power/max14577_charger.c @@ -7464,7 +7465,8 @@ F: include/dt-bindings/*/*max77802.h MAXIM PMIC AND MUIC DRIVERS FOR EXYNOS BASED BOARDS M: Chanwoo Choi -M: Krzysztof Kozlowski +M: Krzysztof Kozlowski +M: Bartlomiej Zolnierkiewicz L: linux-kernel@vger.kernel.org S: Supported F: drivers/*/max14577*.c @@ -9230,7 +9232,7 @@ F: drivers/pinctrl/sh-pfc/ PIN CONTROLLER - SAMSUNG M: Tomasz Figa -M: Krzysztof Kozlowski +M: Krzysztof Kozlowski M: Sylwester Nawrocki L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers) @@ -10163,7 +10165,7 @@ S: Maintained F: drivers/platform/x86/samsung-laptop.c SAMSUNG AUDIO (ASoC) DRIVERS -M: Krzysztof Kozlowski +M: Krzysztof Kozlowski M: Sangbeom Kim M: Sylwester Nawrocki L: alsa-devel@alsa-project.org (moderated for non-subscribers) @@ -10178,7 +10180,8 @@ F: drivers/video/fbdev/s3c-fb.c SAMSUNG MULTIFUNCTION PMIC DEVICE DRIVERS M: Sangbeom Kim -M: Krzysztof Kozlowski +M: Krzysztof Kozlowski +M: Bartlomiej Zolnierkiewicz L: linux-kernel@vger.kernel.org L: linux-samsung-soc@vger.kernel.org S: Supported -- cgit v0.10.2 From 207efcd2b55e0460dfee35663fbb3d05efad990a Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Fri, 12 Aug 2016 13:42:40 +0800 Subject: md: remove obsolete ret in md_start_sync The ret is not needed anymore since we have already move resync_start into md_do_sync in commit 41a9a0d. Reviewed-by: NeilBrown Signed-off-by: Guoqing Jiang Signed-off-by: Shaohua Li diff --git a/drivers/md/md.c b/drivers/md/md.c index d750b52..19d8e23 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8278,16 +8278,13 @@ no_add: static void md_start_sync(struct work_struct *ws) { struct mddev *mddev = container_of(ws, struct mddev, del_work); - int ret = 0; mddev->sync_thread = md_register_thread(md_do_sync, mddev, "resync"); if (!mddev->sync_thread) { - if (!(mddev_is_clustered(mddev) && ret == -EAGAIN)) - printk(KERN_ERR "%s: could not start resync" - " thread...\n", - mdname(mddev)); + printk(KERN_ERR "%s: could not start resync thread...\n", + mdname(mddev)); /* leave the spares where they are, it shouldn't hurt */ clear_bit(MD_RECOVERY_SYNC, &mddev->recovery); clear_bit(MD_RECOVERY_RESHAPE, &mddev->recovery); -- cgit v0.10.2 From c622ca543bff8e73efacf4dafa0cc9851ecea511 Mon Sep 17 00:00:00 2001 From: Artur Paszkiewicz Date: Tue, 16 Aug 2016 14:26:08 +0200 Subject: md: don't print the same repeated messages about delayed sync operation This fixes a long-standing bug that caused a flood of messages like: "md: delaying data-check of md1 until md2 has finished (they share one or more physical units)" It can be reproduced like this: 1. Create at least 3 raid1 arrays on a pair of disks, each on different partitions. 2. Request a sync operation like 'check' or 'repair' on 2 arrays by writing to their md/sync_action attribute files. One operation should start and one should be delayed and a message like the above will be printed. 3. Issue a write to the third array. Each write will cause 2 copies of the message to be printed. This happens when wake_up(&resync_wait) is called, usually by md_check_recovery(). Then the delayed sync thread again prints the message and is put to sleep. This patch adds a check in md_do_sync() to prevent printing this message more than once for the same pair of devices. Reported-by: Sven Koehler Link: https://bugzilla.kernel.org/show_bug.cgi?id=151801 Signed-off-by: Artur Paszkiewicz Signed-off-by: Shaohua Li diff --git a/drivers/md/md.c b/drivers/md/md.c index 19d8e23..cc25cbc 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7865,6 +7865,7 @@ void md_do_sync(struct md_thread *thread) */ do { + int mddev2_minor = -1; mddev->curr_resync = 2; try_again: @@ -7894,10 +7895,14 @@ void md_do_sync(struct md_thread *thread) prepare_to_wait(&resync_wait, &wq, TASK_INTERRUPTIBLE); if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery) && mddev2->curr_resync >= mddev->curr_resync) { - printk(KERN_INFO "md: delaying %s of %s" - " until %s has finished (they" - " share one or more physical units)\n", - desc, mdname(mddev), mdname(mddev2)); + if (mddev2_minor != mddev2->md_minor) { + mddev2_minor = mddev2->md_minor; + printk(KERN_INFO "md: delaying %s of %s" + " until %s has finished (they" + " share one or more physical units)\n", + desc, mdname(mddev), + mdname(mddev2)); + } mddev_put(mddev2); if (signal_pending(current)) flush_signals(current); -- cgit v0.10.2 From 059e232089e45b0befc9933d31209c225e08b426 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 9 Aug 2016 07:50:44 +0100 Subject: irqchip/gic: Allow self-SGIs for SMP on UP configurations On systems where a single CPU is present, the GIC may not support having SGIs delivered to a target list. In that case, we use the self-SGI mechanism to allow the interrupt to be delivered locally. Tested-by: Fabio Estevam Signed-off-by: Marc Zyngier diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index c2cab57..390fac5 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -769,6 +769,13 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq) int cpu; unsigned long flags, map = 0; + if (unlikely(nr_cpu_ids == 1)) { + /* Only one CPU? let's do a self-IPI... */ + writel_relaxed(2 << 24 | irq, + gic_data_dist_base(&gic_data[0]) + GIC_DIST_SOFTINT); + return; + } + raw_spin_lock_irqsave(&irq_controller_lock, flags); /* Convert our logical CPU mask into a physical one. */ -- cgit v0.10.2 From ccd9432a5c85f35df7b491a1b701560d247466a5 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Wed, 17 Aug 2016 13:49:19 +0100 Subject: irqchip/gicv3: Remove disabling redistributor and group1 non-secure interrupts As per the GICv3 specification, to power down a processor using GICv3 and allow automatic power-on if an interrupt must be sent to a processor, software must set Enable to zero for all interrupt groups(by writing to GICC_CTLR or ICC_IGRPEN{0,1}_EL1/3 as appropriate. When commit 3708d52fc6bb ("irqchip: gic-v3: Implement CPU PM notifier") was introduced there were no firmware implementations(in particular PSCI) handling this. Linux kernel may not be aware of the CPU power state details and might fail to identify the power states that require quiescing the CPU interface. Even if it can be aware of those details, it can't determine which CPU power state have been triggered at the platform level and how the power control is implemented. This patch make disabling redistributor and group1 non-secure interrupts in the power down path and re-enabling of redistributor in the power-up path conditional. It will be handled in the kernel if and only if the non-secure accesses are permitted to access and modify control registers. It is left to the platform implementation otherwise. Cc: Marc Zyngier Cc: Lorenzo Pieralisi Cc: Thomas Gleixner Cc: Jason Cooper Tested-by: Christopher Covington Signed-off-by: Sudeep Holla Signed-off-by: Marc Zyngier diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 6fc56c3..ede5672 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -667,13 +667,20 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, #endif #ifdef CONFIG_CPU_PM +/* Check whether it's single security state view */ +static bool gic_dist_security_disabled(void) +{ + return readl_relaxed(gic_data.dist_base + GICD_CTLR) & GICD_CTLR_DS; +} + static int gic_cpu_pm_notifier(struct notifier_block *self, unsigned long cmd, void *v) { if (cmd == CPU_PM_EXIT) { - gic_enable_redist(true); + if (gic_dist_security_disabled()) + gic_enable_redist(true); gic_cpu_sys_reg_init(); - } else if (cmd == CPU_PM_ENTER) { + } else if (cmd == CPU_PM_ENTER && gic_dist_security_disabled()) { gic_write_grpen1(0); gic_enable_redist(false); } -- cgit v0.10.2 From aca300183ed4f723837f6619facff0890c46d313 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sat, 13 Aug 2016 23:13:02 +0800 Subject: netfilter: nfnetlink_acct: report overquota to the right netns We should report the over quota message to the right net namespace instead of the init netns. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/include/linux/netfilter/nfnetlink_acct.h b/include/linux/netfilter/nfnetlink_acct.h index 80ca889..664da00 100644 --- a/include/linux/netfilter/nfnetlink_acct.h +++ b/include/linux/netfilter/nfnetlink_acct.h @@ -15,6 +15,6 @@ struct nf_acct; struct nf_acct *nfnl_acct_find_get(struct net *net, const char *filter_name); void nfnl_acct_put(struct nf_acct *acct); void nfnl_acct_update(const struct sk_buff *skb, struct nf_acct *nfacct); -extern int nfnl_acct_overquota(const struct sk_buff *skb, - struct nf_acct *nfacct); +int nfnl_acct_overquota(struct net *net, const struct sk_buff *skb, + struct nf_acct *nfacct); #endif /* _NFNL_ACCT_H */ diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c index 1b4de4b..796605b 100644 --- a/net/netfilter/nfnetlink_acct.c +++ b/net/netfilter/nfnetlink_acct.c @@ -443,7 +443,7 @@ void nfnl_acct_update(const struct sk_buff *skb, struct nf_acct *nfacct) } EXPORT_SYMBOL_GPL(nfnl_acct_update); -static void nfnl_overquota_report(struct nf_acct *nfacct) +static void nfnl_overquota_report(struct net *net, struct nf_acct *nfacct) { int ret; struct sk_buff *skb; @@ -458,11 +458,12 @@ static void nfnl_overquota_report(struct nf_acct *nfacct) kfree_skb(skb); return; } - netlink_broadcast(init_net.nfnl, skb, 0, NFNLGRP_ACCT_QUOTA, + netlink_broadcast(net->nfnl, skb, 0, NFNLGRP_ACCT_QUOTA, GFP_ATOMIC); } -int nfnl_acct_overquota(const struct sk_buff *skb, struct nf_acct *nfacct) +int nfnl_acct_overquota(struct net *net, const struct sk_buff *skb, + struct nf_acct *nfacct) { u64 now; u64 *quota; @@ -480,7 +481,7 @@ int nfnl_acct_overquota(const struct sk_buff *skb, struct nf_acct *nfacct) if (now >= *quota && !test_and_set_bit(NFACCT_OVERQUOTA_BIT, &nfacct->flags)) { - nfnl_overquota_report(nfacct); + nfnl_overquota_report(net, nfacct); } return ret; diff --git a/net/netfilter/xt_nfacct.c b/net/netfilter/xt_nfacct.c index 3048a7e..cf32759 100644 --- a/net/netfilter/xt_nfacct.c +++ b/net/netfilter/xt_nfacct.c @@ -26,7 +26,7 @@ static bool nfacct_mt(const struct sk_buff *skb, struct xt_action_param *par) nfnl_acct_update(skb, info->nfacct); - overquota = nfnl_acct_overquota(skb, info->nfacct); + overquota = nfnl_acct_overquota(par->net, skb, info->nfacct); return overquota == NFACCT_UNDERQUOTA ? false : true; } -- cgit v0.10.2 From dcbe35909c8426e1ace74b4b99c4cb403cdaca89 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 17 Aug 2016 09:56:46 -0700 Subject: netfilter: tproxy: properly refcount tcp listeners inet_lookup_listener() and inet6_lookup_listener() no longer take a reference on the found listener. This minimal patch adds back the refcounting, but we might do this differently in net-next later. Fixes: 3b24d854cb35 ("tcp/dccp: do not touch listener sk_refcnt under synflood") Reported-and-tested-by: Denys Fedoryshchenko Signed-off-by: Eric Dumazet Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c index 7f4414d..663c4c3 100644 --- a/net/netfilter/xt_TPROXY.c +++ b/net/netfilter/xt_TPROXY.c @@ -127,6 +127,8 @@ nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb, void *hp, daddr, dport, in->ifindex); + if (sk && !atomic_inc_not_zero(&sk->sk_refcnt)) + sk = NULL; /* NOTE: we return listeners even if bound to * 0.0.0.0, those are filtered out in * xt_socket, since xt_TPROXY needs 0 bound @@ -195,6 +197,8 @@ nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff, void *hp, daddr, ntohs(dport), in->ifindex); + if (sk && !atomic_inc_not_zero(&sk->sk_refcnt)) + sk = NULL; /* NOTE: we return listeners even if bound to * 0.0.0.0, those are filtered out in * xt_socket, since xt_TPROXY needs 0 bound -- cgit v0.10.2 From b825b44c4ef4dabfdaf4e82db2263d377ac45d67 Mon Sep 17 00:00:00 2001 From: Jay Freyensee Date: Wed, 17 Aug 2016 15:00:25 -0700 Subject: nvmet-rdma: +1 to *queue_size from hsqsize/hrqsize The host will be sending sqsize 0-based hsqsize value, the target need to be adjusted as well. Signed-off-by: Jay Freyensee Reviewed-by: Sagi Grimberg Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c index 5de8d0a..1cbe6e0 100644 --- a/drivers/nvme/target/rdma.c +++ b/drivers/nvme/target/rdma.c @@ -1004,10 +1004,10 @@ nvmet_rdma_parse_cm_connect_req(struct rdma_conn_param *conn, queue->host_qid = le16_to_cpu(req->qid); /* - * req->hsqsize corresponds to our recv queue size + * req->hsqsize corresponds to our recv queue size plus 1 * req->hrqsize corresponds to our send queue size */ - queue->recv_queue_size = le16_to_cpu(req->hsqsize); + queue->recv_queue_size = le16_to_cpu(req->hsqsize) + 1; queue->send_queue_size = le16_to_cpu(req->hrqsize); if (!queue->host_qid && queue->recv_queue_size > NVMF_AQ_DEPTH) -- cgit v0.10.2 From f994d9dc28bc27353acde2caaf718222d92a3e24 Mon Sep 17 00:00:00 2001 From: Jay Freyensee Date: Wed, 17 Aug 2016 15:00:26 -0700 Subject: fabrics: define admin sqsize min default, per spec Upon admin queue connect(), the rdma qp was being set based on NVMF_AQ_DEPTH. However, the fabrics layer was using the sqsize field value set for I/O queues for the admin queue, which threw the nvme layer and rdma layer off-whack: root@fedora23-fabrics-host1 nvmf]# dmesg [ 3507.798642] nvme_fabrics: nvmf_connect_admin_queue():admin sqsize being sent is: 128 [ 3507.798858] nvme nvme0: creating 16 I/O queues. [ 3507.896407] nvme nvme0: new ctrl: NQN "nullside-nqn", addr 192.168.1.3:4420 Thus, to have a different admin queue value, we use NVMF_AQ_DEPTH for connect() and RDMA private data as the minimum depth specified in the NVMe-over-Fabrics 1.0 spec (and in that RDMA private data we treat hrqsize as 1's-based value, per current understanding of the fabrics spec). Reported-by: Daniel Verkamp Signed-off-by: Jay Freyensee Reviewed-by: Daniel Verkamp Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index dc99676..020302c 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -363,7 +363,14 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl) cmd.connect.opcode = nvme_fabrics_command; cmd.connect.fctype = nvme_fabrics_type_connect; cmd.connect.qid = 0; - cmd.connect.sqsize = cpu_to_le16(ctrl->sqsize); + + /* + * fabrics spec sets a minimum of depth 32 for admin queue, + * so set the queue with this depth always until + * justification otherwise. + */ + cmd.connect.sqsize = cpu_to_le16(NVMF_AQ_DEPTH - 1); + /* * Set keep-alive timeout in seconds granularity (ms * 1000) * and add a grace period for controller kato enforcement diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 9c69393..d44809e 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -1278,8 +1278,17 @@ static int nvme_rdma_route_resolved(struct nvme_rdma_queue *queue) priv.recfmt = cpu_to_le16(NVME_RDMA_CM_FMT_1_0); priv.qid = cpu_to_le16(nvme_rdma_queue_idx(queue)); - priv.hrqsize = cpu_to_le16(queue->queue_size); - priv.hsqsize = cpu_to_le16(queue->queue_size); + /* + * set the admin queue depth to the minimum size + * specified by the Fabrics standard. + */ + if (priv.qid == 0) { + priv.hrqsize = cpu_to_le16(NVMF_AQ_DEPTH); + priv.hsqsize = cpu_to_le16(NVMF_AQ_DEPTH - 1); + } else { + priv.hrqsize = cpu_to_le16(queue->queue_size); + priv.hsqsize = cpu_to_le16(queue->queue_size); + } ret = rdma_connect(queue->cm_id, ¶m); if (ret) { -- cgit v0.10.2 From c5af8654c422cfdd8480be3a244748e18cace6c5 Mon Sep 17 00:00:00 2001 From: Jay Freyensee Date: Wed, 17 Aug 2016 15:00:27 -0700 Subject: nvme-rdma: fix sqsize/hsqsize per spec Per NVMe-over-Fabrics 1.0 spec, sqsize is represented as a 0-based value. Also per spec, the RDMA binding values shall be set to sqsize, which makes hsqsize 0-based values. Thus, the sqsize during NVMf connect() is now: [root@fedora23-fabrics-host1 for-48]# dmesg [ 318.720645] nvme_fabrics: nvmf_connect_admin_queue(): sqsize for admin queue: 31 [ 318.720884] nvme nvme0: creating 16 I/O queues. [ 318.810114] nvme_fabrics: nvmf_connect_io_queue(): sqsize for i/o queue: 127 Finally, current interpretation implies hrqsize is 1's based so set it appropriately. Reported-by: Daniel Verkamp Signed-off-by: Jay Freyensee Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index d44809e..c133256 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -645,7 +645,8 @@ static int nvme_rdma_init_io_queues(struct nvme_rdma_ctrl *ctrl) int i, ret; for (i = 1; i < ctrl->queue_count; i++) { - ret = nvme_rdma_init_queue(ctrl, i, ctrl->ctrl.sqsize); + ret = nvme_rdma_init_queue(ctrl, i, + ctrl->ctrl.opts->queue_size); if (ret) { dev_info(ctrl->ctrl.device, "failed to initialize i/o queue: %d\n", ret); @@ -1286,8 +1287,13 @@ static int nvme_rdma_route_resolved(struct nvme_rdma_queue *queue) priv.hrqsize = cpu_to_le16(NVMF_AQ_DEPTH); priv.hsqsize = cpu_to_le16(NVMF_AQ_DEPTH - 1); } else { + /* + * current interpretation of the fabrics spec + * is at minimum you make hrqsize sqsize+1, or a + * 1's based representation of sqsize. + */ priv.hrqsize = cpu_to_le16(queue->queue_size); - priv.hsqsize = cpu_to_le16(queue->queue_size); + priv.hsqsize = cpu_to_le16(queue->ctrl->ctrl.sqsize); } ret = rdma_connect(queue->cm_id, ¶m); @@ -1825,7 +1831,7 @@ static int nvme_rdma_create_io_queues(struct nvme_rdma_ctrl *ctrl) memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set)); ctrl->tag_set.ops = &nvme_rdma_mq_ops; - ctrl->tag_set.queue_depth = ctrl->ctrl.sqsize; + ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size; ctrl->tag_set.reserved_tags = 1; /* fabric connect */ ctrl->tag_set.numa_node = NUMA_NO_NODE; ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; @@ -1923,7 +1929,7 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev, spin_lock_init(&ctrl->lock); ctrl->queue_count = opts->nr_io_queues + 1; /* +1 for admin queue */ - ctrl->ctrl.sqsize = opts->queue_size; + ctrl->ctrl.sqsize = opts->queue_size - 1; ctrl->ctrl.kato = opts->kato; ret = -ENOMEM; -- cgit v0.10.2 From eadb7cf44105ae8250f0d638dc880c3ed511c4e2 Mon Sep 17 00:00:00 2001 From: Jay Freyensee Date: Wed, 17 Aug 2016 15:00:28 -0700 Subject: nvme-loop: set sqsize to 0-based value, per spec Signed-off-by: Jay Freyensee Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index 7affd40..395e60d 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -556,7 +556,7 @@ static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl) memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set)); ctrl->tag_set.ops = &nvme_loop_mq_ops; - ctrl->tag_set.queue_depth = ctrl->ctrl.sqsize; + ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size; ctrl->tag_set.reserved_tags = 1; /* fabric connect */ ctrl->tag_set.numa_node = NUMA_NO_NODE; ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; @@ -620,7 +620,7 @@ static struct nvme_ctrl *nvme_loop_create_ctrl(struct device *dev, ret = -ENOMEM; - ctrl->ctrl.sqsize = opts->queue_size; + ctrl->ctrl.sqsize = opts->queue_size - 1; ctrl->ctrl.kato = opts->kato; ctrl->queues = kcalloc(opts->nr_io_queues + 1, sizeof(*ctrl->queues), -- cgit v0.10.2 From 2e365a703ea60de617287354ae63bf677e406feb Mon Sep 17 00:00:00 2001 From: Andi Shyti Date: Thu, 18 Aug 2016 16:25:55 +0900 Subject: MAINTAINERS: add myself as Samsung SPI maintainer Create a new entry for the Samsung SPI driver supported by the drivers/spi/spi-s3c* and remove it from its original place under "ARM/SAMSUNG EXYNOS ARM ARCHITECTURES". The original maintainership inherited from the Samsung Exynos ARM Architecture is kept as it was (i.e. Kukjin and Krzysztof), I will help and co-maintain the driver. Signed-off-by: Andi Shyti Acked-by: Krzysztof Kozlowski Signed-off-by: Mark Brown diff --git a/MAINTAINERS b/MAINTAINERS index 20bb1d0..5051c2f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1633,7 +1633,6 @@ F: drivers/*/*s3c64xx* F: drivers/*/*s5pv210* F: drivers/memory/samsung/* F: drivers/soc/samsung/* -F: drivers/spi/spi-s3c* F: Documentation/arm/Samsung/ F: Documentation/devicetree/bindings/arm/samsung/ F: Documentation/devicetree/bindings/sram/samsung-sram.txt @@ -10237,6 +10236,17 @@ S: Supported L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers) F: drivers/clk/samsung/ +SAMSUNG SPI DRIVERS +M: Kukjin Kim +M: Krzysztof Kozlowski +M: Andi Shyti +L: linux-spi@vger.kernel.org +L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers) +S: Maintained +F: Documentation/devicetree/bindings/spi/spi-samsung.txt +F: drivers/spi/spi-s3c* +F: include/linux/platform_data/spi-s3c64xx.h + SAMSUNG SXGBE DRIVERS M: Byungho An M: Girish K S -- cgit v0.10.2 From 815806e39bf6f7e7b34875d4a9609dbe76661782 Mon Sep 17 00:00:00 2001 From: Elaine Zhang Date: Thu, 18 Aug 2016 17:01:55 +0800 Subject: regmap: drop cache if the bus transfer error regmap_write ->_regmap_raw_write -->regcache_write first and than use map->bus->write to wirte i2c or spi But if the i2c or spi transfer failed, But the cache is updated, So if I use regmap_read will get the cache data which is not the real register value. Signed-off-by: Elaine Zhang Signed-off-by: Mark Brown diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 51fa7d6..25d26bb 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1474,6 +1474,8 @@ int _regmap_raw_write(struct regmap *map, unsigned int reg, ret = map->bus->write(map->bus_context, buf, len); kfree(buf); + } else if (ret != 0 && !map->cache_bypass && map->format.parse_val) { + regcache_drop_region(map, reg, reg + 1); } trace_regmap_hw_write_done(map, reg, val_len / map->format.val_bytes); -- cgit v0.10.2 From d048c098218e91ed0e10dfa1f0f80e2567fe4ef7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= Date: Mon, 8 Aug 2016 20:16:22 +0200 Subject: KVM: nVMX: fix msr bitmaps to prevent L2 from accessing L0 x2APIC MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit msr bitmap can be used to avoid a VM exit (interception) on guest MSR accesses. In some configurations of VMX controls, the guest can even directly access host's x2APIC MSRs. See SDM 29.5 VIRTUALIZING MSR-BASED APIC ACCESSES. L2 could read all L0's x2APIC MSRs and write TPR, EOI, and SELF_IPI. To do so, L1 would first trick KVM to disable all possible interceptions by enabling APICv features and then would turn those features off; nested_vmx_merge_msr_bitmap() only disabled interceptions, so VMX would not intercept previously enabled MSRs even though they were not safe with the new configuration. Correctly re-enabling interceptions is not enough as a second bug would still allow L1+L2 to access host's MSRs: msr bitmap was shared for all VMCSs, so L1 could trigger a race to get the desired combination of msr bitmap and VMX controls. This fix allocates a msr bitmap for every L1 VCPU, allows only safe x2APIC MSRs from L1's msr bitmap, and disables msr bitmaps if they would have to intercept everything anyway. Fixes: 3af18d9c5fe9 ("KVM: nVMX: Prepare for using hardware MSR bitmap") Reported-by: Jim Mattson Suggested-by: Wincy Van Reviewed-by: Wanpeng Li Signed-off-by: Radim Krčmář diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index a45d858..c66ac2c 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -435,6 +435,8 @@ struct nested_vmx { bool pi_pending; u16 posted_intr_nv; + unsigned long *msr_bitmap; + struct hrtimer preemption_timer; bool preemption_timer_expired; @@ -924,7 +926,6 @@ static unsigned long *vmx_msr_bitmap_legacy; static unsigned long *vmx_msr_bitmap_longmode; static unsigned long *vmx_msr_bitmap_legacy_x2apic; static unsigned long *vmx_msr_bitmap_longmode_x2apic; -static unsigned long *vmx_msr_bitmap_nested; static unsigned long *vmx_vmread_bitmap; static unsigned long *vmx_vmwrite_bitmap; @@ -2508,7 +2509,7 @@ static void vmx_set_msr_bitmap(struct kvm_vcpu *vcpu) unsigned long *msr_bitmap; if (is_guest_mode(vcpu)) - msr_bitmap = vmx_msr_bitmap_nested; + msr_bitmap = to_vmx(vcpu)->nested.msr_bitmap; else if (cpu_has_secondary_exec_ctrls() && (vmcs_read32(SECONDARY_VM_EXEC_CONTROL) & SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE)) { @@ -6363,13 +6364,6 @@ static __init int hardware_setup(void) if (!vmx_msr_bitmap_longmode_x2apic) goto out4; - if (nested) { - vmx_msr_bitmap_nested = - (unsigned long *)__get_free_page(GFP_KERNEL); - if (!vmx_msr_bitmap_nested) - goto out5; - } - vmx_vmread_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL); if (!vmx_vmread_bitmap) goto out6; @@ -6392,8 +6386,6 @@ static __init int hardware_setup(void) memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE); memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE); - if (nested) - memset(vmx_msr_bitmap_nested, 0xff, PAGE_SIZE); if (setup_vmcs_config(&vmcs_config) < 0) { r = -EIO; @@ -6529,9 +6521,6 @@ out8: out7: free_page((unsigned long)vmx_vmread_bitmap); out6: - if (nested) - free_page((unsigned long)vmx_msr_bitmap_nested); -out5: free_page((unsigned long)vmx_msr_bitmap_longmode_x2apic); out4: free_page((unsigned long)vmx_msr_bitmap_longmode); @@ -6557,8 +6546,6 @@ static __exit void hardware_unsetup(void) free_page((unsigned long)vmx_io_bitmap_a); free_page((unsigned long)vmx_vmwrite_bitmap); free_page((unsigned long)vmx_vmread_bitmap); - if (nested) - free_page((unsigned long)vmx_msr_bitmap_nested); free_kvm_area(); } @@ -6995,16 +6982,21 @@ static int handle_vmon(struct kvm_vcpu *vcpu) return 1; } + if (cpu_has_vmx_msr_bitmap()) { + vmx->nested.msr_bitmap = + (unsigned long *)__get_free_page(GFP_KERNEL); + if (!vmx->nested.msr_bitmap) + goto out_msr_bitmap; + } + vmx->nested.cached_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL); if (!vmx->nested.cached_vmcs12) - return -ENOMEM; + goto out_cached_vmcs12; if (enable_shadow_vmcs) { shadow_vmcs = alloc_vmcs(); - if (!shadow_vmcs) { - kfree(vmx->nested.cached_vmcs12); - return -ENOMEM; - } + if (!shadow_vmcs) + goto out_shadow_vmcs; /* mark vmcs as shadow */ shadow_vmcs->revision_id |= (1u << 31); /* init shadow vmcs */ @@ -7024,6 +7016,15 @@ static int handle_vmon(struct kvm_vcpu *vcpu) skip_emulated_instruction(vcpu); nested_vmx_succeed(vcpu); return 1; + +out_shadow_vmcs: + kfree(vmx->nested.cached_vmcs12); + +out_cached_vmcs12: + free_page((unsigned long)vmx->nested.msr_bitmap); + +out_msr_bitmap: + return -ENOMEM; } /* @@ -7098,6 +7099,10 @@ static void free_nested(struct vcpu_vmx *vmx) vmx->nested.vmxon = false; free_vpid(vmx->nested.vpid02); nested_release_vmcs12(vmx); + if (vmx->nested.msr_bitmap) { + free_page((unsigned long)vmx->nested.msr_bitmap); + vmx->nested.msr_bitmap = NULL; + } if (enable_shadow_vmcs) free_vmcs(vmx->nested.current_shadow_vmcs); kfree(vmx->nested.cached_vmcs12); @@ -9472,8 +9477,10 @@ static inline bool nested_vmx_merge_msr_bitmap(struct kvm_vcpu *vcpu, { int msr; struct page *page; - unsigned long *msr_bitmap; + unsigned long *msr_bitmap_l1; + unsigned long *msr_bitmap_l0 = to_vmx(vcpu)->nested.msr_bitmap; + /* This shortcut is ok because we support only x2APIC MSRs so far. */ if (!nested_cpu_has_virt_x2apic_mode(vmcs12)) return false; @@ -9482,63 +9489,37 @@ static inline bool nested_vmx_merge_msr_bitmap(struct kvm_vcpu *vcpu, WARN_ON(1); return false; } - msr_bitmap = (unsigned long *)kmap(page); - if (!msr_bitmap) { + msr_bitmap_l1 = (unsigned long *)kmap(page); + if (!msr_bitmap_l1) { nested_release_page_clean(page); WARN_ON(1); return false; } + memset(msr_bitmap_l0, 0xff, PAGE_SIZE); + if (nested_cpu_has_virt_x2apic_mode(vmcs12)) { if (nested_cpu_has_apic_reg_virt(vmcs12)) for (msr = 0x800; msr <= 0x8ff; msr++) nested_vmx_disable_intercept_for_msr( - msr_bitmap, - vmx_msr_bitmap_nested, + msr_bitmap_l1, msr_bitmap_l0, msr, MSR_TYPE_R); - /* TPR is allowed */ - nested_vmx_disable_intercept_for_msr(msr_bitmap, - vmx_msr_bitmap_nested, + + nested_vmx_disable_intercept_for_msr( + msr_bitmap_l1, msr_bitmap_l0, APIC_BASE_MSR + (APIC_TASKPRI >> 4), MSR_TYPE_R | MSR_TYPE_W); + if (nested_cpu_has_vid(vmcs12)) { - /* EOI and self-IPI are allowed */ nested_vmx_disable_intercept_for_msr( - msr_bitmap, - vmx_msr_bitmap_nested, + msr_bitmap_l1, msr_bitmap_l0, APIC_BASE_MSR + (APIC_EOI >> 4), MSR_TYPE_W); nested_vmx_disable_intercept_for_msr( - msr_bitmap, - vmx_msr_bitmap_nested, + msr_bitmap_l1, msr_bitmap_l0, APIC_BASE_MSR + (APIC_SELF_IPI >> 4), MSR_TYPE_W); } - } else { - /* - * Enable reading intercept of all the x2apic - * MSRs. We should not rely on vmcs12 to do any - * optimizations here, it may have been modified - * by L1. - */ - for (msr = 0x800; msr <= 0x8ff; msr++) - __vmx_enable_intercept_for_msr( - vmx_msr_bitmap_nested, - msr, - MSR_TYPE_R); - - __vmx_enable_intercept_for_msr( - vmx_msr_bitmap_nested, - APIC_BASE_MSR + (APIC_TASKPRI >> 4), - MSR_TYPE_W); - __vmx_enable_intercept_for_msr( - vmx_msr_bitmap_nested, - APIC_BASE_MSR + (APIC_EOI >> 4), - MSR_TYPE_W); - __vmx_enable_intercept_for_msr( - vmx_msr_bitmap_nested, - APIC_BASE_MSR + (APIC_SELF_IPI >> 4), - MSR_TYPE_W); } kunmap(page); nested_release_page_clean(page); @@ -9957,10 +9938,10 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) } if (cpu_has_vmx_msr_bitmap() && - exec_control & CPU_BASED_USE_MSR_BITMAPS) { - nested_vmx_merge_msr_bitmap(vcpu, vmcs12); - /* MSR_BITMAP will be set by following vmx_set_efer. */ - } else + exec_control & CPU_BASED_USE_MSR_BITMAPS && + nested_vmx_merge_msr_bitmap(vcpu, vmcs12)) + ; /* MSR_BITMAP will be set by following vmx_set_efer. */ + else exec_control &= ~CPU_BASED_USE_MSR_BITMAPS; /* -- cgit v0.10.2 From dccbfcf52cebb8963246eba5b177b77f26b34da0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= Date: Mon, 8 Aug 2016 20:16:23 +0200 Subject: KVM: nVMX: postpone VMCS changes on MSR_IA32_APICBASE write MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If vmcs12 does not intercept APIC_BASE writes, then KVM will handle the write with vmcs02 as the current VMCS. This will incorrectly apply modifications intended for vmcs01 to vmcs02 and L2 can use it to gain access to L0's x2APIC registers by disabling virtualized x2APIC while using msr bitmap that assumes enabled. Postpone execution of vmx_set_virtual_x2apic_mode until vmcs01 is the current VMCS. An alternative solution would temporarily make vmcs01 the current VMCS, but it requires more care. Fixes: 8d14695f9542 ("x86, apicv: add virtual x2apic support") Reported-by: Jim Mattson Reviewed-by: Wanpeng Li Signed-off-by: Radim Krčmář diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index c66ac2c..ae111a0 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -422,6 +422,7 @@ struct nested_vmx { struct list_head vmcs02_pool; int vmcs02_num; u64 vmcs01_tsc_offset; + bool change_vmcs01_virtual_x2apic_mode; /* L2 must run next, and mustn't decide to exit to L1. */ bool nested_run_pending; /* @@ -8424,6 +8425,12 @@ static void vmx_set_virtual_x2apic_mode(struct kvm_vcpu *vcpu, bool set) { u32 sec_exec_control; + /* Postpone execution until vmcs01 is the current VMCS. */ + if (is_guest_mode(vcpu)) { + to_vmx(vcpu)->nested.change_vmcs01_virtual_x2apic_mode = true; + return; + } + /* * There is not point to enable virtualize x2apic without enable * apicv @@ -10749,6 +10756,12 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL, PIN_BASED_VMX_PREEMPTION_TIMER); + if (vmx->nested.change_vmcs01_virtual_x2apic_mode) { + vmx->nested.change_vmcs01_virtual_x2apic_mode = false; + vmx_set_virtual_x2apic_mode(vcpu, + vcpu->arch.apic_base & X2APIC_ENABLE); + } + /* This is needed for same reason as it was needed in prepare_vmcs02 */ vmx->host_rsp = 0; -- cgit v0.10.2 From c95ba92afb238ac565c68968fc72e38ca8d1b6e8 Mon Sep 17 00:00:00 2001 From: Peter Feiner Date: Wed, 17 Aug 2016 09:36:47 -0700 Subject: kvm: nVMX: fix nested tsc scaling When the host supported TSC scaling, L2 would use a TSC multiplier of 0, which causes a VM entry failure. Now L2's TSC uses the same multiplier as L1. Signed-off-by: Peter Feiner Signed-off-by: Paolo Bonzini diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index ae111a0..5cede40 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2200,6 +2200,12 @@ static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu) new.control) != old.control); } +static void decache_tsc_multiplier(struct vcpu_vmx *vmx) +{ + vmx->current_tsc_ratio = vmx->vcpu.arch.tsc_scaling_ratio; + vmcs_write64(TSC_MULTIPLIER, vmx->current_tsc_ratio); +} + /* * Switches to specified vcpu, until a matching vcpu_put(), but assumes * vcpu mutex is already taken. @@ -2258,10 +2264,8 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) /* Setup TSC multiplier */ if (kvm_has_tsc_control && - vmx->current_tsc_ratio != vcpu->arch.tsc_scaling_ratio) { - vmx->current_tsc_ratio = vcpu->arch.tsc_scaling_ratio; - vmcs_write64(TSC_MULTIPLIER, vmx->current_tsc_ratio); - } + vmx->current_tsc_ratio != vcpu->arch.tsc_scaling_ratio) + decache_tsc_multiplier(vmx); vmx_vcpu_pi_load(vcpu, cpu); vmx->host_pkru = read_pkru(); @@ -9999,6 +10003,8 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) vmx->nested.vmcs01_tsc_offset + vmcs12->tsc_offset); else vmcs_write64(TSC_OFFSET, vmx->nested.vmcs01_tsc_offset); + if (kvm_has_tsc_control) + decache_tsc_multiplier(vmx); if (enable_vpid) { /* @@ -10755,6 +10761,8 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, else vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL, PIN_BASED_VMX_PREEMPTION_TIMER); + if (kvm_has_tsc_control) + decache_tsc_multiplier(vmx); if (vmx->nested.change_vmcs01_virtual_x2apic_mode) { vmx->nested.change_vmcs01_virtual_x2apic_mode = false; -- cgit v0.10.2 From c81396f3da22aa8f1e8fbf7943616a0839c4d63d Mon Sep 17 00:00:00 2001 From: Cathy Luo Date: Thu, 21 Jul 2016 16:30:24 +0530 Subject: mwifiex: fix large amsdu packets causing firmware hang Sometimes host prepares and downloads a large amsdu packet to firmware which leads to a memory corruption in firmware. The reason is __dev_alloc_skb() may allocate larger buffer than required size. This patch solves the problem by checking "adapter->tx_buf_size" instead of relying on skb_tailroom(). Signed-off-by: Cathy Luo Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/marvell/mwifiex/11n_aggr.c b/drivers/net/wireless/marvell/mwifiex/11n_aggr.c index dc49c3d..c47d636 100644 --- a/drivers/net/wireless/marvell/mwifiex/11n_aggr.c +++ b/drivers/net/wireless/marvell/mwifiex/11n_aggr.c @@ -205,7 +205,8 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv, do { /* Check if AMSDU can accommodate this MSDU */ - if (skb_tailroom(skb_aggr) < (skb_src->len + LLC_SNAP_LEN)) + if ((skb_aggr->len + skb_src->len + LLC_SNAP_LEN) > + adapter->tx_buf_size) break; skb_src = skb_dequeue(&pra_list->skb_head); -- cgit v0.10.2 From 5d0bdf2867825a92c0a563957a2fb059149ab0d4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 11 Aug 2016 07:11:05 -0700 Subject: PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() ahci currently insists on an explicit call to pci_intx() before falling back from MSI or MSI-X to legacy IRQs. As pci_intx() is a no-op if the command register already contains the right value it seems safe and useful to add this call to pci_alloc_irq_vectors() so that ahci can just use pci_alloc_irq_vectors(). Signed-off-by: Christoph Hellwig Signed-off-by: Bjorn Helgaas diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 9233e7f..593698e 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1200,8 +1200,11 @@ int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, } /* use legacy irq if allowed */ - if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1) + if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1) { + pci_intx(dev, 1); return 1; + } + return vecs; } EXPORT_SYMBOL(pci_alloc_irq_vectors); -- cgit v0.10.2 From 12be15dd5ac928b60323b1ed8f6facd7335bb2cc Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sat, 13 Aug 2016 23:13:01 +0800 Subject: netfilter: nfnetlink_acct: fix race between nfacct del and xt_nfacct destroy Suppose that we input the following commands at first: # nfacct add test # iptables -A INPUT -m nfacct --nfacct-name test And now "test" acct's refcnt is 2, but later when we try to delete the "test" nfacct and the related iptables rule at the same time, race maybe happen: CPU0 CPU1 nfnl_acct_try_del nfnl_acct_put atomic_dec_and_test //ref=1,testfail - - atomic_dec_and_test //ref=0,testok - kfree_rcu atomic_inc //ref=1 - So after the rcu grace period, nf_acct will be freed but it is still linked in the nfnl_acct_list, and we can access it later, then oops will happen. Convert atomic_dec_and_test and atomic_inc combinaiton to one atomic operation atomic_cmpxchg here to fix this problem. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c index 796605b..70eb2f6a 100644 --- a/net/netfilter/nfnetlink_acct.c +++ b/net/netfilter/nfnetlink_acct.c @@ -326,14 +326,14 @@ static int nfnl_acct_try_del(struct nf_acct *cur) { int ret = 0; - /* we want to avoid races with nfnl_acct_find_get. */ - if (atomic_dec_and_test(&cur->refcnt)) { + /* We want to avoid races with nfnl_acct_put. So only when the current + * refcnt is 1, we decrease it to 0. + */ + if (atomic_cmpxchg(&cur->refcnt, 1, 0) == 1) { /* We are protected by nfnl mutex. */ list_del_rcu(&cur->head); kfree_rcu(cur, rcu_head); } else { - /* still in use, restore reference counter. */ - atomic_inc(&cur->refcnt); ret = -EBUSY; } return ret; -- cgit v0.10.2 From b75911b66ad508a3c3f006ce37d9f9ebee34da43 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Thu, 18 Aug 2016 20:39:05 +0800 Subject: netfilter: cttimeout: fix use after free error when delete netns In general, when we want to delete a netns, cttimeout_net_exit will be called before ipt_unregister_table, i.e. before ctnl_timeout_put. But after call kfree_rcu in cttimeout_net_exit, we will still decrease the timeout object's refcnt in ctnl_timeout_put, this is incorrect, and will cause a use after free error. It is easy to reproduce this problem: # while : ; do ip netns add xxx ip netns exec xxx nfct add timeout testx inet icmp timeout 200 ip netns exec xxx iptables -t raw -p icmp -I OUTPUT -j CT --timeout testx ip netns del xxx done ======================================================================= BUG kmalloc-96 (Tainted: G B E ): Poison overwritten ----------------------------------------------------------------------- INFO: 0xffff88002b5161e8-0xffff88002b5161e8. First byte 0x6a instead of 0x6b INFO: Allocated in cttimeout_new_timeout+0xd4/0x240 [nfnetlink_cttimeout] age=104 cpu=0 pid=3330 ___slab_alloc+0x4da/0x540 __slab_alloc+0x20/0x40 __kmalloc+0x1c8/0x240 cttimeout_new_timeout+0xd4/0x240 [nfnetlink_cttimeout] nfnetlink_rcv_msg+0x21a/0x230 [nfnetlink] [ ... ] So only when the refcnt decreased to 0, we call kfree_rcu to free the timeout object. And like nfnetlink_acct do, use atomic_cmpxchg to avoid race between ctnl_timeout_try_del and ctnl_timeout_put. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c index 4cdcd96..68216cd 100644 --- a/net/netfilter/nfnetlink_cttimeout.c +++ b/net/netfilter/nfnetlink_cttimeout.c @@ -330,16 +330,16 @@ static int ctnl_timeout_try_del(struct net *net, struct ctnl_timeout *timeout) { int ret = 0; - /* we want to avoid races with nf_ct_timeout_find_get. */ - if (atomic_dec_and_test(&timeout->refcnt)) { + /* We want to avoid races with ctnl_timeout_put. So only when the + * current refcnt is 1, we decrease it to 0. + */ + if (atomic_cmpxchg(&timeout->refcnt, 1, 0) == 1) { /* We are protected by nfnl mutex. */ list_del_rcu(&timeout->head); nf_ct_l4proto_put(timeout->l4proto); ctnl_untimeout(net, timeout); kfree_rcu(timeout, rcu_head); } else { - /* still in use, restore reference counter. */ - atomic_inc(&timeout->refcnt); ret = -EBUSY; } return ret; @@ -543,7 +543,9 @@ err: static void ctnl_timeout_put(struct ctnl_timeout *timeout) { - atomic_dec(&timeout->refcnt); + if (atomic_dec_and_test(&timeout->refcnt)) + kfree_rcu(timeout, rcu_head); + module_put(THIS_MODULE); } #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ @@ -591,7 +593,9 @@ static void __net_exit cttimeout_net_exit(struct net *net) list_for_each_entry_safe(cur, tmp, &net->nfct_timeout_list, head) { list_del_rcu(&cur->head); nf_ct_l4proto_put(cur->l4proto); - kfree_rcu(cur, rcu_head); + + if (atomic_dec_and_test(&cur->refcnt)) + kfree_rcu(cur, rcu_head); } } -- cgit v0.10.2 From 479e2a86dc6aeaec6013165e1bd3525db6914f3a Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 18 Aug 2016 14:00:59 +0300 Subject: ASoC: omap-mcpdm: Drop pdmclk clock handling This reverts commit 65aca64d05b5eaa5ce15e18b458a8d338ddbd478. The patches for twl6040 MFD and clk missed the merge window and causing the McPDM driver to never probe since it is put back to the deferred list because the missing drivers. Signed-off-by: Peter Ujfalusi Signed-off-by: Mark Brown diff --git a/Documentation/devicetree/bindings/sound/omap-mcpdm.txt b/Documentation/devicetree/bindings/sound/omap-mcpdm.txt index 6f6c2f8..0741dff 100644 --- a/Documentation/devicetree/bindings/sound/omap-mcpdm.txt +++ b/Documentation/devicetree/bindings/sound/omap-mcpdm.txt @@ -8,8 +8,6 @@ Required properties: - interrupts: Interrupt number for McPDM - interrupt-parent: The parent interrupt controller - ti,hwmods: Name of the hwmod associated to the McPDM -- clocks: phandle for the pdmclk provider, likely <&twl6040> -- clock-names: Must be "pdmclk" Example: @@ -21,11 +19,3 @@ mcpdm: mcpdm@40132000 { interrupt-parent = <&gic>; ti,hwmods = "mcpdm"; }; - -In board DTS file the pdmclk needs to be added: - -&mcpdm { - clocks = <&twl6040>; - clock-names = "pdmclk"; - status = "okay"; -}; diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c index e7cdc51..74d6e6f 100644 --- a/sound/soc/omap/omap-mcpdm.c +++ b/sound/soc/omap/omap-mcpdm.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include #include @@ -55,7 +54,6 @@ struct omap_mcpdm { unsigned long phys_base; void __iomem *io_base; int irq; - struct clk *pdmclk; struct mutex mutex; @@ -390,7 +388,6 @@ static int omap_mcpdm_probe(struct snd_soc_dai *dai) struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai); int ret; - clk_prepare_enable(mcpdm->pdmclk); pm_runtime_enable(mcpdm->dev); /* Disable lines while request is ongoing */ @@ -425,7 +422,6 @@ static int omap_mcpdm_remove(struct snd_soc_dai *dai) pm_runtime_disable(mcpdm->dev); - clk_disable_unprepare(mcpdm->pdmclk); return 0; } @@ -445,8 +441,6 @@ static int omap_mcpdm_suspend(struct snd_soc_dai *dai) mcpdm->pm_active_count++; } - clk_disable_unprepare(mcpdm->pdmclk); - return 0; } @@ -454,8 +448,6 @@ static int omap_mcpdm_resume(struct snd_soc_dai *dai) { struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai); - clk_prepare_enable(mcpdm->pdmclk); - if (mcpdm->pm_active_count) { while (mcpdm->pm_active_count--) pm_runtime_get_sync(mcpdm->dev); @@ -549,15 +541,6 @@ static int asoc_mcpdm_probe(struct platform_device *pdev) mcpdm->dev = &pdev->dev; - mcpdm->pdmclk = devm_clk_get(&pdev->dev, "pdmclk"); - if (IS_ERR(mcpdm->pdmclk)) { - if (PTR_ERR(mcpdm->pdmclk) == -EPROBE_DEFER) - return -EPROBE_DEFER; - dev_warn(&pdev->dev, "Error getting pdmclk (%ld)!\n", - PTR_ERR(mcpdm->pdmclk)); - mcpdm->pdmclk = NULL; - } - ret = devm_snd_soc_register_component(&pdev->dev, &omap_mcpdm_component, &omap_mcpdm_dai, 1); -- cgit v0.10.2 From ae5b80d2b68eac945b124227dea34462118a6f01 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Thu, 18 Aug 2016 11:51:14 +0200 Subject: drm/radeon: only apply the SS fractional workaround to RS[78]80 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Looks like some RV6xx have problems with that. bug: https://bugs.freedesktop.org/show_bug.cgi?id=97099 Reviewed-by: Alex Deucher Signed-off-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index a97abc8..1dcf390 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -627,7 +627,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (radeon_crtc->ss.refdiv) { radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV; radeon_crtc->pll_reference_div = radeon_crtc->ss.refdiv; - if (rdev->family >= CHIP_RV770) + if (ASIC_IS_AVIVO(rdev) && + rdev->family != CHIP_RS780 && + rdev->family != CHIP_RS880) radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; } } -- cgit v0.10.2 From 51c70261b2575962cb9406cd92246b1cee6a3c71 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 18 Aug 2016 17:21:37 +0200 Subject: Revert "android: binder: fix dangling pointer comparison" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 7b142d8fd0bd4c9bf06ccb72ac4daedb503f0124. It doesn't seem to be correct, no one seems to have tested it, and the email address of the submitter now bounces :( So revert it. Cc: Jann Horn Cc: Chen Feng Cc: stable Cc: Arve Hjønnevåg Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 09fdb42..16288e7 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -2962,7 +2962,6 @@ static int binder_open(struct inode *nodp, struct file *filp) return -ENOMEM; get_task_struct(current); proc->tsk = current; - atomic_inc(¤t->mm->mm_count); proc->vma_vm_mm = current->mm; INIT_LIST_HEAD(&proc->todo); init_waitqueue_head(&proc->wait); @@ -3168,7 +3167,6 @@ static void binder_deferred_release(struct binder_proc *proc) vfree(proc->buffer); } - mmdrop(proc->vma_vm_mm); put_task_struct(proc->tsk); binder_debug(BINDER_DEBUG_OPEN_CLOSE, -- cgit v0.10.2 From 87a713c8ffca33d8e497a8b6c02034332bd80394 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 10 Aug 2016 23:54:13 +0200 Subject: 8250/fintek: rename IRQ_MODE macro A bugfix for the fintek driver required defining some macros, but one of them clashes with a system header on ARM: drivers/tty/serial/8250/8250_fintek.c:34:0: error: "IRQ_MODE" redefined [-Werror] #define IRQ_MODE 0x70 In file included from /git/arm-soc/arch/arm/include/asm/ptrace.h:13:0, from /git/arm-soc/arch/arm/include/asm/irqflags.h:6, from /git/arm-soc/include/linux/irqflags.h:15, from /git/arm-soc/arch/arm/include/asm/bitops.h:27, from /git/arm-soc/include/linux/bitops.h:36, from /git/arm-soc/include/linux/kernel.h:10, from /git/arm-soc/include/linux/list.h:8, from /git/arm-soc/include/linux/module.h:9, from /git/arm-soc/drivers/tty/serial/8250/8250_fintek.c:11: arch/arm/include/uapi/asm/ptrace.h:55:0: note: this is the location of the previous definition This renames the newly introduced 'IRQ_MODE' macro to FINTEK_IRQ_MODE. Signed-off-by: Arnd Bergmann Fixes: 4da22f1418cb ("serial: 8250_fintek: fix the mismatched IRQ mode") Link: https://patchwork.kernel.org/patch/9200119/ Acked-by: Ji-Ze Hong (Peter Hong) Acked-by: Ricardo Ribalda Delgado Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c index 737b4b3..0facc78 100644 --- a/drivers/tty/serial/8250/8250_fintek.c +++ b/drivers/tty/serial/8250/8250_fintek.c @@ -31,7 +31,7 @@ #define IO_ADDR2 0x60 #define LDN 0x7 -#define IRQ_MODE 0x70 +#define FINTEK_IRQ_MODE 0x70 #define IRQ_SHARE BIT(4) #define IRQ_MODE_MASK (BIT(6) | BIT(5)) #define IRQ_LEVEL_LOW 0 @@ -195,7 +195,7 @@ static int fintek_8250_set_irq_mode(struct fintek_8250 *pdata, bool level_mode) outb(LDN, pdata->base_port + ADDR_PORT); outb(pdata->index, pdata->base_port + DATA_PORT); - outb(IRQ_MODE, pdata->base_port + ADDR_PORT); + outb(FINTEK_IRQ_MODE, pdata->base_port + ADDR_PORT); tmp = inb(pdata->base_port + DATA_PORT); tmp &= ~IRQ_MODE_MASK; -- cgit v0.10.2 From 0215d59b154ab90c56c4fe49bc1deefe8bca18f1 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 18 Aug 2016 09:28:23 -0700 Subject: tools lib: Reinstate strlcpy() header guard with __UCLIBC__ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit perf tools build in recent kernels spews splat when cross compiling with uClibc: | CC util/alias.o | In file included from tools/perf/util/../ui/../util/cache.h:8:0, | from tools/perf/util/../ui/helpline.h:7, | from tools/perf/util/debug.h:8, | from arch/../util/cpumap.h:9, | from arch/../util/env.h:5, | from arch/common.h:4, | from arch/common.c:3: | tools/include/linux/string.h:12:15: warning: redundant redeclaration of ‘strlcpy’ [-Wredundant-decls] | extern size_t strlcpy(char *dest, const char *src, size_t size); ^ This is after commit 61a6445e463a31 ("tools lib: Guard the strlcpy() header with __GLIBC__"). The problem is uClibc also defines __GLIBC__ for exported headers for applications. So add that specific check to not trip for uClibc. Signed-off-by: Vineet Gupta Cc: Adrian Hunter Cc: Alexey Brodkin Cc: David Ahern Cc: Jiri Olsa Cc: Josh Poimboeuf Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Petri Gynther Cc: Wang Nan Cc: linux-snps-arc@lists.infradead.org Link: http://lkml.kernel.org/r/1471537703-16439-1-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h index b968794..f436d24 100644 --- a/tools/include/linux/string.h +++ b/tools/include/linux/string.h @@ -8,7 +8,11 @@ void *memdup(const void *src, size_t len); int strtobool(const char *s, bool *res); -#ifdef __GLIBC__ +/* + * glibc based builds needs the extern while uClibc doesn't. + * However uClibc headers also define __GLIBC__ hence the hack below + */ +#if defined(__GLIBC__) && !defined(__UCLIBC__) extern size_t strlcpy(char *dest, const char *src, size_t size); #endif -- cgit v0.10.2 From c53412ee8c7ec31373a4176ff7f3a6b79296c05c Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 18 Aug 2016 16:30:28 -0300 Subject: perf evsel: Do not access outside hw cache name arrays We have to check if the values are >= *_MAX, not just >, fix it. From the bugzilla report: ''In file /tools/perf/util/evsel.c function __perf_evsel__hw_cache_name it appears that there is a bug that reads beyond the end of the buffer. The statement "if (type > PERF_COUNT_HW_CACHE_MAX)" allows type to be equal to the maximum value. Later, when statement "if (!perf_evsel__is_cache_op_valid(type, op))" is executed, the function can access array perf_evsel__hw_cache_stat[type] beyond the end of the buffer. It appears to me that the statement "if (type > PERF_COUNT_HW_CACHE_MAX)" should be "if (type >= PERF_COUNT_HW_CACHE_MAX)" Bug found with Coverity and manual code review. No attempts were made to execute the code with a maximum type value.'' Committer note: Testing it: $ perf record -e $(echo $(perf list cache | cut -d \[ -f1) | sed 's/ /,/g') usleep 1 [ perf record: Woken up 16 times to write data ] [ perf record: Captured and wrote 0.023 MB perf.data (34 samples) ] $ perf evlist L1-dcache-load-misses L1-dcache-loads L1-dcache-stores L1-icache-load-misses LLC-load-misses LLC-loads LLC-store-misses LLC-stores branch-load-misses branch-loads dTLB-load-misses dTLB-loads dTLB-store-misses dTLB-stores iTLB-load-misses iTLB-loads node-load-misses node-loads node-store-misses node-stores $ perf list cache List of pre-defined events (to be used in -e): L1-dcache-load-misses [Hardware cache event] L1-dcache-loads [Hardware cache event] L1-dcache-stores [Hardware cache event] L1-icache-load-misses [Hardware cache event] LLC-load-misses [Hardware cache event] LLC-loads [Hardware cache event] LLC-store-misses [Hardware cache event] LLC-stores [Hardware cache event] branch-load-misses [Hardware cache event] branch-loads [Hardware cache event] dTLB-load-misses [Hardware cache event] dTLB-loads [Hardware cache event] dTLB-store-misses [Hardware cache event] dTLB-stores [Hardware cache event] iTLB-load-misses [Hardware cache event] iTLB-loads [Hardware cache event] node-load-misses [Hardware cache event] node-loads [Hardware cache event] node-store-misses [Hardware cache event] node-stores [Hardware cache event] $ Reported-by: Brian Sweeney Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=153351 Signed-off-by: Arnaldo Carvalho de Melo diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index d9b80ef..21fd573 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -507,17 +507,17 @@ static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) u8 op, result, type = (config >> 0) & 0xff; const char *err = "unknown-ext-hardware-cache-type"; - if (type > PERF_COUNT_HW_CACHE_MAX) + if (type >= PERF_COUNT_HW_CACHE_MAX) goto out_err; op = (config >> 8) & 0xff; err = "unknown-ext-hardware-cache-op"; - if (op > PERF_COUNT_HW_CACHE_OP_MAX) + if (op >= PERF_COUNT_HW_CACHE_OP_MAX) goto out_err; result = (config >> 16) & 0xff; err = "unknown-ext-hardware-cache-result"; - if (result > PERF_COUNT_HW_CACHE_RESULT_MAX) + if (result >= PERF_COUNT_HW_CACHE_RESULT_MAX) goto out_err; err = "invalid-cache"; -- cgit v0.10.2 From c4e94174983a86c935be1537a73e496b778b0287 Mon Sep 17 00:00:00 2001 From: Li Jun Date: Tue, 16 Aug 2016 19:19:11 +0800 Subject: usb: chipidea: udc: don't touch DP when controller is in host mode When the controller is configured to be dual role and it's in host mode, if bind udc and gadgt driver, those gadget operations will do gadget disconnect and finally pull down DP line, which will break host function. Cc: # 4.1+ Signed-off-by: Li Jun Signed-off-by: Peter Chen diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 065f5d9..dfec5a1 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1596,8 +1596,11 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on) { struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); - /* Data+ pullup controlled by OTG state machine in OTG fsm mode */ - if (ci_otg_is_fsm_mode(ci)) + /* + * Data+ pullup controlled by OTG state machine in OTG fsm mode; + * and don't touch Data+ in host mode for dual role config. + */ + if (ci_otg_is_fsm_mode(ci) || ci->role == CI_ROLE_HOST) return 0; pm_runtime_get_sync(&ci->gadget.dev); -- cgit v0.10.2 From b873b798af6386f3c7ca1636d4989e9b8f9d1794 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Thu, 4 Aug 2016 11:38:25 -0700 Subject: Revert "f2fs: use percpu_rw_semaphore" LKP reported -36.3% regression of fsmark.files_per_sec due to this patch. I've confirmed that fxmark [1] has also slight regression for DWAL. [1] https://github.com/sslab-gatech/fxmark This reverts commit ec795418c41850056feb956534edf059dc1155d4. diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 675fa79..14f5fe2 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -538,7 +538,7 @@ struct f2fs_nm_info { /* NAT cache management */ struct radix_tree_root nat_root;/* root of the nat entry cache */ struct radix_tree_root nat_set_root;/* root of the nat set cache */ - struct percpu_rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ + struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ struct list_head nat_entries; /* cached nat entry list (clean) */ unsigned int nat_cnt; /* the # of cached nat entries */ unsigned int dirty_nat_cnt; /* total num of nat entries in set */ @@ -787,7 +787,7 @@ struct f2fs_sb_info { struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ struct inode *meta_inode; /* cache meta blocks */ struct mutex cp_mutex; /* checkpoint procedure lock */ - struct percpu_rw_semaphore cp_rwsem; /* blocking FS operations */ + struct rw_semaphore cp_rwsem; /* blocking FS operations */ struct rw_semaphore node_write; /* locking node writes */ wait_queue_head_t cp_wait; unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ @@ -1074,22 +1074,22 @@ static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) { - percpu_down_read(&sbi->cp_rwsem); + down_read(&sbi->cp_rwsem); } static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) { - percpu_up_read(&sbi->cp_rwsem); + up_read(&sbi->cp_rwsem); } static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) { - percpu_down_write(&sbi->cp_rwsem); + down_write(&sbi->cp_rwsem); } static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) { - percpu_up_write(&sbi->cp_rwsem); + up_write(&sbi->cp_rwsem); } static inline int __get_cp_reason(struct f2fs_sb_info *sbi) diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index b2fa4b6..f75d197 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -206,14 +206,14 @@ int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) struct nat_entry *e; bool need = false; - percpu_down_read(&nm_i->nat_tree_lock); + down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); if (e) { if (!get_nat_flag(e, IS_CHECKPOINTED) && !get_nat_flag(e, HAS_FSYNCED_INODE)) need = true; } - percpu_up_read(&nm_i->nat_tree_lock); + up_read(&nm_i->nat_tree_lock); return need; } @@ -223,11 +223,11 @@ bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) struct nat_entry *e; bool is_cp = true; - percpu_down_read(&nm_i->nat_tree_lock); + down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); if (e && !get_nat_flag(e, IS_CHECKPOINTED)) is_cp = false; - percpu_up_read(&nm_i->nat_tree_lock); + up_read(&nm_i->nat_tree_lock); return is_cp; } @@ -237,13 +237,13 @@ bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) struct nat_entry *e; bool need_update = true; - percpu_down_read(&nm_i->nat_tree_lock); + down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, ino); if (e && get_nat_flag(e, HAS_LAST_FSYNC) && (get_nat_flag(e, IS_CHECKPOINTED) || get_nat_flag(e, HAS_FSYNCED_INODE))) need_update = false; - percpu_up_read(&nm_i->nat_tree_lock); + up_read(&nm_i->nat_tree_lock); return need_update; } @@ -284,7 +284,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, struct f2fs_nm_info *nm_i = NM_I(sbi); struct nat_entry *e; - percpu_down_write(&nm_i->nat_tree_lock); + down_write(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, ni->nid); if (!e) { e = grab_nat_entry(nm_i, ni->nid); @@ -334,7 +334,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, set_nat_flag(e, HAS_FSYNCED_INODE, true); set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); } - percpu_up_write(&nm_i->nat_tree_lock); + up_write(&nm_i->nat_tree_lock); } int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) @@ -342,7 +342,8 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) struct f2fs_nm_info *nm_i = NM_I(sbi); int nr = nr_shrink; - percpu_down_write(&nm_i->nat_tree_lock); + if (!down_write_trylock(&nm_i->nat_tree_lock)) + return 0; while (nr_shrink && !list_empty(&nm_i->nat_entries)) { struct nat_entry *ne; @@ -351,7 +352,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) __del_from_nat_cache(nm_i, ne); nr_shrink--; } - percpu_up_write(&nm_i->nat_tree_lock); + up_write(&nm_i->nat_tree_lock); return nr - nr_shrink; } @@ -373,13 +374,13 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) ni->nid = nid; /* Check nat cache */ - percpu_down_read(&nm_i->nat_tree_lock); + down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); if (e) { ni->ino = nat_get_ino(e); ni->blk_addr = nat_get_blkaddr(e); ni->version = nat_get_version(e); - percpu_up_read(&nm_i->nat_tree_lock); + up_read(&nm_i->nat_tree_lock); return; } @@ -403,11 +404,11 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) node_info_from_raw_nat(ni, &ne); f2fs_put_page(page, 1); cache: - percpu_up_read(&nm_i->nat_tree_lock); + up_read(&nm_i->nat_tree_lock); /* cache nat entry */ - percpu_down_write(&nm_i->nat_tree_lock); + down_write(&nm_i->nat_tree_lock); cache_nat_entry(sbi, nid, &ne); - percpu_up_write(&nm_i->nat_tree_lock); + up_write(&nm_i->nat_tree_lock); } /* @@ -1788,7 +1789,7 @@ void build_free_nids(struct f2fs_sb_info *sbi) ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT, true); - percpu_down_read(&nm_i->nat_tree_lock); + down_read(&nm_i->nat_tree_lock); while (1) { struct page *page = get_current_nat_page(sbi, nid); @@ -1820,7 +1821,7 @@ void build_free_nids(struct f2fs_sb_info *sbi) remove_free_nid(nm_i, nid); } up_read(&curseg->journal_rwsem); - percpu_up_read(&nm_i->nat_tree_lock); + up_read(&nm_i->nat_tree_lock); ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), nm_i->ra_nid_pages, META_NAT, false); @@ -2209,7 +2210,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi) if (!nm_i->dirty_nat_cnt) return; - percpu_down_write(&nm_i->nat_tree_lock); + down_write(&nm_i->nat_tree_lock); /* * if there are no enough space in journal to store dirty nat @@ -2232,7 +2233,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi) list_for_each_entry_safe(set, tmp, &sets, set_list) __flush_nat_entry_set(sbi, set); - percpu_up_write(&nm_i->nat_tree_lock); + up_write(&nm_i->nat_tree_lock); f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); } @@ -2268,8 +2269,7 @@ static int init_node_manager(struct f2fs_sb_info *sbi) mutex_init(&nm_i->build_lock); spin_lock_init(&nm_i->free_nid_list_lock); - if (percpu_init_rwsem(&nm_i->nat_tree_lock)) - return -ENOMEM; + init_rwsem(&nm_i->nat_tree_lock); nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); @@ -2326,7 +2326,7 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) spin_unlock(&nm_i->free_nid_list_lock); /* destroy nat cache */ - percpu_down_write(&nm_i->nat_tree_lock); + down_write(&nm_i->nat_tree_lock); while ((found = __gang_lookup_nat_cache(nm_i, nid, NATVEC_SIZE, natvec))) { unsigned idx; @@ -2351,9 +2351,8 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) kmem_cache_free(nat_entry_set_slab, setvec[idx]); } } - percpu_up_write(&nm_i->nat_tree_lock); + up_write(&nm_i->nat_tree_lock); - percpu_free_rwsem(&nm_i->nat_tree_lock); kfree(nm_i->nat_bitmap); sbi->nm_info = NULL; kfree(nm_i); diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 1b86d3f..7f863a6 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -706,8 +706,6 @@ static void destroy_percpu_info(struct f2fs_sb_info *sbi) percpu_counter_destroy(&sbi->nr_pages[i]); percpu_counter_destroy(&sbi->alloc_valid_block_count); percpu_counter_destroy(&sbi->total_valid_inode_count); - - percpu_free_rwsem(&sbi->cp_rwsem); } static void f2fs_put_super(struct super_block *sb) @@ -1483,9 +1481,6 @@ static int init_percpu_info(struct f2fs_sb_info *sbi) { int i, err; - if (percpu_init_rwsem(&sbi->cp_rwsem)) - return -ENOMEM; - for (i = 0; i < NR_COUNT_TYPE; i++) { err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL); if (err) @@ -1686,6 +1681,7 @@ try_onemore: sbi->write_io[i].bio = NULL; } + init_rwsem(&sbi->cp_rwsem); init_waitqueue_head(&sbi->cp_wait); init_sb_info(sbi); -- cgit v0.10.2 From 3024c9a1fefb3ac0d1b0b078a2e3f2f69478daab Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Sat, 6 Aug 2016 21:09:41 +0800 Subject: Revert "f2fs: move i_size_write in f2fs_write_end" This reverts commit a2ee0a300344a6da76186129b078113354fe13d2. When testing with generic/032 of xfstest suit, failure message will be reported as below: generic/032 8s ... [failed, exit status 1] - output mismatch (see results/generic/032.out.bad) --- tests/generic/032.out 2015-01-11 16:52:27.643681072 +0800 +++ results/generic/032.out.bad 2016-08-06 13:44:43.861330500 +0800 @@ -1,5 +1,5 @@ QA output created by 032 -100 iterations -0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd -* -0100000 +1: [768..775]: unwritten +Unwritten extents found! ... (Run 'diff -u tests/generic/032.out results/generic/032.out.bad' to see the entire diff) Ran: generic/032 Failures: generic/032 Failed 1 of 1 tests In write_end(), we should update i_size of inode before unlock page, otherwise, we will lose newly updated data in following race condition. Thread A Thread B - write_end - unlock page - writepages - lock_page - writepage if page is out-of-range of file size, we will skip writting the page. - update i_size Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index d64d2a5..ccb401e 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1699,11 +1699,11 @@ static int f2fs_write_end(struct file *file, trace_f2fs_write_end(inode, pos, len, copied); set_page_dirty(page); - f2fs_put_page(page, 1); if (pos + copied > i_size_read(inode)) f2fs_i_size_write(inode, pos + copied); + f2fs_put_page(page, 1); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); return copied; } -- cgit v0.10.2 From fe8494bfc8c2914fca821d4ae994aef039be5cf1 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Thu, 4 Aug 2016 20:13:02 +0800 Subject: f2fs: allow copying file range only in between regular files Only if two input files are regular files, we allow copying data in range of them, otherwise, deny it. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 0e493f6..685e629 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -2086,8 +2086,8 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, if (unlikely(f2fs_readonly(src->i_sb))) return -EROFS; - if (S_ISDIR(src->i_mode) || S_ISDIR(dst->i_mode)) - return -EISDIR; + if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) + return -EINVAL; if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) return -EOPNOTSUPP; -- cgit v0.10.2 From 20a3d61d46e1fb45efa6eb4637c0dcd3f00a14e9 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Thu, 4 Aug 2016 20:13:03 +0800 Subject: f2fs: avoid potential deadlock in f2fs_move_file_range Thread A Thread B - inode_lock fileA - inode_lock fileB - inode_lock fileA - inode_lock fileB We may encounter above potential deadlock during moving file range in concurrent scenario. This patch fixes the issue by using inode_trylock instead. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 685e629..47abb96 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -2093,8 +2093,12 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, return -EOPNOTSUPP; inode_lock(src); - if (src != dst) - inode_lock(dst); + if (src != dst) { + if (!inode_trylock(dst)) { + ret = -EBUSY; + goto out; + } + } ret = -EINVAL; if (pos_in + len > src->i_size || pos_in + len < pos_in) @@ -2152,6 +2156,7 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, out_unlock: if (src != dst) inode_unlock(dst); +out: inode_unlock(src); return ret; } -- cgit v0.10.2 From c1a23f6d64552b4480208aa584ec7e9c13d6d9c3 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 17 Aug 2016 11:46:16 +0200 Subject: scsi: sas: provide stub implementation for scsi_is_sas_rphy Provide a stub implementation for scsi_is_sas_rphy for kernel configurations which do not have CONFIG_SCSI_SAS_ATTRS defined. Reported-by: kbuild test robot Suggested-by: James Bottomley Reviewed-by: James E.J. Bottomley Signed-off-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h index 13c0b2b..31ae074 100644 --- a/include/scsi/scsi_transport_sas.h +++ b/include/scsi/scsi_transport_sas.h @@ -15,8 +15,14 @@ static inline int is_sas_attached(struct scsi_device *sdev) { return 0; } + +static inline int scsi_is_sas_rphy(const struct device *sdev) +{ + return 0; +} #else extern int is_sas_attached(struct scsi_device *sdev); +extern int scsi_is_sas_rphy(const struct device *); #endif static inline int sas_protocol_ata(enum sas_protocol proto) @@ -202,7 +208,6 @@ extern int sas_rphy_add(struct sas_rphy *); extern void sas_rphy_remove(struct sas_rphy *); extern void sas_rphy_delete(struct sas_rphy *); extern void sas_rphy_unlink(struct sas_rphy *); -extern int scsi_is_sas_rphy(const struct device *); struct sas_port *sas_port_alloc(struct device *, int); struct sas_port *sas_port_alloc_num(struct device *); -- cgit v0.10.2 From 835831c57e9b0cccc24e96a812542875471d75b5 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 17 Aug 2016 11:46:17 +0200 Subject: scsi: ses: use scsi_is_sas_rphy instead of is_sas_attached Use scsi_is_sas_rphy() instead of is_sas_attached() to decide whether we should obtain the SAS address from a scsi device or not. This will prevent us from tripping on the BUG_ON() in sas_sdev_to_rdev() if the rphy isn't attached to the SAS transport class, like it is with hpsa's logical devices. Fixes: 3f8d6f2a0 ('ses: fix discovery of SATA devices in SAS enclosures') Signed-off-by: Johannes Thumshirn Reviewed-by: James E.J. Bottomley Signed-off-by: Martin K. Petersen diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c index 0e8601a..8c9a35c 100644 --- a/drivers/scsi/ses.c +++ b/drivers/scsi/ses.c @@ -587,7 +587,7 @@ static void ses_match_to_enclosure(struct enclosure_device *edev, ses_enclosure_data_process(edev, to_scsi_device(edev->edev.parent), 0); - if (is_sas_attached(sdev)) + if (scsi_is_sas_rphy(&sdev->sdev_gendev)) efd.addr = sas_get_address(sdev); if (efd.addr) { -- cgit v0.10.2 From a0f81dbeef13aa0aeaa8b955b38735dbf09de392 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 17 Aug 2016 11:46:18 +0200 Subject: scsi: sas: remove is_sas_attached() As there are no more users of is_sas_attached() left, remove it. Signed-off-by: Johannes Thumshirn Reviewed-by: James E.J. Bottomley Signed-off-by: Martin K. Petersen diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c index 3f0ff07..60b651bfa 100644 --- a/drivers/scsi/scsi_transport_sas.c +++ b/drivers/scsi/scsi_transport_sas.c @@ -341,22 +341,6 @@ static int do_sas_phy_delete(struct device *dev, void *data) } /** - * is_sas_attached - check if device is SAS attached - * @sdev: scsi device to check - * - * returns true if the device is SAS attached - */ -int is_sas_attached(struct scsi_device *sdev) -{ - struct Scsi_Host *shost = sdev->host; - - return shost->transportt->host_attrs.ac.class == - &sas_host_class.class; -} -EXPORT_SYMBOL(is_sas_attached); - - -/** * sas_remove_children - tear down a devices SAS data structures * @dev: device belonging to the sas object * diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h index 31ae074..73d8709 100644 --- a/include/scsi/scsi_transport_sas.h +++ b/include/scsi/scsi_transport_sas.h @@ -11,17 +11,11 @@ struct sas_rphy; struct request; #if !IS_ENABLED(CONFIG_SCSI_SAS_ATTRS) -static inline int is_sas_attached(struct scsi_device *sdev) -{ - return 0; -} - static inline int scsi_is_sas_rphy(const struct device *sdev) { return 0; } #else -extern int is_sas_attached(struct scsi_device *sdev); extern int scsi_is_sas_rphy(const struct device *); #endif -- cgit v0.10.2 From d9dc1702b297ec4a6bb9c0326a70641b322ba886 Mon Sep 17 00:00:00 2001 From: Eric Wheeler Date: Fri, 17 Jun 2016 15:01:54 -0700 Subject: bcache: register_bcache(): call blkdev_put() when cache_alloc() fails register_cache() is supposed to return an error string on error so that register_bcache() will will blkdev_put and cleanup other user counters, but it does not set 'char *err' when cache_alloc() fails (eg, due to memory pressure) and thus register_bcache() performs no cleanup. register_bcache() <----------\ <- no jump to err_close, no blkdev_put() | | +->register_cache() | <- fails to set char *err | | +->cache_alloc() ---/ <- returns error This patch sets `char *err` for this failure case so that register_cache() will cause register_bcache() to correctly jump to err_close and do cleanup. This was tested under OOM conditions that triggered the bug. Signed-off-by: Eric Wheeler Cc: Kent Overstreet Cc: stable@vger.kernel.org diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 95a4ca6..6ada14b 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1844,7 +1844,7 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page, struct block_device *bdev, struct cache *ca) { char name[BDEVNAME_SIZE]; - const char *err = NULL; + const char *err = NULL; /* must be set for any error case */ int ret = 0; memcpy(&ca->sb, sb, sizeof(struct cache_sb)); @@ -1861,8 +1861,13 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page, ca->discard = CACHE_DISCARD(&ca->sb); ret = cache_alloc(ca); - if (ret != 0) + if (ret != 0) { + if (ret == -ENOMEM) + err = "cache_alloc(): -ENOMEM"; + else + err = "cache_alloc(): unknown error"; goto err; + } if (kobject_add(&ca->kobj, &part_to_dev(bdev->bd_part)->kobj, "bcache")) { err = "error calling kobject_add"; -- cgit v0.10.2 From acc9cf8c66c66b2cbbdb4a375537edee72be64df Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Wed, 17 Aug 2016 18:21:24 -0700 Subject: bcache: RESERVE_PRIO is too small by one when prio_buckets() is a power of two. This patch fixes a cachedev registration-time allocation deadlock. This can deadlock on boot if your initrd auto-registeres bcache devices: Allocator thread: [ 720.727614] INFO: task bcache_allocato:3833 blocked for more than 120 seconds. [ 720.732361] [] schedule+0x37/0x90 [ 720.732963] [] bch_bucket_alloc+0x188/0x360 [bcache] [ 720.733538] [] ? prepare_to_wait_event+0xf0/0xf0 [ 720.734137] [] bch_prio_write+0x19d/0x340 [bcache] [ 720.734715] [] bch_allocator_thread+0x3ff/0x470 [bcache] [ 720.735311] [] ? __schedule+0x2dc/0x950 [ 720.735884] [] ? invalidate_buckets+0x980/0x980 [bcache] Registration thread: [ 720.710403] INFO: task bash:3531 blocked for more than 120 seconds. [ 720.715226] [] schedule+0x37/0x90 [ 720.715805] [] __bch_btree_map_nodes+0x12d/0x150 [bcache] [ 720.716409] [] ? bch_btree_insert_check_key+0x1c0/0x1c0 [bcache] [ 720.717008] [] bch_btree_insert+0xf4/0x170 [bcache] [ 720.717586] [] ? prepare_to_wait_event+0xf0/0xf0 [ 720.718191] [] bch_journal_replay+0x14a/0x290 [bcache] [ 720.718766] [] ? ttwu_do_activate.constprop.94+0x5d/0x70 [ 720.719369] [] ? try_to_wake_up+0x1d4/0x350 [ 720.719968] [] run_cache_set+0x580/0x8e0 [bcache] [ 720.720553] [] register_bcache+0xe2e/0x13b0 [bcache] [ 720.721153] [] kobj_attr_store+0xf/0x20 [ 720.721730] [] sysfs_kf_write+0x3d/0x50 [ 720.722327] [] kernfs_fop_write+0x12a/0x180 [ 720.722904] [] __vfs_write+0x37/0x110 [ 720.723503] [] ? __sb_start_write+0x58/0x110 [ 720.724100] [] ? security_file_permission+0x23/0xa0 [ 720.724675] [] vfs_write+0xa9/0x1b0 [ 720.725275] [] ? do_audit_syscall_entry+0x6c/0x70 [ 720.725849] [] SyS_write+0x55/0xd0 [ 720.726451] [] ? do_page_fault+0x30/0x80 [ 720.727045] [] system_call_fastpath+0x12/0x71 The fifo code in upstream bcache can't use the last element in the buffer, which was the cause of the bug: if you asked for a power of two size, it'd give you a fifo that could hold one less than what you asked for rather than allocating a buffer twice as big. Signed-off-by: Kent Overstreet Tested-by: Eric Wheeler Cc: stable@vger.kernel.org diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 6ada14b..6b93e1b 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1820,7 +1820,7 @@ static int cache_alloc(struct cache *ca) free = roundup_pow_of_two(ca->sb.nbuckets) >> 10; if (!init_fifo(&ca->free[RESERVE_BTREE], 8, GFP_KERNEL) || - !init_fifo(&ca->free[RESERVE_PRIO], prio_buckets(ca), GFP_KERNEL) || + !init_fifo_exact(&ca->free[RESERVE_PRIO], prio_buckets(ca), GFP_KERNEL) || !init_fifo(&ca->free[RESERVE_MOVINGGC], free, GFP_KERNEL) || !init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL) || !init_fifo(&ca->free_inc, free << 2, GFP_KERNEL) || -- cgit v0.10.2 From 90706094d5be614ae7285b3c96c3125bb198618c Mon Sep 17 00:00:00 2001 From: Eric Wheeler Date: Thu, 18 Aug 2016 20:15:26 -0700 Subject: bcache: pr_err: more meaningful error message when nr_stripes is invalid The original error was thought to be corruption, but was actually caused by: make-bcache --data-offset N where N was in bytes and should have been in sectors. While userspace tools should be updated to check --data-offset beyond end of volume, hopefully this will help others that might not have noticed the units. Signed-off-by: Eric Wheeler Cc: Kent Overstreet diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 6b93e1b..849ad44 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -760,7 +760,8 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size, if (!d->nr_stripes || d->nr_stripes > INT_MAX || d->nr_stripes > SIZE_MAX / sizeof(atomic_t)) { - pr_err("nr_stripes too large"); + pr_err("nr_stripes too large or invalid: %u (start sector beyond end of disk?)", + (unsigned)d->nr_stripes); return -ENOMEM; } -- cgit v0.10.2 From 039a392733600d35c80d406a98151b2a9a0a74b4 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Tue, 16 Aug 2016 18:40:18 +0300 Subject: qede: Fix Tx timeout due to xmit_more Driver uses netif_tx_queue_stopped() to make sure the xmit_more indication will be honored, but that only checks for DRV_XOFF. At the same time, it's possible that during transmission the DQL will close the transmission queue with STACK_XOFF indication. In re-configuration flows, when the threshold is relatively low, it's possible that the device has no pending tranmissions, and during tranmission the driver would miss doorbelling the HW. Since there are no pending transmission, there will never be a Tx completion [and thus the DQL would not remove the STACK_XOFF indication], eventually causing the Tx queue to timeout. While we're at it - also doorbell in case driver has to close the transmission queue on its own [although this one is less important - if the ring is full, we're bound to receive completion eventually, which means the doorbell would only be postponed and not indefinetly blocked]. Fixes: 312e06761c99 ("qede: Utilize xmit_more") Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index e4bd02e..a6eb6af 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -722,11 +722,14 @@ netdev_tx_t qede_start_xmit(struct sk_buff *skb, txq->tx_db.data.bd_prod = cpu_to_le16(qed_chain_get_prod_idx(&txq->tx_pbl)); - if (!skb->xmit_more || netif_tx_queue_stopped(netdev_txq)) + if (!skb->xmit_more || netif_xmit_stopped(netdev_txq)) qede_update_tx_producer(txq); if (unlikely(qed_chain_get_elem_left(&txq->tx_pbl) < (MAX_SKB_FRAGS + 1))) { + if (skb->xmit_more) + qede_update_tx_producer(txq); + netif_tx_stop_queue(netdev_txq); DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED, "Stop queue was called\n"); -- cgit v0.10.2 From 1423661fed2c40d6d71b5e2e3aa390f85157f9d5 Mon Sep 17 00:00:00 2001 From: David Daney Date: Tue, 16 Aug 2016 13:30:36 -0700 Subject: net: thunderx: Fix OOPs with ethtool --register-dump The ethtool_ops .get_regs function attempts to read the nonexistent register NIC_QSET_SQ_0_7_CNM_CHG, which produces a "bus error" type OOPs. Fix by not attempting to read, and removing the definition of, NIC_QSET_SQ_0_7_CNM_CHG. A zero is written into the register dump to keep the layout unchanged. Signed-off-by: David Daney Cc: # 4.4.x- Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/cavium/thunder/nic_reg.h b/drivers/net/ethernet/cavium/thunder/nic_reg.h index afb10e3..fab35a5 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_reg.h +++ b/drivers/net/ethernet/cavium/thunder/nic_reg.h @@ -170,7 +170,6 @@ #define NIC_QSET_SQ_0_7_DOOR (0x010838) #define NIC_QSET_SQ_0_7_STATUS (0x010840) #define NIC_QSET_SQ_0_7_DEBUG (0x010848) -#define NIC_QSET_SQ_0_7_CNM_CHG (0x010860) #define NIC_QSET_SQ_0_7_STAT_0_1 (0x010900) #define NIC_QSET_RBDR_0_1_CFG (0x010C00) diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c index d2d8ef2..ad4fddb 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c @@ -382,7 +382,10 @@ static void nicvf_get_regs(struct net_device *dev, p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DOOR, q); p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STATUS, q); p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DEBUG, q); - p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CNM_CHG, q); + /* Padding, was NIC_QSET_SQ_0_7_CNM_CHG, which + * produces bus errors when read + */ + p[i++] = 0; p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STAT_0_1, q); reg_offset = NIC_QSET_SQ_0_7_STAT_0_1 | (1 << 3); p[i++] = nicvf_queue_reg_read(nic, reg_offset, q); -- cgit v0.10.2 From e0d8b2908696d30583ae5764e33332e71cbbccc9 Mon Sep 17 00:00:00 2001 From: Hariprasad Shenai Date: Wed, 17 Aug 2016 14:09:28 +0530 Subject: cxgb4: Fixes resource allocation for ULD's in kdump kernel At present the code to check in kdump kernel was not disabling allocation of resources when CONFIG_CHELSIO_T4_DCB is defined, move the code outside #defines so that it gets disabled irrespective of #define, when in kdump kernel. Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index c45de49..c762a8c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -4335,6 +4335,11 @@ static void cfg_queues(struct adapter *adap) #endif int ciq_size; + /* Reduce memory usage in kdump environment, disable all offload. + */ + if (is_kdump_kernel()) + adap->params.offload = 0; + for_each_port(adap, i) n10g += is_x_10g_port(&adap2pinfo(adap, i)->link_cfg); #ifdef CONFIG_CHELSIO_T4_DCB @@ -4365,11 +4370,6 @@ static void cfg_queues(struct adapter *adap) if (q10g > netif_get_num_default_rss_queues()) q10g = netif_get_num_default_rss_queues(); - /* Reduce memory usage in kdump environment, disable all offload. - */ - if (is_kdump_kernel()) - adap->params.offload = 0; - for_each_port(adap, i) { struct port_info *pi = adap2pinfo(adap, i); -- cgit v0.10.2 From bb1fceca22492109be12640d49f5ea5a544c6bb4 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 17 Aug 2016 05:56:26 -0700 Subject: tcp: fix use after free in tcp_xmit_retransmit_queue() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When tcp_sendmsg() allocates a fresh and empty skb, it puts it at the tail of the write queue using tcp_add_write_queue_tail() Then it attempts to copy user data into this fresh skb. If the copy fails, we undo the work and remove the fresh skb. Unfortunately, this undo lacks the change done to tp->highest_sack and we can leave a dangling pointer (to a freed skb) Later, tcp_xmit_retransmit_queue() can dereference this pointer and access freed memory. For regular kernels where memory is not unmapped, this might cause SACK bugs because tcp_highest_sack_seq() is buggy, returning garbage instead of tp->snd_nxt, but with various debug features like CONFIG_DEBUG_PAGEALLOC, this can crash the kernel. This bug was found by Marco Grassi thanks to syzkaller. Fixes: 6859d49475d4 ("[TCP]: Abstract tp->highest_sack accessing & point to next skb") Reported-by: Marco Grassi Signed-off-by: Eric Dumazet Cc: Ilpo Järvinen Cc: Yuchung Cheng Cc: Neal Cardwell Acked-by: Neal Cardwell Reviewed-by: Cong Wang Signed-off-by: David S. Miller diff --git a/include/net/tcp.h b/include/net/tcp.h index c00e7d5..7717302 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1523,6 +1523,8 @@ static inline void tcp_check_send_head(struct sock *sk, struct sk_buff *skb_unli { if (sk->sk_send_head == skb_unlinked) sk->sk_send_head = NULL; + if (tcp_sk(sk)->highest_sack == skb_unlinked) + tcp_sk(sk)->highest_sack = NULL; } static inline void tcp_init_send_head(struct sock *sk) -- cgit v0.10.2 From b9f63ae7ba2de2ba19137c5757c0607ce40f3ed5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 17 Aug 2016 15:37:14 +0200 Subject: net: bgmac: fix reversed check for MII registration error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It was failing on successful registration returning meaningless errors. Signed-off-by: Rafał Miłecki Fixes: 55954f3bfdac ("net: ethernet: bgmac: move BCMA MDIO Phy code into a separate file") Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/bgmac-bcma.c b/drivers/net/ethernet/broadcom/bgmac-bcma.c index 9a9745c4..625235d 100644 --- a/drivers/net/ethernet/broadcom/bgmac-bcma.c +++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c @@ -159,7 +159,7 @@ static int bgmac_probe(struct bcma_device *core) if (!bgmac_is_bcm4707_family(core)) { mii_bus = bcma_mdio_mii_register(core, bgmac->phyaddr); - if (!IS_ERR(mii_bus)) { + if (IS_ERR(mii_bus)) { err = PTR_ERR(mii_bus); goto err; } -- cgit v0.10.2 From 60bcabd080f53561efa9288be45c128feda1a8bb Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Wed, 17 Aug 2016 15:51:55 +0200 Subject: kaweth: fix firmware download This fixes the oops discovered by the Umap2 project and Alan Stern. The intf member needs to be set before the firmware is downloaded. Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c index 770212b..37bf715 100644 --- a/drivers/net/usb/kaweth.c +++ b/drivers/net/usb/kaweth.c @@ -1029,6 +1029,7 @@ static int kaweth_probe( kaweth = netdev_priv(netdev); kaweth->dev = udev; kaweth->net = netdev; + kaweth->intf = intf; spin_lock_init(&kaweth->device_lock); init_waitqueue_head(&kaweth->term_wait); @@ -1139,8 +1140,6 @@ err_fw: dev_dbg(dev, "Initializing net device.\n"); - kaweth->intf = intf; - kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->tx_urb) goto err_free_netdev; -- cgit v0.10.2 From 575ced7f8090c1a4e91e2daf8da9352a6a1fc7a7 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Wed, 17 Aug 2016 15:51:56 +0200 Subject: kaweth: fix oops upon failed memory allocation Just return an error upon failure. Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c index 37bf715..528b9c9 100644 --- a/drivers/net/usb/kaweth.c +++ b/drivers/net/usb/kaweth.c @@ -1009,6 +1009,7 @@ static int kaweth_probe( struct net_device *netdev; const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; int result = 0; + int rv = -EIO; dev_dbg(dev, "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n", @@ -1049,6 +1050,10 @@ static int kaweth_probe( /* Download the firmware */ dev_info(dev, "Downloading firmware...\n"); kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL); + if (!kaweth->firmware_buf) { + rv = -ENOMEM; + goto err_free_netdev; + } if ((result = kaweth_download_firmware(kaweth, "kaweth/new_code.bin", 100, @@ -1203,7 +1208,7 @@ err_only_tx: err_free_netdev: free_netdev(netdev); - return -EIO; + return rv; } /**************************************************************** -- cgit v0.10.2 From 76507fdfc9b629209ae20cd469da2f6d093a507c Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Sun, 7 Aug 2016 21:01:48 +0200 Subject: dmaengine: pxa_dma: fix hotchain corner case In the case where a descriptor is chained on a running channel, and as explained in the comment in the code 10 lines above, the success of the chaining is ensured either if : - the DMA is still running - or if the chained transfer is completed Unfortunately the transfer completness test was done on the descriptor to which the transfer was chained, and not the transfer being chained at the end, ie. hot-chained. This corner case is extremely hard to trigger, as usually the DMA chain is still running, and the first case takes care of returning success of the hot-chaining. It was seen by hot-chaining several "small transfers" to a running "big transfer", not in a real-life usecase but by testing the robustness of the driver. Signed-off-by: Robert Jarzmik Signed-off-by: Vinod Koul diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index dc7850a..2093e52 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -638,7 +638,7 @@ static bool pxad_try_hotchain(struct virt_dma_chan *vc, vd_last_issued = list_entry(vc->desc_issued.prev, struct virt_dma_desc, node); pxad_desc_chain(vd_last_issued, vd); - if (is_chan_running(chan) || is_desc_completed(vd_last_issued)) + if (is_chan_running(chan) || is_desc_completed(vd)) return true; } -- cgit v0.10.2 From 98a384eca9c147f890b5ea31ae91da3769e47e07 Mon Sep 17 00:00:00 2001 From: Xunlei Pang Date: Thu, 18 Aug 2016 12:33:28 +0800 Subject: fib_trie: Fix the description of pos and bits 1) Fix one typo: s/tn/tp/ 2) Fix the description about the "u" bits. Signed-off-by: Xunlei Pang Acked-by: Alexander Duyck Signed-off-by: David S. Miller diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index febca0f..e2ffc2a 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -249,7 +249,7 @@ static inline unsigned long get_index(t_key key, struct key_vector *kv) * index into the parent's child array. That is, they will be used to find * 'n' among tp's children. * - * The bits from (n->pos + n->bits) to (tn->pos - 1) - "S" - are skipped bits + * The bits from (n->pos + n->bits) to (tp->pos - 1) - "S" - are skipped bits * for the node n. * * All the bits we have seen so far are significant to the node n. The rest @@ -258,7 +258,7 @@ static inline unsigned long get_index(t_key key, struct key_vector *kv) * The bits from (n->pos) to (n->pos + n->bits - 1) - "C" - are the index into * n's child array, and will of course be different for each child. * - * The rest of the bits, from 0 to (n->pos + n->bits), are completely unknown + * The rest of the bits, from 0 to (n->pos -1) - "u" - are completely unknown * at this point. */ -- cgit v0.10.2 From e633fc7a1347528c3b4a6bbdeb41f5d63988242c Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Thu, 11 Aug 2016 17:44:05 +0100 Subject: iommu/io-pgtable-arm-v7s: Fix attributes when splitting blocks Due to the attribute bits being all over the place in the different types of short-descriptor PTEs, when remapping an existing entry, e.g. splitting a section into pages, we take the approach of decomposing the PTE attributes back to the IOMMU API flags to start from scratch. On inspection, though, the existing code seems to have got the read-only bit backwards and ignored the XN bit. How embarrassing... Fortunately the primary user so far, the Mediatek IOMMU, both never splits blocks (because it only serves non-overlapping DMA API calls) and also ignores permissions anyway, but let's put things right before any future users trip up. Cc: Fixes: e5fc9753b1a8 ("iommu/io-pgtable: Add ARMv7 short descriptor support") Signed-off-by: Robin Murphy Signed-off-by: Will Deacon diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c index 8c61399..def8ca1 100644 --- a/drivers/iommu/io-pgtable-arm-v7s.c +++ b/drivers/iommu/io-pgtable-arm-v7s.c @@ -286,12 +286,14 @@ static int arm_v7s_pte_to_prot(arm_v7s_iopte pte, int lvl) int prot = IOMMU_READ; arm_v7s_iopte attr = pte >> ARM_V7S_ATTR_SHIFT(lvl); - if (attr & ARM_V7S_PTE_AP_RDONLY) + if (!(attr & ARM_V7S_PTE_AP_RDONLY)) prot |= IOMMU_WRITE; if ((attr & (ARM_V7S_TEX_MASK << ARM_V7S_TEX_SHIFT)) == 0) prot |= IOMMU_MMIO; else if (pte & ARM_V7S_ATTR_C) prot |= IOMMU_CACHE; + if (pte & ARM_V7S_ATTR_XN(lvl)) + prot |= IOMMU_NOEXEC; return prot; } -- cgit v0.10.2 From aea2037e0d3e23c3be1498feae29f71ca997d9e6 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 29 Jul 2016 11:15:37 +0100 Subject: iommu/arm-smmu: Fix CMDQ error handling In the unlikely event of a global command queue error, the ARM SMMUv3 driver attempts to convert the problematic command into a CMD_SYNC and resume the command queue. Unfortunately, this code is pretty badly broken: 1. It uses the index into the error string table as the CMDQ index, so we probably read the wrong entry out of the queue 2. The arguments to queue_write are the wrong way round, so we end up writing from the queue onto the stack. These happily cancel out, so the kernel is likely to stay alive, but the command queue will probably fault again when we resume. This patch fixes the error handling code to use the correct queue index and write back the CMD_SYNC to the faulting entry. Cc: Fixes: 48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices") Reported-by: Diwakar Subraveti Signed-off-by: Will Deacon diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index ce80117..330623f 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -879,7 +879,7 @@ static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu) * We may have concurrent producers, so we need to be careful * not to touch any of the shadow cmdq state. */ - queue_read(cmd, Q_ENT(q, idx), q->ent_dwords); + queue_read(cmd, Q_ENT(q, cons), q->ent_dwords); dev_err(smmu->dev, "skipping command in error state:\n"); for (i = 0; i < ARRAY_SIZE(cmd); ++i) dev_err(smmu->dev, "\t0x%016llx\n", (unsigned long long)cmd[i]); @@ -890,7 +890,7 @@ static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu) return; } - queue_write(cmd, Q_ENT(q, idx), q->ent_dwords); + queue_write(Q_ENT(q, cons), cmd, q->ent_dwords); } static void arm_smmu_cmdq_issue_cmd(struct arm_smmu_device *smmu, -- cgit v0.10.2 From 7611da865c1060b2a7c87a15de663a59035747f8 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 18 Aug 2016 15:41:58 -0700 Subject: irqchip/gicv3-its: Disable the ITS before initializing it When starting a kexec/kdump kernel, the GIC ITS will already have been enabled. According to the ARM Generic Interrupt Controller Architecture Specification (GIC architecture Version 3.0 and version 4.0), writing to GITS_BASER or GITS_CBASER is "UNPREDICTABLE" when the ITS is enabled. On Cavium Thunder systems, this prevents the ITS from being initializing in the kexec/kdump kernel, resulting in failure to register/enable interrupts for all devices. The fix is to disable the ITS if it is not already in the disabled state. This allows the ITS to be properly initialized and then re-enabled in the kexec/kdump kernel. Acked-by: Marc Zyngier Signed-off-by: David Daney Signed-off-by: Marc Zyngier diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 7ceaba8..36b9c28 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -1545,7 +1545,12 @@ static int its_force_quiescent(void __iomem *base) u32 val; val = readl_relaxed(base + GITS_CTLR); - if (val & GITS_CTLR_QUIESCENT) + /* + * GIC architecture specification requires the ITS to be both + * disabled and quiescent for writes to GITS_BASER or + * GITS_CBASER to not have UNPREDICTABLE results. + */ + if ((val & GITS_CTLR_QUIESCENT) && !(val & GITS_CTLR_ENABLE)) return 0; /* Disable the generation of all interrupts to this ITS */ -- cgit v0.10.2 From 3714ce1d6655098ee69ede632883e5874d67e4ab Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 5 Aug 2016 19:49:45 +0100 Subject: iommu/arm-smmu: Disable stalling faults for all endpoints Enabling stalling faults can result in hardware deadlock on poorly designed systems, particularly those with a PCI root complex upstream of the SMMU. Although it's not really Linux's job to save hardware integrators from their own misfortune, it *is* our job to stop userspace (e.g. VFIO clients) from hosing the system for everybody else, even if they might already be required to have elevated privileges. Given that the fault handling code currently executes entirely in IRQ context, there is nothing that can sensibly be done to recover from things like page faults anyway, so let's rip this code out for now and avoid the potential for deadlock. Cc: Fixes: 48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices") Reported-by: Matt Evans Signed-off-by: Will Deacon diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 4f49fe2..2db74eb 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -686,8 +686,7 @@ static struct iommu_gather_ops arm_smmu_gather_ops = { static irqreturn_t arm_smmu_context_fault(int irq, void *dev) { - int flags, ret; - u32 fsr, fsynr, resume; + u32 fsr, fsynr; unsigned long iova; struct iommu_domain *domain = dev; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); @@ -701,34 +700,15 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) if (!(fsr & FSR_FAULT)) return IRQ_NONE; - if (fsr & FSR_IGN) - dev_err_ratelimited(smmu->dev, - "Unexpected context fault (fsr 0x%x)\n", - fsr); - fsynr = readl_relaxed(cb_base + ARM_SMMU_CB_FSYNR0); - flags = fsynr & FSYNR0_WNR ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ; - iova = readq_relaxed(cb_base + ARM_SMMU_CB_FAR); - if (!report_iommu_fault(domain, smmu->dev, iova, flags)) { - ret = IRQ_HANDLED; - resume = RESUME_RETRY; - } else { - dev_err_ratelimited(smmu->dev, - "Unhandled context fault: iova=0x%08lx, fsynr=0x%x, cb=%d\n", - iova, fsynr, cfg->cbndx); - ret = IRQ_NONE; - resume = RESUME_TERMINATE; - } - - /* Clear the faulting FSR */ - writel(fsr, cb_base + ARM_SMMU_CB_FSR); - /* Retry or terminate any stalled transactions */ - if (fsr & FSR_SS) - writel_relaxed(resume, cb_base + ARM_SMMU_CB_RESUME); + dev_err_ratelimited(smmu->dev, + "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cb=%d\n", + fsr, iova, fsynr, cfg->cbndx); - return ret; + writel(fsr, cb_base + ARM_SMMU_CB_FSR); + return IRQ_HANDLED; } static irqreturn_t arm_smmu_global_fault(int irq, void *dev) @@ -837,7 +817,7 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain, } /* SCTLR */ - reg = SCTLR_CFCFG | SCTLR_CFIE | SCTLR_CFRE | SCTLR_M | SCTLR_EAE_SBOP; + reg = SCTLR_CFIE | SCTLR_CFRE | SCTLR_M | SCTLR_EAE_SBOP; if (stage1) reg |= SCTLR_S1_ASIDPNE; #ifdef __BIG_ENDIAN -- cgit v0.10.2 From 5bc0a11664e17e9f9551983f5b660bd48b57483c Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 16 Aug 2016 14:29:16 +0100 Subject: iommu/arm-smmu: Don't BUG() if we find aborting STEs with disable_bypass The disable_bypass cmdline option changes the SMMUv3 driver to put down faulting stream table entries by default, as opposed to bypassing transactions from unconfigured devices. In this mode of operation, it is entirely expected to see aborting entries in the stream table if and when we come to installing a valid translation, so don't trigger a BUG() as a result of misdiagnosing these entries as stream table corruption. Cc: Fixes: 48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices") Tested-by: Robin Murphy Reported-by: Robin Murphy Reviewed-by: Robin Murphy Signed-off-by: Will Deacon diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 330623f..641e887 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1034,6 +1034,9 @@ static void arm_smmu_write_strtab_ent(struct arm_smmu_device *smmu, u32 sid, case STRTAB_STE_0_CFG_S2_TRANS: ste_live = true; break; + case STRTAB_STE_0_CFG_ABORT: + if (disable_bypass) + break; default: BUG(); /* STE corruption */ } -- cgit v0.10.2 From 7a665d2f60b457c0d77b3e4f01e21c55ffc57069 Mon Sep 17 00:00:00 2001 From: Daniel Verkamp Date: Tue, 28 Jun 2016 11:20:23 -0700 Subject: nvme-fabrics: change NQN UUID to big-endian format NVM Express 1.2.1 section 7.9, NVMe Qualified Names, specifies that the UUID format of NQN uses a UUID based on RFC 4122. RFC 4122 specifies that the UUID is encoded in big-endian byte order. Switch the NVMe over Fabrics host ID field from little-endian UUID to big-endian UUID to match the specification. Signed-off-by: Daniel Verkamp Reviewed-by: Jay Freyensee Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index 020302c..be0b106 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -56,7 +56,7 @@ static struct nvmf_host *nvmf_host_add(const char *hostnqn) kref_init(&host->ref); memcpy(host->nqn, hostnqn, NVMF_NQN_SIZE); - uuid_le_gen(&host->id); + uuid_be_gen(&host->id); list_add_tail(&host->list, &nvmf_hosts); out_unlock: @@ -73,9 +73,9 @@ static struct nvmf_host *nvmf_host_default(void) return NULL; kref_init(&host->ref); - uuid_le_gen(&host->id); + uuid_be_gen(&host->id); snprintf(host->nqn, NVMF_NQN_SIZE, - "nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUl", &host->id); + "nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUb", &host->id); mutex_lock(&nvmf_hosts_mutex); list_add_tail(&host->list, &nvmf_hosts); @@ -382,7 +382,7 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl) if (!data) return -ENOMEM; - memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_le)); + memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_be)); data->cntlid = cpu_to_le16(0xffff); strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE); strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE); @@ -441,7 +441,7 @@ int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid) if (!data) return -ENOMEM; - memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_le)); + memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_be)); data->cntlid = cpu_to_le16(ctrl->cntlid); strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE); strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE); diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h index 89df52c..46e460a 100644 --- a/drivers/nvme/host/fabrics.h +++ b/drivers/nvme/host/fabrics.h @@ -34,7 +34,7 @@ struct nvmf_host { struct kref ref; struct list_head list; char nqn[NVMF_NQN_SIZE]; - uuid_le id; + uuid_be id; }; /** diff --git a/include/linux/nvme.h b/include/linux/nvme.h index d8b37ba..7676557 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -794,7 +794,7 @@ struct nvmf_connect_command { }; struct nvmf_connect_data { - uuid_le hostid; + uuid_be hostid; __le16 cntlid; char resv4[238]; char subsysnqn[NVMF_NQN_FIELD_LEN]; -- cgit v0.10.2 From d1e81428826221d7ff8e4d83db784d099cd232a7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 18 Aug 2016 19:32:59 +0100 Subject: ASoC: core: Clean up DAPM before the card debugfs Both the card and DAPM cleanups recursively delete their debugfs directories. Since the DAPM debugfs subdirectory for the card is located within the card debugfs this means we end up trying to double free the DAPM subdirectory. Reorder the cleanup to free the card debugfs after we've cleaned up DAPM and it has deleted its own subdirectory. Reported-by: Russell King - ARM Linux Tested-by: Russell King Signed-off-by: Mark Brown diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 16369ca..66a33f1 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2083,14 +2083,13 @@ static int soc_cleanup_card_resources(struct snd_soc_card *card) /* remove auxiliary devices */ soc_remove_aux_devices(card); + snd_soc_dapm_free(&card->dapm); soc_cleanup_card_debugfs(card); /* remove the card */ if (card->remove) card->remove(card); - snd_soc_dapm_free(&card->dapm); - snd_card_free(card->snd_card); return 0; -- cgit v0.10.2 From 06777c4ec78a43977b63f1d5045def057227c2c5 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Sun, 7 Aug 2016 21:01:49 +0200 Subject: dmaengine: pxa_dma: fix debug message In a very tight timeframe, the debug message in the transfer completion handler can be misleading, as the completion test report can change just after the message, and the code flow cannot be deduced from the debug message. This is just a cleanup to make debugging easier. Signed-off-by: Robert Jarzmik Signed-off-by: Vinod Koul diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 2093e52..3f56f9c 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -671,6 +671,7 @@ static irqreturn_t pxad_chan_handler(int irq, void *dev_id) struct virt_dma_desc *vd, *tmp; unsigned int dcsr; unsigned long flags; + bool vd_completed; dma_cookie_t last_started = 0; BUG_ON(!chan); @@ -681,15 +682,17 @@ static irqreturn_t pxad_chan_handler(int irq, void *dev_id) spin_lock_irqsave(&chan->vc.lock, flags); list_for_each_entry_safe(vd, tmp, &chan->vc.desc_issued, node) { + vd_completed = is_desc_completed(vd); dev_dbg(&chan->vc.chan.dev->device, - "%s(): checking txd %p[%x]: completed=%d\n", - __func__, vd, vd->tx.cookie, is_desc_completed(vd)); + "%s(): checking txd %p[%x]: completed=%d dcsr=0x%x\n", + __func__, vd, vd->tx.cookie, vd_completed, + dcsr); last_started = vd->tx.cookie; if (to_pxad_sw_desc(vd)->cyclic) { vchan_cyclic_callback(vd); break; } - if (is_desc_completed(vd)) { + if (vd_completed) { list_del(&vd->node); vchan_cookie_complete(vd); } else { -- cgit v0.10.2 From 98096d8a787f05b1afe3869aa01e84981915c81d Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 18 Aug 2016 11:16:35 -0700 Subject: nvme-fabrics: get a reference when reusing a nvme_host structure Without this we'll get a use after free after connecting two controller using the same hostnqn and then disconnecting one of them. Signed-off-by: Christoph Hellwig Reviewed-by: Jay Freyensee Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index be0b106..4eff491 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -47,8 +47,10 @@ static struct nvmf_host *nvmf_host_add(const char *hostnqn) mutex_lock(&nvmf_hosts_mutex); host = __nvmf_host_find(hostnqn); - if (host) + if (host) { + kref_get(&host->ref); goto out_unlock; + } host = kmalloc(sizeof(*host), GFP_KERNEL); if (!host) -- cgit v0.10.2 From aa71987472a974f4f6dc4be377720564079ef42e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 18 Aug 2016 11:16:36 -0700 Subject: nvme: fabrics drivers don't need the nvme-pci driver So select the NVME_CORE symbol instead of depending on BLK_DEV_NVME. Signed-off-by: Christoph Hellwig Reviewed-by: Jay Freyensee Signed-off-by: Sagi Grimberg diff --git a/drivers/nvme/host/Kconfig b/drivers/nvme/host/Kconfig index db39d53..0c644f7 100644 --- a/drivers/nvme/host/Kconfig +++ b/drivers/nvme/host/Kconfig @@ -31,7 +31,7 @@ config NVME_FABRICS config NVME_RDMA tristate "NVM Express over Fabrics RDMA host driver" depends on INFINIBAND - depends on BLK_DEV_NVME + select NVME_CORE select NVME_FABRICS select SG_POOL help diff --git a/drivers/nvme/target/Kconfig b/drivers/nvme/target/Kconfig index a5c31cb..3a5b9d0 100644 --- a/drivers/nvme/target/Kconfig +++ b/drivers/nvme/target/Kconfig @@ -15,8 +15,8 @@ config NVME_TARGET config NVME_TARGET_LOOP tristate "NVMe loopback device support" - depends on BLK_DEV_NVME depends on NVME_TARGET + select NVME_CORE select NVME_FABRICS select SG_POOL help -- cgit v0.10.2 From 2527ecc9195e9c66252af24c4689e8a67cd4ccb9 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 16 Aug 2016 09:58:25 +0200 Subject: gpio: Fix OF build problem on UM The UserMode (UM) Linux build was failing in gpiolib-of as it requires ioremap()/iounmap() to exist, which is absent from UM. The non-existence of IO memory is negatively defined as CONFIG_NO_IOMEM which means we need to depend on HAS_IOMEM. Cc: stable@vger.kernel.org Cc: Geert Uytterhoeven Reported-by: kbuild test robot Signed-off-by: Linus Walleij diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 98dd47a..24f833c 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -50,6 +50,7 @@ config GPIO_DEVRES config OF_GPIO def_bool y depends on OF + depends on HAS_IOMEM config GPIO_ACPI def_bool y -- cgit v0.10.2 From 048c28c91e56781082bc17d181e460b81e7e8bcb Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 16 Aug 2016 12:07:31 +0200 Subject: gpio: make any OF dependent driver depend on OF_GPIO The drivers that depend on OF but not OF_GPIO are wreaking havoc with the autobuilders for archs that have all requirements for OF but not for OF_GPIO, particularly the UM (Usermode) arch does not have iomem (NO_IOMEM) which result in configuring GPIOLIB but without OF_GPIO which is wrong if the driver is using the .of_node of the gpiochip, which only appears with OF_GPIO. After a brief look at the drivers just depending on OF it seems most if not all of them actually require stuff from gpiolib-of so the dependency is wrong in the first place. This simply patches the Kconfig so that all GPIO drivers using OF depend on OF_GPIO rather than just OF. Cc: Rabin Vincent Cc: Pramod Gurav Cc: Andreas Larsson Cc: Gregory CLEMENT Cc: Thierry Reding Cc: Laxman Dewangan Cc: Alexandre Courbot Cc: Geert Uytterhoeven Cc: Phil Reid Signed-off-by: Linus Walleij diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 24f833c..66a9410 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -189,7 +189,7 @@ config GPIO_EP93XX config GPIO_ETRAXFS bool "Axis ETRAX FS General I/O" depends on CRIS || COMPILE_TEST - depends on OF + depends on OF_GPIO select GPIO_GENERIC select GPIOLIB_IRQCHIP help @@ -215,7 +215,7 @@ config GPIO_GENERIC_PLATFORM config GPIO_GRGPIO tristate "Aeroflex Gaisler GRGPIO support" - depends on OF + depends on OF_GPIO select GPIO_GENERIC select IRQ_DOMAIN help @@ -313,7 +313,7 @@ config GPIO_MPC8XXX config GPIO_MVEBU def_bool y depends on PLAT_ORION - depends on OF + depends on OF_GPIO select GENERIC_IRQ_CHIP config GPIO_MXC @@ -406,7 +406,7 @@ config GPIO_TEGRA bool "NVIDIA Tegra GPIO support" default ARCH_TEGRA depends on ARCH_TEGRA || COMPILE_TEST - depends on OF + depends on OF_GPIO help Say yes here to support GPIO pins on NVIDIA Tegra SoCs. @@ -1100,7 +1100,7 @@ menu "SPI GPIO expanders" config GPIO_74X164 tristate "74x164 serial-in/parallel-out 8-bits shift register" - depends on OF + depends on OF_GPIO help Driver for 74x164 compatible serial-in/parallel-out 8-outputs shift registers. This driver can be used to provide access -- cgit v0.10.2 From a305a4387acb01cecadeeea5151c049a022a1bfc Mon Sep 17 00:00:00 2001 From: Brendan Jackman Date: Wed, 17 Aug 2016 16:14:59 +0100 Subject: thermal: cpu_cooling: Fix NULL dereference in cpufreq_state2power Currently all CPU cooling devices share a `struct thermal_cooling_device_ops` instance. The thermal core uses the presence of functions in this struct to determine if a cooling device has a power model (see cdev_is_power_actor). cpu_cooling.c adds the power model functions to the shared struct when a device is registered with a power model. Therefore, if a CPU cooling device is registered using [of_]cpufreq_power_cooling_register, _all_ devices will be determined to have a power model, including any registered with [of_]cpufreq_cooling_register. This can result in cpufreq_state2power being called on a device where dyn_power_table is NULL. With this commit, instead of having a shared thermal_cooling_device_ops which is mutated, we have two versions: one with the power functions and one without. Signed-off-by: Brendan Jackman Cc: Amit Daniel Kachhap Cc: Viresh Kumar Cc: Javi Merino Acked-by: Viresh Kumar Acked-by: Javi Merino Signed-off-by: Zhang Rui diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 3788ed7..a32b417 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -740,12 +740,22 @@ static int cpufreq_power2state(struct thermal_cooling_device *cdev, } /* Bind cpufreq callbacks to thermal cooling device ops */ + static struct thermal_cooling_device_ops cpufreq_cooling_ops = { .get_max_state = cpufreq_get_max_state, .get_cur_state = cpufreq_get_cur_state, .set_cur_state = cpufreq_set_cur_state, }; +static struct thermal_cooling_device_ops cpufreq_power_cooling_ops = { + .get_max_state = cpufreq_get_max_state, + .get_cur_state = cpufreq_get_cur_state, + .set_cur_state = cpufreq_set_cur_state, + .get_requested_power = cpufreq_get_requested_power, + .state2power = cpufreq_state2power, + .power2state = cpufreq_power2state, +}; + /* Notifier for cpufreq policy change */ static struct notifier_block thermal_cpufreq_notifier_block = { .notifier_call = cpufreq_thermal_notifier, @@ -795,6 +805,7 @@ __cpufreq_cooling_register(struct device_node *np, struct cpumask temp_mask; unsigned int freq, i, num_cpus; int ret; + struct thermal_cooling_device_ops *cooling_ops; cpumask_and(&temp_mask, clip_cpus, cpu_online_mask); policy = cpufreq_cpu_get(cpumask_first(&temp_mask)); @@ -850,10 +861,6 @@ __cpufreq_cooling_register(struct device_node *np, cpumask_copy(&cpufreq_dev->allowed_cpus, clip_cpus); if (capacitance) { - cpufreq_cooling_ops.get_requested_power = - cpufreq_get_requested_power; - cpufreq_cooling_ops.state2power = cpufreq_state2power; - cpufreq_cooling_ops.power2state = cpufreq_power2state; cpufreq_dev->plat_get_static_power = plat_static_func; ret = build_dyn_power_table(cpufreq_dev, capacitance); @@ -861,6 +868,10 @@ __cpufreq_cooling_register(struct device_node *np, cool_dev = ERR_PTR(ret); goto free_table; } + + cooling_ops = &cpufreq_power_cooling_ops; + } else { + cooling_ops = &cpufreq_cooling_ops; } ret = get_idr(&cpufreq_idr, &cpufreq_dev->id); @@ -885,7 +896,7 @@ __cpufreq_cooling_register(struct device_node *np, cpufreq_dev->id); cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev, - &cpufreq_cooling_ops); + cooling_ops); if (IS_ERR(cool_dev)) goto remove_idr; -- cgit v0.10.2 From 57027db00d1094d0abd5776899b00ca55d42d37c Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Mon, 15 Aug 2016 11:22:40 +0200 Subject: Thermal-INT3406: Delete owner assignment The field "owner" is set by core. Thus delete an extra initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring Signed-off-by: Zhang Rui diff --git a/drivers/thermal/int340x_thermal/int3406_thermal.c b/drivers/thermal/int340x_thermal/int3406_thermal.c index a578cd2..1891f34 100644 --- a/drivers/thermal/int340x_thermal/int3406_thermal.c +++ b/drivers/thermal/int340x_thermal/int3406_thermal.c @@ -225,7 +225,6 @@ static struct platform_driver int3406_thermal_driver = { .remove = int3406_thermal_remove, .driver = { .name = "int3406 thermal", - .owner = THIS_MODULE, .acpi_match_table = int3406_thermal_match, }, }; -- cgit v0.10.2 From 55f2ac33adc78d429c470c9ca05e18c36dc24922 Mon Sep 17 00:00:00 2001 From: Caesar Wang Date: Tue, 3 May 2016 20:07:41 +0800 Subject: thermal: trivial: fix the typo See the thermal code, the obvious typo from my editor. Signed-off-by: Caesar Wang Signed-off-by: Eduardo Valentin Signed-off-by: Zhang Rui diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt index 41b817f..88b6ea1 100644 --- a/Documentation/devicetree/bindings/thermal/thermal.txt +++ b/Documentation/devicetree/bindings/thermal/thermal.txt @@ -62,7 +62,7 @@ For more examples of cooling devices, refer to the example sections below. Required properties: - #cooling-cells: Used to provide cooling device specific information Type: unsigned while referring to it. Must be at least 2, in order - Size: one cell to specify minimum and maximum cooling state used + Size: one cell to specify minimum and maximum cooling state used in the reference. The first cell is the minimum cooling state requested and the second cell is the maximum cooling state requested in the reference. @@ -119,7 +119,7 @@ Required properties: Optional property: - contribution: The cooling contribution to the thermal zone of the Type: unsigned referred cooling device at the referred trip point. - Size: one cell The contribution is a ratio of the sum + Size: one cell The contribution is a ratio of the sum of all cooling contributions within a thermal zone. Note: Using the THERMAL_NO_LIMIT (-1UL) constant in the cooling-device phandle @@ -145,7 +145,7 @@ Required properties: Size: one cell - thermal-sensors: A list of thermal sensor phandles and sensor specifier - Type: list of used while monitoring the thermal zone. + Type: list of used while monitoring the thermal zone. phandles + sensor specifier @@ -473,7 +473,7 @@ thermal-zones { <&adc>; /* pcb north */ /* hotspot = 100 * bandgap - 120 * adc + 484 */ - coefficients = <100 -120 484>; + coefficients = <100 -120 484>; trips { ... @@ -502,7 +502,7 @@ from the ADC sensor. The binding would be then: thermal-sensors = <&adc>; /* hotspot = 1 * adc + 6000 */ - coefficients = <1 6000>; + coefficients = <1 6000>; (d) - Board thermal -- cgit v0.10.2 From 829bc78aa7628e81a9de717316b85cbee3c5eb86 Mon Sep 17 00:00:00 2001 From: Corentin LABBE Date: Tue, 16 Aug 2016 10:51:38 +0200 Subject: thermal: imx: fix a possible NULL dereference of_match_device could return NULL, and so cause a NULL pointer dereference later at line 472: data->socdata = of_id->data; For fixing this problem, we use of_device_get_match_data(), this will simplify the code a little by using a standard function for getting the match data. Reported-by: coverity (CID 1324128) Signed-off-by: LABBE Corentin Signed-off-by: Zhang Rui diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index c5547bd..e473548 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -471,8 +471,6 @@ MODULE_DEVICE_TABLE(of, of_imx_thermal_match); static int imx_thermal_probe(struct platform_device *pdev) { - const struct of_device_id *of_id = - of_match_device(of_imx_thermal_match, &pdev->dev); struct imx_thermal_data *data; struct regmap *map; int measure_freq; @@ -490,7 +488,7 @@ static int imx_thermal_probe(struct platform_device *pdev) } data->tempmon = map; - data->socdata = of_id->data; + data->socdata = of_device_get_match_data(&pdev->dev); /* make sure the IRQ flag is clear before enabling irq on i.MX6SX */ if (data->socdata->version == TEMPMON_IMX6SX) { -- cgit v0.10.2 From 21eb45db282317543ca46c821bbb8d5075e02cbe Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 19 Aug 2016 09:34:24 +0300 Subject: ASoC: omap-abe-twl6040: Correct dmic-codec device registration The dmic-codec was registered within the platform_driver's probe function, which can cause deferred probe to run in loops as reported and analyzed by Russell King. Use module_init/exit in the driver and handle the dmic-codec device registration and removal at that level instead of the platform_driver probe/remove. Signed-off-by: Peter Ujfalusi Reported-by: Russell King Tested-by: Russell King Signed-off-by: Mark Brown diff --git a/sound/soc/omap/omap-abe-twl6040.c b/sound/soc/omap/omap-abe-twl6040.c index 0843a68..f61b3b5 100644 --- a/sound/soc/omap/omap-abe-twl6040.c +++ b/sound/soc/omap/omap-abe-twl6040.c @@ -38,10 +38,10 @@ struct abe_twl6040 { int jack_detection; /* board can detect jack events */ int mclk_freq; /* MCLK frequency speed for twl6040 */ - - struct platform_device *dmic_codec_dev; }; +struct platform_device *dmic_codec_dev; + static int omap_abe_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { @@ -258,8 +258,6 @@ static int omap_abe_probe(struct platform_device *pdev) if (priv == NULL) return -ENOMEM; - priv->dmic_codec_dev = ERR_PTR(-EINVAL); - if (snd_soc_of_parse_card_name(card, "ti,model")) { dev_err(&pdev->dev, "Card name is not provided\n"); return -ENODEV; @@ -284,13 +282,6 @@ static int omap_abe_probe(struct platform_device *pdev) num_links = 2; abe_twl6040_dai_links[1].cpu_of_node = dai_node; abe_twl6040_dai_links[1].platform_of_node = dai_node; - - priv->dmic_codec_dev = platform_device_register_simple( - "dmic-codec", -1, NULL, 0); - if (IS_ERR(priv->dmic_codec_dev)) { - dev_err(&pdev->dev, "Can't instantiate dmic-codec\n"); - return PTR_ERR(priv->dmic_codec_dev); - } } else { num_links = 1; } @@ -299,16 +290,14 @@ static int omap_abe_probe(struct platform_device *pdev) of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq); if (!priv->mclk_freq) { dev_err(&pdev->dev, "MCLK frequency not provided\n"); - ret = -EINVAL; - goto err_unregister; + return -EINVAL; } card->fully_routed = 1; if (!priv->mclk_freq) { dev_err(&pdev->dev, "MCLK frequency missing\n"); - ret = -ENODEV; - goto err_unregister; + return -ENODEV; } card->dai_link = abe_twl6040_dai_links; @@ -317,17 +306,9 @@ static int omap_abe_probe(struct platform_device *pdev) snd_soc_card_set_drvdata(card, priv); ret = snd_soc_register_card(card); - if (ret) { + if (ret) dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); - goto err_unregister; - } - - return 0; - -err_unregister: - if (!IS_ERR(priv->dmic_codec_dev)) - platform_device_unregister(priv->dmic_codec_dev); return ret; } @@ -335,13 +316,9 @@ err_unregister: static int omap_abe_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); - struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card); snd_soc_unregister_card(card); - if (!IS_ERR(priv->dmic_codec_dev)) - platform_device_unregister(priv->dmic_codec_dev); - return 0; } @@ -361,7 +338,33 @@ static struct platform_driver omap_abe_driver = { .remove = omap_abe_remove, }; -module_platform_driver(omap_abe_driver); +static int __init omap_abe_init(void) +{ + int ret; + + dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL, + 0); + if (IS_ERR(dmic_codec_dev)) { + pr_err("%s: dmic-codec device registration failed\n", __func__); + return PTR_ERR(dmic_codec_dev); + } + + ret = platform_driver_register(&omap_abe_driver); + if (ret) { + pr_err("%s: platform driver registration failed\n", __func__); + platform_device_unregister(dmic_codec_dev); + } + + return ret; +} +module_init(omap_abe_init); + +static void __exit omap_abe_exit(void) +{ + platform_driver_unregister(&omap_abe_driver); + platform_device_unregister(dmic_codec_dev); +} +module_exit(omap_abe_exit); MODULE_AUTHOR("Misael Lopez Cruz "); MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec"); -- cgit v0.10.2 From ba913e4f72fc9cfd03dad968dfb110eb49211d80 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 19 Aug 2016 14:30:29 +0100 Subject: MIPS: KVM: Check for pfn noslot case MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When mapping a page into the guest we error check using is_error_pfn(), however this doesn't detect a value of KVM_PFN_NOSLOT, indicating an error HVA for the page. This can only happen on MIPS right now due to unusual memslot management (e.g. being moved / removed / resized), or with an Enhanced Virtual Memory (EVA) configuration where the default KVM_HVA_ERR_* and kvm_is_error_hva() definitions are unsuitable (fixed in a later patch). This case will be treated as a pfn of zero, mapping the first page of physical memory into the guest. It would appear the MIPS KVM port wasn't updated prior to being merged (in v3.10) to take commit 81c52c56e2b4 ("KVM: do not treat noslot pfn as a error pfn") into account (merged v3.8), which converted a bunch of is_error_pfn() calls to is_error_noslot_pfn(). Switch to using is_error_noslot_pfn() instead to catch this case properly. Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Signed-off-by: James Hogan Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: # 3.10.y- Signed-off-by: Paolo Bonzini diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index 6cfdcf5..121008c 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -40,7 +40,7 @@ static int kvm_mips_map_page(struct kvm *kvm, gfn_t gfn) srcu_idx = srcu_read_lock(&kvm->srcu); pfn = gfn_to_pfn(kvm, gfn); - if (is_error_pfn(pfn)) { + if (is_error_noslot_pfn(pfn)) { kvm_err("Couldn't get pfn for gfn %#llx!\n", gfn); err = -EFAULT; goto out; -- cgit v0.10.2 From 13f479b9df4e2bbf2d16e7e1b02f3f55f70e2455 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Wed, 17 Aug 2016 09:46:42 +0200 Subject: drm/radeon: fix radeon_move_blit on 32bit systems MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This bug seems to be present for a very long time. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 0c00e19..c2e0a1c 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -263,8 +263,8 @@ static int radeon_move_blit(struct ttm_buffer_object *bo, rdev = radeon_get_rdev(bo->bdev); ridx = radeon_copy_ring_index(rdev); - old_start = old_mem->start << PAGE_SHIFT; - new_start = new_mem->start << PAGE_SHIFT; + old_start = (u64)old_mem->start << PAGE_SHIFT; + new_start = (u64)new_mem->start << PAGE_SHIFT; switch (old_mem->mem_type) { case TTM_PL_VRAM: -- cgit v0.10.2 From 815d27a46f3119f74fe01fe10bf683aa5bc55597 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Wed, 17 Aug 2016 09:45:25 +0200 Subject: drm/amdgpu: fix amdgpu_move_blit on 32bit systems MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This bug seems to be present for a very long time. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 9b61c8b..141bfca 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -251,8 +251,8 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, adev = amdgpu_get_adev(bo->bdev); ring = adev->mman.buffer_funcs_ring; - old_start = old_mem->start << PAGE_SHIFT; - new_start = new_mem->start << PAGE_SHIFT; + old_start = (u64)old_mem->start << PAGE_SHIFT; + new_start = (u64)new_mem->start << PAGE_SHIFT; switch (old_mem->mem_type) { case TTM_PL_VRAM: -- cgit v0.10.2 From 847927bb3db2b18744ddec1b4fbb274ac7e05199 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Wed, 17 Aug 2016 14:10:37 +0200 Subject: drm/amdgpu: fix sdma_v2_4_ring_test_ib MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Typo in checking the return code. Signed-off-by: Christian König Reviewed-by: Alex Deucher Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c index 1351c7e..a64715d 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c @@ -714,7 +714,7 @@ static int sdma_v2_4_ring_test_ib(struct amdgpu_ring *ring, long timeout) DRM_ERROR("amdgpu: IB test timed out\n"); r = -ETIMEDOUT; goto err1; - } else if (r) { + } else if (r < 0) { DRM_ERROR("amdgpu: fence wait failed (%ld).\n", r); goto err1; } -- cgit v0.10.2 From bdf001374bfe12677ae6ec5076452493fb682012 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Tue, 16 Aug 2016 19:52:35 +0200 Subject: drm/amdgpu: fix timeout value check in amd_sched_job_recovery MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Could be that we don't actually have a timeout set. Signed-off-by: Christian König Acked-by: Alex Deucher Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c index ef312bb..963a24d 100644 --- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c +++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c @@ -405,7 +405,7 @@ void amd_sched_job_recovery(struct amd_gpu_scheduler *sched) spin_lock(&sched->job_list_lock); s_job = list_first_entry_or_null(&sched->ring_mirror_list, struct amd_sched_job, node); - if (s_job) + if (s_job && sched->timeout != MAX_SCHEDULE_TIMEOUT) schedule_delayed_work(&s_job->work_tdr, sched->timeout); list_for_each_entry_safe(s_job, tmp, &sched->ring_mirror_list, node) { -- cgit v0.10.2 From 6c647b0eb01cd7326dca093590f5e123e3c68b9c Mon Sep 17 00:00:00 2001 From: Bob Liu Date: Fri, 1 Jul 2016 15:45:57 -0400 Subject: xen-blkfront: fix places not updated after introducing 64KB page granularity MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Two places didn't get updated when 64KB page granularity was introduced, this patch fix them. Signed-off-by: Bob Liu Acked-by: Roger Pau Monné Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index be4fea6..6a1756d 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1315,7 +1315,7 @@ free_shadow: rinfo->ring_ref[i] = GRANT_INVALID_REF; } } - free_pages((unsigned long)rinfo->ring.sring, get_order(info->nr_ring_pages * PAGE_SIZE)); + free_pages((unsigned long)rinfo->ring.sring, get_order(info->nr_ring_pages * XEN_PAGE_SIZE)); rinfo->ring.sring = NULL; if (rinfo->irq) @@ -2008,7 +2008,7 @@ static int blkif_recover(struct blkfront_info *info) blkfront_gather_backend_features(info); segs = info->max_indirect_segments ? : BLKIF_MAX_SEGMENTS_PER_REQUEST; - blk_queue_max_segments(info->rq, segs); + blk_queue_max_segments(info->rq, segs / GRANTS_PER_PSEG); for (r_index = 0; r_index < info->nr_rings; r_index++) { struct blkfront_ring_info *rinfo = &info->rinfo[r_index]; -- cgit v0.10.2 From 172335ada40ce26806e514c83a504b45c14a4139 Mon Sep 17 00:00:00 2001 From: Bob Liu Date: Fri, 1 Jul 2016 17:43:39 -0400 Subject: xen-blkfront: introduce blkif_set_queue_limits() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit blk_mq_update_nr_hw_queues() reset all queue limits to default which it's not as xen-blkfront expected, introducing blkif_set_queue_limits() to reset limits with initial correct values. Signed-off-by: Bob Liu Acked-by: Roger Pau Monné Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 6a1756d..f84e220 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -189,6 +189,8 @@ struct blkfront_info struct mutex mutex; struct xenbus_device *xbdev; struct gendisk *gd; + u16 sector_size; + unsigned int physical_sector_size; int vdevice; blkif_vdev_t handle; enum blkif_state connected; @@ -910,9 +912,45 @@ static struct blk_mq_ops blkfront_mq_ops = { .map_queue = blk_mq_map_queue, }; +static void blkif_set_queue_limits(struct blkfront_info *info) +{ + struct request_queue *rq = info->rq; + struct gendisk *gd = info->gd; + unsigned int segments = info->max_indirect_segments ? : + BLKIF_MAX_SEGMENTS_PER_REQUEST; + + queue_flag_set_unlocked(QUEUE_FLAG_VIRT, rq); + + if (info->feature_discard) { + queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, rq); + blk_queue_max_discard_sectors(rq, get_capacity(gd)); + rq->limits.discard_granularity = info->discard_granularity; + rq->limits.discard_alignment = info->discard_alignment; + if (info->feature_secdiscard) + queue_flag_set_unlocked(QUEUE_FLAG_SECERASE, rq); + } + + /* Hard sector size and max sectors impersonate the equiv. hardware. */ + blk_queue_logical_block_size(rq, info->sector_size); + blk_queue_physical_block_size(rq, info->physical_sector_size); + blk_queue_max_hw_sectors(rq, (segments * XEN_PAGE_SIZE) / 512); + + /* Each segment in a request is up to an aligned page in size. */ + blk_queue_segment_boundary(rq, PAGE_SIZE - 1); + blk_queue_max_segment_size(rq, PAGE_SIZE); + + /* Ensure a merged request will fit in a single I/O ring slot. */ + blk_queue_max_segments(rq, segments / GRANTS_PER_PSEG); + + /* Make sure buffer addresses are sector-aligned. */ + blk_queue_dma_alignment(rq, 511); + + /* Make sure we don't use bounce buffers. */ + blk_queue_bounce_limit(rq, BLK_BOUNCE_ANY); +} + static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size, - unsigned int physical_sector_size, - unsigned int segments) + unsigned int physical_sector_size) { struct request_queue *rq; struct blkfront_info *info = gd->private_data; @@ -944,36 +982,11 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size, } rq->queuedata = info; - queue_flag_set_unlocked(QUEUE_FLAG_VIRT, rq); - - if (info->feature_discard) { - queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, rq); - blk_queue_max_discard_sectors(rq, get_capacity(gd)); - rq->limits.discard_granularity = info->discard_granularity; - rq->limits.discard_alignment = info->discard_alignment; - if (info->feature_secdiscard) - queue_flag_set_unlocked(QUEUE_FLAG_SECERASE, rq); - } - - /* Hard sector size and max sectors impersonate the equiv. hardware. */ - blk_queue_logical_block_size(rq, sector_size); - blk_queue_physical_block_size(rq, physical_sector_size); - blk_queue_max_hw_sectors(rq, (segments * XEN_PAGE_SIZE) / 512); - - /* Each segment in a request is up to an aligned page in size. */ - blk_queue_segment_boundary(rq, PAGE_SIZE - 1); - blk_queue_max_segment_size(rq, PAGE_SIZE); - - /* Ensure a merged request will fit in a single I/O ring slot. */ - blk_queue_max_segments(rq, segments / GRANTS_PER_PSEG); - - /* Make sure buffer addresses are sector-aligned. */ - blk_queue_dma_alignment(rq, 511); - - /* Make sure we don't use bounce buffers. */ - blk_queue_bounce_limit(rq, BLK_BOUNCE_ANY); - - gd->queue = rq; + info->rq = gd->queue = rq; + info->gd = gd; + info->sector_size = sector_size; + info->physical_sector_size = physical_sector_size; + blkif_set_queue_limits(info); return 0; } @@ -1136,16 +1149,11 @@ static int xlvbd_alloc_gendisk(blkif_sector_t capacity, gd->private_data = info; set_capacity(gd, capacity); - if (xlvbd_init_blk_queue(gd, sector_size, physical_sector_size, - info->max_indirect_segments ? : - BLKIF_MAX_SEGMENTS_PER_REQUEST)) { + if (xlvbd_init_blk_queue(gd, sector_size, physical_sector_size)) { del_gendisk(gd); goto release; } - info->rq = gd->queue; - info->gd = gd; - xlvbd_flush(info); if (vdisk_info & VDISK_READONLY) @@ -2007,6 +2015,8 @@ static int blkif_recover(struct blkfront_info *info) struct split_bio *split_bio; blkfront_gather_backend_features(info); + /* Reset limits changed by blk_mq_update_nr_hw_queues(). */ + blkif_set_queue_limits(info); segs = info->max_indirect_segments ? : BLKIF_MAX_SEGMENTS_PER_REQUEST; blk_queue_max_segments(info->rq, segs / GRANTS_PER_PSEG); -- cgit v0.10.2 From 4e876c2bd37fbb5c37a4554a79cf979d486f0e82 Mon Sep 17 00:00:00 2001 From: Bob Liu Date: Wed, 27 Jul 2016 17:42:04 +0800 Subject: xen-blkfront: free resources if xlvbd_alloc_gendisk fails Current code forgets to free resources in the failure path of xlvbd_alloc_gendisk(), this patch fix it. Signed-off-by: Bob Liu Signed-off-by: Konrad Rzeszutek Wilk diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index f84e220..88ef6d4 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -2442,7 +2442,7 @@ static void blkfront_connect(struct blkfront_info *info) if (err) { xenbus_dev_fatal(info->xbdev, err, "xlvbd_add at %s", info->xbdev->otherend); - return; + goto fail; } xenbus_switch_state(info->xbdev, XenbusStateConnected); @@ -2455,6 +2455,11 @@ static void blkfront_connect(struct blkfront_info *info) device_add_disk(&info->xbdev->dev, info->gd); info->is_ready = 1; + return; + +fail: + blkif_free(info, 0); + return; } /** -- cgit v0.10.2 From 47af45d684b5f3ae000ad448db02ce4f13f73273 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 16 Aug 2016 17:38:54 -0700 Subject: Input: i8042 - set up shared ps2_cmd_mutex for AUX ports The commit 4097461897df ("Input: i8042 - break load dependency ...") correctly set up ps2_cmd_mutex pointer for the KBD port but forgot to do the same for AUX port(s), which results in communication on KBD and AUX ports to clash with each other. Fixes: 4097461897df ("Input: i8042 - break load dependency ...") Reported-by: Bruno Wolff III Tested-by: Bruno Wolff III Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index b4d3408..405252a 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -1305,6 +1305,7 @@ static int __init i8042_create_aux_port(int idx) serio->write = i8042_aux_write; serio->start = i8042_start; serio->stop = i8042_stop; + serio->ps2_cmd_mutex = &i8042_mutex; serio->port_data = port; serio->dev.parent = &i8042_platform_device->dev; if (idx < 0) { -- cgit v0.10.2 From 86147e3cfa5e118b61e78f4f0bf29e920dcbd477 Mon Sep 17 00:00:00 2001 From: Liav Rehana Date: Tue, 16 Aug 2016 10:55:35 +0300 Subject: ARC: use correct offset in pt_regs for saving/restoring user mode r25 User mode callee regs are explicitly collected before signal delivery or breakpoint trap. r25 is special for kernel as it serves as task pointer, so user mode value is clobbered very early. It is saved in pt_regs where generally only scratch (aka caller saved) regs are saved. The code to access the corresponding pt_regs location had a subtle bug as it was using load/store with scaling of offset, whereas the offset was already byte wise correct. So fix this by replacing LD.AS with a standard LD Cc: Signed-off-by: Liav Rehana Reviewed-by: Alexey Brodkin [vgupta: rewrote title and commit log] Signed-off-by: Vineet Gupta diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h index ad7860c..51597f3 100644 --- a/arch/arc/include/asm/entry.h +++ b/arch/arc/include/asm/entry.h @@ -142,7 +142,7 @@ #ifdef CONFIG_ARC_CURR_IN_REG ; Retrieve orig r25 and save it with rest of callee_regs - ld.as r12, [r12, PT_user_r25] + ld r12, [r12, PT_user_r25] PUSH r12 #else PUSH r25 @@ -198,7 +198,7 @@ ; SP is back to start of pt_regs #ifdef CONFIG_ARC_CURR_IN_REG - st.as r12, [sp, PT_user_r25] + st r12, [sp, PT_user_r25] #endif .endm -- cgit v0.10.2 From 840c054fd0efb048df6fceb0c46385ec5b66dfe6 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 10 Aug 2016 14:10:57 -0700 Subject: ARC: Support syscall ABI v4 The syscall ABI includes the gcc functional calling ABI since a syscall implies userland caller and kernel callee. The current gcc ABI (v3) for ARCv2 ISA required 64-bit data be passed in even-odd register pairs, (potentially punching reg holes when passing such values as args). This was partly driven by the fact that the double-word LDD/STD instructions in ARCv2 expect the register alignment and thus gcc forcing this avoids extra MOV at the cost of a few unused register (which we have plenty anyways). This however was rejected as part of upstreaming gcc port to HS. So the new ABI v4 doesn't enforce the even-odd reg restriction. Do note that for ARCompact ISA builds v3 and v4 are practically the same in terms of gcc code generation. In terms of change management, we infer the new ABI if gcc 6.x onwards is used for building the kernel. This also needs a stable backport to enable older kernels to work with new tools/user-space Cc: Signed-off-by: Vineet Gupta diff --git a/arch/arc/include/uapi/asm/elf.h b/arch/arc/include/uapi/asm/elf.h index 0f99ac8..0037a58 100644 --- a/arch/arc/include/uapi/asm/elf.h +++ b/arch/arc/include/uapi/asm/elf.h @@ -13,8 +13,15 @@ /* Machine specific ELF Hdr flags */ #define EF_ARC_OSABI_MSK 0x00000f00 -#define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */ -#define EF_ARC_OSABI_CURRENT 0x00000300 /* v3 (no legacy syscalls) */ + +#define EF_ARC_OSABI_V3 0x00000300 /* v3 (no legacy syscalls) */ +#define EF_ARC_OSABI_V4 0x00000400 /* v4 (64bit data any reg align) */ + +#if __GNUC__ < 6 +#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V3 +#else +#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V4 +#endif typedef unsigned long elf_greg_t; typedef unsigned long elf_fpregset_t; diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index b5db9e7..be1972b 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -199,7 +199,7 @@ int elf_check_arch(const struct elf32_hdr *x) } eflags = x->e_flags; - if ((eflags & EF_ARC_OSABI_MSK) < EF_ARC_OSABI_CURRENT) { + if ((eflags & EF_ARC_OSABI_MSK) != EF_ARC_OSABI_CURRENT) { pr_err("ABI mismatch - you need newer toolchain\n"); force_sigsegv(SIGSEGV, current); return 0; diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index a946400..f52a0d0d 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -291,8 +291,10 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len) cpu->dccm.base_addr, TO_KB(cpu->dccm.sz), cpu->iccm.base_addr, TO_KB(cpu->iccm.sz)); - n += scnprintf(buf + n, len - n, - "OS ABI [v3]\t: no-legacy-syscalls\n"); + n += scnprintf(buf + n, len - n, "OS ABI [v%d]\t: %s\n", + EF_ARC_OSABI_CURRENT >> 8, + EF_ARC_OSABI_CURRENT == EF_ARC_OSABI_V3 ? + "no-legacy-syscalls" : "64-bit data any register aligned"); return buf; } -- cgit v0.10.2 From d77976c414ed7f521b9c79b2a9dde0147a3cf754 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 17 Aug 2016 17:34:46 -0700 Subject: ARC: export kmap | MODPOST 7 modules | ERROR: "kmap" [fs/ext2/ext2.ko] undefined! | ../scripts/Makefile.modpost:91: recipe for target '__modpost' failed Cc: Signed-off-by: Vineet Gupta diff --git a/arch/arc/mm/highmem.c b/arch/arc/mm/highmem.c index 04f8332..77ff64a 100644 --- a/arch/arc/mm/highmem.c +++ b/arch/arc/mm/highmem.c @@ -61,6 +61,7 @@ void *kmap(struct page *page) return kmap_high(page); } +EXPORT_SYMBOL(kmap); void *kmap_atomic(struct page *page) { -- cgit v0.10.2 From 1c3c909303924d30145601f47b6c058fdd2cbc2e Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 16 Aug 2016 18:27:07 -0700 Subject: ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit | CC mm/memory.o | In file included from ../mm/memory.c:53:0: | ../include/linux/pfn_t.h: In function ‘pfn_t_pte’: | ../include/linux/pfn_t.h:78:2: error: conversion to non-scalar type requested | return pfn_pte(pfn_t_to_pfn(pfn), pgprot); With STRICT_MM_TYPECHECKS pte_t is a struct and the offending code forces a cast which ends up shifting a struct and hence the gcc warning. Note that in recent past some of the arches (aarch64, s390) made STRICT_MM_TYPECHECKS default, but we don't for ARC as this leads to slightly worse generated code, given ARC ABI definition of returning structs (which pte_t would become) Quoting from ARC ABI... "Results of type struct are returned in a caller-supplied temporary variable whose address is passed in r0. For such functions, the arguments are shifted so that they are passed in r1 and up." So - struct to be returned would be allocated on stack requiring extra code at call sites - callee updates stack memory to facilitate the return (vs. simple MOV into return reg r0) Hence STRICT_MM_TYPECHECKS is not enabled by default for ARC Cc: #4.4+ Signed-off-by: Vineet Gupta diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h index 0f92d97..89eeb37 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -280,7 +280,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep) #define pte_page(pte) pfn_to_page(pte_pfn(pte)) #define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot) -#define pfn_pte(pfn, prot) (__pte(((pte_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot))) +#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) /* Don't use virt_to_pfn for macros below: could cause truncations for PAE40*/ #define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) -- cgit v0.10.2 From 9a0fe86745b8e95f7ea39933a956f5771332c430 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 19 Aug 2016 15:33:12 -0400 Subject: pNFS: Handle NFS4ERR_OLD_STATEID correctly in LAYOUTSTAT calls We normally want to update the stateid and then retry, Signed-off-by: Trond Myklebust diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 6f47527..64b43b4 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -318,10 +318,22 @@ static void nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) { struct nfs42_layoutstat_data *data = calldata; - struct nfs_server *server = NFS_SERVER(data->args.inode); + struct inode *inode = data->inode; + struct nfs_server *server = NFS_SERVER(inode); + struct pnfs_layout_hdr *lo; + spin_lock(&inode->i_lock); + lo = NFS_I(inode)->layout; + if (!pnfs_layout_is_valid(lo)) { + spin_unlock(&inode->i_lock); + rpc_exit(task, 0); + return; + } + nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid); + spin_unlock(&inode->i_lock); nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args, &data->res.seq_res, task); + } static void @@ -341,11 +353,11 @@ nfs42_layoutstat_done(struct rpc_task *task, void *calldata) case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_STALE_STATEID: - case -NFS4ERR_OLD_STATEID: case -NFS4ERR_BAD_STATEID: spin_lock(&inode->i_lock); lo = NFS_I(inode)->layout; - if (lo && nfs4_stateid_match(&data->args.stateid, + if (pnfs_layout_is_valid(lo) && + nfs4_stateid_match(&data->args.stateid, &lo->plh_stateid)) { LIST_HEAD(head); @@ -359,11 +371,23 @@ nfs42_layoutstat_done(struct rpc_task *task, void *calldata) } else spin_unlock(&inode->i_lock); break; + case -NFS4ERR_OLD_STATEID: + spin_lock(&inode->i_lock); + lo = NFS_I(inode)->layout; + if (pnfs_layout_is_valid(lo) && + nfs4_stateid_match_other(&data->args.stateid, + &lo->plh_stateid)) { + /* Do we need to delay before resending? */ + if (!nfs4_stateid_is_newer(&lo->plh_stateid, + &data->args.stateid)) + rpc_delay(task, HZ); + rpc_restart_call_prepare(task); + } + spin_unlock(&inode->i_lock); + break; case -ENOTSUPP: case -EOPNOTSUPP: NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS; - default: - break; } dprintk("%s server returns %d\n", __func__, task->tk_status); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 70806ca..bf98f1b 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -2510,7 +2510,6 @@ pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags) data->args.fh = NFS_FH(inode); data->args.inode = inode; - nfs4_stateid_copy(&data->args.stateid, &hdr->plh_stateid); status = ld->prepare_layoutstats(&data->args); if (status) goto out_free; -- cgit v0.10.2 From c57653dc94d0db7bf63067433ceaa97bdcd0a312 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 19 Aug 2016 13:59:02 -0700 Subject: ARC: export __udivdi3 for modules Some module using div_u64() was failing to link because the libgcc 64-bit divide assist routine was not being exported for modules Reported-by: avinashp@quantenna.com Cc: stable@vger.kernel.org Signed-off-by: Vineet Gupta diff --git a/arch/arc/kernel/arcksyms.c b/arch/arc/kernel/arcksyms.c index 4d9e777..000dd04 100644 --- a/arch/arc/kernel/arcksyms.c +++ b/arch/arc/kernel/arcksyms.c @@ -28,6 +28,7 @@ extern void __muldf3(void); extern void __divdf3(void); extern void __floatunsidf(void); extern void __floatunsisf(void); +extern void __udivdi3(void); EXPORT_SYMBOL(__ashldi3); EXPORT_SYMBOL(__ashrdi3); @@ -45,6 +46,7 @@ EXPORT_SYMBOL(__muldf3); EXPORT_SYMBOL(__divdf3); EXPORT_SYMBOL(__floatunsidf); EXPORT_SYMBOL(__floatunsisf); +EXPORT_SYMBOL(__udivdi3); /* ARC optimised assembler routines */ EXPORT_SYMBOL(memset); -- cgit v0.10.2 From 13f9bba7cd4f1665e4091143950a54e3f2984b07 Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Thu, 18 Aug 2016 21:09:02 +0300 Subject: net/mlx5e: Set port MTU on netdev creation rather on open Port mtu shouldn't be written to hardware on every single interface open. Here we set it only when needed, on change_mtu and netdevice creation. Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 870bea3..0fc3a2b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -1826,10 +1826,6 @@ int mlx5e_open_locked(struct net_device *netdev) netif_set_real_num_tx_queues(netdev, num_txqs); netif_set_real_num_rx_queues(netdev, priv->params.num_channels); - err = mlx5e_set_dev_port_mtu(netdev); - if (err) - goto err_clear_state_opened_flag; - err = mlx5e_open_channels(priv); if (err) { netdev_err(netdev, "%s: mlx5e_open_channels failed, %d\n", @@ -2593,6 +2589,7 @@ static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) mlx5e_close_locked(netdev); netdev->mtu = new_mtu; + mlx5e_set_dev_port_mtu(netdev); if (was_opened) err = mlx5e_open_locked(netdev); @@ -3463,6 +3460,8 @@ void *mlx5e_create_netdev(struct mlx5_core_dev *mdev, mlx5e_init_l2_addr(priv); + mlx5e_set_dev_port_mtu(netdev); + err = register_netdev(netdev); if (err) { mlx5_core_err(mdev, "register_netdev failed, %d\n", err); -- cgit v0.10.2 From 506753b0b40997756d73f841c884a018f52401a0 Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Thu, 18 Aug 2016 21:09:03 +0300 Subject: net/mlx5e: Optimization for MTU change Avoid unnecessary interface down/up operations upon an MTU change when it does not affect the rings configuration. Fixes: 461017cb006a ("net/mlx5e: Support RX multi-packet WQE (Striding RQ)") Signed-off-by: Tariq Toukan Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 0fc3a2b..65258b2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -2569,6 +2569,7 @@ static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) u16 max_mtu; u16 min_mtu; int err = 0; + bool reset; mlx5_query_port_max_mtu(mdev, &max_mtu, 1); @@ -2584,14 +2585,18 @@ static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) mutex_lock(&priv->state_lock); + reset = !priv->params.lro_en && + (priv->params.rq_wq_type != + MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ); + was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state); - if (was_opened) + if (was_opened && reset) mlx5e_close_locked(netdev); netdev->mtu = new_mtu; mlx5e_set_dev_port_mtu(netdev); - if (was_opened) + if (was_opened && reset) err = mlx5e_open_locked(netdev); mutex_unlock(&priv->state_lock); -- cgit v0.10.2 From 1061c90f524963a0a90e7d2f9a6bfa666458af51 Mon Sep 17 00:00:00 2001 From: Mohamad Haj Yahia Date: Thu, 18 Aug 2016 21:09:04 +0300 Subject: net/mlx5: Fix pci error recovery flow When PCI error is detected we should save the state of the pci prior to disabling it. Also when receiving pci slot reset call we need to verify that the device is responsive. Fixes: 89d44f0a6c73 ('net/mlx5_core: Add pci error handlers to mlx5_core driver') Signed-off-by: Mohamad Haj Yahia Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 4f491d4..2385bae 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1420,36 +1420,12 @@ static pci_ers_result_t mlx5_pci_err_detected(struct pci_dev *pdev, dev_info(&pdev->dev, "%s was called\n", __func__); mlx5_enter_error_state(dev); mlx5_unload_one(dev, priv); + pci_save_state(pdev); mlx5_pci_disable_device(dev); return state == pci_channel_io_perm_failure ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; } -static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev) -{ - struct mlx5_core_dev *dev = pci_get_drvdata(pdev); - int err = 0; - - dev_info(&pdev->dev, "%s was called\n", __func__); - - err = mlx5_pci_enable_device(dev); - if (err) { - dev_err(&pdev->dev, "%s: mlx5_pci_enable_device failed with error code: %d\n" - , __func__, err); - return PCI_ERS_RESULT_DISCONNECT; - } - pci_set_master(pdev); - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - - return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; -} - -void mlx5_disable_device(struct mlx5_core_dev *dev) -{ - mlx5_pci_err_detected(dev->pdev, 0); -} - /* wait for the device to show vital signs by waiting * for the health counter to start counting. */ @@ -1477,21 +1453,44 @@ static int wait_vital(struct pci_dev *pdev) return -ETIMEDOUT; } -static void mlx5_pci_resume(struct pci_dev *pdev) +static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); - struct mlx5_priv *priv = &dev->priv; int err; dev_info(&pdev->dev, "%s was called\n", __func__); - pci_save_state(pdev); - err = wait_vital(pdev); + err = mlx5_pci_enable_device(dev); if (err) { + dev_err(&pdev->dev, "%s: mlx5_pci_enable_device failed with error code: %d\n" + , __func__, err); + return PCI_ERS_RESULT_DISCONNECT; + } + + pci_set_master(pdev); + pci_restore_state(pdev); + + if (wait_vital(pdev)) { dev_err(&pdev->dev, "%s: wait_vital timed out\n", __func__); - return; + return PCI_ERS_RESULT_DISCONNECT; } + return PCI_ERS_RESULT_RECOVERED; +} + +void mlx5_disable_device(struct mlx5_core_dev *dev) +{ + mlx5_pci_err_detected(dev->pdev, 0); +} + +static void mlx5_pci_resume(struct pci_dev *pdev) +{ + struct mlx5_core_dev *dev = pci_get_drvdata(pdev); + struct mlx5_priv *priv = &dev->priv; + int err; + + dev_info(&pdev->dev, "%s was called\n", __func__); + err = mlx5_load_one(dev, priv); if (err) dev_err(&pdev->dev, "%s: mlx5_load_one failed with error code: %d\n" -- cgit v0.10.2 From 2c0f8ce1b584a4d7b8ff53140d21dfed99834940 Mon Sep 17 00:00:00 2001 From: Paul Blakey Date: Thu, 18 Aug 2016 21:09:05 +0300 Subject: net/mlx5: Added missing check of msg length in verifying its signature Set and verify signature calculates the signature for each of the mailbox nodes, even for those that are unused (from cache). Added a missing length check to set and verify only those which are used. While here, also moved the setting of msg's nodes token to where we already go over them. This saves a pass because checksum is disabled, and the only useful thing remaining that set signature does is setting the token. Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters') Signed-off-by: Paul Blakey Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c index d6e2a1c..c2ec01a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -143,13 +143,14 @@ static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx) return cmd->cmd_buf + (idx << cmd->log_stride); } -static u8 xor8_buf(void *buf, int len) +static u8 xor8_buf(void *buf, size_t offset, int len) { u8 *ptr = buf; u8 sum = 0; int i; + int end = len + offset; - for (i = 0; i < len; i++) + for (i = offset; i < end; i++) sum ^= ptr[i]; return sum; @@ -157,41 +158,49 @@ static u8 xor8_buf(void *buf, int len) static int verify_block_sig(struct mlx5_cmd_prot_block *block) { - if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff) + size_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0); + int xor_len = sizeof(*block) - sizeof(block->data) - 1; + + if (xor8_buf(block, rsvd0_off, xor_len) != 0xff) return -EINVAL; - if (xor8_buf(block, sizeof(*block)) != 0xff) + if (xor8_buf(block, 0, sizeof(*block)) != 0xff) return -EINVAL; return 0; } -static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token, - int csum) +static void calc_block_sig(struct mlx5_cmd_prot_block *block) { - block->token = token; - if (csum) { - block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) - - sizeof(block->data) - 2); - block->sig = ~xor8_buf(block, sizeof(*block) - 1); - } + int ctrl_xor_len = sizeof(*block) - sizeof(block->data) - 2; + size_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0); + + block->ctrl_sig = ~xor8_buf(block, rsvd0_off, ctrl_xor_len); + block->sig = ~xor8_buf(block, 0, sizeof(*block) - 1); } -static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token, int csum) +static void calc_chain_sig(struct mlx5_cmd_msg *msg) { struct mlx5_cmd_mailbox *next = msg->next; - - while (next) { - calc_block_sig(next->buf, token, csum); + int size = msg->len; + int blen = size - min_t(int, sizeof(msg->first.data), size); + int n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) + / MLX5_CMD_DATA_BLOCK_SIZE; + int i = 0; + + for (i = 0; i < n && next; i++) { + calc_block_sig(next->buf); next = next->next; } } static void set_signature(struct mlx5_cmd_work_ent *ent, int csum) { - ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay)); - calc_chain_sig(ent->in, ent->token, csum); - calc_chain_sig(ent->out, ent->token, csum); + ent->lay->sig = ~xor8_buf(ent->lay, 0, sizeof(*ent->lay)); + if (csum) { + calc_chain_sig(ent->in); + calc_chain_sig(ent->out); + } } static void poll_timeout(struct mlx5_cmd_work_ent *ent) @@ -222,12 +231,17 @@ static int verify_signature(struct mlx5_cmd_work_ent *ent) struct mlx5_cmd_mailbox *next = ent->out->next; int err; u8 sig; + int size = ent->out->len; + int blen = size - min_t(int, sizeof(ent->out->first.data), size); + int n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) + / MLX5_CMD_DATA_BLOCK_SIZE; + int i = 0; - sig = xor8_buf(ent->lay, sizeof(*ent->lay)); + sig = xor8_buf(ent->lay, 0, sizeof(*ent->lay)); if (sig != 0xff) return -EINVAL; - while (next) { + for (i = 0; i < n && next; i++) { err = verify_block_sig(next->buf); if (err) return err; @@ -656,7 +670,6 @@ static void cmd_work_handler(struct work_struct *work) spin_unlock_irqrestore(&cmd->alloc_lock, flags); } - ent->token = alloc_token(cmd); cmd->ent_arr[ent->idx] = ent; lay = get_inst(cmd, ent->idx); ent->lay = lay; @@ -766,7 +779,8 @@ static u8 *get_status_ptr(struct mlx5_outbox_hdr *out) static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, struct mlx5_cmd_msg *out, void *uout, int uout_size, mlx5_cmd_cbk_t callback, - void *context, int page_queue, u8 *status) + void *context, int page_queue, u8 *status, + u8 token) { struct mlx5_cmd *cmd = &dev->cmd; struct mlx5_cmd_work_ent *ent; @@ -783,6 +797,8 @@ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, if (IS_ERR(ent)) return PTR_ERR(ent); + ent->token = token; + if (!callback) init_completion(&ent->done); @@ -854,7 +870,8 @@ static const struct file_operations fops = { .write = dbg_write, }; -static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size) +static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size, + u8 token) { struct mlx5_cmd_prot_block *block; struct mlx5_cmd_mailbox *next; @@ -880,6 +897,7 @@ static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size) memcpy(block->data, from, copy); from += copy; size -= copy; + block->token = token; next = next->next; } @@ -949,7 +967,8 @@ static void free_cmd_box(struct mlx5_core_dev *dev, } static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, - gfp_t flags, int size) + gfp_t flags, int size, + u8 token) { struct mlx5_cmd_mailbox *tmp, *head = NULL; struct mlx5_cmd_prot_block *block; @@ -978,6 +997,7 @@ static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, tmp->next = head; block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0); block->block_num = cpu_to_be32(n - i - 1); + block->token = token; head = tmp; } msg->next = head; @@ -1352,7 +1372,7 @@ static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, } if (IS_ERR(msg)) - msg = mlx5_alloc_cmd_msg(dev, gfp, in_size); + msg = mlx5_alloc_cmd_msg(dev, gfp, in_size, 0); return msg; } @@ -1377,6 +1397,7 @@ static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int err; u8 status = 0; u32 drv_synd; + u8 token; if (pci_channel_offline(dev->pdev) || dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { @@ -1395,20 +1416,22 @@ static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, return err; } - err = mlx5_copy_to_msg(inb, in, in_size); + token = alloc_token(&dev->cmd); + + err = mlx5_copy_to_msg(inb, in, in_size, token); if (err) { mlx5_core_warn(dev, "err %d\n", err); goto out_in; } - outb = mlx5_alloc_cmd_msg(dev, gfp, out_size); + outb = mlx5_alloc_cmd_msg(dev, gfp, out_size, token); if (IS_ERR(outb)) { err = PTR_ERR(outb); goto out_in; } err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context, - pages_queue, &status); + pages_queue, &status, token); if (err) goto out_out; @@ -1476,7 +1499,7 @@ static int create_msg_cache(struct mlx5_core_dev *dev) INIT_LIST_HEAD(&cmd->cache.med.head); for (i = 0; i < NUM_LONG_LISTS; i++) { - msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE); + msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE, 0); if (IS_ERR(msg)) { err = PTR_ERR(msg); goto ex_err; @@ -1486,7 +1509,7 @@ static int create_msg_cache(struct mlx5_core_dev *dev) } for (i = 0; i < NUM_MED_LISTS; i++) { - msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE); + msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE, 0); if (IS_ERR(msg)) { err = PTR_ERR(msg); goto ex_err; -- cgit v0.10.2 From 6c3b4f90861c7ed59d0287b0ff7f2623f9d93d73 Mon Sep 17 00:00:00 2001 From: Amir Vadai Date: Thu, 18 Aug 2016 21:09:06 +0300 Subject: net/mlx5: Update last-use statistics for flow rules Set lastuse statistic, when number of packets is changed compared to last query. This was wrongly dropped when bulk counter reading was added. Fixes: a351a1b03bf1 ('net/mlx5: Introduce bulk reading of flow counters') Signed-off-by: Amir Vadai Reported-by: Paul Blakey Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c index c2877e9..3a9195b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c @@ -126,12 +126,21 @@ static struct rb_node *mlx5_fc_stats_query(struct mlx5_core_dev *dev, for (node = &first->node; node; node = rb_next(node)) { struct mlx5_fc *counter = rb_entry(node, struct mlx5_fc, node); struct mlx5_fc_cache *c = &counter->cache; + u64 packets; + u64 bytes; if (counter->id > last_id) break; mlx5_cmd_fc_bulk_get(dev, b, - counter->id, &c->packets, &c->bytes); + counter->id, &packets, &bytes); + + if (c->packets == packets) + continue; + + c->packets = packets; + c->bytes = bytes; + c->lastuse = jiffies; } out: -- cgit v0.10.2 From 1dbd0d373ac338903d27fab5204b13122cc5accd Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 18 Aug 2016 21:09:07 +0300 Subject: net/mlx5e: Use correct flow dissector key on flower offloading The wrong key is used when extracting the address type field set by the flower offload code. We have to use the control key and not the basic key, fix that. Fixes: e3a2b7ed018e ('net/mlx5e: Support offload cls_flower with drop action') Signed-off-by: Hadar Hen Zion Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index dc8b1cb..22cfc4a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -170,7 +170,7 @@ static int parse_cls_flower(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) { struct flow_dissector_key_control *key = skb_flow_dissector_target(f->dissector, - FLOW_DISSECTOR_KEY_BASIC, + FLOW_DISSECTOR_KEY_CONTROL, f->key); addr_type = key->addr_type; } -- cgit v0.10.2 From dbe413e3bb93e0634f6d8d00b01cda6f141e0acd Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 18 Aug 2016 21:09:08 +0300 Subject: net/mlx5e: Retrieve the switchdev id from the firmware only once Avoid firmware command execution each time the switchdev HW ID attr get call is made. We do that by reading the ID (PF NIC MAC) only once at load time and store it on the representor structure. Signed-off-by: Hadar Hen Zion Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 65258b2..03d944c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -3387,6 +3387,7 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv) queue_work(priv->wq, &priv->set_rx_mode_work); if (MLX5_CAP_GEN(mdev, vport_group_manager)) { + mlx5_query_nic_vport_mac_address(mdev, 0, rep.hw_id); rep.load = mlx5e_nic_rep_load; rep.unload = mlx5e_nic_rep_unload; rep.vport = 0; @@ -3505,16 +3506,20 @@ static void mlx5e_register_vport_rep(struct mlx5_core_dev *mdev) struct mlx5_eswitch *esw = mdev->priv.eswitch; int total_vfs = MLX5_TOTAL_VPORTS(mdev); int vport; + u8 mac[ETH_ALEN]; if (!MLX5_CAP_GEN(mdev, vport_group_manager)) return; + mlx5_query_nic_vport_mac_address(mdev, 0, mac); + for (vport = 1; vport < total_vfs; vport++) { struct mlx5_eswitch_rep rep; rep.load = mlx5e_vport_rep_load; rep.unload = mlx5e_vport_rep_unload; rep.vport = vport; + ether_addr_copy(rep.hw_id, mac); mlx5_eswitch_register_vport_rep(esw, &rep); } } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 1c7d8b8..134de4a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -135,17 +135,16 @@ static const struct ethtool_ops mlx5e_rep_ethtool_ops = { int mlx5e_attr_get(struct net_device *dev, struct switchdev_attr *attr) { struct mlx5e_priv *priv = netdev_priv(dev); + struct mlx5_eswitch_rep *rep = priv->ppriv; struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; - u8 mac[ETH_ALEN]; if (esw->mode == SRIOV_NONE) return -EOPNOTSUPP; switch (attr->id) { case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: - mlx5_query_nic_vport_mac_address(priv->mdev, 0, mac); attr->u.ppid.id_len = ETH_ALEN; - memcpy(&attr->u.ppid.id, &mac, ETH_ALEN); + ether_addr_copy(attr->u.ppid.id, rep->hw_id); break; default: return -EOPNOTSUPP; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index c0b0560..a961409 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -174,6 +174,7 @@ struct mlx5_eswitch_rep { void *priv_data; struct list_head vport_sqs_list; bool valid; + u8 hw_id[ETH_ALEN]; }; struct mlx5_esw_offload { -- cgit v0.10.2 From ef78618b9d29d40c95ca7092493545b8487e226c Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Thu, 18 Aug 2016 21:09:09 +0300 Subject: net/mlx5: E-Switch, Return the correct devlink e-switch mode Since mlx5 has also the NONE e-switch mode, we must translate from mlx5 mode to devlink mode on the devlink eswitch mode get call, do that. While here, remove the mlx5_ prefix from the static function helpers that deal with the mode to comply with the rest of the code. Fixes: c930a3ad7453 ('net/mlx5e: Add devlink based SRIOV mode change') Signed-off-by: Or Gerlitz Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index a357e8e..1a3ccbf 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -535,7 +535,7 @@ void esw_offloads_cleanup(struct mlx5_eswitch *esw, int nvports) esw_destroy_offloads_fdb_table(esw); } -static int mlx5_esw_mode_from_devlink(u16 mode, u16 *mlx5_mode) +static int esw_mode_from_devlink(u16 mode, u16 *mlx5_mode) { switch (mode) { case DEVLINK_ESWITCH_MODE_LEGACY: @@ -551,6 +551,22 @@ static int mlx5_esw_mode_from_devlink(u16 mode, u16 *mlx5_mode) return 0; } +static int esw_mode_to_devlink(u16 mlx5_mode, u16 *mode) +{ + switch (mlx5_mode) { + case SRIOV_LEGACY: + *mode = DEVLINK_ESWITCH_MODE_LEGACY; + break; + case SRIOV_OFFLOADS: + *mode = DEVLINK_ESWITCH_MODE_SWITCHDEV; + break; + default: + return -EINVAL; + } + + return 0; +} + int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode) { struct mlx5_core_dev *dev; @@ -566,7 +582,7 @@ int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode) if (cur_mlx5_mode == SRIOV_NONE) return -EOPNOTSUPP; - if (mlx5_esw_mode_from_devlink(mode, &mlx5_mode)) + if (esw_mode_from_devlink(mode, &mlx5_mode)) return -EINVAL; if (cur_mlx5_mode == mlx5_mode) @@ -592,9 +608,7 @@ int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode) if (dev->priv.eswitch->mode == SRIOV_NONE) return -EOPNOTSUPP; - *mode = dev->priv.eswitch->mode; - - return 0; + return esw_mode_to_devlink(dev->priv.eswitch->mode, mode); } void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw, -- cgit v0.10.2 From 1a8ee6f25b10da7e3de0899a184b221d793f2482 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Thu, 18 Aug 2016 21:09:10 +0300 Subject: net/mlx5: E-Switch, Set the send-to-vport rules in the correct table While adding actual offloading support to the new switchdev mode, we didn't change the setup of the send-to-vport rules to put them in the slow path table, fix that. Fixes: 1033665e63b6 ('net/mlx5: E-Switch, Use two priorities for SRIOV offloads mode') Signed-off-by: Or Gerlitz Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 1a3ccbf..3dc83a9 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -113,7 +113,7 @@ mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw, int vport, u32 sqn dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT; dest.vport_num = vport; - flow_rule = mlx5_add_flow_rule(esw->fdb_table.fdb, spec, + flow_rule = mlx5_add_flow_rule(esw->fdb_table.offloads.fdb, spec, MLX5_FLOW_CONTEXT_ACTION_FWD_DEST, 0, &dest); if (IS_ERR(flow_rule)) -- cgit v0.10.2 From f96750f8d6bd64bb6f5a7a1146121b96bc6115f0 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Thu, 18 Aug 2016 21:09:11 +0300 Subject: net/mlx5: E-Switch, Avoid ACLs in the offloads mode When we are in the switchdev/offloads mode, HW matching is done as dictated by the offloaded rules and hence we don't need to enable the ACLs mechanism used by the legacy mode. Signed-off-by: Or Gerlitz Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index f6d6677..8b78f15 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -1451,7 +1451,8 @@ static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num, esw_debug(esw->dev, "Enabling VPORT(%d)\n", vport_num); - if (vport_num) { /* Only VFs need ACLs for VST and spoofchk filtering */ + /* Only VFs need ACLs for VST and spoofchk filtering */ + if (vport_num && esw->mode == SRIOV_LEGACY) { esw_vport_ingress_config(esw, vport); esw_vport_egress_config(esw, vport); } @@ -1502,7 +1503,7 @@ static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num) */ esw_vport_change_handle_locked(vport); vport->enabled_events = 0; - if (vport_num) { + if (vport_num && esw->mode == SRIOV_LEGACY) { esw_vport_disable_egress_acl(esw, vport); esw_vport_disable_ingress_acl(esw, vport); } @@ -1767,7 +1768,7 @@ int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw, vport, err); mutex_lock(&esw->state_lock); - if (evport->enabled) + if (evport->enabled && esw->mode == SRIOV_LEGACY) err = esw_vport_ingress_config(esw, evport); mutex_unlock(&esw->state_lock); return err; @@ -1839,7 +1840,7 @@ int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw, mutex_lock(&esw->state_lock); evport->vlan = vlan; evport->qos = qos; - if (evport->enabled) { + if (evport->enabled && esw->mode == SRIOV_LEGACY) { err = esw_vport_ingress_config(esw, evport); if (err) goto out; @@ -1868,10 +1869,11 @@ int mlx5_eswitch_set_vport_spoofchk(struct mlx5_eswitch *esw, mutex_lock(&esw->state_lock); pschk = evport->spoofchk; evport->spoofchk = spoofchk; - if (evport->enabled) + if (evport->enabled && esw->mode == SRIOV_LEGACY) { err = esw_vport_ingress_config(esw, evport); - if (err) - evport->spoofchk = pschk; + if (err) + evport->spoofchk = pschk; + } mutex_unlock(&esw->state_lock); return err; -- cgit v0.10.2 From 4c2f2454964477c66ef57745daab203b71783f66 Mon Sep 17 00:00:00 2001 From: Marcelo Ricardo Leitner Date: Thu, 18 Aug 2016 14:58:35 -0300 Subject: sctp: linearize early if it's not GSO Because otherwise when crc computation is still needed it's way more expensive than on a linear buffer to the point that it affects performance. It's so expensive that netperf test gives a perf output as below: Overhead Command Shared Object Symbol 18,62% netserver [kernel.vmlinux] [k] crc32_generic_shift 2,57% netserver [kernel.vmlinux] [k] __pskb_pull_tail 1,94% netserver [kernel.vmlinux] [k] fib_table_lookup 1,90% netserver [kernel.vmlinux] [k] copy_user_enhanced_fast_string 1,66% swapper [kernel.vmlinux] [k] intel_idle 1,63% netserver [kernel.vmlinux] [k] _raw_spin_lock 1,59% netserver [sctp] [k] sctp_packet_transmit 1,55% netserver [kernel.vmlinux] [k] memcpy_erms 1,42% netserver [sctp] [k] sctp_rcv # netperf -H 192.168.10.1 -l 10 -t SCTP_STREAM -cC -- -m 12000 SCTP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.1 () port 0 AF_INET Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB 212992 212992 12000 10.00 3016.42 2.88 3.78 1.874 2.462 After patch: Overhead Command Shared Object Symbol 2,75% netserver [kernel.vmlinux] [k] memcpy_erms 2,63% netserver [kernel.vmlinux] [k] copy_user_enhanced_fast_string 2,39% netserver [kernel.vmlinux] [k] fib_table_lookup 2,04% netserver [kernel.vmlinux] [k] __pskb_pull_tail 1,91% netserver [kernel.vmlinux] [k] _raw_spin_lock 1,91% netserver [sctp] [k] sctp_packet_transmit 1,72% netserver [mlx4_en] [k] mlx4_en_process_rx_cq 1,68% netserver [sctp] [k] sctp_rcv # netperf -H 192.168.10.1 -l 10 -t SCTP_STREAM -cC -- -m 12000 SCTP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.10.1 () port 0 AF_INET Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB 212992 212992 12000 10.00 3681.77 3.83 3.46 2.045 1.849 Fixes: 3acb50c18d8d ("sctp: delay as much as possible skb_linearize") Signed-off-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller diff --git a/net/sctp/input.c b/net/sctp/input.c index c182db7..69444d3 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -119,7 +119,13 @@ int sctp_rcv(struct sk_buff *skb) skb_transport_offset(skb)) goto discard_it; - if (!pskb_may_pull(skb, sizeof(struct sctphdr))) + /* If the packet is fragmented and we need to do crc checking, + * it's better to just linearize it otherwise crc computing + * takes longer. + */ + if ((!(skb_shinfo(skb)->gso_type & SKB_GSO_SCTP) && + skb_linearize(skb)) || + !pskb_may_pull(skb, sizeof(struct sctphdr))) goto discard_it; /* Pull up the IP header. */ @@ -1177,9 +1183,6 @@ static struct sctp_association *__sctp_rcv_lookup_harder(struct net *net, if ((skb_shinfo(skb)->gso_type & SKB_GSO_SCTP) == SKB_GSO_SCTP) return NULL; - if (skb_linearize(skb)) - return NULL; - ch = (sctp_chunkhdr_t *) skb->data; /* The code below will attempt to walk the chunk and extract diff --git a/net/sctp/inqueue.c b/net/sctp/inqueue.c index c30ddb0..6437aa9 100644 --- a/net/sctp/inqueue.c +++ b/net/sctp/inqueue.c @@ -170,19 +170,6 @@ next_chunk: chunk = list_entry(entry, struct sctp_chunk, list); - /* Linearize if it's not GSO */ - if ((skb_shinfo(chunk->skb)->gso_type & SKB_GSO_SCTP) != SKB_GSO_SCTP && - skb_is_nonlinear(chunk->skb)) { - if (skb_linearize(chunk->skb)) { - __SCTP_INC_STATS(dev_net(chunk->skb->dev), SCTP_MIB_IN_PKT_DISCARDS); - sctp_chunk_free(chunk); - goto next_chunk; - } - - /* Update sctp_hdr as it probably changed */ - chunk->sctp_hdr = sctp_hdr(chunk->skb); - } - if ((skb_shinfo(chunk->skb)->gso_type & SKB_GSO_SCTP) == SKB_GSO_SCTP) { /* GSO-marked skbs but without frags, handle * them normally -- cgit v0.10.2 From 56cff471d0c62b721a298f806e7637501debb513 Mon Sep 17 00:00:00 2001 From: Gao Feng Date: Fri, 19 Aug 2016 13:36:23 +0800 Subject: l2tp: Fix the connect status check in pppol2tp_getname The sk->sk_state is bits flag, so need use bit operation check instead of value check. Signed-off-by: Gao Feng Tested-by: Guillaume Nault Signed-off-by: David S. Miller diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index d9560aa..232cb92 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -856,7 +856,7 @@ static int pppol2tp_getname(struct socket *sock, struct sockaddr *uaddr, error = -ENOTCONN; if (sk == NULL) goto end; - if (sk->sk_state != PPPOX_CONNECTED) + if (!(sk->sk_state & PPPOX_CONNECTED)) goto end; error = -EBADF; -- cgit v0.10.2 From 8912862f067276b480c4fed9da74c9c5601130a6 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Fri, 19 Aug 2016 14:43:48 +0200 Subject: mlxsw: spectrum_buffers: Fix pool value handling in mlxsw_sp_sb_tc_pool_bind_set Pool index has to be converted by get_pool helper to work correctly for egress pool. In mlxsw the egress pool index starts from 0. Fixes: 0f433fa0ecc ("mlxsw: spectrum_buffers: Implement shared buffer configuration") Signed-off-by: Jiri Pirko Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 237418a..953b214 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -717,22 +717,18 @@ int mlxsw_sp_sb_tc_pool_bind_set(struct mlxsw_core_port *mlxsw_core_port, u8 local_port = mlxsw_sp_port->local_port; u8 pg_buff = tc_index; enum mlxsw_reg_sbxx_dir dir = pool_type; - u8 pool = pool_index; + u8 pool = pool_get(pool_index); u32 max_buff; int err; + if (dir != dir_get(pool_index)) + return -EINVAL; + err = mlxsw_sp_sb_threshold_in(mlxsw_sp, pool, dir, threshold, &max_buff); if (err) return err; - if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS) { - if (pool < MLXSW_SP_SB_POOL_COUNT) - return -EINVAL; - pool -= MLXSW_SP_SB_POOL_COUNT; - } else if (pool >= MLXSW_SP_SB_POOL_COUNT) { - return -EINVAL; - } return mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, pg_buff, dir, 0, max_buff, pool); } -- cgit v0.10.2 From d5fb46e0e3b7e49ee83ba92efc3ab4e1a545ecc1 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 26 Jul 2016 13:47:10 -0700 Subject: drm/vc4: Use drm_free_large() on handles to match its allocation. If you managed to exceed the limit to switch to vmalloc, we'd use the wrong free. Signed-off-by: Eric Anholt Fixes: d5b1a78a772f ("drm/vc4: Add support for drawing 3D frames.") Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index 6155e8a..62df61f 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -572,7 +572,7 @@ vc4_cl_lookup_bos(struct drm_device *dev, spin_unlock(&file_priv->table_lock); fail: - kfree(handles); + drm_free_large(handles); return 0; } -- cgit v0.10.2 From ece7267dccf0e9e08cb6e8dc6b7ad2be9c4eb444 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 19 Jul 2016 11:32:44 -0700 Subject: drm/vc4: Use drm_malloc_ab to fix large rendering jobs. If you exceeded the size that kmalloc would return, you'd get a dmesg warning and a return from the job submit. We can handle much allocations with vmalloc, and drm_malloc_ab makes that decision. Fixes failure in piglit's scissor-many. Signed-off-by: Eric Anholt diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index 62df61f..bfd1b52 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -534,8 +534,8 @@ vc4_cl_lookup_bos(struct drm_device *dev, return -EINVAL; } - exec->bo = kcalloc(exec->bo_count, sizeof(struct drm_gem_cma_object *), - GFP_KERNEL); + exec->bo = drm_calloc_large(exec->bo_count, + sizeof(struct drm_gem_cma_object *)); if (!exec->bo) { DRM_ERROR("Failed to allocate validated BO pointers\n"); return -ENOMEM; @@ -608,7 +608,7 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec) * read the contents back for validation, and I think the * bo->vaddr is uncached access. */ - temp = kmalloc(temp_size, GFP_KERNEL); + temp = drm_malloc_ab(temp_size, 1); if (!temp) { DRM_ERROR("Failed to allocate storage for copying " "in bin/render CLs.\n"); @@ -675,7 +675,7 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec) ret = vc4_validate_shader_recs(dev, exec); fail: - kfree(temp); + drm_free_large(temp); return ret; } @@ -688,7 +688,7 @@ vc4_complete_exec(struct drm_device *dev, struct vc4_exec_info *exec) if (exec->bo) { for (i = 0; i < exec->bo_count; i++) drm_gem_object_unreference_unlocked(&exec->bo[i]->base); - kfree(exec->bo); + drm_free_large(exec->bo); } while (!list_empty(&exec->unref_list)) { -- cgit v0.10.2 From 163195fc12cae0c8b5c0d74d3ba8d2c5f81773bc Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 26 Jul 2016 13:47:12 -0700 Subject: drm/vc4: Fix handling of a pm_runtime_get_sync() success case. If the device was already up, a 1 is returned instead of 0. We were erroring out, leading the 3D driver to sometimes fail at screen initialization (generally with ENOENT returned to it). Signed-off-by: Eric Anholt Fixes: af713795c59f ("drm/vc4: Add a getparam ioctl for getting the V3D identity regs.") diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 8b42d31..9ecef93 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -57,21 +57,21 @@ static int vc4_get_param_ioctl(struct drm_device *dev, void *data, switch (args->param) { case DRM_VC4_PARAM_V3D_IDENT0: ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); - if (ret) + if (ret < 0) return ret; args->value = V3D_READ(V3D_IDENT0); pm_runtime_put(&vc4->v3d->pdev->dev); break; case DRM_VC4_PARAM_V3D_IDENT1: ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); - if (ret) + if (ret < 0) return ret; args->value = V3D_READ(V3D_IDENT1); pm_runtime_put(&vc4->v3d->pdev->dev); break; case DRM_VC4_PARAM_V3D_IDENT2: ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); - if (ret) + if (ret < 0) return ret; args->value = V3D_READ(V3D_IDENT2); pm_runtime_put(&vc4->v3d->pdev->dev); -- cgit v0.10.2 From def96527707e1978a0c88e75d13b082f51460d5c Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 26 Jul 2016 13:47:13 -0700 Subject: drm/vc4: Free hang state before destroying BO cache. The BO cache will complain if BOs are still allocated when we try to destroy it (since freeing those BOs would try to hit the cache). You could hit this if you were to unload the module after a GPU hang. Signed-off-by: Eric Anholt Fixes: 214613656b51 ("drm/vc4: Add an interface for capturing the GPU state after a hang.") diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index bfd1b52..fba2c83 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -942,8 +942,8 @@ vc4_gem_destroy(struct drm_device *dev) vc4->overflow_mem = NULL; } - vc4_bo_cache_destroy(dev); - if (vc4->hang_state) vc4_free_hang_state(dev, vc4->hang_state); + + vc4_bo_cache_destroy(dev); } -- cgit v0.10.2 From 9326e6f25574bbb8bd48206d245654780e3fd665 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 26 Jul 2016 13:47:14 -0700 Subject: drm/vc4: Fix overflow mem unreferencing when the binner runs dry. Overflow memory handling is tricky: While it's still referenced by the BPO registers, we want to keep it from being freed. When we are putting a new set of overflow memory in the registers, we need to assign the old one to the last rendering job using it. We were looking at "what's currently running in the binner", but since the bin/render submission split, we may end up with the binner completing and having no new job while the renderer is still processing. So, if we don't find a bin job at all, look at the highest-seqno (last) render job to attach our overflow to. Signed-off-by: Eric Anholt Fixes: ca26d28bbaa3 ("drm/vc4: improve throughput by pipelining binning and rendering jobs") Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 489e3de..428e249 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -321,6 +321,15 @@ vc4_first_render_job(struct vc4_dev *vc4) struct vc4_exec_info, head); } +static inline struct vc4_exec_info * +vc4_last_render_job(struct vc4_dev *vc4) +{ + if (list_empty(&vc4->render_job_list)) + return NULL; + return list_last_entry(&vc4->render_job_list, + struct vc4_exec_info, head); +} + /** * struct vc4_texture_sample_info - saves the offsets into the UBO for texture * setup parameters. diff --git a/drivers/gpu/drm/vc4/vc4_irq.c b/drivers/gpu/drm/vc4/vc4_irq.c index b0104a34..094bc6a 100644 --- a/drivers/gpu/drm/vc4/vc4_irq.c +++ b/drivers/gpu/drm/vc4/vc4_irq.c @@ -83,8 +83,10 @@ vc4_overflow_mem_work(struct work_struct *work) spin_lock_irqsave(&vc4->job_lock, irqflags); current_exec = vc4_first_bin_job(vc4); + if (!current_exec) + current_exec = vc4_last_render_job(vc4); if (current_exec) { - vc4->overflow_mem->seqno = vc4->finished_seqno + 1; + vc4->overflow_mem->seqno = current_exec->seqno; list_add_tail(&vc4->overflow_mem->unref_head, ¤t_exec->unref_list); vc4->overflow_mem = NULL; -- cgit v0.10.2 From 552416c146fadc67cd9b53ef7adf88d3381c43a6 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 26 Jul 2016 13:47:15 -0700 Subject: drm/vc4: Fix oops when userspace hands in a bad BO. We'd end up NULL pointer dereferencing because we didn't take the error path out in the parent. Fixes igt vc4_lookup_fail test. Signed-off-by: Eric Anholt Fixes: d5b1a78a772f ("drm/vc4: Add support for drawing 3D frames.") Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index fba2c83..b262c5c 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -573,7 +573,7 @@ vc4_cl_lookup_bos(struct drm_device *dev, fail: drm_free_large(handles); - return 0; + return ret; } static int -- cgit v0.10.2 From c10ac75aeed2d8486a73a316ac3a08f85d140894 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Fri, 19 Aug 2016 20:58:26 -0700 Subject: ixgbe: Do not clear RAR entry when clearing VMDq for SAN MAC The RAR entry for the SAN MAC address was being cleared when we were clearing the VMDq pool bits. In order to prevent this we need to add an extra check to protect the SAN MAC from being cleared. Fixes: 6e982aeae ("ixgbe: Clear stale pool mappings") Signed-off-by: Alexander Duyck Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c index b4217f3..c47b605 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c @@ -2958,8 +2958,10 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) } /* was that the last pool using this rar? */ - if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0) + if (mpsar_lo == 0 && mpsar_hi == 0 && + rar != 0 && rar != hw->mac.san_mac_rar_index) hw->mac.ops.clear_rar(hw, rar); + return 0; } -- cgit v0.10.2 From ff2e7d5d51469e98196f7933c83b781e96517e7c Mon Sep 17 00:00:00 2001 From: Shrikrishna Khare Date: Fri, 19 Aug 2016 10:33:42 -0700 Subject: vmxnet3: fix tx data ring copy for variable size 'Commit 3c8b3efc061a ("vmxnet3: allow variable length transmit data ring buffer")' changed the size of the buffers in the tx data ring from a fixed size of 128 bytes to a variable size. However, while copying data to the data ring, vmxnet3_copy_hdr continues to carry the old code that assumes fixed buffer size of 128. This patch fixes it by adding correct offset based on the actual data ring buffer size. Signed-off-by: Guolin Yang Signed-off-by: Shrikrishna Khare Signed-off-by: David S. Miller diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index c68fe49..4244b9d 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -914,7 +914,9 @@ vmxnet3_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, { struct Vmxnet3_TxDataDesc *tdd; - tdd = tq->data_ring.base + tq->tx_ring.next2fill; + tdd = (struct Vmxnet3_TxDataDesc *)((u8 *)tq->data_ring.base + + tq->tx_ring.next2fill * + tq->txdata_desc_size); memcpy(tdd->data, skb->data, ctx->copy_size); netdev_dbg(adapter->netdev, diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h index 74fc030..7dc37a0 100644 --- a/drivers/net/vmxnet3/vmxnet3_int.h +++ b/drivers/net/vmxnet3/vmxnet3_int.h @@ -69,10 +69,10 @@ /* * Version numbers */ -#define VMXNET3_DRIVER_VERSION_STRING "1.4.9.0-k" +#define VMXNET3_DRIVER_VERSION_STRING "1.4.a.0-k" /* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */ -#define VMXNET3_DRIVER_VERSION_NUM 0x01040900 +#define VMXNET3_DRIVER_VERSION_NUM 0x01040a00 #if defined(CONFIG_PCI_MSI) /* RSS only makes sense if MSI-X is supported. */ -- cgit v0.10.2 From 6695593e4a7659db49ac6eca98c164f7b5589f72 Mon Sep 17 00:00:00 2001 From: Aleksandr Makarov Date: Sat, 20 Aug 2016 13:29:41 +0300 Subject: USB: serial: option: add WeTelecom WM-D200 Add support for WeTelecom WM-D200. T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=22de ProdID=6801 Rev=00.00 S: Manufacturer=WeTelecom Incorporated S: Product=WeTelecom Mobile Products C: #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 3 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage Signed-off-by: Aleksandr Makarov Cc: stable Signed-off-by: Johan Hovold diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index bc47258..bb6a711 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -525,6 +525,10 @@ static void option_instat_callback(struct urb *urb); #define VIATELECOM_VENDOR_ID 0x15eb #define VIATELECOM_PRODUCT_CDS7 0x0001 +/* WeTelecom products */ +#define WETELECOM_VENDOR_ID 0x22de +#define WETELECOM_PRODUCT_WMD200 0x6801 + struct option_blacklist_info { /* bitmask of interface numbers blacklisted for send_setup */ const unsigned long sendsetup; @@ -1991,6 +1995,7 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) }, { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) }, + { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD200, 0xff, 0xff, 0xff) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); -- cgit v0.10.2 From 5575cf133cf7f564da991595c6bc9344afa7d89a Mon Sep 17 00:00:00 2001 From: Daniel Romell Date: Fri, 19 Aug 2016 14:12:01 +0200 Subject: net: xilinx: emaclite: Fallback to random MAC address. If the address configured in the device tree is invalid, the driver will fallback to using a random address from the locally administered range. Signed-off-by: Daniel Romell Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index 3cee84a..93dc10b 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -1131,11 +1131,13 @@ static int xemaclite_of_probe(struct platform_device *ofdev) lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong"); mac_address = of_get_mac_address(ofdev->dev.of_node); - if (mac_address) + if (mac_address) { /* Set the MAC address. */ memcpy(ndev->dev_addr, mac_address, ETH_ALEN); - else - dev_warn(dev, "No MAC address found\n"); + } else { + dev_warn(dev, "No MAC address found, using random\n"); + eth_hw_addr_random(ndev); + } /* Clear the Tx CSR's in case this is a restart */ __raw_writel(0, lp->base_addr + XEL_TSR_OFFSET); -- cgit v0.10.2 From 522caebb2c3684f4a1d154526fb5e33f1381e92a Mon Sep 17 00:00:00 2001 From: Giorgio Dal Molin Date: Tue, 16 Aug 2016 20:43:37 +0200 Subject: iio:ti-ads1015: fix a wrong pointer definition. The call to i2c_get_clientdata(client) returns a struct iio_dev*, not the needed struct ads1015_data*. We need here an intermediate step as in the function: void ads1015_get_channels_config(struct i2c_client *client). Signed-off-by: Giorgio Dal Molin Fixes: ecc24e72f437 ("iio: adc: Add TI ADS1015 ADC driver support") Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c index 1ef39877..066abaf 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -489,7 +489,8 @@ static struct iio_info ads1115_info = { #ifdef CONFIG_OF static int ads1015_get_channels_config_of(struct i2c_client *client) { - struct ads1015_data *data = i2c_get_clientdata(client); + struct iio_dev *indio_dev = i2c_get_clientdata(client); + struct ads1015_data *data = iio_priv(indio_dev); struct device_node *node; if (!client->dev.of_node || -- cgit v0.10.2 From 80e162ee9b31d77d851b10f8c5299132be1e120f Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Wed, 29 Jun 2016 20:27:44 +0100 Subject: staging: comedi: daqboard2000: bug fix board type matching code `daqboard2000_find_boardinfo()` is supposed to check if the DaqBoard/2000 series model is supported, based on the PCI subvendor and subdevice ID. The current code is wrong as it is comparing the PCI device's subdevice ID to an expected, fixed value for the subvendor ID. It should be comparing the PCI device's subvendor ID to this fixed value. Correct it. Fixes: 7e8401b23e7f ("staging: comedi: daqboard2000: add back subsystem_device check") Signed-off-by: Ian Abbott Cc: # 3.7+ Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/comedi/drivers/daqboard2000.c b/drivers/staging/comedi/drivers/daqboard2000.c index 65daef0..0f4eb95 100644 --- a/drivers/staging/comedi/drivers/daqboard2000.c +++ b/drivers/staging/comedi/drivers/daqboard2000.c @@ -634,7 +634,7 @@ static const void *daqboard2000_find_boardinfo(struct comedi_device *dev, const struct daq200_boardtype *board; int i; - if (pcidev->subsystem_device != PCI_VENDOR_ID_IOTECH) + if (pcidev->subsystem_vendor != PCI_VENDOR_ID_IOTECH) return NULL; for (i = 0; i < ARRAY_SIZE(boardtypes); i++) { -- cgit v0.10.2 From 403fe7f34e3327ddac2e06a15e76a293d613381e Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Thu, 30 Jun 2016 19:58:32 +0100 Subject: staging: comedi: comedi_test: fix timer race conditions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 73e0e4dfed4c ("staging: comedi: comedi_test: fix timer lock-up") fixed a lock-up in the timer routine `waveform_ai_timer()` (which was called `waveform_ai_interrupt()` at the time) caused by commit 240512474424 ("staging: comedi: comedi_test: use comedi_handle_events()"). However, it introduced a race condition that can result in the timer routine misbehaving, such as accessing freed memory or dereferencing a NULL pointer. 73e0... changed the timer routine to do nothing unless a `WAVEFORM_AI_RUNNING` flag was set, and changed `waveform_ai_cancel()` to clear the flag and replace a call to `del_timer_sync()` with a call to `del_timer()`. `waveform_ai_cancel()` may be called from the timer routine itself (via `comedi_handle_events()`), or from `do_cancel()`. (`do_cancel()` is called as a result of a file operation (usually a `COMEDI_CANCEL` ioctl command, or a release), or during device removal.) When called from `do_cancel()`, the call to `waveform_ai_cancel()` is followed by a call to `do_become_nonbusy()`, which frees up stuff for the current asynchronous command under the assumption that it is now safe to do so. The race condition occurs when the timer routine `waveform_ai_timer()` checks the `WAVEFORM_AI_RUNNING` flag just before it is cleared by `waveform_ai_cancel()`, and is still running during the call to `do_become_nonbusy()`. In particular, it can lead to a NULL pointer dereference: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] waveform_ai_timer+0x17d/0x290 [comedi_test] That corresponds to this line in `waveform_ai_timer()`: unsigned int chanspec = cmd->chanlist[async->cur_chan]; but `do_become_nonbusy()` frees `cmd->chanlist` and sets it to `NULL`. Fix the race by calling `del_timer_sync()` instead of `del_timer()` in `waveform_ai_cancel()` when not in an interrupt context. The only time `waveform_ai_cancel()` is called in an interrupt context is when it is called from the timer routine itself, via `comedi_handle_events()`. There is no longer any need for the `WAVEFORM_AI_RUNNING` flag, so get rid of it. The bug was copied from the AI subdevice to the AO when support for commands on the AO subdevice was added by commit 0cf55bbef2f9 ("staging: comedi: comedi_test: implement commands on AO subdevice"). That involves the timer routine `waveform_ao_timer()`, the comedi "cancel" routine `waveform_ao_cancel()`, and the flag `WAVEFORM_AO_RUNNING`. Fix it in the same way as for the AI subdevice. Fixes: 73e0e4dfed4c ("staging: comedi: comedi_test: fix timer lock-up") Fixes: 0cf55bbef2f9 ("staging: comedi: comedi_test: implement commands on AO subdevice") Reported-by: Éric Piel Signed-off-by: Ian Abbott Cc: # 4.4+ Cc: Éric Piel Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c index 4ab1866..ec5b9a2 100644 --- a/drivers/staging/comedi/drivers/comedi_test.c +++ b/drivers/staging/comedi/drivers/comedi_test.c @@ -56,11 +56,6 @@ #define N_CHANS 8 -enum waveform_state_bits { - WAVEFORM_AI_RUNNING, - WAVEFORM_AO_RUNNING -}; - /* Data unique to this driver */ struct waveform_private { struct timer_list ai_timer; /* timer for AI commands */ @@ -68,7 +63,6 @@ struct waveform_private { unsigned int wf_amplitude; /* waveform amplitude in microvolts */ unsigned int wf_period; /* waveform period in microseconds */ unsigned int wf_current; /* current time in waveform period */ - unsigned long state_bits; unsigned int ai_scan_period; /* AI scan period in usec */ unsigned int ai_convert_period; /* AI conversion period in usec */ struct timer_list ao_timer; /* timer for AO commands */ @@ -191,10 +185,6 @@ static void waveform_ai_timer(unsigned long arg) unsigned int nsamples; unsigned int time_increment; - /* check command is still active */ - if (!test_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits)) - return; - now = ktime_to_us(ktime_get()); nsamples = comedi_nsamples_left(s, UINT_MAX); @@ -386,11 +376,6 @@ static int waveform_ai_cmd(struct comedi_device *dev, */ devpriv->ai_timer.expires = jiffies + usecs_to_jiffies(devpriv->ai_convert_period) + 1; - - /* mark command as active */ - smp_mb__before_atomic(); - set_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits); - smp_mb__after_atomic(); add_timer(&devpriv->ai_timer); return 0; } @@ -400,11 +385,12 @@ static int waveform_ai_cancel(struct comedi_device *dev, { struct waveform_private *devpriv = dev->private; - /* mark command as no longer active */ - clear_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits); - smp_mb__after_atomic(); - /* cannot call del_timer_sync() as may be called from timer routine */ - del_timer(&devpriv->ai_timer); + if (in_softirq()) { + /* Assume we were called from the timer routine itself. */ + del_timer(&devpriv->ai_timer); + } else { + del_timer_sync(&devpriv->ai_timer); + } return 0; } @@ -436,10 +422,6 @@ static void waveform_ao_timer(unsigned long arg) u64 scans_since; unsigned int scans_avail = 0; - /* check command is still active */ - if (!test_bit(WAVEFORM_AO_RUNNING, &devpriv->state_bits)) - return; - /* determine number of scan periods since last time */ now = ktime_to_us(ktime_get()); scans_since = now - devpriv->ao_last_scan_time; @@ -518,11 +500,6 @@ static int waveform_ao_inttrig_start(struct comedi_device *dev, devpriv->ao_last_scan_time = ktime_to_us(ktime_get()); devpriv->ao_timer.expires = jiffies + usecs_to_jiffies(devpriv->ao_scan_period); - - /* mark command as active */ - smp_mb__before_atomic(); - set_bit(WAVEFORM_AO_RUNNING, &devpriv->state_bits); - smp_mb__after_atomic(); add_timer(&devpriv->ao_timer); return 1; @@ -608,11 +585,12 @@ static int waveform_ao_cancel(struct comedi_device *dev, struct waveform_private *devpriv = dev->private; s->async->inttrig = NULL; - /* mark command as no longer active */ - clear_bit(WAVEFORM_AO_RUNNING, &devpriv->state_bits); - smp_mb__after_atomic(); - /* cannot call del_timer_sync() as may be called from timer routine */ - del_timer(&devpriv->ao_timer); + if (in_softirq()) { + /* Assume we were called from the timer routine itself. */ + del_timer(&devpriv->ao_timer); + } else { + del_timer_sync(&devpriv->ao_timer); + } return 0; } -- cgit v0.10.2 From 5ca05345c56cb979e1a25ab6146437002f95cac8 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Wed, 20 Jul 2016 17:07:34 +0100 Subject: staging: comedi: ni_mio_common: fix wrong insn_write handler MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For counter subdevices, the `s->insn_write` handler is being set to the wrong function, `ni_tio_insn_read()`. It should be `ni_tio_insn_write()`. Signed-off-by: Ian Abbott Reported-by: Éric Piel Fixes: 10f74377eec3 ("staging: comedi: ni_tio: make ni_tio_winsn() a proper comedi (*insn_write)" Cc: # 3.17+ Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index 8dabb19..3cf3c05 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -5480,7 +5480,7 @@ static int ni_E_init(struct comedi_device *dev, s->maxdata = (devpriv->is_m_series) ? 0xffffffff : 0x00ffffff; s->insn_read = ni_tio_insn_read; - s->insn_write = ni_tio_insn_read; + s->insn_write = ni_tio_insn_write; s->insn_config = ni_tio_insn_config; #ifdef PCIDMA if (dev->irq && devpriv->mite) { -- cgit v0.10.2 From c71f20ee76342376e3c4c67cdbe7421d8c4e886e Mon Sep 17 00:00:00 2001 From: Phil Turnbull Date: Fri, 29 Jul 2016 09:43:56 -0400 Subject: staging: comedi: adv_pci1760: Do not return EINVAL for CMDF_ROUND_DOWN. The CMDF_ROUND_DOWN case falls through and so always returns -EINVAL. Fixes: 14b93bb6bbf0 ("staging: comedi: adv_pci_dio: separate out PCI-1760 support") Signed-off-by: Phil Turnbull Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/comedi/drivers/adv_pci1760.c b/drivers/staging/comedi/drivers/adv_pci1760.c index d7dd1e5..9f525ff 100644 --- a/drivers/staging/comedi/drivers/adv_pci1760.c +++ b/drivers/staging/comedi/drivers/adv_pci1760.c @@ -196,6 +196,7 @@ static int pci1760_pwm_ns_to_div(unsigned int flags, unsigned int ns) break; case CMDF_ROUND_DOWN: divisor = ns / PCI1760_PWM_TIMEBASE; + break; default: return -EINVAL; } -- cgit v0.10.2 From 5ac5c3bcf57419d0aa3f53b12b8c07599a13fdcc Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 21 Jun 2016 14:46:21 +0300 Subject: staging: comedi: dt2811: fix a precedence bug Bitwise | has higher precedence than ?: so we need to add some parenthesis for this to work as intended. Fixes: 7c9574090d30 ('staging: comedi: dt2811: simplify A/D reference configuration') Signed-off-by: Dan Carpenter Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/comedi/drivers/dt2811.c b/drivers/staging/comedi/drivers/dt2811.c index 904f6377..8bbd938 100644 --- a/drivers/staging/comedi/drivers/dt2811.c +++ b/drivers/staging/comedi/drivers/dt2811.c @@ -588,8 +588,8 @@ static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it) s = &dev->subdevices[0]; s->type = COMEDI_SUBD_AI; s->subdev_flags = SDF_READABLE | - (it->options[2] == 1) ? SDF_DIFF : - (it->options[2] == 2) ? SDF_COMMON : SDF_GROUND; + ((it->options[2] == 1) ? SDF_DIFF : + (it->options[2] == 2) ? SDF_COMMON : SDF_GROUND); s->n_chan = (it->options[2] == 1) ? 8 : 16; s->maxdata = 0x0fff; s->range_table = board->is_pgh ? &dt2811_pgh_ai_ranges -- cgit v0.10.2 From f0f4b0cc3a8cffd983f5940d46cd0227f3f5710a Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 19 Jul 2016 12:17:39 +0100 Subject: staging: comedi: ni_mio_common: fix AO inttrig backwards compatibility Commit ebb657babfa9 ("staging: comedi: ni_mio_common: clarify the cmd->start_arg validation and use") introduced a backwards compatibility issue in the use of asynchronous commands on the AO subdevice when `start_src` is `TRIG_EXT`. Valid values for `start_src` are `TRIG_INT` (for internal, software trigger), and `TRIG_EXT` (for external trigger). When set to `TRIG_EXT`. In both cases, the driver relies on an internal, software trigger to set things up (allowing the user application to write sufficient samples to the data buffer before the trigger), so it acts as a software "pre-trigger" in the `TRIG_EXT` case. The software trigger is handled by `ni_ao_inttrig()`. Prior to the above change, when `start_src` was `TRIG_INT`, `start_arg` was required to be 0, and `ni_ao_inttrig()` checked that the software trigger number was also 0. After the above change, when `start_src` was `TRIG_INT`, any value was allowed for `start_arg`, and `ni_ao_inttrig()` checked that the software trigger number matched this `start_arg` value. The backwards compatibility issue is that the internal trigger number now has to match `start_arg` when `start_src` is `TRIG_EXT` when it previously had to be 0. Fix the backwards compatibility issue in `ni_ao_inttrig()` by always allowing software trigger number 0 when `start_src` is something other than `TRIG_INT`. Thanks to Spencer Olson for reporting the issue. Signed-off-by: Ian Abbott Reported-by: Spencer Olson Fixes: ebb657babfa9 ("staging: comedi: ni_mio_common: clarify the cmd->start_arg validation and use") Cc: stable Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index 3cf3c05..0f97d7b 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -2772,7 +2772,15 @@ static int ni_ao_inttrig(struct comedi_device *dev, int i; static const int timeout = 1000; - if (trig_num != cmd->start_arg) + /* + * Require trig_num == cmd->start_arg when cmd->start_src == TRIG_INT. + * For backwards compatibility, also allow trig_num == 0 when + * cmd->start_src != TRIG_INT (i.e. when cmd->start_src == TRIG_EXT); + * in that case, the internal trigger is being used as a pre-trigger + * before the external trigger. + */ + if (!(trig_num == cmd->start_arg || + (trig_num == 0 && cmd->start_src != TRIG_INT))) return -EINVAL; /* -- cgit v0.10.2 From fcf68f3c0bb2a541aa47a2a38b8939edf84fd529 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Mon, 8 Aug 2016 17:19:38 -0700 Subject: iio: fix sched WARNING "do not call blocking ops when !TASK_RUNNING" When using CONFIG_DEBUG_ATOMIC_SLEEP, the scheduler nicely points out that we're calling sleeping primitives within the wait_event loop, which means we might clobber the task state: [ 10.831289] do not call blocking ops when !TASK_RUNNING; state=1 set at [] [ 10.845531] ------------[ cut here ]------------ [ 10.850161] WARNING: at kernel/sched/core.c:7630 ... [ 12.164333] ---[ end trace 45409966a9a76438 ]--- [ 12.168942] Call trace: [ 12.171391] [] __might_sleep+0x64/0x90 [ 12.176699] [] mutex_lock_nested+0x50/0x3fc [ 12.182440] [] iio_kfifo_buf_data_available+0x28/0x4c [ 12.189043] [] iio_buffer_ready+0x60/0xe0 [ 12.194608] [] iio_buffer_read_first_n_outer+0x108/0x1a8 [ 12.201474] [] __vfs_read+0x58/0x114 [ 12.206606] [] vfs_read+0x94/0x118 [ 12.211564] [] SyS_read+0x64/0xb4 [ 12.216436] [] el0_svc_naked+0x24/0x28 To avoid this, we should (a la https://lwn.net/Articles/628628/) use the wait_woken() function, which avoids the nested sleeping while still handling races between waiting / wake-events. Signed-off-by: Brian Norris Reviewed-by: Lars-Peter Clausen Cc: # 3.19+ for introduction of wake_woken Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 90462fc..49bf9c5 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -107,6 +107,7 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, { struct iio_dev *indio_dev = filp->private_data; struct iio_buffer *rb = indio_dev->buffer; + DEFINE_WAIT_FUNC(wait, woken_wake_function); size_t datum_size; size_t to_wait; int ret; @@ -131,19 +132,29 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, else to_wait = min_t(size_t, n / datum_size, rb->watermark); + add_wait_queue(&rb->pollq, &wait); do { - ret = wait_event_interruptible(rb->pollq, - iio_buffer_ready(indio_dev, rb, to_wait, n / datum_size)); - if (ret) - return ret; + if (!indio_dev->info) { + ret = -ENODEV; + break; + } - if (!indio_dev->info) - return -ENODEV; + if (!iio_buffer_ready(indio_dev, rb, to_wait, n / datum_size)) { + if (signal_pending(current)) { + ret = -ERESTARTSYS; + break; + } + + wait_woken(&wait, TASK_INTERRUPTIBLE, + MAX_SCHEDULE_TIMEOUT); + continue; + } ret = rb->access->read_first_n(rb, n, buf); if (ret == 0 && (filp->f_flags & O_NONBLOCK)) ret = -EAGAIN; } while (ret == 0); + remove_wait_queue(&rb->pollq, &wait); return ret; } -- cgit v0.10.2 From ca64d4bc80a88845f7e1e266dbff798f928bcc06 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 25 Jul 2016 23:06:56 +0100 Subject: iio: chemical: atlas-ph-sensor: fix typo in val assignment Fix an incorrect assignment due to a typo on a variable name. The variable val2 should be assigned 100000 and not val. Signed-off-by: Colin Ian King Reviewed-By: Matt Ranostay Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c index ae038a5..407f141 100644 --- a/drivers/iio/chemical/atlas-ph-sensor.c +++ b/drivers/iio/chemical/atlas-ph-sensor.c @@ -434,7 +434,7 @@ static int atlas_read_raw(struct iio_dev *indio_dev, break; case IIO_ELECTRICALCONDUCTIVITY: *val = 1; /* 0.00001 */ - *val = 100000; + *val2 = 100000; break; case IIO_CONCENTRATION: *val = 0; /* 0.000000001 */ -- cgit v0.10.2 From d9a8594011080def9202f2c258f755647fe66683 Mon Sep 17 00:00:00 2001 From: Aditya Shankar Date: Tue, 2 Aug 2016 11:49:00 +0200 Subject: MAINTAINERS: Update maintainer entry for wilc1000 Take the maintenance of the Atmel WIFI staging driver wilc1000. Former maintainers are no more with Atmel. Reported-by: Loic Lefort Signed-off-by: Aditya Shankar Signed-off-by: Ganesh Krishna Acked-by: Luis de Bethencourt Signed-off-by: Nicolas Ferre Signed-off-by: Greg Kroah-Hartman diff --git a/MAINTAINERS b/MAINTAINERS index a306795..09c7066 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11217,12 +11217,8 @@ S: Odd Fixes F: drivers/staging/vt665?/ STAGING - WILC1000 WIFI DRIVER -M: Johnny Kim -M: Austin Shin -M: Chris Park -M: Tony Cho -M: Glen Lee -M: Leo Kim +M: Aditya Shankar +M: Ganesh Krishna L: linux-wireless@vger.kernel.org S: Supported F: drivers/staging/wilc1000/ -- cgit v0.10.2 From e9d766b965a15816cf9ec353d86c11f27b783d4d Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Sun, 22 May 2016 11:05:38 +0200 Subject: MAINTAINERS: Add file patterns for ion device tree bindings Submitters of device tree binding documentation may forget to CC the subsystem maintainer if this is missing. Signed-off-by: Geert Uytterhoeven Cc: Sumit Semwal Cc: devel@driverdev.osuosl.org Acked-by: Laura Abbott Signed-off-by: Greg Kroah-Hartman diff --git a/MAINTAINERS b/MAINTAINERS index 09c7066..e614392 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -798,6 +798,7 @@ M: Laura Abbott M: Sumit Semwal L: devel@driverdev.osuosl.org S: Supported +F: Documentation/devicetree/bindings/staging/ion/ F: drivers/staging/android/ion F: drivers/staging/android/uapi/ion.h F: drivers/staging/android/uapi/ion_test.h -- cgit v0.10.2 From 23535c1322e42e71f32bfbeae9970f4dba31e3bd Mon Sep 17 00:00:00 2001 From: Binoy Jayan Date: Thu, 21 Jul 2016 13:26:56 +0530 Subject: staging: wilc1000: txq_event: Fix coding error Fix incorrect usage of completion interface by replacing 'wait_for_completion' with 'complete'. This error was introduced accidentally while replacing semaphores with mutexes. Reported-by: Jiri Slaby Signed-off-by: Binoy Jayan Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c index 3a66255..3221511 100644 --- a/drivers/staging/wilc1000/linux_wlan.c +++ b/drivers/staging/wilc1000/linux_wlan.c @@ -648,7 +648,7 @@ void wilc1000_wlan_deinit(struct net_device *dev) mutex_unlock(&wl->hif_cs); } if (&wl->txq_event) - wait_for_completion(&wl->txq_event); + complete(&wl->txq_event); wlan_deinitialize_threads(dev); deinit_irq(dev); -- cgit v0.10.2 From 23436825e671cdd55c45d151ddc66fd3c47d10e9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 16 Jul 2016 13:07:55 +0300 Subject: staging: wilc1000: NULL dereference on error We can't pass NULL pointers to destroy_workqueue(). Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c index 0b1760c..78f524f 100644 --- a/drivers/staging/wilc1000/host_interface.c +++ b/drivers/staging/wilc1000/host_interface.c @@ -3363,7 +3363,7 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler) if (!hif_workqueue) { netdev_err(vif->ndev, "Failed to create workqueue\n"); result = -ENOMEM; - goto _fail_mq_; + goto _fail_; } setup_timer(&periodic_rssi, GetPeriodicRSSI, @@ -3391,7 +3391,6 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler) clients_count++; -_fail_mq_: destroy_workqueue(hif_workqueue); _fail_: return result; -- cgit v0.10.2 From 6c08fda0306916135291103f23cc17248c422c49 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 15 Aug 2016 17:09:52 +0100 Subject: staging: wilc1000: correctly check if associatedsta has not been found The current check for associatedsta being set to -1 to indicate it has not been found is not working because associatedsta is initialized to zero and will never be -1. Fix this by initializing it to ~0 and checking for ~0 instead. Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c index 9092600..2c2e8ac 100644 --- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c +++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c @@ -1191,7 +1191,7 @@ static int get_station(struct wiphy *wiphy, struct net_device *dev, struct wilc_priv *priv; struct wilc_vif *vif; u32 i = 0; - u32 associatedsta = 0; + u32 associatedsta = ~0; u32 inactive_time = 0; priv = wiphy_priv(wiphy); vif = netdev_priv(dev); @@ -1204,7 +1204,7 @@ static int get_station(struct wiphy *wiphy, struct net_device *dev, } } - if (associatedsta == -1) { + if (associatedsta == ~0) { netdev_err(dev, "sta required is not associated\n"); return -ENOENT; } -- cgit v0.10.2 From c0678b2d6648ab65b68703044709e367799ba9f9 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 15 Aug 2016 15:52:23 -0700 Subject: include/linux: fix excess fence.h kernel-doc notation Fix excess fields in kernel-doc notation in after some struct fields were removed. Fixes these kernel-doc warnings: ..//include/linux/fence.h:85: warning: Excess struct/union/enum/typedef member 'child_list' description in 'fence' ..//include/linux/fence.h:85: warning: Excess struct/union/enum/typedef member 'active_list' description in 'fence' Fixes: 0431b9065f28 ("staging/android: bring struct sync_pt back") Cc: Daniel Vetter Cc: Sumit Semwal Cc: Luis de Bethencourt Signed-off-by: Randy Dunlap Reviewed-by: Gustavo Padovan Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/fence.h b/include/linux/fence.h index 8cc719a..2ac6fa5 100644 --- a/include/linux/fence.h +++ b/include/linux/fence.h @@ -49,8 +49,6 @@ struct fence_cb; * @timestamp: Timestamp when the fence was signaled. * @status: Optional, only valid if < 0, must be set before calling * fence_signal, indicates that the fence has completed with an error. - * @child_list: list of children fences - * @active_list: list of active fences * * the flags member must be manipulated and read using the appropriate * atomic ops (bit_*), so taking the spinlock will not be needed most -- cgit v0.10.2 From 90c43ec6997a892448f1f86180a515f59cafd8a3 Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Wed, 17 Aug 2016 17:43:00 +0530 Subject: iio: adc: ti_am335x_adc: Protect FIFO1 from concurrent access It is possible that two or more ADC channels can be simultaneously requested for raw samples, in which case there can be race in access to FIFO data resulting in loss of samples. If am335x_tsc_se_set_once() is called again from tiadc_read_raw(), when ADC is still acquired to sample one of the channels, the second process might be put into uninterruptible sleep state. Fix these issues, by protecting FIFO access and channel configurations with a mutex. Since tiadc_read_raw() might take anywhere between few microseconds to few milliseconds to finish execution (depending on averaging and delay values supplied via DT), its better to use mutex instead of spinlock. Fixes: 7ca6740cd1cd4 ("mfd: input: iio: ti_amm335x: Rework TSC/ADC synchronization") Signed-off-by: Vignesh R Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 8a36875..bed9977 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -32,6 +32,7 @@ struct tiadc_device { struct ti_tscadc_dev *mfd_tscadc; + struct mutex fifo1_lock; /* to protect fifo access */ int channels; u8 channel_line[8]; u8 channel_step[8]; @@ -359,6 +360,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct tiadc_device *adc_dev = iio_priv(indio_dev); + int ret = IIO_VAL_INT; int i, map_val; unsigned int fifo1count, read, stepid; bool found = false; @@ -372,6 +374,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, if (!step_en) return -EINVAL; + mutex_lock(&adc_dev->fifo1_lock); fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT); while (fifo1count--) tiadc_readl(adc_dev, REG_FIFO1); @@ -388,7 +391,8 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, if (time_after(jiffies, timeout)) { am335x_tsc_se_adc_done(adc_dev->mfd_tscadc); - return -EAGAIN; + ret = -EAGAIN; + goto err_unlock; } } map_val = adc_dev->channel_step[chan->scan_index]; @@ -414,8 +418,11 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, am335x_tsc_se_adc_done(adc_dev->mfd_tscadc); if (found == false) - return -EBUSY; - return IIO_VAL_INT; + ret = -EBUSY; + +err_unlock: + mutex_unlock(&adc_dev->fifo1_lock); + return ret; } static const struct iio_info tiadc_info = { @@ -483,6 +490,7 @@ static int tiadc_probe(struct platform_device *pdev) tiadc_step_config(indio_dev); tiadc_writel(adc_dev, REG_FIFO1THR, FIFO1_THRESHOLD); + mutex_init(&adc_dev->fifo1_lock); err = tiadc_channel_init(indio_dev, adc_dev->channels); if (err < 0) -- cgit v0.10.2 From 7175cce1c3f1d8c8840d2004f78f96a3904249b5 Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Wed, 17 Aug 2016 17:43:01 +0530 Subject: iio: adc: ti_am335x_adc: Increase timeout value waiting for ADC sample Now that open delay and sample delay for each channel is configurable via DT, the default IDLE_TIMEOUT value is not enough as this is calculated based on hardcoded macros. This results in driver returning EBUSY sometimes. Fix this by increasing the timeout value based on maximum value possible to open delay and sample delays for each channel. Fixes: 5dc11e810676e ("iio: adc: ti_am335x_adc: make sample delay, open delay, averaging DT parameters") Signed-off-by: Vignesh R Acked-by: Lee Jones Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index bed9977..c3cfacc 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -381,7 +381,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, am335x_tsc_se_set_once(adc_dev->mfd_tscadc, step_en); - timeout = jiffies + usecs_to_jiffies + timeout = jiffies + msecs_to_jiffies (IDLE_TIMEOUT * adc_dev->channels); /* Wait for Fifo threshold interrupt */ while (1) { diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h index 2567a87..7f55b8b 100644 --- a/include/linux/mfd/ti_am335x_tscadc.h +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -138,16 +138,16 @@ /* * time in us for processing a single channel, calculated as follows: * - * num cycles = open delay + (sample delay + conv time) * averaging + * max num cycles = open delay + (sample delay + conv time) * averaging * - * num cycles: 152 + (1 + 13) * 16 = 376 + * max num cycles: 262143 + (255 + 13) * 16 = 266431 * * clock frequency: 26MHz / 8 = 3.25MHz * clock period: 1 / 3.25MHz = 308ns * - * processing time: 376 * 308ns = 116us + * max processing time: 266431 * 308ns = 83ms(approx) */ -#define IDLE_TIMEOUT 116 /* microsec */ +#define IDLE_TIMEOUT 83 /* milliseconds */ #define TSCADC_CELLS 2 -- cgit v0.10.2 From 7ac61a062f3147dc23e3f12b9dfe7c4dd35f9cb8 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 16 Aug 2016 15:33:28 +0200 Subject: iio: accel: kxsd9: Fix raw read return Any readings from the raw interface of the KXSD9 driver will return an empty string, because it does not return IIO_VAL_INT but rather some random value from the accelerometer to the caller. Cc: stable@vger.kernel.org Signed-off-by: Linus Walleij Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index 3a9f106..da5fb67 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -160,6 +160,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev, if (ret < 0) goto error_ret; *val = ret; + ret = IIO_VAL_INT; break; case IIO_CHAN_INFO_SCALE: ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C)); -- cgit v0.10.2 From d524d84b588e300418a99794eb5066683ec7c488 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Sun, 21 Aug 2016 15:24:33 +0100 Subject: net: tehuti: fix typo: "eneble" -> "enable" trivial typo fix in pr_err message Signed-off-by: Colin Ian King Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/tehuti/tehuti.c b/drivers/net/ethernet/tehuti/tehuti.c index 7452b5f..7108c68 100644 --- a/drivers/net/ethernet/tehuti/tehuti.c +++ b/drivers/net/ethernet/tehuti/tehuti.c @@ -1987,7 +1987,7 @@ bdx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if ((readl(nic->regs + FPGA_VER) & 0xFFF) >= 378) { err = pci_enable_msi(pdev); if (err) - pr_err("Can't eneble msi. error is %d\n", err); + pr_err("Can't enable msi. error is %d\n", err); else nic->irq_type = IRQ_MSI; } else -- cgit v0.10.2 From e340eca90ee18547027a6d5745ffabf7d173dfcc Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 14 Aug 2016 13:53:17 -0700 Subject: powerpc: cputhreads: Add missing include file Powerpc builds may fail with the following build error. Error log: In file included from ./arch/powerpc/include/asm/mmu_context.h:11:0, from ./include/linux/mmu_context.h:4, from mm/mmu_context.c:8: ./arch/powerpc/include/asm/cputhreads.h: In function 'get_tensr': ./arch/powerpc/include/asm/cputhreads.h:101:2: error: implicit declaration of function 'cpu_has_feature' The problem can be triggered by configuring ppc64e_defconfig and selecting CONFIG_TICK_CPU_ACCOUNTING instead of CONFIG_VIRT_CPU_ACCOUNTING_NATIVE. Fixes: b92a226e5284 ("powerpc: Move cpu_has_feature() to a separate file") Signed-off-by: Guenter Roeck Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/cputhreads.h b/arch/powerpc/include/asm/cputhreads.h index 666bef4e..9377bdf 100644 --- a/arch/powerpc/include/asm/cputhreads.h +++ b/arch/powerpc/include/asm/cputhreads.h @@ -3,6 +3,7 @@ #ifndef __ASSEMBLY__ #include +#include /* * Mapping of threads to cores -- cgit v0.10.2 From aded76bac54d1dd0a9c9203aa29a78423edc4cde Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Sun, 14 Aug 2016 21:42:17 +0200 Subject: drivers/macintosh: Delete owner assignment The field "owner" is set by core. Thus delete an extra initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring Signed-off-by: Benjamin Herrenschmidt diff --git a/drivers/macintosh/ams/ams-i2c.c b/drivers/macintosh/ams/ams-i2c.c index 978eda8..8a3ba56 100644 --- a/drivers/macintosh/ams/ams-i2c.c +++ b/drivers/macintosh/ams/ams-i2c.c @@ -73,7 +73,6 @@ MODULE_DEVICE_TABLE(i2c, ams_id); static struct i2c_driver ams_i2c_driver = { .driver = { .name = "ams", - .owner = THIS_MODULE, }, .probe = ams_i2c_probe, .remove = ams_i2c_remove, diff --git a/drivers/macintosh/windfarm_pm112.c b/drivers/macintosh/windfarm_pm112.c index 3024685..96d16fc 100644 --- a/drivers/macintosh/windfarm_pm112.c +++ b/drivers/macintosh/windfarm_pm112.c @@ -668,7 +668,6 @@ static struct platform_driver wf_pm112_driver = { .remove = wf_pm112_remove, .driver = { .name = "windfarm", - .owner = THIS_MODULE, }, }; diff --git a/drivers/macintosh/windfarm_pm72.c b/drivers/macintosh/windfarm_pm72.c index 2f506b9..e88cfb3 100644 --- a/drivers/macintosh/windfarm_pm72.c +++ b/drivers/macintosh/windfarm_pm72.c @@ -789,7 +789,6 @@ static struct platform_driver wf_pm72_driver = { .remove = wf_pm72_remove, .driver = { .name = "windfarm", - .owner = THIS_MODULE, }, }; diff --git a/drivers/macintosh/windfarm_rm31.c b/drivers/macintosh/windfarm_rm31.c index 82fc86a..bdfcb8a 100644 --- a/drivers/macintosh/windfarm_rm31.c +++ b/drivers/macintosh/windfarm_rm31.c @@ -682,7 +682,6 @@ static struct platform_driver wf_rm31_driver = { .remove = wf_rm31_remove, .driver = { .name = "windfarm", - .owner = THIS_MODULE, }, }; -- cgit v0.10.2 From e72e799c0901b689c83468623cfcb85df431e882 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Mon, 15 Aug 2016 22:07:54 +0200 Subject: powerpc/512x: Delete unnecessary assignment for the field "owner" The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c b/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c index 8eb82b0..d93dd4a 100644 --- a/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c +++ b/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c @@ -528,7 +528,6 @@ static struct platform_driver mpc512x_lpbfifo_driver = { .remove = mpc512x_lpbfifo_remove, .driver = { .name = DRV_NAME, - .owner = THIS_MODULE, .of_match_table = mpc512x_lpbfifo_match, }, }; -- cgit v0.10.2 From f5ed841ce75ca33f413c394110d6dc002c097b01 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Mon, 15 Aug 2016 22:36:05 +0200 Subject: powerpc: mpc8349emitx: Delete unnecessary assignment for the field "owner" The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c index dbcd030..63c5ab64 100644 --- a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c +++ b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c @@ -222,7 +222,6 @@ static const struct of_device_id mcu_of_match_table[] = { static struct i2c_driver mcu_driver = { .driver = { .name = "mcu-mpc8349emitx", - .owner = THIS_MODULE, .of_match_table = mcu_of_match_table, }, .probe = mcu_probe, -- cgit v0.10.2 From 6f38a8b9a45833495dc878c335c5431cd98a16ed Mon Sep 17 00:00:00 2001 From: Andrew Donnellan Date: Thu, 18 Aug 2016 17:35:14 +1000 Subject: cxl: use pcibios_free_controller_deferred() when removing vPHBs When cxl removes a vPHB, it's possible that the pci_controller may be freed before all references to the devices on the vPHB have been released. This in turn causes an invalid memory access when the devices are eventually released, as pcibios_release_device() attempts to call the phb's release_device hook. In cxl_pci_vphb_remove(), remove the existing call to pcibios_free_controller(). Instead, use pcibios_free_controller_deferred() to free the pci_controller after all devices have been released. Export pci_set_host_bridge_release() so we can do this. Cc: stable@vger.kernel.org Signed-off-by: Andrew Donnellan Reviewed-by: Matthew R. Ochs Acked-by: Ian Munsie Signed-off-by: Benjamin Herrenschmidt diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c index 7ada5f1..3519ace 100644 --- a/drivers/misc/cxl/vphb.c +++ b/drivers/misc/cxl/vphb.c @@ -230,6 +230,11 @@ int cxl_pci_vphb_add(struct cxl_afu *afu) if (phb->bus == NULL) return -ENXIO; + /* Set release hook on root bus */ + pci_set_host_bridge_release(to_pci_host_bridge(phb->bus->bridge), + pcibios_free_controller_deferred, + (void *) phb); + /* Claim resources. This might need some rework as well depending * whether we are doing probe-only or not, like assigning unassigned * resources etc... @@ -256,7 +261,10 @@ void cxl_pci_vphb_remove(struct cxl_afu *afu) afu->phb = NULL; pci_remove_root_bus(phb->bus); - pcibios_free_controller(phb); + /* + * We don't free phb here - that's handled by + * pcibios_free_controller_deferred() + */ } static bool _cxl_pci_is_vphb_device(struct pci_controller *phb) diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index 5f4a2e0..add6623 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -44,6 +44,7 @@ void pci_set_host_bridge_release(struct pci_host_bridge *bridge, bridge->release_fn = release_fn; bridge->release_data = release_data; } +EXPORT_SYMBOL_GPL(pci_set_host_bridge_release); void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, struct resource *res) -- cgit v0.10.2 From 2dd9c11b9d4dfbd6c070eab7b81197f65e82f1a0 Mon Sep 17 00:00:00 2001 From: Mauricio Faria de Oliveira Date: Thu, 11 Aug 2016 17:25:40 -0300 Subject: powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb) This patch leverages 'struct pci_host_bridge' from the PCI subsystem in order to free the pci_controller only after the last reference to its devices is dropped (avoiding an oops in pcibios_release_device() if the last reference is dropped after pcibios_free_controller()). The patch relies on pci_host_bridge.release_fn() (and .release_data), which is called automatically by the PCI subsystem when the root bus is released (i.e., the last reference is dropped). Those fields are set via pci_set_host_bridge_release() (e.g. in the platform-specific implementation of pcibios_root_bridge_prepare()). It introduces the 'pcibios_free_controller_deferred()' .release_fn() and it expects .release_data to hold a pointer to the pci_controller. The function implictly calls 'pcibios_free_controller()', so an user must *NOT* explicitly call it if using the new _deferred() callback. The functionality is enabled for pseries (although it isn't platform specific, and may be used by cxl). Details on not-so-elegant design choices: - Use 'pci_host_bridge.release_data' field as pointer to associated 'struct pci_controller' so *not* to 'pci_bus_to_host(bridge->bus)' in pcibios_free_controller_deferred(). That's because pci_remove_root_bus() sets 'host_bridge->bus = NULL' (so, if the last reference is released after pci_remove_root_bus() runs, which eventually reaches pcibios_free_controller_deferred(), that would hit a null pointer dereference). The cxl/vphb.c code calls pci_remove_root_bus(), and the cxl folks are interested in this fix. Test-case #1 (hold references) # ls -ld /sys/block/sd* | grep -m1 0021:01:00.0 <...> /sys/block/sdaa -> ../devices/pci0021:01/0021:01:00.0/<...> # ls -ld /sys/block/sd* | grep -m1 0021:01:00.1 <...> /sys/block/sdab -> ../devices/pci0021:01/0021:01:00.1/<...> # cat >/dev/sdaa & pid1=$! # cat >/dev/sdab & pid2=$! # drmgr -w 5 -d 1 -c phb -s 'PHB 33' -r Validating PHB DLPAR capability...yes. [ 594.306719] pci_hp_remove_devices: PCI: Removing devices on bus 0021:01 [ 594.306738] pci_hp_remove_devices: Removing 0021:01:00.0... ... [ 598.236381] pci_hp_remove_devices: Removing 0021:01:00.1... ... [ 611.972077] pci_bus 0021:01: busn_res: [bus 01-ff] is released [ 611.972140] rpadlpar_io: slot PHB 33 removed # kill -9 $pid1 # kill -9 $pid2 [ 632.918088] pcibios_free_controller_deferred: domain 33, dynamic 1 Test-case #2 (don't hold references) # drmgr -w 5 -d 1 -c phb -s 'PHB 33' -r Validating PHB DLPAR capability...yes. [ 916.357363] pci_hp_remove_devices: PCI: Removing devices on bus 0021:01 [ 916.357386] pci_hp_remove_devices: Removing 0021:01:00.0... ... [ 920.566527] pci_hp_remove_devices: Removing 0021:01:00.1... ... [ 933.955873] pci_bus 0021:01: busn_res: [bus 01-ff] is released [ 933.955977] pcibios_free_controller_deferred: domain 33, dynamic 1 [ 933.955999] rpadlpar_io: slot PHB 33 removed Suggested-By: Gavin Shan Signed-off-by: Mauricio Faria de Oliveira Reviewed-by: Gavin Shan Reviewed-by: Andrew Donnellan Tested-by: Andrew Donnellan # cxl Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index b5e88e4..c0309c5 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -301,6 +301,7 @@ extern void pci_process_bridge_OF_ranges(struct pci_controller *hose, /* Allocate & free a PCI host bridge structure */ extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev); extern void pcibios_free_controller(struct pci_controller *phb); +extern void pcibios_free_controller_deferred(struct pci_host_bridge *bridge); #ifdef CONFIG_PCI extern int pcibios_vaddr_is_ioport(void __iomem *address); diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 7fdf324..e589080 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -154,6 +154,42 @@ void pcibios_free_controller(struct pci_controller *phb) EXPORT_SYMBOL_GPL(pcibios_free_controller); /* + * This function is used to call pcibios_free_controller() + * in a deferred manner: a callback from the PCI subsystem. + * + * _*DO NOT*_ call pcibios_free_controller() explicitly if + * this is used (or it may access an invalid *phb pointer). + * + * The callback occurs when all references to the root bus + * are dropped (e.g., child buses/devices and their users). + * + * It's called as .release_fn() of 'struct pci_host_bridge' + * which is associated with the 'struct pci_controller.bus' + * (root bus) - it expects .release_data to hold a pointer + * to 'struct pci_controller'. + * + * In order to use it, register .release_fn()/release_data + * like this: + * + * pci_set_host_bridge_release(bridge, + * pcibios_free_controller_deferred + * (void *) phb); + * + * e.g. in the pcibios_root_bridge_prepare() callback from + * pci_create_root_bus(). + */ +void pcibios_free_controller_deferred(struct pci_host_bridge *bridge) +{ + struct pci_controller *phb = (struct pci_controller *) + bridge->release_data; + + pr_debug("domain %d, dynamic %d\n", phb->global_number, phb->is_dynamic); + + pcibios_free_controller(phb); +} +EXPORT_SYMBOL_GPL(pcibios_free_controller_deferred); + +/* * The function is used to return the minimal alignment * for memory or I/O windows of the associated P2P bridge. * By default, 4KiB alignment for I/O windows and 1MiB for diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index fe16a50..09eba5a 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -119,6 +119,10 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge) bus = bridge->bus; + /* Rely on the pcibios_free_controller_deferred() callback. */ + pci_set_host_bridge_release(bridge, pcibios_free_controller_deferred, + (void *) pci_bus_to_host(bus)); + dn = pcibios_get_phb_of_node(bus); if (!dn) return 0; diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c index 906dbaa..547fd13 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -106,8 +106,11 @@ int remove_phb_dynamic(struct pci_controller *phb) release_resource(res); } - /* Free pci_controller data structure */ - pcibios_free_controller(phb); + /* + * The pci_controller data structure is freed by + * the pcibios_free_controller_deferred() callback; + * see pseries_root_bridge_prepare(). + */ return 0; } -- cgit v0.10.2 From 6096481649ac27466cf2b453f185b43f680bf541 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Wed, 17 Aug 2016 12:03:05 +0200 Subject: powerpc/powernv/pci: fix iterator signedness Unsigned type is always non-negative, so the loop could not end in case condition is never true. The problem has been detected using semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci Signed-off-by: Andrzej Hajda Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index fd9444f..1321826 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -149,7 +149,7 @@ static void pnv_ioda_reserve_pe(struct pnv_phb *phb, int pe_no) static struct pnv_ioda_pe *pnv_ioda_alloc_pe(struct pnv_phb *phb) { - unsigned long pe = phb->ioda.total_pe_num - 1; + long pe; for (pe = phb->ioda.total_pe_num - 1; pe >= 0; pe--) { if (!test_and_set_bit(pe, phb->ioda.pe_alloc)) -- cgit v0.10.2 From 8a39b05f086904c3b2e04e4db3d81f30c0eae6ae Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Tue, 16 Aug 2016 10:57:34 -0400 Subject: powerpc: migrate exception table users off module.h and onto extable.h These files were only including module.h for exception table related functions. We've now separated that content out into its own file "extable.h" so now move over to that and avoid all the extra header content in module.h that we don't really need to compile these files. Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Paul Gortmaker Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c index 3ed8ec09..e785cc9 100644 --- a/arch/powerpc/kernel/kprobes.c +++ b/arch/powerpc/kernel/kprobes.c @@ -29,7 +29,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 2cb5892..62859eb 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -25,7 +25,8 @@ #include #include #include -#include +#include +#include /* print_modules */ #include #include #include diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index a4db22f..bb1ffc5 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/powerpc/platforms/embedded6xx/holly.c b/arch/powerpc/platforms/embedded6xx/holly.c index dafba10..dfd3100 100644 --- a/arch/powerpc/platforms/embedded6xx/holly.c +++ b/arch/powerpc/platforms/embedded6xx/holly.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #include #include diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c index 80804f9..f97bab8 100644 --- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c +++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c @@ -23,7 +23,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 68e7c0d..3cc7cac 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -23,7 +23,7 @@ */ #include -#include +#include #include #include #include -- cgit v0.10.2 From 19ab58d19ef6291bab07c8e7110f3198c23432c1 Mon Sep 17 00:00:00 2001 From: Boqun Feng Date: Tue, 16 Aug 2016 19:50:12 +0800 Subject: powerpc, hotplug: Avoid to touch non-existent cpumasks. We observed a kernel oops when running a PPC guest with config NR_CPUS=4 and qemu option "-smp cores=1,threads=8": [ 30.634781] Unable to handle kernel paging request for data at address 0xc00000014192eb17 [ 30.636173] Faulting instruction address: 0xc00000000003e5cc [ 30.637069] Oops: Kernel access of bad area, sig: 11 [#1] [ 30.637877] SMP NR_CPUS=4 NUMA pSeries [ 30.638471] Modules linked in: [ 30.638949] CPU: 3 PID: 27 Comm: migration/3 Not tainted 4.7.0-07963-g9714b26 #1 [ 30.640059] task: c00000001e29c600 task.stack: c00000001e2a8000 [ 30.640956] NIP: c00000000003e5cc LR: c00000000003e550 CTR: 0000000000000000 [ 30.642001] REGS: c00000001e2ab8e0 TRAP: 0300 Not tainted (4.7.0-07963-g9714b26) [ 30.643139] MSR: 8000000102803033 CR: 22004084 XER: 00000000 [ 30.644583] CFAR: c000000000009e98 DAR: c00000014192eb17 DSISR: 40000000 SOFTE: 0 GPR00: c00000000140a6b8 c00000001e2abb60 c0000000016dd300 0000000000000003 GPR04: 0000000000000000 0000000000000004 c0000000016e5920 0000000000000008 GPR08: 0000000000000004 c00000014192eb17 0000000000000000 0000000000000020 GPR12: c00000000140a6c0 c00000000ffffc00 c0000000000d3ea8 c00000001e005680 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 c00000001e6b3a00 0000000000000000 0000000000000001 GPR24: c00000001ff85138 c00000001ff85130 000000001eb6f000 0000000000000001 GPR28: 0000000000000000 c0000000017014e0 0000000000000000 0000000000000018 [ 30.653882] NIP [c00000000003e5cc] __cpu_disable+0xcc/0x190 [ 30.654713] LR [c00000000003e550] __cpu_disable+0x50/0x190 [ 30.655528] Call Trace: [ 30.655893] [c00000001e2abb60] [c00000000003e550] __cpu_disable+0x50/0x190 (unreliable) [ 30.657280] [c00000001e2abbb0] [c0000000000aca0c] take_cpu_down+0x5c/0x100 [ 30.658365] [c00000001e2abc10] [c000000000163918] multi_cpu_stop+0x1a8/0x1e0 [ 30.659617] [c00000001e2abc60] [c000000000163cc0] cpu_stopper_thread+0xf0/0x1d0 [ 30.660737] [c00000001e2abd20] [c0000000000d8d70] smpboot_thread_fn+0x290/0x2a0 [ 30.661879] [c00000001e2abd80] [c0000000000d3fa8] kthread+0x108/0x130 [ 30.662876] [c00000001e2abe30] [c000000000009968] ret_from_kernel_thread+0x5c/0x74 [ 30.664017] Instruction dump: [ 30.664477] 7bde1f24 38a00000 787f1f24 3b600001 39890008 7d204b78 7d05e214 7d0b07b4 [ 30.665642] 796b1f24 7d26582a 7d204a14 7d29f214 <7d4048a8> 7d4a3878 7d4049ad 40c2fff4 [ 30.666854] ---[ end trace 32643b7195717741 ]--- The reason of this is that in __cpu_disable(), when we try to set the cpu_sibling_mask or cpu_core_mask of the sibling CPUs of the disabled one, we don't check whether the current configuration employs those sibling CPUs(hw threads). And if a CPU is not employed by a configuration, the percpu structures cpu_{sibling,core}_mask are not allocated, therefore accessing those cpumasks will result in problems as above. This patch fixes this problem by adding an addition check on whether the id is no less than nr_cpu_ids in the sibling CPU iteration code. Signed-off-by: Boqun Feng Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 25a3905..9c6f3fd 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -830,7 +830,7 @@ int __cpu_disable(void) /* Update sibling maps */ base = cpu_first_thread_sibling(cpu); - for (i = 0; i < threads_per_core; i++) { + for (i = 0; i < threads_per_core && base + i < nr_cpu_ids; i++) { cpumask_clear_cpu(cpu, cpu_sibling_mask(base + i)); cpumask_clear_cpu(base + i, cpu_sibling_mask(cpu)); cpumask_clear_cpu(cpu, cpu_core_mask(base + i)); -- cgit v0.10.2 From 66443efa83dc73775100b7442962ce2cb0d4472e Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Fri, 12 Aug 2016 21:45:52 +1000 Subject: powerpc/prom: Fix sub-processor option passed to ibm, client-architecture-support When booting from an OpenFirmware which supports it, we use the "ibm,client-architecture-support" firmware call to communicate our capabilities to firmware. The format of the structure we pass to firmware is specified in PAPR (Power Architecture Platform Requirements), or the public version LoPAPR (Linux on Power Architecture Platform Reference). Referring to table 244 in LoPAPR v1.1, option vector 5 contains a 4 byte field at bytes 17-20 for the "Platform Facilities Enable". This is followed by a 1 byte field at byte 21 for "Sub-Processor Represenation Level". Comparing to the code, there we have the Platform Facilities options (OV5_PFO_*) at byte 17, but we fail to pad that field out to its full width of 4 bytes. This means the OV5_SUB_PROCESSORS option is incorrectly placed at byte 18. Fix it by adding zero bytes for bytes 18, 19, 20, and comment the bytes to hopefully make it clearer in future. As far as I'm aware nothing actually consumes this value at this time, so the effect of this bug is nil in practice. It does mean we've been incorrectly setting bit 15 of the "Platform Facilities Enable" option for the past ~3 1/2 years, so we should avoid allocating that bit to anything else in future. Fixes: df77c7992029 ("powerpc/pseries: Update ibm,architecture.vec for PAPR 2.7/POWER8") Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 4e74fc5..d3eff99 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -695,7 +695,7 @@ unsigned char ibm_architecture_vec[] = { OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */ /* option vector 5: PAPR/OF options */ - VECTOR_LENGTH(18), /* length */ + VECTOR_LENGTH(21), /* length */ 0, /* don't ignore, don't halt */ OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) | OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) | @@ -726,8 +726,11 @@ unsigned char ibm_architecture_vec[] = { 0, 0, OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | - OV5_FEAT(OV5_PFO_HW_842), - OV5_FEAT(OV5_SUB_PROCESSORS), + OV5_FEAT(OV5_PFO_HW_842), /* Byte 17 */ + 0, /* Byte 18 */ + 0, /* Byte 19 */ + 0, /* Byte 20 */ + OV5_FEAT(OV5_SUB_PROCESSORS), /* Byte 21 */ /* option vector 6: IBM PAPR hints */ VECTOR_LENGTH(3), /* length */ -- cgit v0.10.2 From 3f3b5dc14c25254d3fe98115c71b2a1f3ed97798 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Wed, 10 Aug 2016 20:48:42 +1000 Subject: powerpc/pseries: PACA save area fix for general exception vs MCE MCE must not use PACA_EXGEN. When a general exception enables MSR_RI, that means SPRN_SRR[01] and SPRN_SPRG are no longer used. However the PACA save area is still in use. Acked-by: Mahesh Salgaonkar Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index df6d45e..034b7ea 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -969,14 +969,14 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX) machine_check_common: mfspr r10,SPRN_DAR - std r10,PACA_EXGEN+EX_DAR(r13) + std r10,PACA_EXMC+EX_DAR(r13) mfspr r10,SPRN_DSISR - stw r10,PACA_EXGEN+EX_DSISR(r13) + stw r10,PACA_EXMC+EX_DSISR(r13) EXCEPTION_PROLOG_COMMON(0x200, PACA_EXMC) FINISH_NAP RECONCILE_IRQ_STATE(r10, r11) - ld r3,PACA_EXGEN+EX_DAR(r13) - lwz r4,PACA_EXGEN+EX_DSISR(r13) + ld r3,PACA_EXMC+EX_DAR(r13) + lwz r4,PACA_EXMC+EX_DSISR(r13) std r3,_DAR(r1) std r4,_DSISR(r1) bl save_nvgprs -- cgit v0.10.2 From a74599a5041979ae83aec7a6d5c8df9131db2ce6 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Wed, 10 Aug 2016 20:48:43 +1000 Subject: powerpc/pseries: PACA save area fix for MCE vs MCE MCE must not enable MSR_RI until PACA_EXMC is no longer being used. Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 034b7ea..bffec73 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -485,7 +485,23 @@ machine_check_fwnmi: EXCEPTION_PROLOG_0(PACA_EXMC) machine_check_pSeries_0: EXCEPTION_PROLOG_1(PACA_EXMC, KVMTEST, 0x200) - EXCEPTION_PROLOG_PSERIES_1(machine_check_common, EXC_STD) + /* + * The following is essentially EXCEPTION_PROLOG_PSERIES_1 with the + * difference that MSR_RI is not enabled, because PACA_EXMC is being + * used, so nested machine check corrupts it. machine_check_common + * enables MSR_RI. + */ + ld r12,PACAKBASE(r13) + ld r10,PACAKMSR(r13) + xori r10,r10,MSR_RI + mfspr r11,SPRN_SRR0 + LOAD_HANDLER(r12, machine_check_common) + mtspr SPRN_SRR0,r12 + mfspr r12,SPRN_SRR1 + mtspr SPRN_SRR1,r10 + rfid + b . /* prevent speculative execution */ + KVM_HANDLER_SKIP(PACA_EXMC, EXC_STD, 0x200) KVM_HANDLER_SKIP(PACA_EXGEN, EXC_STD, 0x300) KVM_HANDLER_SKIP(PACA_EXSLB, EXC_STD, 0x380) @@ -977,6 +993,9 @@ machine_check_common: RECONCILE_IRQ_STATE(r10, r11) ld r3,PACA_EXMC+EX_DAR(r13) lwz r4,PACA_EXMC+EX_DSISR(r13) + /* Enable MSR_RI when finished with PACA_EXMC */ + li r10,MSR_RI + mtmsrd r10,1 std r3,_DAR(r1) std r4,_DSISR(r1) bl save_nvgprs -- cgit v0.10.2 From 41017a7579cf49cb5513e17df1570dc918760079 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 11 Aug 2016 10:50:40 +0200 Subject: powerpc: sysdev: cpm: fix gpio save_regs functions of_mm_gpiochip_add_data() calls mm_gc->save_regs() before setting the data. Therefore ->save_regs() cannot use gpiochip_get_data() [ 0.275940] Unable to handle kernel paging request for data at address 0x00000130 [ 0.283120] Faulting instruction address: 0xc01b44cc [ 0.288175] Oops: Kernel access of bad area, sig: 11 [#1] [ 0.293343] PREEMPT CMPC885 [ 0.296141] CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-g65124df-dirty #68 [ 0.304131] task: c6074000 ti: c6080000 task.ti: c6080000 [ 0.309459] NIP: c01b44cc LR: c0011720 CTR: c0011708 [ 0.314372] REGS: c6081d90 TRAP: 0300 Not tainted (4.7.0-g65124df-dirty) [ 0.322267] MSR: 00009032 CR: 24000028 XER: 20000000 [ 0.328813] DAR: 00000130 DSISR: c0000000 GPR00: c01b6d0c c6081e40 c6074000 c6017000 c9028000 c601d028 c6081dd8 00000000 GPR08: c601d028 00000000 ffffffff 00000001 24000044 00000000 c0002790 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 c05643b0 00000083 GPR24: c04a1a6c c0560000 c04a8308 c04c6480 c0012498 c6017000 c7ffcc78 c6017000 [ 0.360806] NIP [c01b44cc] gpiochip_get_data+0x4/0xc [ 0.365684] LR [c0011720] cpm1_gpio16_save_regs+0x18/0x44 [ 0.370972] Call Trace: [ 0.373451] [c6081e50] [c01b6d0c] of_mm_gpiochip_add_data+0x70/0xdc [ 0.379624] [c6081e70] [c00124c0] cpm_init_par_io+0x28/0x118 [ 0.385238] [c6081e80] [c04a8ac0] do_one_initcall+0xb0/0x17c [ 0.390819] [c6081ef0] [c04a8cbc] kernel_init_freeable+0x130/0x1dc [ 0.396924] [c6081f30] [c00027a4] kernel_init+0x14/0x110 [ 0.402177] [c6081f40] [c000b424] ret_from_kernel_thread+0x5c/0x64 [ 0.408233] Instruction dump: [ 0.411168] 4182fafc 3f80c040 48234c6d 3bc0fff0 3b9c5ed0 4bfffaf4 81290020 712a0004 [ 0.418825] 4182fb34 48234c51 4bfffb2c 81230004 <80690130> 4e800020 7c0802a6 9421ffe0 [ 0.426763] ---[ end trace fe4113ee21d72ffa ]--- fixes: e65078f1f3490 ("powerpc: sysdev: cpm1: use gpiochip data pointer") fixes: a14a2d484b386 ("powerpc: cpm_common: use gpiochip data pointer") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy Reviewed-by: Linus Walleij Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c index 6c11099..81d4947 100644 --- a/arch/powerpc/sysdev/cpm1.c +++ b/arch/powerpc/sysdev/cpm1.c @@ -534,7 +534,8 @@ struct cpm1_gpio16_chip { static void cpm1_gpio16_save_regs(struct of_mm_gpio_chip *mm_gc) { - struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc); + struct cpm1_gpio16_chip *cpm1_gc = + container_of(mm_gc, struct cpm1_gpio16_chip, mm_gc); struct cpm_ioport16 __iomem *iop = mm_gc->regs; cpm1_gc->cpdata = in_be16(&iop->dat); @@ -649,7 +650,8 @@ struct cpm1_gpio32_chip { static void cpm1_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc) { - struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc); + struct cpm1_gpio32_chip *cpm1_gc = + container_of(mm_gc, struct cpm1_gpio32_chip, mm_gc); struct cpm_ioport32b __iomem *iop = mm_gc->regs; cpm1_gc->cpdata = in_be32(&iop->dat); diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index 911456d..947f420 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -94,7 +94,8 @@ struct cpm2_gpio32_chip { static void cpm2_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc) { - struct cpm2_gpio32_chip *cpm2_gc = gpiochip_get_data(&mm_gc->gc); + struct cpm2_gpio32_chip *cpm2_gc = + container_of(mm_gc, struct cpm2_gpio32_chip, mm_gc); struct cpm2_ioports __iomem *iop = mm_gc->regs; cpm2_gc->cpdata = in_be32(&iop->dat); -- cgit v0.10.2 From 7c379526d7e71d2041c8ca0bd9af4888916a14b9 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 11 Aug 2016 15:07:43 +0200 Subject: powerpc: move hmi.c to arch/powerpc/kvm/ hmi.c functions are unused unless sibling_subcore_state is nonzero, and that in turn happens only if KVM is in use. So move the code to arch/powerpc/kvm/, putting it under CONFIG_KVM_BOOK3S_HV_POSSIBLE rather than CONFIG_PPC_BOOK3S_64. The sibling_subcore_state is also included in struct paca_struct only if KVM is supported by the kernel. Cc: Daniel Axtens Cc: Michael Ellerman Cc: Mahesh Salgaonkar Cc: Paul Mackerras Cc: linuxppc-dev@lists.ozlabs.org Cc: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/include/asm/hmi.h b/arch/powerpc/include/asm/hmi.h index 88b4901..85b7a1a 100644 --- a/arch/powerpc/include/asm/hmi.h +++ b/arch/powerpc/include/asm/hmi.h @@ -21,7 +21,7 @@ #ifndef __ASM_PPC64_HMI_H__ #define __ASM_PPC64_HMI_H__ -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE #define CORE_TB_RESYNC_REQ_BIT 63 #define MAX_SUBCORE_PER_CORE 4 diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 148303e7..6a6792b 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -183,11 +183,6 @@ struct paca_struct { */ u16 in_mce; u8 hmi_event_available; /* HMI event is available */ - /* - * Bitmap for sibling subcore status. See kvm/book3s_hv_ras.c for - * more details - */ - struct sibling_subcore_state *sibling_subcore_state; #endif /* Stuff for accurate time accounting */ @@ -202,6 +197,13 @@ struct paca_struct { struct kvmppc_book3s_shadow_vcpu shadow_vcpu; #endif struct kvmppc_host_state kvm_hstate; +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE + /* + * Bitmap for sibling subcore status. See kvm/book3s_hv_ras.c for + * more details + */ + struct sibling_subcore_state *sibling_subcore_state; +#endif #endif }; diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index b2027a5..fe4c075 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -41,7 +41,7 @@ obj-$(CONFIG_VDSO32) += vdso32/ obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_ppc970.o cpu_setup_pa6t.o obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o -obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o hmi.o +obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_book3e.o obj-$(CONFIG_PPC64) += vdso64/ obj-$(CONFIG_ALTIVEC) += vecemu.o diff --git a/arch/powerpc/kernel/hmi.c b/arch/powerpc/kernel/hmi.c deleted file mode 100644 index e3f738e..0000000 --- a/arch/powerpc/kernel/hmi.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Hypervisor Maintenance Interrupt (HMI) handling. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. - * - * Copyright 2015 IBM Corporation - * Author: Mahesh Salgaonkar - */ - -#undef DEBUG - -#include -#include -#include -#include - -void wait_for_subcore_guest_exit(void) -{ - int i; - - /* - * NULL bitmap pointer indicates that KVM module hasn't - * been loaded yet and hence no guests are running. - * If no KVM is in use, no need to co-ordinate among threads - * as all of them will always be in host and no one is going - * to modify TB other than the opal hmi handler. - * Hence, just return from here. - */ - if (!local_paca->sibling_subcore_state) - return; - - for (i = 0; i < MAX_SUBCORE_PER_CORE; i++) - while (local_paca->sibling_subcore_state->in_guest[i]) - cpu_relax(); -} - -void wait_for_tb_resync(void) -{ - if (!local_paca->sibling_subcore_state) - return; - - while (test_bit(CORE_TB_RESYNC_REQ_BIT, - &local_paca->sibling_subcore_state->flags)) - cpu_relax(); -} diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 1f9e552..855d4b9 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -78,6 +78,7 @@ kvm-book3s_64-builtin-xics-objs-$(CONFIG_KVM_XICS) := \ ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HANDLER) += \ + book3s_hv_hmi.o \ book3s_hv_rmhandlers.o \ book3s_hv_rm_mmu.o \ book3s_hv_ras.o \ diff --git a/arch/powerpc/kvm/book3s_hv_hmi.c b/arch/powerpc/kvm/book3s_hv_hmi.c new file mode 100644 index 0000000..e3f738e --- /dev/null +++ b/arch/powerpc/kvm/book3s_hv_hmi.c @@ -0,0 +1,56 @@ +/* + * Hypervisor Maintenance Interrupt (HMI) handling. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. + * + * Copyright 2015 IBM Corporation + * Author: Mahesh Salgaonkar + */ + +#undef DEBUG + +#include +#include +#include +#include + +void wait_for_subcore_guest_exit(void) +{ + int i; + + /* + * NULL bitmap pointer indicates that KVM module hasn't + * been loaded yet and hence no guests are running. + * If no KVM is in use, no need to co-ordinate among threads + * as all of them will always be in host and no one is going + * to modify TB other than the opal hmi handler. + * Hence, just return from here. + */ + if (!local_paca->sibling_subcore_state) + return; + + for (i = 0; i < MAX_SUBCORE_PER_CORE; i++) + while (local_paca->sibling_subcore_state->in_guest[i]) + cpu_relax(); +} + +void wait_for_tb_resync(void) +{ + if (!local_paca->sibling_subcore_state) + return; + + while (test_bit(CORE_TB_RESYNC_REQ_BIT, + &local_paca->sibling_subcore_state->flags)) + cpu_relax(); +} -- cgit v0.10.2 From 6f00975c619064a18c23fd3aced325ae165a73b9 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sat, 20 Aug 2016 12:22:11 +0200 Subject: drm: Reject page_flip for !DRIVER_MODESET Somehow this one slipped through, which means drivers without modeset support can be oopsed (since those also don't call drm_mode_config_init, which means the crtc lookup will chase an uninitalized idr). Reported-by: Alexander Potapenko Cc: Alexander Potapenko Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter Reviewed-by: Chris Wilson Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index b1dbb60..ddebe54 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -5404,6 +5404,9 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, struct drm_pending_vblank_event *e = NULL; int ret = -EINVAL; + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || page_flip->reserved != 0) return -EINVAL; -- cgit v0.10.2 From 11d7a0bb95eaaba1741bb24a7c3c169c82f09c7b Mon Sep 17 00:00:00 2001 From: David Ahern Date: Sun, 14 Aug 2016 19:52:56 -0700 Subject: xfrm: Only add l3mdev oif to dst lookups Subash reported that commit 42a7b32b73d6 ("xfrm: Add oif to dst lookups") broke a wifi use case that uses fib rules and xfrms. The intent of 42a7b32b73d6 was driven by VRFs with IPsec. As a compromise relax the use of oif in xfrm lookups to L3 master devices only (ie., oif is either an L3 master device or is enslaved to a master device). Fixes: 42a7b32b73d6 ("xfrm: Add oif to dst lookups") Reported-by: Subash Abhinov Kasiviswanathan Signed-off-by: David Ahern Signed-off-by: Steffen Klassert diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c index 7b0edb3..e07ed8b 100644 --- a/net/ipv4/xfrm4_policy.c +++ b/net/ipv4/xfrm4_policy.c @@ -29,7 +29,7 @@ static struct dst_entry *__xfrm4_dst_lookup(struct net *net, struct flowi4 *fl4, memset(fl4, 0, sizeof(*fl4)); fl4->daddr = daddr->a4; fl4->flowi4_tos = tos; - fl4->flowi4_oif = oif; + fl4->flowi4_oif = l3mdev_master_ifindex_by_index(net, oif); if (saddr) fl4->saddr = saddr->a4; diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index c074771..dd84ecd 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -36,7 +36,7 @@ static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos, int oif, int err; memset(&fl6, 0, sizeof(fl6)); - fl6.flowi6_oif = oif; + fl6.flowi6_oif = l3mdev_master_ifindex_by_index(net, oif); fl6.flowi6_flags = FLOWI_FLAG_SKIP_NH_OIF; memcpy(&fl6.daddr, daddr, sizeof(fl6.daddr)); if (saddr) -- cgit v0.10.2 From 93e11eb1b745ee8dbd4f98f24b542d496c8f1e03 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 10 Aug 2016 13:44:56 +0000 Subject: dmaengine: fsl_raid: add missing of_node_put() in fsl_re_probe() When terminating for_each_compatible_node() iteration with break or return, of_node_put() should be used to prevent stale device node references from being left behind. Found by Coccinelle. Signed-off-by: Wei Yongjun Signed-off-by: Vinod Koul diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c index aad167e..de2a2a2 100644 --- a/drivers/dma/fsl_raid.c +++ b/drivers/dma/fsl_raid.c @@ -836,6 +836,7 @@ static int fsl_re_probe(struct platform_device *ofdev) rc = of_property_read_u32(np, "reg", &off); if (rc) { dev_err(dev, "Reg property not found in JQ node\n"); + of_node_put(np); return -ENODEV; } /* Find out the Job Rings present under each JQ */ -- cgit v0.10.2 From 6a8b0c6b18f62a277ffb2139d0c0253fe35d7feb Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 10 Aug 2016 03:17:09 +0000 Subject: dmaengine: at_xdmac: fix to pass correct device identity to free_irq() free_irq() expects the same device identity that was passed to corresponding request_irq(), otherwise the IRQ is not freed. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Wei Yongjun Acked-by: Ludovic Desroches Signed-off-by: Vinod Koul diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index e434ffe..832cbd6 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -2067,7 +2067,7 @@ err_dma_unregister: err_clk_disable: clk_disable_unprepare(atxdmac->clk); err_free_irq: - free_irq(atxdmac->irq, atxdmac->dma.dev); + free_irq(atxdmac->irq, atxdmac); return ret; } @@ -2081,7 +2081,7 @@ static int at_xdmac_remove(struct platform_device *pdev) dma_async_device_unregister(&atxdmac->dma); clk_disable_unprepare(atxdmac->clk); - free_irq(atxdmac->irq, atxdmac->dma.dev); + free_irq(atxdmac->irq, atxdmac); for (i = 0; i < atxdmac->dma.chancnt; i++) { struct at_xdmac_chan *atchan = &atxdmac->chan[i]; -- cgit v0.10.2 From 32e80820de5d7eb778632af8f235727a32d3aeb2 Mon Sep 17 00:00:00 2001 From: LABBE Corentin Date: Tue, 16 Aug 2016 10:44:18 +0200 Subject: dmaengine: img-mdc: fix a possible NULL dereference of_match_device could return NULL, and so cause a NULL pointer dereference later at line 850: mdma->soc = match->data; For fixing this problem, we use of_device_get_match_data(), this will simplify the code a little by using a standard function for getting the match data. This was reported by coverity (CID 1324134) Signed-off-by: LABBE Corentin Signed-off-by: Vinod Koul diff --git a/drivers/dma/img-mdc-dma.c b/drivers/dma/img-mdc-dma.c index a4c53be..624f1e1 100644 --- a/drivers/dma/img-mdc-dma.c +++ b/drivers/dma/img-mdc-dma.c @@ -861,7 +861,6 @@ static int mdc_dma_probe(struct platform_device *pdev) { struct mdc_dma *mdma; struct resource *res; - const struct of_device_id *match; unsigned int i; u32 val; int ret; @@ -871,8 +870,7 @@ static int mdc_dma_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, mdma); - match = of_match_device(mdc_dma_of_match, &pdev->dev); - mdma->soc = match->data; + mdma->soc = of_device_get_match_data(&pdev->dev); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); mdma->regs = devm_ioremap_resource(&pdev->dev, res); -- cgit v0.10.2 From f6c274e11e3b31a5f95c23962b1ba593bd6a4759 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 28 Jul 2016 10:16:12 +0300 Subject: usb: dwc3: pci: runtime_resume child device During runtime_resume of dwc3-pci.c, we need to runtime suspend our child device (which is dwc3 proper) otherwise nothing will happen. Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 2eb84d6..0a32430 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -243,6 +243,13 @@ static int dwc3_pci_runtime_suspend(struct device *dev) return -EBUSY; } +static int dwc3_pci_runtime_resume(struct device *dev) +{ + struct platform_device *dwc3 = dev_get_drvdata(dev); + + return pm_runtime_get(&dwc3->dev); +} + static int dwc3_pci_pm_dummy(struct device *dev) { /* @@ -259,7 +266,7 @@ static int dwc3_pci_pm_dummy(struct device *dev) static struct dev_pm_ops dwc3_pci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_pm_dummy, dwc3_pci_pm_dummy) - SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_pm_dummy, + SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume, NULL) }; -- cgit v0.10.2 From b74c2d875baaa07186f617c5617f4c5e3a8a41ad Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 28 Jul 2016 13:07:07 +0300 Subject: usb: dwc3: core: allow device to runtime_suspend several times After going through runtime_suspend/runtime_resume cycle once we would be left with an unbalanced pm_runtime_get() call. Fix that by making sure that we try to suspend right after resuming so things are balanced and device can runtime_suspend again. Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 9466431..35d0924 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1192,6 +1192,7 @@ static int dwc3_runtime_resume(struct device *dev) } pm_runtime_mark_last_busy(dev); + pm_runtime_put(dev); return 0; } -- cgit v0.10.2 From 83f8da562f8b5275fa1095b45762996971f7c607 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Wed, 10 Aug 2016 08:53:34 -0500 Subject: usb: dwc2: Add reset control to dwc2 Allow for platforms that have a reset controller driver in place to bring the USB IP out of reset. Signed-off-by: Dinh Nguyen Acked-by: John Youn Tested-by: Stefan Wahren Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 9fae029..d645512 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -868,6 +868,7 @@ struct dwc2_hsotg { void *priv; int irq; struct clk *clk; + struct reset_control *reset; unsigned int queuing_high_bandwidth:1; unsigned int srp_success:1; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index fc6f525..530959a 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -45,6 +45,7 @@ #include #include #include +#include #include @@ -337,6 +338,24 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg) { int i, ret; + hsotg->reset = devm_reset_control_get_optional(hsotg->dev, "dwc2"); + if (IS_ERR(hsotg->reset)) { + ret = PTR_ERR(hsotg->reset); + switch (ret) { + case -ENOENT: + case -ENOTSUPP: + hsotg->reset = NULL; + break; + default: + dev_err(hsotg->dev, "error getting reset control %d\n", + ret); + return ret; + } + } + + if (hsotg->reset) + reset_control_deassert(hsotg->reset); + /* Set default UTMI width */ hsotg->phyif = GUSBCFG_PHYIF16; @@ -434,6 +453,9 @@ static int dwc2_driver_remove(struct platform_device *dev) if (hsotg->ll_hw_enabled) dwc2_lowlevel_hw_disable(hsotg); + if (hsotg->reset) + reset_control_assert(hsotg->reset); + return 0; } -- cgit v0.10.2 From 3295235fd70ed6d594aadee8c892a14f6a4b2d2e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sat, 13 Aug 2016 01:28:24 +0000 Subject: usb: renesas_usbhs: gadget: fix return value check in usbhs_mod_gadget_probe() In case of error, the function usb_get_phy() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: b5a2875605ca ("usb: renesas_usbhs: Allow an OTG PHY driver to provide VBUS") Cc: # v4.3+ Acked-by: Yoshihiro Shimoda Signed-off-by: Wei Yongjun Signed-off-by: Felipe Balbi diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 92bc83b..c4c6474 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -1076,7 +1076,7 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv) gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED); dev_info(dev, "%stransceiver found\n", - gpriv->transceiver ? "" : "no "); + !IS_ERR(gpriv->transceiver) ? "" : "no "); /* * CAUTION -- cgit v0.10.2 From 70237dc8efd092b93b40dc2eba812d66a5d65cb1 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Thu, 11 Aug 2016 15:51:45 +0800 Subject: usb: gadget: function: f_eem: socket buffer may be NULL In eth_start_xmit, the socket buffer may be NULL. So, add NULL pointer check at .wrap API. Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/function/f_eem.c b/drivers/usb/gadget/function/f_eem.c index d58bfc3..8741fd7 100644 --- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -341,11 +341,15 @@ static struct sk_buff *eem_wrap(struct gether *port, struct sk_buff *skb) { struct sk_buff *skb2 = NULL; struct usb_ep *in = port->in_ep; - int padlen = 0; + int headroom, tailroom, padlen = 0; u16 len = skb->len; - int headroom = skb_headroom(skb); - int tailroom = skb_tailroom(skb); + if (!skb) + return NULL; + + len = skb->len; + headroom = skb_headroom(skb); + tailroom = skb_tailroom(skb); /* When (len + EEM_HLEN + ETH_FCS_LEN) % in->maxpacket) is 0, * stick two bytes of zero-length EEM packet on the end. -- cgit v0.10.2 From 80d1642d7640ef00d8823f17a529785331aceb96 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Thu, 11 Aug 2016 15:51:46 +0800 Subject: usb: gadget: function: f_rndis: socket buffer may be NULL In eth_start_xmit, the socket buffer may be NULL. So, add NULL pointer check at .wrap API. Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c index c800582..16562e4 100644 --- a/drivers/usb/gadget/function/f_rndis.c +++ b/drivers/usb/gadget/function/f_rndis.c @@ -374,6 +374,9 @@ static struct sk_buff *rndis_add_header(struct gether *port, { struct sk_buff *skb2; + if (!skb) + return NULL; + skb2 = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type)); rndis_add_hdr(skb2); -- cgit v0.10.2 From f4693b08cc901912a87369c46537b94ed4084ea0 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 15 Jul 2016 14:15:47 +0300 Subject: usb: gadget: fsl_qe_udc: signedness bug in qe_get_frame() We can't assign -EINVAL to a u16. Fixes: 3948f0e0c999 ('usb: add Freescale QE/CPM USB peripheral controller driver') Acked-by: Peter Chen Signed-off-by: Dan Carpenter Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index cf8819a..8bb011e 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -1878,11 +1878,8 @@ static int qe_get_frame(struct usb_gadget *gadget) tmp = in_be16(&udc->usb_param->frame_n); if (tmp & 0x8000) - tmp = tmp & 0x07ff; - else - tmp = -EINVAL; - - return (int)tmp; + return tmp & 0x07ff; + return -EINVAL; } static int fsl_qe_start(struct usb_gadget *gadget, -- cgit v0.10.2 From d6011f6fc21b4d4ab1586f01c4f62becaa0a28d7 Mon Sep 17 00:00:00 2001 From: Nicolas Saenz Julienne Date: Tue, 16 Aug 2016 10:22:38 +0100 Subject: usb: dwc3: gadget: don't rely on jiffies while holding spinlock __dwc3_gadget_wakeup() is called while holding a spinlock, then depends on jiffies in order to timeout while polling the USB core for a link state update. In the case the wakeup failed, the timeout will never happen and will also cause the cpu to stall until rcu_preempt kicks in. This switches to a "decrement variable and wait" timeout scheme. Signed-off-by: Nicolas Saenz Julienne Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1f5597e..122e64d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1433,7 +1433,7 @@ static int dwc3_gadget_get_frame(struct usb_gadget *g) static int __dwc3_gadget_wakeup(struct dwc3 *dwc) { - unsigned long timeout; + int retries; int ret; u32 reg; @@ -1484,9 +1484,9 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc) } /* poll until Link State changes to ON */ - timeout = jiffies + msecs_to_jiffies(100); + retries = 20000; - while (!time_after(jiffies, timeout)) { + while (retries--) { reg = dwc3_readl(dwc->regs, DWC3_DSTS); /* in HS, means ON */ -- cgit v0.10.2 From 511a36d2f357724312bb3776d2f6eed3890928b2 Mon Sep 17 00:00:00 2001 From: Baolin Wang Date: Thu, 30 Jun 2016 17:10:23 +0800 Subject: usb: gadget: Add the gserial port checking in gs_start_tx() When usb gadget is set gadget serial function, it will be crash in below situation. It will clean the 'port->port_usb' pointer in gserial_disconnect() function when usb link is inactive, but it will release lock for disabling the endpoints in this function. Druing the lock release period, it maybe complete one request to issue gs_write_complete()--->gs_start_tx() function, but the 'port->port_usb' pointer had been set NULL, thus it will be crash in gs_start_tx() function. This patch adds the 'port->port_usb' pointer checking in gs_start_tx() function to avoid this situation. Signed-off-by: Baolin Wang Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 6ded634..e0cd1e4 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -375,10 +375,15 @@ __acquires(&port->port_lock) */ { struct list_head *pool = &port->write_pool; - struct usb_ep *in = port->port_usb->in; + struct usb_ep *in; int status = 0; bool do_tty_wake = false; + if (!port->port_usb) + return status; + + in = port->port_usb->in; + while (!port->write_busy && !list_empty(pool)) { struct usb_request *req; int len; -- cgit v0.10.2 From 4396f46c8c628329bd35ee4b84140b8b001a11eb Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Mon, 22 Aug 2016 16:21:52 +0800 Subject: genirq: Fix potential memleak when failing to get irq pm Obviously we should free action here if irq_chip_pm_get failed. Fixes: be45beb2df69: "genirq: Add runtime power management support for IRQ chips" Signed-off-by: Shawn Lin Cc: Jon Hunter Cc: Marc Zyngier Link: http://lkml.kernel.org/r/1471854112-13006-1-git-send-email-shawn.lin@rock-chips.com Signed-off-by: Thomas Gleixner diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 73a2b78..9530fcd 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1681,8 +1681,10 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler, action->dev_id = dev_id; retval = irq_chip_pm_get(&desc->irq_data); - if (retval < 0) + if (retval < 0) { + kfree(action); return retval; + } chip_bus_lock(desc); retval = __setup_irq(irq, desc, action); @@ -1985,8 +1987,10 @@ int request_percpu_irq(unsigned int irq, irq_handler_t handler, action->percpu_dev_id = dev_id; retval = irq_chip_pm_get(&desc->irq_data); - if (retval < 0) + if (retval < 0) { + kfree(action); return retval; + } chip_bus_lock(desc); retval = __setup_irq(irq, desc, action); -- cgit v0.10.2 From 3ee0ce2a54dff07d09440723594df89bc1a12e79 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 11 Aug 2016 07:06:45 -0700 Subject: genirq/affinity: Use get/put_online_cpus around cpumask operations Without locking out CPU mask operations we might end up with an inconsistent view of the cpumask in the function. Fixes: 5e385a6ef31f: "genirq: Add a helper to spread an affinity mask for MSI/MSI-X vectors" Signed-off-by: Christoph Hellwig Link: http://lkml.kernel.org/r/1470924405-25728-1-git-send-email-hch@lst.de Signed-off-by: Thomas Gleixner diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c index f689593..32f6cfc 100644 --- a/kernel/irq/affinity.c +++ b/kernel/irq/affinity.c @@ -39,6 +39,7 @@ struct cpumask *irq_create_affinity_mask(unsigned int *nr_vecs) return NULL; } + get_online_cpus(); if (max_vecs >= num_online_cpus()) { cpumask_copy(affinity_mask, cpu_online_mask); *nr_vecs = num_online_cpus(); @@ -56,6 +57,7 @@ struct cpumask *irq_create_affinity_mask(unsigned int *nr_vecs) } *nr_vecs = vecs; } + put_online_cpus(); return affinity_mask; } -- cgit v0.10.2 From 7e4379eae0e31994ea645db1d13006ea8e5ce539 Mon Sep 17 00:00:00 2001 From: Andrej Krutak Date: Thu, 18 Aug 2016 23:52:10 +0200 Subject: ALSA: line6: Remove double line6_pcm_release() after failed acquire. If there's an error, pcm is released in line6_pcm_acquire already. Fixes: 247d95ee6dd2 ('ALSA: line6: Handle error from line6_pcm_acquire()') Cc: # v4.0+ Reviewed-by: Stefan Hajnoczi Signed-off-by: Andrej Krutak Signed-off-by: Takashi Iwai diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index 204cc07..2bc8879 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -55,7 +55,6 @@ static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol, err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE); if (err < 0) { line6pcm->impulse_volume = 0; - line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE); return err; } } else { -- cgit v0.10.2 From adc8a43a6d6688272ebffa81789fa857e603dec6 Mon Sep 17 00:00:00 2001 From: Andrej Krutak Date: Thu, 18 Aug 2016 23:52:11 +0200 Subject: ALSA: line6: Give up on the lock while URBs are released. Done, because line6_stream_stop() locks and calls line6_unlink_audio_urbs(), which in turn invokes audio_out_callback(), which tries to lock 2nd time. Fixes: ============================================= [ INFO: possible recursive locking detected ] 4.4.15+ #15 Not tainted --------------------------------------------- mplayer/3591 is trying to acquire lock: (&(&line6pcm->out.lock)->rlock){-.-...}, at: [] audio_out_callback+0x70/0x110 [snd_usb_line6] but task is already holding lock: (&(&line6pcm->out.lock)->rlock){-.-...}, at: [] line6_stream_stop+0x24/0x5c [snd_usb_line6] other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&line6pcm->out.lock)->rlock); lock(&(&line6pcm->out.lock)->rlock); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by mplayer/3591: #0: (snd_pcm_link_rwlock){.-.-..}, at: [] snd_pcm_stream_lock+0x1e/0x40 [snd_pcm] #1: (&(&substream->self_group.lock)->rlock){-.-...}, at: [] snd_pcm_stream_lock+0x26/0x40 [snd_pcm] #2: (&(&line6pcm->out.lock)->rlock){-.-...}, at: [] line6_stream_stop+0x24/0x5c [snd_usb_line6] stack backtrace: CPU: 0 PID: 3591 Comm: mplayer Not tainted 4.4.15+ #15 Hardware name: Generic AM33XX (Flattened Device Tree) [] (unwind_backtrace) from [] (show_stack+0x11/0x14) [] (show_stack) from [] (dump_stack+0x8b/0xac) [] (dump_stack) from [] (__lock_acquire+0xc8b/0x1780) [] (__lock_acquire) from [] (lock_acquire+0x99/0x1c0) [] (lock_acquire) from [] (_raw_spin_lock_irqsave+0x3f/0x4c) [] (_raw_spin_lock_irqsave) from [] (audio_out_callback+0x70/0x110 [snd_usb_line6]) [] (audio_out_callback [snd_usb_line6]) from [] (__usb_hcd_giveback_urb+0x53/0xd0) [] (__usb_hcd_giveback_urb) from [] (musb_giveback+0x3d/0x98) [] (musb_giveback) from [] (musb_urb_dequeue+0x6d/0x114) [] (musb_urb_dequeue) from [] (usb_hcd_unlink_urb+0x39/0x98) [] (usb_hcd_unlink_urb) from [] (line6_unlink_audio_urbs+0x6a/0x6c [snd_usb_line6]) [] (line6_unlink_audio_urbs [snd_usb_line6]) from [] (line6_stream_stop+0x42/0x5c [snd_usb_line6]) [] (line6_stream_stop [snd_usb_line6]) from [] (snd_line6_trigger+0xb6/0xf4 [snd_usb_line6]) [] (snd_line6_trigger [snd_usb_line6]) from [] (snd_pcm_do_stop+0x36/0x38 [snd_pcm]) [] (snd_pcm_do_stop [snd_pcm]) from [] (snd_pcm_action_single+0x22/0x40 [snd_pcm]) [] (snd_pcm_action_single [snd_pcm]) from [] (snd_pcm_action+0xac/0xb0 [snd_pcm]) [] (snd_pcm_action [snd_pcm]) from [] (snd_pcm_drop+0x38/0x64 [snd_pcm]) [] (snd_pcm_drop [snd_pcm]) from [] (snd_pcm_common_ioctl1+0x7fe/0xbe8 [snd_pcm]) [] (snd_pcm_common_ioctl1 [snd_pcm]) from [] (snd_pcm_playback_ioctl1+0x15c/0x51c [snd_pcm]) [] (snd_pcm_playback_ioctl1 [snd_pcm]) from [] (snd_pcm_playback_ioctl+0x20/0x28 [snd_pcm]) [] (snd_pcm_playback_ioctl [snd_pcm]) from [] (do_vfs_ioctl+0x3af/0x5c8) Fixes: 63e20df1e5b2 ('ALSA: line6: Reorganize PCM stream handling') Cc: # v4.0+ Reviewed-by: Stefan Hajnoczi Signed-off-by: Andrej Krutak Signed-off-by: Takashi Iwai diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index 2bc8879..41aa335 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -210,7 +210,9 @@ static void line6_stream_stop(struct snd_line6_pcm *line6pcm, int direction, spin_lock_irqsave(&pstr->lock, flags); clear_bit(type, &pstr->running); if (!pstr->running) { + spin_unlock_irqrestore(&pstr->lock, flags); line6_unlink_audio_urbs(line6pcm, pstr); + spin_lock_irqsave(&pstr->lock, flags); if (direction == SNDRV_PCM_STREAM_CAPTURE) { line6pcm->prev_fbuf = NULL; line6pcm->prev_fsize = 0; -- cgit v0.10.2 From b027d11263836a0cd335520175257dcb99b43757 Mon Sep 17 00:00:00 2001 From: Andrej Krutak Date: Thu, 18 Aug 2016 23:52:12 +0200 Subject: ALSA: line6: Fix POD sysfs attributes segfault The commit 02fc76f6a changed base of the sysfs attributes from device to card. The "show" callbacks dereferenced wrong objects because of this. Fixes: 02fc76f6a7db ('ALSA: line6: Create sysfs via snd_card_add_dev_attr()') Cc: # v4.0+ Reviewed-by: Stefan Hajnoczi Signed-off-by: Andrej Krutak Signed-off-by: Takashi Iwai diff --git a/sound/usb/line6/pod.c b/sound/usb/line6/pod.c index daf81d1..45dd348 100644 --- a/sound/usb/line6/pod.c +++ b/sound/usb/line6/pod.c @@ -244,8 +244,8 @@ static int pod_set_system_param_int(struct usb_line6_pod *pod, int value, static ssize_t serial_number_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct usb_interface *interface = to_usb_interface(dev); - struct usb_line6_pod *pod = usb_get_intfdata(interface); + struct snd_card *card = dev_to_snd_card(dev); + struct usb_line6_pod *pod = card->private_data; return sprintf(buf, "%u\n", pod->serial_number); } @@ -256,8 +256,8 @@ static ssize_t serial_number_show(struct device *dev, static ssize_t firmware_version_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct usb_interface *interface = to_usb_interface(dev); - struct usb_line6_pod *pod = usb_get_intfdata(interface); + struct snd_card *card = dev_to_snd_card(dev); + struct usb_line6_pod *pod = card->private_data; return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100, pod->firmware_version % 100); @@ -269,8 +269,8 @@ static ssize_t firmware_version_show(struct device *dev, static ssize_t device_id_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct usb_interface *interface = to_usb_interface(dev); - struct usb_line6_pod *pod = usb_get_intfdata(interface); + struct snd_card *card = dev_to_snd_card(dev); + struct usb_line6_pod *pod = card->private_data; return sprintf(buf, "%d\n", pod->device_id); } -- cgit v0.10.2 From f4750a46a0dee58f7a65b438b28a092669b609aa Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Fri, 17 Jun 2016 13:42:18 -0700 Subject: drm/i915/gen9: Initialize intel_state->active_crtcs during WM sanitization (v2) intel_state->active_crtcs is usually only initialized when doing a modeset. During our first atomic commit after boot, we're effectively faking a modeset to sanitize the DDB/wm setup, so ensure that this field gets initialized before use. v2: - Don't clobber active_crtcs if our first commit really is a modeset (Maarten) - Grab connection_mutex when faking a modeset during sanitization (Maarten) Reported-by: Tvrtko Ursulin Cc: Tvrtko Ursulin Cc: Maarten Lankhorst Signed-off-by: Matt Roper Tested-by: Tvrtko Ursulin Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1466196140-16336-2-git-send-email-matthew.d.roper@intel.com Cc: stable@vger.kernel.org #v4.7+ (cherry picked from commit 1b54a880b250acc226b13cea221b90aa1b3e37dd) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index d5deb58..e9763a8 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3912,9 +3912,24 @@ skl_compute_ddb(struct drm_atomic_state *state) * pretend that all pipes switched active status so that we'll * ensure a full DDB recompute. */ - if (dev_priv->wm.distrust_bios_wm) + if (dev_priv->wm.distrust_bios_wm) { + ret = drm_modeset_lock(&dev->mode_config.connection_mutex, + state->acquire_ctx); + if (ret) + return ret; + intel_state->active_pipe_changes = ~0; + /* + * We usually only initialize intel_state->active_crtcs if we + * we're doing a modeset; make sure this field is always + * initialized during the sanitization process that happens + * on the first commit too. + */ + if (!intel_state->modeset) + intel_state->active_crtcs = dev_priv->active_crtcs; + } + /* * If the modeset changes which CRTC's are active, we need to * recompute the DDB allocation for *all* active pipes, even -- cgit v0.10.2 From c7aca235aa60d1432c95b752812d359d0dbece4f Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Fri, 17 Jun 2016 13:42:20 -0700 Subject: drm/i915/gen9: Drop invalid WARN() during data rate calculation It's possible to have a non-zero plane mask and still wind up with a total data rate of zero. There are two cases where this can happen: * planes are active (from the KMS point of view), but are all fully clipped (positioned offscreen) * the only active plane on a CRTC is the cursor (which is handled independently and not counted into the general data rate computations These are both valid display setups (although unusual), so we need to drop the WARN(). Signed-off-by: Matt Roper Reviewed-by: Maarten Lankhorst Testcase: kms_universal_planes.cursor-only-pipe-* Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1466196140-16336-4-git-send-email-matthew.d.roper@intel.com Cc: stable@vger.kernel.org #v4.7+ (cherry picked from commit 43aa7e87507f519b0b2497b6fac1e894554eaef2) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index e9763a8..421c5b7 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3107,8 +3107,6 @@ skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate) total_data_rate += intel_cstate->wm.skl.plane_y_data_rate[id]; } - WARN_ON(cstate->plane_mask && total_data_rate == 0); - return total_data_rate; } -- cgit v0.10.2 From dcd79934b0dd803fdb29216fbd6f4a899a66f466 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 18 Aug 2016 17:16:40 +0100 Subject: drm/i915: Unconditionally flush any chipset buffers before execbuf MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If userspace is asynchronously streaming into the batch or other execobjects, we may not flush those writes along with a change in cache domain (as there is no change). Therefore those writes may end up in internal chipset buffers and not visible to the GPU upon execution. We must issue a flush command or otherwise we encounter incoherency in the batchbuffers and the GPU executing invalid commands (i.e. hanging) quite regularly. v2: Throw a paranoid wmb() into the general flush so that we remain consistent with before. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90841 Fixes: 1816f9236303 ("drm/i915: Support creation of unbound wc user...") Signed-off-by: Chris Wilson Cc: Akash Goel Cc: Daniel Vetter Cc: Tvrtko Ursulin Tested-by: Matti Hämäläinen Cc: stable@vger.kernel.org Reviewed-by: Mika Kuoppala Link: http://patchwork.freedesktop.org/patch/msgid/20160818161718.27187-1-chris@chris-wilson.co.uk (cherry picked from commit 600f436801deae65e48404847b61c89b4944e355) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 20fe9d5..3ca674e 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3591,6 +3591,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle); /* belongs in i915_gem_gtt.h */ static inline void i915_gem_chipset_flush(struct drm_i915_private *dev_priv) { + wmb(); if (INTEL_GEN(dev_priv) < 6) intel_gtt_chipset_flush(); } diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 1978633..b35e5b6 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -943,8 +943,6 @@ i915_gem_execbuffer_move_to_gpu(struct drm_i915_gem_request *req, { const unsigned other_rings = ~intel_engine_flag(req->engine); struct i915_vma *vma; - uint32_t flush_domains = 0; - bool flush_chipset = false; int ret; list_for_each_entry(vma, vmas, exec_list) { @@ -957,16 +955,11 @@ i915_gem_execbuffer_move_to_gpu(struct drm_i915_gem_request *req, } if (obj->base.write_domain & I915_GEM_DOMAIN_CPU) - flush_chipset |= i915_gem_clflush_object(obj, false); - - flush_domains |= obj->base.write_domain; + i915_gem_clflush_object(obj, false); } - if (flush_chipset) - i915_gem_chipset_flush(req->engine->i915); - - if (flush_domains & I915_GEM_DOMAIN_GTT) - wmb(); + /* Unconditionally flush any chipset caches (for streaming writes). */ + i915_gem_chipset_flush(req->engine->i915); /* Unconditionally invalidate gpu caches and ensure that we do flush * any residual writes from the previous batch. -- cgit v0.10.2 From 0184c2fff11705d0041c61356c57eac2e033c686 Mon Sep 17 00:00:00 2001 From: Dave Gordon Date: Fri, 19 Aug 2016 15:23:42 +0100 Subject: drm/i915: Reattach comment, complete type specification In the recent patch bc3d674 drm/i915: Allow userspace to request no-error-capture upon ... the final version moved the flags and the associated #defines around so they were adjacent; unfortunately, they ended up between a comment and the thing (hw_id) to which the comment applies :( So this patch reshuffles the comment and subject back together. Also, as we're touching 'hw_id', let's change it from just 'unsigned' to a fully-specified 'unsigned int', because some code checking tools (including checkpatch) object to plain 'unsigned'. Fixes: bc3d674462e5 ("drm/i915: Allow userspace to request no-error-capture...") Signed-off-by: Dave Gordon Cc: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/1471616622-6919-1-git-send-email-david.s.gordon@intel.com Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson (cherry picked from commit 0be81156b3fb4d4e8e2c94177e5222dc21c3ff10) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 3ca674e..46e372e 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -882,11 +882,12 @@ struct i915_gem_context { struct i915_ctx_hang_stats hang_stats; - /* Unique identifier for this context, used by the hw for tracking */ unsigned long flags; #define CONTEXT_NO_ZEROMAP BIT(0) #define CONTEXT_NO_ERROR_CAPTURE BIT(1) - unsigned hw_id; + + /* Unique identifier for this context, used by the hw for tracking */ + unsigned int hw_id; u32 user_handle; u32 ggtt_alignment; -- cgit v0.10.2 From 5bc6abe7674d9cf41dbcdaaf98a19184da181439 Mon Sep 17 00:00:00 2001 From: Lyude Date: Wed, 17 Aug 2016 15:55:53 -0400 Subject: drm/i915/gen6+: Interpret mailbox error flags MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In order to add proper support for the SAGV, we need to be able to know what the cause of a failure to change the SAGV through the pcode mailbox was. The reasoning for this is that some very early pre-release Skylake machines don't actually allow you to control the SAGV on them, and indicate an invalid mailbox command was sent. This also might come in handy in the future for debugging. Changes since v1: - Add functions for interpreting gen6 mailbox error codes along with gen7+ error codes, and actually interpret those codes properly - Renamed patch to reflect new behavior Signed-off-by: Lyude Cc: Matt Roper Cc: Maarten Lankhorst Cc: Daniel Vetter Cc: Ville Syrjälä Cc: stable@vger.kernel.org Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-2-git-send-email-cpaul@redhat.com [mlankhorst: -ENOSYS -> -ENXIO for checkpatch] (cherry picked from commit 87660502f1a4d51fb043e89a45d30c9917787c22) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5c06413..2b9508d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7145,6 +7145,15 @@ enum { #define GEN6_PCODE_MAILBOX _MMIO(0x138124) #define GEN6_PCODE_READY (1<<31) +#define GEN6_PCODE_ERROR_MASK 0xFF +#define GEN6_PCODE_SUCCESS 0x0 +#define GEN6_PCODE_ILLEGAL_CMD 0x1 +#define GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE 0x2 +#define GEN6_PCODE_TIMEOUT 0x3 +#define GEN6_PCODE_UNIMPLEMENTED_CMD 0xFF +#define GEN7_PCODE_TIMEOUT 0x2 +#define GEN7_PCODE_ILLEGAL_DATA 0x3 +#define GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE 0x10 #define GEN6_PCODE_WRITE_RC6VIDS 0x4 #define GEN6_PCODE_READ_RC6VIDS 0x5 #define GEN6_ENCODE_RC6_VID(mv) (((mv) - 245) / 5) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 421c5b7..2c88c2f 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -7671,8 +7671,53 @@ void intel_init_pm(struct drm_device *dev) } } +static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv) +{ + uint32_t flags = + I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK; + + switch (flags) { + case GEN6_PCODE_SUCCESS: + return 0; + case GEN6_PCODE_UNIMPLEMENTED_CMD: + case GEN6_PCODE_ILLEGAL_CMD: + return -ENXIO; + case GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE: + return -EOVERFLOW; + case GEN6_PCODE_TIMEOUT: + return -ETIMEDOUT; + default: + MISSING_CASE(flags) + return 0; + } +} + +static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv) +{ + uint32_t flags = + I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK; + + switch (flags) { + case GEN6_PCODE_SUCCESS: + return 0; + case GEN6_PCODE_ILLEGAL_CMD: + return -ENXIO; + case GEN7_PCODE_TIMEOUT: + return -ETIMEDOUT; + case GEN7_PCODE_ILLEGAL_DATA: + return -EINVAL; + case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE: + return -EOVERFLOW; + default: + MISSING_CASE(flags); + return 0; + } +} + int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val) { + int status; + WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); /* GEN6_PCODE_* are outside of the forcewake domain, we can @@ -7699,12 +7744,25 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val *val = I915_READ_FW(GEN6_PCODE_DATA); I915_WRITE_FW(GEN6_PCODE_DATA, 0); + if (INTEL_GEN(dev_priv) > 6) + status = gen7_check_mailbox_status(dev_priv); + else + status = gen6_check_mailbox_status(dev_priv); + + if (status) { + DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed: %d\n", + status); + return status; + } + return 0; } int sandybridge_pcode_write(struct drm_i915_private *dev_priv, - u32 mbox, u32 val) + u32 mbox, u32 val) { + int status; + WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); /* GEN6_PCODE_* are outside of the forcewake domain, we can @@ -7729,6 +7787,17 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, I915_WRITE_FW(GEN6_PCODE_DATA, 0); + if (INTEL_GEN(dev_priv) > 6) + status = gen7_check_mailbox_status(dev_priv); + else + status = gen6_check_mailbox_status(dev_priv); + + if (status) { + DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed: %d\n", + status); + return status; + } + return 0; } -- cgit v0.10.2 From f403372658fc7b652a77885a4141e58e57d9c75a Mon Sep 17 00:00:00 2001 From: Lyude Date: Wed, 17 Aug 2016 15:55:54 -0400 Subject: drm/i915/skl: Add support for the SAGV, fix underrun hangs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since the watermark calculations for Skylake are still broken, we're apt to hitting underruns very easily under multi-monitor configurations. While it would be lovely if this was fixed, it's not. Another problem that's been coming from this however, is the mysterious issue of underruns causing full system hangs. An easy way to reproduce this with a skylake system: - Get a laptop with a skylake GPU, and hook up two external monitors to it - Move the cursor from the built-in LCD to one of the external displays as quickly as you can - You'll get a few pipe underruns, and eventually the entire system will just freeze. After doing a lot of investigation and reading through the bspec, I found the existence of the SAGV, which is responsible for adjusting the system agent voltage and clock frequencies depending on how much power we need. According to the bspec: "The display engine access to system memory is blocked during the adjustment time. SAGV defaults to enabled. Software must use the GT-driver pcode mailbox to disable SAGV when the display engine is not able to tolerate the blocking time." The rest of the bspec goes on to explain that software can simply leave the SAGV enabled, and disable it when we use interlaced pipes/have more then one pipe active. Sure enough, with this patchset the system hangs resulting from pipe underruns on Skylake have completely vanished on my T460s. Additionally, the bspec mentions turning off the SAGV with more then one pipe enabled as a workaround for display underruns. While this patch doesn't entirely fix that, it looks like it does improve the situation a little bit so it's likely this is going to be required to make watermarks on Skylake fully functional. This will still need additional work in the future: we shouldn't be enabling the SAGV if any of the currently enabled planes can't enable WM levels that introduce latencies >= 30 µs. Changes since v11: - Add skl_can_enable_sagv() - Make sure we don't enable SAGV when not all planes can enable watermarks >= the SAGV engine block time. I was originally going to save this for later, but I recently managed to run into a machine that was having problems with a single pipe configuration + SAGV. - Make comparisons to I915_SKL_SAGV_NOT_CONTROLLED explicit - Change I915_SAGV_DYNAMIC_FREQ to I915_SAGV_ENABLE - Move printks outside of mutexes - Don't print error messages twice Changes since v10: - Apparently sandybridge_pcode_read actually writes values and reads them back, despite it's misleading function name. This means we've been doing this mostly wrong and have been writing garbage to the SAGV control. Because of this, we no longer attempt to read the SAGV status during initialization (since there are no helpers for this). - mlankhorst noticed that this patch was breaking on some very early pre-release Skylake machines, which apparently don't allow you to disable the SAGV. To prevent machines from failing tests due to SAGV errors, if the first time we try to control the SAGV results in the mailbox indicating an invalid command, we just disable future attempts to control the SAGV state by setting dev_priv->skl_sagv_status to I915_SKL_SAGV_NOT_CONTROLLED and make a note of it in dmesg. - Move mutex_unlock() a little higher in skl_enable_sagv(). This doesn't actually fix anything, but lets us release the lock a little sooner since we're finished with it. Changes since v9: - Only enable/disable sagv on Skylake Changes since v8: - Add intel_state->modeset guard to the conditional for skl_enable_sagv() Changes since v7: - Remove GEN9_SAGV_LOW_FREQ, replace with GEN9_SAGV_IS_ENABLED (that's all we use it for anyway) - Use GEN9_SAGV_IS_ENABLED instead of 0x1 for clarification - Fix a styling error that snuck past me Changes since v6: - Protect skl_enable_sagv() with intel_state->modeset conditional in intel_atomic_commit_tail() Changes since v5: - Don't use is_power_of_2. Makes things confusing - Don't use the old state to figure out whether or not to enable/disable the sagv, use the new one - Split the loop in skl_disable_sagv into it's own function - Move skl_sagv_enable/disable() calls into intel_atomic_commit_tail() Changes since v4: - Use is_power_of_2 against active_crtcs to check whether we have > 1 pipe enabled - Fix skl_sagv_get_hw_state(): (temp & 0x1) indicates disabled, 0x0 enabled - Call skl_sagv_enable/disable() from pre/post-plane updates Changes since v3: - Use time_before() to compare timeout to jiffies Changes since v2: - Really apply minor style nitpicks to patch this time Changes since v1: - Added comments about this probably being one of the requirements to fixing Skylake's watermark issues - Minor style nitpicks from Matt Roper - Disable these functions on Broxton, since it doesn't have an SAGV Signed-off-by: Lyude Cc: Matt Roper Cc: Maarten Lankhorst Cc: Daniel Vetter Cc: Ville Syrjälä Cc: stable@vger.kernel.org Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-3-git-send-email-cpaul@redhat.com [mlankhorst: ENOSYS -> ENXIO, whitespace fixes] (cherry picked from commit 656d1b89e5ffb83036ab0e2a24be7558f34365c7) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 46e372e..f68c789 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1964,6 +1964,13 @@ struct drm_i915_private { struct i915_suspend_saved_registers regfile; struct vlv_s0ix_state vlv_s0ix_state; + enum { + I915_SKL_SAGV_UNKNOWN = 0, + I915_SKL_SAGV_DISABLED, + I915_SKL_SAGV_ENABLED, + I915_SKL_SAGV_NOT_CONTROLLED + } skl_sagv_status; + struct { /* * Raw watermark latency values: diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 2b9508d..bf2cad3 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7175,6 +7175,10 @@ enum { #define HSW_PCODE_DE_WRITE_FREQ_REQ 0x17 #define DISPLAY_IPS_CONTROL 0x19 #define HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL 0x1A +#define GEN9_PCODE_SAGV_CONTROL 0x21 +#define GEN9_SAGV_DISABLE 0x0 +#define GEN9_SAGV_IS_DISABLED 0x1 +#define GEN9_SAGV_ENABLE 0x3 #define GEN6_PCODE_DATA _MMIO(0x138128) #define GEN6_PCODE_FREQ_IA_RATIO_SHIFT 8 #define GEN6_PCODE_FREQ_RING_RATIO_SHIFT 16 diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2a751b6..175595f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13759,6 +13759,13 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state) intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco)) dev_priv->display.modeset_commit_cdclk(state); + /* + * SKL workaround: bspec recommends we disable the SAGV when we + * have more then one pipe enabled + */ + if (IS_SKYLAKE(dev_priv) && !skl_can_enable_sagv(state)) + skl_disable_sagv(dev_priv); + intel_modeset_verify_disabled(dev); } @@ -13832,6 +13839,10 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state) intel_modeset_verify_crtc(crtc, old_crtc_state, crtc->state); } + if (IS_SKYLAKE(dev_priv) && intel_state->modeset && + skl_can_enable_sagv(state)) + skl_enable_sagv(dev_priv); + drm_atomic_helper_commit_hw_done(state); if (intel_state->modeset) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index cc937a1..ff399b9 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1716,6 +1716,9 @@ void ilk_wm_get_hw_state(struct drm_device *dev); void skl_wm_get_hw_state(struct drm_device *dev); void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv, struct skl_ddb_allocation *ddb /* out */); +bool skl_can_enable_sagv(struct drm_atomic_state *state); +int skl_enable_sagv(struct drm_i915_private *dev_priv); +int skl_disable_sagv(struct drm_i915_private *dev_priv); uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config); bool ilk_disable_lp_wm(struct drm_device *dev); int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 2c88c2f..496a911 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2852,6 +2852,7 @@ bool ilk_disable_lp_wm(struct drm_device *dev) #define SKL_DDB_SIZE 896 /* in blocks */ #define BXT_DDB_SIZE 512 +#define SKL_SAGV_BLOCK_TIME 30 /* µs */ /* * Return the index of a plane in the SKL DDB and wm result arrays. Primary @@ -2875,6 +2876,153 @@ skl_wm_plane_id(const struct intel_plane *plane) } } +/* + * SAGV dynamically adjusts the system agent voltage and clock frequencies + * depending on power and performance requirements. The display engine access + * to system memory is blocked during the adjustment time. Because of the + * blocking time, having this enabled can cause full system hangs and/or pipe + * underruns if we don't meet all of the following requirements: + * + * - <= 1 pipe enabled + * - All planes can enable watermarks for latencies >= SAGV engine block time + * - We're not using an interlaced display configuration + */ +int +skl_enable_sagv(struct drm_i915_private *dev_priv) +{ + int ret; + + if (dev_priv->skl_sagv_status == I915_SKL_SAGV_NOT_CONTROLLED || + dev_priv->skl_sagv_status == I915_SKL_SAGV_ENABLED) + return 0; + + DRM_DEBUG_KMS("Enabling the SAGV\n"); + mutex_lock(&dev_priv->rps.hw_lock); + + ret = sandybridge_pcode_write(dev_priv, GEN9_PCODE_SAGV_CONTROL, + GEN9_SAGV_ENABLE); + + /* We don't need to wait for the SAGV when enabling */ + mutex_unlock(&dev_priv->rps.hw_lock); + + /* + * Some skl systems, pre-release machines in particular, + * don't actually have an SAGV. + */ + if (ret == -ENXIO) { + DRM_DEBUG_DRIVER("No SAGV found on system, ignoring\n"); + dev_priv->skl_sagv_status = I915_SKL_SAGV_NOT_CONTROLLED; + return 0; + } else if (ret < 0) { + DRM_ERROR("Failed to enable the SAGV\n"); + return ret; + } + + dev_priv->skl_sagv_status = I915_SKL_SAGV_ENABLED; + return 0; +} + +static int +skl_do_sagv_disable(struct drm_i915_private *dev_priv) +{ + int ret; + uint32_t temp = GEN9_SAGV_DISABLE; + + ret = sandybridge_pcode_read(dev_priv, GEN9_PCODE_SAGV_CONTROL, + &temp); + if (ret) + return ret; + else + return temp & GEN9_SAGV_IS_DISABLED; +} + +int +skl_disable_sagv(struct drm_i915_private *dev_priv) +{ + int ret, result; + + if (dev_priv->skl_sagv_status == I915_SKL_SAGV_NOT_CONTROLLED || + dev_priv->skl_sagv_status == I915_SKL_SAGV_DISABLED) + return 0; + + DRM_DEBUG_KMS("Disabling the SAGV\n"); + mutex_lock(&dev_priv->rps.hw_lock); + + /* bspec says to keep retrying for at least 1 ms */ + ret = wait_for(result = skl_do_sagv_disable(dev_priv), 1); + mutex_unlock(&dev_priv->rps.hw_lock); + + if (ret == -ETIMEDOUT) { + DRM_ERROR("Request to disable SAGV timed out\n"); + return -ETIMEDOUT; + } + + /* + * Some skl systems, pre-release machines in particular, + * don't actually have an SAGV. + */ + if (result == -ENXIO) { + DRM_DEBUG_DRIVER("No SAGV found on system, ignoring\n"); + dev_priv->skl_sagv_status = I915_SKL_SAGV_NOT_CONTROLLED; + return 0; + } else if (result < 0) { + DRM_ERROR("Failed to disable the SAGV\n"); + return result; + } + + dev_priv->skl_sagv_status = I915_SKL_SAGV_DISABLED; + return 0; +} + +bool skl_can_enable_sagv(struct drm_atomic_state *state) +{ + struct drm_device *dev = state->dev; + struct drm_i915_private *dev_priv = to_i915(dev); + struct intel_atomic_state *intel_state = to_intel_atomic_state(state); + struct drm_crtc *crtc; + enum pipe pipe; + int level, plane; + + /* + * SKL workaround: bspec recommends we disable the SAGV when we have + * more then one pipe enabled + * + * If there are no active CRTCs, no additional checks need be performed + */ + if (hweight32(intel_state->active_crtcs) == 0) + return true; + else if (hweight32(intel_state->active_crtcs) > 1) + return false; + + /* Since we're now guaranteed to only have one active CRTC... */ + pipe = ffs(intel_state->active_crtcs) - 1; + crtc = dev_priv->pipe_to_crtc_mapping[pipe]; + + if (crtc->state->mode.flags & DRM_MODE_FLAG_INTERLACE) + return false; + + for_each_plane(dev_priv, pipe, plane) { + /* Skip this plane if it's not enabled */ + if (intel_state->wm_results.plane[pipe][plane][0] == 0) + continue; + + /* Find the highest enabled wm level for this plane */ + for (level = ilk_wm_max_level(dev); + intel_state->wm_results.plane[pipe][plane][level] == 0; --level) + { } + + /* + * If any of the planes on this pipe don't enable wm levels + * that incur memory latencies higher then 30µs we can't enable + * the SAGV + */ + if (dev_priv->wm.skl_latency[level] < SKL_SAGV_BLOCK_TIME) + return false; + } + + return true; +} + static void skl_ddb_get_pipe_allocation_limits(struct drm_device *dev, const struct intel_crtc_state *cstate, -- cgit v0.10.2 From 9909113cc48a7ce6e772573e3cc82a3f03ffa8ef Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Wed, 17 Aug 2016 15:55:55 -0400 Subject: drm/i915/gen9: Only copy WM results for changed pipes to skl_hw MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When we write watermark values to the hardware, those values are stored in dev_priv->wm.skl_hw. However with recent watermark changes, the results structure we're copying from only contains valid watermark and DDB values for the pipes that are actually changing; the values for other pipes remain 0. Thus a blind copy of the entire skl_wm_values structure will clobber the values for unchanged pipes...we need to be more selective and only copy over the values for the changing pipes. This mistake was hidden until recently due to another bug that caused us to erroneously re-calculate watermarks for all active pipes rather than changing pipes. Only when that bug was fixed was the impact of this bug discovered (e.g., modesets failing with "Requested display configuration exceeds system watermark limitations" messages and leaving watermarks non-functional, even ones initiated by intel_fbdev_restore_mode). Changes since v1: - Add a function for copying a pipe's wm values (skl_copy_wm_for_pipe()) so we can reuse this later Fixes: 734fa01f3a17 ("drm/i915/gen9: Calculate watermarks during atomic 'check' (v2)") Fixes: 9b6130227495 ("drm/i915/gen9: Re-allocate DDB only for changed pipes") Signed-off-by: Matt Roper Signed-off-by: Lyude Reviewed-by: Matt Roper Cc: stable@vger.kernel.org Cc: Maarten Lankhorst Cc: Ville Syrjälä Cc: Daniel Vetter Cc: Radhakrishna Sripada Cc: Hans de Goede Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-4-git-send-email-cpaul@redhat.com (cherry picked from commit 2722efb90b3420dee54b4cb3cdc7917efacc2dce) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 496a911..70dcf8d 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4109,6 +4109,24 @@ skl_compute_ddb(struct drm_atomic_state *state) return 0; } +static void +skl_copy_wm_for_pipe(struct skl_wm_values *dst, + struct skl_wm_values *src, + enum pipe pipe) +{ + dst->wm_linetime[pipe] = src->wm_linetime[pipe]; + memcpy(dst->plane[pipe], src->plane[pipe], + sizeof(dst->plane[pipe])); + memcpy(dst->plane_trans[pipe], src->plane_trans[pipe], + sizeof(dst->plane_trans[pipe])); + + dst->ddb.pipe[pipe] = src->ddb.pipe[pipe]; + memcpy(dst->ddb.y_plane[pipe], src->ddb.y_plane[pipe], + sizeof(dst->ddb.y_plane[pipe])); + memcpy(dst->ddb.plane[pipe], src->ddb.plane[pipe], + sizeof(dst->ddb.plane[pipe])); +} + static int skl_compute_wm(struct drm_atomic_state *state) { @@ -4181,8 +4199,10 @@ static void skl_update_wm(struct drm_crtc *crtc) struct drm_device *dev = crtc->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct skl_wm_values *results = &dev_priv->wm.skl_results; + struct skl_wm_values *hw_vals = &dev_priv->wm.skl_hw; struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); struct skl_pipe_wm *pipe_wm = &cstate->wm.skl.optimal; + int pipe; if ((results->dirty_pipes & drm_crtc_mask(crtc)) == 0) return; @@ -4194,8 +4214,12 @@ static void skl_update_wm(struct drm_crtc *crtc) skl_write_wm_values(dev_priv, results); skl_flush_wm_values(dev_priv, results); - /* store the new configuration */ - dev_priv->wm.skl_hw = *results; + /* + * Store the new configuration (but only for the pipes that have + * changed; the other values weren't recomputed). + */ + for_each_pipe_masked(dev_priv, pipe, results->dirty_pipes) + skl_copy_wm_for_pipe(hw_vals, results, pipe); mutex_unlock(&dev_priv->wm.wm_mutex); } -- cgit v0.10.2 From 762c60ab0257d25eea8db3e3fec85ed53b5330fe Mon Sep 17 00:00:00 2001 From: Lyude Date: Wed, 17 Aug 2016 15:55:57 -0400 Subject: drm/i915/skl: Ensure pipes with changed wms get added to the state MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If we're enabling a pipe, we'll need to modify the watermarks on all active planes. Since those planes won't be added to the state on their own, we need to add them ourselves. Signed-off-by: Lyude Reviewed-by: Matt Roper Cc: stable@vger.kernel.org Cc: Ville Syrjälä Cc: Daniel Vetter Cc: Radhakrishna Sripada Cc: Hans de Goede Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-6-git-send-email-cpaul@redhat.com (cherry picked from commit 05a76d3d6ad1ee9f9814f88949cc9305fc165460) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 70dcf8d..53e13c1 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4104,6 +4104,10 @@ skl_compute_ddb(struct drm_atomic_state *state) ret = skl_allocate_pipe_ddb(cstate, ddb); if (ret) return ret; + + ret = drm_atomic_add_affected_planes(state, &intel_crtc->base); + if (ret) + return ret; } return 0; -- cgit v0.10.2 From 177d91aaea4bcafb29232336bafaa521b85286aa Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Mon, 15 Aug 2016 15:09:27 +0200 Subject: drm/i915: Fix botched merge that downgrades CSR versions. Merge commit 5e580523d9128a4d8 reverts the version bumping parts of commit 4aa7fb9c3c4fa0. Bump the versions again and request the specific firmware version. The currently recommended versions are: SKL 1.26, KBL 1.01 and BXT 1.07. Cc: Patrik Jakobsson Cc: Imre Deak Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97242 Cc: drm-intel-fixes@lists.freedesktop.org Fixes: 5e580523d912 ("Backmerge tag 'v4.7' into drm-next") Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1471266567-22443-1-git-send-email-maarten.lankhorst@linux.intel.com Reviewed-by: Imre Deak (cherry picked from commit 536ab3ca19ef856e84389a155c5832c68559a28a) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c index 3edb958..c3b33a1 100644 --- a/drivers/gpu/drm/i915/intel_csr.c +++ b/drivers/gpu/drm/i915/intel_csr.c @@ -41,15 +41,15 @@ * be moved to FW_FAILED. */ -#define I915_CSR_KBL "i915/kbl_dmc_ver1.bin" +#define I915_CSR_KBL "i915/kbl_dmc_ver1_01.bin" MODULE_FIRMWARE(I915_CSR_KBL); #define KBL_CSR_VERSION_REQUIRED CSR_VERSION(1, 1) -#define I915_CSR_SKL "i915/skl_dmc_ver1.bin" +#define I915_CSR_SKL "i915/skl_dmc_ver1_26.bin" MODULE_FIRMWARE(I915_CSR_SKL); -#define SKL_CSR_VERSION_REQUIRED CSR_VERSION(1, 23) +#define SKL_CSR_VERSION_REQUIRED CSR_VERSION(1, 26) -#define I915_CSR_BXT "i915/bxt_dmc_ver1.bin" +#define I915_CSR_BXT "i915/bxt_dmc_ver1_07.bin" MODULE_FIRMWARE(I915_CSR_BXT); #define BXT_CSR_VERSION_REQUIRED CSR_VERSION(1, 7) -- cgit v0.10.2 From a32ac2912f97d7ea9b67eb67bb4aa30b9156a88e Mon Sep 17 00:00:00 2001 From: James Hartley Date: Fri, 19 Aug 2016 12:03:23 +0100 Subject: pinctrl: pistachio: fix mfio pll_lock pinmux A previous patch attempted to fix the pinmuxes for mfio 84 - 89, but it omitted a change to pistachio_pin_group pistachio_groups, which results in incorrect pll_lock signals being routed. Apply the correct mux settings throughout the driver. fixes: cefc03e5995e ("pinctrl: Add Pistachio SoC pin control driver") fixes: e9adb336d0bf ("pinctrl: pistachio: fix mfio84-89 function description and pinmux.") Cc: # 4.4.x- Signed-off-by: James Hartley Reviewed-by: Sifan Naeem Signed-off-by: Linus Walleij diff --git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c index 7bad200..55375b1 100644 --- a/drivers/pinctrl/pinctrl-pistachio.c +++ b/drivers/pinctrl/pinctrl-pistachio.c @@ -809,17 +809,17 @@ static const struct pistachio_pin_group pistachio_groups[] = { PADS_FUNCTION_SELECT2, 12, 0x3), MFIO_MUX_PIN_GROUP(83, MIPS_PLL_LOCK, MIPS_TRACE_DATA, USB_DEBUG, PADS_FUNCTION_SELECT2, 14, 0x3), - MFIO_MUX_PIN_GROUP(84, SYS_PLL_LOCK, MIPS_TRACE_DATA, USB_DEBUG, + MFIO_MUX_PIN_GROUP(84, AUDIO_PLL_LOCK, MIPS_TRACE_DATA, USB_DEBUG, PADS_FUNCTION_SELECT2, 16, 0x3), - MFIO_MUX_PIN_GROUP(85, WIFI_PLL_LOCK, MIPS_TRACE_DATA, SDHOST_DEBUG, + MFIO_MUX_PIN_GROUP(85, RPU_V_PLL_LOCK, MIPS_TRACE_DATA, SDHOST_DEBUG, PADS_FUNCTION_SELECT2, 18, 0x3), - MFIO_MUX_PIN_GROUP(86, BT_PLL_LOCK, MIPS_TRACE_DATA, SDHOST_DEBUG, + MFIO_MUX_PIN_GROUP(86, RPU_L_PLL_LOCK, MIPS_TRACE_DATA, SDHOST_DEBUG, PADS_FUNCTION_SELECT2, 20, 0x3), - MFIO_MUX_PIN_GROUP(87, RPU_V_PLL_LOCK, DREQ2, SOCIF_DEBUG, + MFIO_MUX_PIN_GROUP(87, SYS_PLL_LOCK, DREQ2, SOCIF_DEBUG, PADS_FUNCTION_SELECT2, 22, 0x3), - MFIO_MUX_PIN_GROUP(88, RPU_L_PLL_LOCK, DREQ3, SOCIF_DEBUG, + MFIO_MUX_PIN_GROUP(88, WIFI_PLL_LOCK, DREQ3, SOCIF_DEBUG, PADS_FUNCTION_SELECT2, 24, 0x3), - MFIO_MUX_PIN_GROUP(89, AUDIO_PLL_LOCK, DREQ4, DREQ5, + MFIO_MUX_PIN_GROUP(89, BT_PLL_LOCK, DREQ4, DREQ5, PADS_FUNCTION_SELECT2, 26, 0x3), PIN_GROUP(TCK, "tck"), PIN_GROUP(TRSTN, "trstn"), -- cgit v0.10.2 From bcb48cca23ec9852739e4a464307fa29515bbe48 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Mon, 22 Aug 2016 14:42:52 +0300 Subject: pinctrl: cherryview: Do not mask all interrupts in probe The Cherryview GPIO controller has 8 or 16 wires connected to the I/O-APIC which can be used directly by the platform/BIOS or drivers. One such wire is used as SCI (System Control Interrupt) which ACPI depends on to be able to trigger GPEs (General Purpose Events). The pinctrl driver itself uses another IRQ resource which is wire OR of all the 8 (or 16) wires and follows what BIOS has programmed to the IntSel register of each pin. Currently the driver masks all interrupts at probe time and this prevents these direct interrupts from working as expected. The reason for this is that some early stage prototypes had some pins misconfigured causing lots of spurious interrupts. We fix this by leaving the interrupt mask untouched. This allows SCI and other direct interrupts work properly. What comes to the possible spurious interrupts we switch the default handler to be handle_bad_irq() instead of handle_simple_irq() (which was not correct anyway). Reported-by: Yu C Chen Reported-by: Anisse Astier Signed-off-by: Mika Westerberg Signed-off-by: Linus Walleij diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c index 5749a4ee..0fe8fad 100644 --- a/drivers/pinctrl/intel/pinctrl-cherryview.c +++ b/drivers/pinctrl/intel/pinctrl-cherryview.c @@ -1539,12 +1539,11 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) offset += range->npins; } - /* Mask and clear all interrupts */ - chv_writel(0, pctrl->regs + CHV_INTMASK); + /* Clear all interrupts */ chv_writel(0xffff, pctrl->regs + CHV_INTSTAT); ret = gpiochip_irqchip_add(chip, &chv_gpio_irqchip, 0, - handle_simple_irq, IRQ_TYPE_NONE); + handle_bad_irq, IRQ_TYPE_NONE); if (ret) { dev_err(pctrl->dev, "failed to add IRQ chip\n"); goto fail; -- cgit v0.10.2 From e9e5e3fae8da7e237049e00e0bfc9e32fd808fe8 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Mon, 22 Aug 2016 12:47:43 +0200 Subject: bdev: fix NULL pointer dereference I got this: kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) CPU: 0 PID: 5505 Comm: syz-executor Not tainted 4.8.0-rc2+ #161 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014 task: ffff880113415940 task.stack: ffff880118350000 RIP: 0010:[] [] bd_mount+0x52/0xa0 RSP: 0018:ffff880118357ca0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffffffffffffffff RCX: ffffc90000bb6000 RDX: 0000000000000018 RSI: ffffffff846d6b20 RDI: 00000000000000c7 RBP: ffff880118357cb0 R08: ffff880115967c68 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801188211e8 R13: ffffffff847baa20 R14: ffff8801139cb000 R15: 0000000000000080 FS: 00007fa3ff6c0700(0000) GS:ffff88011aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc1d8cc7e78 CR3: 0000000109f20000 CR4: 00000000000006f0 DR0: 000000000000001e DR1: 000000000000001e DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Stack: ffff880112cfd6c0 ffff8801188211e8 ffff880118357cf0 ffffffff8167f207 ffffffff816d7a1e ffff880112a413c0 ffffffff847baa20 ffff8801188211e8 0000000000000080 ffff880112cfd6c0 ffff880118357d38 ffffffff816dce0a Call Trace: [] mount_fs+0x97/0x2e0 [] ? alloc_vfsmnt+0x55e/0x760 [] vfs_kern_mount+0x7a/0x300 [] ? _raw_read_unlock+0x2c/0x50 [] do_mount+0x3d7/0x2730 [] ? trace_do_page_fault+0x1f4/0x3a0 [] ? copy_mount_string+0x40/0x40 [] ? memset+0x31/0x40 [] ? copy_mount_options+0x1ee/0x320 [] SyS_mount+0xb2/0x120 [] ? copy_mnt_ns+0x970/0x970 [] do_syscall_64+0x1c4/0x4e0 [] entry_SYSCALL64_slow_path+0x25/0x25 Code: 83 e8 63 1b fc ff 48 85 c0 48 89 c3 74 4c e8 56 35 d1 ff 48 8d bb c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 36 4c 8b a3 c8 00 00 00 48 b8 00 00 00 00 00 fc RIP [] bd_mount+0x52/0xa0 RSP ---[ end trace 13690ad962168b98 ]--- mount_pseudo() returns ERR_PTR(), not NULL, on error. Fixes: 3684aa7099e0 ("block-dev: enable writeback cgroup support") Cc: Shaohua Li Cc: Tejun Heo Cc: Jens Axboe Cc: stable@vger.kernel.org Signed-off-by: Vegard Nossum Signed-off-by: Jens Axboe diff --git a/fs/block_dev.c b/fs/block_dev.c index c3cdde8..e17bdbd 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -646,7 +646,7 @@ static struct dentry *bd_mount(struct file_system_type *fs_type, { struct dentry *dent; dent = mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC); - if (dent) + if (!IS_ERR(dent)) dent->d_sb->s_iflags |= SB_I_CGROUPWB; return dent; } -- cgit v0.10.2 From 05860bed491b114a9f2d7a4f6e09fb02c0b69056 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 19 Aug 2016 13:37:38 +0300 Subject: ath9k: fix client mode beacon configuration For pure station mode, iter_data.primary_beacon_vif was used and passed to ath_beacon_config, but not set to the station vif. This was causing the following warning: [ 100.310919] ------------[ cut here ]------------ [ 100.315683] WARNING: CPU: 0 PID: 7 at compat-wireless-2016-06-20/drivers/net/wireless/ath/ath9k/beacon.c:642 ath9k_calculate_summary_state+0x250/0x60c [ath9k]() [ 100.402028] CPU: 0 PID: 7 Comm: kworker/u2:1 Tainted: G W 4.4.15 #5 [ 100.409676] Workqueue: phy0 ieee80211_ibss_leave [mac80211] [ 100.415351] Stack : 8736e98c 870b4b20 87a25b54 800a6800 8782a080 80400d63 8039b96c 00000007 [ 100.415351] 803c5edc 87875914 80400000 800a47cc 87a25b54 800a6800 803a0fd8 80400000 [ 100.415351] 00000003 87875914 80400000 80094ae0 87a25b54 8787594c 00000000 801ef308 [ 100.415351] 803ffe70 801ef300 87193d58 87b3a400 87b3ad00 70687930 00000000 00000000 [ 100.415351] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 100.415351] ... [ 100.451703] Call Trace: [ 100.454235] [<800a6800>] vprintk_default+0x24/0x30 [ 100.459110] [<800a47cc>] printk+0x2c/0x38 [ 100.463190] [<800a6800>] vprintk_default+0x24/0x30 [ 100.468072] [<80094ae0>] print_worker_info+0x148/0x174 [ 100.473378] [<801ef308>] serial8250_console_putchar+0x0/0x44 [ 100.479122] [<801ef300>] wait_for_xmitr+0xc4/0xcc [ 100.484014] [<87193d58>] ieee80211_ibss_leave+0xb90/0x1900 [mac80211] [ 100.490590] [<80081604>] warn_slowpath_common+0xa0/0xd0 [ 100.495922] [<801a359c>] dump_stack+0x14/0x28 [ 100.500350] [<80071a00>] show_stack+0x50/0x84 [ 100.504784] [<80081604>] warn_slowpath_common+0xa0/0xd0 [ 100.510106] [<87024c60>] ath9k_calculate_summary_state+0x250/0x60c [ath9k] [ 100.517105] [<800816b8>] warn_slowpath_null+0x18/0x24 [ 100.522256] [<87024c60>] ath9k_calculate_summary_state+0x250/0x60c [ath9k] [ 100.529273] [<87025418>] ath9k_set_txpower+0x148/0x498 [ath9k] [ 100.535302] [<871d2c64>] cleanup_module+0xa74/0xd4c [mac80211] [ 100.541237] [<801ef308>] serial8250_console_putchar+0x0/0x44 [ 100.547042] [<800a5d18>] wake_up_klogd+0x54/0x68 [ 100.551730] [<800a6650>] vprintk_emit+0x404/0x43c [ 100.556623] [<871b9db8>] ieee80211_sta_rx_notify+0x258/0x32c [mac80211] [ 100.563475] [<871ba6a4>] ieee80211_sta_rx_queued_mgmt+0x63c/0x734 [mac80211] [ 100.570693] [<871aa49c>] ieee80211_tx_prepare_skb+0x210/0x230 [mac80211] [ 100.577609] [<800af5d4>] mod_timer+0x15c/0x190 [ 100.582220] [<871ba8b8>] ieee80211_sta_work+0xfc/0xe1c [mac80211] [ 100.588539] [<871940b4>] ieee80211_ibss_leave+0xeec/0x1900 [mac80211] [ 100.595122] [<8009ec84>] dequeue_task_fair+0x44/0x130 [ 100.600281] [<80092a34>] process_one_work+0x1f8/0x334 [ 100.605454] [<80093830>] worker_thread+0x2b4/0x408 [ 100.610317] [<8009357c>] worker_thread+0x0/0x408 [ 100.615019] [<8009357c>] worker_thread+0x0/0x408 [ 100.619705] [<80097b68>] kthread+0xdc/0xe8 [ 100.623886] [<80097a8c>] kthread+0x0/0xe8 [ 100.627961] [<80060878>] ret_from_kernel_thread+0x14/0x1c [ 100.633448] [ 100.634956] ---[ end trace aafbe57e9ae6862f ]--- Fixes: cfda2d8e2314 ("ath9k: Fix beacon configuration for addition/removal of interfaces") Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index a394622..098745d 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1154,6 +1154,7 @@ void ath9k_calculate_summary_state(struct ath_softc *sc, bool changed = (iter_data.primary_sta != ctx->primary_sta); if (iter_data.primary_sta) { + iter_data.primary_beacon_vif = iter_data.primary_sta; iter_data.beacons = true; ath9k_set_assoc_state(sc, iter_data.primary_sta, changed); -- cgit v0.10.2 From 7711aaf08ad3fc4d0e937eec1de0a63620444ce7 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 19 Aug 2016 13:37:46 +0300 Subject: ath9k: fix using sta->drv_priv before initializing it A station pointer can be passed to the driver on tx, before it has been marked as associated. Since ath9k_sta_state was initializing the entry too late, it resulted in some spurious crashes. Fixes: df3c6eb34da5 ("ath9k: Use sta_state() callback") Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 098745d..6ca4337 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1564,13 +1564,13 @@ static int ath9k_sta_state(struct ieee80211_hw *hw, struct ath_common *common = ath9k_hw_common(sc->sc_ah); int ret = 0; - if (old_state == IEEE80211_STA_AUTH && - new_state == IEEE80211_STA_ASSOC) { + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE) { ret = ath9k_sta_add(hw, vif, sta); ath_dbg(common, CONFIG, "Add station: %pM\n", sta->addr); - } else if (old_state == IEEE80211_STA_ASSOC && - new_state == IEEE80211_STA_AUTH) { + } else if (old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST) { ret = ath9k_sta_remove(hw, vif, sta); ath_dbg(common, CONFIG, "Remove station: %pM\n", sta->addr); -- cgit v0.10.2 From 209c721ce27022656a9d792b89572c4fdd7d31a7 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 21 Aug 2016 15:37:16 +0000 Subject: ASoC: max98371: Add terminate entry for i2c_device_id tables Make sure i2c_device_id tables are NULL terminated. Signed-off-by: Wei Yongjun Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/max98371.c b/sound/soc/codecs/max98371.c index cf0a39b..02352ed 100644 --- a/sound/soc/codecs/max98371.c +++ b/sound/soc/codecs/max98371.c @@ -412,6 +412,7 @@ static int max98371_i2c_remove(struct i2c_client *client) static const struct i2c_device_id max98371_i2c_id[] = { { "max98371", 0 }, + { } }; MODULE_DEVICE_TABLE(i2c, max98371_i2c_id); -- cgit v0.10.2 From 6a33fa2b87513fee44cb8f0cd17b1acd6316bc6b Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Fri, 19 Aug 2016 18:07:14 +0100 Subject: irqchip/mips-gic: Cleanup chip and handler setup gic_shared_irq_domain_map() is called from gic_irq_domain_alloc() where the wrong chip has been set, and is then overwritten. Tidy this up by setting the correct chip the first time, and setting the handle_level_irq handler from gic_irq_domain_alloc() too. gic_shared_irq_domain_map() is also called from gic_irq_domain_map(), which now calls irq_set_chip_and_handler() to retain its previous behaviour. This patch prepares for a follow-on which will call gic_shared_irq_domain_map() from a callback where the lock on the struct irq_desc is held, which without this change would cause the call to irq_set_chip_and_handler() to lead to a deadlock. Fixes: c98c1822ee13 ("irqchip/mips-gic: Add device hierarchy domain") Signed-off-by: Paul Burton Cc: linux-mips@linux-mips.org Cc: Jason Cooper Cc: Marc Zyngier Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160819170715.27820-1-paul.burton@imgtec.com Signed-off-by: Thomas Gleixner diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index c5f33c3..2e0f499 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -713,9 +713,6 @@ static int gic_shared_irq_domain_map(struct irq_domain *d, unsigned int virq, unsigned long flags; int i; - irq_set_chip_and_handler(virq, &gic_level_irq_controller, - handle_level_irq); - spin_lock_irqsave(&gic_lock, flags); gic_map_to_pin(intr, gic_cpu_pin); gic_map_to_vpe(intr, mips_cm_vp_id(vpe)); @@ -732,6 +729,10 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int virq, { if (GIC_HWIRQ_TO_LOCAL(hw) < GIC_NUM_LOCAL_INTRS) return gic_local_irq_domain_map(d, virq, hw); + + irq_set_chip_and_handler(virq, &gic_level_irq_controller, + handle_level_irq); + return gic_shared_irq_domain_map(d, virq, hw, 0); } @@ -771,11 +772,13 @@ static int gic_irq_domain_alloc(struct irq_domain *d, unsigned int virq, hwirq = GIC_SHARED_TO_HWIRQ(base_hwirq + i); ret = irq_domain_set_hwirq_and_chip(d, virq + i, hwirq, - &gic_edge_irq_controller, + &gic_level_irq_controller, NULL); if (ret) goto error; + irq_set_handler(virq + i, handle_level_irq); + ret = gic_shared_irq_domain_map(d, virq + i, hwirq, cpu); if (ret) goto error; -- cgit v0.10.2 From 2564970a381651865364974ea414384b569cb9c0 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Fri, 19 Aug 2016 18:07:15 +0100 Subject: irqchip/mips-gic: Implement activate op for device domain If an IRQ is setup using __setup_irq(), which is used by the request_irq() family of functions, and we are using an SMP kernel then the affinity of the IRQ will be set via setup_affinity() immediately after the IRQ is enabled. This call to gic_set_affinity() will lead to the interrupt being mapped to a VPE. However there are other ways to use IRQs which don't cause affinity to be set, for example if it is used to chain to another IRQ controller with irq_set_chained_handler_and_data(). The irq_set_chained_handler_and_data() code path will enable the IRQ, but will not trigger a call to gic_set_affinity() and in this case nothing will map the interrupt to a VPE, meaning that the interrupt is never received. Fix this by implementing the activate operation for the GIC device IRQ domain, using gic_shared_irq_domain_map() to map the interrupt to the correct pin of cpu 0. Fixes: c98c1822ee13 ("irqchip/mips-gic: Add device hierarchy domain") Signed-off-by: Paul Burton Cc: linux-mips@linux-mips.org Cc: Jason Cooper Cc: Marc Zyngier Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160819170715.27820-2-paul.burton@imgtec.com Signed-off-by: Thomas Gleixner diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 2e0f499..83f4983 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -893,10 +893,17 @@ void gic_dev_domain_free(struct irq_domain *d, unsigned int virq, return; } +static void gic_dev_domain_activate(struct irq_domain *domain, + struct irq_data *d) +{ + gic_shared_irq_domain_map(domain, d->irq, d->hwirq, 0); +} + static struct irq_domain_ops gic_dev_domain_ops = { .xlate = gic_dev_domain_xlate, .alloc = gic_dev_domain_alloc, .free = gic_dev_domain_free, + .activate = gic_dev_domain_activate, }; static int gic_ipi_domain_xlate(struct irq_domain *d, struct device_node *ctrlr, -- cgit v0.10.2 From e6a00f6684c9f348cd782922b4b277c68ab90b63 Mon Sep 17 00:00:00 2001 From: Yuval Shaia Date: Wed, 27 Jul 2016 01:24:52 -0700 Subject: IB/mlx4: Make function use_tunnel_data return void No need to return int if function always returns 0 Signed-off-by: Yuval Shaia Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index d6fc8a6..15b6289 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -576,8 +576,8 @@ static int mlx4_ib_ipoib_csum_ok(__be16 status, __be16 checksum) checksum == cpu_to_be16(0xffff); } -static int use_tunnel_data(struct mlx4_ib_qp *qp, struct mlx4_ib_cq *cq, struct ib_wc *wc, - unsigned tail, struct mlx4_cqe *cqe, int is_eth) +static void use_tunnel_data(struct mlx4_ib_qp *qp, struct mlx4_ib_cq *cq, struct ib_wc *wc, + unsigned tail, struct mlx4_cqe *cqe, int is_eth) { struct mlx4_ib_proxy_sqp_hdr *hdr; @@ -600,8 +600,6 @@ static int use_tunnel_data(struct mlx4_ib_qp *qp, struct mlx4_ib_cq *cq, struct wc->slid = be16_to_cpu(hdr->tun.slid_mac_47_32); wc->sl = (u8) (be16_to_cpu(hdr->tun.sl_vid) >> 12); } - - return 0; } static void mlx4_ib_qp_sw_comp(struct mlx4_ib_qp *qp, int num_entries, @@ -852,9 +850,11 @@ repoll: if (mlx4_is_mfunc(to_mdev(cq->ibcq.device)->dev)) { if ((*cur_qp)->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | - MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) - return use_tunnel_data(*cur_qp, cq, wc, tail, - cqe, is_eth); + MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { + use_tunnel_data(*cur_qp, cq, wc, tail, cqe, + is_eth); + return 0; + } } wc->slid = be16_to_cpu(cqe->rlid); -- cgit v0.10.2 From 5412352fcd8fba7f278ae8c9ba36296716f17ae8 Mon Sep 17 00:00:00 2001 From: Yuval Shaia Date: Wed, 27 Jul 2016 01:24:53 -0700 Subject: IB/mlx4: Return EAGAIN for any error in mlx4_ib_poll_one Error code EAGAIN should be used when errors are temporary and next call might succeeds. When error code other than EAGAIN is returned, the caller (mlx4_ib_poll) will assume all CQE in the same bunch are error too and will drop them all. Signed-off-by: Yuval Shaia Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 15b6289..006db64 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -690,7 +690,7 @@ repoll: if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_OPCODE_NOP && is_send)) { pr_warn("Completion for NOP opcode detected!\n"); - return -EINVAL; + return -EAGAIN; } /* Resize CQ in progress */ @@ -721,7 +721,7 @@ repoll: if (unlikely(!mqp)) { pr_warn("CQ %06x with entry for unknown QPN %06x\n", cq->mcq.cqn, be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK); - return -EINVAL; + return -EAGAIN; } *cur_qp = to_mibqp(mqp); @@ -739,7 +739,7 @@ repoll: if (unlikely(!msrq)) { pr_warn("CQ %06x with entry for unknown SRQN %06x\n", cq->mcq.cqn, srq_num); - return -EINVAL; + return -EAGAIN; } } -- cgit v0.10.2 From 8303f683b161467b6595c153c8751b80f9df3508 Mon Sep 17 00:00:00 2001 From: Tadeusz Struk Date: Wed, 3 Aug 2016 20:19:32 -0400 Subject: IB/hfi1: Allocate cpu mask on the heap to silence warning If CONFIG_FRAME_WARN is small (1K) and CONFIG_NR_CPUS big then a frame size warning is triggered during build. Allocate the cpu mask dynamically to silence the warning. Reviewed-by: Sebastian Sanchez Signed-off-by: Tadeusz Struk Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index 79575ee..9bbb214 100644 --- a/drivers/infiniband/hw/hfi1/affinity.c +++ b/drivers/infiniband/hw/hfi1/affinity.c @@ -682,7 +682,7 @@ int hfi1_set_sdma_affinity(struct hfi1_devdata *dd, const char *buf, size_t count) { struct hfi1_affinity_node *entry; - struct cpumask mask; + cpumask_var_t mask; int ret, i; spin_lock(&node_affinity.lock); @@ -692,19 +692,24 @@ int hfi1_set_sdma_affinity(struct hfi1_devdata *dd, const char *buf, if (!entry) return -EINVAL; - ret = cpulist_parse(buf, &mask); + ret = zalloc_cpumask_var(&mask, GFP_KERNEL); + if (!ret) + return -ENOMEM; + + ret = cpulist_parse(buf, mask); if (ret) - return ret; + goto out; - if (!cpumask_subset(&mask, cpu_online_mask) || cpumask_empty(&mask)) { + if (!cpumask_subset(mask, cpu_online_mask) || cpumask_empty(mask)) { dd_dev_warn(dd, "Invalid CPU mask\n"); - return -EINVAL; + ret = -EINVAL; + goto out; } mutex_lock(&sdma_affinity_mutex); /* reset the SDMA interrupt affinity details */ init_cpu_mask_set(&entry->def_intr); - cpumask_copy(&entry->def_intr.mask, &mask); + cpumask_copy(&entry->def_intr.mask, mask); /* * Reassign the affinity for each SDMA interrupt. */ @@ -720,8 +725,9 @@ int hfi1_set_sdma_affinity(struct hfi1_devdata *dd, const char *buf, if (ret) break; } - mutex_unlock(&sdma_affinity_mutex); +out: + free_cpumask_var(mask); return ret ? ret : strnlen(buf, PAGE_SIZE); } -- cgit v0.10.2 From 23d70503ee187819a3775c7ac73f17c5bfe3fad0 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 5 Aug 2016 13:46:49 +0000 Subject: IB/core: Fix possible memory leak in cma_resolve_iboe_route() 'work' and 'route->path_rec' are malloced in cma_resolve_iboe_route() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: 200298326b27 ('IB/core: Validate route when we init ah') Signed-off-by: Wei Yongjun Reviewed-by: Haggai Eran Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index e6dfa1b..5f65a78 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2462,18 +2462,24 @@ static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) if (addr->dev_addr.bound_dev_if) { ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); - if (!ndev) - return -ENODEV; + if (!ndev) { + ret = -ENODEV; + goto err2; + } if (ndev->flags & IFF_LOOPBACK) { dev_put(ndev); - if (!id_priv->id.device->get_netdev) - return -EOPNOTSUPP; + if (!id_priv->id.device->get_netdev) { + ret = -EOPNOTSUPP; + goto err2; + } ndev = id_priv->id.device->get_netdev(id_priv->id.device, id_priv->id.port_num); - if (!ndev) - return -ENODEV; + if (!ndev) { + ret = -ENODEV; + goto err2; + } } route->path_rec->net = &init_net; -- cgit v0.10.2 From 1d5840c971455ad4ecece3f72012961cac8d0f00 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 7 Aug 2016 12:20:38 +0000 Subject: IB/isert: fix error return code in isert_alloc_login_buf() Fix to return error code -ENOMEM from the alloc error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Acked-by: Sagi Grimberg Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index ba6be06..7914c14 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -448,7 +448,7 @@ isert_alloc_login_buf(struct isert_conn *isert_conn, isert_conn->login_rsp_buf = kzalloc(ISER_RX_PAYLOAD_SIZE, GFP_KERNEL); if (!isert_conn->login_rsp_buf) { - isert_err("Unable to allocate isert_conn->login_rspbuf\n"); + ret = -ENOMEM; goto out_unmap_login_req_buf; } -- cgit v0.10.2 From abb658ef0529488cfa75e79a2a9f894cb95eaec3 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 8 Aug 2016 09:49:47 +0000 Subject: IB/hfi1: Remove duplicated include from affinity.c Remove duplicated include. Signed-off-by: Wei Yongjun Reviewed-by: Leon Romanovsky Reviewed-by: Ira Weiny Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index 9bbb214..0566393 100644 --- a/drivers/infiniband/hw/hfi1/affinity.c +++ b/drivers/infiniband/hw/hfi1/affinity.c @@ -47,7 +47,6 @@ #include #include #include -#include #include "hfi.h" #include "affinity.h" -- cgit v0.10.2 From c62fb260a86dde3df5b2905432caa0e9f6898434 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Fri, 12 Aug 2016 11:17:37 -0400 Subject: IB/hfi1,IB/qib: Fix qp_stats sleep with rcu read lock held The qp init function does a kzalloc() while holding the RCU lock that encounters the following warning with a debug kernel when a cat of the qp_stats is done: [ 231.723948] rcu_scheduler_active = 1, debug_locks = 0 [ 231.731939] 3 locks held by cat/11355: [ 231.736492] #0: (debugfs_srcu){......}, at: [] debugfs_use_file_start+0x5/0x90 [ 231.746955] #1: (&p->lock){+.+.+.}, at: [] seq_read+0x4c/0x3c0 [ 231.755873] #2: (rcu_read_lock){......}, at: [] _qp_stats_seq_start+0x5/0xd0 [hfi1] [ 231.766862] The init functions do an implicit next which requires the rcu read lock before the kzalloc(). Fix for both drivers is to change the scope of the init function to only do the allocation and the initialization of the just allocated iter. The implict next is moved back into the respective start functions to fix the issue. Signed-off-by: Ira Weiny Signed-off-by: Mike Marciniszyn CC: # 4.6.x- Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c index dbab9d9..a49cc88 100644 --- a/drivers/infiniband/hw/hfi1/debugfs.c +++ b/drivers/infiniband/hw/hfi1/debugfs.c @@ -223,28 +223,32 @@ DEBUGFS_SEQ_FILE_OPEN(ctx_stats) DEBUGFS_FILE_OPS(ctx_stats); static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos) -__acquires(RCU) + __acquires(RCU) { struct qp_iter *iter; loff_t n = *pos; - rcu_read_lock(); iter = qp_iter_init(s->private); + + /* stop calls rcu_read_unlock */ + rcu_read_lock(); + if (!iter) return NULL; - while (n--) { + do { if (qp_iter_next(iter)) { kfree(iter); return NULL; } - } + } while (n--); return iter; } static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, loff_t *pos) + __must_hold(RCU) { struct qp_iter *iter = iter_ptr; @@ -259,7 +263,7 @@ static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, } static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr) -__releases(RCU) + __releases(RCU) { rcu_read_unlock(); } diff --git a/drivers/infiniband/hw/hfi1/qp.c b/drivers/infiniband/hw/hfi1/qp.c index a5aa351..4e4d831 100644 --- a/drivers/infiniband/hw/hfi1/qp.c +++ b/drivers/infiniband/hw/hfi1/qp.c @@ -656,10 +656,6 @@ struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev) iter->dev = dev; iter->specials = dev->rdi.ibdev.phys_port_cnt * 2; - if (qp_iter_next(iter)) { - kfree(iter); - return NULL; - } return iter; } diff --git a/drivers/infiniband/hw/qib/qib_debugfs.c b/drivers/infiniband/hw/qib/qib_debugfs.c index 5e75b43..5bad8e3 100644 --- a/drivers/infiniband/hw/qib/qib_debugfs.c +++ b/drivers/infiniband/hw/qib/qib_debugfs.c @@ -189,27 +189,32 @@ static int _ctx_stats_seq_show(struct seq_file *s, void *v) DEBUGFS_FILE(ctx_stats) static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos) + __acquires(RCU) { struct qib_qp_iter *iter; loff_t n = *pos; - rcu_read_lock(); iter = qib_qp_iter_init(s->private); + + /* stop calls rcu_read_unlock */ + rcu_read_lock(); + if (!iter) return NULL; - while (n--) { + do { if (qib_qp_iter_next(iter)) { kfree(iter); return NULL; } - } + } while (n--); return iter; } static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, loff_t *pos) + __must_hold(RCU) { struct qib_qp_iter *iter = iter_ptr; @@ -224,6 +229,7 @@ static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, } static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr) + __releases(RCU) { rcu_read_unlock(); } diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c index 9cc0aae..f9b8cd2 100644 --- a/drivers/infiniband/hw/qib/qib_qp.c +++ b/drivers/infiniband/hw/qib/qib_qp.c @@ -573,10 +573,6 @@ struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev) return NULL; iter->dev = dev; - if (qib_qp_iter_next(iter)) { - kfree(iter); - return NULL; - } return iter; } -- cgit v0.10.2 From 140690eae7626a820ea135f33ff9fe11c1bcee6d Mon Sep 17 00:00:00 2001 From: Easwar Hariharan Date: Tue, 9 Aug 2016 11:17:18 -0400 Subject: IB/hfi1: Fetch monitor values on-demand for CableInfo query The monitor values from bytes 22 through 81 of the QSFP memory space (SFF 8636) are dynamic and serving them out of the QSFP memory cache maintained by the driver provides stale data to the CableInfo SMA query. This patch refreshes the dynamic values from the QSFP memory on request and overwrites the stale data from the cache for the overlap between the requested range and the monitor range. Reviewed-by: Jubin John Reviewed-by: Ira Weiny Signed-off-by: Easwar Hariharan Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/qsfp.c b/drivers/infiniband/hw/hfi1/qsfp.c index a207717..4e95ad8 100644 --- a/drivers/infiniband/hw/hfi1/qsfp.c +++ b/drivers/infiniband/hw/hfi1/qsfp.c @@ -706,8 +706,8 @@ int get_cable_info(struct hfi1_devdata *dd, u32 port_num, u32 addr, u32 len, u8 *data) { struct hfi1_pportdata *ppd; - u32 excess_len = 0; - int ret = 0; + u32 excess_len = len; + int ret = 0, offset = 0; if (port_num > dd->num_pports || port_num < 1) { dd_dev_info(dd, "%s: Invalid port number %d\n", @@ -740,6 +740,34 @@ int get_cable_info(struct hfi1_devdata *dd, u32 port_num, u32 addr, u32 len, } memcpy(data, &ppd->qsfp_info.cache[addr], len); + + if (addr <= QSFP_MONITOR_VAL_END && + (addr + len) >= QSFP_MONITOR_VAL_START) { + /* Overlap with the dynamic channel monitor range */ + if (addr < QSFP_MONITOR_VAL_START) { + if (addr + len <= QSFP_MONITOR_VAL_END) + len = addr + len - QSFP_MONITOR_VAL_START; + else + len = QSFP_MONITOR_RANGE; + offset = QSFP_MONITOR_VAL_START - addr; + addr = QSFP_MONITOR_VAL_START; + } else if (addr == QSFP_MONITOR_VAL_START) { + offset = 0; + if (addr + len > QSFP_MONITOR_VAL_END) + len = QSFP_MONITOR_RANGE; + } else { + offset = 0; + if (addr + len > QSFP_MONITOR_VAL_END) + len = QSFP_MONITOR_VAL_END - addr + 1; + } + /* Refresh the values of the dynamic monitors from the cable */ + ret = one_qsfp_read(ppd, dd->hfi1_id, addr, data + offset, len); + if (ret != len) { + ret = -EAGAIN; + goto set_zeroes; + } + } + return 0; set_zeroes: diff --git a/drivers/infiniband/hw/hfi1/qsfp.h b/drivers/infiniband/hw/hfi1/qsfp.h index 69275eb..36cf523 100644 --- a/drivers/infiniband/hw/hfi1/qsfp.h +++ b/drivers/infiniband/hw/hfi1/qsfp.h @@ -74,6 +74,9 @@ /* Defined fields that Intel requires of qualified cables */ /* Byte 0 is Identifier, not checked */ /* Byte 1 is reserved "status MSB" */ +#define QSFP_MONITOR_VAL_START 22 +#define QSFP_MONITOR_VAL_END 81 +#define QSFP_MONITOR_RANGE (QSFP_MONITOR_VAL_END - QSFP_MONITOR_VAL_START + 1) #define QSFP_TX_CTRL_BYTE_OFFS 86 #define QSFP_PWR_CTRL_BYTE_OFFS 93 #define QSFP_CDR_CTRL_BYTE_OFFS 98 -- cgit v0.10.2 From c867caaf8ecd5498d399558d0f11825f175c6cdd Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Tue, 9 Aug 2016 11:19:55 -0400 Subject: IB/hfi1: Pass packet ptr to set_armed_active The "packet" parameter was being passed on the stack, change it to a pointer. Reviewed-by: Don Hiatt Signed-off-by: Mike Marciniszyn Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index 8246dc7..c415687 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -888,14 +888,14 @@ void set_all_slowpath(struct hfi1_devdata *dd) } static inline int set_armed_to_active(struct hfi1_ctxtdata *rcd, - struct hfi1_packet packet, + struct hfi1_packet *packet, struct hfi1_devdata *dd) { struct work_struct *lsaw = &rcd->ppd->linkstate_active_work; - struct hfi1_message_header *hdr = hfi1_get_msgheader(packet.rcd->dd, - packet.rhf_addr); + struct hfi1_message_header *hdr = hfi1_get_msgheader(packet->rcd->dd, + packet->rhf_addr); - if (hdr2sc(hdr, packet.rhf) != 0xf) { + if (hdr2sc(hdr, packet->rhf) != 0xf) { int hwstate = read_logical_state(dd); if (hwstate != LSTATE_ACTIVE) { @@ -979,7 +979,7 @@ int handle_receive_interrupt(struct hfi1_ctxtdata *rcd, int thread) /* Auto activate link on non-SC15 packet receive */ if (unlikely(rcd->ppd->host_link_state == HLS_UP_ARMED) && - set_armed_to_active(rcd, packet, dd)) + set_armed_to_active(rcd, &packet, dd)) goto bail; last = process_rcv_packet(&packet, thread); } -- cgit v0.10.2 From 69b9f4a4233b6f9ea168c25123b9eb629739d8e5 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Tue, 9 Aug 2016 11:19:56 -0400 Subject: IB/hfi1: Validate header in set_armed_active Validate the etype to insure that the header is correct. Reviewed-by: Don Hiatt Signed-off-by: Mike Marciniszyn Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index c415687..303f105 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -894,8 +894,9 @@ static inline int set_armed_to_active(struct hfi1_ctxtdata *rcd, struct work_struct *lsaw = &rcd->ppd->linkstate_active_work; struct hfi1_message_header *hdr = hfi1_get_msgheader(packet->rcd->dd, packet->rhf_addr); + u8 etype = rhf_rcv_type(packet->rhf); - if (hdr2sc(hdr, packet->rhf) != 0xf) { + if (etype == RHF_RCV_TYPE_IB && hdr2sc(hdr, packet->rhf) != 0xf) { int hwstate = read_logical_state(dd); if (hwstate != LSTATE_ACTIVE) { -- cgit v0.10.2 From 476d95bd02240894806ebe64f1c4dcf6dbba87f4 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 10 Aug 2016 03:14:04 +0000 Subject: IB/hfi1: Using kfree_rcu() to simplify the code The callback function of call_rcu() just calls a kfree(), so we can use kfree_rcu() instead of call_rcu() + callback function. Signed-off-by: Wei Yongjun Tested-by: Mike Marciniszyn Acked-by: Mike Marciniszyn Tested-by: Mike Marciniszyn Acked-by: Mike Marciniszyn Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index 1000e0f..f41414e 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1656,7 +1656,6 @@ struct cc_state *get_cc_state_protected(struct hfi1_pportdata *ppd) struct hfi1_devdata *hfi1_init_dd(struct pci_dev *, const struct pci_device_id *); void hfi1_free_devdata(struct hfi1_devdata *); -void cc_state_reclaim(struct rcu_head *rcu); struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra); /* LED beaconing functions */ diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index a358d23..b793545 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -1333,7 +1333,7 @@ static void cleanup_device_data(struct hfi1_devdata *dd) spin_unlock(&ppd->cc_state_lock); if (cc_state) - call_rcu(&cc_state->rcu, cc_state_reclaim); + kfree_rcu(cc_state, rcu); } free_credit_return(dd); diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c index 1263abe..95c43e1 100644 --- a/drivers/infiniband/hw/hfi1/mad.c +++ b/drivers/infiniband/hw/hfi1/mad.c @@ -3398,7 +3398,7 @@ static void apply_cc_state(struct hfi1_pportdata *ppd) spin_unlock(&ppd->cc_state_lock); - call_rcu(&old_cc_state->rcu, cc_state_reclaim); + kfree_rcu(old_cc_state, rcu); } static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data, @@ -3553,13 +3553,6 @@ static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data, return reply((struct ib_mad_hdr *)smp); } -void cc_state_reclaim(struct rcu_head *rcu) -{ - struct cc_state *cc_state = container_of(rcu, struct cc_state, rcu); - - kfree(cc_state); -} - static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data, struct ib_device *ibdev, u8 port, u32 *resp_len) -- cgit v0.10.2 From 57bb562ad4651453c9f20d506a65e46e4d11042f Mon Sep 17 00:00:00 2001 From: Christophe Jaillet Date: Wed, 10 Aug 2016 07:34:27 +0200 Subject: IB/hfi1: Add missing error code assignment before test It is likely that checking the result of 'setup_ctxt' is expected here. Signed-off-by: Christophe JAILLET Acked-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index 1ecbec1..ed76be3 100644 --- a/drivers/infiniband/hw/hfi1/file_ops.c +++ b/drivers/infiniband/hw/hfi1/file_ops.c @@ -222,7 +222,7 @@ static long hfi1_file_ioctl(struct file *fp, unsigned int cmd, ret = assign_ctxt(fp, &uinfo); if (ret < 0) return ret; - setup_ctxt(fp); + ret = setup_ctxt(fp); if (ret) return ret; ret = user_init(fp); -- cgit v0.10.2 From 86cd747c6dd6cdbc825e36ad5f0029f3c5a37776 Mon Sep 17 00:00:00 2001 From: Christophe Jaillet Date: Wed, 10 Aug 2016 17:45:01 +0200 Subject: IB/usnic: Fix error return code If 'pci_register_driver' fails, we return 'err' which is known to be 0. Return the error instead. Signed-off-by: Christophe JAILLET Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c index c229b9f..0a89a95 100644 --- a/drivers/infiniband/hw/usnic/usnic_ib_main.c +++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c @@ -664,7 +664,8 @@ static int __init usnic_ib_init(void) return err; } - if (pci_register_driver(&usnic_ib_pci_driver)) { + err = pci_register_driver(&usnic_ib_pci_driver); + if (err) { usnic_err("Unable to register with PCI\n"); goto out_umem_fini; } -- cgit v0.10.2 From 539d5c48a4aff5a4afcff117418618b49126c54c Mon Sep 17 00:00:00 2001 From: Hugo Grostabussiat Date: Tue, 16 Aug 2016 20:34:07 +0200 Subject: ARM: sun5i: Fix typo in trip point temperature MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Set cpu_alert0 temperature to 85°C instead of 850°C. Fixes: 32a5d2d170cc ("ARM: dts: sun5i: Add cpu thermal zones to dtsi") Signed-off-by: Hugo Grostabussiat Acked-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi index e012890..a17ba02 100644 --- a/arch/arm/boot/dts/sun5i-a13.dtsi +++ b/arch/arm/boot/dts/sun5i-a13.dtsi @@ -84,7 +84,7 @@ trips { cpu_alert0: cpu_alert0 { /* milliCelsius */ - temperature = <850000>; + temperature = <85000>; hysteresis = <2000>; type = "passive"; }; -- cgit v0.10.2 From 701b4bf6e3eeff1a856d6889e1ebb35edd6c019a Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Tue, 16 Aug 2016 12:29:46 +0300 Subject: MAINTAINERS: Fix Soft RoCE location The Soft RoCE (rxe) is located in drivers/inifiniband/sw and not in drivers/infiniband/hw/. This patch fixes it. Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/MAINTAINERS b/MAINTAINERS index 0bbe4b1..fc2613d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7661,7 +7661,7 @@ L: linux-rdma@vger.kernel.org S: Supported W: https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home Q: http://patchwork.kernel.org/project/linux-rdma/list/ -F: drivers/infiniband/hw/rxe/ +F: drivers/infiniband/sw/rxe/ F: include/uapi/rdma/rdma_user_rxe.h MEMBARRIER SUPPORT -- cgit v0.10.2 From f29a08dc145e05de6a57f0aeaba6020464f80e15 Mon Sep 17 00:00:00 2001 From: Easwar Hariharan Date: Tue, 16 Aug 2016 13:25:34 -0700 Subject: IB/hfi1: Return invalid field for non-QSFP CableInfo queries The driver does not check if the CableInfo query is supported for the port type. Return early if CableInfo is not supported for the port type, making compliance with the specification explicit and preventing lower level code from potentially doing the wrong thing if the query is not supported for the hardware implementation. Reviewed-by: Ira Weiny Signed-off-by: Easwar Hariharan Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c index 95c43e1..39e42c3 100644 --- a/drivers/infiniband/hw/hfi1/mad.c +++ b/drivers/infiniband/hw/hfi1/mad.c @@ -1819,6 +1819,11 @@ static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data, u32 len = OPA_AM_CI_LEN(am) + 1; int ret; + if (dd->pport->port_type != PORT_TYPE_QSFP) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + #define __CI_PAGE_SIZE BIT(7) /* 128 bytes */ #define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1) #define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK) -- cgit v0.10.2 From 08fe16f6192bccd5798e9b60461f7aa151b34cd4 Mon Sep 17 00:00:00 2001 From: Mitko Haralanov Date: Tue, 16 Aug 2016 13:26:12 -0700 Subject: IB/hfi1: Improve J_KEY generation Previously, J_KEY generation was based on the lower 16 bits of the user's UID. While this works, it was not good enough as a non-root user could collide with a root user given a sufficiently large UID. This patch attempt to improve the J_KEY generation by using the following algorithm: The 16 bit J_KEY space is partitioned into 3 separate spaces reserved for different user classes: * all users with administtor privileges (including 'root') will use J_KEYs in the range of 0 to 31, * all kernel protocols, which use KDETH packets will use J_KEYs in the range of 32 to 63, and * all other users will use J_KEYs in the range of 64 to 65535. The above separation is aimed at preventing different user levels from sending packets to each other and, additionally, separate kernel protocols from all other types of users. The later is meant to prevent the potential corruption of kernel memory by any other type of user. Reviewed-by: Ira Weiny Signed-off-by: Mitko Haralanov Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index f41414e..a021e66 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1272,9 +1272,26 @@ static inline int hdr2sc(struct hfi1_message_header *hdr, u64 rhf) ((!!(rhf_dc_info(rhf))) << 4); } +#define HFI1_JKEY_WIDTH 16 +#define HFI1_JKEY_MASK (BIT(16) - 1) +#define HFI1_ADMIN_JKEY_RANGE 32 + +/* + * J_KEYs are split and allocated in the following groups: + * 0 - 31 - users with administrator privileges + * 32 - 63 - kernel protocols using KDETH packets + * 64 - 65535 - all other users using KDETH packets + */ static inline u16 generate_jkey(kuid_t uid) { - return from_kuid(current_user_ns(), uid) & 0xffff; + u16 jkey = from_kuid(current_user_ns(), uid) & HFI1_JKEY_MASK; + + if (capable(CAP_SYS_ADMIN)) + jkey &= HFI1_ADMIN_JKEY_RANGE - 1; + else if (jkey < 64) + jkey |= BIT(HFI1_JKEY_WIDTH - 1); + + return jkey; } /* -- cgit v0.10.2 From 56c8ca510de2884b2f741e5fd8d3df6161378de6 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Tue, 16 Aug 2016 13:26:29 -0700 Subject: IB/rdmvat: Fix double vfree() in rvt_create_qp() error path The unwind logic for creating a user QP has a double vfree of the non-shared receive queue when handling a "too many qps" failure. The code unwinds the mmmap info by decrementing a reference count which will call rvt_release_mmap_info() which in turn does the vfree() of the r_rq.wq. The unwind code then does the same free. Fix by guarding the vfree() with the same test that is done in close and only do the vfree() if qp->ip is NULL. Reviewed-by: Dennis Dalessandro Signed-off-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c index bdb540f..870b4f2 100644 --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -873,7 +873,8 @@ bail_qpn: free_qpn(&rdi->qp_dev->qpn_table, qp->ibqp.qp_num); bail_rq_wq: - vfree(qp->r_rq.wq); + if (!qp->ip) + vfree(qp->r_rq.wq); bail_driver_priv: rdi->driver_f.qp_priv_free(rdi, qp); -- cgit v0.10.2 From e0cf75deab8155334c8228eb7f097b15127d0a49 Mon Sep 17 00:00:00 2001 From: Ira Weiny Date: Tue, 16 Aug 2016 13:27:03 -0700 Subject: IB/hfi1: Fix mm_struct use after free Testing with CONFIG_SLUB_DEBUG_ON=y resulted in the kernel panic below. This is the result of the mm_struct sometimes being free'd prior to hfi1_file_close being called. This was due to the combination of 2 reasons: 1) hfi1_file_close is deferred in process exit and it therefore may not be called synchronously with process exit. 2) exit_mm is called prior to exit_files in do_exit. Normally this is ok however, our kernel bypass code requires us to have access to the mm_struct for house keeping both at "normal" close time as well as at process exit. Therefore, the fix is to simply keep a reference to the mm_struct until we are done with it. [ 3006.340150] general protection fault: 0000 [#1] SMP [ 3006.346469] Modules linked in: hfi1 rdmavt rpcrdma ib_isert iscsi_target_mod ib_iser libiscsi scsi_transport_iscsi ib_srpt target_core_mod ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm dm_mirror dm_region_hash dm_log dm_mod snd_hda_code c_realtek iTCO_wdt snd_hda_codec_generic iTCO_vendor_support sb_edac edac_core x86_pkg_temp_thermal intel_powerclamp coretemp kvm irqbypass c rct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel lrw snd_hda_intel gf128mul snd_hda_codec glue_helper snd_hda_core ablk_helper sn d_hwdep cryptd snd_seq snd_seq_device snd_pcm snd_timer snd soundcore pcspkr shpchp mei_me sg lpc_ich mei i2c_i801 mfd_core ioatdma ipmi_devi ntf wmi ipmi_si ipmi_msghandler acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables ext4 jbd2 mbcache mlx4_en ib_core sr_mod s d_mod cdrom crc32c_intel mgag200 drm_kms_helper syscopyarea sysfillrect igb sysimgblt fb_sys_fops ptp mlx4_core ttm isci pps_core ahci drm li bsas libahci dca firewire_ohci i2c_algo_bit scsi_transport_sas firewire_core crc_itu_t i2c_core libata [last unloaded: mlx4_ib] [ 3006.461759] CPU: 16 PID: 11624 Comm: mpi_stress Not tainted 4.7.0-rc5+ #1 [ 3006.469915] Hardware name: Intel Corporation W2600CR ........../W2600CR, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013 [ 3006.483027] task: ffff8804102f0040 ti: ffff8804102f8000 task.ti: ffff8804102f8000 [ 3006.491971] RIP: 0010:[] [] __lock_acquire+0xb3/0x19e0 [ 3006.501905] RSP: 0018:ffff8804102fb908 EFLAGS: 00010002 [ 3006.508447] RAX: 6b6b6b6b6b6b6b6b RBX: 0000000000000001 RCX: 0000000000000000 [ 3006.517012] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff880410b56a40 [ 3006.525569] RBP: ffff8804102fb9b0 R08: 0000000000000001 R09: 0000000000000000 [ 3006.534119] R10: ffff8804102f0040 R11: 0000000000000000 R12: 0000000000000000 [ 3006.542664] R13: ffff880410b56a40 R14: 0000000000000000 R15: 0000000000000000 [ 3006.551203] FS: 00007ff478c08700(0000) GS:ffff88042e200000(0000) knlGS:0000000000000000 [ 3006.560814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3006.567806] CR2: 00007f667f5109e0 CR3: 0000000001c06000 CR4: 00000000000406e0 [ 3006.576352] Stack: [ 3006.579157] ffffffff8124b819 ffffffffffffffff 0000000000000000 ffff8804102fb940 [ 3006.588072] 0000000000000002 0000000000000000 ffff8804102f0040 0000000000000007 [ 3006.596971] 0000000000000006 ffff8803cad6f000 0000000000000000 ffff8804102f0040 [ 3006.605878] Call Trace: [ 3006.609220] [] ? uncharge_batch+0x109/0x250 [ 3006.616382] [] lock_acquire+0xd3/0x220 [ 3006.623056] [] ? hfi1_release_user_pages+0x7c/0xa0 [hfi1] [ 3006.631593] [] down_write+0x49/0x80 [ 3006.638022] [] ? hfi1_release_user_pages+0x7c/0xa0 [hfi1] [ 3006.646569] [] hfi1_release_user_pages+0x7c/0xa0 [hfi1] [ 3006.654898] [] cacheless_tid_rb_remove+0x106/0x330 [hfi1] [ 3006.663417] [] ? mark_held_locks+0x66/0x90 [ 3006.670498] [] ? _raw_spin_unlock_irqrestore+0x36/0x60 [ 3006.678741] [] tid_rb_remove+0xe/0x10 [hfi1] [ 3006.686010] [] hfi1_mmu_rb_unregister+0xc5/0x100 [hfi1] [ 3006.694387] [] hfi1_user_exp_rcv_free+0x39/0x120 [hfi1] [ 3006.702732] [] hfi1_file_close+0x17a/0x330 [hfi1] [ 3006.710489] [] __fput+0xfa/0x230 [ 3006.716595] [] ____fput+0xe/0x10 [ 3006.722696] [] task_work_run+0x86/0xc0 [ 3006.729379] [] do_exit+0x323/0xc40 [ 3006.735672] [] do_group_exit+0x4c/0xc0 [ 3006.742371] [] get_signal+0x345/0x940 [ 3006.748958] [] do_signal+0x37/0x700 [ 3006.755328] [] ? poll_select_set_timeout+0x5a/0x90 [ 3006.763146] [] ? __audit_syscall_exit+0x1db/0x260 [ 3006.770853] [] ? rcu_read_lock_sched_held+0x93/0xa0 [ 3006.778765] [] ? kfree+0x1e4/0x2a0 [ 3006.784986] [] ? exit_to_usermode_loop+0x33/0xac [ 3006.792551] [] exit_to_usermode_loop+0x5e/0xac [ 3006.799907] [] do_syscall_64+0x12a/0x190 [ 3006.806664] [] entry_SYSCALL64_slow_path+0x25/0x25 [ 3006.814396] Code: 24 08 44 89 44 24 10 89 4c 24 18 e8 a8 d8 ff ff 48 85 c0 8b 4c 24 18 44 8b 44 24 10 44 8b 4c 24 08 4c 8b 14 24 0f 84 30 08 00 00 ff 80 98 01 00 00 8b 3d 48 ad be 01 45 8b a2 90 0b 00 00 85 [ 3006.837158] RIP [] __lock_acquire+0xb3/0x19e0 [ 3006.844401] RSP [ 3006.851170] ---[ end trace b7b9f21cf06c27df ]--- [ 3006.927420] Kernel panic - not syncing: Fatal exception [ 3006.933954] Kernel Offset: disabled [ 3006.940961] ---[ end Kernel panic - not syncing: Fatal exception [ 3006.948249] ------------[ cut here ]------------ Fixes: 3faa3d9a308e ("IB/hfi1: Make use of mm consistent") Reviewed-by: Dean Luick Signed-off-by: Ira Weiny Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index ed76be3..7e03ccd 100644 --- a/drivers/infiniband/hw/hfi1/file_ops.c +++ b/drivers/infiniband/hw/hfi1/file_ops.c @@ -183,6 +183,7 @@ static int hfi1_file_open(struct inode *inode, struct file *fp) if (fd) { fd->rec_cpu_num = -1; /* no cpu affinity by default */ fd->mm = current->mm; + atomic_inc(&fd->mm->mm_count); } fp->private_data = fd; @@ -779,6 +780,7 @@ static int hfi1_file_close(struct inode *inode, struct file *fp) mutex_unlock(&hfi1_mutex); hfi1_free_ctxtdata(dd, uctxt); done: + mmdrop(fdata->mm); kobject_put(&dd->kobj); kfree(fdata); return 0; -- cgit v0.10.2 From 7f446abf12d741f4e29f00c633cb5fa67c2eee71 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Fri, 19 Aug 2016 07:29:07 -0700 Subject: iw_cxgb4: limit IRD/ORD advertised to ULP by device max. The i40iw initiator sends an MPA-request with ird = 63, ord = 63. The cxgb4 responder sends a RST. Since the inbound ord=63 and it exceeds the max_ird/c4iw_max_read_depth (=32 default), chelsio decides to abort. Instead, cxgb4 should adjust the ord/ird down before presenting it to the ULP. Reported-by: Shiraz Saleem Signed-off-by: Steve Wise Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 3aca7f6..a698efc 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -1827,8 +1827,12 @@ static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) (ep->mpa_pkt + sizeof(*mpa)); ep->ird = ntohs(mpa_v2_params->ird) & MPA_V2_IRD_ORD_MASK; + ep->ird = min_t(u32, ep->ird, + cur_max_read_depth(ep->com.dev)); ep->ord = ntohs(mpa_v2_params->ord) & MPA_V2_IRD_ORD_MASK; + ep->ord = min_t(u32, ep->ord, + cur_max_read_depth(ep->com.dev)); PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, ep->ord); if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) -- cgit v0.10.2 From 30b03b1528b60623986ee0b50ec0e5dab9094be8 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Fri, 19 Aug 2016 07:29:08 -0700 Subject: iw_cxgb4: use the MPA initiator's IRD if < our ORD The i40iw initiator sends an MPA-request with ird=16 and ord=16. The cxgb4 responder sends an MPA-reply with ord = 32 causing i40iw to terminate due to insufficient resources. The logic to reduce the ORD to <= peer's IRD was wrong. Reported-by: Shiraz Saleem Signed-off-by: Steve Wise Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index a698efc..b6a953a 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -3140,7 +3140,7 @@ int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { if (conn_param->ord > ep->ird) { if (RELAXED_IRD_NEGOTIATION) { - ep->ord = ep->ird; + conn_param->ord = ep->ird; } else { ep->ird = conn_param->ird; ep->ord = conn_param->ord; -- cgit v0.10.2 From 5cab4d84780573afbf5077ae9c3f919b4f305f20 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 22 Aug 2016 13:49:59 -0700 Subject: Input: silead - use devm_gpiod_get The silead code is using devm_foo for everything (and does not free any resources). Except that it is using gpiod_get instead of devm_gpiod_get (but is not freeing the gpio_desc), change this to use devm_gpiod_get so that the gpio will be properly released. Signed-off-by: Hans de Goede Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c index 7379fe1..b2744a6 100644 --- a/drivers/input/touchscreen/silead.c +++ b/drivers/input/touchscreen/silead.c @@ -464,7 +464,7 @@ static int silead_ts_probe(struct i2c_client *client, return -ENODEV; /* Power GPIO pin */ - data->gpio_power = gpiod_get_optional(dev, "power", GPIOD_OUT_LOW); + data->gpio_power = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW); if (IS_ERR(data->gpio_power)) { if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER) dev_err(dev, "Shutdown GPIO request failed\n"); -- cgit v0.10.2 From fae16989be77b09bab86c79233e4b511ea769cea Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Mon, 22 Aug 2016 13:25:56 -0700 Subject: Input: tegra-kbc - fix inverted reset logic Commit fe6b0dfaba68 ("Input: tegra-kbc - use reset framework") accidentally converted _deassert to _assert, so there is no code to wake up this hardware. Fixes: fe6b0dfaba68 ("Input: tegra-kbc - use reset framework") Signed-off-by: Masahiro Yamada Acked-by: Thierry Reding Acked-by: Laxman Dewangan Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c index 7d61439..0c07e10 100644 --- a/drivers/input/keyboard/tegra-kbc.c +++ b/drivers/input/keyboard/tegra-kbc.c @@ -376,7 +376,7 @@ static int tegra_kbc_start(struct tegra_kbc *kbc) /* Reset the KBC controller to clear all previous status.*/ reset_control_assert(kbc->rst); udelay(100); - reset_control_assert(kbc->rst); + reset_control_deassert(kbc->rst); udelay(100); tegra_kbc_config_pins(kbc); -- cgit v0.10.2 From 3e29d6bb6433ebfa4e187b1164b80baf720d58c3 Mon Sep 17 00:00:00 2001 From: Andrew Duggan Date: Mon, 22 Aug 2016 11:28:11 -0700 Subject: Input: synaptics-rmi4 - fix register descriptor subpacket map construction The map_offset variable is specific to the register and needs to be reset in the loop. Otherwise, subsequent register's subpacket maps will have their bits set at the wrong index. Signed-off-by: Andrew Duggan Tested-by: Nitin Chaudhary Reviewed-by: Benjamin Tissoires Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index faa295e..c83bce8 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -553,7 +553,6 @@ int rmi_read_register_desc(struct rmi_device *d, u16 addr, goto free_struct_buff; reg = find_first_bit(rdesc->presense_map, RMI_REG_DESC_PRESENSE_BITS); - map_offset = 0; for (i = 0; i < rdesc->num_registers; i++) { struct rmi_register_desc_item *item = &rdesc->registers[i]; int reg_size = struct_buf[offset]; @@ -576,6 +575,8 @@ int rmi_read_register_desc(struct rmi_device *d, u16 addr, item->reg = reg; item->reg_size = reg_size; + map_offset = 0; + do { for (b = 0; b < 7; b++) { if (struct_buf[offset] & (0x1 << b)) -- cgit v0.10.2 From e3a888a4bff0bef0b256d55c58bc32c99fb44ece Mon Sep 17 00:00:00 2001 From: Petr Cvek Date: Fri, 19 Aug 2016 10:14:29 -0700 Subject: Input: ads7846 - remove redundant regulator_disable call ADS7846 regulator is disabled twice in a row in ads7846_remove(). Valid one is in ads7846_disable(). Removing the ads7846 module causes warning about unbalanced disables. ... WARNING: CPU: 0 PID: 29269 at drivers/regulator/core.c:2251 _regulator_disable+0xf8/0x130 unbalanced disables for vads7846 CPU: 0 PID: 29269 Comm: rmmod Tainted: G D W 4.7.0+ #3 Hardware name: HTC Magician ... show_stack+0x10/0x14 __warn+0xd8/0x100 warn_slowpath_fmt+0x38/0x48 _regulator_disable+0xf8/0x130 regulator_disable+0x34/0x60 ads7846_remove+0x58/0xd4 [ads7846] spi_drv_remove+0x1c/0x34 __device_release_driver+0x84/0x114 driver_detach+0x8c/0x90 bus_remove_driver+0x5c/0xc8 SyS_delete_module+0x1a0/0x238 ret_fast_syscall+0x0/0x38 Signed-off-by: Petr Cvek Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index a61b215..1ce3ecb 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -1473,7 +1473,6 @@ static int ads7846_remove(struct spi_device *spi) ads784x_hwmon_unregister(spi, ts); - regulator_disable(ts->reg); regulator_put(ts->reg); if (!ts->get_pendown_state) { -- cgit v0.10.2 From b47b0cc73032d3c8225b5ea9a077941632f16d91 Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:32:38 +0200 Subject: include/uapi/linux/if_pppox.h: include linux/if.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes userspace compilation error: error: ‘IFNAMSIZ’ undeclared here (not in a function) Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/if_pppox.h b/include/uapi/linux/if_pppox.h index e128769..473c3c4 100644 --- a/include/uapi/linux/if_pppox.h +++ b/include/uapi/linux/if_pppox.h @@ -21,6 +21,7 @@ #include #include +#include #include #include -- cgit v0.10.2 From 1fe8e0f074c77aa41aaa579345a9e675acbebfa9 Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:32:39 +0200 Subject: include/uapi/linux/if_tunnel.h: include linux/if.h, linux/ip.h and linux/in6.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes userspace compilation errors like: error: field ‘iph’ has incomplete type error: field ‘prefix’ has incomplete type Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/if_tunnel.h b/include/uapi/linux/if_tunnel.h index 1046f55..777b6cd 100644 --- a/include/uapi/linux/if_tunnel.h +++ b/include/uapi/linux/if_tunnel.h @@ -2,6 +2,9 @@ #define _UAPI_IF_TUNNEL_H_ #include +#include +#include +#include #include -- cgit v0.10.2 From 05ee5de7451796cf9a8aeb2f05a57790d4fd2336 Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:32:42 +0200 Subject: include/uapi/linux/if_pppol2tp.h: include linux/in.h and linux/in6.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes userspace compilation errors like: error: field ‘addr’ has incomplete type struct sockaddr_in addr; /* IP address and port to send to */ ^ error: field ‘addr’ has incomplete type struct sockaddr_in6 addr; /* IP address and port to send to */ Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/if_pppol2tp.h b/include/uapi/linux/if_pppol2tp.h index 163e8ad..4bd1f55 100644 --- a/include/uapi/linux/if_pppol2tp.h +++ b/include/uapi/linux/if_pppol2tp.h @@ -16,7 +16,8 @@ #define _UAPI__LINUX_IF_PPPOL2TP_H #include - +#include +#include /* Structure used to connect() the socket to a particular tunnel UDP * socket over IPv4. -- cgit v0.10.2 From eafe92114308acf14e45c6c3d154a5dad5523d1a Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:32:43 +0200 Subject: include/uapi/linux/if_pppox.h: include linux/in.h and linux/in6.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes userspace compilation errors: error: field ‘addr’ has incomplete type struct sockaddr_in addr; /* IP address and port to send to */ error: field ‘addr’ has incomplete type struct sockaddr_in6 addr; /* IP address and port to send to */ Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/if_pppox.h b/include/uapi/linux/if_pppox.h index 473c3c4..d37bbb1 100644 --- a/include/uapi/linux/if_pppox.h +++ b/include/uapi/linux/if_pppox.h @@ -24,6 +24,8 @@ #include #include #include +#include +#include /* For user-space programs to pick up these definitions * which they wouldn't get otherwise without defining __KERNEL__ -- cgit v0.10.2 From e6571aa5cb65ff52a87843652d0d8120a48aae7c Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:32:55 +0200 Subject: include/uapi/linux/openvswitch.h: use __u32 from linux/types.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes userspace compiler error: error: unknown type name ‘uint32_t’ Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index d95a301..645499a 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -632,8 +632,8 @@ enum ovs_hash_alg { * @hash_basis: basis used for computing hash. */ struct ovs_action_hash { - uint32_t hash_alg; /* One of ovs_hash_alg. */ - uint32_t hash_basis; + __u32 hash_alg; /* One of ovs_hash_alg. */ + __u32 hash_basis; }; /** -- cgit v0.10.2 From cf00713a655d3019be7faa184402f16c43a0fed3 Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:32:58 +0200 Subject: include/uapi/linux/atm_zatm.h: include linux/time.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes userspace compile error: error: field ‘real’ has incomplete type struct timeval real; /* real (wall-clock) time */ Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/atm_zatm.h b/include/uapi/linux/atm_zatm.h index 9c9c6ad..5cd4d4d 100644 --- a/include/uapi/linux/atm_zatm.h +++ b/include/uapi/linux/atm_zatm.h @@ -14,6 +14,7 @@ #include #include +#include #define ZATM_GETPOOL _IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc) /* get pool statistics */ -- cgit v0.10.2 From a1d1f65ff5ac27276a585b41a619d30995bb92fe Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:33:19 +0200 Subject: include/uapi/linux/openvswitch.h: use __u32 from linux/types.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Kernel uapi header are supposed to use them. Fixes userspace compile error: linux/openvswitch.h:583:2: error: unknown type name ‘uint32_t’ Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index 645499a..54c3b4f 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -583,7 +583,7 @@ enum ovs_userspace_attr { #define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1) struct ovs_action_trunc { - uint32_t max_len; /* Max packet size in bytes. */ + __u32 max_len; /* Max packet size in bytes. */ }; /** -- cgit v0.10.2 From 53dc65d4d33c422d086c9d9ad8c03ab400ffc0a1 Mon Sep 17 00:00:00 2001 From: Mikko Rapeli Date: Mon, 22 Aug 2016 20:33:21 +0200 Subject: include/uapi/linux/ipx.h: fix conflicting defitions with glibc netipx/ipx.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes these compiler warnings via libc-compat.h when glibc netipx/ipx.h is included before linux/ipx.h: ./linux/ipx.h:9:8: error: redefinition of ‘struct sockaddr_ipx’ ./linux/ipx.h:26:8: error: redefinition of ‘struct ipx_route_definition’ ./linux/ipx.h:32:8: error: redefinition of ‘struct ipx_interface_definition’ ./linux/ipx.h:49:8: error: redefinition of ‘struct ipx_config_data’ ./linux/ipx.h:58:8: error: redefinition of ‘struct ipx_route_def’ Signed-off-by: Mikko Rapeli Signed-off-by: David S. Miller diff --git a/include/uapi/linux/ipx.h b/include/uapi/linux/ipx.h index 3d48014..30f031d 100644 --- a/include/uapi/linux/ipx.h +++ b/include/uapi/linux/ipx.h @@ -1,11 +1,13 @@ #ifndef _IPX_H_ #define _IPX_H_ +#include /* for compatibility with glibc netipx/ipx.h */ #include #include #include #define IPX_NODE_LEN 6 #define IPX_MTU 576 +#if __UAPI_DEF_SOCKADDR_IPX struct sockaddr_ipx { __kernel_sa_family_t sipx_family; __be16 sipx_port; @@ -14,6 +16,7 @@ struct sockaddr_ipx { __u8 sipx_type; unsigned char sipx_zero; /* 16 byte fill */ }; +#endif /* __UAPI_DEF_SOCKADDR_IPX */ /* * So we can fit the extra info for SIOCSIFADDR into the address nicely @@ -23,12 +26,15 @@ struct sockaddr_ipx { #define IPX_DLTITF 0 #define IPX_CRTITF 1 +#if __UAPI_DEF_IPX_ROUTE_DEFINITION struct ipx_route_definition { __be32 ipx_network; __be32 ipx_router_network; unsigned char ipx_router_node[IPX_NODE_LEN]; }; +#endif /* __UAPI_DEF_IPX_ROUTE_DEFINITION */ +#if __UAPI_DEF_IPX_INTERFACE_DEFINITION struct ipx_interface_definition { __be32 ipx_network; unsigned char ipx_device[16]; @@ -45,16 +51,20 @@ struct ipx_interface_definition { #define IPX_INTERNAL 2 unsigned char ipx_node[IPX_NODE_LEN]; }; - +#endif /* __UAPI_DEF_IPX_INTERFACE_DEFINITION */ + +#if __UAPI_DEF_IPX_CONFIG_DATA struct ipx_config_data { unsigned char ipxcfg_auto_select_primary; unsigned char ipxcfg_auto_create_interfaces; }; +#endif /* __UAPI_DEF_IPX_CONFIG_DATA */ /* * OLD Route Definition for backward compatibility. */ +#if __UAPI_DEF_IPX_ROUTE_DEF struct ipx_route_def { __be32 ipx_network; __be32 ipx_router_network; @@ -67,6 +77,7 @@ struct ipx_route_def { #define IPX_RT_BLUEBOOK 2 #define IPX_RT_ROUTED 1 }; +#endif /* __UAPI_DEF_IPX_ROUTE_DEF */ #define SIOCAIPXITFCRT (SIOCPROTOPRIVATE) #define SIOCAIPXPRISLT (SIOCPROTOPRIVATE + 1) diff --git a/include/uapi/linux/libc-compat.h b/include/uapi/linux/libc-compat.h index e4f048e..44b8a6b 100644 --- a/include/uapi/linux/libc-compat.h +++ b/include/uapi/linux/libc-compat.h @@ -139,6 +139,25 @@ #endif /* _NETINET_IN_H */ +/* Coordinate with glibc netipx/ipx.h header. */ +#if defined(__NETIPX_IPX_H) + +#define __UAPI_DEF_SOCKADDR_IPX 0 +#define __UAPI_DEF_IPX_ROUTE_DEFINITION 0 +#define __UAPI_DEF_IPX_INTERFACE_DEFINITION 0 +#define __UAPI_DEF_IPX_CONFIG_DATA 0 +#define __UAPI_DEF_IPX_ROUTE_DEF 0 + +#else /* defined(__NETIPX_IPX_H) */ + +#define __UAPI_DEF_SOCKADDR_IPX 1 +#define __UAPI_DEF_IPX_ROUTE_DEFINITION 1 +#define __UAPI_DEF_IPX_INTERFACE_DEFINITION 1 +#define __UAPI_DEF_IPX_CONFIG_DATA 1 +#define __UAPI_DEF_IPX_ROUTE_DEF 1 + +#endif /* defined(__NETIPX_IPX_H) */ + /* Definitions for xattr.h */ #if defined(_SYS_XATTR_H) #define __UAPI_DEF_XATTR 0 @@ -179,6 +198,13 @@ #define __UAPI_DEF_IN6_PKTINFO 1 #define __UAPI_DEF_IP6_MTUINFO 1 +/* Definitions for ipx.h */ +#define __UAPI_DEF_SOCKADDR_IPX 1 +#define __UAPI_DEF_IPX_ROUTE_DEFINITION 1 +#define __UAPI_DEF_IPX_INTERFACE_DEFINITION 1 +#define __UAPI_DEF_IPX_CONFIG_DATA 1 +#define __UAPI_DEF_IPX_ROUTE_DEF 1 + /* Definitions for xattr.h */ #define __UAPI_DEF_XATTR 1 -- cgit v0.10.2 From 85b51b12115c79cce7ea1ced6c0bd0339a165d3f Mon Sep 17 00:00:00 2001 From: Mike Manning Date: Thu, 18 Aug 2016 14:39:40 +0100 Subject: net: ipv6: Remove addresses for failures with strict DAD If DAD fails with accept_dad set to 2, global addresses and host routes are incorrectly left in place. Even though disable_ipv6 is set, contrary to documentation, the addresses are not dynamically deleted from the interface. It is only on a subsequent link down/up that these are removed. The fix is not only to set the disable_ipv6 flag, but also to call addrconf_ifdown(), which is the action to carry out when disabling IPv6. This results in the addresses and routes being deleted immediately. The DAD failure for the LL addr is determined as before via netlink, or by the absence of the LL addr (which also previously would have had to be checked for in case of an intervening link down and up). As the call to addrconf_ifdown() requires an rtnl lock, the logic to disable IPv6 when DAD fails is moved to addrconf_dad_work(). Previous behavior: root@vm1:/# sysctl net.ipv6.conf.eth3.accept_dad=2 net.ipv6.conf.eth3.accept_dad = 2 root@vm1:/# ip -6 addr add 2000::10/64 dev eth3 root@vm1:/# ip link set up eth3 root@vm1:/# ip -6 addr show dev eth3 5: eth3: mtu 1500 qlen 1000 inet6 2000::10/64 scope global valid_lft forever preferred_lft forever inet6 fe80::5054:ff:fe43:dd5a/64 scope link tentative dadfailed valid_lft forever preferred_lft forever root@vm1:/# ip -6 route show dev eth3 2000::/64 proto kernel metric 256 fe80::/64 proto kernel metric 256 root@vm1:/# ip link set down eth3 root@vm1:/# ip link set up eth3 root@vm1:/# ip -6 addr show dev eth3 root@vm1:/# ip -6 route show dev eth3 root@vm1:/# New behavior: root@vm1:/# sysctl net.ipv6.conf.eth3.accept_dad=2 net.ipv6.conf.eth3.accept_dad = 2 root@vm1:/# ip -6 addr add 2000::10/64 dev eth3 root@vm1:/# ip link set up eth3 root@vm1:/# ip -6 addr show dev eth3 root@vm1:/# ip -6 route show dev eth3 root@vm1:/# Signed-off-by: Mike Manning Signed-off-by: David S. Miller diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index df8425f..f418d2e 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1872,7 +1872,6 @@ static int addrconf_dad_end(struct inet6_ifaddr *ifp) void addrconf_dad_failure(struct inet6_ifaddr *ifp) { - struct in6_addr addr; struct inet6_dev *idev = ifp->idev; struct net *net = dev_net(ifp->idev->dev); @@ -1934,18 +1933,6 @@ void addrconf_dad_failure(struct inet6_ifaddr *ifp) in6_ifa_put(ifp2); lock_errdad: spin_lock_bh(&ifp->lock); - } else if (idev->cnf.accept_dad > 1 && !idev->cnf.disable_ipv6) { - addr.s6_addr32[0] = htonl(0xfe800000); - addr.s6_addr32[1] = 0; - - if (!ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) && - ipv6_addr_equal(&ifp->addr, &addr)) { - /* DAD failed for link-local based on MAC address */ - idev->cnf.disable_ipv6 = 1; - - pr_info("%s: IPv6 being disabled!\n", - ifp->idev->dev->name); - } } errdad: @@ -3821,6 +3808,7 @@ static void addrconf_dad_work(struct work_struct *w) dad_work); struct inet6_dev *idev = ifp->idev; struct in6_addr mcaddr; + bool disable_ipv6 = false; enum { DAD_PROCESS, @@ -3837,6 +3825,24 @@ static void addrconf_dad_work(struct work_struct *w) } else if (ifp->state == INET6_IFADDR_STATE_ERRDAD) { action = DAD_ABORT; ifp->state = INET6_IFADDR_STATE_POSTDAD; + + if (idev->cnf.accept_dad > 1 && !idev->cnf.disable_ipv6 && + !(ifp->flags & IFA_F_STABLE_PRIVACY)) { + struct in6_addr addr; + + addr.s6_addr32[0] = htonl(0xfe800000); + addr.s6_addr32[1] = 0; + + if (!ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) && + ipv6_addr_equal(&ifp->addr, &addr)) { + /* DAD failed for link-local based on MAC */ + idev->cnf.disable_ipv6 = 1; + + pr_info("%s: IPv6 being disabled!\n", + ifp->idev->dev->name); + disable_ipv6 = true; + } + } } spin_unlock_bh(&ifp->lock); @@ -3845,6 +3851,8 @@ static void addrconf_dad_work(struct work_struct *w) goto out; } else if (action == DAD_ABORT) { addrconf_dad_stop(ifp, 1); + if (disable_ipv6) + addrconf_ifdown(idev->dev, 0); goto out; } -- cgit v0.10.2 From c0451fe1f27b815b3f400df2a63b9aecf589b7b0 Mon Sep 17 00:00:00 2001 From: Shmulik Ladkani Date: Sun, 21 Aug 2016 11:22:32 +0300 Subject: net: ip_finish_output_gso: Allow fragmenting segments of tunneled skbs if their DF is unset In b8247f095e, "net: ip_finish_output_gso: If skb_gso_network_seglen exceeds MTU, allow segmentation for local udp tunneled skbs" gso skbs arriving from an ingress interface that go through UDP tunneling, are allowed to be fragmented if the resulting encapulated segments exceed the dst mtu of the egress interface. This aligned the behavior of gso skbs to non-gso skbs going through udp encapsulation path. However the non-gso vs gso anomaly is present also in the following cases of a GRE tunnel: - ip_gre in collect_md mode, where TUNNEL_DONT_FRAGMENT is not set (e.g. OvS vport-gre with df_default=false) - ip_gre in nopmtudisc mode, where IFLA_GRE_IGNORE_DF is set In both of the above cases, the non-gso skbs get fragmented, whereas the gso skbs (having skb_gso_network_seglen that exceeds dst mtu) get dropped, as they don't go through the segment+fragment code path. Fix: Setting IPSKB_FRAG_SEGS if the tunnel specified IP_DF bit is NOT set. Tunnels that do set IP_DF, will not go to fragmentation of segments. This preserves behavior of ip_gre in (the default) pmtudisc mode. Fixes: b8247f095e ("net: ip_finish_output_gso: If skb_gso_network_seglen exceeds MTU, allow segmentation for local udp tunneled skbs") Reported-by: wenxu Cc: Hannes Frederic Sowa Signed-off-by: Shmulik Ladkani Tested-by: wenxu Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index 9d847c3..0f227db 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -73,9 +73,11 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb, skb_dst_set(skb, &rt->dst); memset(IPCB(skb), 0, sizeof(*IPCB(skb))); - if (skb_iif && proto == IPPROTO_UDP) { - /* Arrived from an ingress interface and got udp encapuslated. - * The encapsulated network segment length may exceed dst mtu. + if (skb_iif && !(df & htons(IP_DF))) { + /* Arrived from an ingress interface, got encapsulated, with + * fragmentation of encapulating frames allowed. + * If skb is gso, the resulting encapsulated network segments + * may exceed dst mtu. * Allow IP Fragmentation of segments. */ IPCB(skb)->flags |= IPSKB_FRAG_SEGS; -- cgit v0.10.2 From 4870e704d901602e4ae5de462c4e65732cf2ed6c Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Mon, 22 Aug 2016 12:03:29 +0300 Subject: qed: FLR of active VFs might lead to FW assert Driver never bothered marking the VF's vport with the VF's sw_fid. As a result, FLR flows are not going to clean those vports. If the vport was active when FLRed, re-activating it would lead to a FW assertion. Fixes: dacd88d6f6851 ("qed: IOV l2 functionality") Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h index 35e5377..45ab746 100644 --- a/drivers/net/ethernet/qlogic/qed/qed.h +++ b/drivers/net/ethernet/qlogic/qed/qed.h @@ -561,9 +561,18 @@ struct qed_dev { static inline u8 qed_concrete_to_sw_fid(struct qed_dev *cdev, u32 concrete_fid) { + u8 vfid = GET_FIELD(concrete_fid, PXP_CONCRETE_FID_VFID); u8 pfid = GET_FIELD(concrete_fid, PXP_CONCRETE_FID_PFID); + u8 vf_valid = GET_FIELD(concrete_fid, + PXP_CONCRETE_FID_VFVALID); + u8 sw_fid; - return pfid; + if (vf_valid) + sw_fid = vfid + MAX_NUM_PFS; + else + sw_fid = pfid; + + return sw_fid; } #define PURE_LB_TC 8 -- cgit v0.10.2 From 7329a655875a2f4bd6984fe8a7e00a6981e802f3 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Fri, 19 Aug 2016 12:15:22 -0700 Subject: usercopy: avoid potentially undefined behavior in pointer math check_bogus_address() checked for pointer overflow using this expression, where 'ptr' has type 'const void *': ptr + n < ptr Since pointer wraparound is undefined behavior, gcc at -O2 by default treats it like the following, which would not behave as intended: (long)n < 0 Fortunately, this doesn't currently happen for kernel code because kernel code is compiled with -fno-strict-overflow. But the expression should be fixed anyway to use well-defined integer arithmetic, since it could be treated differently by different compilers in the future or could be reported by tools checking for undefined behavior. Signed-off-by: Eric Biggers Signed-off-by: Kees Cook diff --git a/mm/usercopy.c b/mm/usercopy.c index 8ebae91..82f81df 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -124,7 +124,7 @@ static inline const char *check_kernel_text_object(const void *ptr, static inline const char *check_bogus_address(const void *ptr, unsigned long n) { /* Reject if object wraps past end of memory. */ - if (ptr + n < ptr) + if ((unsigned long)ptr + n < (unsigned long)ptr) return ""; /* Reject if NULL or ZERO-allocation. */ -- cgit v0.10.2 From 94cd97af690dd9537818dc9841d0ec68bb1dd877 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Mon, 22 Aug 2016 11:53:59 -0500 Subject: usercopy: fix overlap check for kernel text When running with a local patch which moves the '_stext' symbol to the very beginning of the kernel text area, I got the following panic with CONFIG_HARDENED_USERCOPY: usercopy: kernel memory exposure attempt detected from ffff88103dfff000 () (4096 bytes) ------------[ cut here ]------------ kernel BUG at mm/usercopy.c:79! invalid opcode: 0000 [#1] SMP ... CPU: 0 PID: 4800 Comm: cp Not tainted 4.8.0-rc3.after+ #1 Hardware name: Dell Inc. PowerEdge R720/0X3D66, BIOS 2.5.4 01/22/2016 task: ffff880817444140 task.stack: ffff880816274000 RIP: 0010:[] __check_object_size+0x76/0x413 RSP: 0018:ffff880816277c40 EFLAGS: 00010246 RAX: 000000000000006b RBX: ffff88103dfff000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88081f80dfa8 RDI: ffff88081f80dfa8 RBP: ffff880816277c90 R08: 000000000000054c R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000006 R12: 0000000000001000 R13: ffff88103e000000 R14: ffff88103dffffff R15: 0000000000000001 FS: 00007fb9d1750800(0000) GS:ffff88081f800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000021d2000 CR3: 000000081a08f000 CR4: 00000000001406f0 Stack: ffff880816277cc8 0000000000010000 000000043de07000 0000000000000000 0000000000001000 ffff880816277e60 0000000000001000 ffff880816277e28 000000000000c000 0000000000001000 ffff880816277ce8 ffffffff8136c3a6 Call Trace: [] copy_page_to_iter_iovec+0xa6/0x1c0 [] copy_page_to_iter+0x16/0x90 [] generic_file_read_iter+0x3e3/0x7c0 [] ? xfs_file_buffered_aio_write+0xad/0x260 [xfs] [] ? down_read+0x12/0x40 [] xfs_file_buffered_aio_read+0x51/0xc0 [xfs] [] xfs_file_read_iter+0x62/0xb0 [xfs] [] __vfs_read+0xdf/0x130 [] vfs_read+0x8e/0x140 [] SyS_read+0x55/0xc0 [] do_syscall_64+0x67/0x160 [] entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:[<00007fb9d0c33c00>] 0x7fb9d0c33c00 RSP: 002b:00007ffc9c262f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: fffffffffff8ffff RCX: 00007fb9d0c33c00 RDX: 0000000000010000 RSI: 00000000021c3000 RDI: 0000000000000004 RBP: 00000000021c3000 R08: 0000000000000000 R09: 00007ffc9c264d6c R10: 00007ffc9c262c50 R11: 0000000000000246 R12: 0000000000010000 R13: 00007ffc9c2630b0 R14: 0000000000000004 R15: 0000000000010000 Code: 81 48 0f 44 d0 48 c7 c6 90 4d a3 81 48 c7 c0 bb b3 a2 81 48 0f 44 f0 4d 89 e1 48 89 d9 48 c7 c7 68 16 a3 81 31 c0 e8 f4 57 f7 ff <0f> 0b 48 8d 90 00 40 00 00 48 39 d3 0f 83 22 01 00 00 48 39 c3 RIP [] __check_object_size+0x76/0x413 RSP The checked object's range [ffff88103dfff000, ffff88103e000000) is valid, so there shouldn't have been a BUG. The hardened usercopy code got confused because the range's ending address is the same as the kernel's text starting address at 0xffff88103e000000. The overlap check is slightly off. Fixes: f5509cc18daa ("mm: Hardened usercopy") Signed-off-by: Josh Poimboeuf Signed-off-by: Kees Cook diff --git a/mm/usercopy.c b/mm/usercopy.c index 82f81df..a3cc305 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -83,7 +83,7 @@ static bool overlaps(const void *ptr, unsigned long n, unsigned long low, unsigned long check_high = check_low + n; /* Does not overlap if entirely above or entirely below. */ - if (check_low >= high || check_high < low) + if (check_low >= high || check_high <= low) return false; return true; -- cgit v0.10.2 From 28a10c426e81afc88514bca8e73affccf850fdf6 Mon Sep 17 00:00:00 2001 From: Jamal Hadi Salim Date: Mon, 22 Aug 2016 07:10:20 -0400 Subject: net sched: fix encoding to use real length Encoding of the metadata was using the padded length as opposed to the real length of the data which is a bug per specification. This has not been an issue todate because all metadatum specified so far has been 32 bit where aligned and data length are the same width. This also includes a bug fix for validating the length of a u16 field. But since there is no metadata of size u16 yes we are fine to include it here. While at it get rid of magic numbers. Fixes: ef6980b6becb ("net sched: introduce IFE action") Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c index 141a06e..e87cd81 100644 --- a/net/sched/act_ife.c +++ b/net/sched/act_ife.c @@ -53,7 +53,7 @@ int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen, const void *dval) u32 *tlv = (u32 *)(skbdata); u16 totlen = nla_total_size(dlen); /*alignment + hdr */ char *dptr = (char *)tlv + NLA_HDRLEN; - u32 htlv = attrtype << 16 | totlen; + u32 htlv = attrtype << 16 | dlen; *tlv = htonl(htlv); memset(dptr, 0, totlen - NLA_HDRLEN); @@ -135,7 +135,7 @@ EXPORT_SYMBOL_GPL(ife_release_meta_gen); int ife_validate_meta_u32(void *val, int len) { - if (len == 4) + if (len == sizeof(u32)) return 0; return -EINVAL; @@ -144,8 +144,8 @@ EXPORT_SYMBOL_GPL(ife_validate_meta_u32); int ife_validate_meta_u16(void *val, int len) { - /* length will include padding */ - if (len == NLA_ALIGN(2)) + /* length will not include padding */ + if (len == sizeof(u16)) return 0; return -EINVAL; @@ -652,12 +652,14 @@ static int tcf_ife_decode(struct sk_buff *skb, const struct tc_action *a, u8 *tlvdata = (u8 *)tlv; u16 mtype = tlv->type; u16 mlen = tlv->len; + u16 alen; mtype = ntohs(mtype); mlen = ntohs(mlen); + alen = NLA_ALIGN(mlen); - if (find_decode_metaid(skb, ife, mtype, (mlen - 4), - (void *)(tlvdata + 4))) { + if (find_decode_metaid(skb, ife, mtype, (mlen - NLA_HDRLEN), + (void *)(tlvdata + NLA_HDRLEN))) { /* abuse overlimits to count when we receive metadata * but dont have an ops for it */ @@ -666,8 +668,8 @@ static int tcf_ife_decode(struct sk_buff *skb, const struct tc_action *a, ife->tcf_qstats.overlimits++; } - tlvdata += mlen; - ifehdrln -= mlen; + tlvdata += alen; + ifehdrln -= alen; tlv = (struct meta_tlvhdr *)tlvdata; } -- cgit v0.10.2 From 02ba38a5b6d6e0bc89c7b74651f1873055028a56 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 19 Aug 2016 12:44:29 +0100 Subject: ARM: sa1100: fix 3.6864MHz clock pxa_timer wants to be able to call clk_enable() etc on this clock, but our clk_enable() implementation expects non-NULL enable/disable operations. Provide these dummy implementations. Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c0204000 [00000000] *pgd=00000000 Internal error: Oops: 80000005 [#1] ARM Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 4.8.0-rc2+ #887 Hardware name: Intel-Assabet task: c0644590 task.stack: c0640000 PC is at 0x0 LR is at clk_enable+0x40/0x58 pc : [<00000000>] lr : [] psr: 600000d3 sp : c0641f60 ip : c0641f4c fp : c0641f74 r10: c1ffc7a0 r9 : 6901b118 r8 : 00000001 r7 : c0639a34 r6 : 0000001b r5 : a00000d3 r4 : c0645d70 r3 : c0645d78 r2 : 00000001 r1 : c0641ef0 r0 : c0645d70 Flags: nZCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment none Control: c020717f Table: c020717f DAC: 00000053 Process swapper (pid: 0, stack limit = 0xc0640188) Stack: (0xc0641f60 to 0xc0642000) 1f60: 00384000 c08762e4 c0641f98 c0641f78 c063308c c021b144 00000000 00000000 1f80: 00000000 c0660b20 ffffffff c0641fa8 c0641f9c c06220ec c0633058 c0641fb8 1fa0: c0641fac c061f114 c06220dc c0641ff4 c0641fbc c061bb68 c061f0fc ffffffff 1fc0: ffffffff 00000000 c061b6cc c0639a34 c0660cd4 c0642038 c0639a30 c0645434 1fe0: c0204000 c06380f8 00000000 c0641ff8 c0208048 c061b954 00000000 00000000 Backtrace: [] (clk_enable) from [] (pxa_timer_nodt_init+0x40/0x120) r5:c08762e4 r4:00384000 [] (pxa_timer_nodt_init) from [] (sa1100_timer_init+0x1c/0x20) r6:ffffffff r5:c0660b20 r4:00000000 [] (sa1100_timer_init) from [] (time_init+0x24/0x2c) [] (time_init) from [] (start_kernel+0x220/0x42c) [] (start_kernel) from [] (0xc0208048) r10:c06380f8 r8:c0204000 r7:c0645434 r6:c0639a30 r5:c0642038 r4:c0660cd4 Code: bad PC value ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Attempted to kill the idle task! Fixes: ee3a4020f7c9 ("ARM: 8250/1: sa1100: provide OSTIMER0 clock for pxa_timer") Acked-by: Dmitry Eremin-Solenikov Signed-off-by: Russell King diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c index cbf53bb..0bf32209 100644 --- a/arch/arm/mach-sa1100/clock.c +++ b/arch/arm/mach-sa1100/clock.c @@ -125,6 +125,8 @@ static unsigned long clk_36864_get_rate(struct clk *clk) } static struct clkops clk_36864_ops = { + .enable = clk_cpu_enable, + .disable = clk_cpu_disable, .get_rate = clk_36864_get_rate, }; -- cgit v0.10.2 From 198b51e8a6a31d3a6f8e9dd9cade3635d0291f26 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 19 Aug 2016 12:47:54 +0100 Subject: ARM: sa1100: register clocks early Since we switched to use pxa_timer, we need to provide the OSTIMER0 clock. However, as the clock is initialised early, we need to provide the clock early as well, so that pxa_timer can find it. Adding the clock to the clkdev table at core_initcall() time is way too late. Move the initialisation earlier. Fixes: ee3a4020f7c9 ("ARM: 8250/1: sa1100: provide OSTIMER0 clock for pxa_timer") Acked-by: Dmitry Eremin-Solenikov Signed-off-by: Russell King diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c index 0bf32209..0db4689 100644 --- a/arch/arm/mach-sa1100/clock.c +++ b/arch/arm/mach-sa1100/clock.c @@ -142,9 +142,8 @@ static struct clk_lookup sa11xx_clkregs[] = { CLKDEV_INIT(NULL, "OSTIMER0", &clk_36864), }; -static int __init sa11xx_clk_init(void) +int __init sa11xx_clk_init(void) { clkdev_add_table(sa11xx_clkregs, ARRAY_SIZE(sa11xx_clkregs)); return 0; } -core_initcall(sa11xx_clk_init); diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 345e63f..2e2c35b 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -388,6 +388,7 @@ void __init sa1100_init_irq(void) sa11x0_init_irq_nodt(IRQ_GPIO0_SC, irq_resource.start); sa1100_init_gpio(); + sa11xx_clk_init(); } /* diff --git a/arch/arm/mach-sa1100/generic.h b/arch/arm/mach-sa1100/generic.h index 0d92e11..68199b603 100644 --- a/arch/arm/mach-sa1100/generic.h +++ b/arch/arm/mach-sa1100/generic.h @@ -44,3 +44,5 @@ int sa11x0_pm_init(void); #else static inline int sa11x0_pm_init(void) { return 0; } #endif + +int sa11xx_clk_init(void); -- cgit v0.10.2 From f271b779f415455e904f3f10067ab7f2fb8af497 Mon Sep 17 00:00:00 2001 From: Vladimir Murzin Date: Thu, 18 Aug 2016 16:28:24 +0100 Subject: ARM: 8599/1: mm: pull asm/memory.h explicitly Commit d78114554939a (""ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL"") introduced a macro which lives under asm/memory.h. Unfortunately, for MMU-less systems (like R-class) it leads to build failure: arch/arm/mm/proc-v7.S: Assembler messages: arch/arm/mm/proc-v7.S:538: Error: unrecognised relocation suffix make[1]: *** [arch/arm/mm/proc-v7.o] Error 1 make: *** [arch/arm/mm] Error 2 since it is implicitly pulled via asm/pgtable.h for MMU capable systems only. To fix it include asm/memory.h explicitly. Signed-off-by: Vladimir Murzin Signed-off-by: Russell King diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index a7123b4..d00d52c 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -16,6 +16,7 @@ #include #include #include +#include #include "proc-macros.S" -- cgit v0.10.2 From 1527eda3ab290f4ab519fe495c70ede5b0ad699f Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Fri, 19 Aug 2016 19:38:41 +0100 Subject: ARM: 8600/1: Enforce some NS-SVC initialisation Since the non-secure copies of banked registers lack architecturally defined reset values, there is no actual guarantee when entering in Hyp from secure-only firmware that the Non-Secure PL1 state will look the way that kernel entry (in particular the decompressor stub) expects. So far, we've been getting away with it thanks to implementation details of ARMv7 cores and/or bootloader behaviour, but for the sake of forwards compatibility let's try to ensure that we have a minimally sane state before dropping down into it. Cc: Russell King Reviewed-by: Marc Zyngier Reviewed-by: Christoffer Dall Signed-off-by: Robin Murphy Signed-off-by: Russell King diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 0b1e4a9..15d073a 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -142,6 +142,19 @@ ARM_BE8(orr r7, r7, #(1 << 25)) @ HSCTLR.EE and r7, #0x1f @ Preserve HPMN mcr p15, 4, r7, c1, c1, 1 @ HDCR + @ Make sure NS-SVC is initialised appropriately + mrc p15, 0, r7, c1, c0, 0 @ SCTLR + orr r7, #(1 << 5) @ CP15 barriers enabled + bic r7, #(3 << 7) @ Clear SED/ITD for v8 (RES0 for v7) + bic r7, #(3 << 19) @ WXN and UWXN disabled + mcr p15, 0, r7, c1, c0, 0 @ SCTLR + + mrc p15, 0, r7, c0, c0, 0 @ MIDR + mcr p15, 4, r7, c0, c0, 0 @ VPIDR + + mrc p15, 0, r7, c0, c0, 5 @ MPIDR + mcr p15, 4, r7, c0, c0, 5 @ VMPIDR + #if !defined(ZIMAGE) && defined(CONFIG_ARM_ARCH_TIMER) @ make CNTP_* and CNTPCT accessible from PL1 mrc p15, 0, r7, c0, c1, 1 @ ID_PFR1 -- cgit v0.10.2 From 486095fae3a8a6b1ae07c51844699d9bd5cfbebc Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Tue, 23 Aug 2016 13:58:25 +0800 Subject: pinctrl: sunxi: fix uart1 CTS/RTS pins at PG on A23/A33 PG8, PG9 is said to be the CTS/RTS pins for UART1 according to the A23/33 datasheets. However, the function is wrongly named "uart2" in the pinctrl driver. This patch fixes this by modifying them to be named "uart1". Cc: stable@vger.kernel.org Signed-off-by: Icenowy Zheng Acked-by: Maxime Ripard Signed-off-by: Linus Walleij diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c index ce483b0..f9d661e 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c @@ -485,12 +485,12 @@ static const struct sunxi_desc_pin sun8i_a23_pins[] = { SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 8), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), - SUNXI_FUNCTION(0x2, "uart2"), /* RTS */ + SUNXI_FUNCTION(0x2, "uart1"), /* RTS */ SUNXI_FUNCTION_IRQ_BANK(0x4, 2, 8)), /* PG_EINT8 */ SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 9), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), - SUNXI_FUNCTION(0x2, "uart2"), /* CTS */ + SUNXI_FUNCTION(0x2, "uart1"), /* CTS */ SUNXI_FUNCTION_IRQ_BANK(0x4, 2, 9)), /* PG_EINT9 */ SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 10), SUNXI_FUNCTION(0x0, "gpio_in"), diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c index 3040abe..3131cac 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c @@ -407,12 +407,12 @@ static const struct sunxi_desc_pin sun8i_a33_pins[] = { SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 8), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), - SUNXI_FUNCTION(0x2, "uart2"), /* RTS */ + SUNXI_FUNCTION(0x2, "uart1"), /* RTS */ SUNXI_FUNCTION_IRQ_BANK(0x4, 1, 8)), /* PG_EINT8 */ SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 9), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), - SUNXI_FUNCTION(0x2, "uart2"), /* CTS */ + SUNXI_FUNCTION(0x2, "uart1"), /* CTS */ SUNXI_FUNCTION_IRQ_BANK(0x4, 1, 9)), /* PG_EINT9 */ SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 10), SUNXI_FUNCTION(0x0, "gpio_in"), -- cgit v0.10.2 From 6c73358c83ce870c0cf32413e5cadb3b9a39c606 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 22 Aug 2016 16:58:53 -0400 Subject: USB: fix typo in wMaxPacketSize validation The maximum value allowed for wMaxPacketSize of a high-speed interrupt endpoint is 1024 bytes, not 1023. Signed-off-by: Alan Stern Fixes: aed9d65ac327 ("USB: validate wMaxPacketValue entries in endpoint descriptors") CC: Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 0511631..15ce4ab 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -187,7 +187,7 @@ static const unsigned short high_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 64, [USB_ENDPOINT_XFER_ISOC] = 1024, [USB_ENDPOINT_XFER_BULK] = 512, - [USB_ENDPOINT_XFER_INT] = 1023, + [USB_ENDPOINT_XFER_INT] = 1024, }; static const unsigned short super_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 512, -- cgit v0.10.2 From a8719670687c46ed2e904c0d05fa4cd7e4950cd1 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 23 Aug 2016 10:27:19 +0300 Subject: ASoC: omap-mcpdm: Fix irq resource handling Fixes: ddd17531ad908 ("ASoC: omap-mcpdm: Clean up with devm_* function") Managed irq request will not doing any good in ASoC probe level as it is not going to free up the irq when the driver is unbound from the sound card. Signed-off-by: Peter Ujfalusi Reported-by: Russell King Signed-off-by: Mark Brown diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c index 74d6e6f..64609c7 100644 --- a/sound/soc/omap/omap-mcpdm.c +++ b/sound/soc/omap/omap-mcpdm.c @@ -394,8 +394,8 @@ static int omap_mcpdm_probe(struct snd_soc_dai *dai) pm_runtime_get_sync(mcpdm->dev); omap_mcpdm_write(mcpdm, MCPDM_REG_CTRL, 0x00); - ret = devm_request_irq(mcpdm->dev, mcpdm->irq, omap_mcpdm_irq_handler, - 0, "McPDM", (void *)mcpdm); + ret = request_irq(mcpdm->irq, omap_mcpdm_irq_handler, 0, "McPDM", + (void *)mcpdm); pm_runtime_put_sync(mcpdm->dev); @@ -420,6 +420,7 @@ static int omap_mcpdm_remove(struct snd_soc_dai *dai) { struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai); + free_irq(mcpdm->irq, (void *)mcpdm); pm_runtime_disable(mcpdm->dev); return 0; -- cgit v0.10.2 From a77ec83a57890240c546df00ca5df1cdeedb1cc3 Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Mon, 6 Jun 2016 18:07:59 -0400 Subject: vhost/scsi: fix reuse of &vq->iov[out] in response The address of the iovec &vq->iov[out] is not guaranteed to contain the scsi command's response iovec throughout the lifetime of the command. Rather, it is more likely to contain an iovec from an immediately following command after looping back around to vhost_get_vq_desc(). Pass along the iovec entirely instead. Fixes: 79c14141a487 ("vhost/scsi: Convert completion path to use copy_to_iter") Cc: stable@vger.kernel.org Signed-off-by: Benjamin Coddington Signed-off-by: Michael S. Tsirkin diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 9d6320e..6e29d05 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -88,7 +88,7 @@ struct vhost_scsi_cmd { struct scatterlist *tvc_prot_sgl; struct page **tvc_upages; /* Pointer to response header iovec */ - struct iovec *tvc_resp_iov; + struct iovec tvc_resp_iov; /* Pointer to vhost_scsi for our device */ struct vhost_scsi *tvc_vhost; /* Pointer to vhost_virtqueue for the cmd */ @@ -547,7 +547,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work) memcpy(v_rsp.sense, cmd->tvc_sense_buf, se_cmd->scsi_sense_length); - iov_iter_init(&iov_iter, READ, cmd->tvc_resp_iov, + iov_iter_init(&iov_iter, READ, &cmd->tvc_resp_iov, cmd->tvc_in_iovs, sizeof(v_rsp)); ret = copy_to_iter(&v_rsp, sizeof(v_rsp), &iov_iter); if (likely(ret == sizeof(v_rsp))) { @@ -1044,7 +1044,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) } cmd->tvc_vhost = vs; cmd->tvc_vq = vq; - cmd->tvc_resp_iov = &vq->iov[out]; + cmd->tvc_resp_iov = vq->iov[out]; cmd->tvc_in_iovs = in; pr_debug("vhost_scsi got command opcode: %#02x, lun: %d\n", -- cgit v0.10.2 From b88fa69eaa8649f11828158c7b65c4bcd886ebd5 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 23 Aug 2016 11:19:33 -0400 Subject: pNFS: The client must not do I/O to the DS if it's lease has expired Ensure that the client conforms to the normative behaviour described in RFC5661 Section 12.7.2: "If a client believes its lease has expired, it MUST NOT send I/O to the storage device until it has validated its lease." So ensure that we wait for the lease to be validated before using the layout. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # v3.20+ diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index bf98f1b..6daf034 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1555,6 +1555,7 @@ pnfs_update_layout(struct inode *ino, } lookup_again: + nfs4_client_recover_expired_lease(clp); first = false; spin_lock(&ino->i_lock); lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags); -- cgit v0.10.2 From 41963c10c47a35185e68cb9049f7a3493c94d2d7 Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Mon, 22 Aug 2016 14:11:16 -0400 Subject: pnfs/blocklayout: update last_write_offset atomically with extents Block/SCSI layout write completion may add committable extents to the extent tree before updating the layout's last-written byte under the inode lock. If a sync happens before this value is updated, then prepare_layoutcommit may find and encode these extents which would produce a LAYOUTCOMMIT request whose encoded extents are larger than the request's loca_length. Fix this by using a last-written byte value that is updated atomically with the extent tree so that commitable extents always match. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index f55a4e7..2178476 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -346,7 +346,7 @@ static void bl_write_cleanup(struct work_struct *work) PAGE_SIZE - 1) & (loff_t)PAGE_MASK; ext_tree_mark_written(bl, start >> SECTOR_SHIFT, - (end - start) >> SECTOR_SHIFT); + (end - start) >> SECTOR_SHIFT, end); } pnfs_ld_write_done(hdr); diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h index 18e6fd0..efc007f 100644 --- a/fs/nfs/blocklayout/blocklayout.h +++ b/fs/nfs/blocklayout/blocklayout.h @@ -141,6 +141,7 @@ struct pnfs_block_layout { struct rb_root bl_ext_ro; spinlock_t bl_ext_lock; /* Protects list manipulation */ bool bl_scsi_layout; + u64 bl_lwb; }; static inline struct pnfs_block_layout * @@ -182,7 +183,7 @@ int ext_tree_insert(struct pnfs_block_layout *bl, int ext_tree_remove(struct pnfs_block_layout *bl, bool rw, sector_t start, sector_t end); int ext_tree_mark_written(struct pnfs_block_layout *bl, sector_t start, - sector_t len); + sector_t len, u64 lwb); bool ext_tree_lookup(struct pnfs_block_layout *bl, sector_t isect, struct pnfs_block_extent *ret, bool rw); int ext_tree_prepare_commit(struct nfs4_layoutcommit_args *arg); diff --git a/fs/nfs/blocklayout/extent_tree.c b/fs/nfs/blocklayout/extent_tree.c index 992bcb1..c85fbfd 100644 --- a/fs/nfs/blocklayout/extent_tree.c +++ b/fs/nfs/blocklayout/extent_tree.c @@ -402,7 +402,7 @@ ext_tree_split(struct rb_root *root, struct pnfs_block_extent *be, int ext_tree_mark_written(struct pnfs_block_layout *bl, sector_t start, - sector_t len) + sector_t len, u64 lwb) { struct rb_root *root = &bl->bl_ext_rw; sector_t end = start + len; @@ -471,6 +471,8 @@ ext_tree_mark_written(struct pnfs_block_layout *bl, sector_t start, } } out: + if (bl->bl_lwb < lwb) + bl->bl_lwb = lwb; spin_unlock(&bl->bl_ext_lock); __ext_put_deviceids(&tmp); @@ -518,7 +520,7 @@ static __be32 *encode_scsi_range(struct pnfs_block_extent *be, __be32 *p) } static int ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, - size_t buffer_size, size_t *count) + size_t buffer_size, size_t *count, __u64 *lastbyte) { struct pnfs_block_extent *be; int ret = 0; @@ -542,6 +544,8 @@ static int ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, p = encode_block_extent(be, p); be->be_tag = EXTENT_COMMITTING; } + *lastbyte = bl->bl_lwb - 1; + bl->bl_lwb = 0; spin_unlock(&bl->bl_ext_lock); return ret; @@ -564,7 +568,7 @@ ext_tree_prepare_commit(struct nfs4_layoutcommit_args *arg) arg->layoutupdate_pages = &arg->layoutupdate_page; retry: - ret = ext_tree_encode_commit(bl, start_p + 1, buffer_size, &count); + ret = ext_tree_encode_commit(bl, start_p + 1, buffer_size, &count, &arg->lastbytewritten); if (unlikely(ret)) { ext_tree_free_commitdata(arg, buffer_size); -- cgit v0.10.2 From 48ef5865d08fa0a36d786f2f8e12c6194d27538b Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Fri, 19 Aug 2016 08:50:23 +0200 Subject: IB/qib: Use memdup_user() rather than duplicating its implementation Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c index fcdf3791..c3edc03 100644 --- a/drivers/infiniband/hw/qib/qib_fs.c +++ b/drivers/infiniband/hw/qib/qib_fs.c @@ -328,26 +328,12 @@ static ssize_t flash_write(struct file *file, const char __user *buf, pos = *ppos; - if (pos != 0) { - ret = -EINVAL; - goto bail; - } - - if (count != sizeof(struct qib_flash)) { - ret = -EINVAL; - goto bail; - } - - tmp = kmalloc(count, GFP_KERNEL); - if (!tmp) { - ret = -ENOMEM; - goto bail; - } + if (pos != 0 || count != sizeof(struct qib_flash)) + return -EINVAL; - if (copy_from_user(tmp, buf, count)) { - ret = -EFAULT; - goto bail_tmp; - } + tmp = memdup_user(buf, count); + if (IS_ERR(tmp)) + return PTR_ERR(tmp); dd = private2dd(file); if (qib_eeprom_write(dd, pos, tmp, count)) { @@ -361,8 +347,6 @@ static ssize_t flash_write(struct file *file, const char __user *buf, bail_tmp: kfree(tmp); - -bail: return ret; } -- cgit v0.10.2 From 92d27ae6b3bb3491c1685fb3ca7ae1b26d81bdf4 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Mon, 22 Aug 2016 18:23:24 +0200 Subject: IB/core: Use memdup_user() rather than duplicating its implementation * Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. * The local variable "ret" will be set to an appropriate value a bit later. Thus omit the explicit initialisation at the beginning. Signed-off-by: Markus Elfring Signed-off-by: Doug Ledford diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 8e90dd2..e1f9673 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2115,22 +2115,17 @@ static inline bool ib_is_udata_cleared(struct ib_udata *udata, size_t len) { const void __user *p = udata->inbuf + offset; - bool ret = false; + bool ret; u8 *buf; if (len > USHRT_MAX) return false; - buf = kmalloc(len, GFP_KERNEL); - if (!buf) + buf = memdup_user(p, len); + if (IS_ERR(buf)) return false; - if (copy_from_user(buf, p, len)) - goto free; - ret = !memchr_inv(buf, 0, len); - -free: kfree(buf); return ret; } -- cgit v0.10.2 From 6c7d46fdb8165ece4b0a17fb8f0b9320dbfeffc2 Mon Sep 17 00:00:00 2001 From: Shiraz Saleem Date: Mon, 22 Aug 2016 18:09:14 -0500 Subject: i40iw: Change mem_resources pointer to a u8 iwdev->mem_resources is incorrectly defined as an unsigned long instead of u8. As a result, the offset into the dynamic allocated structures in i40iw_initialize_hw_resources() is incorrectly calculated and would lead to writing of memory regions outside of the allocated buffer. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h index b738acd..882f3ef 100644 --- a/drivers/infiniband/hw/i40iw/i40iw.h +++ b/drivers/infiniband/hw/i40iw/i40iw.h @@ -232,7 +232,7 @@ struct i40iw_device { struct i40e_client *client; struct i40iw_hw hw; struct i40iw_cm_core cm_core; - unsigned long *mem_resources; + u8 *mem_resources; unsigned long *allocated_qps; unsigned long *allocated_cqs; unsigned long *allocated_mrs; -- cgit v0.10.2 From 44856be3e95c87f03e850ef4fdf8c0503c2dde18 Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Mon, 22 Aug 2016 18:15:58 -0500 Subject: i40iw: Protect req_resource_num update In i40iw_alloc_resource(), ensure that the update to req_resource_num is protected by the lock. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h index 882f3ef..8ec09e4 100644 --- a/drivers/infiniband/hw/i40iw/i40iw.h +++ b/drivers/infiniband/hw/i40iw/i40iw.h @@ -435,8 +435,8 @@ static inline int i40iw_alloc_resource(struct i40iw_device *iwdev, *next = resource_num + 1; if (*next == max_resources) *next = 0; - spin_unlock_irqrestore(&iwdev->resource_lock, flags); *req_resource_num = resource_num; + spin_unlock_irqrestore(&iwdev->resource_lock, flags); return 0; } -- cgit v0.10.2 From faa739fb5df56aadab96bcd2f6eb3486cc3a3aec Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Mon, 22 Aug 2016 18:17:12 -0500 Subject: i40iw: Add missing check for interface already open In i40iw_open(), check if interface is already open and return success if it is. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c index 6e90813..0cbbe40 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_main.c +++ b/drivers/infiniband/hw/i40iw/i40iw_main.c @@ -1558,6 +1558,10 @@ static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client) enum i40iw_status_code status; struct i40iw_handler *hdl; + hdl = i40iw_find_netdev(ldev->netdev); + if (hdl) + return 0; + hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); if (!hdl) return -ENOMEM; -- cgit v0.10.2 From cff069b78c21559f427c3fefe9ef3294e3dec094 Mon Sep 17 00:00:00 2001 From: Bharat Potnuri Date: Tue, 23 Aug 2016 20:27:33 +0530 Subject: iw_cxgb4: Fix cxgb4 arm CQ logic w/IB_CQ_REPORT_MISSED_EVENTS Current cxgb4 arm CQ logic ignores IB_CQ_REPORT_MISSED_EVENTS for request completion notification on a CQ. Due to this ib_poll_handler() assumes all events polled and avoids further iopoll scheduling. This patch adds logic to cxgb4 ib_req_notify_cq() handler to check if CQ is not empty and return accordingly. Based on the return value of ib_req_notify_cq() handler, ib_poll_handler() will schedule a run of iopoll handler. Signed-off-by: Potnuri Bharat Teja Reviewed-by: Steve Wise Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c index 812ab72..ac926c9 100644 --- a/drivers/infiniband/hw/cxgb4/cq.c +++ b/drivers/infiniband/hw/cxgb4/cq.c @@ -1016,15 +1016,15 @@ int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata) int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) { struct c4iw_cq *chp; - int ret; + int ret = 0; unsigned long flag; chp = to_c4iw_cq(ibcq); spin_lock_irqsave(&chp->lock, flag); - ret = t4_arm_cq(&chp->cq, - (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED); + t4_arm_cq(&chp->cq, + (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED); + if (flags & IB_CQ_REPORT_MISSED_EVENTS) + ret = t4_cq_notempty(&chp->cq); spin_unlock_irqrestore(&chp->lock, flag); - if (ret && !(flags & IB_CQ_REPORT_MISSED_EVENTS)) - ret = 0; return ret; } diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h index 6126bbe..02173f4 100644 --- a/drivers/infiniband/hw/cxgb4/t4.h +++ b/drivers/infiniband/hw/cxgb4/t4.h @@ -634,6 +634,11 @@ static inline int t4_valid_cqe(struct t4_cq *cq, struct t4_cqe *cqe) return (CQE_GENBIT(cqe) == cq->gen); } +static inline int t4_cq_notempty(struct t4_cq *cq) +{ + return cq->sw_in_use || t4_valid_cqe(cq, &cq->queue[cq->cidx]); +} + static inline int t4_next_hw_cqe(struct t4_cq *cq, struct t4_cqe **cqe) { int ret; -- cgit v0.10.2 From 543852af8e5902aee8f7c72c89e1513663e0f696 Mon Sep 17 00:00:00 2001 From: Caesar Wang Date: Wed, 27 Jul 2016 22:24:04 +0800 Subject: iio: adc: rockchip_saradc: reset saradc controller before programming it SARADC controller needs to be reset before programming it, otherwise it will not function properly. Signed-off-by: Caesar Wang Cc: Jonathan Cameron Cc: Heiko Stuebner Cc: Rob Herring Cc: linux-iio@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Tested-by: Guenter Roeck Cc: Signed-off-by: Jonathan Cameron diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt index bf99e2f..205593f 100644 --- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt +++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt @@ -16,6 +16,11 @@ Required properties: - vref-supply: The regulator supply ADC reference voltage. - #io-channel-cells: Should be 1, see ../iio-bindings.txt +Optional properties: +- resets: Must contain an entry for each entry in reset-names if need support + this option. See ../reset/reset.txt for details. +- reset-names: Must include the name "saradc-apb". + Example: saradc: saradc@2006c000 { compatible = "rockchip,saradc"; @@ -23,6 +28,8 @@ Example: interrupts = ; clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>; clock-names = "saradc", "apb_pclk"; + resets = <&cru SRST_SARADC>; + reset-names = "saradc-apb"; #io-channel-cells = <1>; vref-supply = <&vcc18>; }; diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 1de31bd..7675772 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -389,6 +389,7 @@ config QCOM_SPMI_VADC config ROCKCHIP_SARADC tristate "Rockchip SARADC driver" depends on ARCH_ROCKCHIP || (ARM && COMPILE_TEST) + depends on RESET_CONTROLLER help Say yes here to build support for the SARADC found in SoCs from Rockchip. diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index f9ad6c2..85d7012 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -21,6 +21,8 @@ #include #include #include +#include +#include #include #include @@ -53,6 +55,7 @@ struct rockchip_saradc { struct clk *clk; struct completion completion; struct regulator *vref; + struct reset_control *reset; const struct rockchip_saradc_data *data; u16 last_val; }; @@ -190,6 +193,16 @@ static const struct of_device_id rockchip_saradc_match[] = { }; MODULE_DEVICE_TABLE(of, rockchip_saradc_match); +/** + * Reset SARADC Controller. + */ +static void rockchip_saradc_reset_controller(struct reset_control *reset) +{ + reset_control_assert(reset); + usleep_range(10, 20); + reset_control_deassert(reset); +} + static int rockchip_saradc_probe(struct platform_device *pdev) { struct rockchip_saradc *info = NULL; @@ -218,6 +231,20 @@ static int rockchip_saradc_probe(struct platform_device *pdev) if (IS_ERR(info->regs)) return PTR_ERR(info->regs); + /* + * The reset should be an optional property, as it should work + * with old devicetrees as well + */ + info->reset = devm_reset_control_get(&pdev->dev, "saradc-apb"); + if (IS_ERR(info->reset)) { + ret = PTR_ERR(info->reset); + if (ret != -ENOENT) + return ret; + + dev_dbg(&pdev->dev, "no reset control found\n"); + info->reset = NULL; + } + init_completion(&info->completion); irq = platform_get_irq(pdev, 0); @@ -252,6 +279,9 @@ static int rockchip_saradc_probe(struct platform_device *pdev) return PTR_ERR(info->vref); } + if (info->reset) + rockchip_saradc_reset_controller(info->reset); + /* * Use a default value for the converter clock. * This may become user-configurable in the future. -- cgit v0.10.2 From 78ec79bfd59e126e1cb394302bfa531a420b3ecd Mon Sep 17 00:00:00 2001 From: Caesar Wang Date: Wed, 27 Jul 2016 22:24:06 +0800 Subject: arm64: dts: rockchip: add reset saradc node for rk3368 SoCs SARADC controller needs to be reset before programming it, otherwise it will not function properly. Signed-off-by: Caesar Wang Acked-by: Heiko Stuebner Cc: Signed-off-by: Jonathan Cameron diff --git a/arch/arm64/boot/dts/rockchip/rk3368.dtsi b/arch/arm64/boot/dts/rockchip/rk3368.dtsi index d02a9003..4f44d11 100644 --- a/arch/arm64/boot/dts/rockchip/rk3368.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3368.dtsi @@ -270,6 +270,8 @@ #io-channel-cells = <1>; clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>; clock-names = "saradc", "apb_pclk"; + resets = <&cru SRST_SARADC>; + reset-names = "saradc-apb"; status = "disabled"; }; -- cgit v0.10.2 From 3d4267a5a3a4b7619b80ad1839d8b3bedd8b7a8d Mon Sep 17 00:00:00 2001 From: Caesar Wang Date: Wed, 27 Jul 2016 22:24:07 +0800 Subject: arm: dts: rockchip: add reset node for the exist saradc SoCs SARADC controller needs to be reset before programming it, otherwise it will not function properly. Signed-off-by: Caesar Wang Acked-by: Heiko Stuebner Cc: Signed-off-by: Jonathan Cameron diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi index c0ba86c..0d0dae3 100644 --- a/arch/arm/boot/dts/rk3066a.dtsi +++ b/arch/arm/boot/dts/rk3066a.dtsi @@ -197,6 +197,8 @@ clock-names = "saradc", "apb_pclk"; interrupts = ; #io-channel-cells = <1>; + resets = <&cru SRST_SARADC>; + reset-names = "saradc-apb"; status = "disabled"; }; diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi index cd33f01..91c4b3c 100644 --- a/arch/arm/boot/dts/rk3288.dtsi +++ b/arch/arm/boot/dts/rk3288.dtsi @@ -279,6 +279,8 @@ #io-channel-cells = <1>; clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>; clock-names = "saradc", "apb_pclk"; + resets = <&cru SRST_SARADC>; + reset-names = "saradc-apb"; status = "disabled"; }; diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi index 99bbcc2..e2cd683 100644 --- a/arch/arm/boot/dts/rk3xxx.dtsi +++ b/arch/arm/boot/dts/rk3xxx.dtsi @@ -399,6 +399,8 @@ #io-channel-cells = <1>; clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>; clock-names = "saradc", "apb_pclk"; + resets = <&cru SRST_SARADC>; + reset-names = "saradc-apb"; status = "disabled"; }; -- cgit v0.10.2 From 53e5f36fbd2453ad69a3369a1db62dc06c30a4aa Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 23 Aug 2016 15:32:51 -0400 Subject: USB: avoid left shift by -1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit UBSAN complains about a left shift by -1 in proc_do_submiturb(). This can occur when an URB is submitted for a bulk or control endpoint on a high-speed device, since the code doesn't bother to check the endpoint type; normally only interrupt or isochronous endpoints have a nonzero bInterval value. Aside from the fact that the operation is illegal, it shouldn't matter because the result isn't used. Still, in theory it could cause a hardware exception or other problem, so we should work around it. This patch avoids doing the left shift unless the shift amount is >= 0. The same piece of code has another problem. When checking the device speed (the exponential encoding for interrupt endpoints is used only by high-speed or faster devices), we need to look for speed >= USB_SPEED_SUPER as well as speed == USB_SPEED HIGH. The patch adds this check. Signed-off-by: Alan Stern Reported-by: Vittorio Zecca Tested-by: Vittorio Zecca Suggested-by: Bjørn Mork CC: Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e6a6d67..09c8d9c 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1709,11 +1709,17 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb as->urb->start_frame = uurb->start_frame; as->urb->number_of_packets = number_of_packets; as->urb->stream_id = stream_id; - if (uurb->type == USBDEVFS_URB_TYPE_ISO || - ps->dev->speed == USB_SPEED_HIGH) - as->urb->interval = 1 << min(15, ep->desc.bInterval - 1); - else - as->urb->interval = ep->desc.bInterval; + + if (ep->desc.bInterval) { + if (uurb->type == USBDEVFS_URB_TYPE_ISO || + ps->dev->speed == USB_SPEED_HIGH || + ps->dev->speed >= USB_SPEED_SUPER) + as->urb->interval = 1 << + min(15, ep->desc.bInterval - 1); + else + as->urb->interval = ep->desc.bInterval; + } + as->urb->context = as; as->urb->complete = async_completed; for (totlen = u = 0; u < number_of_packets; u++) { -- cgit v0.10.2 From c0082e985fdf77b02fc9e0dac3b58504dcf11b7a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= Date: Fri, 12 Aug 2016 15:26:30 +0200 Subject: ubifs: Fix assertion in layout_in_gaps() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit An assertion in layout_in_gaps() verifies that the gap_lebs pointer is below the maximum bound. When computing this maximum bound the idx_lebs count is multiplied by sizeof(int), while C pointers arithmetic does take into account the size of the pointed elements implicitly already. Remove the multiplication to fix the assertion. Fixes: 1e51764a3c2ac05a ("UBIFS: add new flash file system") Cc: Signed-off-by: Vincent Stehlé Cc: Artem Bityutskiy Signed-off-by: Artem Bityutskiy Signed-off-by: Richard Weinberger diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c index b45345d..51157da 100644 --- a/fs/ubifs/tnc_commit.c +++ b/fs/ubifs/tnc_commit.c @@ -370,7 +370,7 @@ static int layout_in_gaps(struct ubifs_info *c, int cnt) p = c->gap_lebs; do { - ubifs_assert(p < c->gap_lebs + sizeof(int) * c->lst.idx_lebs); + ubifs_assert(p < c->gap_lebs + c->lst.idx_lebs); written = layout_leb_in_gaps(c, p); if (written < 0) { err = written; -- cgit v0.10.2 From 17ce1eb0b64eb27d4f9180daae7495fa022c7b0d Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Sun, 31 Jul 2016 21:42:23 +0200 Subject: ubifs: Fix xattr generic handler usage UBIFS uses full names to work with xattrs, therefore we have to use xattr_full_name() to obtain the xattr prefix as string. Cc: Cc: Andreas Gruenbacher Fixes: 2b88fc21ca ("ubifs: Switch to generic xattr handlers") Signed-off-by: Richard Weinberger Reviewed-by: Andreas Gruenbacher Tested-by: Dongsheng Yang diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c index e237811..11a0041 100644 --- a/fs/ubifs/xattr.c +++ b/fs/ubifs/xattr.c @@ -575,7 +575,8 @@ static int ubifs_xattr_get(const struct xattr_handler *handler, dbg_gen("xattr '%s', ino %lu ('%pd'), buf size %zd", name, inode->i_ino, dentry, size); - return __ubifs_getxattr(inode, name, buffer, size); + name = xattr_full_name(handler, name); + return __ubifs_getxattr(inode, name, buffer, size); } static int ubifs_xattr_set(const struct xattr_handler *handler, @@ -586,6 +587,8 @@ static int ubifs_xattr_set(const struct xattr_handler *handler, dbg_gen("xattr '%s', host ino %lu ('%pd'), size %zd", name, inode->i_ino, dentry, size); + name = xattr_full_name(handler, name); + if (value) return __ubifs_setxattr(inode, name, value, size, flags); else -- cgit v0.10.2 From dad2232844073295c64e9cc2d734a0ade043e0f6 Mon Sep 17 00:00:00 2001 From: Andrey Ryabinin Date: Wed, 17 Aug 2016 18:10:11 +0300 Subject: um: Don't discard .text.exit section Commit e41f501d3912 ("vmlinux.lds: account for destructor sections") added '.text.exit' to EXIT_TEXT which is discarded at link time by default. This breaks compilation of UML: `.text.exit' referenced in section `.fini_array' of /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o): defined in discarded section `.text.exit' of /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o) Apparently UML doesn't want to discard exit text, so let's place all EXIT_TEXT sections in .exit.text. Fixes: e41f501d3912 ("vmlinux.lds: account for destructor sections") Reported-by: Stefan Traby Signed-off-by: Andrey Ryabinin Cc: Acked-by: Dmitry Vyukov Signed-off-by: Richard Weinberger diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S index 1dd5bd8..1330553 100644 --- a/arch/um/include/asm/common.lds.S +++ b/arch/um/include/asm/common.lds.S @@ -81,7 +81,7 @@ .altinstr_replacement : { *(.altinstr_replacement) } /* .exit.text is discard at runtime, not link time, to deal with references from .altinstructions and .eh_frame */ - .exit.text : { *(.exit.text) } + .exit.text : { EXIT_TEXT } .exit.data : { *(.exit.data) } .preinit_array : { -- cgit v0.10.2 From 21c80c9fefc3db10b530a96eb0478c29eb28bf77 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 23 Aug 2016 16:36:42 -0500 Subject: x86/PCI: VMD: Fix infinite loop executing irq's We can't initialize the list head on deletion as this causes the node to point to itself, which causes an infinite loop if vmd_irq() happens to be servicing that node. The list initialization was trying to fix a bug from multiple calls to disable the same IRQ. Fix this instead by having the VMD driver track if the interrupt is enabled. [bhelgaas: changelog, add "Fixes"] Fixes: 97e923063575 ("x86/PCI: VMD: Initialize list item in IRQ disable") Reported-by: Grzegorz Koczot Tested-by: Miroslaw Drost Signed-off-by: Keith Busch Signed-off-by: Bjorn Helgaas Acked-by Jon Derrick: diff --git a/arch/x86/pci/vmd.c b/arch/x86/pci/vmd.c index b814ca6..7948be3 100644 --- a/arch/x86/pci/vmd.c +++ b/arch/x86/pci/vmd.c @@ -41,6 +41,7 @@ static DEFINE_RAW_SPINLOCK(list_lock); * @node: list item for parent traversal. * @rcu: RCU callback item for freeing. * @irq: back pointer to parent. + * @enabled: true if driver enabled IRQ * @virq: the virtual IRQ value provided to the requesting driver. * * Every MSI/MSI-X IRQ requested for a device in a VMD domain will be mapped to @@ -50,6 +51,7 @@ struct vmd_irq { struct list_head node; struct rcu_head rcu; struct vmd_irq_list *irq; + bool enabled; unsigned int virq; }; @@ -122,7 +124,9 @@ static void vmd_irq_enable(struct irq_data *data) unsigned long flags; raw_spin_lock_irqsave(&list_lock, flags); + WARN_ON(vmdirq->enabled); list_add_tail_rcu(&vmdirq->node, &vmdirq->irq->irq_list); + vmdirq->enabled = true; raw_spin_unlock_irqrestore(&list_lock, flags); data->chip->irq_unmask(data); @@ -136,8 +140,10 @@ static void vmd_irq_disable(struct irq_data *data) data->chip->irq_mask(data); raw_spin_lock_irqsave(&list_lock, flags); - list_del_rcu(&vmdirq->node); - INIT_LIST_HEAD_RCU(&vmdirq->node); + if (vmdirq->enabled) { + list_del_rcu(&vmdirq->node); + vmdirq->enabled = false; + } raw_spin_unlock_irqrestore(&list_lock, flags); } -- cgit v0.10.2 From e83c6744e81abc93a20d0eb3b7f504a176a6126a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 23 Aug 2016 13:59:33 -0700 Subject: udp: fix poll() issue with zero sized packets Laura tracked poll() [and friends] regression caused by commit e6afc8ace6dd ("udp: remove headers from UDP packets before queueing") udp_poll() needs to know if there is a valid packet in receive queue, even if its payload length is 0. Change first_packet_length() to return an signed int, and use -1 as the indication of an empty queue. Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing") Reported-by: Laura Abbott Signed-off-by: Eric Dumazet Tested-by: Laura Abbott Signed-off-by: David S. Miller diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index e61f7cd..00d18c5 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1182,13 +1182,13 @@ out: * @sk: socket * * Drops all bad checksum frames, until a valid one is found. - * Returns the length of found skb, or 0 if none is found. + * Returns the length of found skb, or -1 if none is found. */ -static unsigned int first_packet_length(struct sock *sk) +static int first_packet_length(struct sock *sk) { struct sk_buff_head list_kill, *rcvq = &sk->sk_receive_queue; struct sk_buff *skb; - unsigned int res; + int res; __skb_queue_head_init(&list_kill); @@ -1203,7 +1203,7 @@ static unsigned int first_packet_length(struct sock *sk) __skb_unlink(skb, rcvq); __skb_queue_tail(&list_kill, skb); } - res = skb ? skb->len : 0; + res = skb ? skb->len : -1; spin_unlock_bh(&rcvq->lock); if (!skb_queue_empty(&list_kill)) { @@ -1232,7 +1232,7 @@ int udp_ioctl(struct sock *sk, int cmd, unsigned long arg) case SIOCINQ: { - unsigned int amount = first_packet_length(sk); + int amount = max_t(int, 0, first_packet_length(sk)); return put_user(amount, (int __user *)arg); } @@ -2184,7 +2184,7 @@ unsigned int udp_poll(struct file *file, struct socket *sock, poll_table *wait) /* Check for false positives due to checksum errors */ if ((mask & POLLRDNORM) && !(file->f_flags & O_NONBLOCK) && - !(sk->sk_shutdown & RCV_SHUTDOWN) && !first_packet_length(sk)) + !(sk->sk_shutdown & RCV_SHUTDOWN) && first_packet_length(sk) == -1) mask &= ~(POLLIN | POLLRDNORM); return mask; -- cgit v0.10.2 From b323431bc017e9862870cbbac004774c769ee112 Mon Sep 17 00:00:00 2001 From: Zefir Kurtisi Date: Mon, 22 Aug 2016 15:56:38 +0200 Subject: gianfar: prevent fragmentation in DSA environments The eTSEC register MRBLR defines the maximum space in the RX buffers and is set to 1536 by gianfar. This reasonably covers the common use case where the MTU is kept at default 1500. In that case, the largest Ethernet frame size of 1518 plus an optional GMAC_FCB_LEN of 8, and an additional padding of 8 to handle FSL_GIANFAR_DEV_HAS_TIMER totals to 1534 and nicely fit within the chosen MRBLR. Alas, if the eTSEC is attached to a DSA enabled switch, the (E)DSA header extension (4 or 8 bytes) causes every maximum sized frame to be fragmented by the hardware. This patch increases the maximum RX buffer size by 8 and rounds up to the next multiple of 64, which the hardware's defines as RX buffer granularity. Signed-off-by: Zefir Kurtisi Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h index 373fd09..6e8a9c8 100644 --- a/drivers/net/ethernet/freescale/gianfar.h +++ b/drivers/net/ethernet/freescale/gianfar.h @@ -100,7 +100,8 @@ extern const char gfar_driver_version[]; #define DEFAULT_RX_LFC_THR 16 #define DEFAULT_LFC_PTVVAL 4 -#define GFAR_RXB_SIZE 1536 +/* prevent fragmenation by HW in DSA environments */ +#define GFAR_RXB_SIZE roundup(1536 + 8, 64) #define GFAR_SKBFRAG_SIZE (RXBUF_ALIGNMENT + GFAR_RXB_SIZE \ + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) #define GFAR_RXB_TRUESIZE 2048 -- cgit v0.10.2 From 6c389fc931bcda88940c809f752ada6d7799482c Mon Sep 17 00:00:00 2001 From: Zefir Kurtisi Date: Mon, 22 Aug 2016 15:58:12 +0200 Subject: gianfar: fix size of scatter-gathered frames The current scatter-gather logic in gianfar is flawed, since it does not consider the eTSEC's RxBD 'Data Length' field is context depening: for the last fragment it contains the full frame size, while fragments contain the fragment size, which equals the value written to register MRBLR. This causes data corruption as soon as the hardware starts to fragment receiving frames. As a result, the size of fragmented frames is increased by (nr_frags - 1) * MRBLR We first noticed this issue working with DSA, where an ICMP request sized 1472 bytes causes the scatter-gather logic to kick in. The full Ethernet frame (1518) gets increased by DSA (4), GMAC_FCB_LEN (8), and FSL_GIANFAR_DEV_HAS_TIMER (priv->padding=8) to a total of 1538 octets, which is fragmented by the hardware and reconstructed by the driver to a 3074 octet frame. This patch fixes the problem by adjusting the size of the last fragment. It was tested by setting MRBLR to different multiples of 64, proving correct scatter-gather operation on frames with up to 9000 octets in size. Signed-off-by: Zefir Kurtisi Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index d20935d..4b4f5bc 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -2922,17 +2922,25 @@ static bool gfar_add_rx_frag(struct gfar_rx_buff *rxb, u32 lstatus, { unsigned int size = lstatus & BD_LENGTH_MASK; struct page *page = rxb->page; + bool last = !!(lstatus & BD_LFLAG(RXBD_LAST)); /* Remove the FCS from the packet length */ - if (likely(lstatus & BD_LFLAG(RXBD_LAST))) + if (last) size -= ETH_FCS_LEN; - if (likely(first)) + if (likely(first)) { skb_put(skb, size); - else - skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, - rxb->page_offset + RXBUF_ALIGNMENT, - size, GFAR_RXB_TRUESIZE); + } else { + /* the last fragments' length contains the full frame length */ + if (last) + size -= skb->len; + + /* in case the last fragment consisted only of the FCS */ + if (size > 0) + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, + rxb->page_offset + RXBUF_ALIGNMENT, + size, GFAR_RXB_TRUESIZE); + } /* try reuse page */ if (unlikely(page_count(page) != 1)) -- cgit v0.10.2 From 20a2b49fc538540819a0c552877086548cff8d8d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 22 Aug 2016 11:31:10 -0700 Subject: tcp: properly scale window in tcp_v[46]_reqsk_send_ack() When sending an ack in SYN_RECV state, we must scale the offered window if wscale option was negotiated and accepted. Tested: Following packetdrill test demonstrates the issue : 0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 // Establish a connection. +0 < S 0:0(0) win 20000 +0 > S. 0:0(0) ack 1 win 28960 +0 < . 1:11(10) ack 1 win 156 // check that window is properly scaled ! +0 > . 1:1(0) ack 1 win 226 Signed-off-by: Eric Dumazet Cc: Yuchung Cheng Cc: Neal Cardwell Acked-by: Yuchung Cheng Acked-by: Neal Cardwell Signed-off-by: David S. Miller diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 32b048e..7158d4f 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -814,8 +814,14 @@ static void tcp_v4_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb, u32 seq = (sk->sk_state == TCP_LISTEN) ? tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt; + /* RFC 7323 2.3 + * The window field (SEG.WND) of every outgoing segment, with the + * exception of segments, MUST be right-shifted by + * Rcv.Wind.Shift bits: + */ tcp_v4_send_ack(sock_net(sk), skb, seq, - tcp_rsk(req)->rcv_nxt, req->rsk_rcv_wnd, + tcp_rsk(req)->rcv_nxt, + req->rsk_rcv_wnd >> inet_rsk(req)->rcv_wscale, tcp_time_stamp, req->ts_recent, 0, diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 33df8b8..94f4f89 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -944,9 +944,15 @@ static void tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb, /* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV * sk->sk_state == TCP_SYN_RECV -> for Fast Open. */ + /* RFC 7323 2.3 + * The window field (SEG.WND) of every outgoing segment, with the + * exception of segments, MUST be right-shifted by + * Rcv.Wind.Shift bits: + */ tcp_v6_send_ack(sk, skb, (sk->sk_state == TCP_LISTEN) ? tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt, - tcp_rsk(req)->rcv_nxt, req->rsk_rcv_wnd, + tcp_rsk(req)->rcv_nxt, + req->rsk_rcv_wnd >> inet_rsk(req)->rcv_wscale, tcp_time_stamp, req->ts_recent, sk->sk_bound_dev_if, tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr), 0, 0); -- cgit v0.10.2 From f64f14820e2deb5db056a05d7672ee2b1c6290e5 Mon Sep 17 00:00:00 2001 From: Xander Huff Date: Mon, 22 Aug 2016 15:57:16 -0500 Subject: phy: micrel: Reenable interrupts during resume for ksz9031 Like the ksz8081, the ksz9031 has the behavior where it will clear the interrupt enable bits when leaving power down. This takes advantage of the solution provided by f5aba91. Signed-off-by: Xander Huff Signed-off-by: Nathan Sullivan Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 053e879..885ac9c 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -964,7 +964,7 @@ static struct phy_driver ksphy_driver[] = { .get_strings = kszphy_get_strings, .get_stats = kszphy_get_stats, .suspend = genphy_suspend, - .resume = genphy_resume, + .resume = kszphy_resume, }, { .phy_id = PHY_ID_KSZ8873MLL, .phy_id_mask = MICREL_PHY_ID_MASK, -- cgit v0.10.2 From 1bc261fabe866c4cdc97f52319eaa0c7ee31026e Mon Sep 17 00:00:00 2001 From: Jamie Lentin Date: Mon, 22 Aug 2016 22:47:08 +0100 Subject: net: mv88e6xxx: Fix ingress rate removal for mv6131 chips The PORT_RATE_CONTROL register works differently on 88e6095/6095f/6131 in comparison to 6123/61/65, and 0x0 disables. The distinction was lost Linux 4.1 --> 4.2 Signed-off-by: Jamie Lentin Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index d1d9d3c..7106790 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -2656,15 +2656,19 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port) return ret; } + /* Rate Control: disable ingress rate limiting. */ if (mv88e6xxx_6352_family(chip) || mv88e6xxx_6351_family(chip) || mv88e6xxx_6165_family(chip) || mv88e6xxx_6097_family(chip) || - mv88e6xxx_6185_family(chip) || mv88e6xxx_6095_family(chip) || mv88e6xxx_6320_family(chip)) { - /* Rate Control: disable ingress rate limiting. */ ret = _mv88e6xxx_reg_write(chip, REG_PORT(port), PORT_RATE_CONTROL, 0x0001); if (ret) return ret; + } else if (mv88e6xxx_6185_family(chip) || mv88e6xxx_6095_family(chip)) { + ret = _mv88e6xxx_reg_write(chip, REG_PORT(port), + PORT_RATE_CONTROL, 0x0000); + if (ret) + return ret; } /* Port Control 1: disable trunking, disable sending -- cgit v0.10.2 From 53080fe9c451e7625e71b91c384e7bef1be72b00 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 23 Aug 2016 09:48:20 -0300 Subject: net: lpc_eth: Check clk_prepare_enable() error clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of failure While at it, replace __lpc_eth_clock_enable() with a plain clk_prepare_enable/clk_disable_unprepare() call in order to simplify the code. Signed-off-by: Fabio Estevam Acked-by: Vladimir Zapolskiy Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index 4d4ecba..8e13ec8 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -475,14 +475,6 @@ static void __lpc_get_mac(struct netdata_local *pldat, u8 *mac) mac[5] = tmp >> 8; } -static void __lpc_eth_clock_enable(struct netdata_local *pldat, bool enable) -{ - if (enable) - clk_prepare_enable(pldat->clk); - else - clk_disable_unprepare(pldat->clk); -} - static void __lpc_params_setup(struct netdata_local *pldat) { u32 tmp; @@ -1056,7 +1048,7 @@ static int lpc_eth_close(struct net_device *ndev) writel(0, LPC_ENET_MAC2(pldat->net_base)); spin_unlock_irqrestore(&pldat->lock, flags); - __lpc_eth_clock_enable(pldat, false); + clk_disable_unprepare(pldat->clk); return 0; } @@ -1197,11 +1189,14 @@ static int lpc_eth_ioctl(struct net_device *ndev, struct ifreq *req, int cmd) static int lpc_eth_open(struct net_device *ndev) { struct netdata_local *pldat = netdev_priv(ndev); + int ret; if (netif_msg_ifup(pldat)) dev_dbg(&pldat->pdev->dev, "enabling %s\n", ndev->name); - __lpc_eth_clock_enable(pldat, true); + ret = clk_prepare_enable(pldat->clk); + if (ret) + return ret; /* Suspended PHY makes LPC ethernet core block, so resume now */ phy_resume(ndev->phydev); @@ -1320,7 +1315,9 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) } /* Enable network clock */ - __lpc_eth_clock_enable(pldat, true); + ret = clk_prepare_enable(pldat->clk); + if (ret) + goto err_out_clk_put; /* Map IO space */ pldat->net_base = ioremap(res->start, resource_size(res)); @@ -1454,6 +1451,7 @@ err_out_iounmap: iounmap(pldat->net_base); err_out_disable_clocks: clk_disable_unprepare(pldat->clk); +err_out_clk_put: clk_put(pldat->clk); err_out_free_dev: free_netdev(ndev); -- cgit v0.10.2 From a8184003c0bb1d6362c2af76c560b3caae6832cb Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Tue, 23 Aug 2016 16:31:28 +0200 Subject: dwc_eth_qos: fix interrupt enable race We currently enable interrupts before we enable NAPI. If an RX interrupt hits before we enabled NAPI then the NAPI callback is never called and we leave the hardware with RX interrupts disabled, which of course leads us to never handling received packets. Fix this by moving the interrupt enable to after we've enable NAPI and the reclaim tasklet. Fixes: cd5e41234729 ("dwc_eth_qos: do phy_start before resetting hardware") Signed-off-by: Rabin Vincent Signed-off-by: Lars Persson Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/synopsys/dwc_eth_qos.c b/drivers/net/ethernet/synopsys/dwc_eth_qos.c index 9f159a7..5a3941b 100644 --- a/drivers/net/ethernet/synopsys/dwc_eth_qos.c +++ b/drivers/net/ethernet/synopsys/dwc_eth_qos.c @@ -1622,13 +1622,7 @@ static void dwceqos_init_hw(struct net_local *lp) DWCEQOS_MMC_CTRL_RSTONRD); dwceqos_enable_mmc_interrupt(lp); - /* Enable Interrupts */ - dwceqos_write(lp, REG_DWCEQOS_DMA_CH0_IE, - DWCEQOS_DMA_CH0_IE_NIE | - DWCEQOS_DMA_CH0_IE_RIE | DWCEQOS_DMA_CH0_IE_TIE | - DWCEQOS_DMA_CH0_IE_AIE | - DWCEQOS_DMA_CH0_IE_FBEE); - + dwceqos_write(lp, REG_DWCEQOS_DMA_CH0_IE, 0); dwceqos_write(lp, REG_DWCEQOS_MAC_IE, 0); dwceqos_write(lp, REG_DWCEQOS_MAC_CFG, DWCEQOS_MAC_CFG_IPC | @@ -1905,6 +1899,15 @@ static int dwceqos_open(struct net_device *ndev) netif_start_queue(ndev); tasklet_enable(&lp->tx_bdreclaim_tasklet); + /* Enable Interrupts -- do this only after we enable NAPI and the + * tasklet. + */ + dwceqos_write(lp, REG_DWCEQOS_DMA_CH0_IE, + DWCEQOS_DMA_CH0_IE_NIE | + DWCEQOS_DMA_CH0_IE_RIE | DWCEQOS_DMA_CH0_IE_TIE | + DWCEQOS_DMA_CH0_IE_AIE | + DWCEQOS_DMA_CH0_IE_FBEE); + return 0; } -- cgit v0.10.2 From 232cb53a45965f8789fbf0a9a1962f8c67ab1a3c Mon Sep 17 00:00:00 2001 From: Lance Richardson Date: Tue, 23 Aug 2016 11:40:52 -0400 Subject: sctp: fix overrun in sctp_diag_dump_one() The function sctp_diag_dump_one() currently performs a memcpy() of 64 bytes from a 16 byte field into another 16 byte field. Fix by using correct size, use sizeof to obtain correct size instead of using a hard-coded constant. Fixes: 8f840e47f190 ("sctp: add the sctp_diag.c file") Signed-off-by: Lance Richardson Reviewed-by: Xin Long Acked-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller diff --git a/net/sctp/sctp_diag.c b/net/sctp/sctp_diag.c index bb69153..f3508aa 100644 --- a/net/sctp/sctp_diag.c +++ b/net/sctp/sctp_diag.c @@ -424,11 +424,13 @@ static int sctp_diag_dump_one(struct sk_buff *in_skb, paddr.v4.sin_family = AF_INET; } else { laddr.v6.sin6_port = req->id.idiag_sport; - memcpy(&laddr.v6.sin6_addr, req->id.idiag_src, 64); + memcpy(&laddr.v6.sin6_addr, req->id.idiag_src, + sizeof(laddr.v6.sin6_addr)); laddr.v6.sin6_family = AF_INET6; paddr.v6.sin6_port = req->id.idiag_dport; - memcpy(&paddr.v6.sin6_addr, req->id.idiag_dst, 64); + memcpy(&paddr.v6.sin6_addr, req->id.idiag_dst, + sizeof(paddr.v6.sin6_addr)); paddr.v6.sin6_family = AF_INET6; } -- cgit v0.10.2 From 75d855a5e93e6f3d9b37a8719d69a5318f051453 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 23 Aug 2016 09:57:51 -0700 Subject: udp: get rid of SLAB_DESTROY_BY_RCU allocations After commit ca065d0cf80f ("udp: no longer use SLAB_DESTROY_BY_RCU") we do not need this special allocation mode anymore, even if it is harmless. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 00d18c5..5fdcb8d 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2216,7 +2216,6 @@ struct proto udp_prot = { .sysctl_wmem = &sysctl_udp_wmem_min, .sysctl_rmem = &sysctl_udp_rmem_min, .obj_size = sizeof(struct udp_sock), - .slab_flags = SLAB_DESTROY_BY_RCU, .h.udp_table = &udp_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udp_setsockopt, diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c index 3b3efbd..2eea073 100644 --- a/net/ipv4/udplite.c +++ b/net/ipv4/udplite.c @@ -55,7 +55,6 @@ struct proto udplite_prot = { .unhash = udp_lib_unhash, .get_port = udp_v4_get_port, .obj_size = sizeof(struct udp_sock), - .slab_flags = SLAB_DESTROY_BY_RCU, .h.udp_table = &udplite_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udp_setsockopt, diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 81e2f98..19ac3a1 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1460,7 +1460,6 @@ struct proto udpv6_prot = { .sysctl_wmem = &sysctl_udp_wmem_min, .sysctl_rmem = &sysctl_udp_rmem_min, .obj_size = sizeof(struct udp6_sock), - .slab_flags = SLAB_DESTROY_BY_RCU, .h.udp_table = &udp_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udpv6_setsockopt, diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c index 9cf097e..fd6ef41 100644 --- a/net/ipv6/udplite.c +++ b/net/ipv6/udplite.c @@ -50,7 +50,6 @@ struct proto udplitev6_prot = { .unhash = udp_lib_unhash, .get_port = udp_v6_get_port, .obj_size = sizeof(struct udp6_sock), - .slab_flags = SLAB_DESTROY_BY_RCU, .h.udp_table = &udplite_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udpv6_setsockopt, -- cgit v0.10.2 From 7b996243fab46092fb3a29c773c54be8152366e4 Mon Sep 17 00:00:00 2001 From: Soheil Hassas Yeganeh Date: Tue, 23 Aug 2016 18:22:33 -0400 Subject: tun: fix transmit timestamp support Instead of using sock_tx_timestamp, use skb_tx_timestamp to record software transmit timestamp of a packet. sock_tx_timestamp resets and overrides the tx_flags of the skb. The function is intended to be called from within the protocol layer when creating the skb, not from a device driver. This is inconsistent with other drivers and will cause issues for TCP. In TCP, we intend to sample the timestamps for the last byte for each sendmsg/sendpage. For that reason, tcp_sendmsg calls tcp_tx_timestamp only with the last skb that it generates. For example, if a 128KB message is split into two 64KB packets we want to sample the SND timestamp of the last packet. The current code in the tun driver, however, will result in sampling the SND timestamp for both packets. Also, when the last packet is split into smaller packets for retranmission (see tcp_fragment), the tun driver will record timestamps for all of the retransmitted packets and not only the last packet. Fixes: eda297729171 (tun: Support software transmit time stamping.) Signed-off-by: Soheil Hassas Yeganeh Signed-off-by: Francis Yan Acked-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 9c8b5bc..6f9df37 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -894,11 +894,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) if (unlikely(skb_orphan_frags(skb, GFP_ATOMIC))) goto drop; - if (skb->sk && sk_fullsock(skb->sk)) { - sock_tx_timestamp(skb->sk, skb->sk->sk_tsflags, - &skb_shinfo(skb)->tx_flags); - sw_tx_timestamp(skb); - } + skb_tx_timestamp(skb); /* Orphan the skb - required as we might hang on to it * for indefinite time. -- cgit v0.10.2 From d7226c7a4dd19929d6df4ae04698da2fcf6f875a Mon Sep 17 00:00:00 2001 From: David Ahern Date: Tue, 23 Aug 2016 21:05:27 -0700 Subject: net: diag: Fix refcnt leak in error path destroying socket inet_diag_find_one_icsk takes a reference to a socket that is not released if sock_diag_destroy returns an error. Fix by changing tcp_diag_destroy to manage the refcnt for all cases and remove the sock_put calls from tcp_abort. Fixes: c1e64e298b8ca ("net: diag: Support destroying TCP sockets") Reported-by: Lorenzo Colitti Signed-off-by: David Ahern Signed-off-by: David S. Miller diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 032a96d..ffbb218 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3193,7 +3193,6 @@ int tcp_abort(struct sock *sk, int err) local_bh_enable(); return 0; } - sock_gen_put(sk); return -EOPNOTSUPP; } @@ -3222,7 +3221,6 @@ int tcp_abort(struct sock *sk, int err) bh_unlock_sock(sk); local_bh_enable(); release_sock(sk); - sock_put(sk); return 0; } EXPORT_SYMBOL_GPL(tcp_abort); diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c index 4d61093..a748c74 100644 --- a/net/ipv4/tcp_diag.c +++ b/net/ipv4/tcp_diag.c @@ -54,11 +54,16 @@ static int tcp_diag_destroy(struct sk_buff *in_skb, { struct net *net = sock_net(in_skb->sk); struct sock *sk = inet_diag_find_one_icsk(net, &tcp_hashinfo, req); + int err; if (IS_ERR(sk)) return PTR_ERR(sk); - return sock_diag_destroy(sk, ECONNABORTED); + err = sock_diag_destroy(sk, ECONNABORTED); + + sock_gen_put(sk); + + return err; } #endif -- cgit v0.10.2 From 27727df240c7cc84f2ba6047c6f18d5addfd25ef Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 23 Aug 2016 16:08:21 -0700 Subject: timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING When I added some extra sanity checking in timekeeping_get_ns() under CONFIG_DEBUG_TIMEKEEPING, I missed that the NMI safe __ktime_get_fast_ns() method was using timekeeping_get_ns(). Thus the locking added to the debug checks broke the NMI-safety of __ktime_get_fast_ns(). This patch open-codes the timekeeping_get_ns() logic for __ktime_get_fast_ns(), so can avoid any deadlocks in NMI. Fixes: 4ca22c2648f9 "timekeeping: Add warnings when overflows or underflows are observed" Reported-by: Steven Rostedt Reported-by: Peter Zijlstra Signed-off-by: John Stultz Cc: stable Link: http://lkml.kernel.org/r/1471993702-29148-2-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 3b65746..e07fb09 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -401,7 +401,10 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf) do { seq = raw_read_seqcount_latch(&tkf->seq); tkr = tkf->base + (seq & 0x01); - now = ktime_to_ns(tkr->base) + timekeeping_get_ns(tkr); + now = ktime_to_ns(tkr->base); + + now += clocksource_delta(tkr->read(tkr->clock), + tkr->cycle_last, tkr->mask); } while (read_seqcount_retry(&tkf->seq, seq)); return now; -- cgit v0.10.2 From a4f8f6667f099036c88f231dcad4cf233652c824 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 23 Aug 2016 16:08:22 -0700 Subject: timekeeping: Cap array access in timekeeping_debug It was reported that hibernation could fail on the 2nd attempt, where the system hangs at hibernate() -> syscore_resume() -> i8237A_resume() -> claim_dma_lock(), because the lock has already been taken. However there is actually no other process would like to grab this lock on that problematic platform. Further investigation showed that the problem is triggered by setting /sys/power/pm_trace to 1 before the 1st hibernation. Since once pm_trace is enabled, the rtc becomes unmeaningful after suspend, and meanwhile some BIOSes would like to adjust the 'invalid' RTC (e.g, smaller than 1970) to the release date of that motherboard during POST stage, thus after resumed, it may seem that the system had a significant long sleep time which is a completely meaningless value. Then in timekeeping_resume -> tk_debug_account_sleep_time, if the bit31 of the sleep time happened to be set to 1, fls() returns 32 and we add 1 to sleep_time_bin[32], which causes an out of bounds array access and therefor memory being overwritten. As depicted by System.map: 0xffffffff81c9d080 b sleep_time_bin 0xffffffff81c9d100 B dma_spin_lock the dma_spin_lock.val is set to 1, which caused this problem. This patch adds a sanity check in tk_debug_account_sleep_time() to ensure we don't index past the sleep_time_bin array. [jstultz: Problem diagnosed and original patch by Chen Yu, I've solved the issue slightly differently, but borrowed his excelent explanation of the issue here.] Fixes: 5c83545f24ab "power: Add option to log time spent in suspend" Reported-by: Janek Kozicki Reported-by: Chen Yu Signed-off-by: John Stultz Cc: linux-pm@vger.kernel.org Cc: Peter Zijlstra Cc: Xunlei Pang Cc: "Rafael J. Wysocki" Cc: stable Cc: Zhang Rui Link: http://lkml.kernel.org/r/1471993702-29148-3-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c index f6bd652..107310a 100644 --- a/kernel/time/timekeeping_debug.c +++ b/kernel/time/timekeeping_debug.c @@ -23,7 +23,9 @@ #include "timekeeping_internal.h" -static unsigned int sleep_time_bin[32] = {0}; +#define NUM_BINS 32 + +static unsigned int sleep_time_bin[NUM_BINS] = {0}; static int tk_debug_show_sleep_time(struct seq_file *s, void *data) { @@ -69,6 +71,9 @@ late_initcall(tk_debug_sleep_time_init); void tk_debug_account_sleep_time(struct timespec64 *t) { - sleep_time_bin[fls(t->tv_sec)]++; + /* Cap bin index so we don't overflow the array */ + int bin = min(fls(t->tv_sec), NUM_BINS-1); + + sleep_time_bin[bin]++; } -- cgit v0.10.2 From 2e63ad4bd5dd583871e6602f9d398b9322d358d9 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Tue, 23 Aug 2016 20:07:19 +0800 Subject: x86/apic: Do not init irq remapping if ioapic is disabled native_smp_prepare_cpus -> default_setup_apic_routing -> enable_IR_x2apic -> irq_remapping_prepare -> intel_prepare_irq_remapping -> intel_setup_irq_remapping So IR table is setup even if "noapic" boot parameter is added. As a result we crash later when the interrupt affinity is set due to a half initialized remapping infrastructure. Prevent remap initialization when IOAPIC is disabled. Signed-off-by: Wanpeng Li Cc: Peter Zijlstra Cc: Joerg Roedel Link: http://lkml.kernel.org/r/1471954039-3942-1-git-send-email-wanpeng.li@hotmail.com Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index cea4fc1..50c95af 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1623,6 +1623,9 @@ void __init enable_IR_x2apic(void) unsigned long flags; int ret, ir_stat; + if (skip_ioapic_setup) + return; + ir_stat = irq_remapping_prepare(); if (ir_stat < 0 && !x2apic_supported()) return; -- cgit v0.10.2 From abaa2274811d607679e8687b4118c4922a3517ac Mon Sep 17 00:00:00 2001 From: Anisse Astier Date: Wed, 24 Aug 2016 09:14:13 +0200 Subject: ALSA: hda/realtek - fix headset mic detection for MSI MS-B120 MSI Cubi MS-B120 needs the same fixup as the Gigabyte BXBT-2807 for its mic to work. They both use a single 3-way jack for both mic and headset with an ALC283 codec, with the same pins used. Cc: Daniel Drake Signed-off-by: Anisse Astier Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 574b1b4..7100f05 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4828,7 +4828,7 @@ enum { ALC293_FIXUP_DELL1_MIC_NO_PRESENCE, ALC292_FIXUP_TPT440_DOCK, ALC292_FIXUP_TPT440, - ALC283_FIXUP_BXBT2807_MIC, + ALC283_FIXUP_HEADSET_MIC, ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED, ALC282_FIXUP_ASPIRE_V5_PINS, ALC280_FIXUP_HP_GPIO4, @@ -5321,7 +5321,7 @@ static const struct hda_fixup alc269_fixups[] = { .chained = true, .chain_id = ALC292_FIXUP_TPT440_DOCK, }, - [ALC283_FIXUP_BXBT2807_MIC] = { + [ALC283_FIXUP_HEADSET_MIC] = { .type = HDA_FIXUP_PINS, .v.pins = (const struct hda_pintbl[]) { { 0x19, 0x04a110f0 }, @@ -5651,7 +5651,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x10cf, 0x1757, "Lifebook E752", ALC269_FIXUP_LIFEBOOK_HP_PIN), SND_PCI_QUIRK(0x10cf, 0x1845, "Lifebook U904", ALC269_FIXUP_LIFEBOOK_EXTMIC), SND_PCI_QUIRK(0x144d, 0xc109, "Samsung Ativ book 9 (NP900X3G)", ALC269_FIXUP_INV_DMIC), - SND_PCI_QUIRK(0x1458, 0xfa53, "Gigabyte BXBT-2807", ALC283_FIXUP_BXBT2807_MIC), + SND_PCI_QUIRK(0x1458, 0xfa53, "Gigabyte BXBT-2807", ALC283_FIXUP_HEADSET_MIC), + SND_PCI_QUIRK(0x1462, 0xb120, "MSI Cubi MS-B120", ALC283_FIXUP_HEADSET_MIC), SND_PCI_QUIRK(0x17aa, 0x20f2, "Thinkpad SL410/510", ALC269_FIXUP_SKU_IGNORE), SND_PCI_QUIRK(0x17aa, 0x215e, "Thinkpad L512", ALC269_FIXUP_SKU_IGNORE), SND_PCI_QUIRK(0x17aa, 0x21b8, "Thinkpad Edge 14", ALC269_FIXUP_SKU_IGNORE), -- cgit v0.10.2 From 588deb614a0d3caa596dd8eba8c4d31eaaeb89b9 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Tue, 9 Aug 2016 11:03:56 +0100 Subject: MAINTAINERS: Add ARM ARCHITECTED TIMER entry The ARM architected timer driver falls under the drivers/clocksource/ catch-all in MAINTAINERS, and get_maintainers.pl doesn't suggest a number of people who should be Cc'd. The ARM architected timer is a core component of ARMv7+VE and ARMv8, and is critical to the correct operation of both architecture ports (and their respective KVM code), and patches to it should have review by knowledgeable interested parties. This patch adds a MAINTAINERS entry for the driver and its low-level arch components, such that get_maintainer.pl will always include relevant interested parties for modifications to the driver. For the timebeing, this means myself and Marc Zyngier. Signed-off-by: Mark Rutland Acked-by: Marc Zyngier Cc: Catalin Marinas Cc: Daniel Lezcano Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1470737036-2082-1-git-send-email-mark.rutland@arm.com Signed-off-by: Thomas Gleixner diff --git a/MAINTAINERS b/MAINTAINERS index 0bbe4b1..4705c94 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -881,6 +881,15 @@ S: Supported F: drivers/gpu/drm/arc/ F: Documentation/devicetree/bindings/display/snps,arcpgu.txt +ARM ARCHITECTED TIMER DRIVER +M: Mark Rutland +M: Marc Zyngier +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Maintained +F: arch/arm/include/asm/arch_timer.h +F: arch/arm64/include/asm/arch_timer.h +F: drivers/clocksource/arm_arch_timer.c + ARM HDLCD DRM DRIVER M: Liviu Dudau S: Supported -- cgit v0.10.2 From aa8c0f1ad7e862147f4efb32bbb71ff66eb38caa Mon Sep 17 00:00:00 2001 From: Baoyou Xie Date: Tue, 23 Aug 2016 23:19:29 +0800 Subject: clocksource/drivers/pxa: Fix include files for compilation We get 1 warning about global functions without a declaration in the clocksource/drivers/pxa driver when building with W=1: drivers/clocksource/pxa_timer.c:221:13: warning: no previous prototype for 'pxa_timer_nodt_init' [-Wmissing-prototypes] void __init pxa_timer_nodt_init(int irq, void __iomem *base, In fact, this function is declared in pxa.h, so this patch add missing header dependencies. Signed-off-by: Baoyou Xie Reviewed-by: Arnd Bergmann Cc: daniel.lezcano@linaro.org Cc: xie.baoyou@zte.com.cn Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1471965569-4104-1-git-send-email-baoyou.xie@linaro.org Signed-off-by: Thomas Gleixner diff --git a/drivers/clocksource/pxa_timer.c b/drivers/clocksource/pxa_timer.c index 937e10b..3e1cb51 100644 --- a/drivers/clocksource/pxa_timer.c +++ b/drivers/clocksource/pxa_timer.c @@ -21,6 +21,8 @@ #include #include +#include + #include #define OSMR0 0x00 /* OS Timer 0 Match Register */ -- cgit v0.10.2 From b70cd2de0ea85f5ab51a1d01893cba6415011b9d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 24 Aug 2016 14:11:30 +0300 Subject: spi: pxa2xx-pci: fix ACPI-based enumeration of SPI devices Slave devices are not enumerated by ACPI data because the ACPI handle for the core driver is NULL if it was enumerated by PCI. Propagate firmware node handle of the PCI device to the platform device. Suggested-by: Mika Westerberg Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c index f3df522..58d2d48 100644 --- a/drivers/spi/spi-pxa2xx-pci.c +++ b/drivers/spi/spi-pxa2xx-pci.c @@ -214,6 +214,7 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev, return PTR_ERR(ssp->clk); memset(&pi, 0, sizeof(pi)); + pi.fwnode = dev->dev.fwnode; pi.parent = &dev->dev; pi.name = "pxa2xx-spi"; pi.id = ssp->port_id; -- cgit v0.10.2 From 40d9c32525cba79130612650b1abc47c0c0f19a8 Mon Sep 17 00:00:00 2001 From: Aleksandr Makarov Date: Wed, 24 Aug 2016 13:06:22 +0300 Subject: USB: serial: option: add WeTelecom 0x6802 and 0x6803 products These product IDs are listed in Windows driver. 0x6803 corresponds to WeTelecom WM-D300. 0x6802 name is unknown. Signed-off-by: Aleksandr Makarov Cc: stable Signed-off-by: Johan Hovold diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index bb6a711..9894e34 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -528,6 +528,8 @@ static void option_instat_callback(struct urb *urb); /* WeTelecom products */ #define WETELECOM_VENDOR_ID 0x22de #define WETELECOM_PRODUCT_WMD200 0x6801 +#define WETELECOM_PRODUCT_6802 0x6802 +#define WETELECOM_PRODUCT_WMD300 0x6803 struct option_blacklist_info { /* bitmask of interface numbers blacklisted for send_setup */ @@ -1996,6 +1998,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) }, { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) }, { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD200, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_6802, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD300, 0xff, 0xff, 0xff) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); -- cgit v0.10.2 From f74bdd4cb5d0d4c3e89919e850e0bbb8789f32f9 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Tue, 16 Aug 2016 21:49:45 +0200 Subject: hwrng: mxc-rnga - Fix Kconfig dependency We can directly depend on SOC_IMX31 since commit c9ee94965dce ("ARM: imx: deconstruct mxc_rnga initialization") Since that commit, CONFIG_HW_RANDOM_MXC_RNGA could not be switched on with unknown symbol ARCH_HAS_RNGA and mxc-rnga.o can't be generated with ARCH=arm make M=drivers/char/hw_random Previously, HW_RANDOM_MXC_RNGA required ARCH_HAS_RNGA which was based on IMX_HAVE_PLATFORM_MXC_RNGA && ARCH_MXC. IMX_HAVE_PLATFORM_MXC_RNGA was based on SOC_IMX31. Fixes: c9ee94965dce ("ARM: imx: deconstruct mxc_rnga initialization") Signed-off-by: Fabian Frederick Acked-by: Arnd Bergmann Signed-off-by: Herbert Xu diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 56ad5a5..8c0770b 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -244,7 +244,7 @@ config HW_RANDOM_TX4939 config HW_RANDOM_MXC_RNGA tristate "Freescale i.MX RNGA Random Number Generator" - depends on ARCH_HAS_RNGA + depends on SOC_IMX31 default HW_RANDOM ---help--- This driver provides kernel-side support for the Random Number -- cgit v0.10.2 From 10bb087ce381c812cd81a65ffd5e6f83e6399291 Mon Sep 17 00:00:00 2001 From: Giovanni Cabiddu Date: Thu, 18 Aug 2016 19:53:36 +0100 Subject: crypto: qat - fix aes-xts key sizes Increase value of supported key sizes for qat_aes_xts. aes-xts keys consists of keys of equal size concatenated. Fixes: def14bfaf30d ("crypto: qat - add support for ctr(aes) and xts(aes)") Cc: stable@vger.kernel.org Reported-by: Wenqian Yu Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index 769148d..20f35df 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -1260,8 +1260,8 @@ static struct crypto_alg qat_algs[] = { { .setkey = qat_alg_ablkcipher_xts_setkey, .decrypt = qat_alg_ablkcipher_decrypt, .encrypt = qat_alg_ablkcipher_encrypt, - .min_keysize = AES_MIN_KEY_SIZE, - .max_keysize = AES_MAX_KEY_SIZE, + .min_keysize = 2 * AES_MIN_KEY_SIZE, + .max_keysize = 2 * AES_MAX_KEY_SIZE, .ivsize = AES_BLOCK_SIZE, }, }, -- cgit v0.10.2 From 901d3d4fee83e9407d91e7178048e2fed6c91f6b Mon Sep 17 00:00:00 2001 From: Li Zhong Date: Wed, 24 Aug 2016 15:34:40 +0800 Subject: crypto: vmx - fix null dereference in p8_aes_xts_crypt walk.iv is not assigned a value in blkcipher_walk_init. It makes iv uninitialized. It is possibly a null value(as shown below), which is then used by aes_p8_encrypt. This patch moves iv = walk.iv after blkcipher_walk_virt, in which walk.iv is set. [17856.268050] Unable to handle kernel paging request for data at address 0x00000000 [17856.268212] Faulting instruction address: 0xd000000002ff04bc 7:mon> t [link register ] d000000002ff47b8 p8_aes_xts_crypt+0x168/0x2a0 [vmx_crypto] (938) [c000000013b77960] d000000002ff4794 p8_aes_xts_crypt+0x144/0x2a0 [vmx_crypto] (unreliable) [c000000013b77a70] c000000000544d64 skcipher_decrypt_blkcipher+0x64/0x80 [c000000013b77ac0] d000000003c0175c crypt_convert+0x53c/0x620 [dm_crypt] [c000000013b77ba0] d000000003c043fc kcryptd_crypt+0x3cc/0x440 [dm_crypt] [c000000013b77c50] c0000000000f3070 process_one_work+0x1e0/0x590 [c000000013b77ce0] c0000000000f34c8 worker_thread+0xa8/0x660 [c000000013b77d80] c0000000000fc0b0 kthread+0x110/0x130 [c000000013b77e30] c0000000000098f0 ret_from_kernel_thread+0x5c/0x6c Signed-off-by: Li Zhong Signed-off-by: Herbert Xu diff --git a/drivers/crypto/vmx/aes_xts.c b/drivers/crypto/vmx/aes_xts.c index cfb2541..24353ec3 100644 --- a/drivers/crypto/vmx/aes_xts.c +++ b/drivers/crypto/vmx/aes_xts.c @@ -129,8 +129,8 @@ static int p8_aes_xts_crypt(struct blkcipher_desc *desc, blkcipher_walk_init(&walk, dst, src, nbytes); - iv = (u8 *)walk.iv; ret = blkcipher_walk_virt(desc, &walk); + iv = walk.iv; memset(tweak, 0, AES_BLOCK_SIZE); aes_p8_encrypt(iv, tweak, &ctx->tweak_key); -- cgit v0.10.2 From 8b6a3fe8fab97716990a3abde1a01fb5a34552a3 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 24 Aug 2016 10:07:14 +0100 Subject: perf/core: Use this_cpu_ptr() when stopping AUX events When tearing down an AUX buf for an event via perf_mmap_close(), __perf_event_output_stop() is called on the event's CPU to ensure that trace generation is halted before the process of unmapping and freeing the buffer pages begins. The callback is performed via cpu_function_call(), which ensures that it runs with interrupts disabled and is therefore not preemptible. Unfortunately, the current code grabs the per-cpu context pointer using get_cpu_ptr(), which unnecessarily disables preemption and doesn't pair the call with put_cpu_ptr(), leading to a preempt_count() imbalance and a BUG when freeing the AUX buffer later on: WARNING: CPU: 1 PID: 2249 at kernel/events/ring_buffer.c:539 __rb_free_aux+0x10c/0x120 Modules linked in: [...] Call Trace: [] dump_stack+0x4f/0x72 [] __warn+0xc6/0xe0 [] warn_slowpath_null+0x18/0x20 [] __rb_free_aux+0x10c/0x120 [] rb_free_aux+0x13/0x20 [] perf_mmap_close+0x29e/0x2f0 [] ? perf_iterate_ctx+0xe0/0xe0 [] remove_vma+0x25/0x60 [] exit_mmap+0x106/0x140 [] mmput+0x1c/0xd0 [] do_exit+0x253/0xbf0 [] do_group_exit+0x3e/0xb0 [] get_signal+0x249/0x640 [] do_signal+0x23/0x640 [] ? _raw_write_unlock_irq+0x12/0x30 [] ? _raw_spin_unlock_irq+0x9/0x10 [] ? __schedule+0x2c6/0x710 [] exit_to_usermode_loop+0x74/0x90 [] prepare_exit_to_usermode+0x26/0x30 [] retint_user+0x8/0x10 This patch uses this_cpu_ptr() instead of get_cpu_ptr(), since preemption is already disabled by the caller. Signed-off-by: Will Deacon Reviewed-by: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vince Weaver Fixes: 95ff4ca26c49 ("perf/core: Free AUX pages in unmap path") Link: http://lkml.kernel.org/r/20160824091905.GA16944@arm.com Signed-off-by: Ingo Molnar diff --git a/kernel/events/core.c b/kernel/events/core.c index 5650f53..3cfabdf 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6166,7 +6166,7 @@ static int __perf_pmu_output_stop(void *info) { struct perf_event *event = info; struct pmu *pmu = event->pmu; - struct perf_cpu_context *cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); + struct perf_cpu_context *cpuctx = this_cpu_ptr(pmu->pmu_cpu_context); struct remote_output ro = { .rb = event->rb, }; -- cgit v0.10.2 From 15dacf880e49ce3ecee05eb1a0c6b8e363dbacdc Mon Sep 17 00:00:00 2001 From: "mhiramat@kernel.org" Date: Mon, 15 Aug 2016 18:40:57 +0900 Subject: brcmfmac: Check rtnl_lock is locked when removing interface MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Check rtnl_lock is locked in brcmf_p2p_ifp_removed() by passing rtnl_locked flag. Actually the caller brcmf_del_if() checks whether the rtnl_lock is locked, but doesn't pass it to brcmf_p2p_ifp_removed(). Without this fix, wpa_supplicant goes softlockup with rtnl_lock holding (this means all other process using netlink are locked up too) e.g. [ 4495.876627] INFO: task wpa_supplicant:7307 blocked for more than 10 seconds. [ 4495.876632] Tainted: G W 4.8.0-rc1+ #8 [ 4495.876635] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4495.876638] wpa_supplicant D ffff974c647b39a0 0 7307 1 0x00000000 [ 4495.876644] ffff974c647b39a0 0000000000000000 ffff974c00000000 ffff974c7dc59c58 [ 4495.876651] ffff974c6b7417c0 ffff974c645017c0 ffff974c647b4000 ffffffff86f16c08 [ 4495.876657] ffff974c645017c0 0000000000000246 00000000ffffffff ffff974c647b39b8 [ 4495.876664] Call Trace: [ 4495.876671] [] schedule+0x3c/0x90 [ 4495.876676] [] schedule_preempt_disabled+0x15/0x20 [ 4495.876682] [] mutex_lock_nested+0x176/0x3b0 [ 4495.876686] [] ? rtnl_lock+0x17/0x20 [ 4495.876690] [] rtnl_lock+0x17/0x20 [ 4495.876720] [] brcmf_p2p_ifp_removed+0x4d/0x70 [brcmfmac] [ 4495.876741] [] brcmf_remove_interface+0x196/0x1b0 [brcmfmac] [ 4495.876760] [] brcmf_p2p_del_vif+0x111/0x220 [brcmfmac] [ 4495.876777] [] brcmf_cfg80211_del_iface+0x21b/0x270 [brcmfmac] [ 4495.876820] [] nl80211_del_interface+0xfe/0x3a0 [cfg80211] [ 4495.876825] [] genl_family_rcv_msg+0x1b5/0x370 [ 4495.876832] [] ? trace_hardirqs_on+0xd/0x10 [ 4495.876836] [] genl_rcv_msg+0x7d/0xb0 [ 4495.876839] [] ? genl_family_rcv_msg+0x370/0x370 [ 4495.876846] [] netlink_rcv_skb+0x97/0xb0 [ 4495.876849] [] genl_rcv+0x28/0x40 [ 4495.876854] [] netlink_unicast+0x1d3/0x2f0 [ 4495.876860] [] ? netlink_unicast+0x14b/0x2f0 [ 4495.876866] [] netlink_sendmsg+0x2eb/0x3a0 [ 4495.876870] [] sock_sendmsg+0x38/0x50 [ 4495.876874] [] ___sys_sendmsg+0x27f/0x290 [ 4495.876882] [] ? mntput_no_expire+0x5/0x3f0 [ 4495.876888] [] ? mntput_no_expire+0x8e/0x3f0 [ 4495.876894] [] ? mntput_no_expire+0x5/0x3f0 [ 4495.876899] [] ? mntput+0x24/0x40 [ 4495.876904] [] ? __fput+0x190/0x200 [ 4495.876909] [] __sys_sendmsg+0x45/0x80 [ 4495.876914] [] SyS_sendmsg+0x12/0x20 [ 4495.876918] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 4495.876924] [] ? trace_hardirqs_off_caller+0x1f/0xc0 Signed-off-by: Masami Hiramatsu Acked-by: Rafał Miłecki Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c index 8d16f02..65e8c87 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c @@ -743,7 +743,7 @@ static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx, * serious troublesome side effects. The p2p module will clean * up the ifp if needed. */ - brcmf_p2p_ifp_removed(ifp); + brcmf_p2p_ifp_removed(ifp, rtnl_locked); kfree(ifp); } } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c index 66f942f..de19c7c 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c @@ -2297,7 +2297,7 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) return err; } -void brcmf_p2p_ifp_removed(struct brcmf_if *ifp) +void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked) { struct brcmf_cfg80211_info *cfg; struct brcmf_cfg80211_vif *vif; @@ -2306,9 +2306,11 @@ void brcmf_p2p_ifp_removed(struct brcmf_if *ifp) vif = ifp->vif; cfg = wdev_to_cfg(&vif->wdev); cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; - rtnl_lock(); + if (!rtnl_locked) + rtnl_lock(); cfg80211_unregister_wdev(&vif->wdev); - rtnl_unlock(); + if (!rtnl_locked) + rtnl_unlock(); brcmf_free_vif(vif); } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.h index a3bd18c..8ce9447 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.h @@ -155,7 +155,7 @@ struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev); int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg, enum brcmf_fil_p2p_if_types if_type); -void brcmf_p2p_ifp_removed(struct brcmf_if *ifp); +void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked); int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev); void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev); int brcmf_p2p_scan_prep(struct wiphy *wiphy, -- cgit v0.10.2 From b64abcb7dae6060c67ab0e548da3ef923c49641d Mon Sep 17 00:00:00 2001 From: "mhiramat@kernel.org" Date: Mon, 15 Aug 2016 18:41:12 +0900 Subject: brcmfmac: Change vif_event_lock to spinlock Change vif_event_lock to spinlock from mutex, since this lock is used in wait_event_timeout() via vif_event_equals(). This caused a warning report as below. As far as I can see, this lock protects regions where updating structure members, not function calls. Also, since those regions are not called from interrupt handlers (of course, it was a mutex), spin_lock is used instead of spin_lock_irqsave. [ 186.678550] ------------[ cut here ]------------ [ 186.678556] WARNING: CPU: 2 PID: 7140 at /home/mhiramat/ksrc/linux/kernel/sched/core.c:7545 __might_sleep+0x7c/0x80 [ 186.678560] do not call blocking ops when !TASK_RUNNING; state=2 set at [] prepare_to_wait_event+0x60/0x100 [ 186.678560] Modules linked in: brcmfmac xt_CHECKSUM rfcomm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_addrtype br_netfilter xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_raw ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_filter ip6_tables iptable_raw iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_filter ip_tables x_tables bnep nls_iso8859_1 i2c_designware_platform i2c_designware_core snd_hda_codec_hdmi snd_hda_codec_realtek dcdbas snd_hda_codec_generic snd_hda_intel snd_hda_codec intel_rapl snd_hda_core x86_pkg_temp_thermal intel_powerclamp coretemp [ 186.678594] snd_pcm crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 joydev glue_helper snd_hwdep lrw gf128mul uvcvideo ablk_helper snd_seq_midi cryptd snd_seq_midi_event snd_rawmidi videobuf2_vmalloc videobuf2_memops snd_seq input_leds videobuf2_v4l2 cfg80211 videobuf2_core snd_timer videodev serio_raw btusb snd_seq_device media btrtl rtsx_pci_ms snd mei_me memstick hid_multitouch mei soundcore brcmutil idma64 virt_dma intel_lpss_pci processor_thermal_device intel_soc_dts_iosf hci_uart btbcm btqca btintel bluetooth int3403_thermal dell_smo8800 intel_lpss_acpi intel_lpss int3402_thermal int340x_thermal_zone intel_hid mac_hid int3400_thermal shpchp sparse_keymap acpi_pad acpi_thermal_rel acpi_als kfifo_buf industrialio kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq [ 186.678631] usbhid nouveau ttm i915 rtsx_pci_sdmmc mxm_wmi i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops psmouse drm ahci rtsx_pci nvme nvme_core libahci i2c_hid hid pinctrl_sunrisepoint video wmi pinctrl_intel fjes [last unloaded: brcmfmac] [ 186.678646] CPU: 2 PID: 7140 Comm: wpa_supplicant Not tainted 4.8.0-rc1+ #8 [ 186.678647] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00 04/07/2016 [ 186.678648] 0000000000000000 ffff9d8c64b5b900 ffffffff98442f23 ffff9d8c64b5b950 [ 186.678651] 0000000000000000 ffff9d8c64b5b940 ffffffff9808b22b 00001d790000000d [ 186.678653] ffffffff98c75e78 000000000000026c 0000000000000000 ffff9d8c2706d058 [ 186.678655] Call Trace: [ 186.678659] [] dump_stack+0x85/0xc2 [ 186.678666] [] __warn+0xcb/0xf0 [ 186.678668] [] warn_slowpath_fmt+0x4f/0x60 [ 186.678671] [] ? prepare_to_wait_event+0x60/0x100 [ 186.678672] [] ? prepare_to_wait_event+0x60/0x100 [ 186.678674] [] __might_sleep+0x7c/0x80 [ 186.678680] [] mutex_lock_nested+0x33/0x3b0 [ 186.678682] [] ? trace_hardirqs_on+0xd/0x10 [ 186.678689] [] brcmf_cfg80211_wait_vif_event+0xcd/0x130 [brcmfmac] [ 186.678691] [] ? wake_atomic_t_function+0x60/0x60 [ 186.678697] [] brcmf_p2p_del_vif+0xf9/0x220 [brcmfmac] [ 186.678702] [] brcmf_cfg80211_del_iface+0x21b/0x270 [brcmfmac] [ 186.678716] [] nl80211_del_interface+0xfe/0x3a0 [cfg80211] [ 186.678718] [] genl_family_rcv_msg+0x1b5/0x370 [ 186.678720] [] ? trace_hardirqs_on+0xd/0x10 [ 186.678721] [] genl_rcv_msg+0x7d/0xb0 [ 186.678722] [] ? genl_family_rcv_msg+0x370/0x370 [ 186.678724] [] netlink_rcv_skb+0x97/0xb0 [ 186.678726] [] genl_rcv+0x28/0x40 [ 186.678727] [] netlink_unicast+0x1d3/0x2f0 [ 186.678729] [] ? netlink_unicast+0x14b/0x2f0 [ 186.678731] [] netlink_sendmsg+0x2eb/0x3a0 [ 186.678733] [] sock_sendmsg+0x38/0x50 [ 186.678734] [] ___sys_sendmsg+0x27f/0x290 [ 186.678737] [] ? mntput_no_expire+0x5/0x3f0 [ 186.678739] [] ? mntput_no_expire+0x8e/0x3f0 [ 186.678741] [] ? mntput_no_expire+0x5/0x3f0 [ 186.678743] [] ? mntput+0x24/0x40 [ 186.678744] [] ? __fput+0x190/0x200 [ 186.678746] [] __sys_sendmsg+0x45/0x80 [ 186.678748] [] SyS_sendmsg+0x12/0x20 [ 186.678749] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 186.678751] [] ? trace_hardirqs_off_caller+0x1f/0xc0 [ 186.678752] ---[ end trace e224d66c5d8408b5 ]--- Signed-off-by: Masami Hiramatsu Acked-by: Arend van Spriel Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 2628d5e..5db56a7 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -5635,7 +5635,7 @@ static s32 brcmf_notify_vif_event(struct brcmf_if *ifp, ifevent->action, ifevent->flags, ifevent->ifidx, ifevent->bsscfgidx); - mutex_lock(&event->vif_event_lock); + spin_lock(&event->vif_event_lock); event->action = ifevent->action; vif = event->vif; @@ -5643,7 +5643,7 @@ static s32 brcmf_notify_vif_event(struct brcmf_if *ifp, case BRCMF_E_IF_ADD: /* waiting process may have timed out */ if (!cfg->vif_event.vif) { - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); return -EBADF; } @@ -5654,24 +5654,24 @@ static s32 brcmf_notify_vif_event(struct brcmf_if *ifp, ifp->ndev->ieee80211_ptr = &vif->wdev; SET_NETDEV_DEV(ifp->ndev, wiphy_dev(cfg->wiphy)); } - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); wake_up(&event->vif_wq); return 0; case BRCMF_E_IF_DEL: - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); /* event may not be upon user request */ if (brcmf_cfg80211_vif_event_armed(cfg)) wake_up(&event->vif_wq); return 0; case BRCMF_E_IF_CHANGE: - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); wake_up(&event->vif_wq); return 0; default: - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); break; } return -EINVAL; @@ -5792,7 +5792,7 @@ static void wl_deinit_priv(struct brcmf_cfg80211_info *cfg) static void init_vif_event(struct brcmf_cfg80211_vif_event *event) { init_waitqueue_head(&event->vif_wq); - mutex_init(&event->vif_event_lock); + spin_lock_init(&event->vif_event_lock); } static s32 brcmf_dongle_roam(struct brcmf_if *ifp) @@ -6691,9 +6691,9 @@ static inline bool vif_event_equals(struct brcmf_cfg80211_vif_event *event, { u8 evt_action; - mutex_lock(&event->vif_event_lock); + spin_lock(&event->vif_event_lock); evt_action = event->action; - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); return evt_action == action; } @@ -6702,10 +6702,10 @@ void brcmf_cfg80211_arm_vif_event(struct brcmf_cfg80211_info *cfg, { struct brcmf_cfg80211_vif_event *event = &cfg->vif_event; - mutex_lock(&event->vif_event_lock); + spin_lock(&event->vif_event_lock); event->vif = vif; event->action = 0; - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); } bool brcmf_cfg80211_vif_event_armed(struct brcmf_cfg80211_info *cfg) @@ -6713,9 +6713,9 @@ bool brcmf_cfg80211_vif_event_armed(struct brcmf_cfg80211_info *cfg) struct brcmf_cfg80211_vif_event *event = &cfg->vif_event; bool armed; - mutex_lock(&event->vif_event_lock); + spin_lock(&event->vif_event_lock); armed = event->vif != NULL; - mutex_unlock(&event->vif_event_lock); + spin_unlock(&event->vif_event_lock); return armed; } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h index 7d77f86..8889832 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h @@ -227,7 +227,7 @@ struct escan_info { */ struct brcmf_cfg80211_vif_event { wait_queue_head_t vif_wq; - struct mutex vif_event_lock; + spinlock_t vif_event_lock; u8 action; struct brcmf_cfg80211_vif *vif; }; -- cgit v0.10.2 From 87904c3e82319cf2bad8d656d79c5030dab9490e Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 12 Aug 2016 16:00:53 +0200 Subject: drm/tegra: dsi: Enhance runtime power management The MIPI DSI output on Tegra SoCs requires some external logic to calibrate the MIPI pads before a video signal can be transmitted. This MIPI calibration logic requires to be powered on while the MIPI pads are being used, which is currently done as part of the DSI driver's probe implementation. This is suboptimal because it will leave the MIPI calibration logic powered up even if the DSI output is never used. On Tegra114 and earlier this behaviour also causes the driver to hang while trying to power up the MIPI calibration logic because the power partition that contains the MIPI calibration logic will be powered on by the display controller at output pipeline configuration time. Thus the power up sequence for the MIPI calibration logic happens before it's power partition is guaranteed to be enabled. Fix this by splitting up the API into a request/free pair of functions that manage the runtime dependency between the DSI and the calibration modules (no registers are accessed) and a set of enable, calibrate and disable functions that program the MIPI calibration logic at points in time where the power partition is really enabled. While at it, make sure that the runtime power management also works in ganged mode, which is currently also broken. Reported-by: Jonathan Hunter Tested-by: Jonathan Hunter Signed-off-by: Thierry Reding diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index 3d228ad..3dea121 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -840,6 +840,21 @@ static const struct drm_encoder_funcs tegra_dsi_encoder_funcs = { .destroy = tegra_output_encoder_destroy, }; +static void tegra_dsi_unprepare(struct tegra_dsi *dsi) +{ + int err; + + if (dsi->slave) + tegra_dsi_unprepare(dsi->slave); + + err = tegra_mipi_disable(dsi->mipi); + if (err < 0) + dev_err(dsi->dev, "failed to disable MIPI calibration: %d\n", + err); + + pm_runtime_put(dsi->dev); +} + static void tegra_dsi_encoder_disable(struct drm_encoder *encoder) { struct tegra_output *output = encoder_to_output(encoder); @@ -876,7 +891,26 @@ static void tegra_dsi_encoder_disable(struct drm_encoder *encoder) tegra_dsi_disable(dsi); - pm_runtime_put(dsi->dev); + tegra_dsi_unprepare(dsi); +} + +static void tegra_dsi_prepare(struct tegra_dsi *dsi) +{ + int err; + + pm_runtime_get_sync(dsi->dev); + + err = tegra_mipi_enable(dsi->mipi); + if (err < 0) + dev_err(dsi->dev, "failed to enable MIPI calibration: %d\n", + err); + + err = tegra_dsi_pad_calibrate(dsi); + if (err < 0) + dev_err(dsi->dev, "MIPI calibration failed: %d\n", err); + + if (dsi->slave) + tegra_dsi_prepare(dsi->slave); } static void tegra_dsi_encoder_enable(struct drm_encoder *encoder) @@ -887,13 +921,8 @@ static void tegra_dsi_encoder_enable(struct drm_encoder *encoder) struct tegra_dsi *dsi = to_dsi(output); struct tegra_dsi_state *state; u32 value; - int err; - - pm_runtime_get_sync(dsi->dev); - err = tegra_dsi_pad_calibrate(dsi); - if (err < 0) - dev_err(dsi->dev, "MIPI calibration failed: %d\n", err); + tegra_dsi_prepare(dsi); state = tegra_dsi_get_state(dsi); diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c index 52a6fd2..e00809d 100644 --- a/drivers/gpu/host1x/mipi.c +++ b/drivers/gpu/host1x/mipi.c @@ -242,20 +242,6 @@ struct tegra_mipi_device *tegra_mipi_request(struct device *device) dev->pads = args.args[0]; dev->device = device; - mutex_lock(&dev->mipi->lock); - - if (dev->mipi->usage_count++ == 0) { - err = tegra_mipi_power_up(dev->mipi); - if (err < 0) { - dev_err(dev->mipi->dev, - "failed to power up MIPI bricks: %d\n", - err); - return ERR_PTR(err); - } - } - - mutex_unlock(&dev->mipi->lock); - return dev; put: @@ -270,29 +256,42 @@ EXPORT_SYMBOL(tegra_mipi_request); void tegra_mipi_free(struct tegra_mipi_device *device) { - int err; + platform_device_put(device->pdev); + kfree(device); +} +EXPORT_SYMBOL(tegra_mipi_free); - mutex_lock(&device->mipi->lock); +int tegra_mipi_enable(struct tegra_mipi_device *dev) +{ + int err = 0; - if (--device->mipi->usage_count == 0) { - err = tegra_mipi_power_down(device->mipi); - if (err < 0) { - /* - * Not much that can be done here, so an error message - * will have to do. - */ - dev_err(device->mipi->dev, - "failed to power down MIPI bricks: %d\n", - err); - } - } + mutex_lock(&dev->mipi->lock); - mutex_unlock(&device->mipi->lock); + if (dev->mipi->usage_count++ == 0) + err = tegra_mipi_power_up(dev->mipi); + + mutex_unlock(&dev->mipi->lock); + + return err; - platform_device_put(device->pdev); - kfree(device); } -EXPORT_SYMBOL(tegra_mipi_free); +EXPORT_SYMBOL(tegra_mipi_enable); + +int tegra_mipi_disable(struct tegra_mipi_device *dev) +{ + int err = 0; + + mutex_lock(&dev->mipi->lock); + + if (--dev->mipi->usage_count == 0) + err = tegra_mipi_power_down(dev->mipi); + + mutex_unlock(&dev->mipi->lock); + + return err; + +} +EXPORT_SYMBOL(tegra_mipi_disable); static int tegra_mipi_wait(struct tegra_mipi *mipi) { diff --git a/include/linux/host1x.h b/include/linux/host1x.h index d2ba7d3..1ffbf2a 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -304,6 +304,8 @@ struct tegra_mipi_device; struct tegra_mipi_device *tegra_mipi_request(struct device *device); void tegra_mipi_free(struct tegra_mipi_device *device); +int tegra_mipi_enable(struct tegra_mipi_device *device); +int tegra_mipi_disable(struct tegra_mipi_device *device); int tegra_mipi_calibrate(struct tegra_mipi_device *device); #endif -- cgit v0.10.2 From 9b47f77a680447e0132b2cf7fb82374e014bec1c Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Wed, 24 Aug 2016 03:52:12 -0700 Subject: nvme: Fix nvme_get/set_features() with a NULL result pointer nvme_set_features() callers seem to expect that passing NULL as the result pointer is acceptable. Teach nvme_set_features() not to try to write to the NULL address. For symmetry, make the same change to nvme_get_features(), despite the fact that all current callers pass a valid result pointer. I assume that this bug hasn't been reported in practice because the callers that pass NULL are all in the SCSI translation layer and no one uses the relevant operations. Cc: stable@vger.kernel.org Signed-off-by: Andy Lutomirski Reviewed-by: Sagi Grimberg Signed-off-by: Jens Axboe diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 7f75d66..2feacc7 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -611,7 +611,7 @@ int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid, ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe, NULL, 0, 0, NVME_QID_ANY, 0, 0); - if (ret >= 0) + if (ret >= 0 && result) *result = le32_to_cpu(cqe.result); return ret; } @@ -631,7 +631,7 @@ int nvme_set_features(struct nvme_ctrl *dev, unsigned fid, unsigned dword11, ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe, NULL, 0, 0, NVME_QID_ANY, 0, 0); - if (ret >= 0) + if (ret >= 0 && result) *result = le32_to_cpu(cqe.result); return ret; } -- cgit v0.10.2 From 4d70dca4eadf2f95abe389116ac02b8439c2d16c Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 23 Aug 2016 21:49:45 +0800 Subject: block: make sure a big bio is split into at most 256 bvecs After arbitrary bio size was introduced, the incoming bio may be very big. We have to split the bio into small bios so that each holds at most BIO_MAX_PAGES bvecs for safety reason, such as bio_clone(). This patch fixes the following kernel crash: > [ 172.660142] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 > [ 172.660229] IP: [] bio_trim+0xf/0x2a > [ 172.660289] PGD 7faf3e067 PUD 7f9279067 PMD 0 > [ 172.660399] Oops: 0000 [#1] SMP > [...] > [ 172.664780] Call Trace: > [ 172.664813] [] ? raid1_make_request+0x2e8/0xad7 [raid1] > [ 172.664846] [] ? blk_queue_split+0x377/0x3d4 > [ 172.664880] [] ? md_make_request+0xf6/0x1e9 [md_mod] > [ 172.664912] [] ? generic_make_request+0xb5/0x155 > [ 172.664947] [] ? prio_io+0x85/0x95 [bcache] > [ 172.664981] [] ? register_cache_set+0x355/0x8d0 [bcache] > [ 172.665016] [] ? register_bcache+0x1006/0x1174 [bcache] The issue can be reproduced by the following steps: - create one raid1 over two virtio-blk - build bcache device over the above raid1 and another cache device and bucket size is set as 2Mbytes - set cache mode as writeback - run random write over ext4 on the bcache device Fixes: 54efd50(block: make generic_make_request handle arbitrarily sized bios) Reported-by: Sebastian Roesner Reported-by: Eric Wheeler Cc: stable@vger.kernel.org (4.3+) Cc: Shaohua Li Acked-by: Kent Overstreet Signed-off-by: Ming Lei Signed-off-by: Jens Axboe diff --git a/block/blk-merge.c b/block/blk-merge.c index 72627e3..2642e5f 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -94,9 +94,31 @@ static struct bio *blk_bio_segment_split(struct request_queue *q, bool do_split = true; struct bio *new = NULL; const unsigned max_sectors = get_max_io_size(q, bio); + unsigned bvecs = 0; bio_for_each_segment(bv, bio, iter) { /* + * With arbitrary bio size, the incoming bio may be very + * big. We have to split the bio into small bios so that + * each holds at most BIO_MAX_PAGES bvecs because + * bio_clone() can fail to allocate big bvecs. + * + * It should have been better to apply the limit per + * request queue in which bio_clone() is involved, + * instead of globally. The biggest blocker is the + * bio_clone() in bio bounce. + * + * If bio is splitted by this reason, we should have + * allowed to continue bios merging, but don't do + * that now for making the change simple. + * + * TODO: deal with bio bounce's bio_clone() gracefully + * and convert the global limit into per-queue limit. + */ + if (bvecs++ >= BIO_MAX_PAGES) + goto split; + + /* * If the queue doesn't support SG gaps and adding this * offset would create a gap, disallow it. */ -- cgit v0.10.2 From 5661538749511d4c2f7d33e1e179f10c545b24d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Wed, 17 Aug 2016 13:44:20 +0200 Subject: drm/amdgpu: fix lru size grouping v2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adding a BO can make it the insertion point for larger sizes as well. v2: add a comment about the guard structure. Signed-off-by: Christian König Reviewed-by: Alex Deucher Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 8c704c8..700c56b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -426,6 +426,8 @@ struct amdgpu_mman { /* custom LRU management */ struct amdgpu_mman_lru log2_size[AMDGPU_TTM_LRU_SIZE]; + /* guard for log2_size array, don't add anything in between */ + struct amdgpu_mman_lru guard; }; int amdgpu_copy_buffer(struct amdgpu_ring *ring, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 141bfca..716f2af 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -950,6 +950,8 @@ static struct list_head *amdgpu_ttm_lru_tail(struct ttm_buffer_object *tbo) struct list_head *res = lru->lru[tbo->mem.mem_type]; lru->lru[tbo->mem.mem_type] = &tbo->lru; + while ((++lru)->lru[tbo->mem.mem_type] == res) + lru->lru[tbo->mem.mem_type] = &tbo->lru; return res; } @@ -960,6 +962,8 @@ static struct list_head *amdgpu_ttm_swap_lru_tail(struct ttm_buffer_object *tbo) struct list_head *res = lru->swap_lru; lru->swap_lru = &tbo->swap; + while ((++lru)->swap_lru == res) + lru->swap_lru = &tbo->swap; return res; } @@ -1011,6 +1015,10 @@ int amdgpu_ttm_init(struct amdgpu_device *adev) lru->swap_lru = &adev->mman.bdev.glob->swap_lru; } + for (j = 0; j < TTM_NUM_MEM_TYPES; ++j) + adev->mman.guard.lru[j] = NULL; + adev->mman.guard.swap_lru = NULL; + adev->mman.initialized = true; r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM, adev->mc.real_vram_size >> PAGE_SHIFT); -- cgit v0.10.2 From 9afee94939e3eda4c8bf239f7727cb56e158c976 Mon Sep 17 00:00:00 2001 From: Frederic Dalleau Date: Tue, 23 Aug 2016 07:59:19 +0200 Subject: Bluetooth: Fix memory leak at end of hci requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In hci_req_sync_complete the event skb is referenced in hdev->req_skb. It is used (via hci_req_run_skb) from either __hci_cmd_sync_ev which will pass the skb to the caller, or __hci_req_sync which leaks. unreferenced object 0xffff880005339a00 (size 256): comm "kworker/u3:1", pid 1011, jiffies 4294671976 (age 107.389s) backtrace: [] kmemleak_alloc+0x49/0xa0 [] kmem_cache_alloc+0x128/0x180 [] skb_clone+0x4f/0xa0 [] hci_event_packet+0xc1/0x3290 [] hci_rx_work+0x18b/0x360 [] process_one_work+0x14a/0x440 [] worker_thread+0x43/0x4d0 [] kthread+0xc4/0xe0 [] ret_from_fork+0x1f/0x40 [] 0xffffffffffffffff Signed-off-by: Frédéric Dalleau Signed-off-by: Marcel Holtmann diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index c045b3c..b0e23df 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -262,6 +262,8 @@ int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req, break; } + kfree_skb(hdev->req_skb); + hdev->req_skb = NULL; hdev->req_status = hdev->req_result = 0; BT_DBG("%s end: err %d", hdev->name, err); -- cgit v0.10.2 From dbb50887c8f619fc5c3489783ebc3122bc134a31 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Wed, 27 Jul 2016 11:40:14 -0700 Subject: Bluetooth: split sk_filter in l2cap_sock_recv_cb During an audit for sk_filter(), we found that rx_busy_skb handling in l2cap_sock_recv_cb() and l2cap_sock_recvmsg() looks not quite as intended. The assumption from commit e328140fdacb ("Bluetooth: Use event-driven approach for handling ERTM receive buffer") is that errors returned from sock_queue_rcv_skb() are due to receive buffer shortage. However, nothing should prevent doing a setsockopt() with SO_ATTACH_FILTER on the socket, that could drop some of the incoming skbs when handled in sock_queue_rcv_skb(). In that case sock_queue_rcv_skb() will return with -EPERM, propagated from sk_filter() and if in L2CAP_MODE_ERTM mode, wrong assumption was that we failed due to receive buffer being full. From that point onwards, due to the to-be-dropped skb being held in rx_busy_skb, we cannot make any forward progress as rx_busy_skb is never cleared from l2cap_sock_recvmsg(), due to the filter drop verdict over and over coming from sk_filter(). Meanwhile, in l2cap_sock_recv_cb() all new incoming skbs are being dropped due to rx_busy_skb being occupied. Instead, just use __sock_queue_rcv_skb() where an error really tells that there's a receive buffer issue. Split the sk_filter() and enable it for non-segmented modes at queuing time since at this point in time the skb has already been through the ERTM state machine and it has been acked, so dropping is not allowed. Instead, for ERTM and streaming mode, call sk_filter() in l2cap_data_rcv() so the packet can be dropped before the state machine sees it. Fixes: e328140fdacb ("Bluetooth: Use event-driven approach for handling ERTM receive buffer") Signed-off-by: Daniel Borkmann Signed-off-by: Mat Martineau Acked-by: Willem de Bruijn Signed-off-by: Marcel Holtmann diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 54ceb1f..d4cad29b0 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -32,6 +32,7 @@ #include #include +#include #include #include @@ -5835,6 +5836,9 @@ static int l2cap_reassemble_sdu(struct l2cap_chan *chan, struct sk_buff *skb, if (chan->sdu) break; + if (!pskb_may_pull(skb, L2CAP_SDULEN_SIZE)) + break; + chan->sdu_len = get_unaligned_le16(skb->data); skb_pull(skb, L2CAP_SDULEN_SIZE); @@ -6610,6 +6614,10 @@ static int l2cap_data_rcv(struct l2cap_chan *chan, struct sk_buff *skb) goto drop; } + if ((chan->mode == L2CAP_MODE_ERTM || + chan->mode == L2CAP_MODE_STREAMING) && sk_filter(chan->data, skb)) + goto drop; + if (!control->sframe) { int err; diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 1842141..a8ba752 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1019,7 +1019,7 @@ static int l2cap_sock_recvmsg(struct socket *sock, struct msghdr *msg, goto done; if (pi->rx_busy_skb) { - if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) + if (!__sock_queue_rcv_skb(sk, pi->rx_busy_skb)) pi->rx_busy_skb = NULL; else goto done; @@ -1270,7 +1270,17 @@ static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) goto done; } - err = sock_queue_rcv_skb(sk, skb); + if (chan->mode != L2CAP_MODE_ERTM && + chan->mode != L2CAP_MODE_STREAMING) { + /* Even if no filter is attached, we could potentially + * get errors from security modules, etc. + */ + err = sk_filter(sk, skb); + if (err) + goto done; + } + + err = __sock_queue_rcv_skb(sk, skb); /* For ERTM, handle one skb that doesn't fit into the recv * buffer. This is important to do because the data frames -- cgit v0.10.2 From 5dfd5e5e3bc68ab3912acc712c8180942094fc69 Mon Sep 17 00:00:00 2001 From: Shiraz Saleem Date: Mon, 22 Aug 2016 18:16:37 -0500 Subject: i40iw: Add missing NULL check for MPA private data Add NULL check for pdata and pdata->addr before the memcpy in i40iw_form_cm_frame(). This fixes a NULL pointer de-reference which occurs when the MPA private data pointer is NULL. Also only copy pdata->size bytes in the memcpy to prevent reading past the length of the private data buffer provided by upper layer. Fixes: f27b4746f378 ("i40iw: add connection management code") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c index 5026dc7..6434398 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_cm.c +++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c @@ -535,8 +535,8 @@ static struct i40iw_puda_buf *i40iw_form_cm_frame(struct i40iw_cm_node *cm_node, buf += hdr_len; } - if (pd_len) - memcpy(buf, pdata->addr, pd_len); + if (pdata && pdata->addr) + memcpy(buf, pdata->addr, pdata->size); atomic_set(&sqbuf->refcount, 1); -- cgit v0.10.2 From 7eaf8313b1cfe93417a22bdc3f7380cac2a3dc6d Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Mon, 22 Aug 2016 19:01:47 -0500 Subject: i40iw: Do not set self-referencing pointer to NULL after kfree In i40iw_free_virt_mem(), do not set mem->va to NULL after freeing it as mem->va is a self-referencing pointer to mem. Fixes: 4e9042e647ff ("i40iw: add hw and utils files") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_utils.c b/drivers/infiniband/hw/i40iw/i40iw_utils.c index 0e8db0a..6fd043b 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_utils.c +++ b/drivers/infiniband/hw/i40iw/i40iw_utils.c @@ -673,8 +673,11 @@ enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw, { if (!mem) return I40IW_ERR_PARAM; + /* + * mem->va points to the parent of mem, so both mem and mem->va + * can not be touched once mem->va is freed + */ kfree(mem->va); - mem->va = NULL; return 0; } -- cgit v0.10.2 From 82d200cc6fc817dbf049b67e5e3215eab427e846 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 23 Aug 2016 21:16:26 +0100 Subject: IB/mlx5: Remove superfluous include of io-mapping.h This file does not use any structs or functions defined by io-mapping.h (nor does it directly use iomap, ioremap, iounamp or friends). Remove it to simplify verification of changes to io-mapping.h The include existed since its inception in commit e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c Author: Eli Cohen Date: Sun Jul 7 17:25:49 2013 +0300 mlx5: Add driver for Mellanox Connect-IB adapters which looks like a copy across from the Mellanox ethernet driver. Signed-off-by: Chris Wilson Cc: Eli Cohen Cc: Jack Morgenstein Cc: Or Gerlitz Cc: Matan Barak Cc: Leon Romanovsky Cc: Doug Ledford Cc: Sean Hefty Cc: Hal Rosenstock Cc: linux-rdma@vger.kernel.org Reviewed-by: Leon Romanovsky Reviewed-by: Laurence Oberman Tested-by: Laurence Oberman Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index a84bb76..1b4094b 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -37,7 +37,6 @@ #include #include #include -#include #if defined(CONFIG_X86) #include #endif -- cgit v0.10.2 From d41d0910d97f05be987d2d60de7e8685c108963b Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Tue, 23 Aug 2016 16:50:13 -0500 Subject: i40iw: Fix double free of allocated_buffer Memory allocated for iwqp; iwqp->allocated_buffer is freed twice in the create_qp error path. Correct this by having it freed only once in i40iw_free_qp_resources(). Fixes: d37498417947 ("i40iw: add files for iwarp interface") Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 2360338..722e5af 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -794,7 +794,6 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd, return &iwqp->ibqp; error: i40iw_free_qp_resources(iwdev, iwqp, qp_num); - kfree(mem); return ERR_PTR(err_code); } -- cgit v0.10.2 From 433c58139f6a7d59824aadd23d6c9cac1d4e6100 Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Tue, 23 Aug 2016 17:24:56 -0500 Subject: i40iw: Avoid writing to freed memory iwpbl->iwmr points to the structure that contains iwpbl, which is iwmr. Setting this to NULL would result in writing to freed memory. So just free iwmr, and return. Fixes: d37498417947 ("i40iw: add files for iwarp interface") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 722e5af..6329c97 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -1925,8 +1925,7 @@ static int i40iw_dereg_mr(struct ib_mr *ib_mr) } if (iwpbl->pbl_allocated) i40iw_free_pble(iwdev->pble_rsrc, palloc); - kfree(iwpbl->iwmr); - iwpbl->iwmr = NULL; + kfree(iwmr); return 0; } -- cgit v0.10.2 From 3c199b4523c92dc5df027eeeffa657e2ccf453ab Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Wed, 24 Aug 2016 01:17:41 -0400 Subject: RDMA/ocrdma: Fix the max_sge reported from FW Current driver is reporting wrong values for max_sge and max_sge_rd in query_device. This breaks the nfs rdma and iser in some device profiles. Fixing the driver to report correct values from FW. Signed-off-by: Selvin Xavier Signed-off-by: Devesh Sharma Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c index 16740dc..67fc0b6 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c @@ -1156,18 +1156,18 @@ static void ocrdma_get_attr(struct ocrdma_dev *dev, attr->max_srq = (rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >> OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET; - attr->max_send_sge = ((rsp->max_write_send_sge & + attr->max_send_sge = ((rsp->max_recv_send_sge & OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >> OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT); - attr->max_recv_sge = (rsp->max_write_send_sge & - OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >> - OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT; + attr->max_recv_sge = (rsp->max_recv_send_sge & + OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_MASK) >> + OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT; attr->max_srq_sge = (rsp->max_srq_rqe_sge & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >> OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET; - attr->max_rdma_sge = (rsp->max_write_send_sge & - OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_MASK) >> - OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT; + attr->max_rdma_sge = (rsp->max_wr_rd_sge & + OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_MASK) >> + OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_SHIFT; attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp & OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >> OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT; diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h index 0efc966..37df448 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h @@ -554,9 +554,9 @@ enum { OCRDMA_MBX_QUERY_CFG_L3_TYPE_MASK = 0x18, OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT = 0, OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK = 0xFFFF, - OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT = 16, - OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_MASK = 0xFFFF << - OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT, + OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT = 16, + OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_MASK = 0xFFFF << + OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT, OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT = 0, OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK = 0xFFFF, @@ -612,6 +612,8 @@ enum { OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET = 0, OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK = 0xFFFF << OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET, + OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_SHIFT = 0, + OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_MASK = 0xFFFF, }; struct ocrdma_mbx_query_config { @@ -619,7 +621,7 @@ struct ocrdma_mbx_query_config { struct ocrdma_mbx_rsp rsp; u32 qp_srq_cq_ird_ord; u32 max_pd_ca_ack_delay; - u32 max_write_send_sge; + u32 max_recv_send_sge; u32 max_ird_ord_per_qp; u32 max_shared_ird_ord; u32 max_mr; @@ -639,6 +641,8 @@ struct ocrdma_mbx_query_config { u32 max_wqes_rqes_per_q; u32 max_cq_cqes_per_cq; u32 max_srq_rqe_sge; + u32 max_wr_rd_sge; + u32 ird_pgsz_num_pages; }; struct ocrdma_fw_ver_rsp { diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index b1a3d91..0aa8547 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -125,8 +125,8 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_MGT_EXTENSIONS; - attr->max_sge = dev->attr.max_send_sge; - attr->max_sge_rd = attr->max_sge; + attr->max_sge = min(dev->attr.max_send_sge, dev->attr.max_recv_sge); + attr->max_sge_rd = dev->attr.max_rdma_sge; attr->max_cq = dev->attr.max_cq; attr->max_cqe = dev->attr.max_cqe; attr->max_mr = dev->attr.max_mr; -- cgit v0.10.2 From 8fba54aebbdf1f999738121922e74bf796ad60ee Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Wed, 24 Aug 2016 18:17:04 +0200 Subject: fuse: direct-io: don't dirty ITER_BVEC pages When reading from a loop device backed by a fuse file it deadlocks on lock_page(). This is because the page is already locked by the read() operation done on the loop device. In this case we don't want to either lock the page or dirty it. So do what fs/direct-io.c does: only dirty the page for ITER_IOVEC vectors. Reported-by: Sheng Yang Fixes: aa4d86163e4e ("block: loop: switch to VFS ITER_BVEC") Signed-off-by: Miklos Szeredi Cc: # v4.1+ Reviewed-by: Sheng Yang Reviewed-by: Ashish Samant Tested-by: Sheng Yang Tested-by: Ashish Samant diff --git a/fs/fuse/file.c b/fs/fuse/file.c index f394aff..3988b43 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -530,13 +530,13 @@ void fuse_read_fill(struct fuse_req *req, struct file *file, loff_t pos, req->out.args[0].size = count; } -static void fuse_release_user_pages(struct fuse_req *req, int write) +static void fuse_release_user_pages(struct fuse_req *req, bool should_dirty) { unsigned i; for (i = 0; i < req->num_pages; i++) { struct page *page = req->pages[i]; - if (write) + if (should_dirty) set_page_dirty_lock(page); put_page(page); } @@ -1320,6 +1320,7 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter, loff_t *ppos, int flags) { int write = flags & FUSE_DIO_WRITE; + bool should_dirty = !write && iter_is_iovec(iter); int cuse = flags & FUSE_DIO_CUSE; struct file *file = io->file; struct inode *inode = file->f_mapping->host; @@ -1363,7 +1364,7 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter, nres = fuse_send_read(req, io, pos, nbytes, owner); if (!io->async) - fuse_release_user_pages(req, !write); + fuse_release_user_pages(req, should_dirty); if (req->out.h.error) { err = req->out.h.error; break; -- cgit v0.10.2 From f888f58795b640442165e60a6fa93e8e623d01a5 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 24 Aug 2016 11:18:51 +0200 Subject: mlxsw: spectrum: Add missing flood to router port In case we have a layer 3 interface on top of a bridge (VLAN / FID RIF), then we should flood the following packet types to the router: * Broadcast: If DIP is the broadcast address of the interface, then we need to be able to get it to CPU by trapping it following route lookup. * Reserved IP multicast (224.0.0.X): Some control packets (e.g. OSPF) use this range and are trapped in the router block. Fixes: 99f44bb3527b ("mlxsw: spectrum: Enable L3 interfaces on top of bridge devices") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/port.h b/drivers/net/ethernet/mellanox/mlxsw/port.h index f33b997..af371a8 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/port.h +++ b/drivers/net/ethernet/mellanox/mlxsw/port.h @@ -56,6 +56,7 @@ #define MLXSW_PORT_PHY_BITS_MASK (MLXSW_PORT_MAX_PHY_PORTS - 1) #define MLXSW_PORT_CPU_PORT 0x0 +#define MLXSW_PORT_ROUTER_PORT (MLXSW_PORT_MAX_PHY_PORTS + 2) #define MLXSW_PORT_DONT_CARE (MLXSW_PORT_MAX_PORTS) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 1f81689..7291f2c 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3324,6 +3324,39 @@ static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, return mlxsw_sp_fid_find(mlxsw_sp, fid); } +static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) +{ + return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : + MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; +} + +static u16 mlxsw_sp_flood_table_index_get(u16 fid) +{ + return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; +} + +static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, + bool set) +{ + enum mlxsw_flood_table_type table_type; + char *sftr_pl; + u16 index; + int err; + + sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); + if (!sftr_pl) + return -ENOMEM; + + table_type = mlxsw_sp_flood_table_type_get(fid); + index = mlxsw_sp_flood_table_index_get(fid); + mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, index, table_type, + 1, MLXSW_PORT_ROUTER_PORT, set); + err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); + + kfree(sftr_pl); + return err; +} + static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) { if (mlxsw_sp_fid_is_vfid(fid)) @@ -3360,10 +3393,14 @@ static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, if (rif == MLXSW_SP_RIF_MAX) return -ERANGE; - err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true); + err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); if (err) return err; + err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true); + if (err) + goto err_rif_bridge_op; + err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); if (err) goto err_rif_fdb_op; @@ -3385,6 +3422,8 @@ err_rif_alloc: mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); err_rif_fdb_op: mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false); +err_rif_bridge_op: + mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); return err; } @@ -3404,6 +3443,8 @@ void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false); + mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); + netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif); } -- cgit v0.10.2 From 51af96b53469f3b8cfcfe0504d0ff87239175b78 Mon Sep 17 00:00:00 2001 From: Yotam Gigi Date: Wed, 24 Aug 2016 11:18:52 +0200 Subject: mlxsw: router: Enable neighbors to be created on stacked devices Make the function mlxsw_router_neigh_construct search the rif according to the neighbour dev other than the dev that was passed to the ndo, thus allowing creating neigbhours upon stacked devices. Fixes: 6cf3c971dc84 ("mlxsw: spectrum_router: Add private neigh table") Signed-off-by: Yotam Gigi Reviewed-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 90bb93b..917ddd1 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -657,7 +657,7 @@ int mlxsw_sp_router_neigh_construct(struct net_device *dev, return 0; } - r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); + r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); if (WARN_ON(!r)) return -EINVAL; -- cgit v0.10.2 From 9a035a40f7f3f6708b79224b86c5777a3334f7ea Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 15 Aug 2016 09:02:38 -0600 Subject: xenbus: don't look up transaction IDs for ordinary writes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This should really only be done for XS_TRANSACTION_END messages, or else at least some of the xenstore-* tools don't work anymore. Fixes: 0beef634b8 ("xenbus: don't BUG() on user mode induced condition") Reported-by: Richard Schütz Cc: Signed-off-by: Jan Beulich Tested-by: Richard Schütz Signed-off-by: David Vrabel diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c index 7487971..c1010f01 100644 --- a/drivers/xen/xenbus/xenbus_dev_frontend.c +++ b/drivers/xen/xenbus/xenbus_dev_frontend.c @@ -316,7 +316,7 @@ static int xenbus_write_transaction(unsigned msg_type, rc = -ENOMEM; goto out; } - } else { + } else if (msg_type == XS_TRANSACTION_END) { list_for_each_entry(trans, &u->transactions, list) if (trans->handle.id == u->u.msg.tx_id) break; -- cgit v0.10.2 From 55467dea2967259f21f4f854fc99d39cc5fea60e Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 29 Jul 2016 11:06:48 +0200 Subject: xen: change the type of xen_vcpu_id to uint32_t We pass xen_vcpu_id mapping information to hypercalls which require uint32_t type so it would be cleaner to have it as uint32_t. The initializer to -1 can be dropped as we always do the mapping before using it and we never check the 'not set' value anyway. Signed-off-by: Vitaly Kuznetsov Signed-off-by: David Vrabel diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index b0b82f5..3d2cef6 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -50,7 +50,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu); static struct vcpu_info __percpu *xen_vcpu_info; /* Linux <-> Xen vCPU id mapping */ -DEFINE_PER_CPU(int, xen_vcpu_id) = -1; +DEFINE_PER_CPU(uint32_t, xen_vcpu_id); EXPORT_PER_CPU_SYMBOL(xen_vcpu_id); /* These are unused until we support booting "pre-ballooned" */ diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 8ffb089..b86ebb1 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -118,7 +118,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu); DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info); /* Linux <-> Xen vCPU id mapping */ -DEFINE_PER_CPU(int, xen_vcpu_id) = -1; +DEFINE_PER_CPU(uint32_t, xen_vcpu_id); EXPORT_PER_CPU_SYMBOL(xen_vcpu_id); enum xen_domain_type xen_domain_type = XEN_NATIVE; diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h index 9a37c541..b5486e6 100644 --- a/include/xen/xen-ops.h +++ b/include/xen/xen-ops.h @@ -9,8 +9,8 @@ DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); -DECLARE_PER_CPU(int, xen_vcpu_id); -static inline int xen_vcpu_nr(int cpu) +DECLARE_PER_CPU(uint32_t, xen_vcpu_id); +static inline uint32_t xen_vcpu_nr(int cpu) { return per_cpu(xen_vcpu_id, cpu); } -- cgit v0.10.2 From 486b0f7bcd64be027535811ef44195bc1027fbd3 Mon Sep 17 00:00:00 2001 From: Song Liu Date: Fri, 19 Aug 2016 15:34:01 -0700 Subject: r5cache: set MD_JOURNAL_CLEAN correctly Currently, the code sets MD_JOURNAL_CLEAN when the array has MD_FEATURE_JOURNAL and the recovery_cp is MaxSector. The array will be MD_JOURNAL_CLEAN even if the journal device is missing. With this patch, the MD_JOURNAL_CLEAN is only set when the journal device presents. Signed-off-by: Song Liu Signed-off-by: Shaohua Li diff --git a/drivers/md/md.c b/drivers/md/md.c index cc25cbc..4f6cf3b 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1604,11 +1604,8 @@ static int super_1_validate(struct mddev *mddev, struct md_rdev *rdev) mddev->new_chunk_sectors = mddev->chunk_sectors; } - if (le32_to_cpu(sb->feature_map) & MD_FEATURE_JOURNAL) { + if (le32_to_cpu(sb->feature_map) & MD_FEATURE_JOURNAL) set_bit(MD_HAS_JOURNAL, &mddev->flags); - if (mddev->recovery_cp == MaxSector) - set_bit(MD_JOURNAL_CLEAN, &mddev->flags); - } } else if (mddev->pers == NULL) { /* Insist of good event counter while assembling, except for * spares (which don't need an event count) */ diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 4f8f524..2119e09 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6840,11 +6840,14 @@ static int raid5_run(struct mddev *mddev) if (IS_ERR(conf)) return PTR_ERR(conf); - if (test_bit(MD_HAS_JOURNAL, &mddev->flags) && !journal_dev) { - printk(KERN_ERR "md/raid:%s: journal disk is missing, force array readonly\n", - mdname(mddev)); - mddev->ro = 1; - set_disk_ro(mddev->gendisk, 1); + if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) { + if (!journal_dev) { + pr_err("md/raid:%s: journal disk is missing, force array readonly\n", + mdname(mddev)); + mddev->ro = 1; + set_disk_ro(mddev->gendisk, 1); + } else if (mddev->recovery_cp == MaxSector) + set_bit(MD_JOURNAL_CLEAN, &mddev->flags); } conf->min_offset_diff = min_offset_diff; -- cgit v0.10.2 From 0f6187dbe542d71ace8ba0908954b0f4f8a30a1e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 21 Aug 2016 14:42:25 +0000 Subject: md-cluster: fix error return code in join() Fix to return error code -ENOMEM from the lockres_init() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Shaohua Li diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 41573f1..34a840d 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -834,8 +834,10 @@ static int join(struct mddev *mddev, int nodes) goto err; } cinfo->ack_lockres = lockres_init(mddev, "ack", ack_bast, 0); - if (!cinfo->ack_lockres) + if (!cinfo->ack_lockres) { + ret = -ENOMEM; goto err; + } /* get sync CR lock on ACK. */ if (dlm_lock_sync(cinfo->ack_lockres, DLM_LOCK_CR)) pr_err("md-cluster: failed to get a sync CR lock on ACK!(%d)\n", @@ -849,8 +851,10 @@ static int join(struct mddev *mddev, int nodes) pr_info("md-cluster: Joined cluster %s slot %d\n", str, cinfo->slot_number); snprintf(str, 64, "bitmap%04d", cinfo->slot_number - 1); cinfo->bitmap_lockres = lockres_init(mddev, str, NULL, 1); - if (!cinfo->bitmap_lockres) + if (!cinfo->bitmap_lockres) { + ret = -ENOMEM; goto err; + } if (dlm_lock_sync(cinfo->bitmap_lockres, DLM_LOCK_PW)) { pr_err("Failed to get bitmap lock\n"); ret = -EINVAL; @@ -858,8 +862,10 @@ static int join(struct mddev *mddev, int nodes) } cinfo->resync_lockres = lockres_init(mddev, "resync", NULL, 0); - if (!cinfo->resync_lockres) + if (!cinfo->resync_lockres) { + ret = -ENOMEM; goto err; + } return 0; err: -- cgit v0.10.2 From 27028626b4b9022dcac23688e09ea43b36e1183c Mon Sep 17 00:00:00 2001 From: Tomasz Majchrzak Date: Tue, 23 Aug 2016 10:53:57 +0200 Subject: raid10: record correct address of bad block For failed write request record block address on a device, not block address in an array. Signed-off-by: Tomasz Majchrzak Signed-off-by: Shaohua Li diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 1a632a8..4589866 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2465,20 +2465,21 @@ static int narrow_write_error(struct r10bio *r10_bio, int i) while (sect_to_write) { struct bio *wbio; + sector_t wsector; if (sectors > sect_to_write) sectors = sect_to_write; /* Write at 'sector' for 'sectors' */ wbio = bio_clone_mddev(bio, GFP_NOIO, mddev); bio_trim(wbio, sector - bio->bi_iter.bi_sector, sectors); - wbio->bi_iter.bi_sector = (r10_bio->devs[i].addr+ - choose_data_offset(r10_bio, rdev) + - (sector - r10_bio->sector)); + wsector = r10_bio->devs[i].addr + (sector - r10_bio->sector); + wbio->bi_iter.bi_sector = wsector + + choose_data_offset(r10_bio, rdev); wbio->bi_bdev = rdev->bdev; bio_set_op_attrs(wbio, REQ_OP_WRITE, 0); if (submit_bio_wait(wbio) < 0) /* Failure! */ - ok = rdev_set_badblocks(rdev, sector, + ok = rdev_set_badblocks(rdev, wsector, sectors, 0) && ok; -- cgit v0.10.2 From 5f9d1fde7d54a5d5fd8cccbee9c9c31474fcdcf2 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 22 Aug 2016 21:14:01 -0700 Subject: raid5: fix memory leak of bio integrity data Yi reported a memory leak of raid5 with DIF/DIX enabled disks. raid5 doesn't alloc/free bio, instead it reuses bios. There are two issues in current code: 1. the code calls bio_init (from init_stripe->raid5_build_block->bio_init) then bio_reset (ops_run_io). The bio is reused, so likely there is integrity data attached. bio_init will clear a pointer to integrity data and makes bio_reset can't release the data 2. bio_reset is called before dispatching bio. After bio is finished, it's possible we don't free bio's integrity data (eg, we don't call bio_reset again) Both issues will cause memory leak. The patch moves bio_init to stripe creation and bio_reset to bio end io. This will fix the two issues. Reported-by: Yi Zhang Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 2119e09..d1a279b 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1005,7 +1005,6 @@ again: set_bit(STRIPE_IO_STARTED, &sh->state); - bio_reset(bi); bi->bi_bdev = rdev->bdev; bio_set_op_attrs(bi, op, op_flags); bi->bi_end_io = op_is_write(op) @@ -1057,7 +1056,6 @@ again: set_bit(STRIPE_IO_STARTED, &sh->state); - bio_reset(rbi); rbi->bi_bdev = rrdev->bdev; bio_set_op_attrs(rbi, op, op_flags); BUG_ON(!op_is_write(op)); @@ -1990,9 +1988,11 @@ static void raid_run_ops(struct stripe_head *sh, unsigned long ops_request) put_cpu(); } -static struct stripe_head *alloc_stripe(struct kmem_cache *sc, gfp_t gfp) +static struct stripe_head *alloc_stripe(struct kmem_cache *sc, gfp_t gfp, + int disks) { struct stripe_head *sh; + int i; sh = kmem_cache_zalloc(sc, gfp); if (sh) { @@ -2001,6 +2001,12 @@ static struct stripe_head *alloc_stripe(struct kmem_cache *sc, gfp_t gfp) INIT_LIST_HEAD(&sh->batch_list); INIT_LIST_HEAD(&sh->lru); atomic_set(&sh->count, 1); + for (i = 0; i < disks; i++) { + struct r5dev *dev = &sh->dev[i]; + + bio_init(&dev->req); + bio_init(&dev->rreq); + } } return sh; } @@ -2008,7 +2014,7 @@ static int grow_one_stripe(struct r5conf *conf, gfp_t gfp) { struct stripe_head *sh; - sh = alloc_stripe(conf->slab_cache, gfp); + sh = alloc_stripe(conf->slab_cache, gfp, conf->pool_size); if (!sh) return 0; @@ -2179,7 +2185,7 @@ static int resize_stripes(struct r5conf *conf, int newsize) mutex_lock(&conf->cache_size_mutex); for (i = conf->max_nr_stripes; i; i--) { - nsh = alloc_stripe(sc, GFP_KERNEL); + nsh = alloc_stripe(sc, GFP_KERNEL, newsize); if (!nsh) break; @@ -2311,6 +2317,7 @@ static void raid5_end_read_request(struct bio * bi) (unsigned long long)sh->sector, i, atomic_read(&sh->count), bi->bi_error); if (i == disks) { + bio_reset(bi); BUG(); return; } @@ -2414,6 +2421,7 @@ static void raid5_end_read_request(struct bio * bi) clear_bit(R5_LOCKED, &sh->dev[i].flags); set_bit(STRIPE_HANDLE, &sh->state); raid5_release_stripe(sh); + bio_reset(bi); } static void raid5_end_write_request(struct bio *bi) @@ -2448,6 +2456,7 @@ static void raid5_end_write_request(struct bio *bi) (unsigned long long)sh->sector, i, atomic_read(&sh->count), bi->bi_error); if (i == disks) { + bio_reset(bi); BUG(); return; } @@ -2491,18 +2500,17 @@ static void raid5_end_write_request(struct bio *bi) if (sh->batch_head && sh != sh->batch_head) raid5_release_stripe(sh->batch_head); + bio_reset(bi); } static void raid5_build_block(struct stripe_head *sh, int i, int previous) { struct r5dev *dev = &sh->dev[i]; - bio_init(&dev->req); dev->req.bi_io_vec = &dev->vec; dev->req.bi_max_vecs = 1; dev->req.bi_private = sh; - bio_init(&dev->rreq); dev->rreq.bi_io_vec = &dev->rvec; dev->rreq.bi_max_vecs = 1; dev->rreq.bi_private = sh; -- cgit v0.10.2 From 45c91d808ff989d950e260dab9f89e8f4a3c9c2c Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 22 Aug 2016 21:14:02 -0700 Subject: raid5: avoid unnecessary bio data set bio_reset doesn't change bi_io_vec and bi_max_vecs, so we don't need to set them every time. bi_private will be set before the bio is dispatched. Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index d1a279b..62febe8 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2005,7 +2005,12 @@ static struct stripe_head *alloc_stripe(struct kmem_cache *sc, gfp_t gfp, struct r5dev *dev = &sh->dev[i]; bio_init(&dev->req); + dev->req.bi_io_vec = &dev->vec; + dev->req.bi_max_vecs = 1; + bio_init(&dev->rreq); + dev->rreq.bi_io_vec = &dev->rvec; + dev->rreq.bi_max_vecs = 1; } } return sh; @@ -2507,14 +2512,6 @@ static void raid5_build_block(struct stripe_head *sh, int i, int previous) { struct r5dev *dev = &sh->dev[i]; - dev->req.bi_io_vec = &dev->vec; - dev->req.bi_max_vecs = 1; - dev->req.bi_private = sh; - - dev->rreq.bi_io_vec = &dev->rvec; - dev->rreq.bi_max_vecs = 1; - dev->rreq.bi_private = sh; - dev->flags = 0; dev->sector = raid5_compute_blocknr(sh, i, previous); } -- cgit v0.10.2 From af7c388a9c2e5fdd36da6eaaa35fb86fb8aefd0b Mon Sep 17 00:00:00 2001 From: Vince Hsu Date: Wed, 24 Aug 2016 15:56:56 +0200 Subject: clk: tegra: remove TEGRA_PLL_USE_LOCK for PLLD/PLLD2 Tegra114 has a HW bug that the PLLD/PLLD2 lock bit cannot be asserted when the DIS power domain is during up-powergating process but the clamp to this domain is not removed yet. That causes a timeout and aborts the power sequence, although the PLLD/PLLD2 has already locked. To remove the false alarm, we don't use the lock for PLLD/PLLD2. Just wait 1ms and treat the clocks as locked. Signed-off-by: Vince Hsu Tested-by: Jonathan Hunter Signed-off-by: Thierry Reding Signed-off-by: Stephen Boyd diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c index 64da7b7..933b5dd 100644 --- a/drivers/clk/tegra/clk-tegra114.c +++ b/drivers/clk/tegra/clk-tegra114.c @@ -428,7 +428,7 @@ static struct tegra_clk_pll_params pll_d_params = { .div_nmp = &pllp_nmp, .freq_table = pll_d_freq_table, .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_SET_LFCON | - TEGRA_PLL_USE_LOCK | TEGRA_PLL_HAS_LOCK_ENABLE, + TEGRA_PLL_HAS_LOCK_ENABLE, }; static struct tegra_clk_pll_params pll_d2_params = { @@ -446,7 +446,7 @@ static struct tegra_clk_pll_params pll_d2_params = { .div_nmp = &pllp_nmp, .freq_table = pll_d_freq_table, .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_SET_LFCON | - TEGRA_PLL_USE_LOCK | TEGRA_PLL_HAS_LOCK_ENABLE, + TEGRA_PLL_HAS_LOCK_ENABLE, }; static const struct pdiv_map pllu_p[] = { -- cgit v0.10.2 From e1718d97aa88ea44a6a8f50ff464253dd0dacf01 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 24 Aug 2016 12:31:36 -0400 Subject: drm/amdgpu: avoid a possible array overflow MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When looking up the connector type make sure the index is valid. Avoids a later crash if we read past the end of the array. Workaround for bug: https://bugs.freedesktop.org/show_bug.cgi?id=97460 Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c index 9831753..1514223 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c @@ -321,6 +321,12 @@ bool amdgpu_atombios_get_connector_info_from_object_table(struct amdgpu_device * (le16_to_cpu(path->usConnObjectId) & OBJECT_TYPE_MASK) >> OBJECT_TYPE_SHIFT; + if (con_obj_id >= ARRAY_SIZE(object_connector_convert)) { + DRM_ERROR("invalid con_obj_id %d for device tag 0x%04x\n", + con_obj_id, le16_to_cpu(path->usDeviceTag)); + continue; + } + connector_type = object_connector_convert[con_obj_id]; connector_object_id = con_obj_id; -- cgit v0.10.2 From 611a1507fe8569ce1adab3abc982ea58ab559fb9 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 24 Aug 2016 13:04:15 -0400 Subject: drm/amdgpu: skip TV/CV in display parsing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit No asics supported by amdgpu support analog TV. Workaround for bug: https://bugs.freedesktop.org/show_bug.cgi?id=97460 Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c index 1514223..fe872b8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c @@ -321,6 +321,13 @@ bool amdgpu_atombios_get_connector_info_from_object_table(struct amdgpu_device * (le16_to_cpu(path->usConnObjectId) & OBJECT_TYPE_MASK) >> OBJECT_TYPE_SHIFT; + /* Skip TV/CV support */ + if ((le16_to_cpu(path->usDeviceTag) == + ATOM_DEVICE_TV1_SUPPORT) || + (le16_to_cpu(path->usDeviceTag) == + ATOM_DEVICE_CV_SUPPORT)) + continue; + if (con_obj_id >= ARRAY_SIZE(object_connector_convert)) { DRM_ERROR("invalid con_obj_id %d for device tag 0x%04x\n", con_obj_id, le16_to_cpu(path->usDeviceTag)); -- cgit v0.10.2 From 716b076ba4b273f5f85c97448c5110c6d21e73e6 Mon Sep 17 00:00:00 2001 From: Doug Ledford Date: Wed, 24 Aug 2016 12:14:19 -0400 Subject: IB/srpt: Update sport->port_guid with each port refresh If port_guid is set with the default subnet_prefix, then we get a change event and run a port refresh, we don't update the port_guid. As a result, attempts to create a target device that uses the new subnet_prefix in the wwn will fail to find a match and be rejected by the ib_srpt driver. This makes it impossible to configure a port if it was initialized with a default subnet_prefix and later changed to any non-default subnet-prefix. Updating the port refresh task to always update the wwn based upon the current subnext_prefix solves this problem. Cc: Bart Van Assche Cc: nab@linux-iscsi.org Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index dfa23b0..883bbfe 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -522,6 +522,11 @@ static int srpt_refresh_port(struct srpt_port *sport) if (ret) goto err_query_port; + snprintf(sport->port_guid, sizeof(sport->port_guid), + "0x%016llx%016llx", + be64_to_cpu(sport->gid.global.subnet_prefix), + be64_to_cpu(sport->gid.global.interface_id)); + if (!sport->mad_agent) { memset(®_req, 0, sizeof(reg_req)); reg_req.mgmt_class = IB_MGMT_CLASS_DEVICE_MGMT; @@ -2548,10 +2553,6 @@ static void srpt_add_one(struct ib_device *device) sdev->device->name, i); goto err_ring; } - snprintf(sport->port_guid, sizeof(sport->port_guid), - "0x%016llx%016llx", - be64_to_cpu(sport->gid.global.subnet_prefix), - be64_to_cpu(sport->gid.global.interface_id)); } spin_lock(&srpt_dev_lock); -- cgit v0.10.2 From e57690fe009b2ab0cee8a57f53be634540e49c9d Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 24 Aug 2016 15:34:35 -0600 Subject: blk-mq: don't overwrite rq->mq_ctx We do this in a few places, if the CPU is offline. This isn't allowed, though, since on multi queue hardware, we can't just move a request from one software queue to another, if they map to different hardware queues. The request and tag isn't valid on another hardware queue. This can happen if plugging races with CPU offlining. But it does no harm, since it can only happen in the window where we are currently busy freezing the queue and flushing IO, in preparation for redoing the software <-> hardware queue mappings. Signed-off-by: Jens Axboe diff --git a/block/blk-mq.c b/block/blk-mq.c index e931a0e..729169d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1036,10 +1036,11 @@ void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs) EXPORT_SYMBOL(blk_mq_delay_queue); static inline void __blk_mq_insert_req_list(struct blk_mq_hw_ctx *hctx, - struct blk_mq_ctx *ctx, struct request *rq, bool at_head) { + struct blk_mq_ctx *ctx = rq->mq_ctx; + trace_block_rq_insert(hctx->queue, rq); if (at_head) @@ -1053,20 +1054,16 @@ static void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, { struct blk_mq_ctx *ctx = rq->mq_ctx; - __blk_mq_insert_req_list(hctx, ctx, rq, at_head); + __blk_mq_insert_req_list(hctx, rq, at_head); blk_mq_hctx_mark_pending(hctx, ctx); } void blk_mq_insert_request(struct request *rq, bool at_head, bool run_queue, - bool async) + bool async) { + struct blk_mq_ctx *ctx = rq->mq_ctx; struct request_queue *q = rq->q; struct blk_mq_hw_ctx *hctx; - struct blk_mq_ctx *ctx = rq->mq_ctx, *current_ctx; - - current_ctx = blk_mq_get_ctx(q); - if (!cpu_online(ctx->cpu)) - rq->mq_ctx = ctx = current_ctx; hctx = q->mq_ops->map_queue(q, ctx->cpu); @@ -1076,8 +1073,6 @@ void blk_mq_insert_request(struct request *rq, bool at_head, bool run_queue, if (run_queue) blk_mq_run_hw_queue(hctx, async); - - blk_mq_put_ctx(current_ctx); } static void blk_mq_insert_requests(struct request_queue *q, @@ -1088,14 +1083,9 @@ static void blk_mq_insert_requests(struct request_queue *q, { struct blk_mq_hw_ctx *hctx; - struct blk_mq_ctx *current_ctx; trace_block_unplug(q, depth, !from_schedule); - current_ctx = blk_mq_get_ctx(q); - - if (!cpu_online(ctx->cpu)) - ctx = current_ctx; hctx = q->mq_ops->map_queue(q, ctx->cpu); /* @@ -1107,15 +1097,14 @@ static void blk_mq_insert_requests(struct request_queue *q, struct request *rq; rq = list_first_entry(list, struct request, queuelist); + BUG_ON(rq->mq_ctx != ctx); list_del_init(&rq->queuelist); - rq->mq_ctx = ctx; - __blk_mq_insert_req_list(hctx, ctx, rq, false); + __blk_mq_insert_req_list(hctx, rq, false); } blk_mq_hctx_mark_pending(hctx, ctx); spin_unlock(&ctx->lock); blk_mq_run_hw_queue(hctx, from_schedule); - blk_mq_put_ctx(current_ctx); } static int plug_ctx_cmp(void *priv, struct list_head *a, struct list_head *b) @@ -1630,16 +1619,17 @@ static int blk_mq_alloc_bitmap(struct blk_mq_ctxmap *bitmap, int node) return 0; } +/* + * 'cpu' is going away. splice any existing rq_list entries from this + * software queue to the hw queue dispatch list, and ensure that it + * gets run. + */ static int blk_mq_hctx_cpu_offline(struct blk_mq_hw_ctx *hctx, int cpu) { - struct request_queue *q = hctx->queue; struct blk_mq_ctx *ctx; LIST_HEAD(tmp); - /* - * Move ctx entries to new CPU, if this one is going away. - */ - ctx = __blk_mq_get_ctx(q, cpu); + ctx = __blk_mq_get_ctx(hctx->queue, cpu); spin_lock(&ctx->lock); if (!list_empty(&ctx->rq_list)) { @@ -1651,24 +1641,11 @@ static int blk_mq_hctx_cpu_offline(struct blk_mq_hw_ctx *hctx, int cpu) if (list_empty(&tmp)) return NOTIFY_OK; - ctx = blk_mq_get_ctx(q); - spin_lock(&ctx->lock); - - while (!list_empty(&tmp)) { - struct request *rq; - - rq = list_first_entry(&tmp, struct request, queuelist); - rq->mq_ctx = ctx; - list_move_tail(&rq->queuelist, &ctx->rq_list); - } - - hctx = q->mq_ops->map_queue(q, ctx->cpu); - blk_mq_hctx_mark_pending(hctx, ctx); - - spin_unlock(&ctx->lock); + spin_lock(&hctx->lock); + list_splice_tail_init(&tmp, &hctx->dispatch); + spin_unlock(&hctx->lock); blk_mq_run_hw_queue(hctx, true); - blk_mq_put_ctx(ctx); return NOTIFY_OK; } -- cgit v0.10.2 From 0e87e58bf60edb6bb28e493c7a143f41b091a5e5 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 24 Aug 2016 15:38:01 -0600 Subject: blk-mq: improve warning for running a queue on the wrong CPU __blk_mq_run_hw_queue() currently warns if we are running the queue on a CPU that isn't set in its mask. However, this can happen if a CPU is being offlined, and the workqueue handling will place the work on CPU0 instead. Improve the warning so that it only triggers if the batch cpu in the hardware queue is currently online. If it triggers for that case, then it's indicative of a flow problem in blk-mq, so we want to retain it for that case. Signed-off-by: Jens Axboe diff --git a/block/blk-mq.c b/block/blk-mq.c index 729169d..13f5a6c 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -793,11 +793,12 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx) struct list_head *dptr; int queued; - WARN_ON(!cpumask_test_cpu(raw_smp_processor_id(), hctx->cpumask)); - if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state))) return; + WARN_ON(!cpumask_test_cpu(raw_smp_processor_id(), hctx->cpumask) && + cpu_online(hctx->next_cpu)); + hctx->run++; /* -- cgit v0.10.2 From a45f9d41c9dd2c28e38b9b88f69c39bc63807de9 Mon Sep 17 00:00:00 2001 From: Xing Zheng Date: Wed, 24 Aug 2016 11:29:39 -0700 Subject: clk: rockchip: mark aclk_emmc_noc as a critical clock on rk3399 We don't have code to handle any of the noc clocks in rk3399 and they're all just listed as critical clocks. Let's do the same for aclk_emmc_noc. Without this clock being marked as critical we have problems around suspend/resume after commit 20c389e656a8 ("clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399"). Before that change we were presumably not actually gating any of these clocks because we were setting the wrong gate. Fixes: 20c389e656a8 ("clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399") Signed-off-by: Xing Zheng Signed-off-by: Douglas Anderson Signed-off-by: Heiko Stuebner diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index ec5b2fd..cdfabeb 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -1484,6 +1484,7 @@ static const char *const rk3399_cru_critical_clocks[] __initconst = { "hclk_perilp1", "hclk_perilp1_noc", "aclk_dmac0_perilp", + "aclk_emmc_noc", "gpll_hclk_perilp1_src", "gpll_aclk_perilp0_src", "gpll_aclk_perihp_src", -- cgit v0.10.2 From 299f6230bc6d0ccd5f95bb0fb865d80a9c7d5ccc Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Wed, 24 Aug 2016 21:12:58 -0400 Subject: dm flakey: fix reads to be issued if drop_writes configured v4.8-rc3 commit 99f3c90d0d ("dm flakey: error READ bios during the down_interval") overlooked the 'drop_writes' feature, which is meant to allow reads to be issued rather than errored, during the down_interval. Fixes: 99f3c90d0d ("dm flakey: error READ bios during the down_interval") Reported-by: Qu Wenruo Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index 97e446d..6a2e8dd 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-flakey.c @@ -289,15 +289,13 @@ static int flakey_map(struct dm_target *ti, struct bio *bio) pb->bio_submitted = true; /* - * Map reads as normal only if corrupt_bio_byte set. + * Error reads if neither corrupt_bio_byte or drop_writes are set. + * Otherwise, flakey_end_io() will decide if the reads should be modified. */ if (bio_data_dir(bio) == READ) { - /* If flags were specified, only corrupt those that match. */ - if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) && - all_corrupt_bio_flags_match(bio, fc)) - goto map_bio; - else + if (!fc->corrupt_bio_byte && !test_bit(DROP_WRITES, &fc->flags)) return -EIO; + goto map_bio; } /* @@ -334,14 +332,21 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error) struct flakey_c *fc = ti->private; struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data)); - /* - * Corrupt successful READs while in down state. - */ if (!error && pb->bio_submitted && (bio_data_dir(bio) == READ)) { - if (fc->corrupt_bio_byte) + if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) && + all_corrupt_bio_flags_match(bio, fc)) { + /* + * Corrupt successful matching READs while in down state. + */ corrupt_bio_data(bio, fc); - else + + } else if (!test_bit(DROP_WRITES, &fc->flags)) { + /* + * Error read during the down_interval if drop_writes + * wasn't configured. + */ return -EIO; + } } return error; -- cgit v0.10.2 From 9c5a559d9495bba6e5b6c5ee4e8e2f2b71088684 Mon Sep 17 00:00:00 2001 From: Heinz Mauelshagen Date: Tue, 23 Aug 2016 21:17:48 +0200 Subject: dm log: fix unitialized bio operation flags Commit e6047149db ("dm: use bio op accessors") switched DM over to using bio_set_op_attrs() but didn't take care to initialize lc->io_req.bi_op_flags in dm-log.c:rw_header(). This caused rw_header()'s call to dm_io() to make bio->bi_op_flags be uninitialized in dm-io.c:do_region(), which ultimately resulted in a SCSI BUG() in sd_init_command(). Also, adjust rw_header() and its callers to use REQ_OP_{READ|WRITE}. Fixes: e6047149db ("dm: use bio op accessors") Signed-off-by: Heinz Mauelshagen Reviewed-by: Shaun Tancheff Signed-off-by: Mike Snitzer diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index 4ca2d1d..07fc1ad 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -291,9 +291,10 @@ static void header_from_disk(struct log_header_core *core, struct log_header_dis core->nr_regions = le64_to_cpu(disk->nr_regions); } -static int rw_header(struct log_c *lc, int rw) +static int rw_header(struct log_c *lc, int op) { - lc->io_req.bi_op = rw; + lc->io_req.bi_op = op; + lc->io_req.bi_op_flags = 0; return dm_io(&lc->io_req, 1, &lc->header_location, NULL); } @@ -316,7 +317,7 @@ static int read_header(struct log_c *log) { int r; - r = rw_header(log, READ); + r = rw_header(log, REQ_OP_READ); if (r) return r; @@ -630,7 +631,7 @@ static int disk_resume(struct dm_dirty_log *log) header_to_disk(&lc->header, lc->disk_header); /* write the new header */ - r = rw_header(lc, WRITE); + r = rw_header(lc, REQ_OP_WRITE); if (!r) { r = flush_header(lc); if (r) @@ -698,7 +699,7 @@ static int disk_flush(struct dm_dirty_log *log) log_clear_bit(lc, lc->clean_bits, i); } - r = rw_header(lc, WRITE); + r = rw_header(lc, REQ_OP_WRITE); if (r) fail_log_device(lc); else { -- cgit v0.10.2 From 16590a228109e2f318d2cc6466221134cfab723a Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 22 Aug 2016 14:57:42 -0400 Subject: SUNRPC: Silence WARN_ON when NFSv4.1 over RDMA is in use Using NFSv4.1 on RDMA should be safe, so broaden the new checks in rpc_create(). WARN_ON_ONCE is used, matching most other WARN call sites in clnt.c. Fixes: 39a9beab5acb ("rpc: share one xps between all backchannels") Fixes: d50039ea5ee6 ("nfsd4/rpc: move backchannel create logic...") Signed-off-by: Chuck Lever Reviewed-by: J. Bruce Fields Signed-off-by: Trond Myklebust diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 7f79fb7..66f23b3 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -453,7 +453,7 @@ static struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args, struct rpc_xprt_switch *xps; if (args->bc_xprt && args->bc_xprt->xpt_bc_xps) { - WARN_ON(args->protocol != XPRT_TRANSPORT_BC_TCP); + WARN_ON_ONCE(!(args->protocol & XPRT_TRANSPORT_BC)); xps = args->bc_xprt->xpt_bc_xps; xprt_switch_get(xps); } else { @@ -520,7 +520,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) char servername[48]; if (args->bc_xprt) { - WARN_ON(args->protocol != XPRT_TRANSPORT_BC_TCP); + WARN_ON_ONCE(!(args->protocol & XPRT_TRANSPORT_BC)); xprt = args->bc_xprt->xpt_bc_xprt; if (xprt) { xprt_get(xprt); -- cgit v0.10.2 From 23fd537c9508fb6e3b93ddf23982f51afc087781 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 24 Aug 2016 14:33:27 +0300 Subject: usb: gadget: udc: core: don't starve DMA resources Always unmap all SG entries as required by DMA API Fixes: a698908d3b3b ("usb: gadget: add generic map/unmap request utilities") Cc: # v3.4+ Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 934f838..40c04bb 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -827,7 +827,7 @@ void usb_gadget_unmap_request_by_dev(struct device *dev, return; if (req->num_mapped_sgs) { - dma_unmap_sg(dev, req->sg, req->num_mapped_sgs, + dma_unmap_sg(dev, req->sg, req->num_sgs, is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); req->num_mapped_sgs = 0; -- cgit v0.10.2 From 696fe69d7e631f00f23b0ef1694d9b90058dca54 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 24 Aug 2016 14:32:39 +0300 Subject: usb: dwc3: debug: fix ep name on trace output There was a typo when generating endpoint name which would be very confusing when debugging. Fix it. Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 22dfc3d..33ab2a2 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -192,7 +192,7 @@ dwc3_ep_event_string(const struct dwc3_event_depevt *event) int ret; ret = sprintf(str, "ep%d%s: ", epnum >> 1, - (epnum & 1) ? "in" : "in"); + (epnum & 1) ? "in" : "out"); if (ret < 0) return "UNKNOWN"; -- cgit v0.10.2 From 6f8245b4e37c2072d3daea24e19dbc0162ffd22c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 24 Aug 2016 14:40:13 +0300 Subject: usb: dwc3: gadget: always decrement by 1 We need to decrement in both cases (enq > deq and enq < deq) Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 122e64d..7a8d3d8 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -884,12 +884,9 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) return DWC3_TRB_NUM - 1; } - trbs_left = dep->trb_dequeue - dep->trb_enqueue; + trbs_left = dep->trb_dequeue - dep->trb_enqueue - 1; trbs_left &= (DWC3_TRB_NUM - 1); - if (dep->trb_dequeue < dep->trb_enqueue) - trbs_left--; - return trbs_left; } -- cgit v0.10.2 From fd363bd417ddb6103564c69cfcbd92d9a7877431 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Wed, 24 Aug 2016 18:02:08 +0100 Subject: arm64: avoid TLB conflict with CONFIG_RANDOMIZE_BASE When CONFIG_RANDOMIZE_BASE is selected, we modify the page tables to remap the kernel at a newly-chosen VA range. We do this with the MMU disabled, but do not invalidate TLBs prior to re-enabling the MMU with the new tables. Thus the old mappings entries may still live in TLBs, and we risk violating Break-Before-Make requirements, leading to TLB conflicts and/or other issues. We invalidate TLBs when we uninsall the idmap in early setup code, but prior to this we are subject to issues relating to the Break-Before-Make violation. Avoid these issues by invalidating the TLBs before the new mappings can be used by the hardware. Fixes: f80fb3a3d508 ("arm64: add support for kernel ASLR") Cc: # 4.6+ Acked-by: Ard Biesheuvel Acked-by: Will Deacon Signed-off-by: Mark Rutland Signed-off-by: Catalin Marinas diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index b77f583..3e7b050 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -757,6 +757,9 @@ ENTRY(__enable_mmu) isb bl __create_page_tables // recreate kernel mapping + tlbi vmalle1 // Remove any stale TLB entries + dsb nsh + msr sctlr_el1, x19 // re-enable the MMU isb ic iallu // flush instructions fetched -- cgit v0.10.2 From 89e1f6d2b956649fbe0704d543a90b8e0cf872b0 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Mon, 22 Aug 2016 01:02:18 +0800 Subject: netfilter: nft_reject: restrict to INPUT/FORWARD/OUTPUT After I add the nft rule "nft add rule filter prerouting reject with tcp reset", kernel panic happened on my system: NULL pointer dereference at ... IP: [] nf_send_reset+0xaf/0x400 Call Trace: [] ? nf_reject_ip_tcphdr_get+0x160/0x160 [] nft_reject_ipv4_eval+0x61/0xb0 [nft_reject_ipv4] [] nft_do_chain+0x1fa/0x890 [nf_tables] [] ? __nft_trace_packet+0x170/0x170 [nf_tables] [] ? nf_ct_invert_tuple+0xb0/0xc0 [nf_conntrack] [] ? nf_nat_setup_info+0x5d4/0x650 [nf_nat] [...] Because in the PREROUTING chain, routing information is not exist, then we will dereference the NULL pointer and oops happen. So we restrict reject expression to INPUT, FORWARD and OUTPUT chain. This is consistent with iptables REJECT target. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/include/net/netfilter/nft_reject.h b/include/net/netfilter/nft_reject.h index 60fa153..02e28c5 100644 --- a/include/net/netfilter/nft_reject.h +++ b/include/net/netfilter/nft_reject.h @@ -8,6 +8,10 @@ struct nft_reject { extern const struct nla_policy nft_reject_policy[]; +int nft_reject_validate(const struct nft_ctx *ctx, + const struct nft_expr *expr, + const struct nft_data **data); + int nft_reject_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]); diff --git a/net/ipv4/netfilter/nft_reject_ipv4.c b/net/ipv4/netfilter/nft_reject_ipv4.c index c24f41c..2c2553b 100644 --- a/net/ipv4/netfilter/nft_reject_ipv4.c +++ b/net/ipv4/netfilter/nft_reject_ipv4.c @@ -46,6 +46,7 @@ static const struct nft_expr_ops nft_reject_ipv4_ops = { .eval = nft_reject_ipv4_eval, .init = nft_reject_init, .dump = nft_reject_dump, + .validate = nft_reject_validate, }; static struct nft_expr_type nft_reject_ipv4_type __read_mostly = { diff --git a/net/ipv6/netfilter/nft_reject_ipv6.c b/net/ipv6/netfilter/nft_reject_ipv6.c index 533cd57..92bda99 100644 --- a/net/ipv6/netfilter/nft_reject_ipv6.c +++ b/net/ipv6/netfilter/nft_reject_ipv6.c @@ -47,6 +47,7 @@ static const struct nft_expr_ops nft_reject_ipv6_ops = { .eval = nft_reject_ipv6_eval, .init = nft_reject_init, .dump = nft_reject_dump, + .validate = nft_reject_validate, }; static struct nft_expr_type nft_reject_ipv6_type __read_mostly = { diff --git a/net/netfilter/nft_reject.c b/net/netfilter/nft_reject.c index 0522fc9..c64de3f7 100644 --- a/net/netfilter/nft_reject.c +++ b/net/netfilter/nft_reject.c @@ -26,11 +26,27 @@ const struct nla_policy nft_reject_policy[NFTA_REJECT_MAX + 1] = { }; EXPORT_SYMBOL_GPL(nft_reject_policy); +int nft_reject_validate(const struct nft_ctx *ctx, + const struct nft_expr *expr, + const struct nft_data **data) +{ + return nft_chain_validate_hooks(ctx->chain, + (1 << NF_INET_LOCAL_IN) | + (1 << NF_INET_FORWARD) | + (1 << NF_INET_LOCAL_OUT)); +} +EXPORT_SYMBOL_GPL(nft_reject_validate); + int nft_reject_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { struct nft_reject *priv = nft_expr_priv(expr); + int err; + + err = nft_reject_validate(ctx, expr, NULL); + if (err < 0) + return err; if (tb[NFTA_REJECT_TYPE] == NULL) return -EINVAL; diff --git a/net/netfilter/nft_reject_inet.c b/net/netfilter/nft_reject_inet.c index 759ca52..e79d9ca 100644 --- a/net/netfilter/nft_reject_inet.c +++ b/net/netfilter/nft_reject_inet.c @@ -66,7 +66,11 @@ static int nft_reject_inet_init(const struct nft_ctx *ctx, const struct nlattr * const tb[]) { struct nft_reject *priv = nft_expr_priv(expr); - int icmp_code; + int icmp_code, err; + + err = nft_reject_validate(ctx, expr, NULL); + if (err < 0) + return err; if (tb[NFTA_REJECT_TYPE] == NULL) return -EINVAL; @@ -124,6 +128,7 @@ static const struct nft_expr_ops nft_reject_inet_ops = { .eval = nft_reject_inet_eval, .init = nft_reject_inet_init, .dump = nft_reject_inet_dump, + .validate = nft_reject_validate, }; static struct nft_expr_type nft_reject_inet_type __read_mostly = { -- cgit v0.10.2 From 1c1ea4f781db9f754842b9c31d1eff400d17cddc Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 19 Jul 2016 15:36:05 -0700 Subject: Btrfs: fix memory leak of reloc_root When some critical errors occur and FS would be flipped into RO, if we have an on-going balance, we can end up with a memory leak of root->reloc_root since btrfs_drop_snapshots() bails out without freeing reloc_root at the very early start. However, we're not able to free reloc_root in btrfs_drop_snapshots() because its caller, merge_reloc_roots(), still needs to access it to cleanup reloc_root's rbtree. This makes us free reloc_root when we're going to free fs/file roots. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index ff2362d..4a34c9f 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3744,8 +3744,15 @@ void btrfs_drop_and_free_fs_root(struct btrfs_fs_info *fs_info, if (btrfs_root_refs(&root->root_item) == 0) synchronize_srcu(&fs_info->subvol_srcu); - if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) + if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) { btrfs_free_log(NULL, root); + if (root->reloc_root) { + free_extent_buffer(root->reloc_root->node); + free_extent_buffer(root->reloc_root->commit_root); + btrfs_put_fs_root(root->reloc_root); + root->reloc_root = NULL; + } + } if (root->free_ino_pinned) __btrfs_remove_free_space_cache(root->free_ino_pinned); -- cgit v0.10.2 From d8422ba334f9df16e071bc77707e55fd7f8446ae Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Wed, 20 Jul 2016 15:04:18 +0800 Subject: btrfs: backref: Fix soft lockup in __merge_refs function When over 1000 file extents refers to one extent, find_parent_nodes() will be obviously slow, due to the O(n^2)~O(n^3) loops inside __merge_refs(). The following ftrace shows the cubic growth of execution time: 256 refs 5) + 91.768 us | __add_keyed_refs.isra.12 [btrfs](); 5) 1.447 us | __add_missing_keys.isra.13 [btrfs](); 5) ! 114.544 us | __merge_refs [btrfs](); 5) ! 136.399 us | __merge_refs [btrfs](); 512 refs 6) ! 279.859 us | __add_keyed_refs.isra.12 [btrfs](); 6) 3.164 us | __add_missing_keys.isra.13 [btrfs](); 6) ! 442.498 us | __merge_refs [btrfs](); 6) # 2091.073 us | __merge_refs [btrfs](); and 1024 refs 7) ! 368.683 us | __add_keyed_refs.isra.12 [btrfs](); 7) 4.810 us | __add_missing_keys.isra.13 [btrfs](); 7) # 2043.428 us | __merge_refs [btrfs](); 7) * 18964.23 us | __merge_refs [btrfs](); And sort them into the following char: (Unit: us) ------------------------------------------------------------------------ Trace function | 256 ref | 512 refs | 1024 refs | ------------------------------------------------------------------------ __add_keyed_refs | 91 | 249 | 368 | __add_missing_keys | 1 | 3 | 4 | __merge_refs 1st call | 114 | 442 | 2043 | __merge_refs 2nd call | 136 | 2091 | 18964 | ------------------------------------------------------------------------ We can see the that __add_keyed_refs() grows almost in linear behavior. And __add_missing_keys() in this case doesn't change much or takes much time. While for the 1st __merge_refs() it's square growth for the 2nd __merge_refs() call it's cubic growth. It's no doubt that merge_refs() will take a long long time to execute if the number of refs continues its grows. So add a cond_resced() into the loop of __merge_refs(). Although this will solve the problem of soft lockup, we need to use the new rb_tree based structure introduced by Lu Fengqi to really solve the long execution time. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 2b88439..455a6b2 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -589,6 +589,7 @@ static void __merge_refs(struct list_head *head, int mode) list_del(&ref2->list); kmem_cache_free(btrfs_prelim_ref_cache, ref2); + cond_resched(); } } -- cgit v0.10.2 From f3bca8028bd934e96257b8bd1143e6474fe98465 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Wed, 20 Jul 2016 17:33:44 -0700 Subject: Btrfs: add ASSERT for block group's memory leak This adds several ASSERT()' s to report memory leak of block group cache. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index c2b81b0..e962b0e 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -9942,6 +9942,7 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info) block_group->iref = 0; block_group->inode = NULL; spin_unlock(&block_group->lock); + ASSERT(block_group->io_ctl.inode == NULL); iput(inode); last = block_group->key.objectid + block_group->key.offset; btrfs_put_block_group(block_group); @@ -9999,6 +10000,10 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info) free_excluded_extents(info->extent_root, block_group); btrfs_remove_free_space_cache(block_group); + ASSERT(list_empty(&block_group->dirty_list)); + ASSERT(list_empty(&block_group->io_list)); + ASSERT(list_empty(&block_group->bg_list)); + ASSERT(atomic_read(&block_group->count) == 1); btrfs_put_block_group(block_group); spin_lock(&info->block_group_cache_lock); -- cgit v0.10.2 From eecba891d38051ebf7f4af6394d188a5fd151a6a Mon Sep 17 00:00:00 2001 From: Alex Lyakas Date: Sun, 6 Dec 2015 12:32:31 +0200 Subject: btrfs: flush_space: treat return value of do_chunk_alloc properly do_chunk_alloc returns 1 when it succeeds to allocate a new chunk. But flush_space will not convert this to 0, and will also return 1. As a result, reserve_metadata_bytes will think that flush_space failed, and may potentially return this value "1" to the caller (depends how reserve_metadata_bytes was called). The caller will also treat this as an error. For example, btrfs_block_rsv_refill does: int ret = -ENOSPC; ... ret = reserve_metadata_bytes(root, block_rsv, num_bytes, flush); if (!ret) { block_rsv_add_bytes(block_rsv, num_bytes, 0); return 0; } return ret; So it will return -ENOSPC. Signed-off-by: Alex Lyakas Reviewed-by: Josef Bacik Reviewed-by: Liu Bo Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index e962b0e..d2cc16f 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4882,7 +4882,7 @@ static int flush_space(struct btrfs_root *root, btrfs_get_alloc_profile(root, 0), CHUNK_ALLOC_NO_FORCE); btrfs_end_transaction(trans, root); - if (ret == -ENOSPC) + if (ret > 0 || ret == -ENOSPC) ret = 0; break; case COMMIT_TRANS: -- cgit v0.10.2 From d2c609b834d62f1e91f1635a27dca29f7806d3d6 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Mon, 15 Aug 2016 12:10:33 -0400 Subject: btrfs: properly track when rescan worker is running The qgroup_flags field is overloaded such that it reflects the on-disk status of qgroups and the runtime state. The BTRFS_QGROUP_STATUS_FLAG_RESCAN flag is used to indicate that a rescan operation is in progress, but if the file system is unmounted while a rescan is running, the rescan operation is paused. If the file system is then mounted read-only, the flag will still be present but the rescan operation will not have been resumed. When we go to umount, btrfs_qgroup_wait_for_completion will see the flag and interpret it to mean that the rescan worker is still running and will wait for a completion that will never come. This patch uses a separate flag to indicate when the worker is running. The locking and state surrounding the qgroup rescan worker needs a lot of attention beyond this patch but this is enough to avoid a hung umount. Cc: # v4.4+ Signed-off-by; Jeff Mahoney Reviewed-by: Qu Wenruo Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index f66a0ba..acc6850 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1028,6 +1028,7 @@ struct btrfs_fs_info { struct btrfs_workqueue *qgroup_rescan_workers; struct completion qgroup_rescan_completion; struct btrfs_work qgroup_rescan_work; + bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ /* filesystem state */ unsigned long fs_state; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 4a34c9f..f5b2a7f 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2304,6 +2304,7 @@ static void btrfs_init_qgroup(struct btrfs_fs_info *fs_info) fs_info->quota_enabled = 0; fs_info->pending_quota_state = 0; fs_info->qgroup_ulist = NULL; + fs_info->qgroup_rescan_running = false; mutex_init(&fs_info->qgroup_rescan_lock); } diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 93ee1c1..3fe295e 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -2303,6 +2303,10 @@ static void btrfs_qgroup_rescan_worker(struct btrfs_work *work) int err = -ENOMEM; int ret = 0; + mutex_lock(&fs_info->qgroup_rescan_lock); + fs_info->qgroup_rescan_running = true; + mutex_unlock(&fs_info->qgroup_rescan_lock); + path = btrfs_alloc_path(); if (!path) goto out; @@ -2369,6 +2373,9 @@ out: } done: + mutex_lock(&fs_info->qgroup_rescan_lock); + fs_info->qgroup_rescan_running = false; + mutex_unlock(&fs_info->qgroup_rescan_lock); complete_all(&fs_info->qgroup_rescan_completion); } @@ -2494,7 +2501,7 @@ int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info) mutex_lock(&fs_info->qgroup_rescan_lock); spin_lock(&fs_info->qgroup_lock); - running = fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN; + running = fs_info->qgroup_rescan_running; spin_unlock(&fs_info->qgroup_lock); mutex_unlock(&fs_info->qgroup_rescan_lock); -- cgit v0.10.2 From d06f23d6a947c9abae41dc46be69a56baf36f436 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Mon, 8 Aug 2016 22:08:06 -0400 Subject: btrfs: waiting on qgroup rescan should not always be interruptible We wait on qgroup rescan completion in three places: file system shutdown, the quota disable ioctl, and the rescan wait ioctl. If the user sends a signal while we're waiting, we continue happily along. This is expected behavior for the rescan wait ioctl. It's racy in the shutdown path but mostly works due to other unrelated synchronization points. In the quota disable path, it Oopses the kernel pretty much immediately. Cc: # v4.4+ Signed-off-by: Jeff Mahoney Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index f5b2a7f..7857f64 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3864,7 +3864,7 @@ void close_ctree(struct btrfs_root *root) smp_mb(); /* wait for the qgroup rescan worker to stop */ - btrfs_qgroup_wait_for_completion(fs_info); + btrfs_qgroup_wait_for_completion(fs_info, false); /* wait for the uuid_scan task to finish */ down(&fs_info->uuid_tree_rescan_sem); diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 14ed1e9..b2a2da5 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -5084,7 +5084,7 @@ static long btrfs_ioctl_quota_rescan_wait(struct file *file, void __user *arg) if (!capable(CAP_SYS_ADMIN)) return -EPERM; - return btrfs_qgroup_wait_for_completion(root->fs_info); + return btrfs_qgroup_wait_for_completion(root->fs_info, true); } static long _btrfs_ioctl_set_received_subvol(struct file *file, diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 3fe295e..13eb6a7 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -995,7 +995,7 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans, goto out; fs_info->quota_enabled = 0; fs_info->pending_quota_state = 0; - btrfs_qgroup_wait_for_completion(fs_info); + btrfs_qgroup_wait_for_completion(fs_info, false); spin_lock(&fs_info->qgroup_lock); quota_root = fs_info->quota_root; fs_info->quota_root = NULL; @@ -2494,7 +2494,8 @@ btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info) return 0; } -int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info) +int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info, + bool interruptible) { int running; int ret = 0; @@ -2505,9 +2506,14 @@ int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info) spin_unlock(&fs_info->qgroup_lock); mutex_unlock(&fs_info->qgroup_rescan_lock); - if (running) + if (!running) + return 0; + + if (interruptible) ret = wait_for_completion_interruptible( &fs_info->qgroup_rescan_completion); + else + wait_for_completion(&fs_info->qgroup_rescan_completion); return ret; } diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h index 710887c..af3e557 100644 --- a/fs/btrfs/qgroup.h +++ b/fs/btrfs/qgroup.h @@ -46,7 +46,8 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info); void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info); -int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info); +int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info, + bool interruptible); int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, u64 src, u64 dst); int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, -- cgit v0.10.2 From cb93b52cc005ba0e470845b519c662e661d5113c Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Mon, 15 Aug 2016 10:36:50 +0800 Subject: btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent() Refactor btrfs_qgroup_insert_dirty_extent() function, to two functions: 1. btrfs_qgroup_insert_dirty_extent_nolock() Almost the same with original code. For delayed_ref usage, which has delayed refs locked. Change the return value type to int, since caller never needs the pointer, but only needs to know if they need to free the allocated memory. 2. btrfs_qgroup_insert_dirty_extent() The more encapsulated version. Will do the delayed_refs lock, memory allocation, quota enabled check and other things. The original design is to keep exported functions to minimal, but since more btrfs hacks exposed, like replacing path in balance, we need to record dirty extents manually, so we have to add such functions. Also, add comment for both functions, to info developers how to keep qgroup correct when doing hacks. Cc: Mark Fasheh Signed-off-by: Qu Wenruo Reviewed-and-Tested-by: Goldwyn Rodrigues Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index d9ddcfc..ac02e04 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -541,7 +541,6 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, struct btrfs_delayed_ref_head *existing; struct btrfs_delayed_ref_head *head_ref = NULL; struct btrfs_delayed_ref_root *delayed_refs; - struct btrfs_qgroup_extent_record *qexisting; int count_mod = 1; int must_insert_reserved = 0; @@ -606,10 +605,8 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, qrecord->num_bytes = num_bytes; qrecord->old_roots = NULL; - qexisting = btrfs_qgroup_insert_dirty_extent(fs_info, - delayed_refs, - qrecord); - if (qexisting) + if(btrfs_qgroup_insert_dirty_extent_nolock(fs_info, + delayed_refs, qrecord)) kfree(qrecord); } diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index d2cc16f..d108727 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -8521,35 +8521,6 @@ reada: wc->reada_slot = slot; } -/* - * These may not be seen by the usual inc/dec ref code so we have to - * add them here. - */ -static int record_one_subtree_extent(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 bytenr, - u64 num_bytes) -{ - struct btrfs_qgroup_extent_record *qrecord; - struct btrfs_delayed_ref_root *delayed_refs; - - qrecord = kmalloc(sizeof(*qrecord), GFP_NOFS); - if (!qrecord) - return -ENOMEM; - - qrecord->bytenr = bytenr; - qrecord->num_bytes = num_bytes; - qrecord->old_roots = NULL; - - delayed_refs = &trans->transaction->delayed_refs; - spin_lock(&delayed_refs->lock); - if (btrfs_qgroup_insert_dirty_extent(trans->fs_info, - delayed_refs, qrecord)) - kfree(qrecord); - spin_unlock(&delayed_refs->lock); - - return 0; -} - static int account_leaf_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *eb) @@ -8583,7 +8554,8 @@ static int account_leaf_items(struct btrfs_trans_handle *trans, num_bytes = btrfs_file_extent_disk_num_bytes(eb, fi); - ret = record_one_subtree_extent(trans, root, bytenr, num_bytes); + ret = btrfs_qgroup_insert_dirty_extent(trans, root->fs_info, + bytenr, num_bytes, GFP_NOFS); if (ret) return ret; } @@ -8732,8 +8704,9 @@ walk_down: btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); path->locks[level] = BTRFS_READ_LOCK_BLOCKING; - ret = record_one_subtree_extent(trans, root, child_bytenr, - root->nodesize); + ret = btrfs_qgroup_insert_dirty_extent(trans, + root->fs_info, child_bytenr, + root->nodesize, GFP_NOFS); if (ret) goto out; } diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 13eb6a7..8db2e29 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1453,10 +1453,9 @@ int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans, return ret; } -struct btrfs_qgroup_extent_record * -btrfs_qgroup_insert_dirty_extent(struct btrfs_fs_info *fs_info, - struct btrfs_delayed_ref_root *delayed_refs, - struct btrfs_qgroup_extent_record *record) +int btrfs_qgroup_insert_dirty_extent_nolock(struct btrfs_fs_info *fs_info, + struct btrfs_delayed_ref_root *delayed_refs, + struct btrfs_qgroup_extent_record *record) { struct rb_node **p = &delayed_refs->dirty_extent_root.rb_node; struct rb_node *parent_node = NULL; @@ -1475,12 +1474,42 @@ btrfs_qgroup_insert_dirty_extent(struct btrfs_fs_info *fs_info, else if (bytenr > entry->bytenr) p = &(*p)->rb_right; else - return entry; + return 1; } rb_link_node(&record->node, parent_node, p); rb_insert_color(&record->node, &delayed_refs->dirty_extent_root); - return NULL; + return 0; +} + +int btrfs_qgroup_insert_dirty_extent(struct btrfs_trans_handle *trans, + struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes, + gfp_t gfp_flag) +{ + struct btrfs_qgroup_extent_record *record; + struct btrfs_delayed_ref_root *delayed_refs; + int ret; + + if (!fs_info->quota_enabled || bytenr == 0 || num_bytes == 0) + return 0; + if (WARN_ON(trans == NULL)) + return -EINVAL; + record = kmalloc(sizeof(*record), gfp_flag); + if (!record) + return -ENOMEM; + + delayed_refs = &trans->transaction->delayed_refs; + record->bytenr = bytenr; + record->num_bytes = num_bytes; + record->old_roots = NULL; + + spin_lock(&delayed_refs->lock); + ret = btrfs_qgroup_insert_dirty_extent_nolock(fs_info, delayed_refs, + record); + spin_unlock(&delayed_refs->lock); + if (ret > 0) + kfree(record); + return 0; } #define UPDATE_NEW 0 diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h index af3e557..1bc64c8 100644 --- a/fs/btrfs/qgroup.h +++ b/fs/btrfs/qgroup.h @@ -64,10 +64,35 @@ void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); struct btrfs_delayed_extent_op; int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); -struct btrfs_qgroup_extent_record * -btrfs_qgroup_insert_dirty_extent(struct btrfs_fs_info *fs_info, - struct btrfs_delayed_ref_root *delayed_refs, - struct btrfs_qgroup_extent_record *record); +/* + * Insert one dirty extent record into @delayed_refs, informing qgroup to + * account that extent at commit trans time. + * + * No lock version, caller must acquire delayed ref lock and allocate memory. + * + * Return 0 for success insert + * Return >0 for existing record, caller can free @record safely. + * Error is not possible + */ +int btrfs_qgroup_insert_dirty_extent_nolock( + struct btrfs_fs_info *fs_info, + struct btrfs_delayed_ref_root *delayed_refs, + struct btrfs_qgroup_extent_record *record); + +/* + * Insert one dirty extent record into @delayed_refs, informing qgroup to + * account that extent at commit trans time. + * + * Better encapsulated version. + * + * Return 0 if the operation is done. + * Return <0 for error, like memory allocation failure or invalid parameter + * (NULL trans) + */ +int btrfs_qgroup_insert_dirty_extent(struct btrfs_trans_handle *trans, + struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes, + gfp_t gfp_flag); + int btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, -- cgit v0.10.2 From 62b99540a1d91e46422f0e04de50fc723812c421 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Mon, 15 Aug 2016 10:36:51 +0800 Subject: btrfs: relocation: Fix leaking qgroups numbers on data extents This patch fixes a REGRESSION introduced in 4.2, caused by the big quota rework. When balancing data extents, qgroup will leak all its numbers for relocated data extents. The relocation is done in the following steps for data extents: 1) Create data reloc tree and inode 2) Copy all data extents to data reloc tree And commit transaction 3) Create tree reloc tree(special snapshot) for any related subvolumes 4) Replace file extent in tree reloc tree with new extents in data reloc tree And commit transaction 5) Merge tree reloc tree with original fs, by swapping tree blocks For 1)~4), since tree reloc tree and data reloc tree doesn't count to qgroup, everything is OK. But for 5), the swapping of tree blocks will only info qgroup to track metadata extents. If metadata extents contain file extents, qgroup number for file extents will get lost, leading to corrupted qgroup accounting. The fix is, before commit transaction of step 5), manually info qgroup to track all file extents in data reloc tree. Since at commit transaction time, the tree swapping is done, and qgroup will account these data extents correctly. Cc: Mark Fasheh Reported-by: Mark Fasheh Reported-by: Filipe Manana Signed-off-by: Qu Wenruo Tested-by: Goldwyn Rodrigues Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index b26a5ae..27480ef 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -31,6 +31,7 @@ #include "async-thread.h" #include "free-space-cache.h" #include "inode-map.h" +#include "qgroup.h" /* * backref_node, mapping_node and tree_block start with this @@ -3916,6 +3917,90 @@ int prepare_to_relocate(struct reloc_control *rc) return 0; } +/* + * Qgroup fixer for data chunk relocation. + * The data relocation is done in the following steps + * 1) Copy data extents into data reloc tree + * 2) Create tree reloc tree(special snapshot) for related subvolumes + * 3) Modify file extents in tree reloc tree + * 4) Merge tree reloc tree with original fs tree, by swapping tree blocks + * + * The problem is, data and tree reloc tree are not accounted to qgroup, + * and 4) will only info qgroup to track tree blocks change, not file extents + * in the tree blocks. + * + * The good news is, related data extents are all in data reloc tree, so we + * only need to info qgroup to track all file extents in data reloc tree + * before commit trans. + */ +static int qgroup_fix_relocated_data_extents(struct btrfs_trans_handle *trans, + struct reloc_control *rc) +{ + struct btrfs_fs_info *fs_info = rc->extent_root->fs_info; + struct inode *inode = rc->data_inode; + struct btrfs_root *data_reloc_root = BTRFS_I(inode)->root; + struct btrfs_path *path; + struct btrfs_key key; + int ret = 0; + + if (!fs_info->quota_enabled) + return 0; + + /* + * Only for stage where we update data pointers the qgroup fix is + * valid. + * For MOVING_DATA stage, we will miss the timing of swapping tree + * blocks, and won't fix it. + */ + if (!(rc->stage == UPDATE_DATA_PTRS && rc->extents_found)) + return 0; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + key.objectid = btrfs_ino(inode); + key.type = BTRFS_EXTENT_DATA_KEY; + key.offset = 0; + + ret = btrfs_search_slot(NULL, data_reloc_root, &key, path, 0, 0); + if (ret < 0) + goto out; + + lock_extent(&BTRFS_I(inode)->io_tree, 0, (u64)-1); + while (1) { + struct btrfs_file_extent_item *fi; + + btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]); + if (key.objectid > btrfs_ino(inode)) + break; + if (key.type != BTRFS_EXTENT_DATA_KEY) + goto next; + fi = btrfs_item_ptr(path->nodes[0], path->slots[0], + struct btrfs_file_extent_item); + if (btrfs_file_extent_type(path->nodes[0], fi) != + BTRFS_FILE_EXTENT_REG) + goto next; + ret = btrfs_qgroup_insert_dirty_extent(trans, fs_info, + btrfs_file_extent_disk_bytenr(path->nodes[0], fi), + btrfs_file_extent_disk_num_bytes(path->nodes[0], fi), + GFP_NOFS); + if (ret < 0) + break; +next: + ret = btrfs_next_item(data_reloc_root, path); + if (ret < 0) + break; + if (ret > 0) { + ret = 0; + break; + } + } + unlock_extent(&BTRFS_I(inode)->io_tree, 0 , (u64)-1); +out: + btrfs_free_path(path); + return ret; +} + static noinline_for_stack int relocate_block_group(struct reloc_control *rc) { struct rb_root blocks = RB_ROOT; @@ -4102,10 +4187,16 @@ restart: /* get rid of pinned extents */ trans = btrfs_join_transaction(rc->extent_root); - if (IS_ERR(trans)) + if (IS_ERR(trans)) { err = PTR_ERR(trans); - else - btrfs_commit_transaction(trans, rc->extent_root); + goto out_free; + } + err = qgroup_fix_relocated_data_extents(trans, rc); + if (err < 0) { + btrfs_abort_transaction(trans, err); + goto out_free; + } + btrfs_commit_transaction(trans, rc->extent_root); out_free: btrfs_free_block_rsv(rc->extent_root, rc->block_rsv); btrfs_free_path(path); @@ -4468,10 +4559,16 @@ int btrfs_recover_relocation(struct btrfs_root *root) unset_reloc_control(rc); trans = btrfs_join_transaction(rc->extent_root); - if (IS_ERR(trans)) + if (IS_ERR(trans)) { err = PTR_ERR(trans); - else - err = btrfs_commit_transaction(trans, rc->extent_root); + goto out_free; + } + err = qgroup_fix_relocated_data_extents(trans, rc); + if (err < 0) { + btrfs_abort_transaction(trans, err); + goto out_free; + } + err = btrfs_commit_transaction(trans, rc->extent_root); out_free: kfree(rc); out: -- cgit v0.10.2 From df2c95f33e0a28b22509e4ee85365eedf32a1056 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Mon, 15 Aug 2016 10:36:52 +0800 Subject: btrfs: qgroup: Fix qgroup incorrectness caused by log replay When doing log replay at mount time(after power loss), qgroup will leak numbers of replayed data extents. The cause is almost the same of balance. So fix it by manually informing qgroup for owner changed extents. The bug can be detected by btrfs/119 test case. Cc: Mark Fasheh Signed-off-by: Qu Wenruo Reviewed-and-Tested-by: Goldwyn Rodrigues Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index fff3f3e..ffe92da 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -27,6 +27,7 @@ #include "backref.h" #include "hash.h" #include "compression.h" +#include "qgroup.h" /* magic values for the inode_only field in btrfs_log_inode: * @@ -680,6 +681,21 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, ins.type = BTRFS_EXTENT_ITEM_KEY; offset = key->offset - btrfs_file_extent_offset(eb, item); + /* + * Manually record dirty extent, as here we did a shallow + * file extent item copy and skip normal backref update, + * but modifying extent tree all by ourselves. + * So need to manually record dirty extent for qgroup, + * as the owner of the file extent changed from log tree + * (doesn't affect qgroup) to fs/file tree(affects qgroup) + */ + ret = btrfs_qgroup_insert_dirty_extent(trans, root->fs_info, + btrfs_file_extent_disk_bytenr(eb, item), + btrfs_file_extent_disk_num_bytes(eb, item), + GFP_NOFS); + if (ret < 0) + goto out; + if (ins.objectid > 0) { u64 csum_start; u64 csum_end; -- cgit v0.10.2 From dcb40c196fc85c6dfb28456480e5a882e26f567d Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Mon, 25 Jul 2016 15:51:38 +0800 Subject: btrfs: use correct offset for reloc_inode in prealloc_file_extent_cluster() In prealloc_file_extent_cluster(), btrfs_check_data_free_space() uses wrong file offset for reloc_inode, it uses cluster->start and cluster->end, which indeed are extent's bytenr. The correct value should be cluster->[start|end] minus block group's start bytenr. start bytenr cluster->start | | extent | extent | ...| extent | |----------------------------------------------------------------| | block group reloc_inode | Signed-off-by: Wang Xiaoguang Reviewed-by: Josef Bacik Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 27480ef..71b4b70 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3038,12 +3038,14 @@ int prealloc_file_extent_cluster(struct inode *inode, u64 num_bytes; int nr = 0; int ret = 0; + u64 prealloc_start = cluster->start - offset; + u64 prealloc_end = cluster->end - offset; BUG_ON(cluster->start != cluster->boundary[0]); inode_lock(inode); - ret = btrfs_check_data_free_space(inode, cluster->start, - cluster->end + 1 - cluster->start); + ret = btrfs_check_data_free_space(inode, prealloc_start, + prealloc_end + 1 - prealloc_start); if (ret) goto out; @@ -3064,8 +3066,8 @@ int prealloc_file_extent_cluster(struct inode *inode, break; nr++; } - btrfs_free_reserved_data_space(inode, cluster->start, - cluster->end + 1 - cluster->start); + btrfs_free_reserved_data_space(inode, prealloc_start, + prealloc_end + 1 - prealloc_start); out: inode_unlock(inode); return ret; -- cgit v0.10.2 From 4824f1f412f75e9f84b9cecbde828e8f4699f82d Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Mon, 25 Jul 2016 15:51:39 +0800 Subject: btrfs: divide btrfs_update_reserved_bytes() into two functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch divides btrfs_update_reserved_bytes() into btrfs_add_reserved_bytes() and btrfs_free_reserved_bytes(), and next patch will extend btrfs_add_reserved_bytes（）to fix some false ENOSPC error, please see later patch for detailed info. Signed-off-by: Wang Xiaoguang Reviewed-by: Josef Bacik Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index d108727..f1121db 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -104,9 +104,10 @@ static int find_next_key(struct btrfs_path *path, int level, struct btrfs_key *key); static void dump_space_info(struct btrfs_space_info *info, u64 bytes, int dump_block_groups); -static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, - u64 num_bytes, int reserve, - int delalloc); +static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache, + u64 num_bytes, int reserve, int delalloc); +static int btrfs_free_reserved_bytes(struct btrfs_block_group_cache *cache, + u64 num_bytes, int delalloc); static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes); int btrfs_pin_extent(struct btrfs_root *root, @@ -6497,19 +6498,14 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg) } /** - * btrfs_update_reserved_bytes - update the block_group and space info counters + * btrfs_add_reserved_bytes - update the block_group and space info counters * @cache: The cache we are manipulating * @num_bytes: The number of bytes in question * @reserve: One of the reservation enums * @delalloc: The blocks are allocated for the delalloc write * - * This is called by the allocator when it reserves space, or by somebody who is - * freeing space that was never actually used on disk. For example if you - * reserve some space for a new leaf in transaction A and before transaction A - * commits you free that leaf, you call this with reserve set to 0 in order to - * clear the reservation. - * - * Metadata reservations should be called with RESERVE_ALLOC so we do the proper + * This is called by the allocator when it reserves space. Metadata + * reservations should be called with RESERVE_ALLOC so we do the proper * ENOSPC accounting. For data we handle the reservation through clearing the * delalloc bits in the io_tree. We have to do this since we could end up * allocating less disk space for the amount of data we have reserved in the @@ -6519,44 +6515,65 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg) * make the reservation and return -EAGAIN, otherwise this function always * succeeds. */ -static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, - u64 num_bytes, int reserve, int delalloc) +static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache, + u64 num_bytes, int reserve, int delalloc) { struct btrfs_space_info *space_info = cache->space_info; int ret = 0; spin_lock(&space_info->lock); spin_lock(&cache->lock); - if (reserve != RESERVE_FREE) { - if (cache->ro) { - ret = -EAGAIN; - } else { - cache->reserved += num_bytes; - space_info->bytes_reserved += num_bytes; - if (reserve == RESERVE_ALLOC) { - trace_btrfs_space_reservation(cache->fs_info, - "space_info", space_info->flags, - num_bytes, 0); - space_info->bytes_may_use -= num_bytes; - } - - if (delalloc) - cache->delalloc_bytes += num_bytes; - } + if (cache->ro) { + ret = -EAGAIN; } else { - if (cache->ro) - space_info->bytes_readonly += num_bytes; - cache->reserved -= num_bytes; - space_info->bytes_reserved -= num_bytes; + cache->reserved += num_bytes; + space_info->bytes_reserved += num_bytes; + if (reserve == RESERVE_ALLOC) { + trace_btrfs_space_reservation(cache->fs_info, + "space_info", space_info->flags, + num_bytes, 0); + space_info->bytes_may_use -= num_bytes; + } if (delalloc) - cache->delalloc_bytes -= num_bytes; + cache->delalloc_bytes += num_bytes; } spin_unlock(&cache->lock); spin_unlock(&space_info->lock); return ret; } +/** + * btrfs_free_reserved_bytes - update the block_group and space info counters + * @cache: The cache we are manipulating + * @num_bytes: The number of bytes in question + * @delalloc: The blocks are allocated for the delalloc write + * + * This is called by somebody who is freeing space that was never actually used + * on disk. For example if you reserve some space for a new leaf in transaction + * A and before transaction A commits you free that leaf, you call this with + * reserve set to 0 in order to clear the reservation. + */ + +static int btrfs_free_reserved_bytes(struct btrfs_block_group_cache *cache, + u64 num_bytes, int delalloc) +{ + struct btrfs_space_info *space_info = cache->space_info; + int ret = 0; + + spin_lock(&space_info->lock); + spin_lock(&cache->lock); + if (cache->ro) + space_info->bytes_readonly += num_bytes; + cache->reserved -= num_bytes; + space_info->bytes_reserved -= num_bytes; + + if (delalloc) + cache->delalloc_bytes -= num_bytes; + spin_unlock(&cache->lock); + spin_unlock(&space_info->lock); + return ret; +} void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, struct btrfs_root *root) { @@ -7191,7 +7208,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans, WARN_ON(test_bit(EXTENT_BUFFER_DIRTY, &buf->bflags)); btrfs_add_free_space(cache, buf->start, buf->len); - btrfs_update_reserved_bytes(cache, buf->len, RESERVE_FREE, 0); + btrfs_free_reserved_bytes(cache, buf->len, 0); btrfs_put_block_group(cache); trace_btrfs_reserved_extent_free(root, buf->start, buf->len); pin = 0; @@ -7763,8 +7780,8 @@ checks: search_start - offset); BUG_ON(offset > search_start); - ret = btrfs_update_reserved_bytes(block_group, num_bytes, - alloc_type, delalloc); + ret = btrfs_add_reserved_bytes(block_group, num_bytes, + alloc_type, delalloc); if (ret == -EAGAIN) { btrfs_add_free_space(block_group, offset, num_bytes); goto loop; @@ -7995,7 +8012,7 @@ static int __btrfs_free_reserved_extent(struct btrfs_root *root, if (btrfs_test_opt(root->fs_info, DISCARD)) ret = btrfs_discard_extent(root, start, len, NULL); btrfs_add_free_space(cache, start, len); - btrfs_update_reserved_bytes(cache, len, RESERVE_FREE, delalloc); + btrfs_free_reserved_bytes(cache, len, delalloc); trace_btrfs_reserved_extent_free(root, start, len); } @@ -8223,8 +8240,8 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, if (!block_group) return -EINVAL; - ret = btrfs_update_reserved_bytes(block_group, ins->offset, - RESERVE_ALLOC_NO_ACCOUNT, 0); + ret = btrfs_add_reserved_bytes(block_group, ins->offset, + RESERVE_ALLOC_NO_ACCOUNT, 0); BUG_ON(ret); /* logic error */ ret = alloc_reserved_file_extent(trans, root, 0, root_objectid, 0, owner, offset, ins, 1); -- cgit v0.10.2 From 18513091af9483ba84328d42092bd4d42a3c958f Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Mon, 25 Jul 2016 15:51:40 +0800 Subject: btrfs: update btrfs_space_info's bytes_may_use timely This patch can fix some false ENOSPC errors, below test script can reproduce one false ENOSPC error: #!/bin/bash dd if=/dev/zero of=fs.img bs=$((1024*1024)) count=128 dev=$(losetup --show -f fs.img) mkfs.btrfs -f -M $dev mkdir /tmp/mntpoint mount $dev /tmp/mntpoint cd /tmp/mntpoint xfs_io -f -c "falloc 0 $((64*1024*1024))" testfile Above script will fail for ENOSPC reason, but indeed fs still has free space to satisfy this request. Please see call graph: btrfs_fallocate() |-> btrfs_alloc_data_chunk_ondemand() | bytes_may_use += 64M |-> btrfs_prealloc_file_range() |-> btrfs_reserve_extent() |-> btrfs_add_reserved_bytes() | alloc_type is RESERVE_ALLOC_NO_ACCOUNT, so it does not | change bytes_may_use, and bytes_reserved += 64M. Now | bytes_may_use + bytes_reserved == 128M, which is greater | than btrfs_space_info's total_bytes, false enospc occurs. | Note, the bytes_may_use decrease operation will be done in | end of btrfs_fallocate(), which is too late. Here is another simple case for buffered write: CPU 1 | CPU 2 | |-> cow_file_range() |-> __btrfs_buffered_write() |-> btrfs_reserve_extent() | | | | | | | | | ..... | |-> btrfs_check_data_free_space() | | | | |-> extent_clear_unlock_delalloc() | In CPU 1, btrfs_reserve_extent()->find_free_extent()-> btrfs_add_reserved_bytes() do not decrease bytes_may_use, the decrease operation will be delayed to be done in extent_clear_unlock_delalloc(). Assume in this case, btrfs_reserve_extent() reserved 128MB data, CPU2's btrfs_check_data_free_space() tries to reserve 100MB data space. If 100MB > data_sinfo->total_bytes - data_sinfo->bytes_used - data_sinfo->bytes_reserved - data_sinfo->bytes_pinned - data_sinfo->bytes_readonly - data_sinfo->bytes_may_use btrfs_check_data_free_space() will try to allcate new data chunk or call btrfs_start_delalloc_roots(), or commit current transaction in order to reserve some free space, obviously a lot of work. But indeed it's not necessary as long as decreasing bytes_may_use timely, we still have free space, decreasing 128M from bytes_may_use. To fix this issue, this patch chooses to update bytes_may_use for both data and metadata in btrfs_add_reserved_bytes(). For compress path, real extent length may not be equal to file content length, so introduce a ram_bytes argument for btrfs_reserve_extent(), find_free_extent() and btrfs_add_reserved_bytes(), it's becasue bytes_may_use is increased by file content length. Then compress path can update bytes_may_use correctly. Also now we can discard RESERVE_ALLOC_NO_ACCOUNT, RESERVE_ALLOC and RESERVE_FREE. As we know, usually EXTENT_DO_ACCOUNTING is used for error path. In run_delalloc_nocow(), for inode marked as NODATACOW or extent marked as PREALLOC, we also need to update bytes_may_use, but can not pass EXTENT_DO_ACCOUNTING, because it also clears metadata reservation, so here we introduce EXTENT_CLEAR_DATA_RESV flag to indicate btrfs_clear_bit_hook() to update btrfs_space_info's bytes_may_use. Meanwhile __btrfs_prealloc_file_range() will call btrfs_free_reserved_data_space() internally for both sucessful and failed path, btrfs_prealloc_file_range()'s callers does not need to call btrfs_free_reserved_data_space() any more. Signed-off-by: Wang Xiaoguang Reviewed-by: Josef Bacik Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index acc6850..09cdff0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2579,7 +2579,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 root_objectid, u64 owner, u64 offset, struct btrfs_key *ins); -int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, +int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, u64 min_alloc_size, u64 empty_size, u64 hint_byte, struct btrfs_key *ins, int is_data, int delalloc); int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index f1121db..133c93b 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -60,21 +60,6 @@ enum { CHUNK_ALLOC_FORCE = 2, }; -/* - * Control how reservations are dealt with. - * - * RESERVE_FREE - freeing a reservation. - * RESERVE_ALLOC - allocating space and we need to update bytes_may_use for - * ENOSPC accounting - * RESERVE_ALLOC_NO_ACCOUNT - allocating space and we should not update - * bytes_may_use as the ENOSPC accounting is done elsewhere - */ -enum { - RESERVE_FREE = 0, - RESERVE_ALLOC = 1, - RESERVE_ALLOC_NO_ACCOUNT = 2, -}; - static int update_block_group(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 num_bytes, int alloc); @@ -105,7 +90,7 @@ static int find_next_key(struct btrfs_path *path, int level, static void dump_space_info(struct btrfs_space_info *info, u64 bytes, int dump_block_groups); static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache, - u64 num_bytes, int reserve, int delalloc); + u64 ram_bytes, u64 num_bytes, int delalloc); static int btrfs_free_reserved_bytes(struct btrfs_block_group_cache *cache, u64 num_bytes, int delalloc); static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, @@ -3502,7 +3487,6 @@ again: dcs = BTRFS_DC_SETUP; else if (ret == -ENOSPC) set_bit(BTRFS_TRANS_CACHE_ENOSPC, &trans->transaction->flags); - btrfs_free_reserved_data_space(inode, 0, num_pages); out_put: iput(inode); @@ -6500,8 +6484,9 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg) /** * btrfs_add_reserved_bytes - update the block_group and space info counters * @cache: The cache we are manipulating + * @ram_bytes: The number of bytes of file content, and will be same to + * @num_bytes except for the compress path. * @num_bytes: The number of bytes in question - * @reserve: One of the reservation enums * @delalloc: The blocks are allocated for the delalloc write * * This is called by the allocator when it reserves space. Metadata @@ -6516,7 +6501,7 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg) * succeeds. */ static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache, - u64 num_bytes, int reserve, int delalloc) + u64 ram_bytes, u64 num_bytes, int delalloc) { struct btrfs_space_info *space_info = cache->space_info; int ret = 0; @@ -6528,13 +6513,11 @@ static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache, } else { cache->reserved += num_bytes; space_info->bytes_reserved += num_bytes; - if (reserve == RESERVE_ALLOC) { - trace_btrfs_space_reservation(cache->fs_info, - "space_info", space_info->flags, - num_bytes, 0); - space_info->bytes_may_use -= num_bytes; - } + trace_btrfs_space_reservation(cache->fs_info, + "space_info", space_info->flags, + ram_bytes, 0); + space_info->bytes_may_use -= ram_bytes; if (delalloc) cache->delalloc_bytes += num_bytes; } @@ -7433,9 +7416,9 @@ btrfs_release_block_group(struct btrfs_block_group_cache *cache, * the free space extent currently. */ static noinline int find_free_extent(struct btrfs_root *orig_root, - u64 num_bytes, u64 empty_size, - u64 hint_byte, struct btrfs_key *ins, - u64 flags, int delalloc) + u64 ram_bytes, u64 num_bytes, u64 empty_size, + u64 hint_byte, struct btrfs_key *ins, + u64 flags, int delalloc) { int ret = 0; struct btrfs_root *root = orig_root->fs_info->extent_root; @@ -7447,8 +7430,6 @@ static noinline int find_free_extent(struct btrfs_root *orig_root, struct btrfs_space_info *space_info; int loop = 0; int index = __get_raid_index(flags); - int alloc_type = (flags & BTRFS_BLOCK_GROUP_DATA) ? - RESERVE_ALLOC_NO_ACCOUNT : RESERVE_ALLOC; bool failed_cluster_refill = false; bool failed_alloc = false; bool use_cluster = true; @@ -7780,8 +7761,8 @@ checks: search_start - offset); BUG_ON(offset > search_start); - ret = btrfs_add_reserved_bytes(block_group, num_bytes, - alloc_type, delalloc); + ret = btrfs_add_reserved_bytes(block_group, ram_bytes, + num_bytes, delalloc); if (ret == -EAGAIN) { btrfs_add_free_space(block_group, offset, num_bytes); goto loop; @@ -7953,7 +7934,7 @@ again: up_read(&info->groups_sem); } -int btrfs_reserve_extent(struct btrfs_root *root, +int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, u64 min_alloc_size, u64 empty_size, u64 hint_byte, struct btrfs_key *ins, int is_data, int delalloc) @@ -7965,8 +7946,8 @@ int btrfs_reserve_extent(struct btrfs_root *root, flags = btrfs_get_alloc_profile(root, is_data); again: WARN_ON(num_bytes < root->sectorsize); - ret = find_free_extent(root, num_bytes, empty_size, hint_byte, ins, - flags, delalloc); + ret = find_free_extent(root, ram_bytes, num_bytes, empty_size, + hint_byte, ins, flags, delalloc); if (!ret && !is_data) { btrfs_dec_block_group_reservations(root->fs_info, ins->objectid); @@ -7975,6 +7956,7 @@ again: num_bytes = min(num_bytes >> 1, ins->offset); num_bytes = round_down(num_bytes, root->sectorsize); num_bytes = max(num_bytes, min_alloc_size); + ram_bytes = num_bytes; if (num_bytes == min_alloc_size) final_tried = true; goto again; @@ -8241,7 +8223,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, return -EINVAL; ret = btrfs_add_reserved_bytes(block_group, ins->offset, - RESERVE_ALLOC_NO_ACCOUNT, 0); + ins->offset, 0); BUG_ON(ret); /* logic error */ ret = alloc_reserved_file_extent(trans, root, 0, root_objectid, 0, owner, offset, ins, 1); @@ -8385,7 +8367,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, if (IS_ERR(block_rsv)) return ERR_CAST(block_rsv); - ret = btrfs_reserve_extent(root, blocksize, blocksize, + ret = btrfs_reserve_extent(root, blocksize, blocksize, blocksize, empty_size, hint, &ins, 0, 0); if (ret) goto out_unuse; diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index c0c1c4f..b52ca5d 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -20,6 +20,7 @@ #define EXTENT_DAMAGED (1U << 14) #define EXTENT_NORESERVE (1U << 15) #define EXTENT_QGROUP_RESERVED (1U << 16) +#define EXTENT_CLEAR_DATA_RESV (1U << 17) #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK) #define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 5842423..3391f2ad 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2675,6 +2675,7 @@ static long btrfs_fallocate(struct file *file, int mode, alloc_start = round_down(offset, blocksize); alloc_end = round_up(offset + len, blocksize); + cur_offset = alloc_start; /* Make sure we aren't being give some crap mode */ if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) @@ -2767,7 +2768,6 @@ static long btrfs_fallocate(struct file *file, int mode, /* First, check if we exceed the qgroup limit */ INIT_LIST_HEAD(&reserve_list); - cur_offset = alloc_start; while (1) { em = btrfs_get_extent(inode, NULL, 0, cur_offset, alloc_end - cur_offset, 0); @@ -2794,6 +2794,14 @@ static long btrfs_fallocate(struct file *file, int mode, last_byte - cur_offset); if (ret < 0) break; + } else { + /* + * Do not need to reserve unwritten extent for this + * range, free reserved data space first, otherwise + * it'll result in false ENOSPC error. + */ + btrfs_free_reserved_data_space(inode, cur_offset, + last_byte - cur_offset); } free_extent_map(em); cur_offset = last_byte; @@ -2811,6 +2819,9 @@ static long btrfs_fallocate(struct file *file, int mode, range->start, range->len, 1 << inode->i_blkbits, offset + len, &alloc_hint); + else + btrfs_free_reserved_data_space(inode, range->start, + range->len); list_del(&range->list); kfree(range); } @@ -2845,18 +2856,11 @@ out_unlock: unlock_extent_cached(&BTRFS_I(inode)->io_tree, alloc_start, locked_end, &cached_state, GFP_KERNEL); out: - /* - * As we waited the extent range, the data_rsv_map must be empty - * in the range, as written data range will be released from it. - * And for prealloacted extent, it will also be released when - * its metadata is written. - * So this is completely used as cleanup. - */ - btrfs_qgroup_free_data(inode, alloc_start, alloc_end - alloc_start); inode_unlock(inode); /* Let go of our reservation. */ - btrfs_free_reserved_data_space(inode, alloc_start, - alloc_end - alloc_start); + if (ret != 0) + btrfs_free_reserved_data_space(inode, alloc_start, + alloc_end - cur_offset); return ret; } diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index aa6faba..359ee86 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -495,10 +495,9 @@ again: ret = btrfs_prealloc_file_range_trans(inode, trans, 0, 0, prealloc, prealloc, prealloc, &alloc_hint); if (ret) { - btrfs_delalloc_release_space(inode, 0, prealloc); + btrfs_delalloc_release_metadata(inode, prealloc); goto out_put; } - btrfs_free_reserved_data_space(inode, 0, prealloc); ret = btrfs_write_out_ino_cache(root, trans, path, inode); out_put: diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 2963662..bcea200 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -566,6 +566,8 @@ cont: PAGE_SET_WRITEBACK | page_error_op | PAGE_END_WRITEBACK); + btrfs_free_reserved_data_space_noquota(inode, start, + end - start + 1); goto free_pages_out; } } @@ -742,7 +744,7 @@ retry: lock_extent(io_tree, async_extent->start, async_extent->start + async_extent->ram_size - 1); - ret = btrfs_reserve_extent(root, + ret = btrfs_reserve_extent(root, async_extent->ram_size, async_extent->compressed_size, async_extent->compressed_size, 0, alloc_hint, &ins, 1, 1); @@ -969,7 +971,8 @@ static noinline int cow_file_range(struct inode *inode, EXTENT_DEFRAG, PAGE_UNLOCK | PAGE_CLEAR_DIRTY | PAGE_SET_WRITEBACK | PAGE_END_WRITEBACK); - + btrfs_free_reserved_data_space_noquota(inode, start, + end - start + 1); *nr_written = *nr_written + (end - start + PAGE_SIZE) / PAGE_SIZE; *page_started = 1; @@ -989,7 +992,7 @@ static noinline int cow_file_range(struct inode *inode, unsigned long op; cur_alloc_size = disk_num_bytes; - ret = btrfs_reserve_extent(root, cur_alloc_size, + ret = btrfs_reserve_extent(root, cur_alloc_size, cur_alloc_size, root->sectorsize, 0, alloc_hint, &ins, 1, 1); if (ret < 0) @@ -1489,8 +1492,10 @@ out_check: extent_clear_unlock_delalloc(inode, cur_offset, cur_offset + num_bytes - 1, locked_page, EXTENT_LOCKED | - EXTENT_DELALLOC, PAGE_UNLOCK | - PAGE_SET_PRIVATE2); + EXTENT_DELALLOC | + EXTENT_CLEAR_DATA_RESV, + PAGE_UNLOCK | PAGE_SET_PRIVATE2); + if (!nolock && nocow) btrfs_end_write_no_snapshoting(root); cur_offset = extent_end; @@ -1807,7 +1812,9 @@ static void btrfs_clear_bit_hook(struct inode *inode, return; if (root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID - && do_list && !(state->state & EXTENT_NORESERVE)) + && do_list && !(state->state & EXTENT_NORESERVE) + && (*bits & (EXTENT_DO_ACCOUNTING | + EXTENT_CLEAR_DATA_RESV))) btrfs_free_reserved_data_space_noquota(inode, state->start, len); @@ -7252,7 +7259,7 @@ static struct extent_map *btrfs_new_extent_direct(struct inode *inode, int ret; alloc_hint = get_extent_allocation_hint(inode, start, len); - ret = btrfs_reserve_extent(root, len, root->sectorsize, 0, + ret = btrfs_reserve_extent(root, len, len, root->sectorsize, 0, alloc_hint, &ins, 1, 1); if (ret) return ERR_PTR(ret); @@ -7752,6 +7759,13 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, ret = PTR_ERR(em2); goto unlock_err; } + /* + * For inode marked NODATACOW or extent marked PREALLOC, + * use the existing or preallocated extent, so does not + * need to adjust btrfs_space_info's bytes_may_use. + */ + btrfs_free_reserved_data_space_noquota(inode, + start, len); goto unlock; } } @@ -7786,7 +7800,6 @@ unlock: i_size_write(inode, start + len); adjust_dio_outstanding_extents(inode, dio_data, len); - btrfs_free_reserved_data_space(inode, start, len); WARN_ON(dio_data->reserve < len); dio_data->reserve -= len; dio_data->unsubmitted_oe_range_end = start + len; @@ -10306,6 +10319,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, u64 last_alloc = (u64)-1; int ret = 0; bool own_trans = true; + u64 end = start + num_bytes - 1; if (trans) own_trans = false; @@ -10327,8 +10341,8 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, * sized chunks. */ cur_bytes = min(cur_bytes, last_alloc); - ret = btrfs_reserve_extent(root, cur_bytes, min_size, 0, - *alloc_hint, &ins, 1, 0); + ret = btrfs_reserve_extent(root, cur_bytes, cur_bytes, + min_size, 0, *alloc_hint, &ins, 1, 0); if (ret) { if (own_trans) btrfs_end_transaction(trans, root); @@ -10414,6 +10428,9 @@ next: if (own_trans) btrfs_end_transaction(trans, root); } + if (cur_offset < end) + btrfs_free_reserved_data_space(inode, cur_offset, + end - cur_offset + 1); return ret; } diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 71b4b70..8a2c2a0 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3040,6 +3040,7 @@ int prealloc_file_extent_cluster(struct inode *inode, int ret = 0; u64 prealloc_start = cluster->start - offset; u64 prealloc_end = cluster->end - offset; + u64 cur_offset; BUG_ON(cluster->start != cluster->boundary[0]); inode_lock(inode); @@ -3049,6 +3050,7 @@ int prealloc_file_extent_cluster(struct inode *inode, if (ret) goto out; + cur_offset = prealloc_start; while (nr < cluster->nr) { start = cluster->boundary[nr] - offset; if (nr + 1 < cluster->nr) @@ -3058,16 +3060,21 @@ int prealloc_file_extent_cluster(struct inode *inode, lock_extent(&BTRFS_I(inode)->io_tree, start, end); num_bytes = end + 1 - start; + if (cur_offset < start) + btrfs_free_reserved_data_space(inode, cur_offset, + start - cur_offset); ret = btrfs_prealloc_file_range(inode, 0, start, num_bytes, num_bytes, end + 1, &alloc_hint); + cur_offset = end + 1; unlock_extent(&BTRFS_I(inode)->io_tree, start, end); if (ret) break; nr++; } - btrfs_free_reserved_data_space(inode, prealloc_start, - prealloc_end + 1 - prealloc_start); + if (cur_offset < prealloc_end) + btrfs_free_reserved_data_space(inode, cur_offset, + prealloc_end + 1 - cur_offset); out: inode_unlock(inode); return ret; -- cgit v0.10.2 From 9e7cc91a6d18a4973c6d2cc104871439c9e94f3d Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Mon, 1 Aug 2016 13:28:08 +0800 Subject: btrfs: fix fsfreeze hang caused by delayed iputs deal When running fstests generic/068, sometimes we got below deadlock: xfs_io D ffff8800331dbb20 0 6697 6693 0x00000080 ffff8800331dbb20 ffff88007acfc140 ffff880034d895c0 ffff8800331dc000 ffff880032d243e8 fffffffeffffffff ffff880032d24400 0000000000000001 ffff8800331dbb38 ffffffff816a9045 ffff880034d895c0 ffff8800331dbba8 Call Trace: [] schedule+0x35/0x80 [] rwsem_down_read_failed+0xf2/0x140 [] ? __filemap_fdatawrite_range+0xd1/0x100 [] call_rwsem_down_read_failed+0x18/0x30 [] ? btrfs_alloc_block_rsv+0x2c/0xb0 [btrfs] [] percpu_down_read+0x35/0x50 [] __sb_start_write+0x2c/0x40 [] start_transaction+0x2a5/0x4d0 [btrfs] [] btrfs_join_transaction+0x17/0x20 [btrfs] [] btrfs_evict_inode+0x3c4/0x5d0 [btrfs] [] evict+0xba/0x1a0 [] iput+0x196/0x200 [] btrfs_run_delayed_iputs+0x70/0xc0 [btrfs] [] btrfs_commit_transaction+0x928/0xa80 [btrfs] [] btrfs_freeze+0x30/0x40 [btrfs] [] freeze_super+0xf0/0x190 [] do_vfs_ioctl+0x4a5/0x5c0 [] ? do_audit_syscall_entry+0x66/0x70 [] ? syscall_trace_enter_phase1+0x11f/0x140 [] SyS_ioctl+0x79/0x90 [] do_syscall_64+0x62/0x110 [] entry_SYSCALL64_slow_path+0x25/0x25 >From this warning, freeze_super() already holds SB_FREEZE_FS, but btrfs_freeze() will call btrfs_commit_transaction() again, if btrfs_commit_transaction() finds that it has delayed iputs to handle, it'll start_transaction(), which will try to get SB_FREEZE_FS lock again, then deadlock occurs. The root cause is that in btrfs, sync_filesystem(sb) does not make sure all metadata is updated. There still maybe some codes adding delayed iputs, see below sample race window: CPU1 | CPU2 |-> freeze_super() | |-> sync_filesystem(sb); | | |-> cleaner_kthread() | | |-> btrfs_delete_unused_bgs() | | |-> btrfs_remove_chunk() | | |-> btrfs_remove_block_group() | | |-> btrfs_add_delayed_iput() | | |-> sb->s_writers.frozen = SB_FREEZE_FS; | |-> sb_wait_write(sb, SB_FREEZE_FS); | | acquire SB_FREEZE_FS lock. | | | |-> btrfs_freeze() | |-> btrfs_commit_transaction() | |-> btrfs_run_delayed_iputs() | | will handle delayed iputs, | | that means start_transaction() | | will be called, which will try | | to get SB_FREEZE_FS lock. | To fix this issue, introduce a "int fs_frozen" to record internally whether fs has been frozen. If fs has been frozen, we can not handle delayed iputs. Signed-off-by: Wang Xiaoguang Reviewed-by: David Sterba [ add comment to btrfs_freeze ] Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 09cdff0..ec4154f 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1080,6 +1080,8 @@ struct btrfs_fs_info { struct list_head pinned_chunks; int creating_free_space_tree; + /* Used to record internally whether fs has been frozen */ + int fs_frozen; }; struct btrfs_subvolume_writers { diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 7857f64..1706222 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2631,6 +2631,7 @@ int open_ctree(struct super_block *sb, atomic_set(&fs_info->qgroup_op_seq, 0); atomic_set(&fs_info->reada_works_cnt, 0); atomic64_set(&fs_info->tree_mod_seq, 0); + fs_info->fs_frozen = 0; fs_info->sb = sb; fs_info->max_inline = BTRFS_DEFAULT_MAX_INLINE; fs_info->metadata_ratio = 0; diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 864ce33..4071fe2 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2241,6 +2241,13 @@ static int btrfs_freeze(struct super_block *sb) struct btrfs_trans_handle *trans; struct btrfs_root *root = btrfs_sb(sb)->tree_root; + root->fs_info->fs_frozen = 1; + /* + * We don't need a barrier here, we'll wait for any transaction that + * could be in progress on other threads (and do delayed iputs that + * we want to avoid on a frozen filesystem), or do the commit + * ourselves. + */ trans = btrfs_attach_transaction_barrier(root); if (IS_ERR(trans)) { /* no transaction, don't bother */ @@ -2251,6 +2258,14 @@ static int btrfs_freeze(struct super_block *sb) return btrfs_commit_transaction(trans, root); } +static int btrfs_unfreeze(struct super_block *sb) +{ + struct btrfs_root *root = btrfs_sb(sb)->tree_root; + + root->fs_info->fs_frozen = 0; + return 0; +} + static int btrfs_show_devname(struct seq_file *m, struct dentry *root) { struct btrfs_fs_info *fs_info = btrfs_sb(root->d_sb); @@ -2299,6 +2314,7 @@ static const struct super_operations btrfs_super_ops = { .statfs = btrfs_statfs, .remount_fs = btrfs_remount, .freeze_fs = btrfs_freeze, + .unfreeze_fs = btrfs_unfreeze, }; static const struct file_operations btrfs_ctl_fops = { diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 9cca0a7..95d4191 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -2278,8 +2278,13 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, kmem_cache_free(btrfs_trans_handle_cachep, trans); + /* + * If fs has been frozen, we can not handle delayed iputs, otherwise + * it'll result in deadlock about SB_FREEZE_FS. + */ if (current != root->fs_info->transaction_kthread && - current != root->fs_info->cleaner_kthread) + current != root->fs_info->cleaner_kthread && + !root->fs_info->fs_frozen) btrfs_run_delayed_iputs(root); return ret; -- cgit v0.10.2 From 28b737f6ede3661fe610937706c4a6f50e9ab769 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Fri, 29 Jul 2016 11:09:50 -0700 Subject: Btrfs: clarify do_chunk_alloc()'s return value Function start_transaction() can return ERR_PTR(1) when flush is BTRFS_RESERVE_FLUSH_LIMIT, so the call graph is start_transaction (return ERR_PTR(1)) -> btrfs_block_rsv_add (return 1) -> reserve_metadata_bytes (return 1) -> flush_space (return 1) -> do_chunk_alloc (return 1) With BTRFS_RESERVE_FLUSH_LIMIT, if flush_space is already on the flush_state of ALLOC_CHUNK and it successfully allocates a new chunk, then instead of trying to reserve space again, reserve_metadata_bytes returns 1 immediately. Eventually the callers who call start_transaction() usually just do the IS_ERR() check which ERR_PTR(1) can pass, then it'll get a panic when dereferencing a pointer which is ERR_PTR(1). The following patch fixes the above problem. "btrfs: flush_space: treat return value of do_chunk_alloc properly" https://patchwork.kernel.org/patch/7778651/ This add comments to clarify do_chunk_alloc()'s return value. Signed-off-by: Liu Bo Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 133c93b..d5d3cfb 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4457,6 +4457,15 @@ void check_system_chunk(struct btrfs_trans_handle *trans, } } +/* + * If force is CHUNK_ALLOC_FORCE: + * - return 1 if it successfully allocates a chunk, + * - return errors including -ENOSPC otherwise. + * If force is NOT CHUNK_ALLOC_FORCE: + * - return 0 if it doesn't need to allocate a new chunk, + * - return 1 if it successfully allocates a chunk, + * - return errors including -ENOSPC otherwise. + */ static int do_chunk_alloc(struct btrfs_trans_handle *trans, struct btrfs_root *extent_root, u64 flags, int force) { -- cgit v0.10.2 From 142388194191a3edc9ba01cfcfd8b691e0971fb2 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Fri, 22 Jul 2016 06:04:53 +0800 Subject: btrfs: do not background blkdev_put() At the end of unmount/dev-delete, if the device exclusive open is not actually closed, then there might be a race with another program in the userland who is trying to open the device in exclusive mode and it may fail for eg: unmount /btrfs; fsck /dev/x btrfs dev del /dev/x /btrfs; fsck /dev/x so here background blkdev_put() is not a choice Signed-off-by: Anand Jain Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index e217035..9a6f0dc 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -834,10 +834,6 @@ static void __free_device(struct work_struct *work) struct btrfs_device *device; device = container_of(work, struct btrfs_device, rcu_work); - - if (device->bdev) - blkdev_put(device->bdev, device->mode); - rcu_string_free(device->name); kfree(device); } @@ -852,6 +848,17 @@ static void free_device(struct rcu_head *head) schedule_work(&device->rcu_work); } +static void btrfs_close_bdev(struct btrfs_device *device) +{ + if (device->bdev && device->writeable) { + sync_blockdev(device->bdev); + invalidate_bdev(device->bdev); + } + + if (device->bdev) + blkdev_put(device->bdev, device->mode); +} + static void btrfs_close_one_device(struct btrfs_device *device) { struct btrfs_fs_devices *fs_devices = device->fs_devices; @@ -870,10 +877,7 @@ static void btrfs_close_one_device(struct btrfs_device *device) if (device->missing) fs_devices->missing_devices--; - if (device->bdev && device->writeable) { - sync_blockdev(device->bdev); - invalidate_bdev(device->bdev); - } + btrfs_close_bdev(device); new_device = btrfs_alloc_device(NULL, &device->devid, device->uuid); @@ -1932,6 +1936,8 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) btrfs_sysfs_rm_device_link(root->fs_info->fs_devices, device); } + btrfs_close_bdev(device); + call_rcu(&device->rcu, free_device); num_devices = btrfs_super_num_devices(root->fs_info->super_copy) - 1; @@ -2025,6 +2031,9 @@ void btrfs_rm_dev_replace_free_srcdev(struct btrfs_fs_info *fs_info, /* zero out the old super if it is writable */ btrfs_scratch_superblocks(srcdev->bdev, srcdev->name->str); } + + btrfs_close_bdev(srcdev); + call_rcu(&srcdev->rcu, free_device); /* @@ -2080,6 +2089,8 @@ void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, * the device_list_mutex lock. */ btrfs_scratch_superblocks(tgtdev->bdev, tgtdev->name->str); + + btrfs_close_bdev(tgtdev); call_rcu(&tgtdev->rcu, free_device); } -- cgit v0.10.2 From 187ee58c62c1d0d238d3dc4835869d33e1869906 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 18 Aug 2016 15:30:06 -0400 Subject: Btrfs: fix em leak in find_first_block_group We need to call free_extent_map() on the em we look up. Signed-off-by: Josef Bacik Reviewed-by: Omar Sandoval Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index d5d3cfb..60d4ae7 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -9887,6 +9887,7 @@ static int find_first_block_group(struct btrfs_root *root, } else { ret = 0; } + free_extent_map(em); goto out; } path->slots[0]++; -- cgit v0.10.2 From 35bbb97fc898aeb874cb7c8b746f091caa359994 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Wed, 17 Aug 2016 21:58:33 -0400 Subject: btrfs: don't create or leak aliased root while cleaning up orphans commit 909c3a22da3 (Btrfs: fix loading of orphan roots leading to BUG_ON) avoids the BUG_ON but can add an aliased root to the dead_roots list or leak the root. Since we've already been loading roots into the radix tree, we should use it before looking the root up on disk. Cc: # 4.5 Signed-off-by: Jeff Mahoney Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 1706222..edda471 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1624,8 +1624,8 @@ fail: return ret; } -static struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info, - u64 root_id) +struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info, + u64 root_id) { struct btrfs_root *root; diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index c9d42c9..e0efe45 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -68,6 +68,8 @@ struct extent_buffer *btrfs_find_tree_block(struct btrfs_fs_info *fs_info, struct btrfs_root *btrfs_read_fs_root(struct btrfs_root *tree_root, struct btrfs_key *location); int btrfs_init_fs_root(struct btrfs_root *root); +struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info, + u64 root_id); int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root); void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info); diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c index 7fd7e18..0912960 100644 --- a/fs/btrfs/root-tree.c +++ b/fs/btrfs/root-tree.c @@ -272,6 +272,23 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root) root_key.objectid = key.offset; key.offset++; + /* + * The root might have been inserted already, as before we look + * for orphan roots, log replay might have happened, which + * triggers a transaction commit and qgroup accounting, which + * in turn reads and inserts fs roots while doing backref + * walking. + */ + root = btrfs_lookup_fs_root(tree_root->fs_info, + root_key.objectid); + if (root) { + WARN_ON(!test_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, + &root->state)); + if (btrfs_root_refs(&root->root_item) == 0) + btrfs_add_dead_root(root); + continue; + } + root = btrfs_read_fs_root(tree_root, &root_key); err = PTR_ERR_OR_ZERO(root); if (err && err != -ENOENT) { @@ -310,16 +327,8 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root) set_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state); err = btrfs_insert_fs_root(root->fs_info, root); - /* - * The root might have been inserted already, as before we look - * for orphan roots, log replay might have happened, which - * triggers a transaction commit and qgroup accounting, which - * in turn reads and inserts fs roots while doing backref - * walking. - */ - if (err == -EEXIST) - err = 0; if (err) { + BUG_ON(err == -EEXIST); btrfs_free_fs_root(root); break; } -- cgit v0.10.2 From 053ab70f0604224c7893b43f9d9d5efa283580d6 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 23 Aug 2016 17:37:45 -0700 Subject: Btrfs: check btree node's nritems When btree node (level = 1) has nritems which equals to zero, we can end up with panic due to insert_ptr()'s BUG_ON(slot > nritems); where slot is 1 and nritems is 0, as copy_for_split() calls insert_ptr(.., path->slots[1] + 1, ...); A invalid value results in the whole mess, this adds the check for btree's node nritems so that we stop reading block when when something is wrong. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index edda471..474209f 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -613,6 +613,19 @@ static noinline int check_leaf(struct btrfs_root *root, return 0; } +static int check_node(struct btrfs_root *root, struct extent_buffer *node) +{ + unsigned long nr = btrfs_header_nritems(node); + + if (nr == 0 || nr > BTRFS_NODEPTRS_PER_BLOCK(root)) { + btrfs_crit(root->fs_info, + "corrupt node: block %llu root %llu nritems %lu", + node->start, root->objectid, nr); + return -EIO; + } + return 0; +} + static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio, u64 phy_offset, struct page *page, u64 start, u64 end, int mirror) @@ -683,6 +696,9 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio, ret = -EIO; } + if (found_level > 0 && check_node(root, eb)) + ret = -EIO; + if (!ret) set_extent_buffer_uptodate(eb); err: -- cgit v0.10.2 From 1ba98d086fe3a14d6a31f2f66dbab70c45d00f63 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 23 Aug 2016 15:22:58 -0700 Subject: Btrfs: detect corruption when non-root leaf has zero item Right now we treat leaf which has zero item as a valid one because we could have an empty tree, that is, a root that is also a leaf without any item, however, in the same case but when the leaf is not a root, we can end up with hitting the BUG_ON(1) in btrfs_extend_item() called by setup_inline_extent_backref(). This makes us check the situation as a corruption if leaf is not its own root. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 474209f..70e76ad 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -560,8 +560,29 @@ static noinline int check_leaf(struct btrfs_root *root, u32 nritems = btrfs_header_nritems(leaf); int slot; - if (nritems == 0) + if (nritems == 0) { + struct btrfs_root *check_root; + + key.objectid = btrfs_header_owner(leaf); + key.type = BTRFS_ROOT_ITEM_KEY; + key.offset = (u64)-1; + + check_root = btrfs_get_fs_root(root->fs_info, &key, false); + /* + * The only reason we also check NULL here is that during + * open_ctree() some roots has not yet been set up. + */ + if (!IS_ERR_OR_NULL(check_root)) { + /* if leaf is the root, then it's fine */ + if (leaf->start != + btrfs_root_bytenr(&check_root->root_item)) { + CORRUPT("non-root leaf's nritems is 0", + leaf, root, 0); + return -EIO; + } + } return 0; + } /* Check the 0 item */ if (btrfs_item_offset_nr(leaf, 0) + btrfs_item_size_nr(leaf, 0) != -- cgit v0.10.2 From 28a235931b56d4e7bdd51f6733daf95f2b269da8 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Tue, 23 Aug 2016 21:13:51 +0100 Subject: Btrfs: fix lockdep warning on deadlock against an inode's log mutex Commit 44f714dae50a ("Btrfs: improve performance on fsync against new inode after rename/unlink"), which landed in 4.8-rc2, introduced a possibility for a deadlock due to double locking of an inode's log mutex by the same task, which lockdep reports with: [23045.433975] ============================================= [23045.434748] [ INFO: possible recursive locking detected ] [23045.435426] 4.7.0-rc6-btrfs-next-34+ #1 Not tainted [23045.436044] --------------------------------------------- [23045.436044] xfs_io/3688 is trying to acquire lock: [23045.436044] (&ei->log_mutex){+.+...}, at: [] btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] but task is already holding lock: [23045.436044] (&ei->log_mutex){+.+...}, at: [] btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] other info that might help us debug this: [23045.436044] Possible unsafe locking scenario: [23045.436044] CPU0 [23045.436044] ---- [23045.436044] lock(&ei->log_mutex); [23045.436044] lock(&ei->log_mutex); [23045.436044] *** DEADLOCK *** [23045.436044] May be due to missing lock nesting notation [23045.436044] 3 locks held by xfs_io/3688: [23045.436044] #0: (&sb->s_type->i_mutex_key#15){+.+...}, at: [] btrfs_sync_file+0x14e/0x425 [btrfs] [23045.436044] #1: (sb_internal#2){.+.+.+}, at: [] __sb_start_write+0x5f/0xb0 [23045.436044] #2: (&ei->log_mutex){+.+...}, at: [] btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] stack backtrace: [23045.436044] CPU: 4 PID: 3688 Comm: xfs_io Not tainted 4.7.0-rc6-btrfs-next-34+ #1 [23045.436044] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014 [23045.436044] 0000000000000000 ffff88022f5f7860 ffffffff8127074d ffffffff82a54b70 [23045.436044] ffffffff82a54b70 ffff88022f5f7920 ffffffff81092897 ffff880228015d68 [23045.436044] 0000000000000000 ffffffff82a54b70 ffffffff829c3f00 ffff880228015d68 [23045.436044] Call Trace: [23045.436044] [] dump_stack+0x67/0x90 [23045.436044] [] __lock_acquire+0xcbb/0xe4e [23045.436044] [] ? mark_lock+0x24/0x201 [23045.436044] [] ? mark_held_locks+0x5e/0x74 [23045.436044] [] lock_acquire+0x12f/0x1c3 [23045.436044] [] ? lock_acquire+0x12f/0x1c3 [23045.436044] [] ? btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] [] ? btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] [] mutex_lock_nested+0x77/0x3a7 [23045.436044] [] ? btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] [] ? btrfs_release_delayed_node+0xb/0xd [btrfs] [23045.436044] [] btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] [] ? btrfs_log_inode+0x13a/0xc95 [btrfs] [23045.436044] [] ? vprintk_emit+0x453/0x465 [23045.436044] [] btrfs_log_inode+0x66e/0xc95 [btrfs] [23045.436044] [] log_new_dir_dentries+0x26c/0x359 [btrfs] [23045.436044] [] btrfs_log_inode_parent+0x4a6/0x628 [btrfs] [23045.436044] [] btrfs_log_dentry_safe+0x5a/0x75 [btrfs] [23045.436044] [] btrfs_sync_file+0x304/0x425 [btrfs] [23045.436044] [] vfs_fsync_range+0x8c/0x9e [23045.436044] [] vfs_fsync+0x1c/0x1e [23045.436044] [] do_fsync+0x31/0x4a [23045.436044] [] SyS_fsync+0x10/0x14 [23045.436044] [] entry_SYSCALL_64_fastpath+0x18/0xa8 [23045.436044] [] ? trace_hardirqs_off_caller+0x3f/0xaa An example reproducer for this is: $ mkfs.btrfs -f /dev/sdb $ mount /dev/sdb /mnt $ mkdir /mnt/dir $ touch /mnt/dir/foo $ sync $ mv /mnt/dir/foo /mnt/dir/bar $ touch /mnt/dir/foo $ xfs_io -c "fsync" /mnt/dir/bar This is because while logging the inode of file bar we end up logging its parent directory (since its inode has an unlink_trans field matching the current transaction id due to the rename operation), which in turn logs the inodes for all its new dentries, so that the new inode for the new file named foo gets logged which in turn triggered another logging attempt for the inode we are fsync'ing, since that inode had an old name that corresponds to the name of the new inode. So fix this by ensuring that when logging the inode for a new dentry that has a name matching an old name of some other inode, we don't log again the original inode that we are fsync'ing. Fixes: 44f714dae50a ("Btrfs: improve performance on fsync against new inode after rename/unlink") Signed-off-by: Filipe Manana Signed-off-by: David Sterba Signed-off-by: Chris Mason diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 3391f2ad..fea31a4 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2070,7 +2070,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) } trans->sync = true; - btrfs_init_log_ctx(&ctx); + btrfs_init_log_ctx(&ctx, inode); ret = btrfs_log_dentry_safe(trans, root, dentry, start, end, &ctx); if (ret < 0) { diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index ffe92da..e935035 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2823,7 +2823,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans, */ mutex_unlock(&root->log_mutex); - btrfs_init_log_ctx(&root_log_ctx); + btrfs_init_log_ctx(&root_log_ctx, NULL); mutex_lock(&log_root_tree->log_mutex); atomic_inc(&log_root_tree->log_batch); @@ -4757,7 +4757,8 @@ again: if (ret < 0) { err = ret; goto out_unlock; - } else if (ret > 0) { + } else if (ret > 0 && ctx && + other_ino != btrfs_ino(ctx->inode)) { struct btrfs_key inode_key; struct inode *other_inode; diff --git a/fs/btrfs/tree-log.h b/fs/btrfs/tree-log.h index a9f1b75..ab858e3 100644 --- a/fs/btrfs/tree-log.h +++ b/fs/btrfs/tree-log.h @@ -30,15 +30,18 @@ struct btrfs_log_ctx { int log_transid; int io_err; bool log_new_dentries; + struct inode *inode; struct list_head list; }; -static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx) +static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, + struct inode *inode) { ctx->log_ret = 0; ctx->log_transid = 0; ctx->io_err = 0; ctx->log_new_dentries = false; + ctx->inode = inode; INIT_LIST_HEAD(&ctx->list); } -- cgit v0.10.2 From 93fac10b99d78eb2c50a739cba2e590c7332d539 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Mon, 22 Aug 2016 21:58:16 +0800 Subject: netfilter: nfnetlink: use list_for_each_entry_safe to delete all objects cttimeout and acct objects are deleted from the list while traversing it, so use list_for_each_entry is unsafe here. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c index 70eb2f6a..d44d89b 100644 --- a/net/netfilter/nfnetlink_acct.c +++ b/net/netfilter/nfnetlink_acct.c @@ -343,12 +343,12 @@ static int nfnl_acct_del(struct net *net, struct sock *nfnl, struct sk_buff *skb, const struct nlmsghdr *nlh, const struct nlattr * const tb[]) { - char *acct_name; - struct nf_acct *cur; + struct nf_acct *cur, *tmp; int ret = -ENOENT; + char *acct_name; if (!tb[NFACCT_NAME]) { - list_for_each_entry(cur, &net->nfnl_acct_list, head) + list_for_each_entry_safe(cur, tmp, &net->nfnl_acct_list, head) nfnl_acct_try_del(cur); return 0; diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c index 68216cd..f74fee1 100644 --- a/net/netfilter/nfnetlink_cttimeout.c +++ b/net/netfilter/nfnetlink_cttimeout.c @@ -350,12 +350,13 @@ static int cttimeout_del_timeout(struct net *net, struct sock *ctnl, const struct nlmsghdr *nlh, const struct nlattr * const cda[]) { - struct ctnl_timeout *cur; + struct ctnl_timeout *cur, *tmp; int ret = -ENOENT; char *name; if (!cda[CTA_TIMEOUT_NAME]) { - list_for_each_entry(cur, &net->nfct_timeout_list, head) + list_for_each_entry_safe(cur, tmp, &net->nfct_timeout_list, + head) ctnl_timeout_try_del(net, cur); return 0; -- cgit v0.10.2 From 23aaba5ad55547db62bada5066c8fb6412d5b1c2 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Mon, 22 Aug 2016 21:58:17 +0800 Subject: netfilter: cttimeout: put back l4proto when replacing timeout policy We forget to call nf_ct_l4proto_put when replacing the existing timeout policy. Acctually, there's no need to get ct l4proto before doing replace, so we can move it to a later position. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c index f74fee1..6844c7a 100644 --- a/net/netfilter/nfnetlink_cttimeout.c +++ b/net/netfilter/nfnetlink_cttimeout.c @@ -98,31 +98,28 @@ static int cttimeout_new_timeout(struct net *net, struct sock *ctnl, break; } - l4proto = nf_ct_l4proto_find_get(l3num, l4num); - - /* This protocol is not supportted, skip. */ - if (l4proto->l4proto != l4num) { - ret = -EOPNOTSUPP; - goto err_proto_put; - } - if (matching) { if (nlh->nlmsg_flags & NLM_F_REPLACE) { /* You cannot replace one timeout policy by another of * different kind, sorry. */ if (matching->l3num != l3num || - matching->l4proto->l4proto != l4num) { - ret = -EINVAL; - goto err_proto_put; - } - - ret = ctnl_timeout_parse_policy(&matching->data, - l4proto, net, - cda[CTA_TIMEOUT_DATA]); - return ret; + matching->l4proto->l4proto != l4num) + return -EINVAL; + + return ctnl_timeout_parse_policy(&matching->data, + matching->l4proto, net, + cda[CTA_TIMEOUT_DATA]); } - ret = -EBUSY; + + return -EBUSY; + } + + l4proto = nf_ct_l4proto_find_get(l3num, l4num); + + /* This protocol is not supportted, skip. */ + if (l4proto->l4proto != l4num) { + ret = -EOPNOTSUPP; goto err_proto_put; } -- cgit v0.10.2 From 533e33009897c7dd1b0424c0d4b3331b222d5681 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Mon, 22 Aug 2016 21:58:18 +0800 Subject: netfilter: cttimeout: unlink timeout objs in the unconfirmed ct lists KASAN reported this bug: BUG: KASAN: use-after-free in icmp_packet+0x25/0x50 [nf_conntrack_ipv4] at addr ffff880002db08c8 Read of size 4 by task lt-nf-queue/19041 Call Trace: [] dump_stack+0x63/0x88 [] kasan_report_error+0x528/0x560 [] kasan_report+0x58/0x60 [] ? icmp_packet+0x25/0x50 [nf_conntrack_ipv4] [] __asan_load4+0x61/0x80 [] icmp_packet+0x25/0x50 [nf_conntrack_ipv4] [] nf_conntrack_in+0x550/0x980 [nf_conntrack] [] ? __nf_conntrack_confirm+0xb10/0xb10 [nf_conntrack] [ ... ] The main reason is that we missed to unlink the timeout objects in the unconfirmed ct lists, so we will access the timeout objects that have already been freed. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c index 6844c7a..139e086 100644 --- a/net/netfilter/nfnetlink_cttimeout.c +++ b/net/netfilter/nfnetlink_cttimeout.c @@ -302,7 +302,16 @@ static void ctnl_untimeout(struct net *net, struct ctnl_timeout *timeout) const struct hlist_nulls_node *nn; unsigned int last_hsize; spinlock_t *lock; - int i; + int i, cpu; + + for_each_possible_cpu(cpu) { + struct ct_pcpu *pcpu = per_cpu_ptr(net->ct.pcpu_lists, cpu); + + spin_lock_bh(&pcpu->lock); + hlist_nulls_for_each_entry(h, nn, &pcpu->unconfirmed, hnnode) + untimeout(h, timeout); + spin_unlock_bh(&pcpu->lock); + } local_bh_disable(); restart: -- cgit v0.10.2 From 960fa72f67f1be6891d63a5518860d1ae4e14b88 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Mon, 22 Aug 2016 22:57:56 +0800 Subject: netfilter: nft_meta: improve the validity check of pkttype set expr "meta pkttype set" is only supported on prerouting chain with bridge family and ingress chain with netdev family. But the validate check is incomplete, and the user can add the nft rules on input chain with bridge family, for example: # nft add table bridge filter # nft add chain bridge filter input {type filter hook input \ priority 0 \;} # nft add chain bridge filter test # nft add rule bridge filter test meta pkttype set unicast # nft add rule bridge filter input jump test This patch fixes the problem. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/include/net/netfilter/nft_meta.h b/include/net/netfilter/nft_meta.h index d27588c..1139cde 100644 --- a/include/net/netfilter/nft_meta.h +++ b/include/net/netfilter/nft_meta.h @@ -36,4 +36,8 @@ void nft_meta_set_eval(const struct nft_expr *expr, void nft_meta_set_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr); +int nft_meta_set_validate(const struct nft_ctx *ctx, + const struct nft_expr *expr, + const struct nft_data **data); + #endif diff --git a/net/bridge/netfilter/nft_meta_bridge.c b/net/bridge/netfilter/nft_meta_bridge.c index 4b901d9..ad47a92 100644 --- a/net/bridge/netfilter/nft_meta_bridge.c +++ b/net/bridge/netfilter/nft_meta_bridge.c @@ -86,6 +86,7 @@ static const struct nft_expr_ops nft_meta_bridge_set_ops = { .init = nft_meta_set_init, .destroy = nft_meta_set_destroy, .dump = nft_meta_set_dump, + .validate = nft_meta_set_validate, }; static const struct nft_expr_ops * diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c index 2863f34..8a6bc76 100644 --- a/net/netfilter/nft_meta.c +++ b/net/netfilter/nft_meta.c @@ -291,10 +291,16 @@ int nft_meta_get_init(const struct nft_ctx *ctx, } EXPORT_SYMBOL_GPL(nft_meta_get_init); -static int nft_meta_set_init_pkttype(const struct nft_ctx *ctx) +int nft_meta_set_validate(const struct nft_ctx *ctx, + const struct nft_expr *expr, + const struct nft_data **data) { + struct nft_meta *priv = nft_expr_priv(expr); unsigned int hooks; + if (priv->key != NFT_META_PKTTYPE) + return 0; + switch (ctx->afi->family) { case NFPROTO_BRIDGE: hooks = 1 << NF_BR_PRE_ROUTING; @@ -308,6 +314,7 @@ static int nft_meta_set_init_pkttype(const struct nft_ctx *ctx) return nft_chain_validate_hooks(ctx->chain, hooks); } +EXPORT_SYMBOL_GPL(nft_meta_set_validate); int nft_meta_set_init(const struct nft_ctx *ctx, const struct nft_expr *expr, @@ -327,15 +334,16 @@ int nft_meta_set_init(const struct nft_ctx *ctx, len = sizeof(u8); break; case NFT_META_PKTTYPE: - err = nft_meta_set_init_pkttype(ctx); - if (err) - return err; len = sizeof(u8); break; default: return -EOPNOTSUPP; } + err = nft_meta_set_validate(ctx, expr, NULL); + if (err < 0) + return err; + priv->sreg = nft_parse_register(tb[NFTA_META_SREG]); err = nft_validate_register_load(priv->sreg, len); if (err < 0) @@ -407,6 +415,7 @@ static const struct nft_expr_ops nft_meta_set_ops = { .init = nft_meta_set_init, .destroy = nft_meta_set_destroy, .dump = nft_meta_set_dump, + .validate = nft_meta_set_validate, }; static const struct nft_expr_ops * -- cgit v0.10.2 From 4249fc1f023a2106170bbf715e2e1a0ebc2d5b1f Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Tue, 23 Aug 2016 10:20:31 +0200 Subject: netfilter: ebtables: put module reference when an incorrect extension is found commit bcf493428840 ("netfilter: ebtables: Fix extension lookup with identical name") added a second lookup in case the extension that was found during the first lookup matched another extension with the same name, but didn't release the reference on the incorrect module. Fixes: bcf493428840 ("netfilter: ebtables: Fix extension lookup with identical name") Signed-off-by: Sabrina Dubroca Acked-by: Phil Sutter Signed-off-by: Pablo Neira Ayuso diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index cceac5b..0833c25 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -368,6 +368,8 @@ ebt_check_match(struct ebt_entry_match *m, struct xt_mtchk_param *par, match = xt_find_match(NFPROTO_BRIDGE, m->u.name, 0); if (IS_ERR(match) || match->family != NFPROTO_BRIDGE) { + if (!IS_ERR(match)) + module_put(match->me); request_module("ebt_%s", m->u.name); match = xt_find_match(NFPROTO_BRIDGE, m->u.name, 0); } -- cgit v0.10.2 From 5bb53c0fb8e0fc2e34287d5d0fcadc784de913e1 Mon Sep 17 00:00:00 2001 From: Andrey Ryabinin Date: Tue, 23 Aug 2016 18:55:31 +0300 Subject: fs/block_dev: fix potential NULL ptr deref in freeze_bdev() Calling freeze_bdev() twice on the same block device without mounted filesystem get_super() will return NULL, which will lead to NULL-ptr dereference later in drop_super(). Check get_super() result to fix that. Note, that this is a purely theoretical issue. We have only 3 freeze_bdev() callers. 2 of them are in filesystem code and used on a device with mounted fs. The third one in lock_fs() has protection in upper-layer code against freezing block device the second time without thawing it first. Signed-off-by: Andrey Ryabinin Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe diff --git a/fs/block_dev.c b/fs/block_dev.c index e17bdbd..08ae993 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -249,7 +249,8 @@ struct super_block *freeze_bdev(struct block_device *bdev) * thaw_bdev drops it. */ sb = get_super(bdev); - drop_super(sb); + if (sb) + drop_super(sb); mutex_unlock(&bdev->bd_fsfreeze_mutex); return sb; } -- cgit v0.10.2 From 468c298ad3ed3f0d94a65f8ca00f6bfc6c2b4e33 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 25 Aug 2016 08:56:44 -0600 Subject: Revert "floppy: fix open(O_ACCMODE) for ioctl-only open" This reverts commit ff06db1efb2ad6db06eb5b99b88a0c15a9cc9b0e. diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index b71a9c7..c557057 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3663,6 +3663,11 @@ static int floppy_open(struct block_device *bdev, fmode_t mode) opened_bdev[drive] = bdev; + if (!(mode & (FMODE_READ|FMODE_WRITE))) { + res = -EINVAL; + goto out; + } + res = -ENXIO; if (!floppy_track_buffer) { @@ -3706,15 +3711,13 @@ static int floppy_open(struct block_device *bdev, fmode_t mode) if (UFDCS->rawcmd == 1) UFDCS->rawcmd = 2; - if (mode & (FMODE_READ|FMODE_WRITE)) { - UDRS->last_checked = 0; - clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags); - check_disk_change(bdev); - if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags)) - goto out; - if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags)) - goto out; - } + UDRS->last_checked = 0; + clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags); + check_disk_change(bdev); + if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags)) + goto out; + if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags)) + goto out; res = -EROFS; -- cgit v0.10.2 From f2791e7eadf437633f30faa51b30878cf15650be Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 25 Aug 2016 08:56:51 -0600 Subject: Revert "floppy: refactor open() flags handling" This reverts commit 09954bad448791ef01202351d437abdd9497a804. diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index c557057..e3d8e4c 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3663,11 +3663,6 @@ static int floppy_open(struct block_device *bdev, fmode_t mode) opened_bdev[drive] = bdev; - if (!(mode & (FMODE_READ|FMODE_WRITE))) { - res = -EINVAL; - goto out; - } - res = -ENXIO; if (!floppy_track_buffer) { @@ -3711,20 +3706,21 @@ static int floppy_open(struct block_device *bdev, fmode_t mode) if (UFDCS->rawcmd == 1) UFDCS->rawcmd = 2; - UDRS->last_checked = 0; - clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags); - check_disk_change(bdev); - if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags)) - goto out; - if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags)) - goto out; - - res = -EROFS; - - if ((mode & FMODE_WRITE) && - !test_bit(FD_DISK_WRITABLE_BIT, &UDRS->flags)) - goto out; - + if (!(mode & FMODE_NDELAY)) { + if (mode & (FMODE_READ|FMODE_WRITE)) { + UDRS->last_checked = 0; + clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags); + check_disk_change(bdev); + if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags)) + goto out; + if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags)) + goto out; + } + res = -EROFS; + if ((mode & FMODE_WRITE) && + !test_bit(FD_DISK_WRITABLE_BIT, &UDRS->flags)) + goto out; + } mutex_unlock(&open_lock); mutex_unlock(&floppy_mutex); return 0; -- cgit v0.10.2 From 07c72d7d54d138eb2ca37709a5a3d55fbcc01536 Mon Sep 17 00:00:00 2001 From: Tatyana Nikolova Date: Wed, 24 Aug 2016 13:59:17 -0500 Subject: i40iw: Send last streaming mode message for loopback connections Send a zero length last streaming mode message for loopback connections to synchronize between accepting QP and connecting QP. This avoids data transfer to start on the accepting QP before the connecting QP is in RTS. Also remove function i40iw_loopback_nop() as it is no longer used. Fixes: f27b4746f378 ("i40iw: add connection management code") Signed-off-by: Tatyana Nikolova Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c index 6434398..7ca0638 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_cm.c +++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c @@ -3347,26 +3347,6 @@ int i40iw_cm_disconn(struct i40iw_qp *iwqp) } /** - * i40iw_loopback_nop - Send a nop - * @qp: associated hw qp - */ -static void i40iw_loopback_nop(struct i40iw_sc_qp *qp) -{ - u64 *wqe; - u64 header; - - wqe = qp->qp_uk.sq_base->elem; - set_64bit_val(wqe, 0, 0); - set_64bit_val(wqe, 8, 0); - set_64bit_val(wqe, 16, 0); - - header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) | - LS_64(0, I40IWQPSQ_SIGCOMPL) | - LS_64(qp->qp_uk.swqe_polarity, I40IWQPSQ_VALID); - set_64bit_val(wqe, 24, header); -} - -/** * i40iw_qp_disconnect - free qp and close cm * @iwqp: associate qp for the connection */ @@ -3638,7 +3618,7 @@ int i40iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) } else { if (iwqp->page) iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page); - i40iw_loopback_nop(&iwqp->sc_qp); + dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp, NULL, 0, 0); } if (iwqp->page) -- cgit v0.10.2 From a7d4b8f2565ad0dfdff9a222d1d87990c73b36e8 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Tue, 16 Aug 2016 14:38:24 +0200 Subject: KVM: s390: don't use current->thread.fpu.* when accessing registers As the meaning of these variables and pointers seems to change more frequently, let's directly access our save area, instead of going via current->thread. Right now, this is broken for set/get_fpu. They simply overwrite the host registers, as the pointers to the current save area were turned into the static host save area. Cc: stable@vger.kernel.org # 4.7 Fixes: 3f6813b9a5e0 ("s390/fpu: allocate 'struct fpu' with the task_struct") Reported-by: Hao QingFeng Signed-off-by: David Hildenbrand Signed-off-by: Christian Borntraeger diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index f142215..607ec91 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -2231,9 +2231,10 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) return -EINVAL; current->thread.fpu.fpc = fpu->fpc; if (MACHINE_HAS_VX) - convert_fp_to_vx(current->thread.fpu.vxrs, (freg_t *)fpu->fprs); + convert_fp_to_vx((__vector128 *) vcpu->run->s.regs.vrs, + (freg_t *) fpu->fprs); else - memcpy(current->thread.fpu.fprs, &fpu->fprs, sizeof(fpu->fprs)); + memcpy(vcpu->run->s.regs.fprs, &fpu->fprs, sizeof(fpu->fprs)); return 0; } @@ -2242,9 +2243,10 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) /* make sure we have the latest values */ save_fpu_regs(); if (MACHINE_HAS_VX) - convert_vx_to_fp((freg_t *)fpu->fprs, current->thread.fpu.vxrs); + convert_vx_to_fp((freg_t *) fpu->fprs, + (__vector128 *) vcpu->run->s.regs.vrs); else - memcpy(fpu->fprs, current->thread.fpu.fprs, sizeof(fpu->fprs)); + memcpy(fpu->fprs, vcpu->run->s.regs.fprs, sizeof(fpu->fprs)); fpu->fpc = current->thread.fpu.fpc; return 0; } -- cgit v0.10.2 From 9a5382e8ffe86412f442f6a34fde43f94aae530b Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 22 Aug 2016 16:52:21 +0200 Subject: i2c: mux: demux-pinctrl: invalidate properly when switching fails Make sure the index to the active channel is invalidated when switching fails. Signed-off-by: Wolfram Sang Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c index 215ac87..b6b9d25 100644 --- a/drivers/i2c/muxes/i2c-demux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c @@ -107,6 +107,7 @@ static int i2c_demux_activate_master(struct i2c_demux_pinctrl_priv *priv, u32 ne of_changeset_revert(&priv->chan[new_chan].chgset); err: dev_err(priv->dev, "failed to setup demux-adapter %d (%d)\n", new_chan, ret); + priv->cur_chan = -EINVAL; return ret; } -- cgit v0.10.2 From 488d69ea72457c7566b36eb0d484d579f19963c5 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 24 Aug 2016 11:19:28 +0200 Subject: i2c: sh_mobile: use proper device with dma_mapping_error We must use the same device we used for mapping. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c index 6fb3e26..05b1eea 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -610,7 +610,7 @@ static void sh_mobile_i2c_xfer_dma(struct sh_mobile_i2c_data *pd) return; dma_addr = dma_map_single(chan->device->dev, pd->msg->buf, pd->msg->len, dir); - if (dma_mapping_error(pd->dev, dma_addr)) { + if (dma_mapping_error(chan->device->dev, dma_addr)) { dev_dbg(pd->dev, "dma map failed, using PIO\n"); return; } -- cgit v0.10.2 From c13c29186c59b056d6ec141b5967c2ca3efc0c16 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 24 Aug 2016 11:19:29 +0200 Subject: i2c: rcar: use proper device with dma_mapping_error We must use the same device we used for mapping. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 52407f3..9bd849d 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -378,7 +378,7 @@ static void rcar_i2c_dma(struct rcar_i2c_priv *priv) } dma_addr = dma_map_single(chan->device->dev, buf, len, dir); - if (dma_mapping_error(dev, dma_addr)) { + if (dma_mapping_error(chan->device->dev, dma_addr)) { dev_dbg(dev, "dma map failed, using PIO\n"); return; } -- cgit v0.10.2 From b31cc4b37e8e33e84e9f990d0d84387f37ef01a1 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 15 Aug 2016 00:47:22 +0200 Subject: i2c: bcm-kona: fix inconsistent indenting smatch rightfully says: drivers/i2c/busses/i2c-bcm-kona.c:646 bcm_kona_i2c_xfer() warn: inconsistent indenting Signed-off-by: Wolfram Sang Reviewed-by: Tim Kryger diff --git a/drivers/i2c/busses/i2c-bcm-kona.c b/drivers/i2c/busses/i2c-bcm-kona.c index f987432..258cb9a 100644 --- a/drivers/i2c/busses/i2c-bcm-kona.c +++ b/drivers/i2c/busses/i2c-bcm-kona.c @@ -643,7 +643,7 @@ static int bcm_kona_i2c_xfer(struct i2c_adapter *adapter, if (rc < 0) { dev_err(dev->device, "restart cmd failed rc = %d\n", rc); - goto xfer_send_stop; + goto xfer_send_stop; } } -- cgit v0.10.2 From 90a56f72edb088c678083c32d05936c7c8d9a948 Mon Sep 17 00:00:00 2001 From: Luiz Augusto von Dentz Date: Fri, 12 Aug 2016 15:11:28 +0300 Subject: Bluetooth: Fix bt_sock_recvmsg when MSG_TRUNC is not set Commit b5f34f9420b50c9b5876b9a2b68e96be6d629054 attempt to introduce proper handling for MSG_TRUNC but recv and variants should still work as read if no flag is passed, but because the code may set MSG_TRUNC to msg->msg_flags that shall not be used as it may cause it to be behave as if MSG_TRUNC is always, so instead of using it this changes the code to use the flags parameter which shall contain the original flags. Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Marcel Holtmann diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index ece45e0..0b5f729 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -250,7 +250,7 @@ int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, skb_free_datagram(sk, skb); - if (msg->msg_flags & MSG_TRUNC) + if (flags & MSG_TRUNC) copied = skblen; return err ? : copied; -- cgit v0.10.2 From 4f34228b67246ae3b3ab1dc33b980c77c0650ef4 Mon Sep 17 00:00:00 2001 From: Luiz Augusto von Dentz Date: Mon, 15 Aug 2016 16:02:20 +0300 Subject: Bluetooth: Fix hci_sock_recvmsg when MSG_TRUNC is not set Similar to bt_sock_recvmsg MSG_TRUNC shall be checked using the original flags not msg_flags. Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Marcel Holtmann diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 6ef8a01..96f04b7 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -1091,7 +1091,7 @@ static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, skb_free_datagram(sk, skb); - if (msg->msg_flags & MSG_TRUNC) + if (flags & MSG_TRUNC) copied = skblen; return err ? : copied; -- cgit v0.10.2 From 2b721f20770ccbca4d3dad58e1bd44aa570efb3f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 10 Aug 2016 18:52:38 +0200 Subject: drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION For reasons that entirely elude me fb.h exposes all the structures, even when it is not enabled. Except for special stuff like fb_defio. Which means all the drivers which haven't yet switched over to the defio support in the helpers and still roll their own, will fail to compile when fbdev emulation is disabled. Protect just those bits, as a gnarly reminder that conversion to the core defio helpers would be good. Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1470847958-28465-6-git-send-email-daniel.vetter@ffwll.ch Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c index df26570..28c1423 100644 --- a/drivers/gpu/drm/qxl/qxl_fb.c +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -73,10 +73,12 @@ static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image, } } +#ifdef CONFIG_DRM_FBDEV_EMULATION static struct fb_deferred_io qxl_defio = { .delay = QXL_DIRTY_DELAY, .deferred_io = drm_fb_helper_deferred_io, }; +#endif static struct fb_ops qxlfb_ops = { .owner = THIS_MODULE, @@ -313,8 +315,10 @@ static int qxlfb_create(struct qxl_fbdev *qfbdev, goto out_destroy_fbi; } +#ifdef CONFIG_DRM_FBDEV_EMULATION info->fbdefio = &qxl_defio; fb_deferred_io_init(info); +#endif qdev->fbdev_info = info; qdev->fbdev_qfb = &qfbdev->qfb; diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index d5df555..9688bfa 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -203,6 +203,7 @@ static int udl_fb_open(struct fb_info *info, int user) ufbdev->fb_count++; +#ifdef CONFIG_DRM_FBDEV_EMULATION if (fb_defio && (info->fbdefio == NULL)) { /* enable defio at last moment if not disabled by client */ @@ -218,6 +219,7 @@ static int udl_fb_open(struct fb_info *info, int user) info->fbdefio = fbdefio; fb_deferred_io_init(info); } +#endif pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n", info->node, user, info, ufbdev->fb_count); @@ -235,12 +237,14 @@ static int udl_fb_release(struct fb_info *info, int user) ufbdev->fb_count--; +#ifdef CONFIG_DRM_FBDEV_EMULATION if ((ufbdev->fb_count == 0) && (info->fbdefio)) { fb_deferred_io_cleanup(info); kfree(info->fbdefio); info->fbdefio = NULL; info->fbops->fb_mmap = udl_fb_mmap; } +#endif pr_warn("released /dev/fb%d user=%d count=%d\n", info->node, user, ufbdev->fb_count); -- cgit v0.10.2 From 869c554808ccf7ddd25be5317073b88ceddb8507 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 25 Aug 2016 14:11:43 -0600 Subject: mmc: fix use-after-free of struct request We call mmc_req_is_special() after having processed a request, but it could be freed after that. Check that ahead of time, and use the cached value. Reported-by: Hans de Goede Tested-by: Hans de Goede Fixes: c2df40dfb8c0 ("drivers: use req op accessor") Signed-off-by: Jens Axboe diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 82503e6..2206d44 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -2151,6 +2151,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) struct mmc_card *card = md->queue.card; struct mmc_host *host = card->host; unsigned long flags; + bool req_is_special = mmc_req_is_special(req); if (req && !mq->mqrq_prev->req) /* claim host only for the first request */ @@ -2191,8 +2192,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) } out: - if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) || - mmc_req_is_special(req)) + if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) || req_is_special) /* * Release host when there are no more requests * and after special request(discard, flush) is done. diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 29578e9..7080572 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -65,6 +65,8 @@ static int mmc_queue_thread(void *d) spin_unlock_irq(q->queue_lock); if (req || mq->mqrq_prev->req) { + bool req_is_special = mmc_req_is_special(req); + set_current_state(TASK_RUNNING); mq->issue_fn(mq, req); cond_resched(); @@ -80,7 +82,7 @@ static int mmc_queue_thread(void *d) * has been finished. Do not assign it to previous * request. */ - if (mmc_req_is_special(req)) + if (req_is_special) mq->mqrq_cur->req = NULL; mq->mqrq_prev->brq.mrq.data = NULL; -- cgit v0.10.2 From a5de125dd46c851fc962806135953c1bd0a0f0df Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 24 Aug 2016 13:32:19 +0000 Subject: tipc: fix the error handling in tipc_udp_enable() Fix to return a negative error code in enable_mcast() error handling case, and release udp socket when necessary. Fixes: d0f91938bede ("tipc: add ip/udp media type") Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index b016c01..ae7e14c 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -396,10 +396,13 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, tuncfg.encap_destroy = NULL; setup_udp_tunnel_sock(net, ub->ubsock, &tuncfg); - if (enable_mcast(ub, remote)) + err = enable_mcast(ub, remote); + if (err) goto err; return 0; err: + if (ub->ubsock) + udp_tunnel_sock_release(ub->ubsock); kfree(ub); return err; } -- cgit v0.10.2 From 166ee5b87866de07a3e56c1b757f2b5cabba72a5 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 24 Aug 2016 09:39:02 -0700 Subject: qdisc: fix a module refcount leak in qdisc_create_dflt() Should qdisc_alloc() fail, we must release the module refcount we got right before. Fixes: 6da7c8fcbcbd ("qdisc: allow setting default queuing discipline") Signed-off-by: Eric Dumazet Acked-by: John Fastabend Acked-by: John Fastabend Signed-off-by: David S. Miller diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index e95b67c..657c133 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -643,18 +643,19 @@ struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue, struct Qdisc *sch; if (!try_module_get(ops->owner)) - goto errout; + return NULL; sch = qdisc_alloc(dev_queue, ops); - if (IS_ERR(sch)) - goto errout; + if (IS_ERR(sch)) { + module_put(ops->owner); + return NULL; + } sch->parent = parentid; if (!ops->init || ops->init(sch, NULL) == 0) return sch; qdisc_destroy(sch); -errout: return NULL; } EXPORT_SYMBOL(qdisc_create_dflt); -- cgit v0.10.2 From 4f101c47791cdcb831b3ef1f831b1cc51e4fe03c Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Wed, 24 Aug 2016 11:01:20 -0700 Subject: net: dsa: bcm_sf2: Fix race condition while unmasking interrupts We kept shadow copies of which interrupt sources we have enabled and disabled, but due to an order bug in how intrl2_mask_clear was defined, we could run into the following scenario: CPU0 CPU1 intrl2_1_mask_clear(..) sets INTRL2_CPU_MASK_CLEAR bcm_sf2_switch_1_isr read INTRL2_CPU_STATUS and masks with stale irq1_mask value updates irq1_mask value Which would make us loop again and again trying to process and interrupt we are not clearing since our copy of whether it was enabled before still indicates it was not. Fix this by updating the shadow copy first, and then unasking at the HW level. Fixes: 246d7f773c13 ("net: dsa: add Broadcom SF2 switch driver") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller diff --git a/drivers/net/dsa/bcm_sf2.h b/drivers/net/dsa/bcm_sf2.h index 463bed8..dd446e4 100644 --- a/drivers/net/dsa/bcm_sf2.h +++ b/drivers/net/dsa/bcm_sf2.h @@ -205,8 +205,8 @@ static inline void name##_writeq(struct bcm_sf2_priv *priv, u64 val, \ static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \ u32 mask) \ { \ - intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \ priv->irq##which##_mask &= ~(mask); \ + intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \ } \ static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \ u32 mask) \ -- cgit v0.10.2 From c3e70edd7c2eed6acd234627a6007627f5c76e8e Mon Sep 17 00:00:00 2001 From: Xander Huff Date: Wed, 24 Aug 2016 16:47:53 -0500 Subject: Revert "phy: IRQ cannot be shared" This reverts: commit 33c133cc7598 ("phy: IRQ cannot be shared") On hardware with multiple PHY devices hooked up to the same IRQ line, allow them to share it. Sergei Shtylyov says: "I'm not sure now what was the reason I concluded that the IRQ sharing was impossible... most probably I thought that the kernel IRQ handling code exited the loop over the IRQ actions once IRQ_HANDLED was returned -- which is obviously not so in reality..." Signed-off-by: Xander Huff Signed-off-by: Nathan Sullivan Signed-off-by: David S. Miller diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index c5dc2c36..c6f6683 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -722,8 +722,10 @@ phy_err: int phy_start_interrupts(struct phy_device *phydev) { atomic_set(&phydev->irq_disable, 0); - if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt", - phydev) < 0) { + if (request_irq(phydev->irq, phy_interrupt, + IRQF_SHARED, + "phy_interrupt", + phydev) < 0) { pr_warn("%s: Can't get IRQ %d (PHY)\n", phydev->mdio.bus->name, phydev->irq); phydev->irq = PHY_POLL; -- cgit v0.10.2 From f38ff2ee7727994685494bcc4d7c274b35b5418a Mon Sep 17 00:00:00 2001 From: Anjali Singhai Jain Date: Wed, 24 Aug 2016 17:51:53 -0700 Subject: i40e: Change some init flow for the client This change makes a common flow for Client instance open during init and reset path. The Client subtask can handle both the cases instead of making a separate notify_client_of_open call. Also it may fix a bug during reset where the service task was leaking some memory and causing issues. Change-Id: I7232a32fd52b82e863abb54266fa83122f80a0cd Signed-off-by: Anjali Singhai Jain Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index e1370c5..618f184 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -199,6 +199,7 @@ void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi) void i40e_notify_client_of_netdev_open(struct i40e_vsi *vsi) { struct i40e_client_instance *cdev; + int ret = 0; if (!vsi) return; @@ -211,7 +212,14 @@ void i40e_notify_client_of_netdev_open(struct i40e_vsi *vsi) "Cannot locate client instance open routine\n"); continue; } - cdev->client->ops->open(&cdev->lan_info, cdev->client); + if (!(test_bit(__I40E_CLIENT_INSTANCE_OPENED, + &cdev->state))) { + ret = cdev->client->ops->open(&cdev->lan_info, + cdev->client); + if (!ret) + set_bit(__I40E_CLIENT_INSTANCE_OPENED, + &cdev->state); + } } } mutex_unlock(&i40e_client_instance_mutex); @@ -407,12 +415,14 @@ struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf, * i40e_client_add_instance - add a client instance struct to the instance list * @pf: pointer to the board struct * @client: pointer to a client struct in the client list. + * @existing: if there was already an existing instance * - * Returns cdev ptr on success, NULL on failure + * Returns cdev ptr on success or if already exists, NULL on failure **/ static struct i40e_client_instance *i40e_client_add_instance(struct i40e_pf *pf, - struct i40e_client *client) + struct i40e_client *client, + bool *existing) { struct i40e_client_instance *cdev; struct netdev_hw_addr *mac = NULL; @@ -421,7 +431,7 @@ struct i40e_client_instance *i40e_client_add_instance(struct i40e_pf *pf, mutex_lock(&i40e_client_instance_mutex); list_for_each_entry(cdev, &i40e_client_instances, list) { if ((cdev->lan_info.pf == pf) && (cdev->client == client)) { - cdev = NULL; + *existing = true; goto out; } } @@ -505,6 +515,7 @@ void i40e_client_subtask(struct i40e_pf *pf) { struct i40e_client_instance *cdev; struct i40e_client *client; + bool existing = false; int ret = 0; if (!(pf->flags & I40E_FLAG_SERVICE_CLIENT_REQUESTED)) @@ -528,18 +539,25 @@ void i40e_client_subtask(struct i40e_pf *pf) /* check if L2 VSI is up, if not we are not ready */ if (test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state)) continue; + } else { + dev_warn(&pf->pdev->dev, "This client %s is being instanciated at probe\n", + client->name); } /* Add the client instance to the instance list */ - cdev = i40e_client_add_instance(pf, client); + cdev = i40e_client_add_instance(pf, client, &existing); if (!cdev) continue; - /* Also up the ref_cnt of no. of instances of this client */ - atomic_inc(&client->ref_cnt); - dev_info(&pf->pdev->dev, "Added instance of Client %s to PF%d bus=0x%02x func=0x%02x\n", - client->name, pf->hw.pf_id, - pf->hw.bus.device, pf->hw.bus.func); + if (!existing) { + /* Also up the ref_cnt for no. of instances of this + * client. + */ + atomic_inc(&client->ref_cnt); + dev_info(&pf->pdev->dev, "Added instance of Client %s to PF%d bus=0x%02x func=0x%02x\n", + client->name, pf->hw.pf_id, + pf->hw.bus.device, pf->hw.bus.func); + } /* Send an Open request to the client */ atomic_inc(&cdev->ref_cnt); @@ -588,7 +606,8 @@ int i40e_lan_add_device(struct i40e_pf *pf) pf->hw.pf_id, pf->hw.bus.device, pf->hw.bus.func); /* Since in some cases register may have happened before a device gets - * added, we can schedule a subtask to go initiate the clients. + * added, we can schedule a subtask to go initiate the clients if + * they can be launched at probe time. */ pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED; i40e_service_event_schedule(pf); diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index c6ac7a6..828ed28 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -5431,7 +5431,6 @@ int i40e_open(struct net_device *netdev) wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16); udp_tunnel_get_rx_info(netdev); - i40e_notify_client_of_netdev_open(vsi); return 0; } -- cgit v0.10.2 From b628d611a2a53858263fc419dba552f32431dba4 Mon Sep 17 00:00:00 2001 From: Gao Feng Date: Thu, 25 Aug 2016 09:45:39 +0800 Subject: 8139cp: Fix one possible deadloop in cp_rx_poll When cp_rx_poll does not get enough packet, it will check the rx interrupt status again. If so, it will jumpt to rx_status_loop again. But the goto jump resets the rx variable as zero too. As a result, it causes one possible deadloop. Assume this case, rx_status_loop only gets the packet count which is less than budget, and (cpr16(IntrStatus) & cp_rx_intr_mask) condition is always true. It causes the deadloop happens and system is blocked. Signed-off-by: Gao Feng Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c index deae10d..5297bf7 100644 --- a/drivers/net/ethernet/realtek/8139cp.c +++ b/drivers/net/ethernet/realtek/8139cp.c @@ -467,8 +467,8 @@ static int cp_rx_poll(struct napi_struct *napi, int budget) unsigned int rx_tail = cp->rx_tail; int rx; -rx_status_loop: rx = 0; +rx_status_loop: cpw16(IntrStatus, cp_rx_intr_mask); while (rx < budget) { -- cgit v0.10.2 From becc8d3ccdcfa746fc4302092da11ad763bc9e49 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 18 Aug 2016 03:08:22 +0900 Subject: MAINTAINERS: add tree entry for ARM/UniPhier architecture Add T: entry for a new git tree, which I expect UniPhier SoC updates will be pulled from. Signed-off-by: Masahiro Yamada Signed-off-by: Olof Johansson diff --git a/MAINTAINERS b/MAINTAINERS index 0bbe4b1..a437901 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1822,6 +1822,7 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson.git ARM/UNIPHIER ARCHITECTURE M: Masahiro Yamada L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +T: git git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier.git S: Maintained F: arch/arm/boot/dts/uniphier* F: arch/arm/include/asm/hardware/cache-uniphier.h -- cgit v0.10.2 From 0a10e85b6c546c2f34ee257b955f33dbb4ece746 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Wed, 24 Aug 2016 15:14:38 +0200 Subject: ARM: tegra: Correct polarity for Tegra114 PMIC interrupt The ARM GIC only supports interrupts with either level-high or rising-edge types for SPIs. The interrupt type for the Palmas PMIC used for Tegra114 boards is specified as level-low which is invalid for the GIC. This has gone undetected because until recently, failures to set the interrupt type when the interrupts are mapped via firmware (such as device-tree) have not been reported. Since commits 4b357daed698 ("genirq: Look-up trigger type if not specified by caller") and 1e2a7d78499e ("irqdomain: Don't set type when mapping an IRQ"), failure to set the interrupt type will cause the requesting of the interrupt to fail and exposing incorrectly configured interrupts. Please note that although the interrupt type was never being set for the Palmas PMIC, it was still working fine, because the default type setting for the interrupt, 'level-high', happen to match the correct type for the interrupt. Finally, it should be noted that the Palmas interrupt from the PMIC is actually 'level-low', however, this interrupt signal is inverted by the Tegra PMC and so the GIC actually sees a 'level-high' interrupt which is what should be specified in the device-tree interrupt specifier. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding Signed-off-by: Olof Johansson diff --git a/arch/arm/boot/dts/tegra114-dalmore.dts b/arch/arm/boot/dts/tegra114-dalmore.dts index 1dfc492..1444fbd 100644 --- a/arch/arm/boot/dts/tegra114-dalmore.dts +++ b/arch/arm/boot/dts/tegra114-dalmore.dts @@ -897,7 +897,7 @@ palmas: tps65913@58 { compatible = "ti,palmas"; reg = <0x58>; - interrupts = <0 86 IRQ_TYPE_LEVEL_LOW>; + interrupts = <0 86 IRQ_TYPE_LEVEL_HIGH>; #interrupt-cells = <2>; interrupt-controller; diff --git a/arch/arm/boot/dts/tegra114-roth.dts b/arch/arm/boot/dts/tegra114-roth.dts index 70cf409..966a7fc 100644 --- a/arch/arm/boot/dts/tegra114-roth.dts +++ b/arch/arm/boot/dts/tegra114-roth.dts @@ -802,7 +802,7 @@ palmas: pmic@58 { compatible = "ti,palmas"; reg = <0x58>; - interrupts = ; + interrupts = ; #interrupt-cells = <2>; interrupt-controller; diff --git a/arch/arm/boot/dts/tegra114-tn7.dts b/arch/arm/boot/dts/tegra114-tn7.dts index 17dd145..a161fa1 100644 --- a/arch/arm/boot/dts/tegra114-tn7.dts +++ b/arch/arm/boot/dts/tegra114-tn7.dts @@ -63,7 +63,7 @@ palmas: pmic@58 { compatible = "ti,palmas"; reg = <0x58>; - interrupts = ; + interrupts = ; #interrupt-cells = <2>; interrupt-controller; -- cgit v0.10.2 From ed150e1a5cf20c04cf0b2d2c34e498fc1d6519be Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 26 Aug 2016 15:58:40 +1000 Subject: xfs: don't perform lookups on zero-height btrees If the caller passes in a cursor to a zero-height btree (which is impossible), we never set block to anything but NULL, which causes the later dereference of it to crash. Instead, just return -EFSCORRUPTED. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index b5c213a..33f1406 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -1814,6 +1814,10 @@ xfs_btree_lookup( XFS_BTREE_STATS_INC(cur, lookup); + /* No such thing as a zero-level tree. */ + if (cur->bc_nlevels == 0) + return -EFSCORRUPTED; + block = NULL; keyno = 0; -- cgit v0.10.2 From 738f57c16a2bb527c705641f0fc1c68ff8cba72a Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 26 Aug 2016 15:59:19 +1000 Subject: xfs: disallow mounting of realtime + rmap filesystems Since the kernel doesn't currently support the realtime rmapbt, don't allow such filesystems to be mounted. Support will appear in a future release. Signed-off-by: Darrick J. Wong Reviewed-by: Carlos Maiolino Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 24ef83e..fd6be45 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1574,9 +1574,16 @@ xfs_fs_fill_super( } } - if (xfs_sb_version_hasrmapbt(&mp->m_sb)) + if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { + if (mp->m_sb.sb_rblocks) { + xfs_alert(mp, + "EXPERIMENTAL reverse mapping btree not compatible with realtime device!"); + error = -EINVAL; + goto out_filestream_unmount; + } xfs_alert(mp, "EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!"); + } error = xfs_mountfs(mp); if (error) -- cgit v0.10.2 From da1f039d6947b1a49f13b39a6de0df2a3e9e1ed1 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 26 Aug 2016 15:59:31 +1000 Subject: xfs: don't log the entire end of the AGF When we're logging the last non-spare field in the AGF, we don't need to log the spare fields, so plumb in a new AGF logging flag to help us avoid that. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index 3dd8f1d..05b5243 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -2278,6 +2278,8 @@ xfs_alloc_log_agf( offsetof(xfs_agf_t, agf_btreeblks), offsetof(xfs_agf_t, agf_uuid), offsetof(xfs_agf_t, agf_rmap_blocks), + /* needed so that we don't log the whole rest of the structure: */ + offsetof(xfs_agf_t, agf_spare64), sizeof(xfs_agf_t) }; diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index e6a8bea..270fb5c 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -674,7 +674,8 @@ typedef struct xfs_agf { #define XFS_AGF_BTREEBLKS 0x00000800 #define XFS_AGF_UUID 0x00001000 #define XFS_AGF_RMAP_BLOCKS 0x00002000 -#define XFS_AGF_NUM_BITS 14 +#define XFS_AGF_SPARE64 0x00004000 +#define XFS_AGF_NUM_BITS 15 #define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1) #define XFS_AGF_FLAGS \ @@ -691,7 +692,8 @@ typedef struct xfs_agf { { XFS_AGF_LONGEST, "LONGEST" }, \ { XFS_AGF_BTREEBLKS, "BTREEBLKS" }, \ { XFS_AGF_UUID, "UUID" }, \ - { XFS_AGF_RMAP_BLOCKS, "RMAP_BLOCKS" } + { XFS_AGF_RMAP_BLOCKS, "RMAP_BLOCKS" }, \ + { XFS_AGF_SPARE64, "SPARE64" } /* disk block (xfs_daddr_t) in the AG */ #define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log)) -- cgit v0.10.2 From 722278997bc964349e23e7061d541f8df3133a04 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 26 Aug 2016 15:59:50 +1000 Subject: xfs: fix some key handling problems in _btree_simple_query_range We only need the record's high key for the first record that we look at; for all records, we /definitely/ need the regular record key. Therefore, fix how the simple range query function gets its keys. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index 33f1406..b70d9f9 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -4563,10 +4563,10 @@ xfs_btree_simple_query_range( error = xfs_btree_get_rec(cur, &recp, &stat); if (error || !stat) break; - cur->bc_ops->init_high_key_from_rec(&rec_key, recp); /* Skip if high_key(rec) < low_key. */ if (firstrec) { + cur->bc_ops->init_high_key_from_rec(&rec_key, recp); firstrec = false; diff = cur->bc_ops->diff_two_keys(cur, low_key, &rec_key); @@ -4575,6 +4575,7 @@ xfs_btree_simple_query_range( } /* Stop if high_key < low_key(rec). */ + cur->bc_ops->init_key_from_rec(&rec_key, recp); diff = cur->bc_ops->diff_two_keys(cur, &rec_key, high_key); if (diff > 0) break; -- cgit v0.10.2 From 5b5c2dbd3c9bcfa89fba9709c12ecc0a445c6e40 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 26 Aug 2016 16:00:10 +1000 Subject: xfs: simple btree query range should look right if LE lookup fails If the initial LOOKUP_LE in the simple query range fails to find anything, we should attempt to increment the btree cursor to see if there actually /are/ records for what we're trying to find. Without this patch, a bnobt range query of (0, $agsize) returns no results because the leftmost record never has a startblock of zero. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index b70d9f9..0856979 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -4558,6 +4558,13 @@ xfs_btree_simple_query_range( if (error) goto out; + /* Nothing? See if there's anything to the right. */ + if (!stat) { + error = xfs_btree_increment(cur, 0, &stat); + if (error) + goto out; + } + while (stat) { /* Find the record. */ error = xfs_btree_get_rec(cur, &recp, &stat); -- cgit v0.10.2 From f3d7ebdeb2c297bd26272384e955033493ca291c Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 26 Aug 2016 16:01:30 +1000 Subject: xfs: fix superblock inprogress check From inspection, the superblock sb_inprogress check is done in the verifier and triggered only for the primary superblock via a "bp->b_bn == XFS_SB_DADDR" check. Unfortunately, the primary superblock is an uncached buffer, and hence it is configured by xfs_buf_read_uncached() with: bp->b_bn = XFS_BUF_DADDR_NULL; /* always null for uncached buffers */ And so this check never triggers. Fix it. cc: Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 0e3d4f5..4aecc5f 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -583,7 +583,8 @@ xfs_sb_verify( * Only check the in progress field for the primary superblock as * mkfs.xfs doesn't clear it from secondary superblocks. */ - return xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR, + return xfs_mount_validate_sb(mp, &sb, + bp->b_maps[0].bm_bn == XFS_SB_DADDR, check_version); } -- cgit v0.10.2 From 800b2694f890cc35a1bda63501fc71c94389d517 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 26 Aug 2016 16:01:59 +1000 Subject: xfs: prevent dropping ioend completions during buftarg wait xfs_wait_buftarg() waits for all pending I/O, drains the ioend completion workqueue and walks the LRU until all buffers in the cache have been released. This is traditionally an unmount operation` but the mechanism is also reused during filesystem freeze. xfs_wait_buftarg() invokes drain_workqueue() as part of the quiesce, which is intended more for a shutdown sequence in that it indicates to the queue that new operations are not expected once the drain has begun. New work jobs after this point result in a WARN_ON_ONCE() and are otherwise dropped. With filesystem freeze, however, read operations are allowed and can proceed during or after the workqueue drain. If such a read occurs during the drain sequence, the workqueue infrastructure complains about the queued ioend completion work item and drops it on the floor. As a result, the buffer remains on the LRU and the freeze never completes. Despite the fact that the overall buffer cache cleanup is not necessary during freeze, fix up this operation such that it is safe to invoke during non-unmount quiesce operations. Replace the drain_workqueue() call with flush_workqueue(), which runs a similar serialization on pending workqueue jobs without causing new jobs to be dropped. This is safe for unmount as unmount independently locks out new operations by the time xfs_wait_buftarg() is invoked. cc: Signed-off-by: Brian Foster Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 607cc29..b5b9bff 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1611,7 +1611,7 @@ xfs_wait_buftarg( */ while (percpu_counter_sum(&btp->bt_io_count)) delay(100); - drain_workqueue(btp->bt_mount->m_buf_workqueue); + flush_workqueue(btp->bt_mount->m_buf_workqueue); /* loop until there is nothing left on the lru list. */ while (list_lru_count(&btp->bt_lru)) { -- cgit v0.10.2 From 0811ef7e2f5470833a353426a6fbe0b845aea926 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Thu, 11 Aug 2016 10:50:41 +0100 Subject: bus: arm-ccn: fix PMU interrupt flags Currently the IRQ core is permitted to make the CCN PMU IRQ handler threaded, and will allow userspace to change the CPU affinity of the interrupt behind our back. Both of these could violate our synchronisation requirements with the core perf code, which relies upon strict CPU affinity and disabling of interrupts to guarantee mutual exclusion in some cases. As with the CPU PMU drivers, we should request the interrupt with IRQF_NOBALANCING and IRQF_NO_THREAD, to avoid these issues. Signed-off-by: Mark Rutland Acked-by: Pawel Moll Reviewed-by: Will Deacon Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 02f81e3..c826bb2 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -1496,8 +1496,9 @@ static int arm_ccn_probe(struct platform_device *pdev) /* Can set 'disable' bits, so can acknowledge interrupts */ writel(CCN_MN_ERRINT_STATUS__PMU_EVENTS__ENABLE, ccn->base + CCN_MN_ERRINT_STATUS); - err = devm_request_irq(ccn->dev, irq, arm_ccn_irq_handler, 0, - dev_name(ccn->dev), ccn); + err = devm_request_irq(ccn->dev, irq, arm_ccn_irq_handler, + IRQF_NOBALANCING | IRQF_NO_THREAD, + dev_name(ccn->dev), ccn); if (err) return err; -- cgit v0.10.2 From 5b1e01f3ce15d3a8f2af5d38cc31f0d5c3c11dae Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Thu, 11 Aug 2016 10:50:42 +0100 Subject: bus: arm-ccn: fix hrtimer registration The CCN PMU driver has a single hrtimer, used to simulate a periodic interrupt on systems where the overflow interrupt is not possible to use. The hrtimer is started when any event is started, and cancelled when any event is stopped. Thus, stopping a single event is sufficient to disable to hrtimer, and overflows (of other events) may be lost. To avoid this, this patch reworks the hrtimer start/cancel to only occur when the first event is added to a PMU, and the last event removed, making use of the existing bitmap counting active events. Signed-off-by: Mark Rutland Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index c826bb2..12c1fd1 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -940,15 +940,6 @@ static void arm_ccn_pmu_event_start(struct perf_event *event, int flags) arm_ccn_pmu_read_counter(ccn, hw->idx)); hw->state = 0; - /* - * Pin the timer, so that the overflows are handled by the chosen - * event->cpu (this is the same one as presented in "cpumask" - * attribute). - */ - if (!ccn->irq) - hrtimer_start(&ccn->dt.hrtimer, arm_ccn_pmu_timer_period(), - HRTIMER_MODE_REL_PINNED); - /* Set the DT bus input, engaging the counter */ arm_ccn_pmu_xp_dt_config(event, 1); } @@ -962,9 +953,6 @@ static void arm_ccn_pmu_event_stop(struct perf_event *event, int flags) /* Disable counting, setting the DT bus to pass-through mode */ arm_ccn_pmu_xp_dt_config(event, 0); - if (!ccn->irq) - hrtimer_cancel(&ccn->dt.hrtimer); - /* Let the DT bus drain */ timeout = arm_ccn_pmu_read_counter(ccn, CCN_IDX_PMU_CYCLE_COUNTER) + ccn->num_xps; @@ -1122,15 +1110,31 @@ static void arm_ccn_pmu_event_config(struct perf_event *event) spin_unlock(&ccn->dt.config_lock); } +static int arm_ccn_pmu_active_counters(struct arm_ccn *ccn) +{ + return bitmap_weight(ccn->dt.pmu_counters_mask, + CCN_NUM_PMU_EVENT_COUNTERS + 1); +} + static int arm_ccn_pmu_event_add(struct perf_event *event, int flags) { int err; struct hw_perf_event *hw = &event->hw; + struct arm_ccn *ccn = pmu_to_arm_ccn(event->pmu); err = arm_ccn_pmu_event_alloc(event); if (err) return err; + /* + * Pin the timer, so that the overflows are handled by the chosen + * event->cpu (this is the same one as presented in "cpumask" + * attribute). + */ + if (!ccn->irq && arm_ccn_pmu_active_counters(ccn) == 1) + hrtimer_start(&ccn->dt.hrtimer, arm_ccn_pmu_timer_period(), + HRTIMER_MODE_REL_PINNED); + arm_ccn_pmu_event_config(event); hw->state = PERF_HES_STOPPED; @@ -1143,9 +1147,14 @@ static int arm_ccn_pmu_event_add(struct perf_event *event, int flags) static void arm_ccn_pmu_event_del(struct perf_event *event, int flags) { + struct arm_ccn *ccn = pmu_to_arm_ccn(event->pmu); + arm_ccn_pmu_event_stop(event, PERF_EF_UPDATE); arm_ccn_pmu_event_release(event); + + if (!ccn->irq && arm_ccn_pmu_active_counters(ccn) == 0) + hrtimer_cancel(&ccn->dt.hrtimer); } static void arm_ccn_pmu_event_read(struct perf_event *event) -- cgit v0.10.2 From d662ed2e50c9dab1d4c25e80fa3e01ebe257bd65 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Thu, 11 Aug 2016 10:50:43 +0100 Subject: bus: arm-ccn: make event groups reliable The CCN PMU driver leaves the counting logic always enabled, and thus events are enabled while groups are manipulated. As each event is stopped and read individually, this leads to arbitrary skew across event groups, which can be seen if counting several identical events. To avoid this, implement pmu_{enable,disable} callbacks to stop and start all counters atomically around event manipulation. As the counters are now stopped, we cannot poll the cycle counter to wait for events to drain from the bus. However, as the counters are stopped and the events will not be read regardless, we can simply allow the bus to drain naturally. Signed-off-by: Mark Rutland Signed-off-by: Pawel Moll diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 12c1fd1..884c030 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -946,20 +946,11 @@ static void arm_ccn_pmu_event_start(struct perf_event *event, int flags) static void arm_ccn_pmu_event_stop(struct perf_event *event, int flags) { - struct arm_ccn *ccn = pmu_to_arm_ccn(event->pmu); struct hw_perf_event *hw = &event->hw; - u64 timeout; /* Disable counting, setting the DT bus to pass-through mode */ arm_ccn_pmu_xp_dt_config(event, 0); - /* Let the DT bus drain */ - timeout = arm_ccn_pmu_read_counter(ccn, CCN_IDX_PMU_CYCLE_COUNTER) + - ccn->num_xps; - while (arm_ccn_pmu_read_counter(ccn, CCN_IDX_PMU_CYCLE_COUNTER) < - timeout) - cpu_relax(); - if (flags & PERF_EF_UPDATE) arm_ccn_pmu_event_update(event); @@ -1162,6 +1153,24 @@ static void arm_ccn_pmu_event_read(struct perf_event *event) arm_ccn_pmu_event_update(event); } +static void arm_ccn_pmu_enable(struct pmu *pmu) +{ + struct arm_ccn *ccn = pmu_to_arm_ccn(pmu); + + u32 val = readl(ccn->dt.base + CCN_DT_PMCR); + val |= CCN_DT_PMCR__PMU_EN; + writel(val, ccn->dt.base + CCN_DT_PMCR); +} + +static void arm_ccn_pmu_disable(struct pmu *pmu) +{ + struct arm_ccn *ccn = pmu_to_arm_ccn(pmu); + + u32 val = readl(ccn->dt.base + CCN_DT_PMCR); + val &= ~CCN_DT_PMCR__PMU_EN; + writel(val, ccn->dt.base + CCN_DT_PMCR); +} + static irqreturn_t arm_ccn_pmu_overflow_handler(struct arm_ccn_dt *dt) { u32 pmovsr = readl(dt->base + CCN_DT_PMOVSR); @@ -1284,6 +1293,8 @@ static int arm_ccn_pmu_init(struct arm_ccn *ccn) .start = arm_ccn_pmu_event_start, .stop = arm_ccn_pmu_event_stop, .read = arm_ccn_pmu_event_read, + .pmu_enable = arm_ccn_pmu_enable, + .pmu_disable = arm_ccn_pmu_disable, }; /* No overflow interrupt? Have to use a timer instead. */ -- cgit v0.10.2 From a778937888867aac17a33887d1c429120790fbc2 Mon Sep 17 00:00:00 2001 From: Simon Baatz Date: Fri, 12 Aug 2016 19:12:50 +0200 Subject: ARM: kirkwood: ib62x0: fix size of u-boot environment partition Commit 148c274ea644 ("ARM: kirkwood: ib62x0: add u-boot environment partition") split the "u-boot" partition into "u-boot" and "u-boot environment". However, instead of the size of the environment, an offset was given, resulting in overlapping partitions. Signed-off-by: Simon Baatz Fixes: 148c274ea644 ("ARM: kirkwood: ib62x0: add u-boot environment partition") Cc: Jason Cooper Cc: Andrew Lunn Cc: Gregory Clement Cc: Sebastian Hesselbarth Cc: Luka Perkov Cc: stable@vger.kernel.org # 3.13+ Reviewed-by: Andrew Lunn Signed-off-by: Gregory CLEMENT diff --git a/arch/arm/boot/dts/kirkwood-ib62x0.dts b/arch/arm/boot/dts/kirkwood-ib62x0.dts index ef84d86..5bf6289 100644 --- a/arch/arm/boot/dts/kirkwood-ib62x0.dts +++ b/arch/arm/boot/dts/kirkwood-ib62x0.dts @@ -113,7 +113,7 @@ partition@e0000 { label = "u-boot environment"; - reg = <0xe0000 0x100000>; + reg = <0xe0000 0x20000>; }; partition@100000 { -- cgit v0.10.2 From c721da1d05760ad0b4e7670896dae31b6b07d8d6 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Mon, 22 Aug 2016 18:09:36 +0200 Subject: ARM: dts: kirkwood: Fix PCIe label on OpenRD While converting PCIe node on kirkwood by using label, the following commit eb13cf8345e9 ("ARM: dts: kirkwood: Fixup pcie DT warnings") introduced a regression on the OpenRD boards: the PCIe didn't work anymore. As reported by Aaro Koskinen, the display/framebuffer was lost. This commit adds the forgotten label. Reported-by: Aaro Koskinen Tested-by: Aaro Koskinen Fixes: eb13cf8345e9 ("ARM: dts: kirkwood: Fixup pcie DT warnings") Cc: stable@vger.kernel.org Reviewed-by: Andrew Lunn Signed-off-by: Gregory CLEMENT diff --git a/arch/arm/boot/dts/kirkwood-openrd.dtsi b/arch/arm/boot/dts/kirkwood-openrd.dtsi index e4ecab1..7175511 100644 --- a/arch/arm/boot/dts/kirkwood-openrd.dtsi +++ b/arch/arm/boot/dts/kirkwood-openrd.dtsi @@ -116,6 +116,10 @@ }; }; +&pciec { + status = "okay"; +}; + &pcie0 { status = "okay"; }; -- cgit v0.10.2 From 699e36e5b8e9f77b2be4c23f0b309e53be4b2880 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Tue, 23 Aug 2016 10:44:02 +0200 Subject: clocksource/drivers/timer-atmel-pit: Enable mck clock mck is needed to get the PIT working. Explicitly prepare_enable it instead of assuming it is enabled. This solves an issue where the system is freezing when the ETM/ETB drivers are enabled. Reported-by: Olivier Schonken Reviewed-by: Boris Brezillon Acked-by: Nicolas Ferre Signed-off-by: Alexandre Belloni Signed-off-by: Daniel Lezcano diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c index 1ffac0c..3494bc5 100644 --- a/drivers/clocksource/timer-atmel-pit.c +++ b/drivers/clocksource/timer-atmel-pit.c @@ -261,6 +261,12 @@ static int __init at91sam926x_pit_dt_init(struct device_node *node) return PTR_ERR(data->mck); } + ret = clk_prepare_enable(data->mck); + if (ret) { + pr_err("Unable to enable mck\n"); + return ret; + } + /* Get the interrupts property */ data->irq = irq_of_parse_and_map(node, 0); if (!data->irq) { -- cgit v0.10.2 From 4d0e701659aa869a445823149e172e23faa6edac Mon Sep 17 00:00:00 2001 From: Marcin Nowakowski Date: Wed, 17 Aug 2016 12:22:33 +0200 Subject: drivers/clocksource/pistachio: Fix memory corruption in init Driver init code incorrectly uses the block base address and as a result clears clocksource structure's fields instead of the hardware registers. Commit 09a998201649 ("timekeeping: Lift clocksource cacheline restriction") has changed the offsets within pistachio_clocksource structure and what has previously gone unnoticed now leads to a kernel panic during boot. Signed-off-by: Marcin Nowakowski Signed-off-by: Daniel Lezcano diff --git a/drivers/clocksource/time-pistachio.c b/drivers/clocksource/time-pistachio.c index a7d9a08..a8e6c7d 100644 --- a/drivers/clocksource/time-pistachio.c +++ b/drivers/clocksource/time-pistachio.c @@ -202,10 +202,10 @@ static int __init pistachio_clksrc_of_init(struct device_node *node) rate = clk_get_rate(fast_clk); /* Disable irq's for clocksource usage */ - gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 0); - gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 1); - gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 2); - gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 3); + gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 0); + gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 1); + gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 2); + gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 3); /* Enable timer block */ writel(TIMER_ME_GLOBAL, pcs_gpt.base); -- cgit v0.10.2 From b53e7d000d9e6e9fd2c6eb6b82d2783c67fd599e Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Thu, 25 Aug 2016 14:26:59 +0800 Subject: clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function The bootloader (U-boot) sometimes uses this timer for various delays. It uses it as a ongoing counter, and does comparisons on the current counter value. The timer counter is never stopped. In some cases when the user interacts with the bootloader, or lets it idle for some time before loading Linux, the timer may expire, and an interrupt will be pending. This results in an unexpected interrupt when the timer interrupt is enabled by the kernel, at which point the event_handler isn't set yet. This results in a NULL pointer dereference exception, panic, and no way to reboot. Clear any pending interrupts after we stop the timer in the probe function to avoid this. Cc: stable@vger.kernel.org Signed-off-by: Chen-Yu Tsai Signed-off-by: Daniel Lezcano Acked-by: Maxime Ripard diff --git a/drivers/clocksource/sun4i_timer.c b/drivers/clocksource/sun4i_timer.c index 97669ee..c83452c 100644 --- a/drivers/clocksource/sun4i_timer.c +++ b/drivers/clocksource/sun4i_timer.c @@ -123,12 +123,16 @@ static struct clock_event_device sun4i_clockevent = { .set_next_event = sun4i_clkevt_next_event, }; +static void sun4i_timer_clear_interrupt(void) +{ + writel(TIMER_IRQ_EN(0), timer_base + TIMER_IRQ_ST_REG); +} static irqreturn_t sun4i_timer_interrupt(int irq, void *dev_id) { struct clock_event_device *evt = (struct clock_event_device *)dev_id; - writel(0x1, timer_base + TIMER_IRQ_ST_REG); + sun4i_timer_clear_interrupt(); evt->event_handler(evt); return IRQ_HANDLED; @@ -208,6 +212,9 @@ static int __init sun4i_timer_init(struct device_node *node) /* Make sure timer is stopped before playing with interrupts */ sun4i_clkevt_time_stop(0); + /* clear timer0 interrupt */ + sun4i_timer_clear_interrupt(); + sun4i_clockevent.cpumask = cpu_possible_mask; sun4i_clockevent.irq = irq; -- cgit v0.10.2 From 866e0f4d73390ee6f5cd68aa92cf74eef3a2b0f2 Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Thu, 25 Aug 2016 11:52:47 -0500 Subject: i40iw: Update hw_iwarp_state Update iwqp->hw_iwarp_state to reflect the new state of the CQP modify QP operation. This avoids reissuing a CQP operation to modify a QP to a state that it is already in. Fixes: 4e9042e647ff ("i40iw: add hw and utils files") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_hw.c b/drivers/infiniband/hw/i40iw/i40iw_hw.c index 3ee0cad..0c92a40 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_hw.c +++ b/drivers/infiniband/hw/i40iw/i40iw_hw.c @@ -265,6 +265,7 @@ void i40iw_next_iw_state(struct i40iw_qp *iwqp, info.dont_send_fin = false; if (iwqp->sc_qp.term_flags && (state == I40IW_QP_STATE_ERROR)) info.reset_tcp_conn = true; + iwqp->hw_iwarp_state = state; i40iw_hw_modify_qp(iwqp->iwdev, iwqp, &info, 0); } -- cgit v0.10.2 From b71121b4b70a995c0b794026e84c880c4f26c361 Mon Sep 17 00:00:00 2001 From: Shiraz Saleem Date: Thu, 25 Aug 2016 11:53:24 -0500 Subject: i40iw: Receive notification events correctly Device notifications are not received after the first interface is closed; since there is an unregister for notifications on every interface close. Correct this by unregistering for device notifications only when the last interface is closed. Also, make all operations on the i40iw_notifiers_registered atomic as it can be read/modified concurrently. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c index 0cbbe40..445e230 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_main.c +++ b/drivers/infiniband/hw/i40iw/i40iw_main.c @@ -100,7 +100,7 @@ static struct notifier_block i40iw_net_notifier = { .notifier_call = i40iw_net_event }; -static int i40iw_notifiers_registered; +static atomic_t i40iw_notifiers_registered; /** * i40iw_find_i40e_handler - find a handler given a client info @@ -1342,12 +1342,11 @@ exit: */ static void i40iw_register_notifiers(void) { - if (!i40iw_notifiers_registered) { + if (atomic_inc_return(&i40iw_notifiers_registered) == 1) { register_inetaddr_notifier(&i40iw_inetaddr_notifier); register_inet6addr_notifier(&i40iw_inetaddr6_notifier); register_netevent_notifier(&i40iw_net_notifier); } - i40iw_notifiers_registered++; } /** @@ -1429,8 +1428,7 @@ static void i40iw_deinit_device(struct i40iw_device *iwdev, bool reset, bool del i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx); /* fallthrough */ case INET_NOTIFIER: - if (i40iw_notifiers_registered > 0) { - i40iw_notifiers_registered--; + if (!atomic_dec_return(&i40iw_notifiers_registered)) { unregister_netevent_notifier(&i40iw_net_notifier); unregister_inetaddr_notifier(&i40iw_inetaddr_notifier); unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier); -- cgit v0.10.2 From 61a28d2b690a8b6c383a075a12d62d711850f9d7 Mon Sep 17 00:00:00 2001 From: Christophe Jaillet Date: Fri, 26 Aug 2016 06:49:25 +0200 Subject: IB/hfi1: Clean up type used and casting In all other places in this file where 'find_first_bit' is called, port_num is defined as a 'u8' and no casting is done. Do the same here in order to be more consistent. Signed-off-by: Christophe JAILLET Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c index 39e42c3..9912d2c 100644 --- a/drivers/infiniband/hw/hfi1/mad.c +++ b/drivers/infiniband/hw/hfi1/mad.c @@ -2604,7 +2604,7 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp, u8 lq, num_vls; u8 res_lli, res_ler; u64 port_mask; - unsigned long port_num; + u8 port_num; unsigned long vl; u32 vl_select_mask; int vfi; @@ -2640,7 +2640,7 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp, port_num = find_first_bit((unsigned long *)&port_mask, sizeof(port_mask)); - if ((u8)port_num != port) { + if (port_num != port) { pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; return reply((struct ib_mad_hdr *)pmp); } -- cgit v0.10.2 From da60626e7d02a4f385cae80e450afc8b07035368 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 19 Aug 2016 16:34:45 +0100 Subject: ARM: sa1100: clear reset status prior to reboot Clear the current reset status prior to rebooting the platform. This adds the bit missing from 04fef228fb00 ("[ARM] pxa: introduce reset_status and clear_reset_status for driver's usage"). Fixes: 04fef228fb00 ("[ARM] pxa: introduce reset_status and clear_reset_status for driver's usage") Signed-off-by: Russell King diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 2e2c35b..3e09bed 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -34,6 +34,7 @@ #include #include +#include #include "generic.h" #include @@ -95,6 +96,8 @@ static void sa1100_power_off(void) void sa11x0_restart(enum reboot_mode mode, const char *cmd) { + clear_reset_status(RESET_STATUS_ALL); + if (mode == REBOOT_SOFT) { /* Jump into ROM at address 0 */ soft_restart(0); -- cgit v0.10.2 From 079d37df3397d48aab0f014986c1b0a1ca6256aa Mon Sep 17 00:00:00 2001 From: Eric Ren Date: Thu, 25 Aug 2016 17:20:59 +0800 Subject: dlm: fix malfunction of dlm_tool caused by debugfs changes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With the current kernel, `dlm_tool lockdebug` fails as below: "dlm_tool lockdebug ED0BD86DCE724393918A1AE8FDBF1EE3 can't open /sys/kernel/debug/dlm/ED0BD86DCE724393918A1AE8FDBF1EE3: Operation not permitted" This is because table_open() depends on file->f_op to tell which seq_file ops should be passed down. But, the original file ops in file->f_op is replaced by "debugfs_full_proxy_file_operations" with commit 49d200deaa68 ("debugfs: prevent access to removed files' private data"). Currently, I can think up 2 solutions: 1st, replace debugfs_create_file() with debugfs_create_file_unsafe(); 2nd, make different table_open#() accordingly. The 1st one is neat, but I don't thoroughly understand its risk. Maybe someone has a better one. Signed-off-by: Eric Ren Signed-off-by: David Teigland diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index eea6491..466f7d6 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -607,20 +607,54 @@ static const struct file_operations format2_fops; static const struct file_operations format3_fops; static const struct file_operations format4_fops; -static int table_open(struct inode *inode, struct file *file) +static int table_open1(struct inode *inode, struct file *file) { struct seq_file *seq; - int ret = -1; + int ret; - if (file->f_op == &format1_fops) - ret = seq_open(file, &format1_seq_ops); - else if (file->f_op == &format2_fops) - ret = seq_open(file, &format2_seq_ops); - else if (file->f_op == &format3_fops) - ret = seq_open(file, &format3_seq_ops); - else if (file->f_op == &format4_fops) - ret = seq_open(file, &format4_seq_ops); + ret = seq_open(file, &format1_seq_ops); + if (ret) + return ret; + + seq = file->private_data; + seq->private = inode->i_private; /* the dlm_ls */ + return 0; +} + +static int table_open2(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + int ret; + + ret = seq_open(file, &format2_seq_ops); + if (ret) + return ret; + + seq = file->private_data; + seq->private = inode->i_private; /* the dlm_ls */ + return 0; +} + +static int table_open3(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + int ret; + + ret = seq_open(file, &format3_seq_ops); + if (ret) + return ret; + + seq = file->private_data; + seq->private = inode->i_private; /* the dlm_ls */ + return 0; +} + +static int table_open4(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + int ret; + ret = seq_open(file, &format4_seq_ops); if (ret) return ret; @@ -631,7 +665,7 @@ static int table_open(struct inode *inode, struct file *file) static const struct file_operations format1_fops = { .owner = THIS_MODULE, - .open = table_open, + .open = table_open1, .read = seq_read, .llseek = seq_lseek, .release = seq_release @@ -639,7 +673,7 @@ static const struct file_operations format1_fops = { static const struct file_operations format2_fops = { .owner = THIS_MODULE, - .open = table_open, + .open = table_open2, .read = seq_read, .llseek = seq_lseek, .release = seq_release @@ -647,7 +681,7 @@ static const struct file_operations format2_fops = { static const struct file_operations format3_fops = { .owner = THIS_MODULE, - .open = table_open, + .open = table_open3, .read = seq_read, .llseek = seq_lseek, .release = seq_release @@ -655,7 +689,7 @@ static const struct file_operations format3_fops = { static const struct file_operations format4_fops = { .owner = THIS_MODULE, - .open = table_open, + .open = table_open4, .read = seq_read, .llseek = seq_lseek, .release = seq_release -- cgit v0.10.2 From c234af5875ffeab39d5a2c4230a477a35987a484 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 25 Aug 2016 07:51:10 +0100 Subject: net: hns: dereference ppe_cb->ppe_common_cb if it is non-null ppe_cb->ppe_common_cb is being dereferenced before a null check is being made on it. If ppe_cb->ppe_common_cb is null then we end up with a null pointer dereference when assigning dsaf_dev. Fix this by moving the initialisation of dsaf_dev once we know ppe_cb->ppe_common_cb is OK to dereference. Signed-off-by: Colin Ian King Acked-by: Yisen Zhuang Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c index ff8b6a4..6ea8722 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c @@ -328,9 +328,10 @@ static void hns_ppe_init_hw(struct hns_ppe_cb *ppe_cb) static void hns_ppe_uninit_hw(struct hns_ppe_cb *ppe_cb) { u32 port; - struct dsaf_device *dsaf_dev = ppe_cb->ppe_common_cb->dsaf_dev; if (ppe_cb->ppe_common_cb) { + struct dsaf_device *dsaf_dev = ppe_cb->ppe_common_cb->dsaf_dev; + port = ppe_cb->index; dsaf_dev->misc_op->ppe_srst(dsaf_dev, port, 0); } -- cgit v0.10.2 From c15e07b02bf0450bc8e60f2cc51cb42daa371417 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 25 Aug 2016 18:30:52 +0200 Subject: team: loadbalance: push lacpdus to exact delivery When team is in bridge and LACP is utilized, LACPDU packets are pushed to userspace using raw socket and there they are processed. However, since 8626c56c8279b, LACPDU skbs are dropped by bridge rx_handler so they never reach packet handlers in rx path. Fix this by explicity treat LACPDUs to be pushed to exact delivery in team rx_handler. Reported-by: Ido Schimmel Fixes: 8626c56c8279b ("bridge: fix potential use-after-free when hook returns QUEUE or STOLEN verdict") Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/team/team_mode_loadbalance.c b/drivers/net/team/team_mode_loadbalance.c index cdb19b3..b228bea 100644 --- a/drivers/net/team/team_mode_loadbalance.c +++ b/drivers/net/team/team_mode_loadbalance.c @@ -14,9 +14,23 @@ #include #include #include +#include #include #include +static rx_handler_result_t lb_receive(struct team *team, struct team_port *port, + struct sk_buff *skb) +{ + if (unlikely(skb->protocol == htons(ETH_P_SLOW))) { + /* LACPDU packets should go to exact delivery */ + const unsigned char *dest = eth_hdr(skb)->h_dest; + + if (is_link_local_ether_addr(dest) && dest[5] == 0x02) + return RX_HANDLER_EXACT; + } + return RX_HANDLER_ANOTHER; +} + struct lb_priv; typedef struct team_port *lb_select_tx_port_func_t(struct team *, @@ -652,6 +666,7 @@ static const struct team_mode_ops lb_mode_ops = { .port_enter = lb_port_enter, .port_leave = lb_port_leave, .port_disabled = lb_port_disabled, + .receive = lb_receive, .transmit = lb_transmit, }; -- cgit v0.10.2 From 101b29a204f87c99377faa53bd378f101ebb1824 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 25 Aug 2016 15:16:45 -0700 Subject: byteswap: don't use __builtin_bswap*() with sparse Although sparse declares __builtin_bswap*(), it can't actually do constant folding inside them (yet). As such, things like switch (protocol) { case htons(ETH_P_IP): break; } which we do all over the place cause sparse to warn that it expects a constant instead of a function call. Disable __HAVE_BUILTIN_BSWAP*__ if __CHECKER__ is defined to avoid this. Fixes: 7322dd755e7d ("byteswap: try to avoid __builtin_constant_p gcc bug") Link: http://lkml.kernel.org/r/1470914102-26389-1-git-send-email-johannes@sipsolutions.net Signed-off-by: Johannes Berg Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index e294939..8dbc892 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -242,7 +242,11 @@ */ #define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0) -#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP +/* + * sparse (__CHECKER__) pretends to be gcc, but can't do constant + * folding in __builtin_bswap*() (yet), so don't set these for it. + */ +#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) && !defined(__CHECKER__) #if GCC_VERSION >= 40400 #define __HAVE_BUILTIN_BSWAP32__ #define __HAVE_BUILTIN_BSWAP64__ @@ -250,7 +254,7 @@ #if GCC_VERSION >= 40800 #define __HAVE_BUILTIN_BSWAP16__ #endif -#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */ +#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */ #if GCC_VERSION >= 50000 #define KASAN_ABI_VERSION 4 -- cgit v0.10.2 From 8582fb59f7ee012f2b8118c2bb95168c1622a4c5 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 25 Aug 2016 15:16:48 -0700 Subject: get_maintainer: quiet noisy implicit -f vcs_file_exists checking Checking command line filenames that are outside the git tree can emit a noisy and confusing message. Quiet that message by redirecting stderr. Verify that the command was executed successfully. Fixes: 4cad35a7ca69 ("get_maintainer.pl: reduce need for command-line option -f") Link: http://lkml.kernel.org/r/1970a1d2fecb258e384e2e4fdaacdc9ccf3e30a4.1470955439.git.joe@perches.com Signed-off-by: Joe Perches Reported-by: Wolfram Sang Tested-by: Wolfram Sang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl index 49a00d5..aed4511 100755 --- a/scripts/get_maintainer.pl +++ b/scripts/get_maintainer.pl @@ -2136,9 +2136,11 @@ sub vcs_file_exists { my $cmd = $VCS_cmds{"file_exists_cmd"}; $cmd =~ s/(\$\w+)/$1/eeg; # interpolate $cmd - + $cmd .= " 2>&1"; $exists = &{$VCS_cmds{"execute_cmd"}}($cmd); + return 0 if ($? != 0); + return $exists; } -- cgit v0.10.2 From e7d316a02f683864a12389f8808570e37fb90aa3 Mon Sep 17 00:00:00 2001 From: Subash Abhinov Kasiviswanathan Date: Thu, 25 Aug 2016 15:16:51 -0700 Subject: sysctl: handle error writing UINT_MAX to u32 fields We have scripts which write to certain fields on 3.18 kernels but this seems to be failing on 4.4 kernels. An entry which we write to here is xfrm_aevent_rseqth which is u32. echo 4294967295 > /proc/sys/net/core/xfrm_aevent_rseqth Commit 230633d109e3 ("kernel/sysctl.c: detect overflows when converting to int") prevented writing to sysctl entries when integer overflow occurs. However, this does not apply to unsigned integers. Heinrich suggested that we introduce a new option to handle 64 bit limits and set min as 0 and max as UINT_MAX. This might not work as it leads to issues similar to __do_proc_doulongvec_minmax. Alternatively, we would need to change the datatype of the entry to 64 bit. static int __do_proc_doulongvec_minmax(void *data, struct ctl_table { i = (unsigned long *) data; //This cast is causing to read beyond the size of data (u32) vleft = table->maxlen / sizeof(unsigned long); //vleft is 0 because maxlen is sizeof(u32) which is lesser than sizeof(unsigned long) on x86_64. Introduce a new proc handler proc_douintvec. Individual proc entries will need to be updated to use the new handler. [akpm@linux-foundation.org: coding-style fixes] Fixes: 230633d109e3 ("kernel/sysctl.c:detect overflows when converting to int") Link: http://lkml.kernel.org/r/1471479806-5252-1-git-send-email-subashab@codeaurora.org Signed-off-by: Subash Abhinov Kasiviswanathan Cc: Heinrich Schuchardt Cc: Kees Cook Cc: "David S. Miller" Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 697e160..a4f7203 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -42,6 +42,8 @@ extern int proc_dostring(struct ctl_table *, int, void __user *, size_t *, loff_t *); extern int proc_dointvec(struct ctl_table *, int, void __user *, size_t *, loff_t *); +extern int proc_douintvec(struct ctl_table *, int, + void __user *, size_t *, loff_t *); extern int proc_dointvec_minmax(struct ctl_table *, int, void __user *, size_t *, loff_t *); extern int proc_dointvec_jiffies(struct ctl_table *, int, diff --git a/kernel/sysctl.c b/kernel/sysctl.c index b43d0b2..a13bbda 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2140,6 +2140,21 @@ static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp, return 0; } +static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp, + int *valp, + int write, void *data) +{ + if (write) { + if (*negp) + return -EINVAL; + *valp = *lvalp; + } else { + unsigned int val = *valp; + *lvalp = (unsigned long)val; + } + return 0; +} + static const char proc_wspace_sep[] = { ' ', '\t', '\n' }; static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, @@ -2259,8 +2274,27 @@ static int do_proc_dointvec(struct ctl_table *table, int write, int proc_dointvec(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - return do_proc_dointvec(table,write,buffer,lenp,ppos, - NULL,NULL); + return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL); +} + +/** + * proc_douintvec - read a vector of unsigned integers + * @table: the sysctl table + * @write: %TRUE if this is a write to the sysctl file + * @buffer: the user buffer + * @lenp: the size of the user buffer + * @ppos: file position + * + * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer + * values from/to the user buffer, treated as an ASCII string. + * + * Returns 0 on success. + */ +int proc_douintvec(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return do_proc_dointvec(table, write, buffer, lenp, ppos, + do_proc_douintvec_conv, NULL); } /* @@ -2858,6 +2892,12 @@ int proc_dointvec(struct ctl_table *table, int write, return -ENOSYS; } +int proc_douintvec(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return -ENOSYS; +} + int proc_dointvec_minmax(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { @@ -2903,6 +2943,7 @@ int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, * exception granted :-) */ EXPORT_SYMBOL(proc_dointvec); +EXPORT_SYMBOL(proc_douintvec); EXPORT_SYMBOL(proc_dointvec_jiffies); EXPORT_SYMBOL(proc_dointvec_minmax); EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); -- cgit v0.10.2 From 804dd150468cfd920d92d4b3cf00536fedef3902 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 25 Aug 2016 15:16:57 -0700 Subject: soft_dirty: fix soft_dirty during THP split While adding proper userfaultfd_wp support with bits in pagetable and swap entry to avoid false positives WP userfaults through swap/fork/ KSM/etc, I've been adding a framework that mostly mirrors soft dirty. So I noticed in one place I had to add uffd_wp support to the pagetables that wasn't covered by soft_dirty and I think it should have. Example: in the THP migration code migrate_misplaced_transhuge_page() pmd_mkdirty is called unconditionally after mk_huge_pmd. entry = mk_huge_pmd(new_page, vma->vm_page_prot); entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma); That sets soft dirty too (it's a false positive for soft dirty, the soft dirty bit could be more finegrained and transfer the bit like uffd_wp will do.. pmd/pte_uffd_wp() enforces the invariant that when it's set pmd/pte_write is not set). However in the THP split there's no unconditional pmd_mkdirty after mk_huge_pmd and pte_swp_mksoft_dirty isn't called after the migration entry is created. The code sets the dirty bit in the struct page instead of setting it in the pagetable (which is fully equivalent as far as the real dirty bit is concerned, as the whole point of pagetable bits is to be eventually flushed out of to the page, but that is not equivalent for the soft-dirty bit that gets lost in translation). This was found by code review only and totally untested as I'm working to actually replace soft dirty and I don't have time to test potential soft dirty bugfixes as well :). Transfer the soft_dirty from pmd to pte during THP splits. This fix avoids losing the soft_dirty bit and avoids userland memory corruption in the checkpoint. Fixes: eef1b3ba053aa6 ("thp: implement split_huge_pmd()") Link: http://lkml.kernel.org/r/1471610515-30229-2-git-send-email-aarcange@redhat.com Signed-off-by: Andrea Arcangeli Acked-by: Pavel Emelyanov Cc: "Kirill A. Shutemov" Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 2373f0a..2db2112 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1512,7 +1512,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, struct page *page; pgtable_t pgtable; pmd_t _pmd; - bool young, write, dirty; + bool young, write, dirty, soft_dirty; unsigned long addr; int i; @@ -1546,6 +1546,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, write = pmd_write(*pmd); young = pmd_young(*pmd); dirty = pmd_dirty(*pmd); + soft_dirty = pmd_soft_dirty(*pmd); pmdp_huge_split_prepare(vma, haddr, pmd); pgtable = pgtable_trans_huge_withdraw(mm, pmd); @@ -1562,6 +1563,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, swp_entry_t swp_entry; swp_entry = make_migration_entry(page + i, write); entry = swp_entry_to_pte(swp_entry); + if (soft_dirty) + entry = pte_swp_mksoft_dirty(entry); } else { entry = mk_pte(page + i, vma->vm_page_prot); entry = maybe_mkwrite(entry, vma); @@ -1569,6 +1572,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, entry = pte_wrprotect(entry); if (!young) entry = pte_mkold(entry); + if (soft_dirty) + entry = pte_mksoft_dirty(entry); } if (dirty) SetPageDirty(page + i); -- cgit v0.10.2 From ae6c33ba6e37eea3012fe2640b22400ef3f2d0f3 Mon Sep 17 00:00:00 2001 From: Nicolas Iooss Date: Thu, 25 Aug 2016 15:17:00 -0700 Subject: printk: fix parsing of "brl=" option Commit bbeddf52adc1 ("printk: move braille console support into separate braille.[ch] files") moved the parsing of braille-related options into _braille_console_setup(), changing the type of variable str from char* to char**. In this commit, memcmp(str, "brl,", 4) was correctly updated to memcmp(*str, "brl,", 4) but not memcmp(str, "brl=", 4). Update the code to make "brl=" option work again and replace memcmp() with strncmp() to make the compiler able to detect such an issue. Fixes: bbeddf52adc1 ("printk: move braille console support into separate braille.[ch] files") Link: http://lkml.kernel.org/r/20160823165700.28952-1-nicolas.iooss_linux@m4x.org Signed-off-by: Nicolas Iooss Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/printk/braille.c b/kernel/printk/braille.c index 276762f..d5760c4 100644 --- a/kernel/printk/braille.c +++ b/kernel/printk/braille.c @@ -9,10 +9,10 @@ char *_braille_console_setup(char **str, char **brl_options) { - if (!memcmp(*str, "brl,", 4)) { + if (!strncmp(*str, "brl,", 4)) { *brl_options = ""; *str += 4; - } else if (!memcmp(str, "brl=", 4)) { + } else if (!strncmp(*str, "brl=", 4)) { *brl_options = *str + 4; *str = strchr(*brl_options, ','); if (!*str) -- cgit v0.10.2 From a5ff1b34e16c203397542d98c49c5c7783193946 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 25 Aug 2016 15:17:02 -0700 Subject: treewide: replace config_enabled() with IS_ENABLED() (2nd round) Commit 97f2645f358b ("tree-wide: replace config_enabled() with IS_ENABLED()") mostly killed config_enabled(), but some new users have appeared for v4.8-rc1. They are all used for a boolean option, so can be replaced with IS_ENABLED() safely. Link: http://lkml.kernel.org/r/1471970749-24867-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada Acked-by: Kees Cook Acked-by: Peter Oberparleiter Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Ralf Baechle Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h index ea0cd97..5f98759 100644 --- a/arch/mips/include/asm/page.h +++ b/arch/mips/include/asm/page.h @@ -164,7 +164,7 @@ typedef struct { unsigned long pgprot; } pgprot_t; */ static inline unsigned long ___pa(unsigned long x) { - if (config_enabled(CONFIG_64BIT)) { + if (IS_ENABLED(CONFIG_64BIT)) { /* * For MIPS64 the virtual address may either be in one of * the compatibility segements ckseg0 or ckseg1, or it may @@ -173,7 +173,7 @@ static inline unsigned long ___pa(unsigned long x) return x < CKSEG0 ? XPHYSADDR(x) : CPHYSADDR(x); } - if (!config_enabled(CONFIG_EVA)) { + if (!IS_ENABLED(CONFIG_EVA)) { /* * We're using the standard MIPS32 legacy memory map, ie. * the address x is going to be in kseg0 or kseg1. We can diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index ba5f456..7f7ba5f2 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -204,11 +204,9 @@ static void __init conmode_default(void) #endif } } else if (MACHINE_IS_KVM) { - if (sclp.has_vt220 && - config_enabled(CONFIG_SCLP_VT220_CONSOLE)) + if (sclp.has_vt220 && IS_ENABLED(CONFIG_SCLP_VT220_CONSOLE)) SET_CONSOLE_VT220; - else if (sclp.has_linemode && - config_enabled(CONFIG_SCLP_CONSOLE)) + else if (sclp.has_linemode && IS_ENABLED(CONFIG_SCLP_CONSOLE)) SET_CONSOLE_SCLP; else SET_CONSOLE_HVC; diff --git a/arch/x86/mm/kaslr.c b/arch/x86/mm/kaslr.c index ec8654f..bda8d5e 100644 --- a/arch/x86/mm/kaslr.c +++ b/arch/x86/mm/kaslr.c @@ -77,7 +77,7 @@ static inline unsigned long get_padding(struct kaslr_memory_region *region) */ static inline bool kaslr_memory_enabled(void) { - return kaslr_enabled() && !config_enabled(CONFIG_KASAN); + return kaslr_enabled() && !IS_ENABLED(CONFIG_KASAN); } /* Initialize base and padding for each memory region randomized with KASLR */ -- cgit v0.10.2 From b32eaf71db6085f2ba54cf3ddf688bfc858219d0 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Thu, 25 Aug 2016 15:17:05 -0700 Subject: mm: clarify COMPACTION Kconfig text The current wording of the COMPACTION Kconfig help text doesn't emphasise that disabling COMPACTION might cripple the page allocator which relies on the compaction quite heavily for high order requests and an unexpected OOM can happen with the lack of compaction. Make sure we are vocal about that. Link: http://lkml.kernel.org/r/20160823091726.GK23577@dhcp22.suse.cz Signed-off-by: Michal Hocko Cc: Markus Trippelsdorf Cc: Mel Gorman Cc: Joonsoo Kim Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/Kconfig b/mm/Kconfig index 78a23c5..be0ee11 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -262,7 +262,14 @@ config COMPACTION select MIGRATION depends on MMU help - Allows the compaction of memory for the allocation of huge pages. + Compaction is the only memory management component to form + high order (larger physically contiguous) memory blocks + reliably. The page allocator relies on compaction heavily and + the lack of the feature can lead to unexpected OOM killer + invocations for high order memory requests. You shouldn't + disable this option unless there really is a strong reason for + it and then we would be really interested to hear about that at + linux-mm@kvack.org. # # support for page migration -- cgit v0.10.2 From 358c07fcc3b60ab08d77f1684de8bd81bcf49a1a Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 25 Aug 2016 15:17:08 -0700 Subject: mm: memcontrol: avoid unused function warning A bugfix in v4.8-rc2 introduced a harmless warning when CONFIG_MEMCG_SWAP is disabled but CONFIG_MEMCG is enabled: mm/memcontrol.c:4085:27: error: 'mem_cgroup_id_get_online' defined but not used [-Werror=unused-function] static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg) This moves the function inside of the #ifdef block that hides the calling function, to avoid the warning. Fixes: 1f47b61fb407 ("mm: memcontrol: fix swap counter leak on swapout from offline cgroup") Link: http://lkml.kernel.org/r/20160824113733.2776701-1-arnd@arndb.de Signed-off-by: Arnd Bergmann Acked-by: Michal Hocko Acked-by: Vladimir Davydov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2ff0289..9a6a51a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4082,24 +4082,6 @@ static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n) atomic_add(n, &memcg->id.ref); } -static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg) -{ - while (!atomic_inc_not_zero(&memcg->id.ref)) { - /* - * The root cgroup cannot be destroyed, so it's refcount must - * always be >= 1. - */ - if (WARN_ON_ONCE(memcg == root_mem_cgroup)) { - VM_BUG_ON(1); - break; - } - memcg = parent_mem_cgroup(memcg); - if (!memcg) - memcg = root_mem_cgroup; - } - return memcg; -} - static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n) { if (atomic_sub_and_test(n, &memcg->id.ref)) { @@ -5821,6 +5803,24 @@ static int __init mem_cgroup_init(void) subsys_initcall(mem_cgroup_init); #ifdef CONFIG_MEMCG_SWAP +static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg) +{ + while (!atomic_inc_not_zero(&memcg->id.ref)) { + /* + * The root cgroup cannot be destroyed, so it's refcount must + * always be >= 1. + */ + if (WARN_ON_ONCE(memcg == root_mem_cgroup)) { + VM_BUG_ON(1); + break; + } + memcg = parent_mem_cgroup(memcg); + if (!memcg) + memcg = root_mem_cgroup; + } + return memcg; +} + /** * mem_cgroup_swapout - transfer a memsw charge to swap * @page: page whose memsw charge to transfer -- cgit v0.10.2 From 088bf2ff5d12e2e32ee52a4024fec26e582f44d3 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Thu, 25 Aug 2016 15:17:11 -0700 Subject: fs/seq_file: fix out-of-bounds read seq_read() is a nasty piece of work, not to mention buggy. It has (I think) an old bug which allows unprivileged userspace to read beyond the end of m->buf. I was getting these: BUG: KASAN: slab-out-of-bounds in seq_read+0xcd2/0x1480 at addr ffff880116889880 Read of size 2713 by task trinity-c2/1329 CPU: 2 PID: 1329 Comm: trinity-c2 Not tainted 4.8.0-rc1+ #96 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014 Call Trace: kasan_object_err+0x1c/0x80 kasan_report_error+0x2cb/0x7e0 kasan_report+0x4e/0x80 check_memory_region+0x13e/0x1a0 kasan_check_read+0x11/0x20 seq_read+0xcd2/0x1480 proc_reg_read+0x10b/0x260 do_loop_readv_writev.part.5+0x140/0x2c0 do_readv_writev+0x589/0x860 vfs_readv+0x7b/0xd0 do_readv+0xd8/0x2c0 SyS_readv+0xb/0x10 do_syscall_64+0x1b3/0x4b0 entry_SYSCALL64_slow_path+0x25/0x25 Object at ffff880116889100, in cache kmalloc-4096 size: 4096 Allocated: PID = 1329 save_stack_trace+0x26/0x80 save_stack+0x46/0xd0 kasan_kmalloc+0xad/0xe0 __kmalloc+0x1aa/0x4a0 seq_buf_alloc+0x35/0x40 seq_read+0x7d8/0x1480 proc_reg_read+0x10b/0x260 do_loop_readv_writev.part.5+0x140/0x2c0 do_readv_writev+0x589/0x860 vfs_readv+0x7b/0xd0 do_readv+0xd8/0x2c0 SyS_readv+0xb/0x10 do_syscall_64+0x1b3/0x4b0 return_from_SYSCALL_64+0x0/0x6a Freed: PID = 0 (stack is not available) Memory state around the buggy address: ffff88011688a000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88011688a080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88011688a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88011688a180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88011688a200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Disabling lock debugging due to kernel taint This seems to be the same thing that Dave Jones was seeing here: https://lkml.org/lkml/2016/8/12/334 There are multiple issues here: 1) If we enter the function with a non-empty buffer, there is an attempt to flush it. But it was not clearing m->from after doing so, which means that if we try to do this flush twice in a row without any call to traverse() in between, we are going to be reading from the wrong place -- the splat above, fixed by this patch. 2) If there's a short write to userspace because of page faults, the buffer may already contain multiple lines (i.e. pos has advanced by more than 1), but we don't save the progress that was made so the next call will output what we've already returned previously. Since that is a much less serious issue (and I have a headache after staring at seq_read() for the past 8 hours), I'll leave that for now. Link: http://lkml.kernel.org/r/1471447270-32093-1-git-send-email-vegard.nossum@oracle.com Signed-off-by: Vegard Nossum Reported-by: Dave Jones Cc: Al Viro Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/fs/seq_file.c b/fs/seq_file.c index 19f532e..6dc4296 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -223,8 +223,10 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) size -= n; buf += n; copied += n; - if (!m->count) + if (!m->count) { + m->from = 0; m->index++; + } if (!size) goto Done; } -- cgit v0.10.2 From d0e5845561c238619de9f5b77e0d763f4c331ca5 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 25 Aug 2016 15:17:14 -0700 Subject: dax: fix device-dax region base The data offset for a dax region needs to account for a reservation in the resource range. Otherwise, device-dax is allowing mappings directly into the memmap or device-info-block area with crash signatures like the following: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: get_zone_device_page+0x11/0x30 Call Trace: follow_devmap_pmd+0x298/0x2c0 follow_page_mask+0x275/0x530 __get_user_pages+0xe3/0x750 __gfn_to_pfn_memslot+0x1b2/0x450 [kvm] tdp_page_fault+0x130/0x280 [kvm] kvm_mmu_page_fault+0x5f/0xf0 [kvm] handle_ept_violation+0x94/0x180 [kvm_intel] vmx_handle_exit+0x1d3/0x1440 [kvm_intel] kvm_arch_vcpu_ioctl_run+0x81d/0x16a0 [kvm] kvm_vcpu_ioctl+0x33c/0x620 [kvm] do_vfs_ioctl+0xa2/0x5d0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x1a/0xa4 Fixes: ab68f2622136 ("/dev/dax, pmem: direct access to persistent memory") Link: http://lkml.kernel.org/r/147205536732.1606.8994275381938837346.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams Reported-by: Abhilash Kumar Mulumudi Reported-by: Toshi Kani Tested-by: Toshi Kani Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/dax/pmem.c b/drivers/dax/pmem.c index dfb1685..1f01e98 100644 --- a/drivers/dax/pmem.c +++ b/drivers/dax/pmem.c @@ -116,6 +116,9 @@ static int dax_pmem_probe(struct device *dev) if (rc) return rc; + /* adjust the dax_region resource to the start of data */ + res.start += le64_to_cpu(pfn_sb->dataoff); + nd_region = to_nd_region(dev->parent); dax_region = alloc_dax_region(dev, nd_region->id, &res, le32_to_cpu(pfn_sb->align), addr, PFN_DEV|PFN_MAP); -- cgit v0.10.2 From 11bd969fdefea3ac0cb9791224f1e09784e21e58 Mon Sep 17 00:00:00 2001 From: Ross Zwisler Date: Thu, 25 Aug 2016 15:17:17 -0700 Subject: mm: silently skip readahead for DAX inodes For DAX inodes we need to be careful to never have page cache pages in the mapping->page_tree. This radix tree should be composed only of DAX exceptional entries and zero pages. ltp's readahead02 test was triggering a warning because we were trying to insert a DAX exceptional entry but found that a page cache page had already been inserted into the tree. This page was being inserted into the radix tree in response to a readahead(2) call. Readahead doesn't make sense for DAX inodes, but we don't want it to report a failure either. Instead, we just return success and don't do any work. Link: http://lkml.kernel.org/r/20160824221429.21158-1-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler Reported-by: Jeff Moyer Cc: Dan Williams Cc: Dave Chinner Cc: Dave Hansen Cc: Jan Kara Cc: [4.5+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/readahead.c b/mm/readahead.c index 65ec288..c8a955b 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -544,6 +545,14 @@ do_readahead(struct address_space *mapping, struct file *filp, if (!mapping || !mapping->a_ops) return -EINVAL; + /* + * Readahead doesn't make sense for DAX inodes, but we don't want it + * to report a failure either. Instead, we just return success and + * don't do any work. + */ + if (dax_mapping(mapping)) + return 0; + return force_page_cache_readahead(mapping, filp, index, nr); } -- cgit v0.10.2 From e70c70c38d7a5ced76fc8b1c4a7ccee76e9c2911 Mon Sep 17 00:00:00 2001 From: Andrew Rybchenko Date: Fri, 26 Aug 2016 11:19:34 +0100 Subject: sfc: fix potential stack corruption from running past stat bitmask On 32-bit systems, mask is only an array of 3 longs, not 4, so don't try to write to mask[3]. Also include build-time checks in case the size of the bitmask changes. Fixes: 3c36a2aded8c ("sfc: display vadaptor statistics for all interfaces") Signed-off-by: Edward Cree Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index f658fee..e00a669 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -1517,13 +1517,14 @@ static void efx_ef10_get_stat_mask(struct efx_nic *efx, unsigned long *mask) } #if BITS_PER_LONG == 64 + BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 2); mask[0] = raw_mask[0]; mask[1] = raw_mask[1]; #else + BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 3); mask[0] = raw_mask[0] & 0xffffffff; mask[1] = raw_mask[0] >> 32; mask[2] = raw_mask[1] & 0xffffffff; - mask[3] = raw_mask[1] >> 32; #endif } -- cgit v0.10.2 From 9dbeea7f08f3784b152d9fb3b86beb34aad77c72 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 26 Aug 2016 08:51:39 -0700 Subject: rhashtable: fix a memory leak in alloc_bucket_locks() If vmalloc() was successful, do not attempt a kmalloc_array() Fixes: 4cf0b354d92e ("rhashtable: avoid large lock-array allocations") Reported-by: CAI Qian Signed-off-by: Eric Dumazet Cc: Florian Westphal Acked-by: Herbert Xu Tested-by: CAI Qian Signed-off-by: David S. Miller diff --git a/lib/rhashtable.c b/lib/rhashtable.c index 5ba520b..56054e5 100644 --- a/lib/rhashtable.c +++ b/lib/rhashtable.c @@ -77,17 +77,18 @@ static int alloc_bucket_locks(struct rhashtable *ht, struct bucket_table *tbl, size = min_t(unsigned int, size, tbl->size >> 1); if (sizeof(spinlock_t) != 0) { + tbl->locks = NULL; #ifdef CONFIG_NUMA if (size * sizeof(spinlock_t) > PAGE_SIZE && gfp == GFP_KERNEL) tbl->locks = vmalloc(size * sizeof(spinlock_t)); - else #endif if (gfp != GFP_KERNEL) gfp |= __GFP_NOWARN | __GFP_NORETRY; - tbl->locks = kmalloc_array(size, sizeof(spinlock_t), - gfp); + if (!tbl->locks) + tbl->locks = kmalloc_array(size, sizeof(spinlock_t), + gfp); if (!tbl->locks) return -ENOMEM; for (i = 0; i < size; i++) -- cgit v0.10.2 From f5b7b559e14881b27d76f9c97817ec82bfc48827 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 24 Aug 2016 12:25:56 +0300 Subject: nvme-rdma: Get rid of duplicate variable We already have need_inval in ib_mr, lets use that instead. Signed-off-by: Sagi Grimberg Reviewed-by: Christoph Hellwig diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index c133256..881ac28 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -77,7 +77,6 @@ struct nvme_rdma_request { u32 num_sge; int nents; bool inline_data; - bool need_inval; struct ib_reg_wr reg_wr; struct ib_cqe reg_cqe; struct nvme_rdma_queue *queue; @@ -286,7 +285,7 @@ static int nvme_rdma_reinit_request(void *data, struct request *rq) struct nvme_rdma_request *req = blk_mq_rq_to_pdu(rq); int ret = 0; - if (!req->need_inval) + if (!req->mr->need_inval) goto out; ib_dereg_mr(req->mr); @@ -298,7 +297,7 @@ static int nvme_rdma_reinit_request(void *data, struct request *rq) req->mr = NULL; } - req->need_inval = false; + req->mr->need_inval = false; out: return ret; @@ -850,7 +849,7 @@ static void nvme_rdma_unmap_data(struct nvme_rdma_queue *queue, if (!blk_rq_bytes(rq)) return; - if (req->need_inval) { + if (req->mr->need_inval) { res = nvme_rdma_inv_rkey(queue, req); if (res < 0) { dev_err(ctrl->ctrl.device, @@ -936,7 +935,7 @@ static int nvme_rdma_map_sg_fr(struct nvme_rdma_queue *queue, IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; - req->need_inval = true; + req->mr->need_inval = true; sg->addr = cpu_to_le64(req->mr->iova); put_unaligned_le24(req->mr->length, sg->length); @@ -959,7 +958,7 @@ static int nvme_rdma_map_data(struct nvme_rdma_queue *queue, req->num_sge = 1; req->inline_data = false; - req->need_inval = false; + req->mr->need_inval = false; c->common.flags |= NVME_CMD_SGL_METABUF; @@ -1146,7 +1145,7 @@ static int nvme_rdma_process_nvme_rsp(struct nvme_rdma_queue *queue, if ((wc->wc_flags & IB_WC_WITH_INVALIDATE) && wc->ex.invalidate_rkey == req->mr->rkey) - req->need_inval = false; + req->mr->need_inval = false; blk_mq_complete_request(rq, status); @@ -1476,7 +1475,7 @@ static int nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx, if (rq->cmd_type == REQ_TYPE_FS && req_op(rq) == REQ_OP_FLUSH) flush = true; ret = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge, - req->need_inval ? &req->reg_wr.wr : NULL, flush); + req->mr->need_inval ? &req->reg_wr.wr : NULL, flush); if (ret) { nvme_rdma_unmap_data(queue, rq); goto err; -- cgit v0.10.2 From 4d8c6a7946d53648d9ed0e3852a1c81ce07d40db Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Fri, 26 Aug 2016 00:37:52 +0300 Subject: nvme-rdma: Get rid of redundant defines Signed-off-by: Sagi Grimberg Reviewed-by: Christoph Hellwig diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 881ac28..ab545fb 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -43,10 +43,6 @@ #define NVME_RDMA_MAX_INLINE_SEGMENTS 1 -#define NVME_RDMA_MAX_PAGES_PER_MR 512 - -#define NVME_RDMA_DEF_RECONNECT_DELAY 20 - /* * We handle AEN commands ourselves and don't even let the * block layer know about them. -- cgit v0.10.2 From 89f82cbb0d5c0ab768c8d02914188aa2211cd2e3 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 22 Aug 2016 15:15:23 -0400 Subject: drm/msm: fix use of copy_from_user() while holding spinlock Use instead __copy_from_user_inatomic() and fallback to slow-path where we drop and re-aquire the lock in case of fault. Cc: stable@vger.kernel.org Reported-by: Vaishali Thakkar Signed-off-by: Rob Clark diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 9766f9a..408da40 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -64,6 +64,14 @@ void msm_gem_submit_free(struct msm_gem_submit *submit) kfree(submit); } +static inline unsigned long __must_check +copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) +{ + if (access_ok(VERIFY_READ, from, n)) + return __copy_from_user_inatomic(to, from, n); + return -EFAULT; +} + static int submit_lookup_objects(struct msm_gem_submit *submit, struct drm_msm_gem_submit *args, struct drm_file *file) { @@ -71,6 +79,7 @@ static int submit_lookup_objects(struct msm_gem_submit *submit, int ret = 0; spin_lock(&file->table_lock); + pagefault_disable(); for (i = 0; i < args->nr_bos; i++) { struct drm_msm_gem_submit_bo submit_bo; @@ -84,10 +93,15 @@ static int submit_lookup_objects(struct msm_gem_submit *submit, */ submit->bos[i].flags = 0; - ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo)); - if (ret) { - ret = -EFAULT; - goto out_unlock; + ret = copy_from_user_inatomic(&submit_bo, userptr, sizeof(submit_bo)); + if (unlikely(ret)) { + pagefault_enable(); + spin_unlock(&file->table_lock); + ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo)); + if (ret) + goto out; + spin_lock(&file->table_lock); + pagefault_disable(); } if (submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) { @@ -127,9 +141,12 @@ static int submit_lookup_objects(struct msm_gem_submit *submit, } out_unlock: - submit->nr_bos = i; + pagefault_enable(); spin_unlock(&file->table_lock); +out: + submit->nr_bos = i; + return ret; } -- cgit v0.10.2 From d78d383ab354b0b9e1d23404ae0d9fbdeb9aa035 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 22 Aug 2016 15:28:38 -0400 Subject: drm/msm: protect against faults from copy_from_user() in submit ioctl An evil userspace could try to cause deadlock by passing an unfaulted-in GEM bo as submit->bos (or submit->cmds) table. Which will trigger msm_gem_fault() while we already hold struct_mutex. See: https://github.com/freedreno/msmtest/blob/master/evilsubmittest.c Cc: stable@vger.kernel.org Signed-off-by: Rob Clark diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index b4bc7f1..d0da52f 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -157,6 +157,12 @@ struct msm_drm_private { struct shrinker shrinker; struct msm_vblank_ctrl vblank_ctrl; + + /* task holding struct_mutex.. currently only used in submit path + * to detect and reject faults from copy_from_user() for submit + * ioctl. + */ + struct task_struct *struct_mutex_task; }; struct msm_format { diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 6cd4af4..85f3047 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -196,11 +196,20 @@ int msm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct drm_gem_object *obj = vma->vm_private_data; struct drm_device *dev = obj->dev; + struct msm_drm_private *priv = dev->dev_private; struct page **pages; unsigned long pfn; pgoff_t pgoff; int ret; + /* This should only happen if userspace tries to pass a mmap'd + * but unfaulted gem bo vaddr into submit ioctl, triggering + * a page fault while struct_mutex is already held. This is + * not a valid use-case so just bail. + */ + if (priv->struct_mutex_task == current) + return VM_FAULT_SIGBUS; + /* Make sure we don't parallel update on a fault, nor move or remove * something from beneath our feet */ diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 408da40..880d6a9 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -394,6 +394,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, if (ret) return ret; + priv->struct_mutex_task = current; + submit = submit_create(dev, gpu, args->nr_bos, args->nr_cmds); if (!submit) { ret = -ENOMEM; @@ -485,6 +487,7 @@ out: if (ret) msm_gem_submit_free(submit); out_unlock: + priv->struct_mutex_task = NULL; mutex_unlock(&dev->struct_mutex); return ret; } -- cgit v0.10.2 From e09c978aae5bedfdb379be80363b024b7d82638b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 27 Aug 2016 23:44:04 -0400 Subject: NFSv4.1: Fix Oopsable condition in server callback races The slot table hasn't been an array since v3.7. Ensure that we use nfs4_lookup_slot() to access the slot correctly. Fixes: 87dda67e7386 ("NFSv4.1: Allow SEQUENCE to resize the slot table...") Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # v3.8+ diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index c92a75e..a4cf6d2 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -454,11 +454,8 @@ static bool referring_call_exists(struct nfs_client *clp, ((u32 *)&rclist->rcl_sessionid.data)[3], ref->rc_sequenceid, ref->rc_slotid); - spin_lock(&tbl->slot_tbl_lock); - status = (test_bit(ref->rc_slotid, tbl->used_slots) && - tbl->slots[ref->rc_slotid].seq_nr == + status = nfs4_slot_seqid_in_use(tbl, ref->rc_slotid, ref->rc_sequenceid); - spin_unlock(&tbl->slot_tbl_lock); if (status) goto out; } diff --git a/fs/nfs/nfs4session.c b/fs/nfs/nfs4session.c index 332d06e..c1f4c20 100644 --- a/fs/nfs/nfs4session.c +++ b/fs/nfs/nfs4session.c @@ -172,6 +172,39 @@ struct nfs4_slot *nfs4_lookup_slot(struct nfs4_slot_table *tbl, u32 slotid) return ERR_PTR(-E2BIG); } +static int nfs4_slot_get_seqid(struct nfs4_slot_table *tbl, u32 slotid, + u32 *seq_nr) + __must_hold(&tbl->slot_tbl_lock) +{ + struct nfs4_slot *slot; + + slot = nfs4_lookup_slot(tbl, slotid); + if (IS_ERR(slot)) + return PTR_ERR(slot); + *seq_nr = slot->seq_nr; + return 0; +} + +/* + * nfs4_slot_seqid_in_use - test if a slot sequence id is still in use + * + * Given a slot table, slot id and sequence number, determine if the + * RPC call in question is still in flight. This function is mainly + * intended for use by the callback channel. + */ +bool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl, u32 slotid, u32 seq_nr) +{ + u32 cur_seq; + bool ret = false; + + spin_lock(&tbl->slot_tbl_lock); + if (nfs4_slot_get_seqid(tbl, slotid, &cur_seq) == 0 && + cur_seq == seq_nr && test_bit(slotid, tbl->used_slots)) + ret = true; + spin_unlock(&tbl->slot_tbl_lock); + return ret; +} + /* * nfs4_alloc_slot - efficiently look for a free slot * diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index 5b51298..33cace6 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -78,6 +78,7 @@ extern int nfs4_setup_slot_table(struct nfs4_slot_table *tbl, extern void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl); extern struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl); extern struct nfs4_slot *nfs4_lookup_slot(struct nfs4_slot_table *tbl, u32 slotid); +extern bool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl, u32 slotid, u32 seq_nr); extern bool nfs4_try_to_lock_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot); extern void nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot); extern void nfs4_slot_tbl_drain_complete(struct nfs4_slot_table *tbl); -- cgit v0.10.2 From 045d2a6d076a2ecd7043ea543ea198af943f8b16 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 28 Aug 2016 13:25:43 -0400 Subject: NFSv4.1: Delay callback processing when there are referring triples If CB_SEQUENCE tells us that the processing of this request depends on the completion of one or more referring triples (see RFC 5661 Section 2.10.6.3), delay the callback processing until after the RPC requests being referred to have completed. If we end up delaying for more than 1/2 second, then fall back to returning NFS4ERR_DELAY in reply to the callback. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index a4cf6d2..c359329 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -454,8 +454,8 @@ static bool referring_call_exists(struct nfs_client *clp, ((u32 *)&rclist->rcl_sessionid.data)[3], ref->rc_sequenceid, ref->rc_slotid); - status = nfs4_slot_seqid_in_use(tbl, ref->rc_slotid, - ref->rc_sequenceid); + status = nfs4_slot_wait_on_seqid(tbl, ref->rc_slotid, + ref->rc_sequenceid, HZ >> 1) < 0; if (status) goto out; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1949bbd..0cc0c31 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -686,6 +686,8 @@ out_unlock: res->sr_slot = NULL; if (send_new_highest_used_slotid) nfs41_notify_server(session->clp); + if (waitqueue_active(&tbl->slot_waitq)) + wake_up_all(&tbl->slot_waitq); } int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) diff --git a/fs/nfs/nfs4session.c b/fs/nfs/nfs4session.c index c1f4c20..b629730 100644 --- a/fs/nfs/nfs4session.c +++ b/fs/nfs/nfs4session.c @@ -28,6 +28,7 @@ static void nfs4_init_slot_table(struct nfs4_slot_table *tbl, const char *queue) tbl->highest_used_slotid = NFS4_NO_SLOT; spin_lock_init(&tbl->slot_tbl_lock); rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, queue); + init_waitqueue_head(&tbl->slot_waitq); init_completion(&tbl->complete); } @@ -192,7 +193,8 @@ static int nfs4_slot_get_seqid(struct nfs4_slot_table *tbl, u32 slotid, * RPC call in question is still in flight. This function is mainly * intended for use by the callback channel. */ -bool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl, u32 slotid, u32 seq_nr) +static bool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl, + u32 slotid, u32 seq_nr) { u32 cur_seq; bool ret = false; @@ -206,6 +208,24 @@ bool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl, u32 slotid, u32 seq_nr) } /* + * nfs4_slot_wait_on_seqid - wait until a slot sequence id is complete + * + * Given a slot table, slot id and sequence number, wait until the + * corresponding RPC call completes. This function is mainly + * intended for use by the callback channel. + */ +int nfs4_slot_wait_on_seqid(struct nfs4_slot_table *tbl, + u32 slotid, u32 seq_nr, + unsigned long timeout) +{ + if (wait_event_timeout(tbl->slot_waitq, + !nfs4_slot_seqid_in_use(tbl, slotid, seq_nr), + timeout) == 0) + return -ETIMEDOUT; + return 0; +} + +/* * nfs4_alloc_slot - efficiently look for a free slot * * nfs4_alloc_slot looks for an unset bit in the used_slots bitmap. diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index 33cace6..fa75d7d 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -36,6 +36,7 @@ struct nfs4_slot_table { unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ spinlock_t slot_tbl_lock; struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ + wait_queue_head_t slot_waitq; /* Completion wait on slot */ u32 max_slots; /* # slots in table */ u32 max_slotid; /* Max allowed slotid value */ u32 highest_used_slotid; /* sent to server on each SEQ. @@ -78,7 +79,9 @@ extern int nfs4_setup_slot_table(struct nfs4_slot_table *tbl, extern void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl); extern struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl); extern struct nfs4_slot *nfs4_lookup_slot(struct nfs4_slot_table *tbl, u32 slotid); -extern bool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl, u32 slotid, u32 seq_nr); +extern int nfs4_slot_wait_on_seqid(struct nfs4_slot_table *tbl, + u32 slotid, u32 seq_nr, + unsigned long timeout); extern bool nfs4_try_to_lock_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot); extern void nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot); extern void nfs4_slot_tbl_drain_complete(struct nfs4_slot_table *tbl); -- cgit v0.10.2 From 07e8dcbda71ef87e9cbdc42b5bb16a44c1ab839b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 28 Aug 2016 10:28:25 -0400 Subject: NFSv4.1: Defer bumping the slot sequence number until we free the slot For operations like OPEN or LAYOUTGET, which return recallable state (i.e. delegations and layouts) we want to enable the mechanism for resolving recall races in RFC5661 Section 2.10.6.3. To do so, we will want to defer bumping the slot's sequence number until we have finished processing the RPC results. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0cc0c31..de4a89d 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -666,6 +666,11 @@ static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) tbl = slot->table; session = tbl->session; + /* Bump the slot sequence number */ + if (slot->seq_done) + slot->seq_nr++; + slot->seq_done = 0; + spin_lock(&tbl->slot_tbl_lock); /* Be nice to the server: try to ensure that the last transmitted * value for highest_user_slotid <= target_highest_slotid @@ -716,7 +721,7 @@ int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) switch (res->sr_status) { case 0: /* Update the slot's sequence and clientid lease timer */ - ++slot->seq_nr; + slot->seq_done = 1; clp = session->clp; do_renew_lease(clp, res->sr_timestamp); /* Check sequence flags */ @@ -771,7 +776,7 @@ int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) goto retry_nowait; default: /* Just update the slot sequence no. */ - ++slot->seq_nr; + slot->seq_done = 1; } out: /* The session may be reset by one of the error handlers. */ diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index fa75d7d..f703b75 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -21,7 +21,8 @@ struct nfs4_slot { unsigned long generation; u32 slot_nr; u32 seq_nr; - unsigned int interrupted : 1; + unsigned int interrupted : 1, + seq_done : 1; }; /* Sessions */ -- cgit v0.10.2 From 2e80dbe7ac51a911e8a828407b1a48c5ba938cd2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 28 Aug 2016 11:50:26 -0400 Subject: NFSv4.1: Close callback races for OPEN, LAYOUTGET and LAYOUTRETURN Defer freeing the slot until after we have processed the results from OPEN and LAYOUTGET. This means that the server can rely on the mechanism in RFC5661 Section 2.10.6.3 to ensure that replies to an OPEN or LAYOUTGET/RETURN RPC call don't race with the callbacks that apply to them. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index de4a89d..f5aecaa 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -634,15 +634,11 @@ out_sleep: } EXPORT_SYMBOL_GPL(nfs40_setup_sequence); -static int nfs40_sequence_done(struct rpc_task *task, - struct nfs4_sequence_res *res) +static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) { struct nfs4_slot *slot = res->sr_slot; struct nfs4_slot_table *tbl; - if (slot == NULL) - goto out; - tbl = slot->table; spin_lock(&tbl->slot_tbl_lock); if (!nfs41_wake_and_assign_slot(tbl, slot)) @@ -650,7 +646,13 @@ static int nfs40_sequence_done(struct rpc_task *task, spin_unlock(&tbl->slot_tbl_lock); res->sr_slot = NULL; -out: +} + +static int nfs40_sequence_done(struct rpc_task *task, + struct nfs4_sequence_res *res) +{ + if (res->sr_slot != NULL) + nfs40_sequence_free_slot(res); return 1; } @@ -695,7 +697,8 @@ out_unlock: wake_up_all(&tbl->slot_waitq); } -int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) +static int nfs41_sequence_process(struct rpc_task *task, + struct nfs4_sequence_res *res) { struct nfs4_session *session; struct nfs4_slot *slot = res->sr_slot; @@ -781,11 +784,11 @@ int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) out: /* The session may be reset by one of the error handlers. */ dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); - nfs41_sequence_free_slot(res); out_noaction: return ret; retry_nowait: if (rpc_restart_call_prepare(task)) { + nfs41_sequence_free_slot(res); task->tk_status = 0; ret = 0; } @@ -796,8 +799,37 @@ out_retry: rpc_delay(task, NFS4_POLL_RETRY_MAX); return 0; } + +int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) +{ + if (!nfs41_sequence_process(task, res)) + return 0; + if (res->sr_slot != NULL) + nfs41_sequence_free_slot(res); + return 1; + +} EXPORT_SYMBOL_GPL(nfs41_sequence_done); +static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) +{ + if (res->sr_slot == NULL) + return 1; + if (res->sr_slot->table->session != NULL) + return nfs41_sequence_process(task, res); + return nfs40_sequence_done(task, res); +} + +static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) +{ + if (res->sr_slot != NULL) { + if (res->sr_slot->table->session != NULL) + nfs41_sequence_free_slot(res); + else + nfs40_sequence_free_slot(res); + } +} + int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) { if (res->sr_slot == NULL) @@ -927,6 +959,17 @@ static int nfs4_setup_sequence(const struct nfs_server *server, args, res, task); } +static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) +{ + return nfs40_sequence_done(task, res); +} + +static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) +{ + if (res->sr_slot != NULL) + nfs40_sequence_free_slot(res); +} + int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) { @@ -1204,6 +1247,7 @@ static void nfs4_opendata_free(struct kref *kref) struct super_block *sb = p->dentry->d_sb; nfs_free_seqid(p->o_arg.seqid); + nfs4_sequence_free_slot(&p->o_res.seq_res); if (p->state != NULL) nfs4_put_open_state(p->state); nfs4_put_state_owner(p->owner); @@ -1663,9 +1707,14 @@ err: static struct nfs4_state * nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) { + struct nfs4_state *ret; + if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) - return _nfs4_opendata_reclaim_to_nfs4_state(data); - return _nfs4_opendata_to_nfs4_state(data); + ret =_nfs4_opendata_reclaim_to_nfs4_state(data); + else + ret = _nfs4_opendata_to_nfs4_state(data); + nfs4_sequence_free_slot(&data->o_res.seq_res); + return ret; } static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) @@ -2063,7 +2112,7 @@ static void nfs4_open_done(struct rpc_task *task, void *calldata) data->rpc_status = task->tk_status; - if (!nfs4_sequence_done(task, &data->o_res.seq_res)) + if (!nfs4_sequence_process(task, &data->o_res.seq_res)) return; if (task->tk_status == 0) { @@ -7871,7 +7920,7 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) struct nfs4_layoutget *lgp = calldata; dprintk("--> %s\n", __func__); - nfs41_sequence_done(task, &lgp->res.seq_res); + nfs41_sequence_process(task, &lgp->res.seq_res); dprintk("<-- %s\n", __func__); } @@ -8087,6 +8136,7 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ if (status == 0 && lgp->res.layoutp->len) lseg = pnfs_layout_process(lgp); + nfs4_sequence_free_slot(&lgp->res.seq_res); rpc_put_task(task); dprintk("<-- %s status=%d\n", __func__, status); if (status) @@ -8113,7 +8163,7 @@ static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) dprintk("--> %s\n", __func__); - if (!nfs41_sequence_done(task, &lrp->res.seq_res)) + if (!nfs41_sequence_process(task, &lrp->res.seq_res)) return; server = NFS_SERVER(lrp->args.inode); @@ -8125,6 +8175,7 @@ static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) case -NFS4ERR_DELAY: if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) break; + nfs4_sequence_free_slot(&lrp->res.seq_res); rpc_restart_call_prepare(task); return; } @@ -8145,6 +8196,7 @@ static void nfs4_layoutreturn_release(void *calldata) pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); pnfs_clear_layoutreturn_waitbit(lo); spin_unlock(&lo->plh_inode->i_lock); + nfs4_sequence_free_slot(&lrp->res.seq_res); pnfs_free_lseg_list(&freeme); pnfs_put_layout_hdr(lrp->args.layout); nfs_iput_and_deactive(lrp->inode); -- cgit v0.10.2 From d138027a8256a3e9d7657c8d0dae84c08ef2cfe1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 28 Aug 2016 12:19:04 -0400 Subject: NFSv4.1: Remove obsolete and incorrrect assignment in nfs4_callback_sequence Signed-off-by: Trond Myklebust diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index c359329..f953ef6 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -484,7 +484,6 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, goto out; tbl = &clp->cl_session->bc_slot_table; - slot = tbl->slots + args->csa_slotid; /* Set up res before grabbing the spinlock */ memcpy(&res->csr_sessionid, &args->csa_sessionid, -- cgit v0.10.2 From add1fa75101263ab4d74240f93000998d4325624 Mon Sep 17 00:00:00 2001 From: Mario Kleiner Date: Sat, 27 Aug 2016 01:02:28 +0200 Subject: drm/atomic: Don't potentially reset color_mgmt_changed on successive property updates. Due to assigning the 'replaced' value instead of or'ing it, if drm_atomic_crtc_set_property() gets called multiple times, the last call will define the color_mgmt_changed flag, so a non-updating call to a property can reset the flag and prevent actual hw state updates required by preceding property updates. Signed-off-by: Mario Kleiner Cc: Daniel Vetter Cc: # v4.6+ Reviewed-by: Daniel Vetter Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index fa39307..2a3ded4 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -475,7 +475,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, val, -1, &replaced); - state->color_mgmt_changed = replaced; + state->color_mgmt_changed |= replaced; return ret; } else if (property == config->ctm_property) { ret = drm_atomic_replace_property_blob_from_id(crtc, @@ -483,7 +483,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, val, sizeof(struct drm_color_ctm), &replaced); - state->color_mgmt_changed = replaced; + state->color_mgmt_changed |= replaced; return ret; } else if (property == config->gamma_lut_property) { ret = drm_atomic_replace_property_blob_from_id(crtc, @@ -491,7 +491,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc, val, -1, &replaced); - state->color_mgmt_changed = replaced; + state->color_mgmt_changed |= replaced; return ret; } else if (crtc->funcs->atomic_set_property) return crtc->funcs->atomic_set_property(crtc, state, property, val); -- cgit v0.10.2 From 3eab887a55424fc2c27553b7bfe32330df83f7b8 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 28 Aug 2016 15:04:33 -0700 Subject: Linux 4.8-rc4 diff --git a/Makefile b/Makefile index 3537aa2..67f42d5 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 4 PATCHLEVEL = 8 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = Psychotic Stoned Sheep # *DOCUMENTATION* -- cgit v0.10.2 From 17de0a9ff3df8f54f2f47746d118112d4e61d973 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 29 Aug 2016 11:33:58 +1000 Subject: iomap: don't set FIEMAP_EXTENT_MERGED for extent based filesystems Filesystems like XFS that use extents should not set the FIEMAP_EXTENT_MERGED flag in the fiemap extent structures. To allow for both behaviors for the upcoming gfs2 usage split the iomap type field into type and flags, and only set FIEMAP_EXTENT_MERGED if the IOMAP_F_MERGED flag is set. The flags field will also come in handy for future features such as shared extents on reflink-enabled file systems. Reported-by: Andreas Gruenbacher Signed-off-by: Christoph Hellwig Acked-by: Darrick J. Wong Signed-off-by: Dave Chinner diff --git a/fs/iomap.c b/fs/iomap.c index 0342254..706270f 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -428,9 +428,12 @@ static int iomap_to_fiemap(struct fiemap_extent_info *fi, break; } + if (iomap->flags & IOMAP_F_MERGED) + flags |= FIEMAP_EXTENT_MERGED; + return fiemap_fill_next_extent(fi, iomap->offset, iomap->blkno != IOMAP_NULL_BLOCK ? iomap->blkno << 9: 0, - iomap->length, flags | FIEMAP_EXTENT_MERGED); + iomap->length, flags); } diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 3267df4..3d70ece 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -19,6 +19,11 @@ struct vm_fault; #define IOMAP_UNWRITTEN 0x04 /* blocks allocated @blkno in unwritten state */ /* + * Flags for iomap mappings: + */ +#define IOMAP_F_MERGED 0x01 /* contains multiple blocks/extents */ + +/* * Magic value for blkno: */ #define IOMAP_NULL_BLOCK -1LL /* blkno is not valid */ @@ -27,7 +32,8 @@ struct iomap { sector_t blkno; /* 1st sector of mapping, 512b units */ loff_t offset; /* file offset of mapping, bytes */ u64 length; /* length of mapping, bytes */ - int type; /* type of mapping */ + u16 type; /* type of mapping */ + u16 flags; /* flags for mapping */ struct block_device *bdev; /* block device for I/O */ }; -- cgit v0.10.2 From cc7786d3ee7e3c979799db834b528db2c0834c2e Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Mon, 25 Jul 2016 14:26:51 +1000 Subject: powerpc/tm: do not use r13 for tabort_syscall tabort_syscall runs with RI=1, so a nested recoverable machine check will load the paca into r13 and overwrite what we loaded it with, because exceptions returning to privileged mode do not restore r13. Fixes: b4b56f9ecab4 (powerpc/tm: Abort syscalls in active transactions) Cc: stable@vger.kernel.org Signed-off-by: Nick Piggin Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 6b8bc0d..5afd03e 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -368,13 +368,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) tabort_syscall: /* Firstly we need to enable TM in the kernel */ mfmsr r10 - li r13, 1 - rldimi r10, r13, MSR_TM_LG, 63-MSR_TM_LG + li r9, 1 + rldimi r10, r9, MSR_TM_LG, 63-MSR_TM_LG mtmsrd r10, 0 /* tabort, this dooms the transaction, nothing else */ - li r13, (TM_CAUSE_SYSCALL|TM_CAUSE_PERSISTENT) - TABORT(R13) + li r9, (TM_CAUSE_SYSCALL|TM_CAUSE_PERSISTENT) + TABORT(R9) /* * Return directly to userspace. We have corrupted user register state, @@ -382,8 +382,8 @@ tabort_syscall: * resume after the tbegin of the aborted transaction with the * checkpointed register state. */ - li r13, MSR_RI - andc r10, r10, r13 + li r9, MSR_RI + andc r10, r10, r9 mtmsrd r10, 1 mtspr SPRN_SRR0, r11 mtspr SPRN_SRR1, r12 -- cgit v0.10.2 From a9cbf0b2195b695cbeeeecaa4e2770948c212e9a Mon Sep 17 00:00:00 2001 From: Mukesh Ojha Date: Mon, 22 Aug 2016 12:17:44 +0530 Subject: powerpc/powernv : Drop reference added by kset_find_obj() In a situation, where Linux kernel gets notified about duplicate error log from OPAL, it is been observed that kernel fails to remove sysfs entries (/sys/firmware/opal/elog/0xXXXXXXXX) of such error logs. This is because, we currently search the error log/dump kobject in the kset list via 'kset_find_obj()' routine. Which eventually increment the reference count by one, once it founds the kobject. So, unless we decrement the reference count by one after it found the kobject, we would not be able to release the kobject properly later. This patch adds the 'kobject_put()' which was missing earlier. Signed-off-by: Mukesh Ojha Cc: stable@vger.kernel.org Reviewed-by: Vasant Hegde Signed-off-by: Benjamin Herrenschmidt diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index 2ee9643..4c82782 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -370,6 +370,7 @@ static irqreturn_t process_dump(int irq, void *data) uint32_t dump_id, dump_size, dump_type; struct dump_obj *dump; char name[22]; + struct kobject *kobj; rc = dump_read_info(&dump_id, &dump_size, &dump_type); if (rc != OPAL_SUCCESS) @@ -381,8 +382,12 @@ static irqreturn_t process_dump(int irq, void *data) * that gracefully and not create two conflicting * entries. */ - if (kset_find_obj(dump_kset, name)) + kobj = kset_find_obj(dump_kset, name); + if (kobj) { + /* Drop reference added by kset_find_obj() */ + kobject_put(kobj); return 0; + } dump = create_dump_obj(dump_id, dump_size, dump_type); if (!dump) diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index 37f959b..f2344cb 100644 --- a/arch/powerpc/platforms/powernv/opal-elog.c +++ b/arch/powerpc/platforms/powernv/opal-elog.c @@ -247,6 +247,7 @@ static irqreturn_t elog_event(int irq, void *data) uint64_t elog_type; int rc; char name[2+16+1]; + struct kobject *kobj; rc = opal_get_elog_size(&id, &size, &type); if (rc != OPAL_SUCCESS) { @@ -269,8 +270,12 @@ static irqreturn_t elog_event(int irq, void *data) * that gracefully and not create two conflicting * entries. */ - if (kset_find_obj(elog_kset, name)) + kobj = kset_find_obj(elog_kset, name); + if (kobj) { + /* Drop reference added by kset_find_obj() */ + kobject_put(kobj); return IRQ_HANDLED; + } create_elog_obj(log_id, elog_size, elog_type); -- cgit v0.10.2 From 78a3e8889b4b6b99775ed954696ff3e017f5d19b Mon Sep 17 00:00:00 2001 From: Cyril Bur Date: Tue, 23 Aug 2016 10:46:17 +1000 Subject: powerpc: signals: Discard transaction state from signal frames Userspace can begin and suspend a transaction within the signal handler which means they might enter sys_rt_sigreturn() with the processor in suspended state. sys_rt_sigreturn() wants to restore process context (which may have been in a transaction before signal delivery). To do this it must restore TM SPRS. To achieve this, any transaction initiated within the signal frame must be discarded in order to be able to restore TM SPRs as TM SPRs can only be manipulated non-transactionally.. >From the PowerPC ISA: TM Bad Thing Exception [Category: Transactional Memory] An attempt is made to execute a mtspr targeting a TM register in other than Non-transactional state. Not doing so results in a TM Bad Thing: [12045.221359] Kernel BUG at c000000000050a40 [verbose debug info unavailable] [12045.221470] Unexpected TM Bad Thing exception at c000000000050a40 (msr 0x201033) [12045.221540] Oops: Unrecoverable exception, sig: 6 [#1] [12045.221586] SMP NR_CPUS=2048 NUMA PowerNV [12045.221634] Modules linked in: xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables kvm_hv kvm uio_pdrv_genirq ipmi_powernv uio powernv_rng ipmi_msghandler autofs4 ses enclosure scsi_transport_sas bnx2x ipr mdio libcrc32c [12045.222167] CPU: 68 PID: 6178 Comm: sigreturnpanic Not tainted 4.7.0 #34 [12045.222224] task: c0000000fce38600 ti: c0000000fceb4000 task.ti: c0000000fceb4000 [12045.222293] NIP: c000000000050a40 LR: c0000000000163bc CTR: 0000000000000000 [12045.222361] REGS: c0000000fceb7ac0 TRAP: 0700 Not tainted (4.7.0) [12045.222418] MSR: 9000000300201033 CR: 28444280 XER: 20000000 [12045.222625] CFAR: c0000000000163b8 SOFTE: 0 PACATMSCRATCH: 900000014280f033 GPR00: 01100000b8000001 c0000000fceb7d40 c00000000139c100 c0000000fce390d0 GPR04: 900000034280f033 0000000000000000 0000000000000000 0000000000000000 GPR08: 0000000000000000 b000000000001033 0000000000000001 0000000000000000 GPR12: 0000000000000000 c000000002926400 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR24: 0000000000000000 00003ffff98cadd0 00003ffff98cb470 0000000000000000 GPR28: 900000034280f033 c0000000fceb7ea0 0000000000000001 c0000000fce390d0 [12045.223535] NIP [c000000000050a40] tm_restore_sprs+0xc/0x1c [12045.223584] LR [c0000000000163bc] tm_recheckpoint+0x5c/0xa0 [12045.223630] Call Trace: [12045.223655] [c0000000fceb7d80] [c000000000026e74] sys_rt_sigreturn+0x494/0x6c0 [12045.223738] [c0000000fceb7e30] [c0000000000092e0] system_call+0x38/0x108 [12045.223806] Instruction dump: [12045.223841] 7c800164 4e800020 7c0022a6 f80304a8 7c0222a6 f80304b0 7c0122a6 f80304b8 [12045.223955] 4e800020 e80304a8 7c0023a6 e80304b0 <7c0223a6> e80304b8 7c0123a6 4e800020 [12045.224074] ---[ end trace cb8002ee240bae76 ]--- It isn't clear exactly if there is really a use case for userspace returning with a suspended transaction, however, doing so doesn't (on its own) constitute a bad frame. As such, this patch simply discards the transactional state of the context calling the sigreturn and continues. Reported-by: Laurent Dufour Signed-off-by: Cyril Bur Tested-by: Laurent Dufour Reviewed-by: Laurent Dufour Acked-by: Simon Guo Signed-off-by: Benjamin Herrenschmidt diff --git a/Documentation/powerpc/transactional_memory.txt b/Documentation/powerpc/transactional_memory.txt index ba0a2a4..e32fdbb 100644 --- a/Documentation/powerpc/transactional_memory.txt +++ b/Documentation/powerpc/transactional_memory.txt @@ -167,6 +167,8 @@ signal will be rolled back anyway. For signals taken in non-TM or suspended mode, we use the normal/non-checkpointed stack pointer. +Any transaction initiated inside a sighandler and suspended on return +from the sighandler to the kernel will get reclaimed and discarded. Failure cause codes used by kernel ================================== diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index b6aa378..a7daf74 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -1226,7 +1226,21 @@ long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8, (regs->gpr[1] + __SIGNAL_FRAMESIZE + 16); if (!access_ok(VERIFY_READ, rt_sf, sizeof(*rt_sf))) goto bad; + #ifdef CONFIG_PPC_TRANSACTIONAL_MEM + /* + * If there is a transactional state then throw it away. + * The purpose of a sigreturn is to destroy all traces of the + * signal frame, this includes any transactional state created + * within in. We only check for suspended as we can never be + * active in the kernel, we are active, there is nothing better to + * do than go ahead and Bad Thing later. + * The cause is not important as there will never be a + * recheckpoint so it's not user visible. + */ + if (MSR_TM_SUSPENDED(mfmsr())) + tm_reclaim_current(0); + if (__get_user(tmp, &rt_sf->uc.uc_link)) goto bad; uc_transact = (struct ucontext __user *)(uintptr_t)tmp; diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 7e49984..70409bb 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -676,7 +676,21 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5, if (__copy_from_user(&set, &uc->uc_sigmask, sizeof(set))) goto badframe; set_current_blocked(&set); + #ifdef CONFIG_PPC_TRANSACTIONAL_MEM + /* + * If there is a transactional state then throw it away. + * The purpose of a sigreturn is to destroy all traces of the + * signal frame, this includes any transactional state created + * within in. We only check for suspended as we can never be + * active in the kernel, we are active, there is nothing better to + * do than go ahead and Bad Thing later. + * The cause is not important as there will never be a + * recheckpoint so it's not user visible. + */ + if (MSR_TM_SUSPENDED(mfmsr())) + tm_reclaim_current(0); + if (__get_user(msr, &uc->uc_mcontext.gp_regs[PT_MSR])) goto badframe; if (MSR_TM_ACTIVE(msr)) { -- cgit v0.10.2 From fe4c988bdd1cc60402a4e3ca3976a686ea991b5a Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Mon, 29 Aug 2016 01:13:42 +0300 Subject: net/mlx5e: Limit UMR length to the device's limitation ConnectX-4 UMR (User Memory Region) MTT translation table offset in WQE is limited to U16_MAX, before this patch we ignored that limitation and requested the maximum possible UMR translation length that the netdev might need (MAX channels * MAX pages per channel). In case of a system with #cores > 32 and when linear WQE allocation fails, falling back to using UMR WQEs will cause the RQ (Receive Queue) to get stuck. Here we limit UMR length to min(U16_MAX, max required pages) (while considering the required alignments) on driver load, by default U16_MAX is sufficient since the default RX rings value guarantees that we are in range, dynamically (on set_ringparam/set_channels) we will check if the new required UMR length (num mtts) is still in range, if not, fail the request. Fixes: bc77b240b3c5 ('net/mlx5e: Add fragmented memory support for RX multi packet WQE') Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 1b495ef..d63a1b8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -73,8 +73,12 @@ #define MLX5_MPWRQ_PAGES_PER_WQE BIT(MLX5_MPWRQ_WQE_PAGE_ORDER) #define MLX5_MPWRQ_STRIDES_PER_PAGE (MLX5_MPWRQ_NUM_STRIDES >> \ MLX5_MPWRQ_WQE_PAGE_ORDER) -#define MLX5_CHANNEL_MAX_NUM_MTTS (ALIGN(MLX5_MPWRQ_PAGES_PER_WQE, 8) * \ - BIT(MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW)) + +#define MLX5_MTT_OCTW(npages) (ALIGN(npages, 8) / 2) +#define MLX5E_REQUIRED_MTTS(rqs, wqes)\ + (rqs * wqes * ALIGN(MLX5_MPWRQ_PAGES_PER_WQE, 8)) +#define MLX5E_VALID_NUM_MTTS(num_mtts) (MLX5_MTT_OCTW(num_mtts) <= U16_MAX) + #define MLX5_UMR_ALIGN (2048) #define MLX5_MPWRQ_SMALL_PACKET_THRESHOLD (128) @@ -304,6 +308,7 @@ struct mlx5e_rq { unsigned long state; int ix; + u32 mpwqe_mtt_offset; struct mlx5e_rx_am am; /* Adaptive Moderation */ @@ -814,11 +819,6 @@ static inline int mlx5e_get_max_num_channels(struct mlx5_core_dev *mdev) MLX5E_MAX_NUM_CHANNELS); } -static inline int mlx5e_get_mtt_octw(int npages) -{ - return ALIGN(npages, 8) / 2; -} - extern const struct ethtool_ops mlx5e_ethtool_ops; #ifdef CONFIG_MLX5_CORE_EN_DCB extern const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index 4a3757e..9cfe408 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -373,6 +373,7 @@ static int mlx5e_set_ringparam(struct net_device *dev, u16 min_rx_wqes; u8 log_rq_size; u8 log_sq_size; + u32 num_mtts; int err = 0; if (param->rx_jumbo_pending) { @@ -397,6 +398,15 @@ static int mlx5e_set_ringparam(struct net_device *dev, 1 << mlx5_max_log_rq_size(rq_wq_type)); return -EINVAL; } + + num_mtts = MLX5E_REQUIRED_MTTS(priv->params.num_channels, param->rx_pending); + if (priv->params.rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ && + !MLX5E_VALID_NUM_MTTS(num_mtts)) { + netdev_info(dev, "%s: rx_pending (%d) request can't be satisfied, try to reduce.\n", + __func__, param->rx_pending); + return -EINVAL; + } + if (param->tx_pending < (1 << MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)) { netdev_info(dev, "%s: tx_pending (%d) < min (%d)\n", __func__, param->tx_pending, @@ -454,6 +464,7 @@ static int mlx5e_set_channels(struct net_device *dev, unsigned int count = ch->combined_count; bool arfs_enabled; bool was_opened; + u32 num_mtts; int err = 0; if (!count) { @@ -472,6 +483,14 @@ static int mlx5e_set_channels(struct net_device *dev, return -EINVAL; } + num_mtts = MLX5E_REQUIRED_MTTS(count, BIT(priv->params.log_rq_size)); + if (priv->params.rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ && + !MLX5E_VALID_NUM_MTTS(num_mtts)) { + netdev_info(dev, "%s: rx count (%d) request can't be satisfied, try to reduce.\n", + __func__, count); + return -EINVAL; + } + if (priv->params.num_channels == count) return 0; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 03d944c..65360b1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -340,6 +340,9 @@ static int mlx5e_create_rq(struct mlx5e_channel *c, rq->alloc_wqe = mlx5e_alloc_rx_mpwqe; rq->dealloc_wqe = mlx5e_dealloc_rx_mpwqe; + rq->mpwqe_mtt_offset = c->ix * + MLX5E_REQUIRED_MTTS(1, BIT(priv->params.log_rq_size)); + rq->mpwqe_stride_sz = BIT(priv->params.mpwqe_log_stride_sz); rq->mpwqe_num_strides = BIT(priv->params.mpwqe_log_num_strides); rq->wqe_sz = rq->mpwqe_stride_sz * rq->mpwqe_num_strides; @@ -3233,8 +3236,8 @@ static int mlx5e_create_umr_mkey(struct mlx5e_priv *priv) struct mlx5_create_mkey_mbox_in *in; struct mlx5_mkey_seg *mkc; int inlen = sizeof(*in); - u64 npages = - priv->profile->max_nch(mdev) * MLX5_CHANNEL_MAX_NUM_MTTS; + u64 npages = MLX5E_REQUIRED_MTTS(priv->profile->max_nch(mdev), + BIT(MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW)); int err; in = mlx5_vzalloc(inlen); @@ -3248,10 +3251,12 @@ static int mlx5e_create_umr_mkey(struct mlx5e_priv *priv) MLX5_PERM_LOCAL_WRITE | MLX5_ACCESS_MODE_MTT; + npages = min_t(u32, ALIGN(U16_MAX, 4) * 2, npages); + mkc->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); mkc->flags_pd = cpu_to_be32(mdev->mlx5e_res.pdn); mkc->len = cpu_to_be64(npages << PAGE_SHIFT); - mkc->xlt_oct_size = cpu_to_be32(mlx5e_get_mtt_octw(npages)); + mkc->xlt_oct_size = cpu_to_be32(MLX5_MTT_OCTW(npages)); mkc->log2_page_size = PAGE_SHIFT; err = mlx5_core_create_mkey(mdev, &priv->umr_mkey, in, inlen, NULL, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index 9f2a16a..bdc9e33 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -324,9 +324,9 @@ mlx5e_copy_skb_header_fragmented_mpwqe(struct device *pdev, } } -static u16 mlx5e_get_wqe_mtt_offset(u16 rq_ix, u16 wqe_ix) +static u32 mlx5e_get_wqe_mtt_offset(struct mlx5e_rq *rq, u16 wqe_ix) { - return rq_ix * MLX5_CHANNEL_MAX_NUM_MTTS + + return rq->mpwqe_mtt_offset + wqe_ix * ALIGN(MLX5_MPWRQ_PAGES_PER_WQE, 8); } @@ -340,7 +340,7 @@ static void mlx5e_build_umr_wqe(struct mlx5e_rq *rq, struct mlx5_wqe_data_seg *dseg = &wqe->data; struct mlx5e_mpw_info *wi = &rq->wqe_info[ix]; u8 ds_cnt = DIV_ROUND_UP(sizeof(*wqe), MLX5_SEND_WQE_DS); - u16 umr_wqe_mtt_offset = mlx5e_get_wqe_mtt_offset(rq->ix, ix); + u32 umr_wqe_mtt_offset = mlx5e_get_wqe_mtt_offset(rq, ix); memset(wqe, 0, sizeof(*wqe)); cseg->opmod_idx_opcode = @@ -353,9 +353,9 @@ static void mlx5e_build_umr_wqe(struct mlx5e_rq *rq, ucseg->flags = MLX5_UMR_TRANSLATION_OFFSET_EN; ucseg->klm_octowords = - cpu_to_be16(mlx5e_get_mtt_octw(MLX5_MPWRQ_PAGES_PER_WQE)); + cpu_to_be16(MLX5_MTT_OCTW(MLX5_MPWRQ_PAGES_PER_WQE)); ucseg->bsf_octowords = - cpu_to_be16(mlx5e_get_mtt_octw(umr_wqe_mtt_offset)); + cpu_to_be16(MLX5_MTT_OCTW(umr_wqe_mtt_offset)); ucseg->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE); dseg->lkey = sq->mkey_be; @@ -423,7 +423,7 @@ static int mlx5e_alloc_rx_fragmented_mpwqe(struct mlx5e_rq *rq, { struct mlx5e_mpw_info *wi = &rq->wqe_info[ix]; int mtt_sz = mlx5e_get_wqe_mtt_sz(); - u32 dma_offset = mlx5e_get_wqe_mtt_offset(rq->ix, ix) << PAGE_SHIFT; + u64 dma_offset = (u64)mlx5e_get_wqe_mtt_offset(rq, ix) << PAGE_SHIFT; int i; wi->umr.dma_info = kmalloc(sizeof(*wi->umr.dma_info) * -- cgit v0.10.2 From f2fde18c52a7367a8f6cf6855e2a7174e601c8ee Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Mon, 29 Aug 2016 01:13:43 +0300 Subject: net/mlx5e: Don't wait for RQ completions on close This will significantly reduce receive queue flush time on interface down. Instead of asking the firmware to flush the RQ (Receive Queue) via asynchronous completions when moved to error, we handle RQ flush manually (mlx5e_free_rx_descs) same as we did when RQ flush got timed out. This will reduce RQs flush time and speedup interface down procedure (ifconfig down) from 6 sec to 0.3 sec on a 48 cores system. Moved mlx5e_free_rx_descs en_main.c where it is needed, to keep en_rx.c free form non critical data path code for better code locality. Fixes: 6cd392a082de ('net/mlx5e: Handle RQ flush in error cases') Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index d63a1b8..26a7ec7 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -223,9 +223,8 @@ struct mlx5e_tstamp { }; enum { - MLX5E_RQ_STATE_POST_WQES_ENABLE, + MLX5E_RQ_STATE_FLUSH, MLX5E_RQ_STATE_UMR_WQE_IN_PROGRESS, - MLX5E_RQ_STATE_FLUSH_TIMEOUT, MLX5E_RQ_STATE_AM, }; @@ -703,7 +702,6 @@ int mlx5e_napi_poll(struct napi_struct *napi, int budget); bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget); int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget); void mlx5e_free_tx_descs(struct mlx5e_sq *sq); -void mlx5e_free_rx_descs(struct mlx5e_rq *rq); void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 65360b1..2463eba 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -431,7 +431,6 @@ static int mlx5e_enable_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param) MLX5_SET(rqc, rqc, cqn, rq->cq.mcq.cqn); MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST); - MLX5_SET(rqc, rqc, flush_in_error_en, 1); MLX5_SET(rqc, rqc, vsd, priv->params.vlan_strip_disable); MLX5_SET(wq, wq, log_wq_pg_sz, rq->wq_ctrl.buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT); @@ -528,6 +527,23 @@ static int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq) return -ETIMEDOUT; } +static void mlx5e_free_rx_descs(struct mlx5e_rq *rq) +{ + struct mlx5_wq_ll *wq = &rq->wq; + struct mlx5e_rx_wqe *wqe; + __be16 wqe_ix_be; + u16 wqe_ix; + + while (!mlx5_wq_ll_is_empty(wq)) { + wqe_ix_be = *wq->tail_next; + wqe_ix = be16_to_cpu(wqe_ix_be); + wqe = mlx5_wq_ll_get_wqe(&rq->wq, wqe_ix); + rq->dealloc_wqe(rq, wqe_ix); + mlx5_wq_ll_pop(&rq->wq, wqe_ix_be, + &wqe->next.next_wqe_index); + } +} + static int mlx5e_open_rq(struct mlx5e_channel *c, struct mlx5e_rq_param *param, struct mlx5e_rq *rq) @@ -551,8 +567,6 @@ static int mlx5e_open_rq(struct mlx5e_channel *c, if (param->am_enabled) set_bit(MLX5E_RQ_STATE_AM, &c->rq.state); - set_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state); - sq->ico_wqe_info[pi].opcode = MLX5_OPCODE_NOP; sq->ico_wqe_info[pi].num_wqebbs = 1; mlx5e_send_nop(sq, true); /* trigger mlx5e_post_rx_wqes() */ @@ -569,23 +583,8 @@ err_destroy_rq: static void mlx5e_close_rq(struct mlx5e_rq *rq) { - int tout = 0; - int err; - - clear_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state); + set_bit(MLX5E_RQ_STATE_FLUSH, &rq->state); napi_synchronize(&rq->channel->napi); /* prevent mlx5e_post_rx_wqes */ - - err = mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RDY, MLX5_RQC_STATE_ERR); - while (!mlx5_wq_ll_is_empty(&rq->wq) && !err && - tout++ < MLX5_EN_QP_FLUSH_MAX_ITER) - msleep(MLX5_EN_QP_FLUSH_MSLEEP_QUANT); - - if (err || tout == MLX5_EN_QP_FLUSH_MAX_ITER) - set_bit(MLX5E_RQ_STATE_FLUSH_TIMEOUT, &rq->state); - - /* avoid destroying rq before mlx5e_poll_rx_cq() is done with it */ - napi_synchronize(&rq->channel->napi); - cancel_work_sync(&rq->am.work); mlx5e_disable_rq(rq); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index bdc9e33..fee1e47 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -595,26 +595,9 @@ void mlx5e_dealloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix) wi->free_wqe(rq, wi); } -void mlx5e_free_rx_descs(struct mlx5e_rq *rq) -{ - struct mlx5_wq_ll *wq = &rq->wq; - struct mlx5e_rx_wqe *wqe; - __be16 wqe_ix_be; - u16 wqe_ix; - - while (!mlx5_wq_ll_is_empty(wq)) { - wqe_ix_be = *wq->tail_next; - wqe_ix = be16_to_cpu(wqe_ix_be); - wqe = mlx5_wq_ll_get_wqe(&rq->wq, wqe_ix); - rq->dealloc_wqe(rq, wqe_ix); - mlx5_wq_ll_pop(&rq->wq, wqe_ix_be, - &wqe->next.next_wqe_index); - } -} - #define RQ_CANNOT_POST(rq) \ - (!test_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state) || \ - test_bit(MLX5E_RQ_STATE_UMR_WQE_IN_PROGRESS, &rq->state)) + (test_bit(MLX5E_RQ_STATE_FLUSH, &rq->state) || \ + test_bit(MLX5E_RQ_STATE_UMR_WQE_IN_PROGRESS, &rq->state)) bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq) { @@ -916,7 +899,7 @@ int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget) struct mlx5e_rq *rq = container_of(cq, struct mlx5e_rq, cq); int work_done = 0; - if (unlikely(test_bit(MLX5E_RQ_STATE_FLUSH_TIMEOUT, &rq->state))) + if (unlikely(test_bit(MLX5E_RQ_STATE_FLUSH, &rq->state))) return 0; if (cq->decmprs_left) -- cgit v0.10.2 From 8484f9ed13b26043be80ff5774506024956eae8f Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Mon, 29 Aug 2016 01:13:44 +0300 Subject: net/mlx5e: Don't post fragmented MPWQE when RQ is disabled ICO (Internal control operations) SQ (Send Queue) is closed/disabled after RQ (Receive Queue). After RQ is closed an ICO SQ completion might post a fragmented MPWQE (Multi Packet Work Queue Element) into that RQ. As on regular RQ post, check if we are allowed to post to that RQ (RQ is enabled). Cleanup in-progress UMR MPWQE on mlx5e_free_rx_descs if needed. Fixes: bc77b240b3c5 ('net/mlx5e: Add fragmented memory support for RX multi packet WQE') Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 2463eba..e259eaa 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -534,6 +534,10 @@ static void mlx5e_free_rx_descs(struct mlx5e_rq *rq) __be16 wqe_ix_be; u16 wqe_ix; + /* UMR WQE (if in progress) is always at wq->head */ + if (test_bit(MLX5E_RQ_STATE_UMR_WQE_IN_PROGRESS, &rq->state)) + mlx5e_free_rx_fragmented_mpwqe(rq, &rq->wqe_info[wq->head]); + while (!mlx5_wq_ll_is_empty(wq)) { wqe_ix_be = *wq->tail_next; wqe_ix = be16_to_cpu(wqe_ix_be); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index fee1e47..b6f8ebb 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -506,6 +506,12 @@ void mlx5e_post_rx_fragmented_mpwqe(struct mlx5e_rq *rq) struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(wq, wq->head); clear_bit(MLX5E_RQ_STATE_UMR_WQE_IN_PROGRESS, &rq->state); + + if (unlikely(test_bit(MLX5E_RQ_STATE_FLUSH, &rq->state))) { + mlx5e_free_rx_fragmented_mpwqe(rq, &rq->wqe_info[wq->head]); + return; + } + mlx5_wq_ll_push(wq, be16_to_cpu(wqe->next.next_wqe_index)); rq->stats.mpwqe_frag++; -- cgit v0.10.2 From 6e8dd6d6f4bd2fd6fefdbf2e73bf251e36db59af Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Mon, 29 Aug 2016 01:13:45 +0300 Subject: net/mlx5e: Don't wait for SQ completions on close Instead of asking the firmware to flush the SQ (Send Queue) via asynchronous completions when moved to error, we handle SQ flush manually (mlx5e_free_tx_descs) same as we did when SQ flush got timed out or on tx_timeout. This will reduce SQs flush time and speedup interface down procedure. Moved mlx5e_free_tx_descs to the end of en_tx.c for tx critical code locality. Fixes: 29429f3300a3 ('net/mlx5e: Timeout if SQ doesn't flush during close') Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 26a7ec7..bf722aa 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -369,9 +369,8 @@ struct mlx5e_sq_dma { }; enum { - MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, + MLX5E_SQ_STATE_FLUSH, MLX5E_SQ_STATE_BF_ENABLE, - MLX5E_SQ_STATE_TX_TIMEOUT, }; struct mlx5e_ico_wqe_info { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index e259eaa..297781a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -39,13 +39,6 @@ #include "eswitch.h" #include "vxlan.h" -enum { - MLX5_EN_QP_FLUSH_TIMEOUT_MS = 5000, - MLX5_EN_QP_FLUSH_MSLEEP_QUANT = 20, - MLX5_EN_QP_FLUSH_MAX_ITER = MLX5_EN_QP_FLUSH_TIMEOUT_MS / - MLX5_EN_QP_FLUSH_MSLEEP_QUANT, -}; - struct mlx5e_rq_param { u32 rqc[MLX5_ST_SZ_DW(rqc)]; struct mlx5_wq_param wq; @@ -827,7 +820,6 @@ static int mlx5e_open_sq(struct mlx5e_channel *c, goto err_disable_sq; if (sq->txq) { - set_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state); netdev_tx_reset_queue(sq->txq); netif_tx_start_queue(sq->txq); } @@ -851,38 +843,20 @@ static inline void netif_tx_disable_queue(struct netdev_queue *txq) static void mlx5e_close_sq(struct mlx5e_sq *sq) { - int tout = 0; - int err; + set_bit(MLX5E_SQ_STATE_FLUSH, &sq->state); + /* prevent netif_tx_wake_queue */ + napi_synchronize(&sq->channel->napi); if (sq->txq) { - clear_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state); - /* prevent netif_tx_wake_queue */ - napi_synchronize(&sq->channel->napi); netif_tx_disable_queue(sq->txq); - /* ensure hw is notified of all pending wqes */ + /* last doorbell out, godspeed .. */ if (mlx5e_sq_has_room_for(sq, 1)) mlx5e_send_nop(sq, true); - - err = mlx5e_modify_sq(sq, MLX5_SQC_STATE_RDY, - MLX5_SQC_STATE_ERR, false, 0); - if (err) - set_bit(MLX5E_SQ_STATE_TX_TIMEOUT, &sq->state); } - /* wait till sq is empty, unless a TX timeout occurred on this SQ */ - while (sq->cc != sq->pc && - !test_bit(MLX5E_SQ_STATE_TX_TIMEOUT, &sq->state)) { - msleep(MLX5_EN_QP_FLUSH_MSLEEP_QUANT); - if (tout++ > MLX5_EN_QP_FLUSH_MAX_ITER) - set_bit(MLX5E_SQ_STATE_TX_TIMEOUT, &sq->state); - } - - /* avoid destroying sq before mlx5e_poll_tx_cq() is done with it */ - napi_synchronize(&sq->channel->napi); - - mlx5e_free_tx_descs(sq); mlx5e_disable_sq(sq); + mlx5e_free_tx_descs(sq); mlx5e_destroy_sq(sq); } @@ -2802,7 +2776,7 @@ static void mlx5e_tx_timeout(struct net_device *dev) if (!netif_xmit_stopped(netdev_get_tx_queue(dev, i))) continue; sched_work = true; - set_bit(MLX5E_SQ_STATE_TX_TIMEOUT, &sq->state); + set_bit(MLX5E_SQ_STATE_FLUSH, &sq->state); netdev_err(dev, "TX timeout on queue: %d, SQ: 0x%x, CQ: 0x%x, SQ Cons: 0x%x SQ Prod: 0x%x\n", i, sq->sqn, sq->cq.mcq.cqn, sq->cc, sq->pc); } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index e073bf59..5f209ad 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -394,35 +394,6 @@ netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev) return mlx5e_sq_xmit(sq, skb); } -void mlx5e_free_tx_descs(struct mlx5e_sq *sq) -{ - struct mlx5e_tx_wqe_info *wi; - struct sk_buff *skb; - u16 ci; - int i; - - while (sq->cc != sq->pc) { - ci = sq->cc & sq->wq.sz_m1; - skb = sq->skb[ci]; - wi = &sq->wqe_info[ci]; - - if (!skb) { /* nop */ - sq->cc++; - continue; - } - - for (i = 0; i < wi->num_dma; i++) { - struct mlx5e_sq_dma *dma = - mlx5e_dma_get(sq, sq->dma_fifo_cc++); - - mlx5e_tx_dma_unmap(sq->pdev, dma); - } - - dev_kfree_skb_any(skb); - sq->cc += wi->num_wqebbs; - } -} - bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) { struct mlx5e_sq *sq; @@ -434,7 +405,7 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) sq = container_of(cq, struct mlx5e_sq, cq); - if (unlikely(test_bit(MLX5E_SQ_STATE_TX_TIMEOUT, &sq->state))) + if (unlikely(test_bit(MLX5E_SQ_STATE_FLUSH, &sq->state))) return false; npkts = 0; @@ -512,11 +483,39 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) netdev_tx_completed_queue(sq->txq, npkts, nbytes); if (netif_tx_queue_stopped(sq->txq) && - mlx5e_sq_has_room_for(sq, MLX5E_SQ_STOP_ROOM) && - likely(test_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state))) { - netif_tx_wake_queue(sq->txq); - sq->stats.wake++; + mlx5e_sq_has_room_for(sq, MLX5E_SQ_STOP_ROOM)) { + netif_tx_wake_queue(sq->txq); + sq->stats.wake++; } return (i == MLX5E_TX_CQ_POLL_BUDGET); } + +void mlx5e_free_tx_descs(struct mlx5e_sq *sq) +{ + struct mlx5e_tx_wqe_info *wi; + struct sk_buff *skb; + u16 ci; + int i; + + while (sq->cc != sq->pc) { + ci = sq->cc & sq->wq.sz_m1; + skb = sq->skb[ci]; + wi = &sq->wqe_info[ci]; + + if (!skb) { /* nop */ + sq->cc++; + continue; + } + + for (i = 0; i < wi->num_dma; i++) { + struct mlx5e_sq_dma *dma = + mlx5e_dma_get(sq, sq->dma_fifo_cc++); + + mlx5e_tx_dma_unmap(sq->pdev, dma); + } + + dev_kfree_skb_any(skb); + sq->cc += wi->num_wqebbs; + } +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c index 64ae2e8..9bf33bb 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c @@ -51,16 +51,18 @@ struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq) static void mlx5e_poll_ico_cq(struct mlx5e_cq *cq) { + struct mlx5e_sq *sq = container_of(cq, struct mlx5e_sq, cq); struct mlx5_wq_cyc *wq; struct mlx5_cqe64 *cqe; - struct mlx5e_sq *sq; u16 sqcc; + if (unlikely(test_bit(MLX5E_SQ_STATE_FLUSH, &sq->state))) + return; + cqe = mlx5e_get_cqe(cq); if (likely(!cqe)) return; - sq = container_of(cq, struct mlx5e_sq, cq); wq = &sq->wq; /* sq->cc must be updated only after mlx5_cqwq_update_db_record(), -- cgit v0.10.2 From cc8e9ebf952699cb6870f1366a4920d05b036e31 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Mon, 29 Aug 2016 01:13:46 +0300 Subject: net/mlx5e: Fix ethtool -g/G rx ring parameter report with striding RQ The driver RQ has two possible configurations: striding RQ and non-striding RQ. Until this patch, the driver always reported the number of hardware WQEs (ring descriptors). For non striding RQ configuration, this was OK since we have one WQE per pending packet For striding RQ, multiple packets can fit into one WQE. For better user experience we normalize the rx_pending parameter (size of wqe/mtu) as the average ring size in case of striding RQ. Fixes: 461017cb006a ('net/mlx5e: Support RX multi-packet WQE ...') Signed-off-by: Eran Ben Elisha Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index 9cfe408..d0cf8fa 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -352,15 +352,61 @@ static void mlx5e_get_ethtool_stats(struct net_device *dev, sq_stats_desc, j); } +static u32 mlx5e_rx_wqes_to_packets(struct mlx5e_priv *priv, int rq_wq_type, + int num_wqe) +{ + int packets_per_wqe; + int stride_size; + int num_strides; + int wqe_size; + + if (rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) + return num_wqe; + + stride_size = 1 << priv->params.mpwqe_log_stride_sz; + num_strides = 1 << priv->params.mpwqe_log_num_strides; + wqe_size = stride_size * num_strides; + + packets_per_wqe = wqe_size / + ALIGN(ETH_DATA_LEN, stride_size); + return (1 << (order_base_2(num_wqe * packets_per_wqe) - 1)); +} + +static u32 mlx5e_packets_to_rx_wqes(struct mlx5e_priv *priv, int rq_wq_type, + int num_packets) +{ + int packets_per_wqe; + int stride_size; + int num_strides; + int wqe_size; + int num_wqes; + + if (rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) + return num_packets; + + stride_size = 1 << priv->params.mpwqe_log_stride_sz; + num_strides = 1 << priv->params.mpwqe_log_num_strides; + wqe_size = stride_size * num_strides; + + num_packets = (1 << order_base_2(num_packets)); + + packets_per_wqe = wqe_size / + ALIGN(ETH_DATA_LEN, stride_size); + num_wqes = DIV_ROUND_UP(num_packets, packets_per_wqe); + return 1 << (order_base_2(num_wqes)); +} + static void mlx5e_get_ringparam(struct net_device *dev, struct ethtool_ringparam *param) { struct mlx5e_priv *priv = netdev_priv(dev); int rq_wq_type = priv->params.rq_wq_type; - param->rx_max_pending = 1 << mlx5_max_log_rq_size(rq_wq_type); + param->rx_max_pending = mlx5e_rx_wqes_to_packets(priv, rq_wq_type, + 1 << mlx5_max_log_rq_size(rq_wq_type)); param->tx_max_pending = 1 << MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE; - param->rx_pending = 1 << priv->params.log_rq_size; + param->rx_pending = mlx5e_rx_wqes_to_packets(priv, rq_wq_type, + 1 << priv->params.log_rq_size); param->tx_pending = 1 << priv->params.log_sq_size; } @@ -370,6 +416,9 @@ static int mlx5e_set_ringparam(struct net_device *dev, struct mlx5e_priv *priv = netdev_priv(dev); bool was_opened; int rq_wq_type = priv->params.rq_wq_type; + u32 rx_pending_wqes; + u32 min_rq_size; + u32 max_rq_size; u16 min_rx_wqes; u8 log_rq_size; u8 log_sq_size; @@ -386,20 +435,29 @@ static int mlx5e_set_ringparam(struct net_device *dev, __func__); return -EINVAL; } - if (param->rx_pending < (1 << mlx5_min_log_rq_size(rq_wq_type))) { + + min_rq_size = mlx5e_rx_wqes_to_packets(priv, rq_wq_type, + 1 << mlx5_min_log_rq_size(rq_wq_type)); + max_rq_size = mlx5e_rx_wqes_to_packets(priv, rq_wq_type, + 1 << mlx5_max_log_rq_size(rq_wq_type)); + rx_pending_wqes = mlx5e_packets_to_rx_wqes(priv, rq_wq_type, + param->rx_pending); + + if (param->rx_pending < min_rq_size) { netdev_info(dev, "%s: rx_pending (%d) < min (%d)\n", __func__, param->rx_pending, - 1 << mlx5_min_log_rq_size(rq_wq_type)); + min_rq_size); return -EINVAL; } - if (param->rx_pending > (1 << mlx5_max_log_rq_size(rq_wq_type))) { + if (param->rx_pending > max_rq_size) { netdev_info(dev, "%s: rx_pending (%d) > max (%d)\n", __func__, param->rx_pending, - 1 << mlx5_max_log_rq_size(rq_wq_type)); + max_rq_size); return -EINVAL; } - num_mtts = MLX5E_REQUIRED_MTTS(priv->params.num_channels, param->rx_pending); + num_mtts = MLX5E_REQUIRED_MTTS(priv->params.num_channels, + rx_pending_wqes); if (priv->params.rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ && !MLX5E_VALID_NUM_MTTS(num_mtts)) { netdev_info(dev, "%s: rx_pending (%d) request can't be satisfied, try to reduce.\n", @@ -420,9 +478,9 @@ static int mlx5e_set_ringparam(struct net_device *dev, return -EINVAL; } - log_rq_size = order_base_2(param->rx_pending); + log_rq_size = order_base_2(rx_pending_wqes); log_sq_size = order_base_2(param->tx_pending); - min_rx_wqes = mlx5_min_rx_wqes(rq_wq_type, param->rx_pending); + min_rx_wqes = mlx5_min_rx_wqes(rq_wq_type, rx_pending_wqes); if (log_rq_size == priv->params.log_rq_size && log_sq_size == priv->params.log_sq_size && -- cgit v0.10.2 From c8cf78fe100b0d152a1932327c24cefc0ba4bdbe Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Mon, 29 Aug 2016 01:13:47 +0300 Subject: net/mlx5e: Add ethtool counter for TX xmit_more Add a counter in ethtool for the number of times that TX xmit_more was used. Signed-off-by: Tariq Toukan Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 297781a..2459c7f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -155,6 +155,7 @@ static void mlx5e_update_sw_counters(struct mlx5e_priv *priv) s->tx_queue_stopped += sq_stats->stopped; s->tx_queue_wake += sq_stats->wake; s->tx_queue_dropped += sq_stats->dropped; + s->tx_xmit_more += sq_stats->xmit_more; s->tx_csum_partial_inner += sq_stats->csum_partial_inner; tx_offload_none += sq_stats->csum_none; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h index 7b9d8a9..499487c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h @@ -70,6 +70,7 @@ struct mlx5e_sw_stats { u64 tx_queue_stopped; u64 tx_queue_wake; u64 tx_queue_dropped; + u64 tx_xmit_more; u64 rx_wqe_err; u64 rx_mpwqe_filler; u64 rx_mpwqe_frag; @@ -101,6 +102,7 @@ static const struct counter_desc sw_stats_desc[] = { { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_stopped) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_wake) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_dropped) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_xmit_more) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_wqe_err) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_mpwqe_filler) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_mpwqe_frag) }, @@ -298,6 +300,7 @@ struct mlx5e_sq_stats { /* commonly accessed in data path */ u64 packets; u64 bytes; + u64 xmit_more; u64 tso_packets; u64 tso_bytes; u64 tso_inner_packets; @@ -324,6 +327,7 @@ static const struct counter_desc sq_stats_desc[] = { { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, stopped) }, { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, wake) }, { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, dropped) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, xmit_more) }, }; #define NUM_SW_COUNTERS ARRAY_SIZE(sw_stats_desc) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index 5f209ad..988eca9 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -375,6 +375,7 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb) sq->stats.packets++; sq->stats.bytes += num_bytes; + sq->stats.xmit_more += skb->xmit_more; return NETDEV_TX_OK; dma_unmap_wqe_err: -- cgit v0.10.2 From bf50082c15eb2bc47d1922e70f424c57f36646d5 Mon Sep 17 00:00:00 2001 From: Kamal Heib Date: Mon, 29 Aug 2016 01:13:48 +0300 Subject: net/mlx5e: Fix memory leak if refreshing TIRs fails Free 'in' command object also when mlx5_core_modify_tir fails. Fixes: 724b2aa15126 ("net/mlx5e: TIRs management refactoring") Signed-off-by: Kamal Heib Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c index 673043c..9cce153 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c @@ -139,7 +139,7 @@ int mlx5e_refresh_tirs_self_loopback_enable(struct mlx5_core_dev *mdev) struct mlx5e_tir *tir; void *in; int inlen; - int err; + int err = 0; inlen = MLX5_ST_SZ_BYTES(modify_tir_in); in = mlx5_vzalloc(inlen); @@ -151,10 +151,11 @@ int mlx5e_refresh_tirs_self_loopback_enable(struct mlx5_core_dev *mdev) list_for_each_entry(tir, &mdev->mlx5e_res.td.tirs_list, list) { err = mlx5_core_modify_tir(mdev, tir->tirn, in, inlen); if (err) - return err; + goto out; } +out: kvfree(in); - return 0; + return err; } -- cgit v0.10.2 From 1722b9694ecfbc602865017c3fa6da0e3ec234d8 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Mon, 29 Aug 2016 01:13:49 +0300 Subject: net/mlx5: Add error prints when validate ETS failed Upon set ETS failure due to user invalid input, add error prints to specify the exact error to the user. Fixes: cdcf11212b22 ('net/mlx5e: Validate BW weight values of ETS') Signed-off-by: Eran Ben Elisha Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c index caa9a3c..762af16 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c @@ -127,29 +127,40 @@ int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets) return mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw); } -static int mlx5e_dbcnl_validate_ets(struct ieee_ets *ets) +static int mlx5e_dbcnl_validate_ets(struct net_device *netdev, + struct ieee_ets *ets) { int bw_sum = 0; int i; /* Validate Priority */ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { - if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) + if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) { + netdev_err(netdev, + "Failed to validate ETS: priority value greater than max(%d)\n", + MLX5E_MAX_PRIORITY); return -EINVAL; + } } /* Validate Bandwidth Sum */ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) { - if (!ets->tc_tx_bw[i]) + if (!ets->tc_tx_bw[i]) { + netdev_err(netdev, + "Failed to validate ETS: BW 0 is illegal\n"); return -EINVAL; + } bw_sum += ets->tc_tx_bw[i]; } } - if (bw_sum != 0 && bw_sum != 100) + if (bw_sum != 0 && bw_sum != 100) { + netdev_err(netdev, + "Failed to validate ETS: BW sum is illegal\n"); return -EINVAL; + } return 0; } @@ -159,7 +170,7 @@ static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev, struct mlx5e_priv *priv = netdev_priv(netdev); int err; - err = mlx5e_dbcnl_validate_ets(ets); + err = mlx5e_dbcnl_validate_ets(netdev, ets); if (err) return err; -- cgit v0.10.2 From e5835f2833b12808c53aa621d1d3aa085706b5b3 Mon Sep 17 00:00:00 2001 From: Maor Gottlieb Date: Mon, 29 Aug 2016 01:13:50 +0300 Subject: net/mlx5: Increase number of ethtool steering priorities Ethtool has 11 flow tables, each flow table has its own priority. Increase the number of priorities to be aligned with the number of flow tables. Fixes: 1174fce8d141 ('net/mlx5e: Support l3/l4 flow type specs in ethtool flow steering') Signed-off-by: Maor Gottlieb Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index 75bb8c8..3d6c1f6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -80,7 +80,7 @@ LEFTOVERS_NUM_PRIOS) #define ETHTOOL_PRIO_NUM_LEVELS 1 -#define ETHTOOL_NUM_PRIOS 10 +#define ETHTOOL_NUM_PRIOS 11 #define ETHTOOL_MIN_LEVEL (KERNEL_MIN_LEVEL + ETHTOOL_NUM_PRIOS) /* Vlan, mac, ttc, aRFS */ #define KERNEL_NIC_PRIO_NUM_LEVELS 4 -- cgit v0.10.2 From 7d13eca09ed5e477f6ecfd97a35058762228b5e4 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Sat, 27 Aug 2016 15:34:20 -0700 Subject: Documentation: networking: dsa: Remove platform device TODO Since commit 83c0afaec7b7 ("net: dsa: Add new binding implementation"), the shortcomings of the dsa platform device have been addressed, remove that TODO item. Signed-off-by: Florian Fainelli Acked-by: Andrew Lunn Signed-off-by: David S. Miller diff --git a/Documentation/networking/dsa/dsa.txt b/Documentation/networking/dsa/dsa.txt index 9d05ed7..f20c884 100644 --- a/Documentation/networking/dsa/dsa.txt +++ b/Documentation/networking/dsa/dsa.txt @@ -587,26 +587,6 @@ of DSA, would be the its port-based VLAN, used by the associated bridge device. TODO ==== -The platform device problem ---------------------------- -DSA is currently implemented as a platform device driver which is far from ideal -as was discussed in this thread: - -http://permalink.gmane.org/gmane.linux.network/329848 - -This basically prevents the device driver model to be properly used and applied, -and support non-MDIO, non-MMIO Ethernet connected switches. - -Another problem with the platform device driver approach is that it prevents the -use of a modular switch drivers build due to a circular dependency, illustrated -here: - -http://comments.gmane.org/gmane.linux.network/345803 - -Attempts of reworking this has been done here: - -https://lwn.net/Articles/643149/ - Making SWITCHDEV and DSA converge towards an unified codebase ------------------------------------------------------------- -- cgit v0.10.2 From 2fb04fdf30192ff1e2b5834e9b7745889ea8bbcb Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 27 Aug 2016 17:33:03 +0100 Subject: net: smc91x: fix SMC accesses Commit b70661c70830 ("net: smc91x: use run-time configuration on all ARM machines") broke some ARM platforms through several mistakes. Firstly, the access size must correspond to the following rule: (a) at least one of 16-bit or 8-bit access size must be supported (b) 32-bit accesses are optional, and may be enabled in addition to the above. Secondly, it provides no emulation of 16-bit accesses, instead blindly making 16-bit accesses even when the platform specifies that only 8-bit is supported. Reorganise smc91x.h so we can make use of the existing 16-bit access emulation already provided - if 16-bit accesses are supported, use 16-bit accesses directly, otherwise if 8-bit accesses are supported, use the provided 16-bit access emulation. If neither, BUG(). This exactly reflects the driver behaviour prior to the commit being fixed. Since the conversion incorrectly cut down the available access sizes on several platforms, we also need to go through every platform and fix up the overly-restrictive access size: Arnd assumed that if a platform can perform 32-bit, 16-bit and 8-bit accesses, then only a 32-bit access size needed to be specified - not so, all available access sizes must be specified. This likely fixes some performance regressions in doing this: if a platform does not support 8-bit accesses, 8-bit accesses have been emulated by performing a 16-bit read-modify-write access. Tested on the Intel Assabet/Neponset platform, which supports only 8-bit accesses, which was broken by the original commit. Fixes: b70661c70830 ("net: smc91x: use run-time configuration on all ARM machines") Signed-off-by: Russell King Tested-by: Robert Jarzmik Signed-off-by: David S. Miller diff --git a/arch/arm/mach-pxa/idp.c b/arch/arm/mach-pxa/idp.c index c410d84..66070ac 100644 --- a/arch/arm/mach-pxa/idp.c +++ b/arch/arm/mach-pxa/idp.c @@ -83,7 +83,8 @@ static struct resource smc91x_resources[] = { }; static struct smc91x_platdata smc91x_platdata = { - .flags = SMC91X_USE_32BIT | SMC91X_USE_DMA | SMC91X_NOWAIT, + .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT | + SMC91X_USE_DMA | SMC91X_NOWAIT, }; static struct platform_device smc91x_device = { diff --git a/arch/arm/mach-pxa/xcep.c b/arch/arm/mach-pxa/xcep.c index 3f06cd9..056369e 100644 --- a/arch/arm/mach-pxa/xcep.c +++ b/arch/arm/mach-pxa/xcep.c @@ -120,7 +120,8 @@ static struct resource smc91x_resources[] = { }; static struct smc91x_platdata xcep_smc91x_info = { - .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA, + .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT | + SMC91X_NOWAIT | SMC91X_USE_DMA, }; static struct platform_device smc91x_device = { diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c index baf1745..a0ead0a 100644 --- a/arch/arm/mach-realview/core.c +++ b/arch/arm/mach-realview/core.c @@ -93,7 +93,8 @@ static struct smsc911x_platform_config smsc911x_config = { }; static struct smc91x_platdata smc91x_platdata = { - .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT, + .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT | + SMC91X_NOWAIT, }; static struct platform_device realview_eth_device = { diff --git a/arch/arm/mach-sa1100/pleb.c b/arch/arm/mach-sa1100/pleb.c index 1525d7b..88149f8 100644 --- a/arch/arm/mach-sa1100/pleb.c +++ b/arch/arm/mach-sa1100/pleb.c @@ -45,7 +45,7 @@ static struct resource smc91x_resources[] = { }; static struct smc91x_platdata smc91x_platdata = { - .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT, + .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT, }; static struct platform_device smc91x_device = { diff --git a/arch/blackfin/mach-bf561/boards/cm_bf561.c b/arch/blackfin/mach-bf561/boards/cm_bf561.c index c6db52b..10c5777 100644 --- a/arch/blackfin/mach-bf561/boards/cm_bf561.c +++ b/arch/blackfin/mach-bf561/boards/cm_bf561.c @@ -146,7 +146,8 @@ static struct platform_device hitachi_fb_device = { #include static struct smc91x_platdata smc91x_info = { - .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT, + .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT | + SMC91X_NOWAIT, .leda = RPC_LED_100_10, .ledb = RPC_LED_TX_RX, }; diff --git a/arch/blackfin/mach-bf561/boards/ezkit.c b/arch/blackfin/mach-bf561/boards/ezkit.c index f35525b..57d1c43 100644 --- a/arch/blackfin/mach-bf561/boards/ezkit.c +++ b/arch/blackfin/mach-bf561/boards/ezkit.c @@ -134,7 +134,8 @@ static struct platform_device net2272_bfin_device = { #include static struct smc91x_platdata smc91x_info = { - .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT, + .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT | + SMC91X_NOWAIT, .leda = RPC_LED_100_10, .ledb = RPC_LED_TX_RX, }; diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 726b80f..503a3b6 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -2275,6 +2275,13 @@ static int smc_drv_probe(struct platform_device *pdev) if (pd) { memcpy(&lp->cfg, pd, sizeof(lp->cfg)); lp->io_shift = SMC91X_IO_SHIFT(lp->cfg.flags); + + if (!SMC_8BIT(lp) && !SMC_16BIT(lp)) { + dev_err(&pdev->dev, + "at least one of 8-bit or 16-bit access support is required.\n"); + ret = -ENXIO; + goto out_free_netdev; + } } #if IS_BUILTIN(CONFIG_OF) diff --git a/drivers/net/ethernet/smsc/smc91x.h b/drivers/net/ethernet/smsc/smc91x.h index 1a55c79..e17671c 100644 --- a/drivers/net/ethernet/smsc/smc91x.h +++ b/drivers/net/ethernet/smsc/smc91x.h @@ -37,6 +37,27 @@ #include /* + * Any 16-bit access is performed with two 8-bit accesses if the hardware + * can't do it directly. Most registers are 16-bit so those are mandatory. + */ +#define SMC_outw_b(x, a, r) \ + do { \ + unsigned int __val16 = (x); \ + unsigned int __reg = (r); \ + SMC_outb(__val16, a, __reg); \ + SMC_outb(__val16 >> 8, a, __reg + (1 << SMC_IO_SHIFT)); \ + } while (0) + +#define SMC_inw_b(a, r) \ + ({ \ + unsigned int __val16; \ + unsigned int __reg = r; \ + __val16 = SMC_inb(a, __reg); \ + __val16 |= SMC_inb(a, __reg + (1 << SMC_IO_SHIFT)) << 8; \ + __val16; \ + }) + +/* * Define your architecture specific bus configuration parameters here. */ @@ -55,10 +76,30 @@ #define SMC_IO_SHIFT (lp->io_shift) #define SMC_inb(a, r) readb((a) + (r)) -#define SMC_inw(a, r) readw((a) + (r)) +#define SMC_inw(a, r) \ + ({ \ + unsigned int __smc_r = r; \ + SMC_16BIT(lp) ? readw((a) + __smc_r) : \ + SMC_8BIT(lp) ? SMC_inw_b(a, __smc_r) : \ + ({ BUG(); 0; }); \ + }) + #define SMC_inl(a, r) readl((a) + (r)) #define SMC_outb(v, a, r) writeb(v, (a) + (r)) +#define SMC_outw(v, a, r) \ + do { \ + unsigned int __v = v, __smc_r = r; \ + if (SMC_16BIT(lp)) \ + __SMC_outw(__v, a, __smc_r); \ + else if (SMC_8BIT(lp)) \ + SMC_outw_b(__v, a, __smc_r); \ + else \ + BUG(); \ + } while (0) + #define SMC_outl(v, a, r) writel(v, (a) + (r)) +#define SMC_insb(a, r, p, l) readsb((a) + (r), p, l) +#define SMC_outsb(a, r, p, l) writesb((a) + (r), p, l) #define SMC_insw(a, r, p, l) readsw((a) + (r), p, l) #define SMC_outsw(a, r, p, l) writesw((a) + (r), p, l) #define SMC_insl(a, r, p, l) readsl((a) + (r), p, l) @@ -66,7 +107,7 @@ #define SMC_IRQ_FLAGS (-1) /* from resource */ /* We actually can't write halfwords properly if not word aligned */ -static inline void SMC_outw(u16 val, void __iomem *ioaddr, int reg) +static inline void __SMC_outw(u16 val, void __iomem *ioaddr, int reg) { if ((machine_is_mainstone() || machine_is_stargate2() || machine_is_pxa_idp()) && reg & 2) { @@ -416,24 +457,8 @@ smc_pxa_dma_insw(void __iomem *ioaddr, struct smc_local *lp, int reg, int dma, #if ! SMC_CAN_USE_16BIT -/* - * Any 16-bit access is performed with two 8-bit accesses if the hardware - * can't do it directly. Most registers are 16-bit so those are mandatory. - */ -#define SMC_outw(x, ioaddr, reg) \ - do { \ - unsigned int __val16 = (x); \ - SMC_outb( __val16, ioaddr, reg ); \ - SMC_outb( __val16 >> 8, ioaddr, reg + (1 << SMC_IO_SHIFT));\ - } while (0) -#define SMC_inw(ioaddr, reg) \ - ({ \ - unsigned int __val16; \ - __val16 = SMC_inb( ioaddr, reg ); \ - __val16 |= SMC_inb( ioaddr, reg + (1 << SMC_IO_SHIFT)) << 8; \ - __val16; \ - }) - +#define SMC_outw(x, ioaddr, reg) SMC_outw_b(x, ioaddr, reg) +#define SMC_inw(ioaddr, reg) SMC_inw_b(ioaddr, reg) #define SMC_insw(a, r, p, l) BUG() #define SMC_outsw(a, r, p, l) BUG() diff --git a/include/linux/smc91x.h b/include/linux/smc91x.h index 76199b7..e302c44 100644 --- a/include/linux/smc91x.h +++ b/include/linux/smc91x.h @@ -1,6 +1,16 @@ #ifndef __SMC91X_H__ #define __SMC91X_H__ +/* + * These bits define which access sizes a platform can support, rather + * than the maximal access size. So, if your platform can do 16-bit + * and 32-bit accesses to the SMC91x device, but not 8-bit, set both + * SMC91X_USE_16BIT and SMC91X_USE_32BIT. + * + * The SMC91x driver requires at least one of SMC91X_USE_8BIT or + * SMC91X_USE_16BIT to be supported - just setting SMC91X_USE_32BIT is + * an invalid configuration. + */ #define SMC91X_USE_8BIT (1 << 0) #define SMC91X_USE_16BIT (1 << 1) #define SMC91X_USE_32BIT (1 << 2) -- cgit v0.10.2 From b99b43bb4bdf1d361f7487cf03d803082bbf9101 Mon Sep 17 00:00:00 2001 From: Owen Lin Date: Fri, 26 Aug 2016 13:49:09 +0800 Subject: Add Killer E2500 device ID in alx driver. Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/atheros/alx/main.c b/drivers/net/ethernet/atheros/alx/main.c index 6453148..4eb17da 100644 --- a/drivers/net/ethernet/atheros/alx/main.c +++ b/drivers/net/ethernet/atheros/alx/main.c @@ -1545,6 +1545,8 @@ static const struct pci_device_id alx_pci_tbl[] = { .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_E2400), .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, + { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_E2500), + .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_AR8162), .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG }, { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_AR8171) }, diff --git a/drivers/net/ethernet/atheros/alx/reg.h b/drivers/net/ethernet/atheros/alx/reg.h index 0959e68..1fc2d85 100644 --- a/drivers/net/ethernet/atheros/alx/reg.h +++ b/drivers/net/ethernet/atheros/alx/reg.h @@ -38,6 +38,7 @@ #define ALX_DEV_ID_AR8161 0x1091 #define ALX_DEV_ID_E2200 0xe091 #define ALX_DEV_ID_E2400 0xe0a1 +#define ALX_DEV_ID_E2500 0xe0b1 #define ALX_DEV_ID_AR8162 0x1090 #define ALX_DEV_ID_AR8171 0x10A1 #define ALX_DEV_ID_AR8172 0x10A0 -- cgit v0.10.2 From f48d1496b8537d75776478c6942dd87f34d7f270 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 15 Aug 2016 18:25:17 -0400 Subject: platform/olpc: Make ec explicitly non-modular The Kconfig entry controlling compilation of this code is: arch/x86/Kconfig:config OLPC arch/x86/Kconfig: bool "One Laptop Per Child support" ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modular infrastructure use, so that when reading the driver there is no doubt it is builtin-only. We delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: platform-driver-x86@vger.kernel.org Signed-off-by: Paul Gortmaker Acked-by: Andres Salomon Signed-off-by: Darren Hart diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index f99b183..374a802 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -1,6 +1,8 @@ /* * Generic driver for the OLPC Embedded Controller. * + * Author: Andres Salomon + * * Copyright (C) 2011-2012 One Laptop per Child Foundation. * * Licensed under the GPL v2 or later. @@ -12,7 +14,7 @@ #include #include #include -#include +#include #include #include #include @@ -326,8 +328,4 @@ static int __init olpc_ec_init_module(void) { return platform_driver_register(&olpc_ec_plat_driver); } - arch_initcall(olpc_ec_init_module); - -MODULE_AUTHOR("Andres Salomon "); -MODULE_LICENSE("GPL"); -- cgit v0.10.2 From da43bf0c21e57fff0221da5de0a9a388ec0d27cd Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 15 Aug 2016 18:24:59 -0400 Subject: intel_pmic_gpio: Make explicitly non-modular The Kconfig entry controlling compilation of this code is: drivers/platform/x86/Kconfig:config GPIO_INTEL_PMIC drivers/platform/x86/Kconfig: bool "Intel PMIC GPIO support" ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modular infrastructure use, so that when reading the driver there is no doubt it is builtin-only. We delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. We don't replace module.h with init.h since the file already has that. Cc: Alek Du Cc: platform-driver-x86@vger.kernel.org Signed-off-by: Paul Gortmaker Signed-off-by: Darren Hart diff --git a/drivers/platform/x86/intel_pmic_gpio.c b/drivers/platform/x86/intel_pmic_gpio.c index 63b371d..91ae585 100644 --- a/drivers/platform/x86/intel_pmic_gpio.c +++ b/drivers/platform/x86/intel_pmic_gpio.c @@ -1,6 +1,8 @@ /* Moorestown PMIC GPIO (access through IPC) driver * Copyright (c) 2008 - 2009, Intel Corporation. * + * Author: Alek Du + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. @@ -21,7 +23,6 @@ #define pr_fmt(fmt) "%s: " fmt, __func__ -#include #include #include #include @@ -322,9 +323,4 @@ static int __init platform_pmic_gpio_init(void) { return platform_driver_register(&platform_pmic_gpio_driver); } - subsys_initcall(platform_pmic_gpio_init); - -MODULE_AUTHOR("Alek Du "); -MODULE_DESCRIPTION("Intel Moorestown PMIC GPIO driver"); -MODULE_LICENSE("GPL v2"); -- cgit v0.10.2 From 6654674cb7b5953ac04fc9d7f5f511676ae97e29 Mon Sep 17 00:00:00 2001 From: Jorik Jonker Date: Sat, 27 Aug 2016 21:04:33 +0200 Subject: clk: sunxi-ng: Fix wrong reset register offsets The reset register offsets for UART*, I2C* and SCR were off by a few bytes. Signed-off-by: Jorik Jonker Signed-off-by: Maxime Ripard diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-h3.c b/drivers/clk/sunxi-ng/ccu-sun8i-h3.c index 9af35954..267f995 100644 --- a/drivers/clk/sunxi-ng/ccu-sun8i-h3.c +++ b/drivers/clk/sunxi-ng/ccu-sun8i-h3.c @@ -783,14 +783,14 @@ static struct ccu_reset_map sun8i_h3_ccu_resets[] = { [RST_BUS_I2S1] = { 0x2d0, BIT(13) }, [RST_BUS_I2S2] = { 0x2d0, BIT(14) }, - [RST_BUS_I2C0] = { 0x2d4, BIT(0) }, - [RST_BUS_I2C1] = { 0x2d4, BIT(1) }, - [RST_BUS_I2C2] = { 0x2d4, BIT(2) }, - [RST_BUS_UART0] = { 0x2d4, BIT(16) }, - [RST_BUS_UART1] = { 0x2d4, BIT(17) }, - [RST_BUS_UART2] = { 0x2d4, BIT(18) }, - [RST_BUS_UART3] = { 0x2d4, BIT(19) }, - [RST_BUS_SCR] = { 0x2d4, BIT(20) }, + [RST_BUS_I2C0] = { 0x2d8, BIT(0) }, + [RST_BUS_I2C1] = { 0x2d8, BIT(1) }, + [RST_BUS_I2C2] = { 0x2d8, BIT(2) }, + [RST_BUS_UART0] = { 0x2d8, BIT(16) }, + [RST_BUS_UART1] = { 0x2d8, BIT(17) }, + [RST_BUS_UART2] = { 0x2d8, BIT(18) }, + [RST_BUS_UART3] = { 0x2d8, BIT(19) }, + [RST_BUS_SCR] = { 0x2d8, BIT(20) }, }; static const struct sunxi_ccu_desc sun8i_h3_ccu_desc = { -- cgit v0.10.2 From 6b760bb2c63a9e322c0e4a0b5daf335ad93d5a33 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Mon, 29 Aug 2016 00:33:50 +0200 Subject: ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE I got this: divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 1327 Comm: a.out Not tainted 4.8.0-rc2+ #189 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014 task: ffff8801120a9580 task.stack: ffff8801120b0000 RIP: 0010:[] [] snd_hrtimer_callback+0x1da/0x3f0 RSP: 0018:ffff88011aa87da8 EFLAGS: 00010006 RAX: 0000000000004f76 RBX: ffff880112655e88 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff880112655ea0 RDI: 0000000000000001 RBP: ffff88011aa87e00 R08: ffff88013fff905c R09: ffff88013fff9048 R10: ffff88013fff9050 R11: 00000001050a7b8c R12: ffff880114778a00 R13: ffff880114778ab4 R14: ffff880114778b30 R15: 0000000000000000 FS: 00007f071647c700(0000) GS:ffff88011aa80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000603001 CR3: 0000000112021000 CR4: 00000000000006e0 Stack: 0000000000000000 ffff880114778ab8 ffff880112655ea0 0000000000004f76 ffff880112655ec8 ffff880112655e80 ffff880112655e88 ffff88011aa98fc0 00000000b97ccf2b dffffc0000000000 ffff88011aa98fc0 ffff88011aa87ef0 Call Trace: [] __hrtimer_run_queues+0x347/0xa00 [] ? snd_hrtimer_close+0x130/0x130 [] ? retrigger_next_event+0x1b0/0x1b0 [] ? hrtimer_interrupt+0x136/0x4b0 [] hrtimer_interrupt+0x1b0/0x4b0 [] local_apic_timer_interrupt+0x6e/0xf0 [] ? kvm_guest_apic_eoi_write+0x13/0xc0 [] smp_apic_timer_interrupt+0x76/0xa0 [] apic_timer_interrupt+0x8c/0xa0 [] ? _raw_spin_unlock_irqrestore+0x2c/0x60 [] snd_timer_start1+0xdd/0x670 [] snd_timer_continue+0x45/0x80 [] snd_timer_user_ioctl+0x1030/0x2830 [] ? __follow_pte.isra.49+0x430/0x430 [] ? snd_timer_pause+0x80/0x80 [] ? do_wp_page+0x3aa/0x1c90 [] ? handle_mm_fault+0xbc8/0x27f0 [] ? __pmd_alloc+0x370/0x370 [] ? snd_timer_pause+0x80/0x80 [] do_vfs_ioctl+0x193/0x1050 [] ? ioctl_preallocate+0x200/0x200 [] ? syscall_trace_enter+0x3cf/0xdb0 [] ? __context_tracking_exit.part.4+0x9a/0x1e0 [] ? exit_to_usermode_loop+0x190/0x190 [] ? check_preemption_disabled+0x37/0x1e0 [] ? security_file_ioctl+0x89/0xb0 [] SyS_ioctl+0x8f/0xc0 [] ? do_vfs_ioctl+0x1050/0x1050 [] do_syscall_64+0x1c4/0x4e0 [] entry_SYSCALL64_slow_path+0x25/0x25 Code: e8 fc 42 7b fe 8b 0d 06 8a 50 03 49 0f af cf 48 85 c9 0f 88 7c 01 00 00 48 89 4d a8 e8 e0 42 7b fe 48 8b 45 c0 48 8b 4d a8 48 99 <48> f7 f9 49 01 c7 e8 cb 42 7b fe 48 8b 55 d0 48 b8 00 00 00 00 RIP [] snd_hrtimer_callback+0x1da/0x3f0 RSP ---[ end trace 6aa380f756a21074 ]--- The problem happens when you call ioctl(SNDRV_TIMER_IOCTL_CONTINUE) on a completely new/unused timer -- it will have ->sticks == 0, which causes a divide by 0 in snd_hrtimer_callback(). Signed-off-by: Vegard Nossum Cc: Signed-off-by: Takashi Iwai diff --git a/sound/core/timer.c b/sound/core/timer.c index 9a6157e..0061870 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -813,6 +813,7 @@ int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid, timer->tmr_subdevice = tid->subdevice; if (id) strlcpy(timer->id, id, sizeof(timer->id)); + timer->sticks = 1; INIT_LIST_HEAD(&timer->device_list); INIT_LIST_HEAD(&timer->open_list_head); INIT_LIST_HEAD(&timer->active_list_head); -- cgit v0.10.2 From 8ddc05638ee42b18ba4fe99b5fb647fa3ad20456 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Mon, 29 Aug 2016 00:33:51 +0200 Subject: ALSA: timer: fix NULL pointer dereference on memory allocation failure I hit this with syzkaller: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1327 Comm: a.out Not tainted 4.8.0-rc2+ #190 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014 task: ffff88011278d600 task.stack: ffff8801120c0000 RIP: 0010:[] [] snd_hrtimer_start+0x77/0x100 RSP: 0018:ffff8801120c7a60 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000007 RDX: 0000000000000009 RSI: 1ffff10023483091 RDI: 0000000000000048 RBP: ffff8801120c7a78 R08: ffff88011a5cf768 R09: ffff88011a5ba790 R10: 0000000000000002 R11: ffffed00234b9ef1 R12: ffff880114843980 R13: ffffffff84213c00 R14: ffff880114843ab0 R15: 0000000000000286 FS: 00007f72958f3700(0000) GS:ffff88011aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000603001 CR3: 00000001126ab000 CR4: 00000000000006f0 Stack: ffff880114843980 ffff880111eb2dc0 ffff880114843a34 ffff8801120c7ad0 ffffffff82c81ab1 0000000000000000 ffffffff842138e0 0000000100000000 ffff880111eb2dd0 ffff880111eb2dc0 0000000000000001 ffff880111eb2dc0 Call Trace: [] snd_timer_start1+0x331/0x670 [] snd_timer_start+0x5d/0xa0 [] snd_timer_user_ioctl+0x88e/0x2830 [] ? __follow_pte.isra.49+0x430/0x430 [] ? snd_timer_pause+0x80/0x80 [] ? do_wp_page+0x3aa/0x1c90 [] ? put_prev_entity+0x108f/0x21a0 [] ? snd_timer_pause+0x80/0x80 [] do_vfs_ioctl+0x193/0x1050 [] ? cpuacct_account_field+0x12f/0x1a0 [] ? ioctl_preallocate+0x200/0x200 [] ? syscall_trace_enter+0x3cf/0xdb0 [] ? __context_tracking_exit.part.4+0x9a/0x1e0 [] ? exit_to_usermode_loop+0x190/0x190 [] ? check_preemption_disabled+0x37/0x1e0 [] ? security_file_ioctl+0x89/0xb0 [] SyS_ioctl+0x8f/0xc0 [] ? do_vfs_ioctl+0x1050/0x1050 [] do_syscall_64+0x1c4/0x4e0 [] entry_SYSCALL64_slow_path+0x25/0x25 Code: c7 c7 c4 b9 c8 82 48 89 d9 4c 89 ee e8 63 88 7f fe e8 7e 46 7b fe 48 8d 7b 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 84 c0 7e 65 80 7b 48 00 74 0e e8 52 46 RIP [] snd_hrtimer_start+0x77/0x100 RSP ---[ end trace 5955b08db7f2b029 ]--- This can happen if snd_hrtimer_open() fails to allocate memory and returns an error, which is currently not checked by snd_timer_open(): ioctl(SNDRV_TIMER_IOCTL_SELECT) - snd_timer_user_tselect() - snd_timer_close() - snd_hrtimer_close() - (struct snd_timer *) t->private_data = NULL - snd_timer_open() - snd_hrtimer_open() - kzalloc() fails; t->private_data is still NULL ioctl(SNDRV_TIMER_IOCTL_START) - snd_timer_user_start() - snd_timer_start() - snd_timer_start1() - snd_hrtimer_start() - t->private_data == NULL // boom Signed-off-by: Vegard Nossum Cc: Signed-off-by: Takashi Iwai diff --git a/sound/core/timer.c b/sound/core/timer.c index 0061870..2d6e3e7 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -294,8 +294,21 @@ int snd_timer_open(struct snd_timer_instance **ti, get_device(&timer->card->card_dev); timeri->slave_class = tid->dev_sclass; timeri->slave_id = slave_id; - if (list_empty(&timer->open_list_head) && timer->hw.open) - timer->hw.open(timer); + + if (list_empty(&timer->open_list_head) && timer->hw.open) { + int err = timer->hw.open(timer); + if (err) { + kfree(timeri->owner); + kfree(timeri); + + if (timer->card) + put_device(&timer->card->card_dev); + module_put(timer->module); + mutex_unlock(®ister_mutex); + return err; + } + } + list_add_tail(&timeri->open_list, &timer->open_list_head); snd_timer_check_master(timeri); mutex_unlock(®ister_mutex); -- cgit v0.10.2 From 98744b408c757901df57fa50cbd5826245dc3a1f Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 29 Aug 2016 08:44:03 +0200 Subject: clocksource/drivers/atmel-pit: Fix compilation error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The previous fix introduced a check against the ret variable which is not defined, hence producing a compilation error: linux/drivers/clocksource/timer-atmel-pit.c: In function ‘at91sam926x_pit_dt_init’: linux/drivers/clocksource/timer-atmel-pit.c:264:2: error: ‘ret’ undeclared (first use in this function) ret = clk_prepare_enable(data->mck); ^ linux/drivers/clocksource/timer-atmel-pit.c:264:2: note: each undeclared identifier is reported only once for each function it appears in Add the missing the variable 'ret'. Fixes: 504f34c9e45c "clocksource/drivers/atmel-pit: Convert init function to return error" Signed-off-by: Daniel Lezcano Cc: alexandre.belloni@free-electrons.com Cc: motobud@gmail.com Cc: realbright@lgcns.com Link: http://lkml.kernel.org/r/1472453043-24287-1-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Thomas Gleixner diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c index 3494bc5..7f0f5b2 100644 --- a/drivers/clocksource/timer-atmel-pit.c +++ b/drivers/clocksource/timer-atmel-pit.c @@ -240,6 +240,7 @@ static int __init at91sam926x_pit_common_init(struct pit_data *data) static int __init at91sam926x_pit_dt_init(struct device_node *node) { struct pit_data *data; + int ret; data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) -- cgit v0.10.2 From 3c3292634fc2de1ab97b6aa3222fee647f737adb Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 29 Aug 2016 13:18:23 +0200 Subject: hwmon: (it87) Add missing sysfs attribute group terminator Attribute array it87_attributes_in lacks its NULL terminator, causing random behavior when operating on the attribute group. Fixes: 52929715634a ("hwmon: (it87) Use is_visible for voltage sensors") Signed-off-by: Jean Delvare Cc: Martin Blumenstingl Cc: Guenter Roeck Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index d0203a1..4667012 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -2015,6 +2015,7 @@ static struct attribute *it87_attributes_in[] = { &sensor_dev_attr_in10_input.dev_attr.attr, /* 41 */ &sensor_dev_attr_in11_input.dev_attr.attr, /* 41 */ &sensor_dev_attr_in12_input.dev_attr.attr, /* 41 */ + NULL }; static const struct attribute_group it87_group_in = { -- cgit v0.10.2 From e0c6fba45ab730afc22fa01ac1c42459893252ec Mon Sep 17 00:00:00 2001 From: Rob Rice Date: Mon, 1 Aug 2016 13:03:41 -0400 Subject: mailbox: Add HAS_DMA Kconfig dependency to BCM_PDC_MBOX Add HAS_DMA Kconfig dependency to BCM_PDC_MBOX to avoid link error on some platforms. Reported-by: Fengguang Wu Signed-off-by: Rob Rice Acked-by: Geert Uytterhoeven Signed-off-by: Jassi Brar diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index 97c3729..7817d40 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -127,6 +127,7 @@ config XGENE_SLIMPRO_MBOX config BCM_PDC_MBOX tristate "Broadcom PDC Mailbox" depends on ARM64 || COMPILE_TEST + depends on HAS_DMA default ARCH_BCM_IPROC help Mailbox implementation for the Broadcom PDC ring manager, -- cgit v0.10.2 From 068cf29eca4ef25556496635b978143b170b862c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 4 Aug 2016 08:30:31 +0300 Subject: mailbox: bcm-pdc: potential NULL dereference in pdc_shutdown() We can't pass NULL pointers to pdc_ring_free() so I moved the check for NULL. Signed-off-by: Dan Carpenter Signed-off-by: Jassi Brar diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c index cbe0c1e..c56d4d0 100644 --- a/drivers/mailbox/bcm-pdc-mailbox.c +++ b/drivers/mailbox/bcm-pdc-mailbox.c @@ -1191,10 +1191,11 @@ static void pdc_shutdown(struct mbox_chan *chan) { struct pdc_state *pdcs = chan->con_priv; - if (pdcs) - dev_dbg(&pdcs->pdev->dev, - "Shutdown mailbox channel for PDC %u", pdcs->pdc_idx); + if (!pdcs) + return; + dev_dbg(&pdcs->pdev->dev, + "Shutdown mailbox channel for PDC %u", pdcs->pdc_idx); pdc_ring_free(pdcs); } -- cgit v0.10.2 From a75e4a85f49e7f5d71cf0e425bc009c15ad3b5c4 Mon Sep 17 00:00:00 2001 From: Baoyou Xie Date: Sun, 28 Aug 2016 01:15:24 +0800 Subject: fix:mailbox:bcm-pdc-mailbox:mark symbols static where possible We get 2 warnings when biuld kernel with W=1: drivers/mailbox/bcm-pdc-mailbox.c:472:6: warning: no previous prototype for 'pdc_setup_debugfs' [-Wmissing-prototypes] drivers/mailbox/bcm-pdc-mailbox.c:488:6: warning: no previous prototype for 'pdc_free_debugfs' [-Wmissing-prototypes] In fact, these functions are only used in the file in which they are declared and don't need a declaration, but can be made static. so this patch marks these functions with 'static'. Signed-off-by: Baoyou Xie Acked-by: Arnd Bergmann Signed-off-by: Jassi Brar diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c index c56d4d0..c19dd82 100644 --- a/drivers/mailbox/bcm-pdc-mailbox.c +++ b/drivers/mailbox/bcm-pdc-mailbox.c @@ -469,7 +469,7 @@ static const struct file_operations pdc_debugfs_stats = { * this directory for a SPU. * @pdcs: PDC state structure */ -void pdc_setup_debugfs(struct pdc_state *pdcs) +static void pdc_setup_debugfs(struct pdc_state *pdcs) { char spu_stats_name[16]; @@ -485,7 +485,7 @@ void pdc_setup_debugfs(struct pdc_state *pdcs) &pdc_debugfs_stats); } -void pdc_free_debugfs(void) +static void pdc_free_debugfs(void) { if (debugfs_dir && simple_empty(debugfs_dir)) { debugfs_remove_recursive(debugfs_dir); -- cgit v0.10.2 From f7d3586f2dbe330a84f8d0d02c39ddb3fbde67d3 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Mon, 29 Aug 2016 04:41:50 +0300 Subject: ARM: dts: imx7d-sdb: fix ti,x-plate-ohms property name Fix misspelled "ti,x-plate-ohms" property name of TI TSC2046 touchscreen controller. Fixes: d09e6beafa23 ("ARM: dts: imx7d-sdb: Add support for touchscreen") Signed-off-by: Vladimir Zapolskiy Signed-off-by: Shawn Guo diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts index 95ee268..2f33c46 100644 --- a/arch/arm/boot/dts/imx7d-sdb.dts +++ b/arch/arm/boot/dts/imx7d-sdb.dts @@ -131,7 +131,7 @@ ti,y-min = /bits/ 16 <0>; ti,y-max = /bits/ 16 <0>; ti,pressure-max = /bits/ 16 <0>; - ti,x-plat-ohms = /bits/ 16 <400>; + ti,x-plate-ohms = /bits/ 16 <400>; wakeup-source; }; }; -- cgit v0.10.2 From c6c1f9bc798bee7cfc2e172cd2c9b48187d801a7 Mon Sep 17 00:00:00 2001 From: Liu Ying Date: Mon, 15 Aug 2016 16:41:13 +0800 Subject: drm/imx: Add active plane reconfiguration support We don't support configuring active plane on-the-fly for imx-drm. The relevant CRTC should be disabled before the plane configuration. Of course, the plane itself should be disabled as well. This patch adds active plane reconfiguration support by forcing CRTC mode change and disabling-enabling plane in plane's ->atomic_update callback. Suggested-by: Daniel Vetter Cc: Philipp Zabel Cc: David Airlie Cc: Russell King Cc: Daniel Vetter Cc: Peter Senna Tschudin Signed-off-by: Liu Ying Tested-by: Peter Senna Tschudin Tested-by: Lucas Stach Signed-off-by: Philipp Zabel diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c index 9f7dafc..7bf90e9 100644 --- a/drivers/gpu/drm/imx/imx-drm-core.c +++ b/drivers/gpu/drm/imx/imx-drm-core.c @@ -171,10 +171,34 @@ static void imx_drm_output_poll_changed(struct drm_device *drm) drm_fbdev_cma_hotplug_event(imxdrm->fbhelper); } +static int imx_drm_atomic_check(struct drm_device *dev, + struct drm_atomic_state *state) +{ + int ret; + + ret = drm_atomic_helper_check_modeset(dev, state); + if (ret) + return ret; + + ret = drm_atomic_helper_check_planes(dev, state); + if (ret) + return ret; + + /* + * Check modeset again in case crtc_state->mode_changed is + * updated in plane's ->atomic_check callback. + */ + ret = drm_atomic_helper_check_modeset(dev, state); + if (ret) + return ret; + + return ret; +} + static const struct drm_mode_config_funcs imx_drm_mode_config_funcs = { .fb_create = drm_fb_cma_create, .output_poll_changed = imx_drm_output_poll_changed, - .atomic_check = drm_atomic_helper_check, + .atomic_check = imx_drm_atomic_check, .atomic_commit = drm_atomic_helper_commit, }; diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c index 4ad67d0..29423e75 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -319,13 +319,14 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, return -EINVAL; /* - * since we cannot touch active IDMAC channels, we do not support - * resizing the enabled plane or changing its format + * We support resizing active plane or changing its format by + * forcing CRTC mode change and disabling-enabling plane in plane's + * ->atomic_update callback. */ if (old_fb && (state->src_w != old_state->src_w || state->src_h != old_state->src_h || fb->pixel_format != old_fb->pixel_format)) - return -EINVAL; + crtc_state->mode_changed = true; eba = drm_plane_state_to_eba(state); @@ -336,7 +337,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, return -EINVAL; if (old_fb && fb->pitches[0] != old_fb->pitches[0]) - return -EINVAL; + crtc_state->mode_changed = true; switch (fb->pixel_format) { case DRM_FORMAT_YUV420: @@ -372,7 +373,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, return -EINVAL; if (old_fb && old_fb->pitches[1] != fb->pitches[1]) - return -EINVAL; + crtc_state->mode_changed = true; } return 0; @@ -392,8 +393,14 @@ static void ipu_plane_atomic_update(struct drm_plane *plane, enum ipu_color_space ics; if (old_state->fb) { - ipu_plane_atomic_set_base(ipu_plane, old_state); - return; + struct drm_crtc_state *crtc_state = state->crtc->state; + + if (!crtc_state->mode_changed) { + ipu_plane_atomic_set_base(ipu_plane, old_state); + return; + } + + ipu_disable_plane(plane); } switch (ipu_plane->dp_flow) { -- cgit v0.10.2 From 83d9956b7e6b310c1062df7894257251c625b22e Mon Sep 17 00:00:00 2001 From: Ken Lin Date: Fri, 12 Aug 2016 14:08:47 -0400 Subject: ALSA: usb-audio: Add sample rate inquiry quirk for B850V3 CP2114 Avoid getting sample rate on B850V3 CP2114 as it is unsupported and causes noisy "current rate is different from the runtime rate" messages when playback starts. Signed-off-by: Ken Lin Signed-off-by: Akshay Bhat Cc: Signed-off-by: Takashi Iwai diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 6cf1f35..152292e 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1141,6 +1141,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip) case USB_ID(0x0556, 0x0014): /* Phoenix Audio TMX320VC */ case USB_ID(0x05A3, 0x9420): /* ELP HD USB Camera */ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */ + case USB_ID(0x1901, 0x0191): /* GE B850V3 CP2114 audio interface */ case USB_ID(0x1de7, 0x0013): /* Phoenix Audio MT202exe */ case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */ case USB_ID(0x1de7, 0x0114): /* Phoenix Audio MT202pcs */ -- cgit v0.10.2 From f8e81d7e496ea89f377c6935b92022032bed62e5 Mon Sep 17 00:00:00 2001 From: Gregor Boirie Date: Wed, 24 Aug 2016 15:28:27 +0200 Subject: tools:iio:iio_generic_buffer: fix trigger-less mode Passing the trigger-less mode option on the command line causes iio_generic_buffer to fail searching for an IIO trigger. Fix this by skipping trigger initialization if trigger-less mode is requested. Technically it actually fixes: 7c7e9dad70 where the bug was introduced but as the window to the patch below that changes the context was very small let's mark it with that. Signed-off-by: Gregor Boirie Fixes: deb4d1fdcb5af ("iio: generic_buffer: Fix --trigger-num option") Signed-off-by: Jonathan Cameron diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c index ae68bf0..f39c0e9 100644 --- a/tools/iio/iio_generic_buffer.c +++ b/tools/iio/iio_generic_buffer.c @@ -456,7 +456,7 @@ int main(int argc, char **argv) if (notrigger) { printf("trigger-less mode selected\n"); - } if (trig_num >= 0) { + } else if (trig_num >= 0) { char *trig_dev_name; ret = asprintf(&trig_dev_name, "%strigger%d", iio_dir, trig_num); if (ret < 0) { -- cgit v0.10.2 From 3dc147359e3dcdf0648f1e2c11f62cfae3160df0 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 29 Aug 2016 15:12:54 -0400 Subject: pNFS/flexfiles: Fix an Oopsable condition when connection to the DS fails If the attempt to connect to a DS fails inside ff_layout_pg_init_read or ff_layout_pg_init_write, then we currently end up clearing the layout segment carried by the struct nfs_pageio_descriptor, causing an Oops when we later call into ff_layout_read_pagelist/ff_layout_write_pagelist. The fix is to ensure we return the layout and then retry. Fixes: 446ca2195303 ("pNFS/flexfiles: When initing reads or writes, we...") Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Trond Myklebust diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index ee1c94c..51b5136 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -806,11 +806,14 @@ ff_layout_choose_best_ds_for_read(struct pnfs_layout_segment *lseg, { struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); struct nfs4_pnfs_ds *ds; + bool fail_return = false; int idx; /* mirrors are sorted by efficiency */ for (idx = start_idx; idx < fls->mirror_array_cnt; idx++) { - ds = nfs4_ff_layout_prepare_ds(lseg, idx, false); + if (idx+1 == fls->mirror_array_cnt) + fail_return = true; + ds = nfs4_ff_layout_prepare_ds(lseg, idx, fail_return); if (ds) { *best_idx = idx; return ds; @@ -859,6 +862,7 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs4_pnfs_ds *ds; int ds_idx; +retry: /* Use full layout for now */ if (!pgio->pg_lseg) ff_layout_pg_get_read(pgio, req, false); @@ -871,10 +875,13 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio, ds = ff_layout_choose_best_ds_for_read(pgio->pg_lseg, 0, &ds_idx); if (!ds) { - if (ff_layout_no_fallback_to_mds(pgio->pg_lseg)) - goto out_pnfs; - else + if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) goto out_mds; + pnfs_put_lseg(pgio->pg_lseg); + pgio->pg_lseg = NULL; + /* Sleep for 1 second before retrying */ + ssleep(1); + goto retry; } mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx); @@ -890,12 +897,6 @@ out_mds: pnfs_put_lseg(pgio->pg_lseg); pgio->pg_lseg = NULL; nfs_pageio_reset_read_mds(pgio); - return; - -out_pnfs: - pnfs_set_lo_fail(pgio->pg_lseg); - pnfs_put_lseg(pgio->pg_lseg); - pgio->pg_lseg = NULL; } static void @@ -909,6 +910,7 @@ ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio, int i; int status; +retry: if (!pgio->pg_lseg) { pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, req->wb_context, @@ -940,10 +942,13 @@ ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio, for (i = 0; i < pgio->pg_mirror_count; i++) { ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, i, true); if (!ds) { - if (ff_layout_no_fallback_to_mds(pgio->pg_lseg)) - goto out_pnfs; - else + if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) goto out_mds; + pnfs_put_lseg(pgio->pg_lseg); + pgio->pg_lseg = NULL; + /* Sleep for 1 second before retrying */ + ssleep(1); + goto retry; } pgm = &pgio->pg_mirrors[i]; mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); @@ -956,12 +961,6 @@ out_mds: pnfs_put_lseg(pgio->pg_lseg); pgio->pg_lseg = NULL; nfs_pageio_reset_write_mds(pgio); - return; - -out_pnfs: - pnfs_set_lo_fail(pgio->pg_lseg); - pnfs_put_lseg(pgio->pg_lseg); - pgio->pg_lseg = NULL; } static unsigned int diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c index 970efba..f7a3f6b 100644 --- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -379,7 +379,7 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx, devid = &mirror->mirror_ds->id_node; if (ff_layout_test_devid_unavailable(devid)) - goto out; + goto out_fail; ds = mirror->mirror_ds->ds; /* matching smp_wmb() in _nfs4_pnfs_v3/4_ds_connect */ @@ -405,15 +405,16 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx, mirror->mirror_ds->ds_versions[0].rsize = max_payload; if (mirror->mirror_ds->ds_versions[0].wsize > max_payload) mirror->mirror_ds->ds_versions[0].wsize = max_payload; - } else { - ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), - mirror, lseg->pls_range.offset, - lseg->pls_range.length, NFS4ERR_NXIO, - OP_ILLEGAL, GFP_NOIO); - if (fail_return || !ff_layout_has_available_ds(lseg)) - pnfs_error_mark_layout_for_return(ino, lseg); - ds = NULL; + goto out; } + ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), + mirror, lseg->pls_range.offset, + lseg->pls_range.length, NFS4ERR_NXIO, + OP_ILLEGAL, GFP_NOIO); +out_fail: + if (fail_return || !ff_layout_has_available_ds(lseg)) + pnfs_error_mark_layout_for_return(ino, lseg); + ds = NULL; out: return ds; } -- cgit v0.10.2 From 360647959323ec066cc55d82133df73e30530824 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Mon, 11 Jul 2016 09:25:45 +0300 Subject: iwlwifi: mvm: consider P2p device type for firmware dump triggers When the user really wanted a dump on P2P Client, he coudln't get it because we checked vif->type but didn't take vif->p2p into account. Fix that. Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.h index f7dff76..e9f1be9 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.h @@ -105,7 +105,8 @@ iwl_fw_dbg_trigger_vif_match(struct iwl_fw_dbg_trigger_tlv *trig, { u32 trig_vif = le32_to_cpu(trig->vif_type); - return trig_vif == IWL_FW_DBG_CONF_VIF_ANY || vif->type == trig_vif; + return trig_vif == IWL_FW_DBG_CONF_VIF_ANY || + ieee80211_vif_type_p2p(vif) == trig_vif; } static inline bool -- cgit v0.10.2 From bdc98b13716eafc454457e068d6c8aaffaaa71e4 Mon Sep 17 00:00:00 2001 From: Sharon Dvir Date: Mon, 25 Jul 2016 16:11:05 +0300 Subject: iwlwifi: mvm: check if vif is NULL before using it wdev_to_ieee80211_vif() might return NULL. Check that vif != NULL before dereferencing it. Signed-off-by: Sharon Dvir Signed-off-by: Luca Coelho diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index b4fc86d..6a615bb 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -467,6 +467,8 @@ struct iwl_mvm_vif { static inline struct iwl_mvm_vif * iwl_mvm_vif_from_mac80211(struct ieee80211_vif *vif) { + if (!vif) + return NULL; return (void *)vif->drv_priv; } -- cgit v0.10.2 From ff6e58e648ed5f3cc43891767811d5c3c88bbd41 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Wed, 3 Aug 2016 22:06:43 +0300 Subject: iwlwifi: mvm: don't use ret when not initialised fw-dbg code return ret but that variable was either 0 or not initialised. Return 0 always. Signed-off-by: Emmanuel Grumbach Fixes: 6a95126763fb ("iwlwifi: mvm: send dbg config hcmds to fw if set in tlv") Signed-off-by: Luca Coelho diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c index 1abcabb..46b52bf 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c @@ -960,5 +960,6 @@ int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 conf_id) } mvm->fw_dbg_conf = conf_id; - return ret; + + return 0; } -- cgit v0.10.2 From a904a08b5fee5317ff0f7b8212aa5d0776795a52 Mon Sep 17 00:00:00 2001 From: "Peer, Ilan" Date: Wed, 10 Aug 2016 13:48:35 +0300 Subject: iwlwifi: mvm: Advertise support for AP channel width change The iwlmvm driver supports channel width change in AP mode. Add the proper flag. Signed-off-by: Ilan Peer Signed-off-by: Luca Coelho diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 6d60645..5dd77e3 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -624,6 +624,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | NL80211_FEATURE_LOW_PRIORITY_SCAN | NL80211_FEATURE_P2P_GO_OPPPS | + NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | NL80211_FEATURE_DYNAMIC_SMPS | NL80211_FEATURE_STATIC_SMPS | NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; -- cgit v0.10.2 From ea78d80866ce375defb2fdd1c8a3aafec95e0f85 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Tue, 30 Aug 2016 13:51:39 +1000 Subject: xfs: track log done items directly in the deferred pending work item Christoph reports slab corruption when a deferred refcount update aborts during _defer_finish(). The cause of this was broken log item state tracking in xfs_defer_pending -- upon an abort, _defer_trans_abort() will call abort_intent on all intent items, including the ones that have already had a done item attached. This is incorrect because each intent item has 2 refcount: the first is released when the intent item is committed to the log; and the second is released when the _done_ item is committed to the log, or by the intent creator if there is no done item. In other words, once we log the done item, responsibility for releasing the intent item's second refcount is transferred to the done item and /must not/ be performed by anything else. The dfp_committed flag should have been tracking whether or not we had a done item so that _defer_trans_abort could decide if it needs to abort the intent item, but due to a thinko this was not the case. Rip it out and track the done item directly so that we do the right thing w.r.t. intent item freeing. Signed-off-by: Darrick J. Wong Reported-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c index 054a203..c221d0e 100644 --- a/fs/xfs/libxfs/xfs_defer.c +++ b/fs/xfs/libxfs/xfs_defer.c @@ -194,7 +194,7 @@ xfs_defer_trans_abort( /* Abort intent items. */ list_for_each_entry(dfp, &dop->dop_pending, dfp_list) { trace_xfs_defer_pending_abort(tp->t_mountp, dfp); - if (dfp->dfp_committed) + if (!dfp->dfp_done) dfp->dfp_type->abort_intent(dfp->dfp_intent); } @@ -290,7 +290,6 @@ xfs_defer_finish( struct xfs_defer_pending *dfp; struct list_head *li; struct list_head *n; - void *done_item = NULL; void *state; int error = 0; void (*cleanup_fn)(struct xfs_trans *, void *, int); @@ -309,19 +308,11 @@ xfs_defer_finish( if (error) goto out; - /* Mark all pending intents as committed. */ - list_for_each_entry_reverse(dfp, &dop->dop_pending, dfp_list) { - if (dfp->dfp_committed) - break; - trace_xfs_defer_pending_commit((*tp)->t_mountp, dfp); - dfp->dfp_committed = true; - } - /* Log an intent-done item for the first pending item. */ dfp = list_first_entry(&dop->dop_pending, struct xfs_defer_pending, dfp_list); trace_xfs_defer_pending_finish((*tp)->t_mountp, dfp); - done_item = dfp->dfp_type->create_done(*tp, dfp->dfp_intent, + dfp->dfp_done = dfp->dfp_type->create_done(*tp, dfp->dfp_intent, dfp->dfp_count); cleanup_fn = dfp->dfp_type->finish_cleanup; @@ -331,7 +322,7 @@ xfs_defer_finish( list_del(li); dfp->dfp_count--; error = dfp->dfp_type->finish_item(*tp, dop, li, - done_item, &state); + dfp->dfp_done, &state); if (error) { /* * Clean up after ourselves and jump out. @@ -428,8 +419,8 @@ xfs_defer_add( dfp = kmem_alloc(sizeof(struct xfs_defer_pending), KM_SLEEP | KM_NOFS); dfp->dfp_type = defer_op_types[type]; - dfp->dfp_committed = false; dfp->dfp_intent = NULL; + dfp->dfp_done = NULL; dfp->dfp_count = 0; INIT_LIST_HEAD(&dfp->dfp_work); list_add_tail(&dfp->dfp_list, &dop->dop_intake); diff --git a/fs/xfs/libxfs/xfs_defer.h b/fs/xfs/libxfs/xfs_defer.h index cc3981c..e96533d 100644 --- a/fs/xfs/libxfs/xfs_defer.h +++ b/fs/xfs/libxfs/xfs_defer.h @@ -30,8 +30,8 @@ struct xfs_defer_op_type; struct xfs_defer_pending { const struct xfs_defer_op_type *dfp_type; /* function pointers */ struct list_head dfp_list; /* pending items */ - bool dfp_committed; /* committed trans? */ void *dfp_intent; /* log intent item */ + void *dfp_done; /* log done item */ struct list_head dfp_work; /* work items */ unsigned int dfp_count; /* # extent items */ }; diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 7e88bec..d303a66 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -2295,7 +2295,7 @@ DECLARE_EVENT_CLASS(xfs_defer_pending_class, __entry->dev = mp ? mp->m_super->s_dev : 0; __entry->type = dfp->dfp_type->type; __entry->intent = dfp->dfp_intent; - __entry->committed = dfp->dfp_committed; + __entry->committed = dfp->dfp_done != NULL; __entry->nr = dfp->dfp_count; ), TP_printk("dev %d:%d optype %d intent %p committed %d nr %d\n", -- cgit v0.10.2 From 311042d1b67d9a1856a8e1294e7729fb86f64014 Mon Sep 17 00:00:00 2001 From: Shrirang Bagul Date: Mon, 29 Aug 2016 15:19:27 +0800 Subject: ALSA: hda - Add headset mic quirk for Dell Inspiron 5468 This patch enables headset microphone on some variants of Dell Inspiron 5468. (Dell SSID 0x07ad) BugLink: https://bugs.launchpad.net/bugs/1617900 Signed-off-by: Shrirang Bagul Cc: Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 7100f05..02fd252 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5895,6 +5895,10 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = { {0x12, 0x90a60170}, {0x14, 0x90170120}, {0x21, 0x02211030}), + SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell Inspiron 5468", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, + {0x12, 0x90a60180}, + {0x14, 0x90170120}, + {0x21, 0x02211030}), SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, ALC256_STANDARD_PINS), SND_HDA_PIN_QUIRK(0x10ec0280, 0x103c, "HP", ALC280_FIXUP_HP_GPIO4, -- cgit v0.10.2 From 554d072e7bc3e56de5893c8181110a547b2062c9 Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Mon, 29 Aug 2016 12:37:35 +0300 Subject: mac80211: TDLS: don't require beaconing for AP BW Stop downgrading TDLS chandef when reaching the AP BW. The AP provides the necessary regulatory protection in this case. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=153961, which reported an infinite loop here. Reported-by: Kamil Toman Signed-off-by: Arik Nemtsov Signed-off-by: Johannes Berg diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c index b5d28f1..afca7d1 100644 --- a/net/mac80211/tdls.c +++ b/net/mac80211/tdls.c @@ -333,10 +333,11 @@ ieee80211_tdls_chandef_vht_upgrade(struct ieee80211_sub_if_data *sdata, if (!uc.center_freq1) return; - /* proceed to downgrade the chandef until usable or the same */ + /* proceed to downgrade the chandef until usable or the same as AP BW */ while (uc.width > max_width || - !cfg80211_reg_can_beacon_relax(sdata->local->hw.wiphy, &uc, - sdata->wdev.iftype)) + (uc.width > sta->tdls_chandef.width && + !cfg80211_reg_can_beacon_relax(sdata->local->hw.wiphy, &uc, + sdata->wdev.iftype))) ieee80211_chandef_downgrade(&uc); if (!cfg80211_chandef_identical(&uc, &sta->tdls_chandef)) { -- cgit v0.10.2 From 61aaa0e8c1c15d9e045f0577f046be50f2f571ab Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Linus=20L=C3=BCssing?= Date: Fri, 19 Aug 2016 22:02:48 +0200 Subject: cfg80211: Add stub for cfg80211_get_station() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows modules using this function (currently: batman-adv) to compile even if cfg80211 is not built at all, thus relaxing dependencies. Signed-off-by: Linus Lüssing Signed-off-by: Johannes Berg diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 9c23f4d3..beb7610 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1102,6 +1102,7 @@ struct station_info { struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1]; }; +#if IS_ENABLED(CONFIG_CFG80211) /** * cfg80211_get_station - retrieve information about a given station * @dev: the device where the station is supposed to be connected to @@ -1114,6 +1115,14 @@ struct station_info { */ int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr, struct station_info *sinfo); +#else +static inline int cfg80211_get_station(struct net_device *dev, + const u8 *mac_addr, + struct station_info *sinfo) +{ + return -ENOENT; +} +#endif /** * enum monitor_flags - monitor flags -- cgit v0.10.2 From a474478642d57641ea06645104a15acc0420f01a Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 29 Aug 2016 17:51:24 +0200 Subject: drm/imx: fix crtc vblank state regression The atomic conversion lost the notification to let the DRM core know about the current state of the CRTC vblank interrupts. This regressed the ability of the core to reject page flip attempts on currently disabled CRTCs. Add back the notifications. Signed-off-by: Lucas Stach Signed-off-by: Philipp Zabel diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c index 08e188b..462056e 100644 --- a/drivers/gpu/drm/imx/ipuv3-crtc.c +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c @@ -76,6 +76,8 @@ static void ipu_crtc_disable(struct drm_crtc *crtc) crtc->state->event = NULL; } spin_unlock_irq(&crtc->dev->event_lock); + + drm_crtc_vblank_off(crtc); } static void imx_drm_crtc_reset(struct drm_crtc *crtc) @@ -175,6 +177,8 @@ static int ipu_crtc_atomic_check(struct drm_crtc *crtc, static void ipu_crtc_atomic_begin(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { + drm_crtc_vblank_on(crtc); + spin_lock_irq(&crtc->dev->event_lock); if (crtc->state->event) { WARN_ON(drm_crtc_vblank_get(crtc)); -- cgit v0.10.2 From fd06c77eb9200b53d421da5fffe0dcd894b5d72a Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Tue, 30 Aug 2016 15:36:34 +0800 Subject: ALSA: hda - Enable subwoofer on Dell Inspiron 7559 The subwoofer on Inspiron 7559 was disabled originally. Applying a pin fixup to node 0x1b can enable it and make it work. Old pin: 0x411111f0 New pin: 0x90170151 Signed-off-by: Kai-Heng Feng Cc: Signed-off-by: Takashi Iwai diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 02fd252..575cefd 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4855,6 +4855,7 @@ enum { ALC221_FIXUP_HP_FRONT_MIC, ALC292_FIXUP_TPT460, ALC298_FIXUP_SPK_VOLUME, + ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER, }; static const struct hda_fixup alc269_fixups[] = { @@ -5516,6 +5517,15 @@ static const struct hda_fixup alc269_fixups[] = { .chained = true, .chain_id = ALC298_FIXUP_DELL1_MIC_NO_PRESENCE, }, + [ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER] = { + .type = HDA_FIXUP_PINS, + .v.pins = (const struct hda_pintbl[]) { + { 0x1b, 0x90170151 }, + { } + }, + .chained = true, + .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE + }, }; static const struct snd_pci_quirk alc269_fixup_tbl[] = { @@ -5560,6 +5570,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK), SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC293_FIXUP_DISABLE_AAMIX_MULTIJACK), SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13 9350", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE), + SND_PCI_QUIRK(0x1028, 0x0706, "Dell Inspiron 7559", ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER), SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE), SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE), SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME), -- cgit v0.10.2 From c73c2484901139c28383b58eabcbf4d613e91518 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sun, 28 Aug 2016 16:59:52 +0800 Subject: netfilter: nf_tables_netdev: remove redundant ip_hdr assignment We have already use skb_header_pointer to get the ip header pointer, so there's no need to use ip_hdr again. Moreover, in NETDEV INGRESS hook, ip header maybe not linear, so use ip_hdr is not appropriate, remove it. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso diff --git a/net/netfilter/nf_tables_netdev.c b/net/netfilter/nf_tables_netdev.c index 5eefe4a..75d696f 100644 --- a/net/netfilter/nf_tables_netdev.c +++ b/net/netfilter/nf_tables_netdev.c @@ -30,7 +30,6 @@ nft_netdev_set_pktinfo_ipv4(struct nft_pktinfo *pkt, if (!iph) return; - iph = ip_hdr(skb); if (iph->ihl < 5 || iph->version != 4) return; -- cgit v0.10.2 From 8aade778f787305fdbfd3c1d54e6b583601b5902 Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Mon, 22 Aug 2016 23:53:25 +0800 Subject: ARM: imx6: add missing BM_CLPCR_BYPASS_PMIC_READY setting for imx6sx i.MX6SX has bypass PMIC ready function, as this function is normally NOT enabled on the board design, so we need to bypass the PMIC ready pin check during DSM mode resume flow, otherwise, the internal DSM resume logic will be waiting for this signal to be ready forever and cause resume fail. Signed-off-by: Anson Huang Fixes: ff843d621bfc ("ARM: imx: add suspend support for i.mx6sx") Cc: Tested-by: Peter Chen Signed-off-by: Shawn Guo diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index 67bab74..fe708e2 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -310,7 +310,7 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode) val |= 0x3 << BP_CLPCR_STBY_COUNT; val |= BM_CLPCR_VSTBY; val |= BM_CLPCR_SBYOS; - if (cpu_is_imx6sl()) + if (cpu_is_imx6sl() || cpu_is_imx6sx()) val |= BM_CLPCR_BYPASS_PMIC_READY; if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6ul()) val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS; -- cgit v0.10.2 From 2c5575401e34de3d2fc90af1c95bc73435784093 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 26 Aug 2016 16:28:39 -0500 Subject: usb: musb: Fix locking errors for host only mode If we have USB gadgets disabled and USB_MUSB_HOST set, we get errors "possible irq lock inverssion dependency detected" errors during boot. Let's fix the issue by adding start_musb flag and start the controller after we're out of the spinlock protected section. Reported-by: Ladislav Michl Tested-by: Ladislav Michl Signed-off-by: Tony Lindgren Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 192248f..fe08e77 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -290,6 +290,7 @@ int musb_hub_control( u32 temp; int retval = 0; unsigned long flags; + bool start_musb = false; spin_lock_irqsave(&musb->lock, flags); @@ -390,7 +391,7 @@ int musb_hub_control( * logic relating to VBUS power-up. */ if (!hcd->self.is_b_host && musb_has_gadget(musb)) - musb_start(musb); + start_musb = true; break; case USB_PORT_FEAT_RESET: musb_port_reset(musb, true); @@ -451,5 +452,9 @@ error: retval = -EPIPE; } spin_unlock_irqrestore(&musb->lock, flags); + + if (start_musb) + musb_start(musb); + return retval; } -- cgit v0.10.2 From 8c57cac1457f3125a5d13dc03635c0708c61bff0 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Wed, 20 Jul 2016 10:24:02 +0300 Subject: mei: me: disable driver on SPT SPS firmware Sunrise Point PCH with SPS Firmware doesn't expose working MEI interface, we need to quirk it out. The SPS Firmware is identifiable only on the first PCI function of the device. Cc: #4.6+ Tested-by: Sujith Pandel Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index e2fb44c..dc3a854 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -1263,8 +1263,14 @@ static bool mei_me_fw_type_nm(struct pci_dev *pdev) static bool mei_me_fw_type_sps(struct pci_dev *pdev) { u32 reg; - /* Read ME FW Status check for SPS Firmware */ - pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); + unsigned int devfn; + + /* + * Read ME FW Status register to check for SPS Firmware + * The SPS FW is only signaled in pci function 0 + */ + devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0); + pci_bus_read_config_dword(pdev->bus, devfn, PCI_CFG_HFS_1, ®); trace_mei_pci_cfg_read(&pdev->dev, "PCI_CFG_HFS_1", PCI_CFG_HFS_1, reg); /* if bits [19:16] = 15, running SPS Firmware */ return (reg & 0xf0000) == 0xf0000; diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 64e64da..71cea9b 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -85,8 +85,8 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, mei_me_pch8_cfg)}, {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, mei_me_pch8_cfg)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, mei_me_pch8_cfg)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, mei_me_pch8_cfg)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, mei_me_pch8_sps_cfg)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, mei_me_pch8_sps_cfg)}, {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, mei_me_pch8_cfg)}, {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, mei_me_pch8_cfg)}, -- cgit v0.10.2 From 52442f9b11b7e5d4a38d99143011831fd171f8d9 Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Tue, 30 Aug 2016 09:20:32 -0400 Subject: NFS4: Avoid migration loops If a server returns itself as a location while migrating, the client may end up getting stuck attempting to migrate twice to the same server. Catch this by checking if the nfs_client found is the same as the existing client. For the other two callers to nfs4_set_client, the nfs_client will always be ERR_PTR(-EINVAL). Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 8d7d08d..cd3b7cf 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -817,6 +817,11 @@ static int nfs4_set_client(struct nfs_server *server, goto error; } + if (server->nfs_client == clp) { + error = -ELOOP; + goto error; + } + /* * Query for the lease time on clientid setup or renewal * -- cgit v0.10.2 From 98b0f80c2396224bbbed81792b526e6c72ba9efa Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 29 Aug 2016 11:15:36 -0400 Subject: NFSv4.x: Fix a refcount leak in nfs_callback_up_net On error, the callers expect us to return without bumping nn->cb_users[]. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # v3.7+ diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index a7f2e6e..52a2831 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -275,6 +275,7 @@ static int nfs_callback_up_net(int minorversion, struct svc_serv *serv, err_socks: svc_rpcb_cleanup(serv, net); err_bind: + nn->cb_users[minorversion]--; dprintk("NFS: Couldn't create callback socket: err = %d; " "net = %p\n", ret, net); return ret; -- cgit v0.10.2 From 9ebae9e4bcd7dff22536af8a969d8f66e6f23900 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 30 Aug 2016 16:47:02 +0100 Subject: pata_ninja32: Avoid corrupting status flags Ninja32 needs to set some flags to indicate it does 32bit IO. However it currently assigns this which loses the initializing flag and causes a warning spew. Fix it to use a logical or as is intended. Signed-off-by: Alan Cox Tested-by: Ellmar Stelnberger Signed-off-by: Tejun Heo diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c index 633aa29..44f97ad 100644 --- a/drivers/ata/pata_ninja32.c +++ b/drivers/ata/pata_ninja32.c @@ -144,7 +144,7 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id) ap->ioaddr.altstatus_addr = base + 0x1E; ap->ioaddr.bmdma_addr = base; ata_sff_std_ports(&ap->ioaddr); - ap->pflags = ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE; + ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE; ninja32_program(base); /* FIXME: Should we disable them at remove ? */ -- cgit v0.10.2 From 0d025d271e55f3de21f0aaaf54b42d20404d2b23 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Tue, 30 Aug 2016 08:04:16 -0500 Subject: mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS There are three usercopy warnings which are currently being silenced for gcc 4.6 and newer: 1) "copy_from_user() buffer size is too small" compile warning/error This is a static warning which happens when object size and copy size are both const, and copy size > object size. I didn't see any false positives for this one. So the function warning attribute seems to be working fine here. Note this scenario is always a bug and so I think it should be changed to *always* be an error, regardless of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS. 2) "copy_from_user() buffer size is not provably correct" compile warning This is another static warning which happens when I enable __compiletime_object_size() for new compilers (and CONFIG_DEBUG_STRICT_USER_COPY_CHECKS). It happens when object size is const, but copy size is *not*. In this case there's no way to compare the two at build time, so it gives the warning. (Note the warning is a byproduct of the fact that gcc has no way of knowing whether the overflow function will be called, so the call isn't dead code and the warning attribute is activated.) So this warning seems to only indicate "this is an unusual pattern, maybe you should check it out" rather than "this is a bug". I get 102(!) of these warnings with allyesconfig and the __compiletime_object_size() gcc check removed. I don't know if there are any real bugs hiding in there, but from looking at a small sample, I didn't see any. According to Kees, it does sometimes find real bugs. But the false positive rate seems high. 3) "Buffer overflow detected" runtime warning This is a runtime warning where object size is const, and copy size > object size. All three warnings (both static and runtime) were completely disabled for gcc 4.6 with the following commit: 2fb0815c9ee6 ("gcc4: disable __compiletime_object_size for GCC 4.6+") That commit mistakenly assumed that the false positives were caused by a gcc bug in __compiletime_object_size(). But in fact, __compiletime_object_size() seems to be working fine. The false positives were instead triggered by #2 above. (Though I don't have an explanation for why the warnings supposedly only started showing up in gcc 4.6.) So remove warning #2 to get rid of all the false positives, and re-enable warnings #1 and #3 by reverting the above commit. Furthermore, since #1 is a real bug which is detected at compile time, upgrade it to always be an error. Having done all that, CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is no longer needed. Signed-off-by: Josh Poimboeuf Cc: Kees Cook Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H . Peter Anvin" Cc: Andy Lutomirski Cc: Steven Rostedt Cc: Brian Gerst Cc: Peter Zijlstra Cc: Frederic Weisbecker Cc: Byungchul Park Cc: Nilay Vaish Signed-off-by: Linus Torvalds diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index cd87781..af12c2d 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -1,6 +1,5 @@ config PARISC def_bool y - select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_MIGHT_HAVE_PC_PARPORT select HAVE_IDE select HAVE_OPROFILE diff --git a/arch/parisc/configs/c8000_defconfig b/arch/parisc/configs/c8000_defconfig index 1a8f6f95..f6a4c01 100644 --- a/arch/parisc/configs/c8000_defconfig +++ b/arch/parisc/configs/c8000_defconfig @@ -245,7 +245,6 @@ CONFIG_DEBUG_RT_MUTEXES=y CONFIG_PROVE_RCU_DELAY=y CONFIG_DEBUG_BLOCK_EXT_DEVT=y CONFIG_LATENCYTOP=y -CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y CONFIG_KEYS=y # CONFIG_CRYPTO_HW is not set CONFIG_FONTS=y diff --git a/arch/parisc/configs/generic-64bit_defconfig b/arch/parisc/configs/generic-64bit_defconfig index 7e07926..c564e6e 100644 --- a/arch/parisc/configs/generic-64bit_defconfig +++ b/arch/parisc/configs/generic-64bit_defconfig @@ -291,7 +291,6 @@ CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y # CONFIG_SCHED_DEBUG is not set CONFIG_TIMER_STATS=y -CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_ECB=m CONFIG_CRYPTO_PCBC=m diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 0f59fd9..e915048 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -208,13 +208,13 @@ unsigned long copy_in_user(void __user *dst, const void __user *src, unsigned lo #define __copy_to_user_inatomic __copy_to_user #define __copy_from_user_inatomic __copy_from_user -extern void copy_from_user_overflow(void) -#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS - __compiletime_error("copy_from_user() buffer size is not provably correct") -#else - __compiletime_warning("copy_from_user() buffer size is not provably correct") -#endif -; +extern void __compiletime_error("usercopy buffer size is too small") +__bad_copy_user(void); + +static inline void copy_user_overflow(int size, unsigned long count) +{ + WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count); +} static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, @@ -223,10 +223,12 @@ static inline unsigned long __must_check copy_from_user(void *to, int sz = __compiletime_object_size(to); int ret = -EFAULT; - if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n)) + if (likely(sz == -1 || sz >= n)) ret = __copy_from_user(to, from, n); - else - copy_from_user_overflow(); + else if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); + else + __bad_copy_user(); return ret; } diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index e751fe2..c109f07 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -68,7 +68,6 @@ config DEBUG_RODATA config S390 def_bool y select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE - select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/s390/configs/default_defconfig b/arch/s390/configs/default_defconfig index 26e0c7f..412b1bd 100644 --- a/arch/s390/configs/default_defconfig +++ b/arch/s390/configs/default_defconfig @@ -602,7 +602,6 @@ CONFIG_FAIL_FUTEX=y CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y CONFIG_LATENCYTOP=y -CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y CONFIG_IRQSOFF_TRACER=y CONFIG_PREEMPT_TRACER=y CONFIG_SCHED_TRACER=y diff --git a/arch/s390/configs/gcov_defconfig b/arch/s390/configs/gcov_defconfig index 24879da..bec279e 100644 --- a/arch/s390/configs/gcov_defconfig +++ b/arch/s390/configs/gcov_defconfig @@ -552,7 +552,6 @@ CONFIG_NOTIFIER_ERROR_INJECTION=m CONFIG_CPU_NOTIFIER_ERROR_INJECT=m CONFIG_PM_NOTIFIER_ERROR_INJECT=m CONFIG_LATENCYTOP=y -CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y CONFIG_BLK_DEV_IO_TRACE=y # CONFIG_KPROBE_EVENT is not set CONFIG_TRACE_ENUM_MAP_FILE=y diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig index a5c1e5f..1751446 100644 --- a/arch/s390/configs/performance_defconfig +++ b/arch/s390/configs/performance_defconfig @@ -549,7 +549,6 @@ CONFIG_TIMER_STATS=y CONFIG_RCU_TORTURE_TEST=m CONFIG_RCU_CPU_STALL_TIMEOUT=60 CONFIG_LATENCYTOP=y -CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y CONFIG_SCHED_TRACER=y CONFIG_FTRACE_SYSCALLS=y CONFIG_STACK_TRACER=y diff --git a/arch/s390/defconfig b/arch/s390/defconfig index 73610f2..2d40ef0 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -172,7 +172,6 @@ CONFIG_DEBUG_NOTIFIERS=y CONFIG_RCU_CPU_STALL_TIMEOUT=60 CONFIG_RCU_TRACE=y CONFIG_LATENCYTOP=y -CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y CONFIG_SCHED_TRACER=y CONFIG_FTRACE_SYSCALLS=y CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index 9b49cf1..95aefdb 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -311,6 +311,14 @@ int __get_user_bad(void) __attribute__((noreturn)); #define __put_user_unaligned __put_user #define __get_user_unaligned __get_user +extern void __compiletime_error("usercopy buffer size is too small") +__bad_copy_user(void); + +static inline void copy_user_overflow(int size, unsigned long count) +{ + WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count); +} + /** * copy_to_user: - Copy a block of data into user space. * @to: Destination address, in user space. @@ -332,12 +340,6 @@ copy_to_user(void __user *to, const void *from, unsigned long n) return __copy_to_user(to, from, n); } -void copy_from_user_overflow(void) -#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -__compiletime_warning("copy_from_user() buffer size is not provably correct") -#endif -; - /** * copy_from_user: - Copy a block of data from user space. * @to: Destination address, in kernel space. @@ -362,7 +364,10 @@ copy_from_user(void *to, const void __user *from, unsigned long n) might_fault(); if (unlikely(sz != -1 && sz < n)) { - copy_from_user_overflow(); + if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); + else + __bad_copy_user(); return n; } return __copy_from_user(to, from, n); diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 4820a02..78da75b 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -4,7 +4,6 @@ config TILE def_bool y select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE - select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_WANT_FRAME_POINTERS diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h index 0a9c4265..a77369e 100644 --- a/arch/tile/include/asm/uaccess.h +++ b/arch/tile/include/asm/uaccess.h @@ -416,14 +416,13 @@ _copy_from_user(void *to, const void __user *from, unsigned long n) return n; } -#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -/* - * There are still unprovable places in the generic code as of 2.6.34, so this - * option is not really compatible with -Werror, which is more useful in - * general. - */ -extern void copy_from_user_overflow(void) - __compiletime_warning("copy_from_user() size is not provably correct"); +extern void __compiletime_error("usercopy buffer size is too small") +__bad_copy_user(void); + +static inline void copy_user_overflow(int size, unsigned long count) +{ + WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count); +} static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, @@ -433,14 +432,13 @@ static inline unsigned long __must_check copy_from_user(void *to, if (likely(sz == -1 || sz >= n)) n = _copy_from_user(to, from, n); + else if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); else - copy_from_user_overflow(); + __bad_copy_user(); return n; } -#else -#define copy_from_user _copy_from_user -#endif #ifdef __tilegx__ /** diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c580d8c..2a1f0ce 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -24,7 +24,6 @@ config X86 select ARCH_DISCARD_MEMBLOCK select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE - select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FAST_MULTIPLIER diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index a0ae610..c3f2911 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -697,43 +697,14 @@ unsigned long __must_check _copy_from_user(void *to, const void __user *from, unsigned long __must_check _copy_to_user(void __user *to, const void *from, unsigned n); -#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -# define copy_user_diag __compiletime_error -#else -# define copy_user_diag __compiletime_warning -#endif - -extern void copy_user_diag("copy_from_user() buffer size is too small") -copy_from_user_overflow(void); -extern void copy_user_diag("copy_to_user() buffer size is too small") -copy_to_user_overflow(void) __asm__("copy_from_user_overflow"); - -#undef copy_user_diag - -#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS - -extern void -__compiletime_warning("copy_from_user() buffer size is not provably correct") -__copy_from_user_overflow(void) __asm__("copy_from_user_overflow"); -#define __copy_from_user_overflow(size, count) __copy_from_user_overflow() - -extern void -__compiletime_warning("copy_to_user() buffer size is not provably correct") -__copy_to_user_overflow(void) __asm__("copy_from_user_overflow"); -#define __copy_to_user_overflow(size, count) __copy_to_user_overflow() - -#else +extern void __compiletime_error("usercopy buffer size is too small") +__bad_copy_user(void); -static inline void -__copy_from_user_overflow(int size, unsigned long count) +static inline void copy_user_overflow(int size, unsigned long count) { WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count); } -#define __copy_to_user_overflow __copy_from_user_overflow - -#endif - static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { @@ -743,31 +714,13 @@ copy_from_user(void *to, const void __user *from, unsigned long n) kasan_check_write(to, n); - /* - * While we would like to have the compiler do the checking for us - * even in the non-constant size case, any false positives there are - * a problem (especially when DEBUG_STRICT_USER_COPY_CHECKS, but even - * without - the [hopefully] dangerous looking nature of the warning - * would make people go look at the respecitive call sites over and - * over again just to find that there's no problem). - * - * And there are cases where it's just not realistic for the compiler - * to prove the count to be in range. For example when multiple call - * sites of a helper function - perhaps in different source files - - * all doing proper range checking, yet the helper function not doing - * so again. - * - * Therefore limit the compile time checking to the constant size - * case, and do only runtime checking for non-constant sizes. - */ - if (likely(sz < 0 || sz >= n)) { check_object_size(to, n, false); n = _copy_from_user(to, from, n); - } else if (__builtin_constant_p(n)) - copy_from_user_overflow(); + } else if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); else - __copy_from_user_overflow(sz, n); + __bad_copy_user(); return n; } @@ -781,21 +734,17 @@ copy_to_user(void __user *to, const void *from, unsigned long n) might_fault(); - /* See the comment in copy_from_user() above. */ if (likely(sz < 0 || sz >= n)) { check_object_size(from, n, true); n = _copy_to_user(to, from, n); - } else if (__builtin_constant_p(n)) - copy_to_user_overflow(); + } else if (!__builtin_constant_p(n)) + copy_user_overflow(sz, n); else - __copy_to_user_overflow(sz, n); + __bad_copy_user(); return n; } -#undef __copy_from_user_overflow -#undef __copy_to_user_overflow - /* * We rely on the nested NMI work to allow atomic faults from the NMI path; the * nested NMI paths are careful to preserve CR2. diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index 1bfa602..5dea1fb 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -72,6 +72,7 @@ struct exception_table_entry /* Returns 0 if exception not found and fixup otherwise. */ extern unsigned long search_exception_table(unsigned long); + /* * architectures with an MMU should override these two */ diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 8dbc892..573c5a1 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -158,7 +158,7 @@ #define __compiler_offsetof(a, b) \ __builtin_offsetof(a, b) -#if GCC_VERSION >= 40100 && GCC_VERSION < 40600 +#if GCC_VERSION >= 40100 # define __compiletime_object_size(obj) __builtin_object_size(obj, 0) #endif diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 2307d7c..2e2cca5 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1686,24 +1686,6 @@ config LATENCYTOP Enable this option if you want to use the LatencyTOP tool to find out which userspace is blocking on what kernel operations. -config ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS - bool - -config DEBUG_STRICT_USER_COPY_CHECKS - bool "Strict user copy size checks" - depends on ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS - depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING - help - Enabling this option turns a certain set of sanity checks for user - copy operations into compile time failures. - - The copy_from_user() etc checks are there to help test if there - are sufficient security checks on the length argument of - the copy operation, by having gcc prove that the argument is - within bounds. - - If unsure, say N. - source kernel/trace/Kconfig menu "Runtime Testing" diff --git a/lib/Makefile b/lib/Makefile index cfa68eb..5dc77a8 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -24,7 +24,6 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o seq_buf.o nmi_backtrace.o nodemask.o -obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o lib-$(CONFIG_HAS_DMA) += dma-noop.o diff --git a/lib/usercopy.c b/lib/usercopy.c deleted file mode 100644 index 4f5b1dd..0000000 --- a/lib/usercopy.c +++ /dev/null @@ -1,9 +0,0 @@ -#include -#include -#include - -void copy_from_user_overflow(void) -{ - WARN(1, "Buffer overflow detected!\n"); -} -EXPORT_SYMBOL(copy_from_user_overflow); -- cgit v0.10.2 From a5d60783df61fbb67b7596b8a0f6b4b2e05251d5 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Tue, 30 Aug 2016 16:11:53 -0400 Subject: dm log writes: move IO accounting earlier to fix error path Move log_one_block()'s atomic_inc(&lc->io_blocks) before bio_alloc() to fix a bug that the target hangs if bio_alloc() fails. The error path does put_io_block(lc), so atomic_inc(&lc->io_blocks) must occur before invoking the error path to avoid underflow of lc->io_blocks. Signed-off-by: Mikulas Patocka Reviewed-by: Josef Bacik Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index 4ab6803..4cc78ae 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -259,12 +259,12 @@ static int log_one_block(struct log_writes_c *lc, goto out; sector++; + atomic_inc(&lc->io_blocks); bio = bio_alloc(GFP_KERNEL, block->vec_cnt); if (!bio) { DMERR("Couldn't alloc log bio"); goto error; } - atomic_inc(&lc->io_blocks); bio->bi_iter.bi_size = 0; bio->bi_iter.bi_sector = sector; bio->bi_bdev = lc->logdev->bdev; -- cgit v0.10.2 From 7efb367320f56fc4d549875b6f3a6940018ef2e5 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Tue, 30 Aug 2016 16:20:55 -0400 Subject: dm log writes: fix bug with too large bios bio_alloc() can allocate a bio with at most BIO_MAX_PAGES (256) vector entries. However, the incoming bio may have more vector entries if it was allocated by other means. For example, bcache submits bios with more than BIO_MAX_PAGES entries. This results in bio_alloc() failure. To avoid the failure, change the code so that it allocates bio with at most BIO_MAX_PAGES entries. If the incoming bio has more entries, bio_add_page() will fail and a new bio will be allocated - the code that handles bio_add_page() failure already exists in the dm-log-writes target. Signed-off-by: Mikulas Patocka Reviewed-by: Josef Bacik Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org # v4.1+ diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index 4cc78ae..ba24f4f 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -260,7 +260,7 @@ static int log_one_block(struct log_writes_c *lc, sector++; atomic_inc(&lc->io_blocks); - bio = bio_alloc(GFP_KERNEL, block->vec_cnt); + bio = bio_alloc(GFP_KERNEL, min(block->vec_cnt, BIO_MAX_PAGES)); if (!bio) { DMERR("Couldn't alloc log bio"); goto error; @@ -282,7 +282,7 @@ static int log_one_block(struct log_writes_c *lc, if (ret != block->vecs[i].bv_len) { atomic_inc(&lc->io_blocks); submit_bio(bio); - bio = bio_alloc(GFP_KERNEL, block->vec_cnt - i); + bio = bio_alloc(GFP_KERNEL, min(block->vec_cnt - i, BIO_MAX_PAGES)); if (!bio) { DMERR("Couldn't alloc log bio"); goto error; -- cgit v0.10.2 From 485a252a5559b45d7df04c819ec91177c62c270b Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 10 Aug 2016 16:28:09 -0700 Subject: seccomp: Fix tracer exit notifications during fatal signals This fixes a ptrace vs fatal pending signals bug as manifested in seccomp now that seccomp was reordered to happen after ptrace. The short version is that seccomp should not attempt to call do_exit() while fatal signals are pending under a tracer. The existing code was trying to be as defensively paranoid as possible, but it now ends up confusing ptrace. Instead, the syscall can just be skipped (which solves the original concern that the do_exit() was addressing) and normal signal handling, tracer notification, and process death can happen. Paraphrasing from the original bug report: If a tracee task is in a PTRACE_EVENT_SECCOMP trap, or has been resumed after such a trap but not yet been scheduled, and another task in the thread-group calls exit_group(), then the tracee task exits without the ptracer receiving a PTRACE_EVENT_EXIT notification. Test case here: https://gist.github.com/khuey/3c43ac247c72cef8c956ca73281c9be7 The bug happens because when __seccomp_filter() detects fatal_signal_pending(), it calls do_exit() without dequeuing the fatal signal. When do_exit() sends the PTRACE_EVENT_EXIT notification and that task is descheduled, __schedule() notices that there is a fatal signal pending and changes its state from TASK_TRACED to TASK_RUNNING. That prevents the ptracer's waitpid() from returning the ptrace event. A more detailed analysis is here: https://github.com/mozilla/rr/issues/1762#issuecomment-237396255. Reported-by: Robert O'Callahan Reported-by: Kyle Huey Tested-by: Kyle Huey Fixes: 93e35efb8de4 ("x86/ptrace: run seccomp after ptrace") Signed-off-by: Kees Cook Acked-by: Oleg Nesterov Acked-by: James Morris diff --git a/kernel/seccomp.c b/kernel/seccomp.c index ef6c6c3..0db7c8a 100644 --- a/kernel/seccomp.c +++ b/kernel/seccomp.c @@ -605,12 +605,16 @@ static int __seccomp_filter(int this_syscall, const struct seccomp_data *sd, ptrace_event(PTRACE_EVENT_SECCOMP, data); /* * The delivery of a fatal signal during event - * notification may silently skip tracer notification. - * Terminating the task now avoids executing a system - * call that may not be intended. + * notification may silently skip tracer notification, + * which could leave us with a potentially unmodified + * syscall that the tracer would have liked to have + * changed. Since the process is about to die, we just + * force the syscall to be skipped and let the signal + * kill the process and correctly handle any tracer exit + * notifications. */ if (fatal_signal_pending(current)) - do_exit(SIGSYS); + goto skip; /* Check if the tracer forced the syscall to be skipped. */ this_syscall = syscall_get_nr(current, task_pt_regs(current)); if (this_syscall < 0) -- cgit v0.10.2 From 91e630d9ae6de6f740ef7c8176736eb55366833e Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Thu, 10 Mar 2016 01:22:19 +0200 Subject: dm log writes: fix check of kthread_run() return value The kthread_run() function returns either a valid task_struct or ERR_PTR() value, check for NULL is invalid. This change fixes potential for oops, e.g. in OOM situation. Signed-off-by: Vladimir Zapolskiy Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index ba24f4f..49e4d8d 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -459,9 +459,9 @@ static int log_writes_ctr(struct dm_target *ti, unsigned int argc, char **argv) goto bad; } - ret = -EINVAL; lc->log_kthread = kthread_run(log_writes_kthread, lc, "log-write"); - if (!lc->log_kthread) { + if (IS_ERR(lc->log_kthread)) { + ret = PTR_ERR(lc->log_kthread); ti->error = "Couldn't alloc kthread"; dm_put_device(ti, lc->dev); dm_put_device(ti, lc->logdev); -- cgit v0.10.2 From 4e870e948fbabf62b78e8410f04c67703e7c816b Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Tue, 30 Aug 2016 16:38:42 -0400 Subject: dm crypt: fix error with too large bios When dm-crypt processes writes, it allocates a new bio in crypt_alloc_buffer(). The bio is allocated from a bio set and it can have at most BIO_MAX_PAGES vector entries, however the incoming bio can be larger (e.g. if it was allocated by bcache). If the incoming bio is larger, bio_alloc_bioset() fails and an error is returned. To avoid the error, we test for a too large bio in the function crypt_map() and use dm_accept_partial_bio() to split the bio. dm_accept_partial_bio() trims the current bio to the desired size and asks DM core to send another bio with the rest of the data. Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org # v3.16+ diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index eedba67..d609566 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1924,6 +1924,13 @@ static int crypt_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_REMAPPED; } + /* + * Check if bio is too large, split as needed. + */ + if (unlikely(bio->bi_iter.bi_size > (BIO_MAX_PAGES << PAGE_SHIFT)) && + bio_data_dir(bio) == WRITE) + dm_accept_partial_bio(bio, ((BIO_MAX_PAGES << PAGE_SHIFT) >> SECTOR_SHIFT)); + io = dm_per_bio_data(bio, cc->per_bio_data_size); crypt_io_init(io, cc, bio, dm_target_offset(ti, bio->bi_iter.bi_sector)); io->ctx.req = (struct skcipher_request *)(io + 1); -- cgit v0.10.2 From 5d0be84ec0cacfc7a6d6ea548afdd07d481324cd Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Tue, 30 Aug 2016 09:51:44 -0700 Subject: dm crypt: fix free of bad values after tfm allocation failure If crypt_alloc_tfms() had to allocate multiple tfms and it failed before the last allocation, then it would call crypt_free_tfms() and could free pointers from uninitialized memory -- due to the crypt_free_tfms() check for non-zero cc->tfms[i]. Fix by allocating zeroed memory. Signed-off-by: Eric Biggers Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index d609566..8742957 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1453,7 +1453,7 @@ static int crypt_alloc_tfms(struct crypt_config *cc, char *ciphermode) unsigned i; int err; - cc->tfms = kmalloc(cc->tfms_count * sizeof(struct crypto_skcipher *), + cc->tfms = kzalloc(cc->tfms_count * sizeof(struct crypto_skcipher *), GFP_KERNEL); if (!cc->tfms) return -ENOMEM; -- cgit v0.10.2 From edd1ea2a8a2549e4fe58e817d539445729491ecf Mon Sep 17 00:00:00 2001 From: Bhaktipriya Shridhar Date: Tue, 30 Aug 2016 22:19:11 +0530 Subject: dm bufio: remove use of deprecated create_singlethread_workqueue() The workqueue "dm_bufio_wq" queues a single work item &dm_bufio_work so it doesn't require execution ordering. Hence, alloc_workqueue() has been used to replace the deprecated create_singlethread_workqueue(). The WQ_MEM_RECLAIM flag has been set since DM requires forward progress under memory pressure. Since there are fixed number of work items, explicit concurrency limit is unnecessary here. Signed-off-by: Bhaktipriya Shridhar Signed-off-by: Mike Snitzer diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index 6571c81..8625040 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -1879,7 +1879,7 @@ static int __init dm_bufio_init(void) __cache_size_refresh(); mutex_unlock(&dm_bufio_clients_lock); - dm_bufio_wq = create_singlethread_workqueue("dm_bufio_cache"); + dm_bufio_wq = alloc_workqueue("dm_bufio_cache", WQ_MEM_RECLAIM, 0); if (!dm_bufio_wq) return -ENOMEM; -- cgit v0.10.2 From bd37e022e334757a5dc1dae41baa29e16befe4ec Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 21 Aug 2016 15:41:44 +0000 Subject: cpufreq: dt: Add terminate entry for of_device_id tables Make sure of_device_id tables are NULL terminated. Signed-off-by: Wei Yongjun Acked-by: Viresh Kumar Fixes: f56aad1d98f1 (cpufreq: dt: Add generic platform-device creation support) CC: 4.7+ # 4.7+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c index 0bb44d5..2ee40fd 100644 --- a/drivers/cpufreq/cpufreq-dt-platdev.c +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -74,6 +74,8 @@ static const struct of_device_id machines[] __initconst = { { .compatible = "ti,omap5", }, { .compatible = "xlnx,zynq-7000", }, + + { } }; static int __init cpufreq_dt_platdev_init(void) -- cgit v0.10.2 From d44c950e9398e639e124014e5872480a37b67259 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 26 Apr 2016 13:38:55 -0700 Subject: PM / runtime: Add _rcuidle suffix to allow rpm_resume() to be called from idle This commit applies another _rcuidle suffix to fix an RCU use from idle. > =============================== > [ INFO: suspicious RCU usage. ] > 4.6.0-rc5-next-20160426+ #1122 Not tainted > ------------------------------- > include/trace/events/rpm.h:69 suspicious rcu_dereference_check() usage! > > other info that might help us debug this: > > > RCU used illegally from idle CPU! > rcu_scheduler_active = 1, debug_locks = 0 > RCU used illegally from extended quiescent state! > 1 lock held by swapper/0/0: > #0: (&(&dev->power.lock)->rlock){-.-...}, at: [] __pm_runtime_resume+0x3c/0x64 > > stack backtrace: > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6.0-rc5-next-20160426+ #1122 > Hardware name: Generic OMAP36xx (Flattened Device Tree) > [] (unwind_backtrace) from [] (show_stack+0x10/0x14) > [] (show_stack) from [] (dump_stack+0xb0/0xe4) > [] (dump_stack) from [] (rpm_resume+0x5cc/0x7f4) > [] (rpm_resume) from [] (__pm_runtime_resume+0x4c/0x64) > [] (__pm_runtime_resume) from [] (omap2_gpio_resume_after_idle+0x54/0x68) > [] (omap2_gpio_resume_after_idle) from [] (omap3_enter_idle_bm+0xfc/0x1ec) > [] (omap3_enter_idle_bm) from [] (cpuidle_enter_state+0x80/0x3d4) > [] (cpuidle_enter_state) from [] (cpu_startup_entry+0x198/0x3a0) > [] (cpu_startup_entry) from [] (start_kernel+0x354/0x3c8) > [] (start_kernel) from [<8000807c>] (0x8000807c) Reported-by: Tony Lindgren Signed-off-by: Paul E. McKenney Tested-by: Tony Lindgren Tested-by: Guenter Roeck Signed-off-by: Rafael J. Wysocki diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index e097d35..76127e1 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -601,7 +601,7 @@ static int rpm_resume(struct device *dev, int rpmflags) struct device *parent = NULL; int retval = 0; - trace_rpm_resume(dev, rpmflags); + trace_rpm_resume_rcuidle(dev, rpmflags); repeat: if (dev->power.runtime_error) @@ -764,7 +764,7 @@ static int rpm_resume(struct device *dev, int rpmflags) spin_lock_irq(&dev->power.lock); } - trace_rpm_return_int(dev, _THIS_IP_, retval); + trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); return retval; } -- cgit v0.10.2 From d7737ce964d944dd07e25b0f569edcd550ede18c Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 26 Apr 2016 13:03:51 -0700 Subject: PM / runtime: Add _rcuidle suffix to allow rpm_idle() use from idle This commit appends a few _rcuidle suffixes to fix the following RCU-used-from-idle bug: > =============================== > [ INFO: suspicious RCU usage. ] > 4.6.0-rc5-next-20160426+ #1116 Not tainted > ------------------------------- > include/trace/events/rpm.h:95 suspicious rcu_dereference_check() usage! > > other info that might help us debug this: > > > RCU used illegally from idle CPU! > rcu_scheduler_active = 1, debug_locks = 0 > RCU used illegally from extended quiescent state! > 1 lock held by swapper/0/0: > #0: (&(&dev->power.lock)->rlock){-.-...}, at: [] __rpm_callback+0x58/0x60 > > stack backtrace: > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6.0-rc5-next-20160426+ #1116 > Hardware name: Generic OMAP36xx (Flattened Device Tree) > [] (unwind_backtrace) from [] (show_stack+0x10/0x14) > [] (show_stack) from [] (dump_stack+0xb0/0xe4) > [] (dump_stack) from [] (rpm_suspend+0x580/0x768) > [] (rpm_suspend) from [] (__pm_runtime_suspend+0x64/0x84) > [] (__pm_runtime_suspend) from [] (omap2_gpio_prepare_for_idle+0x5c/0x70) > [] (omap2_gpio_prepare_for_idle) from [] (omap_sram_idle+0x140/0x244) > [] (omap_sram_idle) from [] (omap3_enter_idle_bm+0xfc/0x1ec) > [] (omap3_enter_idle_bm) from [] (cpuidle_enter_state+0x80/0x3d4) > [] (cpuidle_enter_state) from [] (cpu_startup_entry+0x198/0x3a0) > [] (cpu_startup_entry) from [] (start_kernel+0x354/0x3c8) > [] (start_kernel) from [<8000807c>] (0x8000807c) In the immortal words of Steven Rostedt, "*Whack* *Whack* *Whack*!!!" Reported-by: Tony Lindgren Signed-off-by: Paul E. McKenney Tested-by: Tony Lindgren Tested-by: Guenter Roeck WhACKED-by: Steven Rostedt Signed-off-by: Rafael J. Wysocki diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 76127e1..17995fa 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -301,7 +301,7 @@ static int rpm_idle(struct device *dev, int rpmflags) int (*callback)(struct device *); int retval; - trace_rpm_idle(dev, rpmflags); + trace_rpm_idle_rcuidle(dev, rpmflags); retval = rpm_check_suspend_allowed(dev); if (retval < 0) ; /* Conditions are wrong. */ @@ -337,7 +337,7 @@ static int rpm_idle(struct device *dev, int rpmflags) dev->power.request_pending = true; queue_work(pm_wq, &dev->power.work); } - trace_rpm_return_int(dev, _THIS_IP_, 0); + trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); return 0; } @@ -352,7 +352,7 @@ static int rpm_idle(struct device *dev, int rpmflags) wake_up_all(&dev->power.wait_queue); out: - trace_rpm_return_int(dev, _THIS_IP_, retval); + trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); } -- cgit v0.10.2 From 279cf3f23870f7eb8ca071115e06d3d5ca0a2b9e Mon Sep 17 00:00:00 2001 From: Peter Wu Date: Fri, 26 Aug 2016 01:00:54 +0200 Subject: drm/nouveau/acpi: use DSM if bridge does not support D3cold Even if PR3 support is available on the bridge, it will not be used if the PCI layer considers it unavailable (i.e. on all laptops from 2013 and 2014). Ensure that this condition is checked to allow a fallback to the Optimus DSM for device poweroff. Initially I wanted to call pci_d3cold_enable before checking bridge_d3 (in case the user changed d3cold_allowed), but that is such an unlikely case and likely fragile anyway. The current patch is suggested by Mika in http://www.spinics.net/lists/linux-pci/msg52599.html Cc: Mika Westerberg Signed-off-by: Peter Wu Reviewed-by: Mika Westerberg Signed-off-by: Dave Airlie diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index f2ad17a..dc57b62 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -225,6 +225,17 @@ static bool nouveau_pr3_present(struct pci_dev *pdev) if (!parent_pdev) return false; + if (!parent_pdev->bridge_d3) { + /* + * Parent PCI bridge is currently not power managed. + * Since userspace can change these afterwards to be on + * the safe side we stick with _DSM and prevent usage of + * _PR3 from the bridge. + */ + pci_d3cold_disable(pdev); + return false; + } + parent_adev = ACPI_COMPANION(&parent_pdev->dev); if (!parent_adev) return false; -- cgit v0.10.2 From 237e15dfd5d651868726111c3a9d828bec700490 Mon Sep 17 00:00:00 2001 From: Ashok Raj Nagarajan Date: Fri, 19 Aug 2016 13:37:37 +0300 Subject: ath10k: fix get rx_status from htt context On handling amsdu on rx path, get the rx_status from htt context. Without this fix, we are seeing warnings when running DBDC traffic like this. WARNING: CPU: 0 PID: 0 at net/mac80211/rx.c:4105 ieee80211_rx_napi+0x88/0x7d8 [mac80211]() [ 1715.878248] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.18.21 #1 [ 1715.878273] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 1715.878293] [] (show_stack) from [] (dump_stack+0x70/0xbc) [ 1715.878315] [] (dump_stack) from [] (warn_slowpath_common+0x64/0x88) [ 1715.878339] [] (warn_slowpath_common) from [] (warn_slowpath_null+0x18/0x20) [ 1715.878395] [] (warn_slowpath_null) from [] (ieee80211_rx_napi+0x88/0x7d8 [mac80211]) [ 1715.878474] [] (ieee80211_rx_napi [mac80211]) from [] (ath10k_htt_t2h_msg_handler+0xb48/0xbfc [ath10k_core]) [ 1715.878535] [] (ath10k_htt_t2h_msg_handler [ath10k_core]) from [] (ath10k_htt_t2h_msg_handler+0xbf8/0xbfc [ath10k_core]) [ 1715.878597] [] (ath10k_htt_t2h_msg_handler [ath10k_core]) from [] (ath10k_htt_txrx_compl_task+0xa54/0x1170 [ath10k_core]) [ 1715.878639] [] (ath10k_htt_txrx_compl_task [ath10k_core]) from [] (tasklet_action+0xb4/0x130) [ 1715.878659] [] (tasklet_action) from [] (__do_softirq+0xe0/0x210) [ 1715.878678] [] (__do_softirq) from [] (irq_exit+0x84/0xe0) [ 1715.878700] [] (irq_exit) from [] (__handle_domain_irq+0x98/0xd0) [ 1715.878722] [] (__handle_domain_irq) from [] (gic_handle_irq+0x38/0x5c) [ 1715.878741] [] (gic_handle_irq) from [] (__irq_svc+0x40/0x74) [ 1715.878753] Exception stack(0xc05f9f50 to 0xc05f9f98) [ 1715.878767] 9f40: ffffffed 00000000 00399e1e c000a220 [ 1715.878786] 9f60: 00000000 c05f6780 c05f8000 00000000 c05f5db8 ffffffed c05f8000 c04d1980 [ 1715.878802] 9f80: 00000000 c05f9f98 c0018110 c0018114 60000013 ffffffff [ 1715.878822] [] (__irq_svc) from [] (arch_cpu_idle+0x2c/0x50) [ 1715.878844] [] (arch_cpu_idle) from [] (cpu_startup_entry+0x108/0x234) [ 1715.878866] [] (cpu_startup_entry) from [] (start_kernel+0x33c/0x3b8) [ 1715.878879] ---[ end trace 6d5e1cc0fef8ed6a ]--- [ 1715.878899] ------------[ cut here ]------------ Fixes: 18235664e7f9 ("ath10k: cleanup amsdu processing for rx indication") Signed-off-by: Ashok Raj Nagarajan Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 78db5d6..24c8d65 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1525,7 +1525,7 @@ static void ath10k_htt_rx_h_filter(struct ath10k *ar, static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) { struct ath10k *ar = htt->ar; - static struct ieee80211_rx_status rx_status; + struct ieee80211_rx_status *rx_status = &htt->rx_status; struct sk_buff_head amsdu; int ret; @@ -1549,11 +1549,11 @@ static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) return ret; } - ath10k_htt_rx_h_ppdu(ar, &amsdu, &rx_status, 0xffff); + ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); ath10k_htt_rx_h_unchain(ar, &amsdu, ret > 0); - ath10k_htt_rx_h_filter(ar, &amsdu, &rx_status); - ath10k_htt_rx_h_mpdu(ar, &amsdu, &rx_status); - ath10k_htt_rx_h_deliver(ar, &amsdu, &rx_status); + ath10k_htt_rx_h_filter(ar, &amsdu, rx_status); + ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status); + ath10k_htt_rx_h_deliver(ar, &amsdu, rx_status); return 0; } -- cgit v0.10.2 From 4e80ffab0e722911842b59299dbf8033709673e5 Mon Sep 17 00:00:00 2001 From: Mohammed Shafi Shajakhan Date: Fri, 19 Aug 2016 13:37:37 +0300 Subject: ath10k: Remove driver log suggesting QCA9887 support is experimental Support for QCA9887 is no longer experimental and if there are any issues we need to address them Signed-off-by: Mohammed Shafi Shajakhan Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 9a22c47..07933c5 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -3162,7 +3162,6 @@ static int ath10k_pci_probe(struct pci_dev *pdev, pci_hard_reset = ath10k_pci_qca988x_chip_reset; break; case QCA9887_1_0_DEVICE_ID: - dev_warn(&pdev->dev, "QCA9887 support is still experimental, there are likely bugs. You have been warned.\n"); hw_rev = ATH10K_HW_QCA9887; pci_ps = false; pci_soft_reset = ath10k_pci_warm_reset; -- cgit v0.10.2 From c012268b37db6b10b59dac9b7f45956cb9a8bcb2 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Fri, 5 Aug 2016 14:25:53 -0700 Subject: lkdtm: Mark lkdtm_rodata_do_nothing() notrace lkdtm_rodata_do_nothing() is an empty function which is generated in order to test the non-executability of rodata. Currently if function tracing is enabled then an mcount callsite will be generated for lkdtm_rodata_do_nothing(), and it will appear in the list of available functions for function tracing (available_filter_functions). Given it's purpose purely as a test function, it seems preferable for lkdtm_rodata_do_nothing() to be marked notrace, so it doesn't appear as traceable. This also avoids triggering a linker bug on powerpc: https://sourceware.org/bugzilla/show_bug.cgi?id=20428 When the linker sees code that needs to generate a call stub, eg. a branch to mcount(), it assumes the section is executable and dereferences a NULL pointer leading to a linker segfault. Marking lkdtm_rodata_do_nothing() notrace avoids triggering the bug because the function contains no other function calls. Signed-off-by: Michael Ellerman Signed-off-by: Kees Cook Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/misc/lkdtm_rodata.c b/drivers/misc/lkdtm_rodata.c index 166b1db..3564477 100644 --- a/drivers/misc/lkdtm_rodata.c +++ b/drivers/misc/lkdtm_rodata.c @@ -4,7 +4,7 @@ */ #include "lkdtm.h" -void lkdtm_rodata_do_nothing(void) +void notrace lkdtm_rodata_do_nothing(void) { /* Does nothing. We just want an architecture agnostic "return". */ } -- cgit v0.10.2 From 25eb7e5c7454c9e8407c5382b9fe32d3b45fe163 Mon Sep 17 00:00:00 2001 From: Andreas Noever Date: Tue, 26 Jul 2016 18:40:37 +0200 Subject: thunderbolt: Fix resume quirk for Falcon Ridge 4C. The quirk 'quirk_apple_wait_for_thunderbolt' did not fire on Falcon Ridge 4C controllers with subdevice/subvendor set to zero. This lead to lost pci devices on system resume. Older thunderbolt controllers (pre Falcon Ridge) used the same device id for bridges and for the controller. On Apple hardware the subvendor- & subdevice-ids were set for the controller, but not for bridges. So that is what was used to differentiate between the two. Starting with Falcon Ridge bridges and controllers received different device ids. Additionally on some MacBookPro models (but not all) the subvendor/subdevice was zeroed. Starting with a42fb351c (thunderbolt: Allow loading of module on recent Apple MacBooks with thunderbolt 2 controller) the thunderbolt driver binds to all Falcon Ridge 4C controllers (irregardless of subvendor/subdevice). The corresponding quirk was not updated. This commit changes the quirk to check the device class instead of its subvendor-/subdeviceids. This works for all generations of Thunderbolt controllers. Signed-off-by: Andreas Noever Reviewed-by: Lukas Wunner Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 37ff015..6ff6469 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3328,8 +3328,7 @@ static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev) || (nhi->device != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE && nhi->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C && nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI) - || nhi->subsystem_vendor != 0x2222 - || nhi->subsystem_device != 0x1111) + || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8) goto out; dev_info(&dev->dev, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n"); device_pm_wait_for_dev(&dev->dev, &nhi->dev); -- cgit v0.10.2 From 82a6a81c2a38aa7a7813a0c532637877773c50ae Mon Sep 17 00:00:00 2001 From: Xavier Gnata Date: Tue, 26 Jul 2016 18:40:38 +0200 Subject: thunderbolt: Add support for INTEL_FALCON_RIDGE_2C controller. From: Xavier Gnata Add support to INTEL_FALCON_RIDGE_2C controller and corresponding quirk to support suspend/resume. Tested against 4.7 master on a MacBook Air 11" 2015. Signed-off-by: Andreas Noever Reviewed-by: Lukas Wunner Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 6ff6469..44e0ff3 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3327,6 +3327,7 @@ static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev) if (nhi->vendor != PCI_VENDOR_ID_INTEL || (nhi->device != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE && nhi->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C && + nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI && nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI) || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8) goto out; @@ -3343,6 +3344,9 @@ DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C, quirk_apple_wait_for_thunderbolt); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, + PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE, + quirk_apple_wait_for_thunderbolt); +DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE, quirk_apple_wait_for_thunderbolt); #endif diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c index 9c15344..a8c2041 100644 --- a/drivers/thunderbolt/nhi.c +++ b/drivers/thunderbolt/nhi.c @@ -651,6 +651,12 @@ static struct pci_device_id nhi_ids[] = { { .class = PCI_CLASS_SYSTEM_OTHER << 8, .class_mask = ~0, .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI, + .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, + }, + { + .class = PCI_CLASS_SYSTEM_OTHER << 8, .class_mask = ~0, + .vendor = PCI_VENDOR_ID_INTEL, .device = PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, -- cgit v0.10.2 From ccdf3b888d87df1b914fedde91ed1848f0651c65 Mon Sep 17 00:00:00 2001 From: Lukas Wunner Date: Wed, 3 Aug 2016 10:44:12 +0200 Subject: thunderbolt: Don't declare Falcon Ridge unsupported Falcon Ridge 4C has been supported by the driver from the beginning, Falcon Ridge 2C support was just added. Don't irritate users with a warning declaring the opposite. Signed-off-by: Lukas Wunner Signed-off-by: Andreas Noever Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 1e116f5..9840fde 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -372,7 +372,9 @@ struct tb_switch *tb_switch_alloc(struct tb *tb, u64 route) if (sw->config.device_id != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE && sw->config.device_id != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C && - sw->config.device_id != PCI_DEVICE_ID_INTEL_PORT_RIDGE) + sw->config.device_id != PCI_DEVICE_ID_INTEL_PORT_RIDGE && + sw->config.device_id != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE && + sw->config.device_id != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE) tb_sw_warn(sw, "unsupported switch device id %#x\n", sw->config.device_id); -- cgit v0.10.2 From 04b2d9c9c319277ad4fbbb71855c256a9f4d5f98 Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Wed, 31 Aug 2016 20:15:32 +0900 Subject: ALSA: firewire-tascam: accessing to user space outside spinlock In hwdep interface of firewire-tascam driver, accessing to user space is in a critical section with disabled local interrupt. Depending on architecture, accessing to user space can cause page fault exception. Then local processor stores machine status and handle the synchronous event. A handler corresponding to the event can call task scheduler to wait for preparing pages. In a case of usage of single core processor, the state to disable local interrupt is worse because it doesn't handle usual interrupts from hardware. This commit fixes this bug, by performing the accessing outside spinlock. Reported-by: Vaishali Thakkar Cc: stable@vger.kernel.org Fixes: e5e0c3dd257b('ALSA: firewire-tascam: add hwdep interface') Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai diff --git a/sound/firewire/tascam/tascam-hwdep.c b/sound/firewire/tascam/tascam-hwdep.c index 131267c..106406c 100644 --- a/sound/firewire/tascam/tascam-hwdep.c +++ b/sound/firewire/tascam/tascam-hwdep.c @@ -16,31 +16,14 @@ #include "tascam.h" -static long hwdep_read_locked(struct snd_tscm *tscm, char __user *buf, - long count) -{ - union snd_firewire_event event; - - memset(&event, 0, sizeof(event)); - - event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS; - event.lock_status.status = (tscm->dev_lock_count > 0); - tscm->dev_lock_changed = false; - - count = min_t(long, count, sizeof(event.lock_status)); - - if (copy_to_user(buf, &event, count)) - return -EFAULT; - - return count; -} - static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, loff_t *offset) { struct snd_tscm *tscm = hwdep->private_data; DEFINE_WAIT(wait); - union snd_firewire_event event; + union snd_firewire_event event = { + .lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS, + }; spin_lock_irq(&tscm->lock); @@ -54,10 +37,16 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, spin_lock_irq(&tscm->lock); } - memset(&event, 0, sizeof(event)); - count = hwdep_read_locked(tscm, buf, count); + event.lock_status.status = (tscm->dev_lock_count > 0); + tscm->dev_lock_changed = false; + spin_unlock_irq(&tscm->lock); + count = min_t(long, count, sizeof(event.lock_status)); + + if (copy_to_user(buf, &event, count)) + return -EFAULT; + return count; } -- cgit v0.10.2 From df6a58c5c5aa8ecb1e088ecead3fa33ae70181f1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 17 Jun 2016 17:51:17 -0400 Subject: kernfs: don't depend on d_find_any_alias() when generating notifications kernfs_notify_workfn() sends out file modified events for the scheduled kernfs_nodes. Because the modifications aren't from userland, it doesn't have the matching file struct at hand and can't use fsnotify_modify(). Instead, it looked up the inode and then used d_find_any_alias() to find the dentry and used fsnotify_parent() and fsnotify() directly to generate notifications. The assumption was that the relevant dentries would have been pinned if there are listeners, which isn't true as inotify doesn't pin dentries at all and watching the parent doesn't pin the child dentries even for dnotify. This led to, for example, inotify watchers not getting notifications if the system is under memory pressure and the matching dentries got reclaimed. It can also be triggered through /proc/sys/vm/drop_caches or a remount attempt which involves shrinking dcache. fsnotify_parent() only uses the dentry to access the parent inode, which kernfs can do easily. Update kernfs_notify_workfn() so that it uses fsnotify() directly for both the parent and target inodes without going through d_find_any_alias(). While at it, supply the target file name to fsnotify() from kernfs_node->name. Signed-off-by: Tejun Heo Reported-by: Evgeny Vereshchagin Fixes: d911d9874801 ("kernfs: make kernfs_notify() trigger inotify events too") Cc: John McCutchan Cc: Robert Love Cc: Eric Paris Cc: stable@vger.kernel.org # v3.16+ Signed-off-by: Greg Kroah-Hartman diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c index e157400..2bcb86e 100644 --- a/fs/kernfs/file.c +++ b/fs/kernfs/file.c @@ -840,21 +840,35 @@ repeat: mutex_lock(&kernfs_mutex); list_for_each_entry(info, &kernfs_root(kn)->supers, node) { + struct kernfs_node *parent; struct inode *inode; - struct dentry *dentry; + /* + * We want fsnotify_modify() on @kn but as the + * modifications aren't originating from userland don't + * have the matching @file available. Look up the inodes + * and generate the events manually. + */ inode = ilookup(info->sb, kn->ino); if (!inode) continue; - dentry = d_find_any_alias(inode); - if (dentry) { - fsnotify_parent(NULL, dentry, FS_MODIFY); - fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE, - NULL, 0); - dput(dentry); + parent = kernfs_get_parent(kn); + if (parent) { + struct inode *p_inode; + + p_inode = ilookup(info->sb, parent->ino); + if (p_inode) { + fsnotify(p_inode, FS_MODIFY | FS_EVENT_ON_CHILD, + inode, FSNOTIFY_EVENT_INODE, kn->name, 0); + iput(p_inode); + } + + kernfs_put(parent); } + fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE, + kn->name, 0); iput(inode); } -- cgit v0.10.2 From 96b0af4b729cabd44e237c5a6b9bd4e0ea4ed457 Mon Sep 17 00:00:00 2001 From: Martin Fuzzey Date: Fri, 20 May 2016 14:23:38 +0200 Subject: documentation: drivers/core/of: fix name of of_node symlink commit 5590f3196b29 ("drivers/core/of: Add symlink to device-tree from devices with an OF node") added a symlink called "of_node" to sysfs however the documentation describes it as "of_path". Fix the documentation to match what the code actually does. Signed-off-by: Martin Fuzzey Acked-by: Rob Herring Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/ABI/stable/sysfs-devices b/Documentation/ABI/stable/sysfs-devices index 43f78b88d..df449d7 100644 --- a/Documentation/ABI/stable/sysfs-devices +++ b/Documentation/ABI/stable/sysfs-devices @@ -1,7 +1,7 @@ # Note: This documents additional properties of any device beyond what # is documented in Documentation/sysfs-rules.txt -What: /sys/devices/*/of_path +What: /sys/devices/*/of_node Date: February 2015 Contact: Device Tree mailing list Description: -- cgit v0.10.2 From 17d0774f80681020eccc9638d925a23f1fc4f671 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Wed, 22 Jun 2016 21:42:16 +0300 Subject: sysfs: correctly handle read offset on PREALLOC attrs Attributes declared with __ATTR_PREALLOC use sysfs_kf_read() which returns zero bytes for non-zero offset. This breaks script checkarray in mdadm tool in debian where /bin/sh is 'dash' because its builtin 'read' reads only one byte at a time. Script gets 'i' instead of 'idle' when reads current action from /sys/block/$dev/md/sync_action and as a result does nothing. This patch adds trivial implementation of partial read: generate whole string and move required part into buffer head. Signed-off-by: Konstantin Khlebnikov Fixes: 4ef67a8c95f3 ("sysfs/kernfs: make read requests on pre-alloc files use the buffer.") Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=787950 Cc: Stable # v3.19+ Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index f35523d..b803213 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -114,9 +114,15 @@ static ssize_t sysfs_kf_read(struct kernfs_open_file *of, char *buf, * If buf != of->prealloc_buf, we don't know how * large it is, so cannot safely pass it to ->show */ - if (pos || WARN_ON_ONCE(buf != of->prealloc_buf)) + if (WARN_ON_ONCE(buf != of->prealloc_buf)) return 0; len = ops->show(kobj, of->kn->priv, buf); + if (pos) { + if (len <= pos) + return 0; + len -= pos; + memmove(buf, buf + pos, len); + } return min(count, len); } -- cgit v0.10.2 From 5db4f7f80d165fc9725f356e99feec409e446baa Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 16 Aug 2016 15:06:54 +0300 Subject: Revert "tty/serial/8250: use mctrl_gpio helpers" Serial console is broken in v4.8-rcX. Mika and I independently bisected down to commit 4ef03d328769 ("tty/serial/8250: use mctrl_gpio helpers"). Since neither author nor anyone else didn't propose a solution we better revert it for now. This reverts commit 4ef03d328769eddbfeca1f1c958fdb181a69c341. Link: https://lkml.kernel.org/r/20160809130229.GN1729@lahna.fi.intel.com Signed-off-by: Andy Shevchenko Tested-by: Heikki Krogerus Tested-by: Mika Westerberg Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/devicetree/bindings/serial/8250.txt b/Documentation/devicetree/bindings/serial/8250.txt index f5561ac..936ab5b 100644 --- a/Documentation/devicetree/bindings/serial/8250.txt +++ b/Documentation/devicetree/bindings/serial/8250.txt @@ -42,9 +42,6 @@ Optional properties: - auto-flow-control: one way to enable automatic flow control support. The driver is allowed to detect support for the capability even without this property. -- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD - line respectively. It will use specified GPIO instead of the peripheral - function pin for the UART feature. If unsure, don't specify this property. Note: * fsl,ns16550: @@ -66,19 +63,3 @@ Example: interrupts = <10>; reg-shift = <2>; }; - -Example for OMAP UART using GPIO-based modem control signals: - - uart4: serial@49042000 { - compatible = "ti,omap3-uart"; - reg = <0x49042000 0x400>; - interrupts = <80>; - ti,hwmods = "uart4"; - clock-frequency = <48000000>; - cts-gpios = <&gpio3 5 GPIO_ACTIVE_LOW>; - rts-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>; - dtr-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>; - dsr-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>; - dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>; - rng-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>; - }; diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h index 122e0e4..1a16fea 100644 --- a/drivers/tty/serial/8250/8250.h +++ b/drivers/tty/serial/8250/8250.h @@ -15,8 +15,6 @@ #include #include -#include "../serial_mctrl_gpio.h" - struct uart_8250_dma { int (*tx_dma)(struct uart_8250_port *p); int (*rx_dma)(struct uart_8250_port *p); @@ -133,43 +131,12 @@ void serial8250_em485_destroy(struct uart_8250_port *p); static inline void serial8250_out_MCR(struct uart_8250_port *up, int value) { - int mctrl_gpio = 0; - serial_out(up, UART_MCR, value); - - if (value & UART_MCR_RTS) - mctrl_gpio |= TIOCM_RTS; - if (value & UART_MCR_DTR) - mctrl_gpio |= TIOCM_DTR; - - mctrl_gpio_set(up->gpios, mctrl_gpio); } static inline int serial8250_in_MCR(struct uart_8250_port *up) { - int mctrl, mctrl_gpio = 0; - - mctrl = serial_in(up, UART_MCR); - - /* save current MCR values */ - if (mctrl & UART_MCR_RTS) - mctrl_gpio |= TIOCM_RTS; - if (mctrl & UART_MCR_DTR) - mctrl_gpio |= TIOCM_DTR; - - mctrl_gpio = mctrl_gpio_get_outputs(up->gpios, &mctrl_gpio); - - if (mctrl_gpio & TIOCM_RTS) - mctrl |= UART_MCR_RTS; - else - mctrl &= ~UART_MCR_RTS; - - if (mctrl_gpio & TIOCM_DTR) - mctrl |= UART_MCR_DTR; - else - mctrl &= ~UART_MCR_DTR; - - return mctrl; + return serial_in(up, UART_MCR); } #if defined(__alpha__) && !defined(CONFIG_PCI) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 13ad5c3..dcf43f6 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -974,8 +974,6 @@ int serial8250_register_8250_port(struct uart_8250_port *up) uart = serial8250_find_match_or_unused(&up->port); if (uart && uart->port.type != PORT_8250_CIR) { - struct mctrl_gpios *gpios; - if (uart->port.dev) uart_remove_one_port(&serial8250_reg, &uart->port); @@ -1013,13 +1011,6 @@ int serial8250_register_8250_port(struct uart_8250_port *up) if (up->port.flags & UPF_FIXED_TYPE) uart->port.type = up->port.type; - gpios = mctrl_gpio_init(&uart->port, 0); - if (IS_ERR(gpios)) { - if (PTR_ERR(gpios) != -ENOSYS) - return PTR_ERR(gpios); - } else - uart->gpios = gpios; - serial8250_set_defaults(uart); /* Possibly override default I/O functions. */ diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index e14982f..61ad6c3 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -134,21 +134,18 @@ static void omap8250_set_mctrl(struct uart_port *port, unsigned int mctrl) serial8250_do_set_mctrl(port, mctrl); - if (IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(up->gpios, - UART_GPIO_RTS))) { - /* - * Turn off autoRTS if RTS is lowered and restore autoRTS - * setting if RTS is raised - */ - lcr = serial_in(up, UART_LCR); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS)) - priv->efr |= UART_EFR_RTS; - else - priv->efr &= ~UART_EFR_RTS; - serial_out(up, UART_EFR, priv->efr); - serial_out(up, UART_LCR, lcr); - } + /* + * Turn off autoRTS if RTS is lowered and restore autoRTS setting + * if RTS is raised + */ + lcr = serial_in(up, UART_LCR); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS)) + priv->efr |= UART_EFR_RTS; + else + priv->efr &= ~UART_EFR_RTS; + serial_out(up, UART_EFR, priv->efr); + serial_out(up, UART_LCR, lcr); } /* @@ -449,9 +446,7 @@ static void omap_8250_set_termios(struct uart_port *port, priv->efr = 0; up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); - if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW - && IS_ERR_OR_NULL(mctrl_gpio_to_gpiod(up->gpios, - UART_GPIO_RTS))) { + if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { /* Enable AUTOCTS (autoRTS is enabled when RTS is raised) */ up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; priv->efr |= UART_EFR_CTS; diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 7481b95..bdfa659 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1618,8 +1618,6 @@ static void serial8250_disable_ms(struct uart_port *port) if (up->bugs & UART_BUG_NOMSR) return; - mctrl_gpio_disable_ms(up->gpios); - up->ier &= ~UART_IER_MSI; serial_port_out(port, UART_IER, up->ier); } @@ -1632,8 +1630,6 @@ static void serial8250_enable_ms(struct uart_port *port) if (up->bugs & UART_BUG_NOMSR) return; - mctrl_gpio_enable_ms(up->gpios); - up->ier |= UART_IER_MSI; serial8250_rpm_get(up); @@ -1917,8 +1913,7 @@ unsigned int serial8250_do_get_mctrl(struct uart_port *port) ret |= TIOCM_DSR; if (status & UART_MSR_CTS) ret |= TIOCM_CTS; - - return mctrl_gpio_get(up->gpios, &ret); + return ret; } EXPORT_SYMBOL_GPL(serial8250_do_get_mctrl); diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index c9ec839..7c6f7af 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -6,7 +6,6 @@ config SERIAL_8250 tristate "8250/16550 and compatible serial support" select SERIAL_CORE - select SERIAL_MCTRL_GPIO if GPIOLIB ---help--- This selects whether you want to include the driver for the standard serial ports. The standard answer is Y. People who might say N diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 923266c..48ec765 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -111,7 +111,6 @@ struct uart_8250_port { * if no_console_suspend */ unsigned char probe; - struct mctrl_gpios *gpios; #define UART_PROBE_RSA (1 << 0) /* -- cgit v0.10.2 From 47b34d2ef266e2c283b514d65c8963c2ccd42474 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 1 Jul 2016 17:21:49 +0300 Subject: serial: 8250_mid: fix divide error bug if baud rate is 0 Since the commit c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID"), the 8250 driver crashes in the byt_set_termios() function with a divide error. This is caused by the fact that a baud rate of 0 (B0) is not handled properly. Fix it by falling back to B9600 in this case. Reported-by: "Mendez Salinas, Fernando" Fixes: c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID") Cc: stable@vger.kernel.org Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c index 339de9c..20c5db2 100644 --- a/drivers/tty/serial/8250/8250_mid.c +++ b/drivers/tty/serial/8250/8250_mid.c @@ -168,6 +168,9 @@ static void mid8250_set_termios(struct uart_port *p, unsigned long w = BIT(24) - 1; unsigned long mul, div; + /* Gracefully handle the B0 case: fall back to B9600 */ + fuart = fuart ? fuart : 9600 * 16; + if (mid->board->freq < fuart) { /* Find prescaler value that satisfies Fuart < Fref */ if (mid->board->freq > baud) -- cgit v0.10.2 From 6b1ca4bcadf9ef077cc5f03c6822ba276ed14902 Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Wed, 31 Aug 2016 22:58:42 +0900 Subject: ALSA: fireworks: accessing to user space outside spinlock In hwdep interface of fireworks driver, accessing to user space is in a critical section with disabled local interrupt. Depending on architecture, accessing to user space can cause page fault exception. Then local processor stores machine status and handles the synchronous event. A handler corresponding to the event can call task scheduler to wait for preparing pages. In a case of usage of single core processor, the state to disable local interrupt is worse because it don't handle usual interrupts from hardware. This commit fixes this bug, performing the accessing outside spinlock. This commit also gives up counting the number of queued response messages to simplify ring-buffer management. Reported-by: Vaishali Thakkar Cc: stable@vger.kernel.org Fixes: 555e8a8f7f14('ALSA: fireworks: Add command/response functionality into hwdep interface') Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai diff --git a/sound/firewire/fireworks/fireworks.h b/sound/firewire/fireworks/fireworks.h index 03ed352..d73c12b 100644 --- a/sound/firewire/fireworks/fireworks.h +++ b/sound/firewire/fireworks/fireworks.h @@ -108,7 +108,6 @@ struct snd_efw { u8 *resp_buf; u8 *pull_ptr; u8 *push_ptr; - unsigned int resp_queues; }; int snd_efw_transaction_cmd(struct fw_unit *unit, diff --git a/sound/firewire/fireworks/fireworks_hwdep.c b/sound/firewire/fireworks/fireworks_hwdep.c index 33df865..2e1d9a2 100644 --- a/sound/firewire/fireworks/fireworks_hwdep.c +++ b/sound/firewire/fireworks/fireworks_hwdep.c @@ -25,6 +25,7 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained, { unsigned int length, till_end, type; struct snd_efw_transaction *t; + u8 *pull_ptr; long count = 0; if (remained < sizeof(type) + sizeof(struct snd_efw_transaction)) @@ -38,8 +39,17 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained, buf += sizeof(type); /* write into buffer as many responses as possible */ - while (efw->resp_queues > 0) { - t = (struct snd_efw_transaction *)(efw->pull_ptr); + spin_lock_irq(&efw->lock); + + /* + * When another task reaches here during this task's access to user + * space, it picks up current position in buffer and can read the same + * series of responses. + */ + pull_ptr = efw->pull_ptr; + + while (efw->push_ptr != pull_ptr) { + t = (struct snd_efw_transaction *)(pull_ptr); length = be32_to_cpu(t->length) * sizeof(__be32); /* confirm enough space for this response */ @@ -49,26 +59,39 @@ hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained, /* copy from ring buffer to user buffer */ while (length > 0) { till_end = snd_efw_resp_buf_size - - (unsigned int)(efw->pull_ptr - efw->resp_buf); + (unsigned int)(pull_ptr - efw->resp_buf); till_end = min_t(unsigned int, length, till_end); - if (copy_to_user(buf, efw->pull_ptr, till_end)) + spin_unlock_irq(&efw->lock); + + if (copy_to_user(buf, pull_ptr, till_end)) return -EFAULT; - efw->pull_ptr += till_end; - if (efw->pull_ptr >= efw->resp_buf + - snd_efw_resp_buf_size) - efw->pull_ptr -= snd_efw_resp_buf_size; + spin_lock_irq(&efw->lock); + + pull_ptr += till_end; + if (pull_ptr >= efw->resp_buf + snd_efw_resp_buf_size) + pull_ptr -= snd_efw_resp_buf_size; length -= till_end; buf += till_end; count += till_end; remained -= till_end; } - - efw->resp_queues--; } + /* + * All of tasks can read from the buffer nearly simultaneously, but the + * last position for each task is different depending on the length of + * given buffer. Here, for simplicity, a position of buffer is set by + * the latest task. It's better for a listening application to allow one + * thread to read from the buffer. Unless, each task can read different + * sequence of responses depending on variation of buffer length. + */ + efw->pull_ptr = pull_ptr; + + spin_unlock_irq(&efw->lock); + return count; } @@ -76,14 +99,17 @@ static long hwdep_read_locked(struct snd_efw *efw, char __user *buf, long count, loff_t *offset) { - union snd_firewire_event event; + union snd_firewire_event event = { + .lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS, + }; - memset(&event, 0, sizeof(event)); + spin_lock_irq(&efw->lock); - event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS; event.lock_status.status = (efw->dev_lock_count > 0); efw->dev_lock_changed = false; + spin_unlock_irq(&efw->lock); + count = min_t(long, count, sizeof(event.lock_status)); if (copy_to_user(buf, &event, count)) @@ -98,10 +124,15 @@ hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, { struct snd_efw *efw = hwdep->private_data; DEFINE_WAIT(wait); + bool dev_lock_changed; + bool queued; spin_lock_irq(&efw->lock); - while ((!efw->dev_lock_changed) && (efw->resp_queues == 0)) { + dev_lock_changed = efw->dev_lock_changed; + queued = efw->push_ptr != efw->pull_ptr; + + while (!dev_lock_changed && !queued) { prepare_to_wait(&efw->hwdep_wait, &wait, TASK_INTERRUPTIBLE); spin_unlock_irq(&efw->lock); schedule(); @@ -109,15 +140,17 @@ hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, if (signal_pending(current)) return -ERESTARTSYS; spin_lock_irq(&efw->lock); + dev_lock_changed = efw->dev_lock_changed; + queued = efw->push_ptr != efw->pull_ptr; } - if (efw->dev_lock_changed) + spin_unlock_irq(&efw->lock); + + if (dev_lock_changed) count = hwdep_read_locked(efw, buf, count, offset); - else if (efw->resp_queues > 0) + else if (queued) count = hwdep_read_resp_buf(efw, buf, count, offset); - spin_unlock_irq(&efw->lock); - return count; } @@ -160,7 +193,7 @@ hwdep_poll(struct snd_hwdep *hwdep, struct file *file, poll_table *wait) poll_wait(file, &efw->hwdep_wait, wait); spin_lock_irq(&efw->lock); - if (efw->dev_lock_changed || (efw->resp_queues > 0)) + if (efw->dev_lock_changed || efw->pull_ptr != efw->push_ptr) events = POLLIN | POLLRDNORM; else events = 0; diff --git a/sound/firewire/fireworks/fireworks_proc.c b/sound/firewire/fireworks/fireworks_proc.c index 0639dcb..beb0a0f 100644 --- a/sound/firewire/fireworks/fireworks_proc.c +++ b/sound/firewire/fireworks/fireworks_proc.c @@ -188,8 +188,8 @@ proc_read_queues_state(struct snd_info_entry *entry, else consumed = (unsigned int)(efw->push_ptr - efw->pull_ptr); - snd_iprintf(buffer, "%d %d/%d\n", - efw->resp_queues, consumed, snd_efw_resp_buf_size); + snd_iprintf(buffer, "%d/%d\n", + consumed, snd_efw_resp_buf_size); } static void diff --git a/sound/firewire/fireworks/fireworks_transaction.c b/sound/firewire/fireworks/fireworks_transaction.c index f550808..36a08ba 100644 --- a/sound/firewire/fireworks/fireworks_transaction.c +++ b/sound/firewire/fireworks/fireworks_transaction.c @@ -121,11 +121,11 @@ copy_resp_to_buf(struct snd_efw *efw, void *data, size_t length, int *rcode) size_t capacity, till_end; struct snd_efw_transaction *t; - spin_lock_irq(&efw->lock); - t = (struct snd_efw_transaction *)data; length = min_t(size_t, be32_to_cpu(t->length) * sizeof(u32), length); + spin_lock_irq(&efw->lock); + if (efw->push_ptr < efw->pull_ptr) capacity = (unsigned int)(efw->pull_ptr - efw->push_ptr); else @@ -155,7 +155,6 @@ copy_resp_to_buf(struct snd_efw *efw, void *data, size_t length, int *rcode) } /* for hwdep */ - efw->resp_queues++; wake_up(&efw->hwdep_wait); *rcode = RCODE_COMPLETE; -- cgit v0.10.2 From c8d192428f52f244130b84650ad616df09f2b1e1 Mon Sep 17 00:00:00 2001 From: Jimi Damon Date: Wed, 20 Jul 2016 17:00:40 -0700 Subject: serial: 8250: added acces i/o products quad and octal serial cards Added devices ids for acces i/o products quad and octal serial cards that make use of existing Pericom PI7C9X7954 and PI7C9X7958 configurations . Signed-off-by: Jimi Damon Cc: stable Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 20ebaea..bc51b32 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1950,6 +1950,43 @@ pci_wch_ch38x_setup(struct serial_private *priv, #define PCI_DEVICE_ID_PERICOM_PI7C9X7954 0x7954 #define PCI_DEVICE_ID_PERICOM_PI7C9X7958 0x7958 +#define PCI_VENDOR_ID_ACCESIO 0x494f +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB 0x1051 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S 0x1053 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB 0x105C +#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S 0x105E +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB 0x1091 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2 0x1093 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB 0x1099 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4 0x109B +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB 0x10D1 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM 0x10D3 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB 0x10DA +#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM 0x10DC +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1 0x1108 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2 0x1110 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2 0x1111 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4 0x1118 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4 0x1119 +#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S 0x1152 +#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S 0x115A +#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2 0x1190 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2 0x1191 +#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4 0x1198 +#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4 0x1199 +#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM 0x11D0 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4 0x105A +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4 0x105B +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8 0x106A +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8 0x106B +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4 0x1098 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8 0x10A9 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM 0x10D9 +#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM 0x10E9 +#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM 0x11D8 + + + /* Unknown vendors/cards - this should not be in linux/pci_ids.h */ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584 #define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588 @@ -5113,6 +5150,108 @@ static struct pci_device_id serial_pci_tbl[] = { 0, 0, pbn_pericom_PI7C9X7958 }, /* + * ACCES I/O Products quad + */ + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7954 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + { PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_pericom_PI7C9X7958 }, + /* * Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke) */ { PCI_VENDOR_ID_TOPIC, PCI_DEVICE_ID_TOPIC_TP560, -- cgit v0.10.2 From 31bd44e7687be8a70e1e744e5cb84974b798d568 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 25 Aug 2016 16:49:51 +0800 Subject: crypto: cryptd - Use correct tfm object for AEAD tracking The AEAD code path incorrectly uses the child tfm to track the cryptd refcnt, and then potentially frees the child tfm. Fixes: 81760ea6a95a ("crypto: cryptd - Add helpers to check...") Reported-by: Sowmini Varadhan Signed-off-by: Herbert Xu diff --git a/crypto/cryptd.c b/crypto/cryptd.c index cf8037a..77207b4 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -733,13 +733,14 @@ static void cryptd_aead_crypt(struct aead_request *req, rctx = aead_request_ctx(req); compl = rctx->complete; + tfm = crypto_aead_reqtfm(req); + if (unlikely(err == -EINPROGRESS)) goto out; aead_request_set_tfm(req, child); err = crypt( req ); out: - tfm = crypto_aead_reqtfm(req); ctx = crypto_aead_ctx(tfm); refcnt = atomic_read(&ctx->refcnt); -- cgit v0.10.2 From 8b18e2359aff2ab810aba84cebffc9da07fef78f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Horia=20Geant=C4=83?= Date: Mon, 29 Aug 2016 14:52:14 +0300 Subject: crypto: caam - fix IV loading for authenc (giv)decryption MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For algorithms that implement IV generators before the crypto ops, the IV needed for decryption is initially located in req->src scatterlist, not in req->iv. Avoid copying the IV into req->iv by modifying the (givdecrypt) descriptors to load it directly from req->src. aead_givdecrypt() is no longer needed and goes away. Cc: # 4.3+ Fixes: 479bcc7c5b9e ("crypto: caam - Convert authenc to new AEAD interface") Signed-off-by: Horia Geantă Signed-off-by: Herbert Xu diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 6dc5971..b304421 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -556,7 +556,10 @@ skip_enc: /* Read and write assoclen bytes */ append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + if (alg->caam.geniv) + append_math_add_imm_u32(desc, VARSEQOUTLEN, REG3, IMM, ivsize); + else + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); /* Skip assoc data */ append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); @@ -565,6 +568,14 @@ skip_enc: append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | KEY_VLF); + if (alg->caam.geniv) { + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (ctx1_iv_off << LDST_OFFSET_SHIFT)); + append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_CLASS2INFIFO | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | ivsize); + } + /* Load Counter into CONTEXT1 reg */ if (is_rfc3686) append_load_imm_u32(desc, be32_to_cpu(1), LDST_IMM | @@ -2150,7 +2161,7 @@ static void init_authenc_job(struct aead_request *req, init_aead_job(req, edesc, all_contig, encrypt); - if (ivsize && (is_rfc3686 || !(alg->caam.geniv && encrypt))) + if (ivsize && ((is_rfc3686 && encrypt) || !alg->caam.geniv)) append_load_as_imm(desc, req->iv, ivsize, LDST_CLASS_1_CCB | LDST_SRCDST_BYTE_CONTEXT | @@ -2537,20 +2548,6 @@ static int aead_decrypt(struct aead_request *req) return ret; } -static int aead_givdecrypt(struct aead_request *req) -{ - struct crypto_aead *aead = crypto_aead_reqtfm(req); - unsigned int ivsize = crypto_aead_ivsize(aead); - - if (req->cryptlen < ivsize) - return -EINVAL; - - req->cryptlen -= ivsize; - req->assoclen += ivsize; - - return aead_decrypt(req); -} - /* * allocate and map the ablkcipher extended descriptor for ablkcipher */ @@ -3210,7 +3207,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = MD5_DIGEST_SIZE, }, @@ -3256,7 +3253,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, }, @@ -3302,7 +3299,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA224_DIGEST_SIZE, }, @@ -3348,7 +3345,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA256_DIGEST_SIZE, }, @@ -3394,7 +3391,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA384_DIGEST_SIZE, }, @@ -3440,7 +3437,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA512_DIGEST_SIZE, }, @@ -3486,7 +3483,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = MD5_DIGEST_SIZE, }, @@ -3534,7 +3531,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, }, @@ -3582,7 +3579,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = SHA224_DIGEST_SIZE, }, @@ -3630,7 +3627,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = SHA256_DIGEST_SIZE, }, @@ -3678,7 +3675,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = SHA384_DIGEST_SIZE, }, @@ -3726,7 +3723,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = SHA512_DIGEST_SIZE, }, @@ -3772,7 +3769,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES_BLOCK_SIZE, .maxauthsize = MD5_DIGEST_SIZE, }, @@ -3818,7 +3815,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES_BLOCK_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, }, @@ -3864,7 +3861,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES_BLOCK_SIZE, .maxauthsize = SHA224_DIGEST_SIZE, }, @@ -3910,7 +3907,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES_BLOCK_SIZE, .maxauthsize = SHA256_DIGEST_SIZE, }, @@ -3956,7 +3953,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES_BLOCK_SIZE, .maxauthsize = SHA384_DIGEST_SIZE, }, @@ -4002,7 +3999,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = DES_BLOCK_SIZE, .maxauthsize = SHA512_DIGEST_SIZE, }, @@ -4051,7 +4048,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = MD5_DIGEST_SIZE, }, @@ -4102,7 +4099,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, }, @@ -4153,7 +4150,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA224_DIGEST_SIZE, }, @@ -4204,7 +4201,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA256_DIGEST_SIZE, }, @@ -4255,7 +4252,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA384_DIGEST_SIZE, }, @@ -4306,7 +4303,7 @@ static struct caam_aead_alg driver_aeads[] = { .setkey = aead_setkey, .setauthsize = aead_setauthsize, .encrypt = aead_encrypt, - .decrypt = aead_givdecrypt, + .decrypt = aead_decrypt, .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA512_DIGEST_SIZE, }, -- cgit v0.10.2 From 8e018c21da3febb558586b48c8db0d6d66cb6593 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Thu, 25 Aug 2016 10:09:39 -0700 Subject: raid5-cache: fix a deadlock in superblock write There is a potential deadlock in superblock write. Discard could zero data, so before discard we must make sure superblock is updated to new log tail. Updating superblock (either directly call md_update_sb() or depend on md thread) must hold reconfig mutex. On the other hand, raid5_quiesce is called with reconfig_mutex hold. The first step of raid5_quiesce() is waitting for all IO finish, hence waitting for reclaim thread, while reclaim thread is calling this function and waitting for reconfig mutex. So there is a deadlock. We workaround this issue with a trylock. The downside of the solution is we could miss discard if we can't take reconfig mutex. But this should happen rarely (mainly in raid array stop), so miss discard shouldn't be a big problem. Cc: NeilBrown Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 51f76dd..1b1ab4a 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -96,7 +96,6 @@ struct r5l_log { spinlock_t no_space_stripes_lock; bool need_cache_flush; - bool in_teardown; }; /* @@ -704,31 +703,22 @@ static void r5l_write_super_and_discard_space(struct r5l_log *log, mddev = log->rdev->mddev; /* - * This is to avoid a deadlock. r5l_quiesce holds reconfig_mutex and - * wait for this thread to finish. This thread waits for - * MD_CHANGE_PENDING clear, which is supposed to be done in - * md_check_recovery(). md_check_recovery() tries to get - * reconfig_mutex. Since r5l_quiesce already holds the mutex, - * md_check_recovery() fails, so the PENDING never get cleared. The - * in_teardown check workaround this issue. + * Discard could zero data, so before discard we must make sure + * superblock is updated to new log tail. Updating superblock (either + * directly call md_update_sb() or depend on md thread) must hold + * reconfig mutex. On the other hand, raid5_quiesce is called with + * reconfig_mutex hold. The first step of raid5_quiesce() is waitting + * for all IO finish, hence waitting for reclaim thread, while reclaim + * thread is calling this function and waitting for reconfig mutex. So + * there is a deadlock. We workaround this issue with a trylock. + * FIXME: we could miss discard if we can't take reconfig mutex */ - if (!log->in_teardown) { - set_mask_bits(&mddev->flags, 0, - BIT(MD_CHANGE_DEVS) | BIT(MD_CHANGE_PENDING)); - md_wakeup_thread(mddev->thread); - wait_event(mddev->sb_wait, - !test_bit(MD_CHANGE_PENDING, &mddev->flags) || - log->in_teardown); - /* - * r5l_quiesce could run after in_teardown check and hold - * mutex first. Superblock might get updated twice. - */ - if (log->in_teardown) - md_update_sb(mddev, 1); - } else { - WARN_ON(!mddev_is_locked(mddev)); - md_update_sb(mddev, 1); - } + set_mask_bits(&mddev->flags, 0, + BIT(MD_CHANGE_DEVS) | BIT(MD_CHANGE_PENDING)); + if (!mddev_trylock(mddev)) + return; + md_update_sb(mddev, 1); + mddev_unlock(mddev); /* discard IO error really doesn't matter, ignore it */ if (log->last_checkpoint < end) { @@ -827,7 +817,6 @@ void r5l_quiesce(struct r5l_log *log, int state) if (!log || state == 2) return; if (state == 0) { - log->in_teardown = 0; /* * This is a special case for hotadd. In suspend, the array has * no journal. In resume, journal is initialized as well as the @@ -838,11 +827,6 @@ void r5l_quiesce(struct r5l_log *log, int state) log->reclaim_thread = md_register_thread(r5l_reclaim_thread, log->rdev->mddev, "reclaim"); } else if (state == 1) { - /* - * at this point all stripes are finished, so io_unit is at - * least in STRIPE_END state - */ - log->in_teardown = 1; /* make sure r5l_write_super_and_discard_space exits */ mddev = log->rdev->mddev; wake_up(&mddev->sb_wait); -- cgit v0.10.2 From ad5b0f7685dbfc4730987cd16af3c5ebe8133f10 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Tue, 30 Aug 2016 10:29:33 -0700 Subject: raid5: guarantee enough stripes to avoid reshape hang If there aren't enough stripes, reshape will hang. We have a check for this in new reshape, but miss it for reshape resume, hence we could see hang in reshape resume. This patch forces enough stripes existed if reshape resumes. Reviewed-by: NeilBrown Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index da583bb..b95c54c 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6639,6 +6639,16 @@ static struct r5conf *setup_conf(struct mddev *mddev) } conf->min_nr_stripes = NR_STRIPES; + if (mddev->reshape_position != MaxSector) { + int stripes = max_t(int, + ((mddev->chunk_sectors << 9) / STRIPE_SIZE) * 4, + ((mddev->new_chunk_sectors << 9) / STRIPE_SIZE) * 4); + conf->min_nr_stripes = max(NR_STRIPES, stripes); + if (conf->min_nr_stripes != NR_STRIPES) + printk(KERN_INFO + "md/raid:%s: force stripe size %d for reshape\n", + mdname(mddev), conf->min_nr_stripes); + } memory = conf->min_nr_stripes * (sizeof(struct stripe_head) + max_disks * ((sizeof(struct bio) + PAGE_SIZE))) / 1024; atomic_set(&conf->empty_inactive_list_nr, NR_STRIPE_HASH_LOCKS); -- cgit v0.10.2 From 9f834ec18defc369d73ccf9e87a2790bfa05bf46 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 22 Aug 2016 16:41:46 -0700 Subject: binfmt_elf: switch to new creds when switching to new mm MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We used to delay switching to the new credentials until after we had mapped the executable (and possible elf interpreter). That was kind of odd to begin with, since the new executable will actually then _run_ with the new creds, but whatever. The bigger problem was that we also want to make sure that we turn off prof events and tracing before we start mapping the new executable state. So while this is a cleanup, it's also a fix for a possible information leak. Reported-by: Robert Święcki Tested-by: Peter Zijlstra Acked-by: David Howells Acked-by: Oleg Nesterov Acked-by: Andy Lutomirski Acked-by: Eric W. Biederman Cc: Willy Tarreau Cc: Kees Cook Cc: Al Viro Signed-off-by: Linus Torvalds diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 7f6aff3f..e5495f3 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -853,6 +853,7 @@ static int load_elf_binary(struct linux_binprm *bprm) current->flags |= PF_RANDOMIZE; setup_new_exec(bprm); + install_exec_creds(bprm); /* Do this so that we can load the interpreter, if need be. We will change some of these later */ @@ -1044,7 +1045,6 @@ static int load_elf_binary(struct linux_binprm *bprm) goto out; #endif /* ARCH_HAS_SETUP_ADDITIONAL_PAGES */ - install_exec_creds(bprm); retval = create_elf_tables(bprm, &loc->elf_ex, load_addr, interp_load_addr); if (retval < 0) -- cgit v0.10.2 From 9264251ee2a55bce8fb93826b3f581fb9eb7e2c2 Mon Sep 17 00:00:00 2001 From: Davide Caratti Date: Wed, 31 Aug 2016 14:16:44 +0200 Subject: bridge: re-introduce 'fix parsing of MLDv2 reports' commit bc8c20acaea1 ("bridge: multicast: treat igmpv3 report with INCLUDE and no sources as a leave") seems to have accidentally reverted commit 47cc84ce0c2f ("bridge: fix parsing of MLDv2 reports"). This commit brings back a change to br_ip6_multicast_mld2_report() where parsing of MLDv2 reports stops when the first group is successfully added to the MDB cache. Fixes: bc8c20acaea1 ("bridge: multicast: treat igmpv3 report with INCLUDE and no sources as a leave") Signed-off-by: Davide Caratti Acked-by: Nikolay Aleksandrov Acked-by: Thadeu Lima de Souza Cascardo Signed-off-by: David S. Miller diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index a5423a1..c5fea93 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1138,7 +1138,7 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br, } else { err = br_ip6_multicast_add_group(br, port, &grec->grec_mca, vid); - if (!err) + if (err) break; } } -- cgit v0.10.2 From 10ea9434065e56fe14287f89258ecf2fb684ed1a Mon Sep 17 00:00:00 2001 From: jimqu Date: Tue, 30 Aug 2016 08:59:42 +0800 Subject: drm/amd/amdgpu: sdma resume fail during S4 on CI SDMA could be fail in the thaw() and restore() processes, do software reset if each SDMA engine is busy. Signed-off-by: JimQu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c index ee64669..77fdd99 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c @@ -52,6 +52,7 @@ static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev); static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev); static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev); static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev); +static int cik_sdma_soft_reset(void *handle); MODULE_FIRMWARE("radeon/bonaire_sdma.bin"); MODULE_FIRMWARE("radeon/bonaire_sdma1.bin"); @@ -1037,6 +1038,8 @@ static int cik_sdma_resume(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; + cik_sdma_soft_reset(handle); + return cik_sdma_hw_init(adev); } -- cgit v0.10.2 From 53960b4f89db58bc155d6f8aa0a44ccc59ccb26f Mon Sep 17 00:00:00 2001 From: jimqu Date: Tue, 30 Aug 2016 09:03:16 +0800 Subject: drm/amd/amdgpu: compute ring test fail during S4 on CI unhalt Instrction Fetch Unit after all rings are inited. Signed-off-by: JimQu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index d869d05..425413f 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -2755,8 +2755,7 @@ static int gfx_v7_0_cp_compute_resume(struct amdgpu_device *adev) u64 wb_gpu_addr; u32 *buf; struct bonaire_mqd *mqd; - - gfx_v7_0_cp_compute_enable(adev, true); + struct amdgpu_ring *ring; /* fix up chicken bits */ tmp = RREG32(mmCP_CPF_DEBUG); @@ -2791,7 +2790,7 @@ static int gfx_v7_0_cp_compute_resume(struct amdgpu_device *adev) /* init the queues. Just two for now. */ for (i = 0; i < adev->gfx.num_compute_rings; i++) { - struct amdgpu_ring *ring = &adev->gfx.compute_ring[i]; + ring = &adev->gfx.compute_ring[i]; if (ring->mqd_obj == NULL) { r = amdgpu_bo_create(adev, @@ -2970,6 +2969,13 @@ static int gfx_v7_0_cp_compute_resume(struct amdgpu_device *adev) amdgpu_bo_unreserve(ring->mqd_obj); ring->ready = true; + } + + gfx_v7_0_cp_compute_enable(adev, true); + + for (i = 0; i < adev->gfx.num_compute_rings; i++) { + ring = &adev->gfx.compute_ring[i]; + r = amdgpu_ring_test_ring(ring); if (r) ring->ready = false; -- cgit v0.10.2 From 1f703e6679f373f5bba4efe7093aa82e91af4037 Mon Sep 17 00:00:00 2001 From: Chunming Zhou Date: Tue, 30 Aug 2016 17:59:11 +0800 Subject: drm/amdgpu: record error code when ring test failed MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Otherwise we may miss errors. Signed-off-by: Chunming Zhou Reviewed-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c index a31d7ef..ec1282a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c @@ -280,7 +280,7 @@ void amdgpu_ib_pool_fini(struct amdgpu_device *adev) int amdgpu_ib_ring_tests(struct amdgpu_device *adev) { unsigned i; - int r; + int r, ret = 0; for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { struct amdgpu_ring *ring = adev->rings[i]; @@ -301,10 +301,11 @@ int amdgpu_ib_ring_tests(struct amdgpu_device *adev) } else { /* still not good, but we can live with it */ DRM_ERROR("amdgpu: failed testing IB on ring %d (%d).\n", i, r); + ret = r; } } } - return 0; + return ret; } /* -- cgit v0.10.2 From cd81a9170e69e018bbaba547c1fd85a585f5697a Mon Sep 17 00:00:00 2001 From: Mateusz Guzik Date: Tue, 23 Aug 2016 16:20:38 +0200 Subject: mm: introduce get_task_exe_file For more convenient access if one has a pointer to the task. As a minor nit take advantage of the fact that only task lock + rcu are needed to safely grab ->exe_file. This saves mm refcount dance. Use the helper in proc_exe_link. Signed-off-by: Mateusz Guzik Acked-by: Konstantin Khlebnikov Acked-by: Richard Guy Briggs Cc: # 4.3.x Signed-off-by: Paul Moore diff --git a/fs/proc/base.c b/fs/proc/base.c index 0d163a8..da8b194 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1552,18 +1552,13 @@ static const struct file_operations proc_pid_set_comm_operations = { static int proc_exe_link(struct dentry *dentry, struct path *exe_path) { struct task_struct *task; - struct mm_struct *mm; struct file *exe_file; task = get_proc_task(d_inode(dentry)); if (!task) return -ENOENT; - mm = get_task_mm(task); + exe_file = get_task_exe_file(task); put_task_struct(task); - if (!mm) - return -ENOENT; - exe_file = get_mm_exe_file(mm); - mmput(mm); if (exe_file) { *exe_path = exe_file->f_path; path_get(&exe_file->f_path); diff --git a/include/linux/mm.h b/include/linux/mm.h index 8f468e0..004c73a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1987,6 +1987,7 @@ extern void mm_drop_all_locks(struct mm_struct *mm); extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file); extern struct file *get_mm_exe_file(struct mm_struct *mm); +extern struct file *get_task_exe_file(struct task_struct *task); extern bool may_expand_vm(struct mm_struct *, vm_flags_t, unsigned long npages); extern void vm_stat_account(struct mm_struct *, vm_flags_t, long npages); diff --git a/kernel/fork.c b/kernel/fork.c index d277e83..42451ae 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -774,6 +774,29 @@ struct file *get_mm_exe_file(struct mm_struct *mm) EXPORT_SYMBOL(get_mm_exe_file); /** + * get_task_exe_file - acquire a reference to the task's executable file + * + * Returns %NULL if task's mm (if any) has no associated executable file or + * this is a kernel thread with borrowed mm (see the comment above get_task_mm). + * User must release file via fput(). + */ +struct file *get_task_exe_file(struct task_struct *task) +{ + struct file *exe_file = NULL; + struct mm_struct *mm; + + task_lock(task); + mm = task->mm; + if (mm) { + if (!(task->flags & PF_KTHREAD)) + exe_file = get_mm_exe_file(mm); + } + task_unlock(task); + return exe_file; +} +EXPORT_SYMBOL(get_task_exe_file); + +/** * get_task_mm - acquire a reference to the task's mm * * Returns %NULL if the task has no mm. Checks PF_KTHREAD (meaning -- cgit v0.10.2 From 5efc244346f9f338765da3d592f7947b0afdc4b5 Mon Sep 17 00:00:00 2001 From: Mateusz Guzik Date: Tue, 23 Aug 2016 16:20:39 +0200 Subject: audit: fix exe_file access in audit_exe_compare Prior to the change the function would blindly deference mm, exe_file and exe_file->f_inode, each of which could have been NULL or freed. Use get_task_exe_file to safely obtain stable exe_file. Signed-off-by: Mateusz Guzik Acked-by: Konstantin Khlebnikov Acked-by: Richard Guy Briggs Cc: # 4.3.x Signed-off-by: Paul Moore diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c index 3cf1c59..4846691 100644 --- a/kernel/audit_watch.c +++ b/kernel/audit_watch.c @@ -19,6 +19,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include #include #include #include @@ -544,10 +545,11 @@ int audit_exe_compare(struct task_struct *tsk, struct audit_fsnotify_mark *mark) unsigned long ino; dev_t dev; - rcu_read_lock(); - exe_file = rcu_dereference(tsk->mm->exe_file); + exe_file = get_task_exe_file(tsk); + if (!exe_file) + return 0; ino = exe_file->f_inode->i_ino; dev = exe_file->f_inode->i_sb->s_dev; - rcu_read_unlock(); + fput(exe_file); return audit_mark_compare(mark, ino, dev); } -- cgit v0.10.2 From c6f1dc4d9ce275c1bd9d90b5630f36ca6abccc97 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:27 +0800 Subject: net: ethernet: mediatek: fix fails from TX housekeeping due to incorrect port setup which net device the SKB is complete for depends on the forward port on txd4 on the corresponding TX descriptor, but the information isn't set up well in case of SKB fragments that would lead to watchdog timeout from the upper layer, so fix it up. Signed-off-by: Sean Wang Acked-by: John Crispin Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index f160954..7fc2ff0 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -588,14 +588,15 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, dma_addr_t mapped_addr; unsigned int nr_frags; int i, n_desc = 1; - u32 txd4 = 0; + u32 txd4 = 0, fport; itxd = ring->next_free; if (itxd == ring->last_free) return -ENOMEM; /* set the forward port */ - txd4 |= (mac->id + 1) << TX_DMA_FPORT_SHIFT; + fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT; + txd4 |= fport; tx_buf = mtk_desc_to_tx_buf(ring, itxd); memset(tx_buf, 0, sizeof(*tx_buf)); @@ -653,7 +654,7 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, WRITE_ONCE(txd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(frag_map_size) | last_frag * TX_DMA_LS0)); - WRITE_ONCE(txd->txd4, 0); + WRITE_ONCE(txd->txd4, fport); tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; tx_buf = mtk_desc_to_tx_buf(ring, txd); -- cgit v0.10.2 From 549e5495467ac2a76489f1304e2b4a7ad85e1644 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:28 +0800 Subject: net: ethernet: mediatek: fix incorrect return value of devm_clk_get with EPROBE_DEFER 1) If the return value of devm_clk_get is EPROBE_DEFER, we should defer probing the driver. The change is verified and works based on 4.8-rc1 staying with the latest clk-next code for MT7623. 2) Changing with the usage of loops to work out if all clocks required are fine Signed-off-by: Sean Wang Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 7fc2ff0..a5dcf57 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -50,6 +50,10 @@ static const struct mtk_ethtool_stats { MTK_ETHTOOL_STAT(rx_flow_control_packets), }; +static const char * const mtk_clks_source_name[] = { + "ethif", "esw", "gp1", "gp2" +}; + void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg) { __raw_writel(val, eth->base + reg); @@ -1814,6 +1818,7 @@ static int mtk_probe(struct platform_device *pdev) if (!eth) return -ENOMEM; + eth->dev = &pdev->dev; eth->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(eth->base)) return PTR_ERR(eth->base); @@ -1848,21 +1853,21 @@ static int mtk_probe(struct platform_device *pdev) return -ENXIO; } } + for (i = 0; i < ARRAY_SIZE(eth->clks); i++) { + eth->clks[i] = devm_clk_get(eth->dev, + mtk_clks_source_name[i]); + if (IS_ERR(eth->clks[i])) { + if (PTR_ERR(eth->clks[i]) == -EPROBE_DEFER) + return -EPROBE_DEFER; + return -ENODEV; + } + } - eth->clk_ethif = devm_clk_get(&pdev->dev, "ethif"); - eth->clk_esw = devm_clk_get(&pdev->dev, "esw"); - eth->clk_gp1 = devm_clk_get(&pdev->dev, "gp1"); - eth->clk_gp2 = devm_clk_get(&pdev->dev, "gp2"); - if (IS_ERR(eth->clk_esw) || IS_ERR(eth->clk_gp1) || - IS_ERR(eth->clk_gp2) || IS_ERR(eth->clk_ethif)) - return -ENODEV; - - clk_prepare_enable(eth->clk_ethif); - clk_prepare_enable(eth->clk_esw); - clk_prepare_enable(eth->clk_gp1); - clk_prepare_enable(eth->clk_gp2); + clk_prepare_enable(eth->clks[MTK_CLK_ETHIF]); + clk_prepare_enable(eth->clks[MTK_CLK_ESW]); + clk_prepare_enable(eth->clks[MTK_CLK_GP1]); + clk_prepare_enable(eth->clks[MTK_CLK_GP2]); - eth->dev = &pdev->dev; eth->msg_enable = netif_msg_init(mtk_msg_level, MTK_DEFAULT_MSG_ENABLE); INIT_WORK(ð->pending_work, mtk_pending_work); @@ -1905,10 +1910,10 @@ static int mtk_remove(struct platform_device *pdev) { struct mtk_eth *eth = platform_get_drvdata(pdev); - clk_disable_unprepare(eth->clk_ethif); - clk_disable_unprepare(eth->clk_esw); - clk_disable_unprepare(eth->clk_gp1); - clk_disable_unprepare(eth->clk_gp2); + clk_disable_unprepare(eth->clks[MTK_CLK_ETHIF]); + clk_disable_unprepare(eth->clks[MTK_CLK_ESW]); + clk_disable_unprepare(eth->clks[MTK_CLK_GP1]); + clk_disable_unprepare(eth->clks[MTK_CLK_GP2]); netif_napi_del(ð->tx_napi); netif_napi_del(ð->rx_napi); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index f82e3ac..6e1ade7 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -290,6 +290,17 @@ enum mtk_tx_flags { MTK_TX_FLAGS_PAGE0 = 0x02, }; +/* This enum allows us to identify how the clock is defined on the array of the + * clock in the order + */ +enum mtk_clks_map { + MTK_CLK_ETHIF, + MTK_CLK_ESW, + MTK_CLK_GP1, + MTK_CLK_GP2, + MTK_CLK_MAX +}; + /* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at * by the TX descriptor s * @skb: The SKB pointer of the packet being sent @@ -370,10 +381,7 @@ struct mtk_rx_ring { * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring * @phy_scratch_ring: physical address of scratch_ring * @scratch_head: The scratch memory that scratch_ring points to. - * @clk_ethif: The ethif clock - * @clk_esw: The switch clock - * @clk_gp1: The gmac1 clock - * @clk_gp2: The gmac2 clock + * @clks: clock array for all clocks required * @mii_bus: If there is a bus we need to create an instance for it * @pending_work: The workqueue used to reset the dma ring */ @@ -400,10 +408,8 @@ struct mtk_eth { struct mtk_tx_dma *scratch_ring; dma_addr_t phy_scratch_ring; void *scratch_head; - struct clk *clk_ethif; - struct clk *clk_esw; - struct clk *clk_gp1; - struct clk *clk_gp2; + struct clk *clks[MTK_CLK_MAX]; + struct mii_bus *mii_bus; struct work_struct pending_work; }; -- cgit v0.10.2 From 1b43079906367d4d6e1ad00f04fff525a32e26c4 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:29 +0800 Subject: net: ethernet: mediatek: fix API usage with skb_free_frag use skb_free_frag() instead of legacy put_page() Signed-off-by: Sean Wang Acked-by: John Crispin Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index a5dcf57..c9e25a7 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -870,7 +870,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, /* receive data */ skb = build_skb(data, ring->frag_size); if (unlikely(!skb)) { - put_page(virt_to_head_page(new_data)); + skb_free_frag(new_data); netdev->stats.rx_dropped++; goto release_desc; } -- cgit v0.10.2 From d3bd1ce4db8e843dce421e2f8f123e5251a9c7d3 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:30 +0800 Subject: net: ethernet: mediatek: remove redundant free_irq for devm_request_irq allocated irq these irqs are not used for shared irq and disabled during ethernet stops. irq requested by devm_request_irq is safe to be freed automatically on driver detach. Signed-off-by: Sean Wang Acked-by: John Crispin Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index c9e25a7..1ffde91 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1513,8 +1513,6 @@ static void mtk_uninit(struct net_device *dev) phy_disconnect(mac->phy_dev); mtk_mdio_cleanup(eth); mtk_irq_disable(eth, ~0); - free_irq(eth->irq[1], dev); - free_irq(eth->irq[2], dev); } static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -- cgit v0.10.2 From 7c6b0d76fa02213393815e3b6d5e4a415bf3f0e2 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:31 +0800 Subject: net: ethernet: mediatek: fix logic unbalance between probe and remove original mdio_cleanup is not in the symmetric place against where mdio_init is, so relocate mdio_cleanup to the right one. Signed-off-by: Sean Wang Acked-by: John Crispin Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 1ffde91..bf5b7e1 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1511,7 +1511,6 @@ static void mtk_uninit(struct net_device *dev) struct mtk_eth *eth = mac->hw; phy_disconnect(mac->phy_dev); - mtk_mdio_cleanup(eth); mtk_irq_disable(eth, ~0); } @@ -1916,6 +1915,7 @@ static int mtk_remove(struct platform_device *pdev) netif_napi_del(ð->tx_napi); netif_napi_del(ð->rx_napi); mtk_cleanup(eth); + mtk_mdio_cleanup(eth); platform_set_drvdata(pdev, NULL); return 0; -- cgit v0.10.2 From 79e9a41438527a4cc2b426a2dfb92cd0825d7d29 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:32 +0800 Subject: net: ethernet: mediatek: fix issue of driver removal with interface is up mtk_stop() must be called to stop for freeing DMA resources acquired and restoring state changed by mtk_open() firstly when module removal. Signed-off-by: Sean Wang Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index bf5b7e1..556951e 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1906,6 +1906,14 @@ err_free_dev: static int mtk_remove(struct platform_device *pdev) { struct mtk_eth *eth = platform_get_drvdata(pdev); + int i; + + /* stop all devices to make sure that dma is properly shut down */ + for (i = 0; i < MTK_MAC_COUNT; i++) { + if (!eth->netdev[i]) + continue; + mtk_stop(eth->netdev[i]); + } clk_disable_unprepare(eth->clks[MTK_CLK_ETHIF]); clk_disable_unprepare(eth->clks[MTK_CLK_ESW]); -- cgit v0.10.2 From b5776f01bf1f36a6c89c6dc407dda6509002e0d7 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:33 +0800 Subject: net: ethernet: mediatek: fix the missing of_node_put() after node is used done inside mtk_mdio_init This patch adds the missing of_node_put() after finishing the usage of of_get_child_by_name. Signed-off-by: Sean Wang Acked-by: John Crispin Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 556951e..409efcf 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -324,6 +324,7 @@ static int mtk_mdio_init(struct mtk_eth *eth) err = of_mdiobus_register(eth->mii_bus, mii_np); if (err) goto err_free_bus; + of_node_put(mii_np); return 0; -- cgit v0.10.2 From 1e515b7fdbaeef29b1025c09b50ebbb132a39208 Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:34 +0800 Subject: net: ethernet: mediatek: use devm_mdiobus_alloc instead of mdiobus_alloc inside mtk_mdio_init a lot of parts in the driver uses devm_* APIs to gain benefits from the device resource management, so devm_mdiobus_alloc is also used instead of mdiobus_alloc to have more elegant code flow. Using common code provided by the devm_* helps to 1) have simplified the code flow as [1] says 2) decrease the risk of incorrect error handling by human 3) only a few drivers used it since it was proposed on linux 3.16, so just hope to promote for this. Ref: [1] https://patchwork.ozlabs.org/patch/344093/ Signed-off-by: Sean Wang Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 409efcf..0367f51 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -295,7 +295,7 @@ err_phy: static int mtk_mdio_init(struct mtk_eth *eth) { struct device_node *mii_np; - int err; + int ret; mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); if (!mii_np) { @@ -304,13 +304,13 @@ static int mtk_mdio_init(struct mtk_eth *eth) } if (!of_device_is_available(mii_np)) { - err = 0; + ret = 0; goto err_put_node; } - eth->mii_bus = mdiobus_alloc(); + eth->mii_bus = devm_mdiobus_alloc(eth->dev); if (!eth->mii_bus) { - err = -ENOMEM; + ret = -ENOMEM; goto err_put_node; } @@ -321,20 +321,11 @@ static int mtk_mdio_init(struct mtk_eth *eth) eth->mii_bus->parent = eth->dev; snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%s", mii_np->name); - err = of_mdiobus_register(eth->mii_bus, mii_np); - if (err) - goto err_free_bus; - of_node_put(mii_np); - - return 0; - -err_free_bus: - mdiobus_free(eth->mii_bus); + ret = of_mdiobus_register(eth->mii_bus, mii_np); err_put_node: of_node_put(mii_np); - eth->mii_bus = NULL; - return err; + return ret; } static void mtk_mdio_cleanup(struct mtk_eth *eth) @@ -343,8 +334,6 @@ static void mtk_mdio_cleanup(struct mtk_eth *eth) return; mdiobus_unregister(eth->mii_bus); - of_node_put(eth->mii_bus->dev.of_node); - mdiobus_free(eth->mii_bus); } static inline void mtk_irq_disable(struct mtk_eth *eth, u32 mask) -- cgit v0.10.2 From aa6e8a54f653daaf34ff7fdceb2d992d714eea7c Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Thu, 1 Sep 2016 10:47:35 +0800 Subject: net: ethernet: mediatek: fix error handling inside mtk_mdio_init Return -ENODEV if the MDIO bus is disabled in the device tree. Signed-off-by: Sean Wang Acked-by: John Crispin Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 0367f51..d919915 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -304,7 +304,7 @@ static int mtk_mdio_init(struct mtk_eth *eth) } if (!of_device_is_available(mii_np)) { - ret = 0; + ret = -ENODEV; goto err_put_node; } -- cgit v0.10.2 From c0338aff2260ea6c092806312dbb154cec07a242 Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Sun, 28 Aug 2016 21:28:26 -0700 Subject: kcm: fix a socket double free Dmitry reported a double free on kcm socket, which could be easily reproduced by: #include #include int main() { int fd = syscall(SYS_socket, 0x29ul, 0x5ul, 0x0ul, 0, 0, 0); syscall(SYS_ioctl, fd, 0x89e2ul, 0x20a98000ul, 0, 0, 0); return 0; } This is because on the error path, after we install the new socket file, we call sock_release() to clean up the socket, which leaves the fd pointing to a freed socket. Fix this by calling sys_close() on that fd directly. Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module") Reported-by: Dmitry Vyukov Cc: Tom Herbert Signed-off-by: Cong Wang Signed-off-by: David S. Miller diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c index cb39e05..4116932 100644 --- a/net/kcm/kcmsock.c +++ b/net/kcm/kcmsock.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -2029,7 +2030,7 @@ static int kcm_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) if (copy_to_user((void __user *)arg, &info, sizeof(info))) { err = -EFAULT; - sock_release(newsock); + sys_close(info.fd); } } -- cgit v0.10.2 From 5fe118c9fd6b8e129788c88a10ac0af82b255f81 Mon Sep 17 00:00:00 2001 From: Sudarsana Reddy Kalluru Date: Mon, 29 Aug 2016 08:29:52 -0400 Subject: qed*: Disallow dcbx configuration for VF interfaces. Dcbx configuration is not supported for VF interfaces. Hence don't populate the callbacks for VFs and also fail the dcbx-query for VFs. Signed-off-by: Sudarsana Reddy Kalluru Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c index 226cb08..7ad1667 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c @@ -19,6 +19,7 @@ #include "qed_dcbx.h" #include "qed_hsi.h" #include "qed_sp.h" +#include "qed_sriov.h" #ifdef CONFIG_DCB #include #endif @@ -945,6 +946,9 @@ static int qed_dcbx_query_params(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt; int rc; + if (IS_VF(p_hwfn->cdev)) + return -EINVAL; + p_ptt = qed_ptt_acquire(p_hwfn); if (!p_ptt) return -EBUSY; diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index a6eb6af..9544e4c 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -2520,7 +2520,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level, edev->ops->register_ops(cdev, &qede_ll_ops, edev); #ifdef CONFIG_DCB - qede_set_dcbnl_ops(edev->ndev); + if (!IS_VF(edev)) + qede_set_dcbnl_ops(edev->ndev); #endif INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task); -- cgit v0.10.2 From 5ec5dfa4d29448002bb05018ba12620e7fafffd1 Mon Sep 17 00:00:00 2001 From: Sudarsana Reddy Kalluru Date: Mon, 29 Aug 2016 08:29:53 -0400 Subject: qed: Set selection-field while configuring the app entry in ieee mode. Management firmware requires the selection-field (SF) to be set for configuring the application/protocol entry in IEEE mode. Without this setting, the app entry will be configured incorrectly in MFW. Signed-off-by: Sudarsana Reddy Kalluru Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c index 7ad1667..192a886 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c @@ -1063,23 +1063,31 @@ qed_dcbx_set_app_data(struct qed_hwfn *p_hwfn, for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) { entry = &p_app->app_pri_tbl[i].entry; if (ieee) { - *entry &= ~DCBX_APP_SF_IEEE_MASK; + *entry &= ~(DCBX_APP_SF_IEEE_MASK | DCBX_APP_SF_MASK); switch (p_params->app_entry[i].sf_ieee) { case QED_DCBX_SF_IEEE_ETHTYPE: *entry |= ((u32)DCBX_APP_SF_IEEE_ETHTYPE << DCBX_APP_SF_IEEE_SHIFT); + *entry |= ((u32)DCBX_APP_SF_ETHTYPE << + DCBX_APP_SF_SHIFT); break; case QED_DCBX_SF_IEEE_TCP_PORT: *entry |= ((u32)DCBX_APP_SF_IEEE_TCP_PORT << DCBX_APP_SF_IEEE_SHIFT); + *entry |= ((u32)DCBX_APP_SF_PORT << + DCBX_APP_SF_SHIFT); break; case QED_DCBX_SF_IEEE_UDP_PORT: *entry |= ((u32)DCBX_APP_SF_IEEE_UDP_PORT << DCBX_APP_SF_IEEE_SHIFT); + *entry |= ((u32)DCBX_APP_SF_PORT << + DCBX_APP_SF_SHIFT); break; case QED_DCBX_SF_IEEE_TCP_UDP_PORT: *entry |= ((u32)DCBX_APP_SF_IEEE_TCP_UDP_PORT << DCBX_APP_SF_IEEE_SHIFT); + *entry |= ((u32)DCBX_APP_SF_PORT << + DCBX_APP_SF_SHIFT); break; } } else { -- cgit v0.10.2 From c5e801dac4daff972013613ae3edae6668b2aa7c Mon Sep 17 00:00:00 2001 From: Sudarsana Reddy Kalluru Date: Mon, 29 Aug 2016 08:29:54 -0400 Subject: qed: Clear dcbx memory buffers before the usage. This patch takes care of clearing the uninitialized buffer before using it. 1. pfc pri-enable bitmap need to be cleared before setting the requested enable bits. Without this, the un-touched values will be merged with requested values and sent to MFW. 2. The data in app-entry field need to be cleared before using it. 3. Clear the output data buffer used in qed_dcbx_query_params(). Signed-off-by: Sudarsana Reddy Kalluru Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c index 192a886..ad023fe 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c @@ -988,6 +988,7 @@ qed_dcbx_set_pfc_data(struct qed_hwfn *p_hwfn, if (p_params->pfc.prio[i]) pfc_map |= BIT(i); + *pfc &= ~DCBX_PFC_PRI_EN_BITMAP_MASK; *pfc |= (pfc_map << DCBX_PFC_PRI_EN_BITMAP_SHIFT); DP_VERBOSE(p_hwfn, QED_MSG_DCB, "pfc = 0x%x\n", *pfc); @@ -1062,6 +1063,7 @@ qed_dcbx_set_app_data(struct qed_hwfn *p_hwfn, for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) { entry = &p_app->app_pri_tbl[i].entry; + *entry = 0; if (ieee) { *entry &= ~(DCBX_APP_SF_IEEE_MASK | DCBX_APP_SF_MASK); switch (p_params->app_entry[i].sf_ieee) { @@ -1193,6 +1195,7 @@ int qed_dcbx_get_config_params(struct qed_hwfn *p_hwfn, return -ENOMEM; } + memset(dcbx_info, 0, sizeof(*dcbx_info)); rc = qed_dcbx_query_params(p_hwfn, dcbx_info, QED_DCBX_OPERATIONAL_MIB); if (rc) { kfree(dcbx_info); @@ -1230,6 +1233,7 @@ static struct qed_dcbx_get *qed_dcbnl_get_dcbx(struct qed_hwfn *hwfn, return NULL; } + memset(dcbx_info, 0, sizeof(*dcbx_info)); if (qed_dcbx_query_params(hwfn, dcbx_info, type)) { kfree(dcbx_info); return NULL; -- cgit v0.10.2 From 38b256973ea90fc7c2b7e1b734fa0e8b83538d50 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:11:59 +0200 Subject: ovl: handle umask and posix_acl_default correctly on creation Setting MS_POSIXACL in sb->s_flags has the side effect of passing mode to create functions without masking against umask. Another problem when creating over a whiteout is that the default posix acl is not inherited from the parent dir (because the real parent dir at the time of creation is the work directory). Fix these problems by: a) If upper fs does not have MS_POSIXACL, then mask mode with umask. b) If creating over a whiteout, call posix_acl_create() to get the inherited acls. After creation (but before moving to the final destination) set these acls on the created file. posix_acl_create() also updates the file creation mode as appropriate. Fixes: 39a25b2b3762 ("ovl: define ->get_acl() for overlay inodes") Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 12bcd07..f485dd4 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -12,6 +12,8 @@ #include #include #include +#include +#include #include "overlayfs.h" void ovl_cleanup(struct inode *wdir, struct dentry *wdentry) @@ -186,6 +188,9 @@ static int ovl_create_upper(struct dentry *dentry, struct inode *inode, struct dentry *newdentry; int err; + if (!hardlink && !IS_POSIXACL(udir)) + stat->mode &= ~current_umask(); + inode_lock_nested(udir, I_MUTEX_PARENT); newdentry = lookup_one_len(dentry->d_name.name, upperdir, dentry->d_name.len); @@ -335,6 +340,32 @@ out_free: return ret; } +static int ovl_set_upper_acl(struct dentry *upperdentry, const char *name, + const struct posix_acl *acl) +{ + void *buffer; + size_t size; + int err; + + if (!IS_ENABLED(CONFIG_FS_POSIX_ACL) || !acl) + return 0; + + size = posix_acl_to_xattr(NULL, acl, NULL, 0); + buffer = kmalloc(size, GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + size = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); + err = size; + if (err < 0) + goto out_free; + + err = vfs_setxattr(upperdentry, name, buffer, size, XATTR_CREATE); +out_free: + kfree(buffer); + return err; +} + static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode, struct kstat *stat, const char *link, struct dentry *hardlink) @@ -346,10 +377,18 @@ static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode, struct dentry *upper; struct dentry *newdentry; int err; + struct posix_acl *acl, *default_acl; if (WARN_ON(!workdir)) return -EROFS; + if (!hardlink) { + err = posix_acl_create(dentry->d_parent->d_inode, + &stat->mode, &default_acl, &acl); + if (err) + return err; + } + err = ovl_lock_rename_workdir(workdir, upperdir); if (err) goto out; @@ -384,6 +423,17 @@ static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode, if (err) goto out_cleanup; } + if (!hardlink) { + err = ovl_set_upper_acl(newdentry, XATTR_NAME_POSIX_ACL_ACCESS, + acl); + if (err) + goto out_cleanup; + + err = ovl_set_upper_acl(newdentry, XATTR_NAME_POSIX_ACL_DEFAULT, + default_acl); + if (err) + goto out_cleanup; + } if (!hardlink && S_ISDIR(stat->mode)) { err = ovl_set_opaque(newdentry); @@ -410,6 +460,10 @@ out_dput: out_unlock: unlock_rename(workdir, upperdir); out: + if (!hardlink) { + posix_acl_release(acl); + posix_acl_release(default_acl); + } return err; out_cleanup: -- cgit v0.10.2 From c11b9fdd6a612f376a5e886505f1c54c16d8c380 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:11:59 +0200 Subject: ovl: remove posix_acl_default from workdir Clear out posix acl xattrs on workdir and also reset the mode after creation so that an inherited sgid bit is cleared. Signed-off-by: Miklos Szeredi Cc: diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 4036132..452fb71 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -814,6 +814,10 @@ retry: struct kstat stat = { .mode = S_IFDIR | 0, }; + struct iattr attr = { + .ia_valid = ATTR_MODE, + .ia_mode = stat.mode, + }; if (work->d_inode) { err = -EEXIST; @@ -829,6 +833,21 @@ retry: err = ovl_create_real(dir, work, &stat, NULL, NULL, true); if (err) goto out_dput; + + err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT); + if (err && err != -ENODATA) + goto out_dput; + + err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS); + if (err && err != -ENODATA) + goto out_dput; + + /* Clear any inherited mode bits */ + inode_lock(work->d_inode); + err = notify_change(work, &attr, NULL); + inode_unlock(work->d_inode); + if (err) + goto out_dput; } out_unlock: inode_unlock(dir); -- cgit v0.10.2 From eea2fb4851e9dcbab6b991aaf47e2e024f1f55a0 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:11:59 +0200 Subject: ovl: proper cleanup of workdir When mounting overlayfs it needs a clean "work" directory under the supplied workdir. Previously the mount code removed this directory if it already existed and created a new one. If the removal failed (e.g. directory was not empty) then it fell back to a read-only mount not using the workdir. While this has never been reported, it is possible to get a non-empty "work" dir from a previous mount of overlayfs in case of crash in the middle of an operation using the work directory. In this case the left over state should be discarded and the overlay filesystem will be consistent, guaranteed by the atomicity of operations on moving to/from the workdir to the upper layer. This patch implements cleaning out any files left in workdir. It is implemented using real recursion for simplicity, but the depth is limited to 2, because the worst case is that of a directory containing whiteouts under "work". Signed-off-by: Miklos Szeredi Cc: diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 34839bd..9a95e2c 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -179,6 +179,8 @@ int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list); void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list); void ovl_cache_free(struct list_head *list); int ovl_check_d_type_supported(struct path *realpath); +void ovl_workdir_cleanup(struct inode *dir, struct vfsmount *mnt, + struct dentry *dentry, int level); /* inode.c */ int ovl_setattr(struct dentry *dentry, struct iattr *attr); diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index cf37fc7..f241b4e 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -248,7 +248,7 @@ static inline int ovl_dir_read(struct path *realpath, err = rdd->err; } while (!err && rdd->count); - if (!err && rdd->first_maybe_whiteout) + if (!err && rdd->first_maybe_whiteout && rdd->dentry) err = ovl_check_whiteouts(realpath->dentry, rdd); fput(realfile); @@ -606,3 +606,64 @@ int ovl_check_d_type_supported(struct path *realpath) return rdd.d_type_supported; } + +static void ovl_workdir_cleanup_recurse(struct path *path, int level) +{ + int err; + struct inode *dir = path->dentry->d_inode; + LIST_HEAD(list); + struct ovl_cache_entry *p; + struct ovl_readdir_data rdd = { + .ctx.actor = ovl_fill_merge, + .dentry = NULL, + .list = &list, + .root = RB_ROOT, + .is_lowest = false, + }; + + err = ovl_dir_read(path, &rdd); + if (err) + goto out; + + inode_lock_nested(dir, I_MUTEX_PARENT); + list_for_each_entry(p, &list, l_node) { + struct dentry *dentry; + + if (p->name[0] == '.') { + if (p->len == 1) + continue; + if (p->len == 2 && p->name[1] == '.') + continue; + } + dentry = lookup_one_len(p->name, path->dentry, p->len); + if (IS_ERR(dentry)) + continue; + if (dentry->d_inode) + ovl_workdir_cleanup(dir, path->mnt, dentry, level); + dput(dentry); + } + inode_unlock(dir); +out: + ovl_cache_free(&list); +} + +void ovl_workdir_cleanup(struct inode *dir, struct vfsmount *mnt, + struct dentry *dentry, int level) +{ + int err; + + if (!d_is_dir(dentry) || level > 1) { + ovl_cleanup(dir, dentry); + return; + } + + err = ovl_do_rmdir(dir, dentry); + if (err) { + struct path path = { .mnt = mnt, .dentry = dentry }; + + inode_unlock(dir); + ovl_workdir_cleanup_recurse(&path, level + 1); + inode_lock_nested(dir, I_MUTEX_PARENT); + ovl_cleanup(dir, dentry); + } +} diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 452fb71..219534e 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -825,7 +825,7 @@ retry: goto out_dput; retried = true; - ovl_cleanup(dir, work); + ovl_workdir_cleanup(dir, mnt, work, 0); dput(work); goto retry; } -- cgit v0.10.2 From 5201dc449e4b6b6d7e92f7f974269b11681f98b5 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:11:59 +0200 Subject: ovl: use cached acl on underlying layer Instead of calling ->get_acl() directly, use get_acl() to get the cached value. We will have the acl cached on the underlying inode anyway, because we do permission checking on the both the overlay and the underlying fs. So, since we already have double caching, this improves performance without any cost. Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 024352f..d50d1ea 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "overlayfs.h" static int ovl_copy_up_truncate(struct dentry *dentry) @@ -314,14 +315,14 @@ struct posix_acl *ovl_get_acl(struct inode *inode, int type) const struct cred *old_cred; struct posix_acl *acl; - if (!IS_POSIXACL(realinode)) + if (!IS_ENABLED(CONFIG_FS_POSIX_ACL) || !IS_POSIXACL(realinode)) return NULL; if (!realinode->i_op->get_acl) return NULL; old_cred = ovl_override_creds(inode->i_sb); - acl = realinode->i_op->get_acl(realinode, type); + acl = get_acl(realinode, type); revert_creds(old_cred); return acl; -- cgit v0.10.2 From 2a3a2a3f35249412e35fbb48b743348c40373409 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:11:59 +0200 Subject: ovl: don't cache acl on overlay layer Some operations (setxattr/chmod) can make the cached acl stale. We either need to clear overlay's acl cache for the affected inode or prevent acl caching on the overlay altogether. Preventing caching has the following advantages: - no double caching, less memory used - overlay cache doesn't go stale when fs clears it's own cache Possible disadvantage is performance loss. If that becomes a problem get_acl() can be optimized for overlayfs. This patch disables caching by pre setting i_*acl to a value that - has bit 0 set, so is_uncached_acl() will return true - is not equal to ACL_NOT_CACHED, so get_acl() will not overwrite it The constant -3 was chosen for this purpose. Fixes: 39a25b2b3762 ("ovl: define ->get_acl() for overlay inodes") Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index d50d1ea..47a4f33 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -416,6 +416,9 @@ static void ovl_fill_inode(struct inode *inode, umode_t mode) inode->i_ino = get_next_ino(); inode->i_mode = mode; inode->i_flags |= S_NOCMTIME; +#ifdef CONFIG_FS_POSIX_ACL + inode->i_acl = inode->i_default_acl = ACL_DONT_CACHE; +#endif mode &= S_IFMT; switch (mode) { diff --git a/include/linux/fs.h b/include/linux/fs.h index 3523bf6..901e25d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -574,6 +574,7 @@ static inline void mapping_allow_writable(struct address_space *mapping) struct posix_acl; #define ACL_NOT_CACHED ((void *)(-1)) +#define ACL_DONT_CACHE ((void *)(-3)) static inline struct posix_acl * uncached_acl_sentinel(struct task_struct *task) -- cgit v0.10.2 From fd36570a8805f39b40a0ebde19b08603aa201d17 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 18 Aug 2016 16:58:35 +0100 Subject: ovl: fix spelling mistake: "directries" -> "directories" Trivial fix to spelling mistake in pr_err message. Signed-off-by: Colin Ian King Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 219534e..6aad7d4 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1151,7 +1151,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) err = -EINVAL; stacklen = ovl_split_lowerdirs(lowertmp); if (stacklen > OVL_MAX_STACK) { - pr_err("overlayfs: too many lower directries, limit is %d\n", + pr_err("overlayfs: too many lower directories, limit is %d\n", OVL_MAX_STACK); goto out_free_lowertmp; } else if (!ufs->config.upperdir && stacklen == 1) { -- cgit v0.10.2 From fe2b75952347762a21f67d9df1199137ae5988b2 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 22 Aug 2016 17:59:22 +0200 Subject: ovl: Fix OVL_XATTR_PREFIX Make sure ovl_own_xattr_handler only matches attribute names starting with "overlay.", not "overlayXXX". Signed-off-by: Andreas Gruenbacher Fixes: d837a49bd57f ("ovl: fix POSIX ACL setting") Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 47a4f33..f523511 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -194,9 +194,8 @@ static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz) bool ovl_is_private_xattr(const char *name) { -#define OVL_XATTR_PRE_NAME OVL_XATTR_PREFIX "." - return strncmp(name, OVL_XATTR_PRE_NAME, - sizeof(OVL_XATTR_PRE_NAME) - 1) == 0; + return strncmp(name, OVL_XATTR_PREFIX, + sizeof(OVL_XATTR_PREFIX) - 1) == 0; } int ovl_setxattr(struct dentry *dentry, struct inode *inode, diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 9a95e2c..f50c390 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -24,8 +24,8 @@ enum ovl_path_type { (OVL_TYPE_MERGE(type) || !OVL_TYPE_UPPER(type)) -#define OVL_XATTR_PREFIX XATTR_TRUSTED_PREFIX "overlay" -#define OVL_XATTR_OPAQUE OVL_XATTR_PREFIX ".opaque" +#define OVL_XATTR_PREFIX XATTR_TRUSTED_PREFIX "overlay." +#define OVL_XATTR_OPAQUE OVL_XATTR_PREFIX "opaque" #define OVL_ISUPPER_MASK 1UL -- cgit v0.10.2 From 0c97be22f928b85110504c4bbb8574facb4bd0c0 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 22 Aug 2016 16:36:49 +0200 Subject: ovl: Get rid of ovl_xattr_noacl_handlers array Use an ordinary #ifdef to conditionally include the POSIX ACL handlers in ovl_xattr_handlers, like the other filesystems do. Flag the code that is now only used conditionally with __maybe_unused. Signed-off-by: Andreas Gruenbacher Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 6aad7d4..c356191 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -986,10 +986,11 @@ static unsigned int ovl_split_lowerdirs(char *str) return ctr; } -static int ovl_posix_acl_xattr_set(const struct xattr_handler *handler, - struct dentry *dentry, struct inode *inode, - const char *name, const void *value, - size_t size, int flags) +static int __maybe_unused +ovl_posix_acl_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, + size_t size, int flags) { struct dentry *workdir = ovl_workdir(dentry); struct inode *realinode = ovl_inode_real(inode, NULL); @@ -1040,13 +1041,15 @@ static int ovl_own_xattr_set(const struct xattr_handler *handler, return -EPERM; } -static const struct xattr_handler ovl_posix_acl_access_xattr_handler = { +static const struct xattr_handler __maybe_unused +ovl_posix_acl_access_xattr_handler = { .name = XATTR_NAME_POSIX_ACL_ACCESS, .flags = ACL_TYPE_ACCESS, .set = ovl_posix_acl_xattr_set, }; -static const struct xattr_handler ovl_posix_acl_default_xattr_handler = { +static const struct xattr_handler __maybe_unused +ovl_posix_acl_default_xattr_handler = { .name = XATTR_NAME_POSIX_ACL_DEFAULT, .flags = ACL_TYPE_DEFAULT, .set = ovl_posix_acl_xattr_set, @@ -1063,19 +1066,15 @@ static const struct xattr_handler ovl_other_xattr_handler = { }; static const struct xattr_handler *ovl_xattr_handlers[] = { +#ifdef CONFIG_FS_POSIX_ACL &ovl_posix_acl_access_xattr_handler, &ovl_posix_acl_default_xattr_handler, +#endif &ovl_own_xattr_handler, &ovl_other_xattr_handler, NULL }; -static const struct xattr_handler *ovl_xattr_noacl_handlers[] = { - &ovl_own_xattr_handler, - &ovl_other_xattr_handler, - NULL, -}; - static int ovl_fill_super(struct super_block *sb, void *data, int silent) { struct path upperpath = { NULL, NULL }; @@ -1288,10 +1287,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) sb->s_magic = OVERLAYFS_SUPER_MAGIC; sb->s_op = &ovl_super_operations; - if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) - sb->s_xattr = ovl_xattr_handlers; - else - sb->s_xattr = ovl_xattr_noacl_handlers; + sb->s_xattr = ovl_xattr_handlers; sb->s_root = root_dentry; sb->s_fs_info = ufs; sb->s_flags |= MS_POSIXACL; -- cgit v0.10.2 From 0e585ccc13b3edbb187fb4f1b7cc9397f17d64a9 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 22 Aug 2016 17:22:11 +0200 Subject: ovl: Switch to generic_removexattr Commit d837a49bd57f ("ovl: fix POSIX ACL setting") switches from iop->setxattr from ovl_setxattr to generic_setxattr, so switch from ovl_removexattr to generic_removexattr as well. As far as permission checking goes, the same rules should apply in either case. While doing that, rename ovl_setxattr to ovl_xattr_set to indicate that this is not an iop->setxattr implementation and remove the unused inode argument. Move ovl_other_xattr_set above ovl_own_xattr_set so that they match the order of handlers in ovl_xattr_handlers. Signed-off-by: Andreas Gruenbacher Fixes: d837a49bd57f ("ovl: fix POSIX ACL setting") Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index f485dd4..791c6a2 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -1006,7 +1006,7 @@ const struct inode_operations ovl_dir_inode_operations = { .setxattr = generic_setxattr, .getxattr = ovl_getxattr, .listxattr = ovl_listxattr, - .removexattr = ovl_removexattr, + .removexattr = generic_removexattr, .get_acl = ovl_get_acl, .update_time = ovl_update_time, }; diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index f523511..94bca71 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -198,25 +198,38 @@ bool ovl_is_private_xattr(const char *name) sizeof(OVL_XATTR_PREFIX) - 1) == 0; } -int ovl_setxattr(struct dentry *dentry, struct inode *inode, - const char *name, const void *value, - size_t size, int flags) +int ovl_xattr_set(struct dentry *dentry, const char *name, const void *value, + size_t size, int flags) { int err; - struct dentry *upperdentry; + struct path realpath; + enum ovl_path_type type = ovl_path_real(dentry, &realpath); const struct cred *old_cred; err = ovl_want_write(dentry); if (err) goto out; + if (!value && !OVL_TYPE_UPPER(type)) { + err = vfs_getxattr(realpath.dentry, name, NULL, 0); + if (err < 0) + goto out_drop_write; + } + err = ovl_copy_up(dentry); if (err) goto out_drop_write; - upperdentry = ovl_dentry_upper(dentry); + if (!OVL_TYPE_UPPER(type)) + ovl_path_upper(dentry, &realpath); + old_cred = ovl_override_creds(dentry->d_sb); - err = vfs_setxattr(upperdentry, name, value, size, flags); + if (value) + err = vfs_setxattr(realpath.dentry, name, value, size, flags); + else { + WARN_ON(flags != XATTR_REPLACE); + err = vfs_removexattr(realpath.dentry, name); + } revert_creds(old_cred); out_drop_write: @@ -272,42 +285,6 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) return res; } -int ovl_removexattr(struct dentry *dentry, const char *name) -{ - int err; - struct path realpath; - enum ovl_path_type type = ovl_path_real(dentry, &realpath); - const struct cred *old_cred; - - err = ovl_want_write(dentry); - if (err) - goto out; - - err = -ENODATA; - if (ovl_is_private_xattr(name)) - goto out_drop_write; - - if (!OVL_TYPE_UPPER(type)) { - err = vfs_getxattr(realpath.dentry, name, NULL, 0); - if (err < 0) - goto out_drop_write; - - err = ovl_copy_up(dentry); - if (err) - goto out_drop_write; - - ovl_path_upper(dentry, &realpath); - } - - old_cred = ovl_override_creds(dentry->d_sb); - err = vfs_removexattr(realpath.dentry, name); - revert_creds(old_cred); -out_drop_write: - ovl_drop_write(dentry); -out: - return err; -} - struct posix_acl *ovl_get_acl(struct inode *inode, int type) { struct inode *realinode = ovl_inode_real(inode, NULL); @@ -393,7 +370,7 @@ static const struct inode_operations ovl_file_inode_operations = { .setxattr = generic_setxattr, .getxattr = ovl_getxattr, .listxattr = ovl_listxattr, - .removexattr = ovl_removexattr, + .removexattr = generic_removexattr, .get_acl = ovl_get_acl, .update_time = ovl_update_time, }; @@ -406,7 +383,7 @@ static const struct inode_operations ovl_symlink_inode_operations = { .setxattr = generic_setxattr, .getxattr = ovl_getxattr, .listxattr = ovl_listxattr, - .removexattr = ovl_removexattr, + .removexattr = generic_removexattr, .update_time = ovl_update_time, }; diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index f50c390..5769aaf 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -185,13 +185,11 @@ void ovl_workdir_cleanup(struct inode *dir, struct vfsmount *mnt, /* inode.c */ int ovl_setattr(struct dentry *dentry, struct iattr *attr); int ovl_permission(struct inode *inode, int mask); -int ovl_setxattr(struct dentry *dentry, struct inode *inode, - const char *name, const void *value, - size_t size, int flags); +int ovl_xattr_set(struct dentry *dentry, const char *name, const void *value, + size_t size, int flags); ssize_t ovl_getxattr(struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size); ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size); -int ovl_removexattr(struct dentry *dentry, const char *name); struct posix_acl *ovl_get_acl(struct inode *inode, int type); int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags); int ovl_update_time(struct inode *inode, struct timespec *ts, int flags); diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index c356191..45a2eb0 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1018,21 +1018,13 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler, posix_acl_release(acl); - return ovl_setxattr(dentry, inode, handler->name, value, size, flags); + return ovl_xattr_set(dentry, handler->name, value, size, flags); out_acl_release: posix_acl_release(acl); return err; } -static int ovl_other_xattr_set(const struct xattr_handler *handler, - struct dentry *dentry, struct inode *inode, - const char *name, const void *value, - size_t size, int flags) -{ - return ovl_setxattr(dentry, inode, name, value, size, flags); -} - static int ovl_own_xattr_set(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, const void *value, @@ -1041,6 +1033,14 @@ static int ovl_own_xattr_set(const struct xattr_handler *handler, return -EPERM; } +static int ovl_other_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, + size_t size, int flags) +{ + return ovl_xattr_set(dentry, name, value, size, flags); +} + static const struct xattr_handler __maybe_unused ovl_posix_acl_access_xattr_handler = { .name = XATTR_NAME_POSIX_ACL_ACCESS, -- cgit v0.10.2 From ce31513a9114f74fe3e9caa6534d201bdac7238d Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:12:00 +0200 Subject: ovl: copyattr after setting POSIX ACL Setting POSIX acl may also modify the file mode, so need to copy that up to the overlay inode. Reported-by: Eryu Guan Fixes: d837a49bd57f ("ovl: fix POSIX ACL setting") Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 45a2eb0..cba2c9f 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1018,7 +1018,11 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler, posix_acl_release(acl); - return ovl_xattr_set(dentry, handler->name, value, size, flags); + err = ovl_xattr_set(dentry, handler->name, value, size, flags); + if (!err) + ovl_copyattr(ovl_inode_real(inode, NULL), inode); + + return err; out_acl_release: posix_acl_release(acl); -- cgit v0.10.2 From 0eb45fc3bb7a2cf9c9c93d9e95986a841e5f4625 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 22 Aug 2016 17:52:55 +0200 Subject: ovl: Switch to generic_getxattr Now that overlayfs has xattr handlers for iop->{set,remove}xattr, use those same handlers for iop->getxattr as well. Signed-off-by: Andreas Gruenbacher Signed-off-by: Miklos Szeredi diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 791c6a2..1560fdc 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -1004,7 +1004,7 @@ const struct inode_operations ovl_dir_inode_operations = { .permission = ovl_permission, .getattr = ovl_dir_getattr, .setxattr = generic_setxattr, - .getxattr = ovl_getxattr, + .getxattr = generic_getxattr, .listxattr = ovl_listxattr, .removexattr = generic_removexattr, .get_acl = ovl_get_acl, diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 94bca71..1878591 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -238,16 +238,13 @@ out: return err; } -ssize_t ovl_getxattr(struct dentry *dentry, struct inode *inode, - const char *name, void *value, size_t size) +int ovl_xattr_get(struct dentry *dentry, const char *name, + void *value, size_t size) { struct dentry *realdentry = ovl_dentry_real(dentry); ssize_t res; const struct cred *old_cred; - if (ovl_is_private_xattr(name)) - return -ENODATA; - old_cred = ovl_override_creds(dentry->d_sb); res = vfs_getxattr(realdentry, name, value, size); revert_creds(old_cred); @@ -368,7 +365,7 @@ static const struct inode_operations ovl_file_inode_operations = { .permission = ovl_permission, .getattr = ovl_getattr, .setxattr = generic_setxattr, - .getxattr = ovl_getxattr, + .getxattr = generic_getxattr, .listxattr = ovl_listxattr, .removexattr = generic_removexattr, .get_acl = ovl_get_acl, @@ -381,7 +378,7 @@ static const struct inode_operations ovl_symlink_inode_operations = { .readlink = ovl_readlink, .getattr = ovl_getattr, .setxattr = generic_setxattr, - .getxattr = ovl_getxattr, + .getxattr = generic_getxattr, .listxattr = ovl_listxattr, .removexattr = generic_removexattr, .update_time = ovl_update_time, diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 5769aaf..5813ccf 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -187,8 +187,8 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr); int ovl_permission(struct inode *inode, int mask); int ovl_xattr_set(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); -ssize_t ovl_getxattr(struct dentry *dentry, struct inode *inode, - const char *name, void *value, size_t size); +int ovl_xattr_get(struct dentry *dentry, const char *name, + void *value, size_t size); ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size); struct posix_acl *ovl_get_acl(struct inode *inode, int type); int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags); diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index cba2c9f..a4585f9 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -987,6 +987,14 @@ static unsigned int ovl_split_lowerdirs(char *str) } static int __maybe_unused +ovl_posix_acl_xattr_get(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + return ovl_xattr_get(dentry, handler->name, buffer, size); +} + +static int __maybe_unused ovl_posix_acl_xattr_set(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, const void *value, @@ -1029,6 +1037,13 @@ out_acl_release: return err; } +static int ovl_own_xattr_get(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + return -EPERM; +} + static int ovl_own_xattr_set(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, const void *value, @@ -1037,6 +1052,13 @@ static int ovl_own_xattr_set(const struct xattr_handler *handler, return -EPERM; } +static int ovl_other_xattr_get(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + return ovl_xattr_get(dentry, name, buffer, size); +} + static int ovl_other_xattr_set(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, const void *value, @@ -1049,6 +1071,7 @@ static const struct xattr_handler __maybe_unused ovl_posix_acl_access_xattr_handler = { .name = XATTR_NAME_POSIX_ACL_ACCESS, .flags = ACL_TYPE_ACCESS, + .get = ovl_posix_acl_xattr_get, .set = ovl_posix_acl_xattr_set, }; @@ -1056,16 +1079,19 @@ static const struct xattr_handler __maybe_unused ovl_posix_acl_default_xattr_handler = { .name = XATTR_NAME_POSIX_ACL_DEFAULT, .flags = ACL_TYPE_DEFAULT, + .get = ovl_posix_acl_xattr_get, .set = ovl_posix_acl_xattr_set, }; static const struct xattr_handler ovl_own_xattr_handler = { .prefix = OVL_XATTR_PREFIX, + .get = ovl_own_xattr_get, .set = ovl_own_xattr_set, }; static const struct xattr_handler ovl_other_xattr_handler = { .prefix = "", /* catch all */ + .get = ovl_other_xattr_get, .set = ovl_other_xattr_set, }; -- cgit v0.10.2 From 7cb35119d067191ce9ebc380a599db0b03cbd9d9 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:12:00 +0200 Subject: ovl: listxattr: use strnlen() Be defensive about what underlying fs provides us in the returned xattr list buffer. If it's not properly null terminated, bail out with a warning insead of BUG. Signed-off-by: Miklos Szeredi Cc: diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 1878591..c75625c 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -255,7 +255,8 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) { struct dentry *realdentry = ovl_dentry_real(dentry); ssize_t res; - int off; + size_t len; + char *s; const struct cred *old_cred; old_cred = ovl_override_creds(dentry->d_sb); @@ -265,17 +266,19 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) return res; /* filter out private xattrs */ - for (off = 0; off < res;) { - char *s = list + off; - size_t slen = strlen(s) + 1; + for (s = list, len = res; len;) { + size_t slen = strnlen(s, len) + 1; - BUG_ON(off + slen > res); + /* underlying fs providing us with an broken xattr list? */ + if (WARN_ON(slen > len)) + return -EIO; + len -= slen; if (ovl_is_private_xattr(s)) { res -= slen; - memmove(s, s + slen, res - off); + memmove(s, s + slen, len); } else { - off += slen; + s += slen; } } -- cgit v0.10.2 From 026e5e0cc12474495515275d9c176ef823238c70 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 1 Sep 2016 11:12:00 +0200 Subject: ovl: update doc Some of the documented quirks no longer apply. Signed-off-by: Miklos Szeredi diff --git a/Documentation/filesystems/overlayfs.txt b/Documentation/filesystems/overlayfs.txt index d6259c7..bcbf971 100644 --- a/Documentation/filesystems/overlayfs.txt +++ b/Documentation/filesystems/overlayfs.txt @@ -183,12 +183,10 @@ The copy_up operation essentially creates a new, identical file and moves it over to the old name. The new file may be on a different filesystem, so both st_dev and st_ino of the file may change. -Any open files referring to this inode will access the old data and -metadata. Similarly any file locks obtained before copy_up will not -apply to the copied up file. +Any open files referring to this inode will access the old data. -On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and -fsetxattr(2) will fail with EROFS. +Any file locks (and leases) obtained before copy_up will not apply +to the copied up file. If a file with multiple hard links is copied up, then this will "break" the link. Changes will not be propagated to other names -- cgit v0.10.2 From 6af7e4f77259ee946103387372cb159f2e99a6d4 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 1 Sep 2016 08:52:29 -0500 Subject: PCI: Mark Haswell Power Control Unit as having non-compliant BARs The Haswell Power Control Unit has a non-PCI register (CONFIG_TDP_NOMINAL) where BAR 0 is supposed to be. This is erratum HSE43 in the spec update referenced below: The PCIe* Base Specification indicates that Configuration Space Headers have a base address register at offset 0x10. Due to this erratum, the Power Control Unit's CONFIG_TDP_NOMINAL CSR (Bus 1; Device 30; Function 3; Offset 0x10) is located where a base register is expected. Mark the PCU as having non-compliant BARs so we don't try to probe any of them. There are no other BARs on this device. Rename the quirk so it's not Broadwell-specific. Link: http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v3-spec-update.html Link: http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v3-datasheet-vol-2.html (section 5.4, Device 30 Function 3) Link: https://bugzilla.kernel.org/show_bug.cgi?id=153881 Reported-by: Paul Menzel Tested-by: Prarit Bhargava Signed-off-by: Bjorn Helgaas Acked-by: Myron Stowe diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index 837ea36..6d52b94 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -553,15 +553,21 @@ static void twinhead_reserve_killing_zone(struct pci_dev *dev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x27B9, twinhead_reserve_killing_zone); /* - * Broadwell EP Home Agent BARs erroneously return non-zero values when read. + * Device [8086:2fc0] + * Erratum HSE43 + * CONFIG_TDP_NOMINAL CSR Implemented at Incorrect Offset + * http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v3-spec-update.html * - * See http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v4-spec-update.html - * entry BDF2. + * Devices [8086:6f60,6fa0,6fc0] + * Erratum BDF2 + * PCI BARs in the Home Agent Will Return Non-Zero Values During Enumeration + * http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v4-spec-update.html */ -static void pci_bdwep_bar(struct pci_dev *dev) +static void pci_invalid_bar(struct pci_dev *dev) { dev->non_compliant_bars = 1; } -DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6f60, pci_bdwep_bar); -DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fa0, pci_bdwep_bar); -DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, pci_bdwep_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2fc0, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6f60, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fa0, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, pci_invalid_bar); -- cgit v0.10.2 From 3dc09ec895f098cedd789a620c90ff1bf7f779a1 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Wed, 24 Aug 2016 11:57:52 -0400 Subject: Btrfs: kill invalid ASSERT() in process_all_refs() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Suppose you have the following tree in snap1 on a file system mounted with -o inode_cache so that inode numbers are recycled └── [ 258] a └── [ 257] b and then you remove b, rename a to c, and then re-create b in c so you have the following tree └── [ 258] c └── [ 257] b and then you try to do an incremental send you will hit ASSERT(pending_move == 0); in process_all_refs(). This is because we assume that any recycling of inodes will not have a pending change in our path, which isn't the case. This is the case for the DELETE side, since we want to remove the old file using the old path, but on the create side we could have a pending move and need to do the normal pending rename dance. So remove this ASSERT() and put a comment about why we ignore pending_move. Thanks, Signed-off-by: Josef Bacik Signed-off-by: David Sterba diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index efe129f..a87675f 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -4268,10 +4268,12 @@ static int process_all_refs(struct send_ctx *sctx, } btrfs_release_path(path); + /* + * We don't actually care about pending_move as we are simply + * re-creating this inode and will be rename'ing it into place once we + * rename the parent directory. + */ ret = process_recorded_refs(sctx, &pending_move); - /* Only applicable to an incremental send. */ - ASSERT(pending_move == 0); - out: btrfs_free_path(path); return ret; -- cgit v0.10.2 From a9b1fc851db054ddec703dc7951ed00620600b26 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Wed, 31 Aug 2016 16:43:33 -0700 Subject: Btrfs: fix endless loop in balancing block groups Qgroup function may overwrite the saved error 'err' with 0 in case quota is not enabled, and this ends up with a endless loop in balance because we keep going back to balance the same block group. It really should use 'ret' instead. Signed-off-by: Liu Bo Reviewed-by: Qu Wenruo Signed-off-by: David Sterba diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 8a2c2a0..c0c13dc 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4200,9 +4200,11 @@ restart: err = PTR_ERR(trans); goto out_free; } - err = qgroup_fix_relocated_data_extents(trans, rc); - if (err < 0) { - btrfs_abort_transaction(trans, err); + ret = qgroup_fix_relocated_data_extents(trans, rc); + if (ret < 0) { + btrfs_abort_transaction(trans, ret); + if (!err) + err = ret; goto out_free; } btrfs_commit_transaction(trans, rc->extent_root); -- cgit v0.10.2 From e0af24849efb0eea572cf22d22bb65d164cb8a6f Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Wed, 31 Aug 2016 19:46:16 +0800 Subject: btrfs: fix one bug that process may endlessly wait for ticket in wait_reserve_ticket() If can_overcommit() in btrfs_calc_reclaim_metadata_size() returns true, btrfs_async_reclaim_metadata_space() will not reclaim metadata space, just return directly and also forget to wake up process which are waiting for their tickets, so these processes will wait endlessly. Fstests case generic/172 with mount option "-o compress=lzo" have revealed this bug in my test machine. Here if we have tickets to handle, we must handle them first. Signed-off-by: Wang Xiaoguang Reviewed-by: Josef Bacik Signed-off-by: David Sterba diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 60d4ae7..64676a1 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4901,11 +4901,6 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root, u64 expected; u64 to_reclaim = 0; - to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M); - if (can_overcommit(root, space_info, to_reclaim, - BTRFS_RESERVE_FLUSH_ALL)) - return 0; - list_for_each_entry(ticket, &space_info->tickets, list) to_reclaim += ticket->bytes; list_for_each_entry(ticket, &space_info->priority_tickets, list) @@ -4913,6 +4908,11 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root, if (to_reclaim) return to_reclaim; + to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M); + if (can_overcommit(root, space_info, to_reclaim, + BTRFS_RESERVE_FLUSH_ALL)) + return 0; + used = space_info->bytes_used + space_info->bytes_reserved + space_info->bytes_pinned + space_info->bytes_readonly + space_info->bytes_may_use; -- cgit v0.10.2 From 5b004412e2b7894105ea6043d380b7ab21f244ef Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 1 Sep 2016 10:37:40 +0200 Subject: mlxsw: spectrum_router: Fix failure caused by double fib removal from HW In mlxsw we squash tables 254 and 255 together into HW. Kernel adds/dels /32 ip to/from both 254 and 255. On del path, that causes the same prefix being removed twice. Fix this by introducing reference counting for private mlxsw fib entries. That required a bit of code reshuffle. Also put dev into fib entry key so the same prefix could be represented once per every router interface. Fixes: 61c503f976b5 ("mlxsw: spectrum_router: Implement fib4 add/del switchdev obj ops") Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 917ddd1..ed61814 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -107,6 +107,7 @@ mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, } struct mlxsw_sp_fib_key { + struct net_device *dev; unsigned char addr[sizeof(struct in6_addr)]; unsigned char prefix_len; }; @@ -123,6 +124,7 @@ struct mlxsw_sp_fib_entry { struct rhash_head ht_node; struct mlxsw_sp_fib_key key; enum mlxsw_sp_fib_entry_type type; + unsigned int ref_count; u8 added:1; u16 rif; /* used for action local */ struct mlxsw_sp_vr *vr; @@ -171,13 +173,15 @@ static void mlxsw_sp_fib_entry_remove(struct mlxsw_sp_fib *fib, static struct mlxsw_sp_fib_entry * mlxsw_sp_fib_entry_create(struct mlxsw_sp_fib *fib, const void *addr, - size_t addr_len, unsigned char prefix_len) + size_t addr_len, unsigned char prefix_len, + struct net_device *dev) { struct mlxsw_sp_fib_entry *fib_entry; fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL); if (!fib_entry) return NULL; + fib_entry->key.dev = dev; memcpy(fib_entry->key.addr, addr, addr_len); fib_entry->key.prefix_len = prefix_len; return fib_entry; @@ -190,10 +194,13 @@ static void mlxsw_sp_fib_entry_destroy(struct mlxsw_sp_fib_entry *fib_entry) static struct mlxsw_sp_fib_entry * mlxsw_sp_fib_entry_lookup(struct mlxsw_sp_fib *fib, const void *addr, - size_t addr_len, unsigned char prefix_len) + size_t addr_len, unsigned char prefix_len, + struct net_device *dev) { - struct mlxsw_sp_fib_key key = {{ 0 } }; + struct mlxsw_sp_fib_key key; + memset(&key, 0, sizeof(key)); + key.dev = dev; memcpy(key.addr, addr, addr_len); key.prefix_len = prefix_len; return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); @@ -1695,34 +1702,93 @@ mlxsw_sp_router_fib4_entry_fini(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry); } -static int -mlxsw_sp_router_fib4_add_prepare(struct mlxsw_sp_port *mlxsw_sp_port, - const struct switchdev_obj_ipv4_fib *fib4, - struct switchdev_trans *trans) +static struct mlxsw_sp_fib_entry * +mlxsw_sp_fib_entry_get(struct mlxsw_sp *mlxsw_sp, + const struct switchdev_obj_ipv4_fib *fib4) { - struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; - struct mlxsw_sp_router_fib4_add_info *info; struct mlxsw_sp_fib_entry *fib_entry; + struct fib_info *fi = fib4->fi; struct mlxsw_sp_vr *vr; int err; vr = mlxsw_sp_vr_get(mlxsw_sp, fib4->dst_len, fib4->tb_id, MLXSW_SP_L3_PROTO_IPV4); if (IS_ERR(vr)) - return PTR_ERR(vr); + return ERR_CAST(vr); + fib_entry = mlxsw_sp_fib_entry_lookup(vr->fib, &fib4->dst, + sizeof(fib4->dst), + fib4->dst_len, fi->fib_dev); + if (fib_entry) { + /* Already exists, just take a reference */ + fib_entry->ref_count++; + return fib_entry; + } fib_entry = mlxsw_sp_fib_entry_create(vr->fib, &fib4->dst, - sizeof(fib4->dst), fib4->dst_len); + sizeof(fib4->dst), + fib4->dst_len, fi->fib_dev); if (!fib_entry) { err = -ENOMEM; goto err_fib_entry_create; } fib_entry->vr = vr; + fib_entry->ref_count = 1; err = mlxsw_sp_router_fib4_entry_init(mlxsw_sp, fib4, fib_entry); if (err) goto err_fib4_entry_init; + return fib_entry; + +err_fib4_entry_init: + mlxsw_sp_fib_entry_destroy(fib_entry); +err_fib_entry_create: + mlxsw_sp_vr_put(mlxsw_sp, vr); + + return ERR_PTR(err); +} + +static struct mlxsw_sp_fib_entry * +mlxsw_sp_fib_entry_find(struct mlxsw_sp *mlxsw_sp, + const struct switchdev_obj_ipv4_fib *fib4) +{ + struct mlxsw_sp_vr *vr; + + vr = mlxsw_sp_vr_find(mlxsw_sp, fib4->tb_id, MLXSW_SP_L3_PROTO_IPV4); + if (!vr) + return NULL; + + return mlxsw_sp_fib_entry_lookup(vr->fib, &fib4->dst, + sizeof(fib4->dst), fib4->dst_len, + fib4->fi->fib_dev); +} + +void mlxsw_sp_fib_entry_put(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_fib_entry *fib_entry) +{ + struct mlxsw_sp_vr *vr = fib_entry->vr; + + if (--fib_entry->ref_count == 0) { + mlxsw_sp_router_fib4_entry_fini(mlxsw_sp, fib_entry); + mlxsw_sp_fib_entry_destroy(fib_entry); + } + mlxsw_sp_vr_put(mlxsw_sp, vr); +} + +static int +mlxsw_sp_router_fib4_add_prepare(struct mlxsw_sp_port *mlxsw_sp_port, + const struct switchdev_obj_ipv4_fib *fib4, + struct switchdev_trans *trans) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + struct mlxsw_sp_router_fib4_add_info *info; + struct mlxsw_sp_fib_entry *fib_entry; + int err; + + fib_entry = mlxsw_sp_fib_entry_get(mlxsw_sp, fib4); + if (IS_ERR(fib_entry)) + return PTR_ERR(fib_entry); + info = kmalloc(sizeof(*info), GFP_KERNEL); if (!info) { err = -ENOMEM; @@ -1736,11 +1802,7 @@ mlxsw_sp_router_fib4_add_prepare(struct mlxsw_sp_port *mlxsw_sp_port, return 0; err_alloc_info: - mlxsw_sp_router_fib4_entry_fini(mlxsw_sp, fib_entry); -err_fib4_entry_init: - mlxsw_sp_fib_entry_destroy(fib_entry); -err_fib_entry_create: - mlxsw_sp_vr_put(mlxsw_sp, vr); + mlxsw_sp_fib_entry_put(mlxsw_sp, fib_entry); return err; } @@ -1759,11 +1821,14 @@ mlxsw_sp_router_fib4_add_commit(struct mlxsw_sp_port *mlxsw_sp_port, fib_entry = info->fib_entry; kfree(info); + if (fib_entry->ref_count != 1) + return 0; + vr = fib_entry->vr; - err = mlxsw_sp_fib_entry_insert(fib_entry->vr->fib, fib_entry); + err = mlxsw_sp_fib_entry_insert(vr->fib, fib_entry); if (err) goto err_fib_entry_insert; - err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); + err = mlxsw_sp_fib_entry_update(mlxsw_sp_port->mlxsw_sp, fib_entry); if (err) goto err_fib_entry_add; return 0; @@ -1771,9 +1836,7 @@ mlxsw_sp_router_fib4_add_commit(struct mlxsw_sp_port *mlxsw_sp_port, err_fib_entry_add: mlxsw_sp_fib_entry_remove(vr->fib, fib_entry); err_fib_entry_insert: - mlxsw_sp_router_fib4_entry_fini(mlxsw_sp, fib_entry); - mlxsw_sp_fib_entry_destroy(fib_entry); - mlxsw_sp_vr_put(mlxsw_sp, vr); + mlxsw_sp_fib_entry_put(mlxsw_sp, fib_entry); return err; } @@ -1793,23 +1856,18 @@ int mlxsw_sp_router_fib4_del(struct mlxsw_sp_port *mlxsw_sp_port, { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; struct mlxsw_sp_fib_entry *fib_entry; - struct mlxsw_sp_vr *vr; - vr = mlxsw_sp_vr_find(mlxsw_sp, fib4->tb_id, MLXSW_SP_L3_PROTO_IPV4); - if (!vr) { - dev_warn(mlxsw_sp->bus_info->dev, "Failed to find virtual router for FIB4 entry being removed.\n"); - return -ENOENT; - } - fib_entry = mlxsw_sp_fib_entry_lookup(vr->fib, &fib4->dst, - sizeof(fib4->dst), fib4->dst_len); + fib_entry = mlxsw_sp_fib_entry_find(mlxsw_sp, fib4); if (!fib_entry) { dev_warn(mlxsw_sp->bus_info->dev, "Failed to find FIB4 entry being removed.\n"); return -ENOENT; } - mlxsw_sp_fib_entry_del(mlxsw_sp_port->mlxsw_sp, fib_entry); - mlxsw_sp_fib_entry_remove(vr->fib, fib_entry); - mlxsw_sp_router_fib4_entry_fini(mlxsw_sp, fib_entry); - mlxsw_sp_fib_entry_destroy(fib_entry); - mlxsw_sp_vr_put(mlxsw_sp, vr); + + if (fib_entry->ref_count == 1) { + mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); + mlxsw_sp_fib_entry_remove(fib_entry->vr->fib, fib_entry); + } + + mlxsw_sp_fib_entry_put(mlxsw_sp, fib_entry); return 0; } -- cgit v0.10.2 From 7146da31817aa21b19d7a01e95b94686c3f4bd97 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 1 Sep 2016 10:37:41 +0200 Subject: mlxsw: spectrum_router: Fix fib entry update path Originally, I expected that there would be needed to call update operation in case RALUE record action is changed. However, that is not needed since write operation takes care of that nicely. Remove prepared construct and always call the write operation. Fixes: 61c503f976b5 ("mlxsw: spectrum_router: Implement fib4 add/del switchdev obj ops") Signed-off-by: Jiri Pirko Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index ed61814..49f4e06 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -125,7 +125,6 @@ struct mlxsw_sp_fib_entry { struct mlxsw_sp_fib_key key; enum mlxsw_sp_fib_entry_type type; unsigned int ref_count; - u8 added:1; u16 rif; /* used for action local */ struct mlxsw_sp_vr *vr; struct list_head nexthop_group_node; @@ -1633,11 +1632,8 @@ static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib_entry *fib_entry) { - enum mlxsw_reg_ralue_op op; - - op = !fib_entry->added ? MLXSW_REG_RALUE_OP_WRITE_WRITE : - MLXSW_REG_RALUE_OP_WRITE_UPDATE; - return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, op); + return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, + MLXSW_REG_RALUE_OP_WRITE_WRITE); } static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, -- cgit v0.10.2 From de7d62952b01755f9885bbe945b141d9d4338e55 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 1 Sep 2016 10:37:42 +0200 Subject: mlxsw: spectrum: Fix error path in mlxsw_sp_module_init Add forgotten notifier unregister. Fixes: 99724c18fc66 ("mlxsw: spectrum: Introduce support for router interfaces") Signed-off-by: Jiri Pirko Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 7291f2c..ec1f7d8 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -4553,6 +4553,7 @@ static int __init mlxsw_sp_module_init(void) return 0; err_core_driver_register: + unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb); unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb); return err; } -- cgit v0.10.2 From e73226384948e9b35823150cadd9a3ea4ca9fc97 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 1 Sep 2016 10:37:43 +0200 Subject: mlxsw: spectrum_router: Fix netevent notifier registration Currently the notifier is registered for every asic instance, however the same block. Fix this by moving the registration to module init. Fixes: c723c735fa6b ("mlxsw: spectrum_router: Periodically update the kernel's neigh table") Signed-off-by: Jiri Pirko Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index ec1f7d8..e16b347 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -56,6 +56,7 @@ #include #include #include +#include #include "spectrum.h" #include "core.h" @@ -4541,18 +4542,25 @@ static struct notifier_block mlxsw_sp_inetaddr_nb __read_mostly = { .priority = 10, /* Must be called before FIB notifier block */ }; +static struct notifier_block mlxsw_sp_router_netevent_nb __read_mostly = { + .notifier_call = mlxsw_sp_router_netevent_event, +}; + static int __init mlxsw_sp_module_init(void) { int err; register_netdevice_notifier(&mlxsw_sp_netdevice_nb); register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb); + register_netevent_notifier(&mlxsw_sp_router_netevent_nb); + err = mlxsw_core_driver_register(&mlxsw_sp_driver); if (err) goto err_core_driver_register; return 0; err_core_driver_register: + unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb); unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb); unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb); return err; @@ -4561,6 +4569,7 @@ err_core_driver_register: static void __exit mlxsw_sp_module_exit(void) { mlxsw_core_driver_unregister(&mlxsw_sp_driver); + unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb); unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb); unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb); } diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index ab3feb8..ac48abe 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -587,6 +587,8 @@ int mlxsw_sp_router_neigh_construct(struct net_device *dev, struct neighbour *n); void mlxsw_sp_router_neigh_destroy(struct net_device *dev, struct neighbour *n); +int mlxsw_sp_router_netevent_event(struct notifier_block *unused, + unsigned long event, void *ptr); int mlxsw_sp_kvdl_alloc(struct mlxsw_sp *mlxsw_sp, unsigned int entry_count); void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp, int entry_index); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 49f4e06..352259b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -944,8 +944,8 @@ static void mlxsw_sp_router_neigh_update_hw(struct work_struct *work) mlxsw_sp_port_dev_put(mlxsw_sp_port); } -static int mlxsw_sp_router_netevent_event(struct notifier_block *unused, - unsigned long event, void *ptr) +int mlxsw_sp_router_netevent_event(struct notifier_block *unused, + unsigned long event, void *ptr) { struct mlxsw_sp_neigh_entry *neigh_entry; struct mlxsw_sp_port *mlxsw_sp_port; @@ -1015,10 +1015,6 @@ static int mlxsw_sp_router_netevent_event(struct notifier_block *unused, return NOTIFY_DONE; } -static struct notifier_block mlxsw_sp_router_netevent_nb __read_mostly = { - .notifier_call = mlxsw_sp_router_netevent_event, -}; - static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) { int err; @@ -1033,10 +1029,6 @@ static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) */ mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); - err = register_netevent_notifier(&mlxsw_sp_router_netevent_nb); - if (err) - goto err_register_netevent_notifier; - /* Create the delayed works for the activity_update */ INIT_DELAYED_WORK(&mlxsw_sp->router.neighs_update.dw, mlxsw_sp_router_neighs_update_work); @@ -1045,17 +1037,12 @@ static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, 0); mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, 0); return 0; - -err_register_netevent_notifier: - rhashtable_destroy(&mlxsw_sp->router.neigh_ht); - return err; } static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) { cancel_delayed_work_sync(&mlxsw_sp->router.neighs_update.dw); cancel_delayed_work_sync(&mlxsw_sp->router.nexthop_probe_dw); - unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb); rhashtable_destroy(&mlxsw_sp->router.neigh_ht); } -- cgit v0.10.2 From f1de7a28d53cfde8fa290d6c535eb690a4e1b5d5 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Thu, 1 Sep 2016 10:37:44 +0200 Subject: mlxsw: spectrum: Don't take multiple references on a FID In commit 14d39461b3f4 ("mlxsw: spectrum: Use per-FID struct for the VLAN-aware bridge") I added a per-FID struct, which member ports can take a reference on upon VLAN membership configuration. However, sometimes only the VLAN flags (e.g. egress untagged) are toggled without changing the VLAN membership. In these cases we shouldn't take another reference on the FID. Fixes: 14d39461b3f4 ("mlxsw: spectrum: Use per-FID struct for the VLAN-aware bridge") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index d1b59cd..e0d95c4 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -460,6 +460,9 @@ static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port, { struct mlxsw_sp_fid *f; + if (test_bit(fid, mlxsw_sp_port->active_vlans)) + return 0; + f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid); if (!f) { f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid); -- cgit v0.10.2 From aad8b6bae7c63fcf860c4c7ce693cb8ac5d4a511 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Thu, 1 Sep 2016 10:37:45 +0200 Subject: mlxsw: spectrum: Use existing flood setup when adding VLANs When a VLAN is added on a bridge port we should use the existing unicast flood configuration of the port instead of assuming it's enabled. Fixes: 0293038e0c36 ("mlxsw: spectrum: Add support for flood control") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index e0d95c4..7b654c51 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -167,8 +167,8 @@ static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, } static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port, - u16 idx_begin, u16 idx_end, bool set, - bool only_uc) + u16 idx_begin, u16 idx_end, bool uc_set, + bool bm_set) { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; u16 local_port = mlxsw_sp_port->local_port; @@ -187,28 +187,22 @@ static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port, return -ENOMEM; mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin, - table_type, range, local_port, set); + table_type, range, local_port, uc_set); err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); if (err) goto buffer_out; - /* Flooding control allows one to decide whether a given port will - * flood unicast traffic for which there is no FDB entry. - */ - if (only_uc) - goto buffer_out; - mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin, - table_type, range, local_port, set); + table_type, range, local_port, bm_set); err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); if (err) goto err_flood_bm_set; - else - goto buffer_out; + + goto buffer_out; err_flood_bm_set: mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin, - table_type, range, local_port, !set); + table_type, range, local_port, !uc_set); mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); buffer_out: kfree(sftr_pl); @@ -257,8 +251,7 @@ int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid, * the start of the vFIDs range. */ vfid = mlxsw_sp_fid_to_vfid(fid); - return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set, - false); + return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set, set); } static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port, @@ -520,7 +513,7 @@ static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port, } err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, - true, false); + mlxsw_sp_port->uc_flood, true); if (err) goto err_port_flood_set; -- cgit v0.10.2 From 561ed23331dfefea4c8eec616463ee4d0c8fa4b7 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Thu, 1 Sep 2016 14:45:12 +0800 Subject: qed: fix kzalloc-simple.cocci warnings drivers/net/ethernet/qlogic/qed/qed_dcbx.c:1230:13-20: WARNING: kzalloc should be used for dcbx_info, instead of kmalloc/memset drivers/net/ethernet/qlogic/qed/qed_dcbx.c:1192:13-20: WARNING: kzalloc should be used for dcbx_info, instead of kmalloc/memset Use kzalloc rather than kmalloc followed by memset with 0 This considers some simple cases that are common and easy to validate Note in particular that there are no ...s in the rule, so all of the matched code has to be contiguous Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci CC: Sudarsana Reddy Kalluru Signed-off-by: Fengguang Wu Acked-by: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c index ad023fe..3656d2f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c @@ -1189,13 +1189,12 @@ int qed_dcbx_get_config_params(struct qed_hwfn *p_hwfn, return 0; } - dcbx_info = kmalloc(sizeof(*dcbx_info), GFP_KERNEL); + dcbx_info = kzalloc(sizeof(*dcbx_info), GFP_KERNEL); if (!dcbx_info) { DP_ERR(p_hwfn, "Failed to allocate struct qed_dcbx_info\n"); return -ENOMEM; } - memset(dcbx_info, 0, sizeof(*dcbx_info)); rc = qed_dcbx_query_params(p_hwfn, dcbx_info, QED_DCBX_OPERATIONAL_MIB); if (rc) { kfree(dcbx_info); @@ -1227,13 +1226,12 @@ static struct qed_dcbx_get *qed_dcbnl_get_dcbx(struct qed_hwfn *hwfn, { struct qed_dcbx_get *dcbx_info; - dcbx_info = kmalloc(sizeof(*dcbx_info), GFP_KERNEL); + dcbx_info = kzalloc(sizeof(*dcbx_info), GFP_KERNEL); if (!dcbx_info) { DP_ERR(hwfn->cdev, "Failed to allocate memory for dcbx_info\n"); return NULL; } - memset(dcbx_info, 0, sizeof(*dcbx_info)); if (qed_dcbx_query_params(hwfn, dcbx_info, type)) { kfree(dcbx_info); return NULL; -- cgit v0.10.2 From aabdd09d535073c35f746e46c3a5d3286088be3a Mon Sep 17 00:00:00 2001 From: Ivan Vecera Date: Thu, 1 Sep 2016 11:28:59 +0200 Subject: tg3: Fix for disallow tx coalescing time to be 0 The recent commit 087d7a8c9174 "tg3: Fix for diasllow rx coalescing time to be 0" disallow to set Rx coalescing time to be 0 as this stops generating interrupts for the incoming packets. I found the zero Tx coalescing time stops generating interrupts for outgoing packets as well and fires Tx watchdog later. To avoid this, don't allow to set Tx coalescing time to 0 and also remove subsequent checks that become senseless. Cc: satish.baddipadige@broadcom.com Cc: siva.kallam@broadcom.com Cc: michael.chan@broadcom.com Signed-off-by: Ivan Vecera Acked-by: Siva Reddy Kallam Acked-by: Michael Chan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 6592612..a2551bc 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -14012,6 +14012,7 @@ static int tg3_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) if ((ec->rx_coalesce_usecs > MAX_RXCOL_TICKS) || (!ec->rx_coalesce_usecs) || (ec->tx_coalesce_usecs > MAX_TXCOL_TICKS) || + (!ec->tx_coalesce_usecs) || (ec->rx_max_coalesced_frames > MAX_RXMAX_FRAMES) || (ec->tx_max_coalesced_frames > MAX_TXMAX_FRAMES) || (ec->rx_coalesce_usecs_irq > max_rxcoal_tick_int) || @@ -14022,16 +14023,6 @@ static int tg3_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) (ec->stats_block_coalesce_usecs < min_stat_coal_ticks)) return -EINVAL; - /* No rx interrupts will be generated if both are zero */ - if ((ec->rx_coalesce_usecs == 0) && - (ec->rx_max_coalesced_frames == 0)) - return -EINVAL; - - /* No tx interrupts will be generated if both are zero */ - if ((ec->tx_coalesce_usecs == 0) && - (ec->tx_max_coalesced_frames == 0)) - return -EINVAL; - /* Only copy relevant parameters, ignore all others. */ tp->coal.rx_coalesce_usecs = ec->rx_coalesce_usecs; tp->coal.tx_coalesce_usecs = ec->tx_coalesce_usecs; -- cgit v0.10.2 From d2f394dc4816b7bd1b44981d83509f18f19c53f0 Mon Sep 17 00:00:00 2001 From: Parthasarathy Bhuvaragan Date: Thu, 1 Sep 2016 16:22:16 +0200 Subject: tipc: fix random link resets while adding a second bearer In a dual bearer configuration, if the second tipc link becomes active while the first link still has pending nametable "bulk" updates, it randomly leads to reset of the second link. When a link is established, the function named_distribute(), fills the skb based on node mtu (allows room for TUNNEL_PROTOCOL) with NAME_DISTRIBUTOR message for each PUBLICATION. However, the function named_distribute() allocates the buffer by increasing the node mtu by INT_H_SIZE (to insert NAME_DISTRIBUTOR). This consumes the space allocated for TUNNEL_PROTOCOL. When establishing the second link, the link shall tunnel all the messages in the first link queue including the "bulk" update. As size of the NAME_DISTRIBUTOR messages while tunnelling, exceeds the link mtu the transmission fails (-EMSGSIZE). Thus, the synch point based on the message count of the tunnel packets is never reached leading to link timeout. In this commit, we adjust the size of name distributor message so that they can be tunnelled. Reviewed-by: Jon Maloy Signed-off-by: Parthasarathy Bhuvaragan Signed-off-by: David S. Miller diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c index 6b626a6..a04fe9b 100644 --- a/net/tipc/name_distr.c +++ b/net/tipc/name_distr.c @@ -62,6 +62,8 @@ static void publ_to_item(struct distr_item *i, struct publication *p) /** * named_prepare_buf - allocate & initialize a publication message + * + * The buffer returned is of size INT_H_SIZE + payload size */ static struct sk_buff *named_prepare_buf(struct net *net, u32 type, u32 size, u32 dest) @@ -141,9 +143,9 @@ static void named_distribute(struct net *net, struct sk_buff_head *list, struct publication *publ; struct sk_buff *skb = NULL; struct distr_item *item = NULL; - uint msg_dsz = (tipc_node_get_mtu(net, dnode, 0) / ITEM_SIZE) * - ITEM_SIZE; - uint msg_rem = msg_dsz; + u32 msg_dsz = ((tipc_node_get_mtu(net, dnode, 0) - INT_H_SIZE) / + ITEM_SIZE) * ITEM_SIZE; + u32 msg_rem = msg_dsz; list_for_each_entry(publ, pls, local_list) { /* Prepare next buffer: */ -- cgit v0.10.2 From da29838dcbde86b3bdf3b5702abb5937b4c31d18 Mon Sep 17 00:00:00 2001 From: Andy Gospodarek Date: Mon, 29 Aug 2016 16:51:30 -0400 Subject: MAINTAINERS: update to working email address Signed-off-by: Andy Gospodarek Signed-off-by: David S. Miller diff --git a/MAINTAINERS b/MAINTAINERS index 71aa5da..0537211 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2484,7 +2484,7 @@ F: include/net/bluetooth/ BONDING DRIVER M: Jay Vosburgh M: Veaceslav Falico -M: Andy Gospodarek +M: Andy Gospodarek L: netdev@vger.kernel.org W: http://sourceforge.net/projects/bonding/ S: Supported -- cgit v0.10.2 From a036244c068612a43fa8c0f33a0eb4daa4d8dba0 Mon Sep 17 00:00:00 2001 From: Dave Ertman Date: Mon, 29 Aug 2016 17:38:26 -0700 Subject: i40e: Fix kernel panic on enable/disable LLDP If DCB is configured on the link partner switch with an unsupported traffic class configuration (e.g. non-contiguous TCs), the driver is flagging DCB as disabled. But, for future DCB LLDPDUs, the driver was checking if the interface was DCB capable instead of enabled. This was causing a kernel panic when LLDP was enabled/disabled on the link partner switch. This patch corrects the situation by having the LLDP event handler check the correct flag in the pf structure. It also cleans up the setting and clearing of the enabled flag for other checks. Signed-off-by: Dave Ertman Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 828ed28..d0b3a1b 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -5113,9 +5113,13 @@ static int i40e_init_pf_dcb(struct i40e_pf *pf) DCB_CAP_DCBX_VER_IEEE; pf->flags |= I40E_FLAG_DCB_CAPABLE; - /* Enable DCB tagging only when more than one TC */ + /* Enable DCB tagging only when more than one TC + * or explicitly disable if only one TC + */ if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1) pf->flags |= I40E_FLAG_DCB_ENABLED; + else + pf->flags &= ~I40E_FLAG_DCB_ENABLED; dev_dbg(&pf->pdev->dev, "DCBX offload is supported for this PF.\n"); } @@ -5716,7 +5720,7 @@ static int i40e_handle_lldp_event(struct i40e_pf *pf, u8 type; /* Not DCB capable or capability disabled */ - if (!(pf->flags & I40E_FLAG_DCB_CAPABLE)) + if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) return ret; /* Ignore if event is not for Nearest Bridge */ @@ -7896,6 +7900,7 @@ static int i40e_init_interrupt_scheme(struct i40e_pf *pf) #endif I40E_FLAG_RSS_ENABLED | I40E_FLAG_DCB_CAPABLE | + I40E_FLAG_DCB_ENABLED | I40E_FLAG_SRIOV_ENABLED | I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED | @@ -10502,6 +10507,7 @@ static void i40e_determine_queue_usage(struct i40e_pf *pf) I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED | I40E_FLAG_DCB_CAPABLE | + I40E_FLAG_DCB_ENABLED | I40E_FLAG_SRIOV_ENABLED | I40E_FLAG_VMDQ_ENABLED); } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED | @@ -10525,7 +10531,8 @@ static void i40e_determine_queue_usage(struct i40e_pf *pf) /* Not enough queues for all TCs */ if ((pf->flags & I40E_FLAG_DCB_CAPABLE) && (queues_left < I40E_MAX_TRAFFIC_CLASS)) { - pf->flags &= ~I40E_FLAG_DCB_CAPABLE; + pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | + I40E_FLAG_DCB_ENABLED); dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n"); } pf->num_lan_qps = max_t(int, pf->rss_size_max, @@ -10922,7 +10929,7 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) err = i40e_init_pf_dcb(pf); if (err) { dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err); - pf->flags &= ~I40E_FLAG_DCB_CAPABLE; + pf->flags &= ~(I40E_FLAG_DCB_CAPABLE & I40E_FLAG_DCB_ENABLED); /* Continue without DCB enabled */ } #endif /* CONFIG_I40E_DCB */ -- cgit v0.10.2 From 57e81d44b0e1aa4dcb479ff8de8fc34cf635d0e8 Mon Sep 17 00:00:00 2001 From: Sunil Goutham Date: Tue, 30 Aug 2016 11:36:26 +0530 Subject: net: thunderx: Fix for HW issue while padding TSO packet There is a issue in HW where-in while sending GSO sized pkts as part of TSO, if pkt len falls below configured min packet size i.e 60, NIC will zero PAD packet and also updates IP total length. Hence set this value to lessthan min pkt size of MAC + IP + TCP headers, BGX will anyway do the padding to transmit 64 byte pkt including FCS. Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index 16ed203..85cc782 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -251,9 +251,14 @@ static void nic_set_tx_pkt_pad(struct nicpf *nic, int size) int lmac; u64 lmac_cfg; - /* Max value that can be set is 60 */ - if (size > 60) - size = 60; + /* There is a issue in HW where-in while sending GSO sized + * pkts as part of TSO, if pkt len falls below this size + * NIC will zero PAD packet and also updates IP total length. + * Hence set this value to lessthan min pkt size of MAC+IP+TCP + * headers, BGX will do the padding to transmit 64 byte pkt. + */ + if (size > 52) + size = 52; for (lmac = 0; lmac < (MAX_BGX_PER_CN88XX * MAX_LMAC_PER_BGX); lmac++) { lmac_cfg = nic_reg_read(nic, NIC_PF_LMAC_0_7_CFG | (lmac << 3)); -- cgit v0.10.2 From 7ceb8a1319ec64954459d474dd4a8c3c60ff0999 Mon Sep 17 00:00:00 2001 From: Sunil Goutham Date: Tue, 30 Aug 2016 11:36:27 +0530 Subject: net: thunderx: Fix for issues with multiple CQEs posted for a TSO packet On ThunderX 88xx pass 2.x chips when TSO is offloaded to HW, HW posts a CQE for every TSO segment transmitted. Current code does handles this, but is prone to issues when segment sizes are small resulting in SW processing too many CQEs and also at times frees a SKB which is not yet transmitted. This patch handles the errata in a different way and eliminates issues with earlier approach, TSO packet is submitted to HW with post_cqe=0, so that no CQE is posted upon completion of transmission of TSO packet but a additional HDR + IMMEDIATE descriptors are added to SQ due to which a CQE is posted and will have required info to be used while cleanup in napi. This way only one CQE is posted for a TSO packet. Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h index 83025bb..e29815d 100644 --- a/drivers/net/ethernet/cavium/thunder/nic.h +++ b/drivers/net/ethernet/cavium/thunder/nic.h @@ -279,6 +279,7 @@ struct nicvf { u8 sqs_id; bool sqs_mode; bool hw_tso; + bool t88; /* Receive buffer alloc */ u32 rb_page_offset; diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c index a19e73f..3240349 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c @@ -513,6 +513,7 @@ static void nicvf_snd_pkt_handler(struct net_device *netdev, struct nicvf *nic = netdev_priv(netdev); struct snd_queue *sq; struct sq_hdr_subdesc *hdr; + struct sq_hdr_subdesc *tso_sqe; sq = &nic->qs->sq[cqe_tx->sq_idx]; @@ -527,17 +528,21 @@ static void nicvf_snd_pkt_handler(struct net_device *netdev, nicvf_check_cqe_tx_errs(nic, cq, cqe_tx); skb = (struct sk_buff *)sq->skbuff[cqe_tx->sqe_ptr]; - /* For TSO offloaded packets only one SQE will have a valid SKB */ if (skb) { + /* Check for dummy descriptor used for HW TSO offload on 88xx */ + if (hdr->dont_send) { + /* Get actual TSO descriptors and free them */ + tso_sqe = + (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, hdr->rsvd2); + nicvf_put_sq_desc(sq, tso_sqe->subdesc_cnt + 1); + } nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1); prefetch(skb); dev_consume_skb_any(skb); sq->skbuff[cqe_tx->sqe_ptr] = (u64)NULL; } else { - /* In case of HW TSO, HW sends a CQE for each segment of a TSO - * packet instead of a single CQE for the whole TSO packet - * transmitted. Each of this CQE points to the same SQE, so - * avoid freeing same SQE multiple times. + /* In case of SW TSO on 88xx, only last segment will have + * a SKB attached, so just free SQEs here. */ if (!nic->hw_tso) nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1); @@ -1502,6 +1507,7 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct net_device *netdev; struct nicvf *nic; int err, qcount; + u16 sdevid; err = pci_enable_device(pdev); if (err) { @@ -1575,6 +1581,10 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (!pass1_silicon(nic->pdev)) nic->hw_tso = true; + pci_read_config_word(nic->pdev, PCI_SUBSYSTEM_ID, &sdevid); + if (sdevid == 0xA134) + nic->t88 = true; + /* Check if this VF is in QS only mode */ if (nic->sqs_mode) return 0; diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index 0ff8e60..dda3ea3 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -938,6 +938,8 @@ static int nicvf_tso_count_subdescs(struct sk_buff *skb) return num_edescs + sh->gso_segs; } +#define POST_CQE_DESC_COUNT 2 + /* Get the number of SQ descriptors needed to xmit this skb */ static int nicvf_sq_subdesc_required(struct nicvf *nic, struct sk_buff *skb) { @@ -948,6 +950,10 @@ static int nicvf_sq_subdesc_required(struct nicvf *nic, struct sk_buff *skb) return subdesc_cnt; } + /* Dummy descriptors to get TSO pkt completion notification */ + if (nic->t88 && nic->hw_tso && skb_shinfo(skb)->gso_size) + subdesc_cnt += POST_CQE_DESC_COUNT; + if (skb_shinfo(skb)->nr_frags) subdesc_cnt += skb_shinfo(skb)->nr_frags; @@ -965,14 +971,21 @@ nicvf_sq_add_hdr_subdesc(struct nicvf *nic, struct snd_queue *sq, int qentry, struct sq_hdr_subdesc *hdr; hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, qentry); - sq->skbuff[qentry] = (u64)skb; - memset(hdr, 0, SND_QUEUE_DESC_SIZE); hdr->subdesc_type = SQ_DESC_TYPE_HEADER; - /* Enable notification via CQE after processing SQE */ - hdr->post_cqe = 1; - /* No of subdescriptors following this */ - hdr->subdesc_cnt = subdesc_cnt; + + if (nic->t88 && nic->hw_tso && skb_shinfo(skb)->gso_size) { + /* post_cqe = 0, to avoid HW posting a CQE for every TSO + * segment transmitted on 88xx. + */ + hdr->subdesc_cnt = subdesc_cnt - POST_CQE_DESC_COUNT; + } else { + sq->skbuff[qentry] = (u64)skb; + /* Enable notification via CQE after processing SQE */ + hdr->post_cqe = 1; + /* No of subdescriptors following this */ + hdr->subdesc_cnt = subdesc_cnt; + } hdr->tot_len = len; /* Offload checksum calculation to HW */ @@ -1023,6 +1036,37 @@ static inline void nicvf_sq_add_gather_subdesc(struct snd_queue *sq, int qentry, gather->addr = data; } +/* Add HDR + IMMEDIATE subdescriptors right after descriptors of a TSO + * packet so that a CQE is posted as a notifation for transmission of + * TSO packet. + */ +static inline void nicvf_sq_add_cqe_subdesc(struct snd_queue *sq, int qentry, + int tso_sqe, struct sk_buff *skb) +{ + struct sq_imm_subdesc *imm; + struct sq_hdr_subdesc *hdr; + + sq->skbuff[qentry] = (u64)skb; + + hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, qentry); + memset(hdr, 0, SND_QUEUE_DESC_SIZE); + hdr->subdesc_type = SQ_DESC_TYPE_HEADER; + /* Enable notification via CQE after processing SQE */ + hdr->post_cqe = 1; + /* There is no packet to transmit here */ + hdr->dont_send = 1; + hdr->subdesc_cnt = POST_CQE_DESC_COUNT - 1; + hdr->tot_len = 1; + /* Actual TSO header SQE index, needed for cleanup */ + hdr->rsvd2 = tso_sqe; + + qentry = nicvf_get_nxt_sqentry(sq, qentry); + imm = (struct sq_imm_subdesc *)GET_SQ_DESC(sq, qentry); + memset(imm, 0, SND_QUEUE_DESC_SIZE); + imm->subdesc_type = SQ_DESC_TYPE_IMMEDIATE; + imm->len = 1; +} + /* Segment a TSO packet into 'gso_size' segments and append * them to SQ for transfer */ @@ -1096,7 +1140,7 @@ static int nicvf_sq_append_tso(struct nicvf *nic, struct snd_queue *sq, int nicvf_sq_append_skb(struct nicvf *nic, struct sk_buff *skb) { int i, size; - int subdesc_cnt; + int subdesc_cnt, tso_sqe = 0; int sq_num, qentry; struct queue_set *qs; struct snd_queue *sq; @@ -1131,6 +1175,7 @@ int nicvf_sq_append_skb(struct nicvf *nic, struct sk_buff *skb) /* Add SQ header subdesc */ nicvf_sq_add_hdr_subdesc(nic, sq, qentry, subdesc_cnt - 1, skb, skb->len); + tso_sqe = qentry; /* Add SQ gather subdescs */ qentry = nicvf_get_nxt_sqentry(sq, qentry); @@ -1154,6 +1199,11 @@ int nicvf_sq_append_skb(struct nicvf *nic, struct sk_buff *skb) } doorbell: + if (nic->t88 && skb_shinfo(skb)->gso_size) { + qentry = nicvf_get_nxt_sqentry(sq, qentry); + nicvf_sq_add_cqe_subdesc(sq, qentry, tso_sqe, skb); + } + /* make sure all memory stores are done before ringing doorbell */ smp_wmb(); -- cgit v0.10.2 From d26c638c16cb54f6fb1507e27df93ede692db572 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Tue, 30 Aug 2016 10:09:21 +0200 Subject: ipv6: add missing netconf notif when 'all' is updated The 'default' value was not advertised. Fixes: f3a1bfb11ccb ("rtnl/ipv6: use netconf msg to advertise forwarding status") Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index f418d2e..2a68817 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -778,7 +778,14 @@ static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int newf) } if (p == &net->ipv6.devconf_all->forwarding) { + int old_dflt = net->ipv6.devconf_dflt->forwarding; + net->ipv6.devconf_dflt->forwarding = newf; + if ((!newf) ^ (!old_dflt)) + inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING, + NETCONFA_IFINDEX_DEFAULT, + net->ipv6.devconf_dflt); + addrconf_forward_change(net, newf); if ((!newf) ^ (!old)) inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING, -- cgit v0.10.2 From 29c994e361009142ec0bca6493cc8f7b0d3c561a Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Tue, 30 Aug 2016 10:09:22 +0200 Subject: netconf: add a notif when settings are created All changes are notified, but the initial state was missing. Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 415e117..062a67c 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -2232,7 +2232,7 @@ static struct devinet_sysctl_table { }; static int __devinet_sysctl_register(struct net *net, char *dev_name, - struct ipv4_devconf *p) + int ifindex, struct ipv4_devconf *p) { int i; struct devinet_sysctl_table *t; @@ -2255,6 +2255,8 @@ static int __devinet_sysctl_register(struct net *net, char *dev_name, goto free; p->sysctl = t; + + inet_netconf_notify_devconf(net, NETCONFA_ALL, ifindex, p); return 0; free: @@ -2286,7 +2288,7 @@ static int devinet_sysctl_register(struct in_device *idev) if (err) return err; err = __devinet_sysctl_register(dev_net(idev->dev), idev->dev->name, - &idev->cnf); + idev->dev->ifindex, &idev->cnf); if (err) neigh_sysctl_unregister(idev->arp_parms); return err; @@ -2347,11 +2349,12 @@ static __net_init int devinet_init_net(struct net *net) } #ifdef CONFIG_SYSCTL - err = __devinet_sysctl_register(net, "all", all); + err = __devinet_sysctl_register(net, "all", NETCONFA_IFINDEX_ALL, all); if (err < 0) goto err_reg_all; - err = __devinet_sysctl_register(net, "default", dflt); + err = __devinet_sysctl_register(net, "default", + NETCONFA_IFINDEX_DEFAULT, dflt); if (err < 0) goto err_reg_dflt; diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 2a68817..bdf368e 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -6032,7 +6032,7 @@ static const struct ctl_table addrconf_sysctl[] = { static int __addrconf_sysctl_register(struct net *net, char *dev_name, struct inet6_dev *idev, struct ipv6_devconf *p) { - int i; + int i, ifindex; struct ctl_table *table; char path[sizeof("net/ipv6/conf/") + IFNAMSIZ]; @@ -6052,6 +6052,13 @@ static int __addrconf_sysctl_register(struct net *net, char *dev_name, if (!p->sysctl_header) goto free; + if (!strcmp(dev_name, "all")) + ifindex = NETCONFA_IFINDEX_ALL; + else if (!strcmp(dev_name, "default")) + ifindex = NETCONFA_IFINDEX_DEFAULT; + else + ifindex = idev->dev->ifindex; + inet6_netconf_notify_devconf(net, NETCONFA_ALL, ifindex, p); return 0; free: -- cgit v0.10.2 From 85a3d4a9356b595d5440c3f1bf07ee7cecca1567 Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Tue, 30 Aug 2016 17:44:29 +0200 Subject: net: bridge: don't increment tx_dropped in br_do_proxy_arp pskb_may_pull may fail due to various reasons (e.g. alloc failure), but the skb isn't changed/dropped and processing continues so we shouldn't increment tx_dropped. CC: Kyeyoon Park CC: Roopa Prabhu CC: Stephen Hemminger CC: bridge@lists.linux-foundation.org Fixes: 958501163ddd ("bridge: Add support for IEEE 802.11 Proxy ARP") Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 8e48620..abe11f0 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -80,13 +80,10 @@ static void br_do_proxy_arp(struct sk_buff *skb, struct net_bridge *br, BR_INPUT_SKB_CB(skb)->proxyarp_replied = false; - if (dev->flags & IFF_NOARP) + if ((dev->flags & IFF_NOARP) || + !pskb_may_pull(skb, arp_hdr_len(dev))) return; - if (!pskb_may_pull(skb, arp_hdr_len(dev))) { - dev->stats.tx_dropped++; - return; - } parp = arp_hdr(skb); if (parp->ar_pro != htons(ETH_P_IP) || -- cgit v0.10.2 From 28b346cbc0715ae45b2814d857f1d8a7e6817ed8 Mon Sep 17 00:00:00 2001 From: Neal Cardwell Date: Tue, 30 Aug 2016 11:55:23 -0400 Subject: tcp: fastopen: fix rcv_wup initialization for TFO server on SYN/data Yuchung noticed that on the first TFO server data packet sent after the (TFO) handshake, the server echoed the TCP timestamp value in the SYN/data instead of the timestamp value in the final ACK of the handshake. This problem did not happen on regular opens. The tcp_replace_ts_recent() logic that decides whether to remember an incoming TS value needs tp->rcv_wup to hold the latest receive sequence number that we have ACKed (latest tp->rcv_nxt we have ACKed). This commit fixes this issue by ensuring that a TFO server properly updates tp->rcv_wup to match tp->rcv_nxt at the time it sends a SYN/ACK for the SYN/data. Reported-by: Yuchung Cheng Signed-off-by: Neal Cardwell Signed-off-by: Yuchung Cheng Signed-off-by: Eric Dumazet Signed-off-by: Soheil Hassas Yeganeh Fixes: 168a8f58059a ("tcp: TCP Fast Open Server - main code path") Signed-off-by: David S. Miller diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c index 54d9f9b..62a5751 100644 --- a/net/ipv4/tcp_fastopen.c +++ b/net/ipv4/tcp_fastopen.c @@ -226,6 +226,7 @@ static struct sock *tcp_fastopen_create_child(struct sock *sk, tcp_fastopen_add_skb(child, skb); tcp_rsk(req)->rcv_nxt = tp->rcv_nxt; + tp->rcv_wup = tp->rcv_nxt; /* tcp_conn_request() is sending the SYNACK, * and queues the child into listener accept queue. */ -- cgit v0.10.2 From 6b4e3181d7bd5ca5ab6f45929e4a5ffa7ab4ab7f Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Thu, 1 Sep 2016 16:14:41 -0700 Subject: mm, oom: prevent premature OOM killer invocation for high order request There have been several reports about pre-mature OOM killer invocation in 4.7 kernel when order-2 allocation request (for the kernel stack) invoked OOM killer even during basic workloads (light IO or even kernel compile on some filesystems). In all reported cases the memory is fragmented and there are no order-2+ pages available. There is usually a large amount of slab memory (usually dentries/inodes) and further debugging has shown that there are way too many unmovable blocks which are skipped during the compaction. Multiple reporters have confirmed that the current linux-next which includes [1] and [2] helped and OOMs are not reproducible anymore. A simpler fix for the late rc and stable is to simply ignore the compaction feedback and retry as long as there is a reclaim progress and we are not getting OOM for order-0 pages. We already do that for CONFING_COMPACTION=n so let's reuse the same code when compaction is enabled as well. [1] http://lkml.kernel.org/r/20160810091226.6709-1-vbabka@suse.cz [2] http://lkml.kernel.org/r/f7a9ea9d-bb88-bfd6-e340-3a933559305a@suse.cz Fixes: 0a0337e0d1d1 ("mm, oom: rework oom detection") Link: http://lkml.kernel.org/r/20160823074339.GB23577@dhcp22.suse.cz Signed-off-by: Michal Hocko Tested-by: Olaf Hering Tested-by: Ralf-Peter Rohbeck Cc: Markus Trippelsdorf Cc: Arkadiusz Miskiewicz Cc: Ralf-Peter Rohbeck Cc: Jiri Slaby Cc: Vlastimil Babka Cc: Joonsoo Kim Cc: Tetsuo Handa Cc: David Rientjes Cc: [4.7.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 3fbe73a..7791a03 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3137,54 +3137,6 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, return NULL; } -static inline bool -should_compact_retry(struct alloc_context *ac, int order, int alloc_flags, - enum compact_result compact_result, - enum compact_priority *compact_priority, - int compaction_retries) -{ - int max_retries = MAX_COMPACT_RETRIES; - - if (!order) - return false; - - /* - * compaction considers all the zone as desperately out of memory - * so it doesn't really make much sense to retry except when the - * failure could be caused by insufficient priority - */ - if (compaction_failed(compact_result)) { - if (*compact_priority > MIN_COMPACT_PRIORITY) { - (*compact_priority)--; - return true; - } - return false; - } - - /* - * make sure the compaction wasn't deferred or didn't bail out early - * due to locks contention before we declare that we should give up. - * But do not retry if the given zonelist is not suitable for - * compaction. - */ - if (compaction_withdrawn(compact_result)) - return compaction_zonelist_suitable(ac, order, alloc_flags); - - /* - * !costly requests are much more important than __GFP_REPEAT - * costly ones because they are de facto nofail and invoke OOM - * killer to move on while costly can fail and users are ready - * to cope with that. 1/4 retries is rather arbitrary but we - * would need much more detailed feedback from compaction to - * make a better decision. - */ - if (order > PAGE_ALLOC_COSTLY_ORDER) - max_retries /= 4; - if (compaction_retries <= max_retries) - return true; - - return false; -} #else static inline struct page * __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, @@ -3195,6 +3147,8 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order, return NULL; } +#endif /* CONFIG_COMPACTION */ + static inline bool should_compact_retry(struct alloc_context *ac, unsigned int order, int alloc_flags, enum compact_result compact_result, @@ -3221,7 +3175,6 @@ should_compact_retry(struct alloc_context *ac, unsigned int order, int alloc_fla } return false; } -#endif /* CONFIG_COMPACTION */ /* Perform direct synchronous page reclaim */ static int -- cgit v0.10.2 From 070c43eea5043e950daa423707ae3c77e2f48edb Mon Sep 17 00:00:00 2001 From: Thiago Jung Bauermann Date: Thu, 1 Sep 2016 16:14:44 -0700 Subject: kexec: fix double-free when failing to relocate the purgatory If kexec_apply_relocations fails, kexec_load_purgatory frees pi->sechdrs and pi->purgatory_buf. This is redundant, because in case of error kimage_file_prepare_segments calls kimage_file_post_load_cleanup, which will also free those buffers. This causes two warnings like the following, one for pi->sechdrs and the other for pi->purgatory_buf: kexec-bzImage64: Loading purgatory failed ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2119 at mm/vmalloc.c:1490 __vunmap+0xc1/0xd0 Trying to vfree() nonexistent vm area (ffffc90000e91000) Modules linked in: CPU: 1 PID: 2119 Comm: kexec Not tainted 4.8.0-rc3+ #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: dump_stack+0x4d/0x65 __warn+0xcb/0xf0 warn_slowpath_fmt+0x4f/0x60 ? find_vmap_area+0x19/0x70 ? kimage_file_post_load_cleanup+0x47/0xb0 __vunmap+0xc1/0xd0 vfree+0x2e/0x70 kimage_file_post_load_cleanup+0x5e/0xb0 SyS_kexec_file_load+0x448/0x680 ? putname+0x54/0x60 ? do_sys_open+0x190/0x1f0 entry_SYSCALL_64_fastpath+0x13/0x8f ---[ end trace 158bb74f5950ca2b ]--- Fix by setting pi->sechdrs an pi->purgatory_buf to NULL, since vfree won't try to free a NULL pointer. Link: http://lkml.kernel.org/r/1472083546-23683-1-git-send-email-bauerman@linux.vnet.ibm.com Signed-off-by: Thiago Jung Bauermann Acked-by: Baoquan He Cc: "Eric W. Biederman" Cc: Vivek Goyal Cc: Dave Young Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 503bc2d..037c321 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -887,7 +887,10 @@ int kexec_load_purgatory(struct kimage *image, unsigned long min, return 0; out: vfree(pi->sechdrs); + pi->sechdrs = NULL; + vfree(pi->purgatory_buf); + pi->purgatory_buf = NULL; return ret; } -- cgit v0.10.2 From 236dec051078a8691950f56949612b4b74107e48 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 1 Sep 2016 16:14:47 -0700 Subject: kconfig: tinyconfig: provide whole choice blocks to avoid warnings Using "make tinyconfig" produces a couple of annoying warnings that show up for build test machines all the time: .config:966:warning: override: NOHIGHMEM changes choice state .config:965:warning: override: SLOB changes choice state .config:963:warning: override: KERNEL_XZ changes choice state .config:962:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state .config:933:warning: override: SLOB changes choice state .config:930:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state .config:870:warning: override: SLOB changes choice state .config:868:warning: override: KERNEL_XZ changes choice state .config:867:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state I've made a previous attempt at fixing them and we discussed a number of alternatives. I tried changing the Makefile to use "merge_config.sh -n $(fragment-list)" but couldn't get that to work properly. This is yet another approach, based on the observation that we do want to see a warning for conflicting 'choice' options, and that we can simply make them non-conflicting by listing all other options as disabled. This is a trivial patch that we can apply independent of plans for other changes. Link: http://lkml.kernel.org/r/20160829214952.1334674-2-arnd@arndb.de Link: https://storage.kernelci.org/mainline/v4.7-rc6/x86-tinyconfig/build.log https://patchwork.kernel.org/patch/9212749/ Signed-off-by: Arnd Bergmann Reviewed-by: Josh Triplett Reviewed-by: Masahiro Yamada Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/arch/x86/configs/tiny.config b/arch/x86/configs/tiny.config index 4e2ecfa..4b429df 100644 --- a/arch/x86/configs/tiny.config +++ b/arch/x86/configs/tiny.config @@ -1 +1,3 @@ CONFIG_NOHIGHMEM=y +# CONFIG_HIGHMEM4G is not set +# CONFIG_HIGHMEM64G is not set diff --git a/kernel/configs/tiny.config b/kernel/configs/tiny.config index c2de56a..7fa0c4a 100644 --- a/kernel/configs/tiny.config +++ b/kernel/configs/tiny.config @@ -1,4 +1,12 @@ +# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_KERNEL_GZIP is not set +# CONFIG_KERNEL_BZIP2 is not set +# CONFIG_KERNEL_LZMA is not set CONFIG_KERNEL_XZ=y +# CONFIG_KERNEL_LZO is not set +# CONFIG_KERNEL_LZ4 is not set CONFIG_OPTIMIZE_INLINING=y +# CONFIG_SLAB is not set +# CONFIG_SLUB is not set CONFIG_SLOB=y -- cgit v0.10.2 From ed76b7a131f41c91b0c725d472f9b969d75ce888 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 1 Sep 2016 16:14:50 -0700 Subject: lib/test_hash.c: fix warning in two-dimensional array init lib/test_hash.c: In function 'test_hash_init': lib/test_hash.c:146:2: warning: missing braces around initializer [-Wmissing-braces] Fixes: 468a9428521e7d00 (": Add support for architecture-specific functions") Link: http://lkml.kernel.org/r/20160829214952.1334674-3-arnd@arndb.de Signed-off-by: Geert Uytterhoeven Signed-off-by: Arnd Bergmann Acked-by: George Spelvin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/lib/test_hash.c b/lib/test_hash.c index 66c5fc8..81702ee 100644 --- a/lib/test_hash.c +++ b/lib/test_hash.c @@ -143,7 +143,7 @@ static int __init test_hash_init(void) { char buf[SIZE+1]; - u32 string_or = 0, hash_or[2][33] = { 0 }; + u32 string_or = 0, hash_or[2][33] = { { 0, } }; unsigned tests = 0; unsigned long long h64 = 0; int i, j; -- cgit v0.10.2 From e6173ba42bbdba05fd4f3021c0beda0506271507 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 1 Sep 2016 16:14:53 -0700 Subject: lib/test_hash.c: fix warning in preprocessor symbol evaluation Some versions of gcc don't like tests for the value of an undefined preprocessor symbol, even in the #else branch of an #ifndef: lib/test_hash.c:224:7: warning: "HAVE_ARCH__HASH_32" is not defined [-Wundef] #elif HAVE_ARCH__HASH_32 != 1 ^ lib/test_hash.c:229:7: warning: "HAVE_ARCH_HASH_32" is not defined [-Wundef] #elif HAVE_ARCH_HASH_32 != 1 ^ lib/test_hash.c:234:7: warning: "HAVE_ARCH_HASH_64" is not defined [-Wundef] #elif HAVE_ARCH_HASH_64 != 1 ^ Seen with gcc 4.9, not seen with 4.1.2. Change the logic to only check the value inside an #ifdef to fix this. Fixes: 468a9428521e7d00 (": Add support for architecture-specific functions") Link: http://lkml.kernel.org/r/20160829214952.1334674-4-arnd@arndb.de Signed-off-by: Geert Uytterhoeven Signed-off-by: Arnd Bergmann Acked-by: George Spelvin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/lib/test_hash.c b/lib/test_hash.c index 81702ee..cac20c5 100644 --- a/lib/test_hash.c +++ b/lib/test_hash.c @@ -219,21 +219,27 @@ test_hash_init(void) } /* Issue notices about skipped tests. */ -#ifndef HAVE_ARCH__HASH_32 - pr_info("__hash_32() has no arch implementation to test."); -#elif HAVE_ARCH__HASH_32 != 1 +#ifdef HAVE_ARCH__HASH_32 +#if HAVE_ARCH__HASH_32 != 1 pr_info("__hash_32() is arch-specific; not compared to generic."); #endif -#ifndef HAVE_ARCH_HASH_32 - pr_info("hash_32() has no arch implementation to test."); -#elif HAVE_ARCH_HASH_32 != 1 +#else + pr_info("__hash_32() has no arch implementation to test."); +#endif +#ifdef HAVE_ARCH_HASH_32 +#if HAVE_ARCH_HASH_32 != 1 pr_info("hash_32() is arch-specific; not compared to generic."); #endif -#ifndef HAVE_ARCH_HASH_64 - pr_info("hash_64() has no arch implementation to test."); -#elif HAVE_ARCH_HASH_64 != 1 +#else + pr_info("hash_32() has no arch implementation to test."); +#endif +#ifdef HAVE_ARCH_HASH_64 +#if HAVE_ARCH_HASH_64 != 1 pr_info("hash_64() is arch-specific; not compared to generic."); #endif +#else + pr_info("hash_64() has no arch implementation to test."); +#endif pr_notice("%u tests passed.", tests); -- cgit v0.10.2 From 6aa303defb7454a2520c4ddcdf6b081f62a15890 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 1 Sep 2016 16:14:55 -0700 Subject: mm, vmscan: only allocate and reclaim from zones with pages managed by the buddy allocator Firmware Assisted Dump (FA_DUMP) on ppc64 reserves substantial amounts of memory when booting a secondary kernel. Srikar Dronamraju reported that multiple nodes may have no memory managed by the buddy allocator but still return true for populated_zone(). Commit 1d82de618ddd ("mm, vmscan: make kswapd reclaim in terms of nodes") was reported to cause kswapd to spin at 100% CPU usage when fadump was enabled. The old code happened to deal with the situation of a populated node with zero free pages by co-incidence but the current code tries to reclaim populated zones without realising that is impossible. We cannot just convert populated_zone() as many existing users really need to check for present_pages. This patch introduces a managed_zone() helper and uses it in the few cases where it is critical that the check is made for managed pages -- zonelist construction and page reclaim. Link: http://lkml.kernel.org/r/20160831195104.GB8119@techsingularity.net Signed-off-by: Mel Gorman Reported-by: Srikar Dronamraju Tested-by: Srikar Dronamraju Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index d572b78..7f2ae99 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -828,9 +828,21 @@ unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long); */ #define zone_idx(zone) ((zone) - (zone)->zone_pgdat->node_zones) -static inline int populated_zone(struct zone *zone) +/* + * Returns true if a zone has pages managed by the buddy allocator. + * All the reclaim decisions have to use this function rather than + * populated_zone(). If the whole zone is reserved then we can easily + * end up with populated_zone() && !managed_zone(). + */ +static inline bool managed_zone(struct zone *zone) +{ + return zone->managed_pages; +} + +/* Returns true if a zone has memory */ +static inline bool populated_zone(struct zone *zone) { - return (!!zone->present_pages); + return zone->present_pages; } extern int movable_zone; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 7791a03..a2214c6 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4360,7 +4360,7 @@ static int build_zonelists_node(pg_data_t *pgdat, struct zonelist *zonelist, do { zone_type--; zone = pgdat->node_zones + zone_type; - if (populated_zone(zone)) { + if (managed_zone(zone)) { zoneref_set_zone(zone, &zonelist->_zonerefs[nr_zones++]); check_highest_zone(zone_type); @@ -4598,7 +4598,7 @@ static void build_zonelists_in_zone_order(pg_data_t *pgdat, int nr_nodes) for (j = 0; j < nr_nodes; j++) { node = node_order[j]; z = &NODE_DATA(node)->node_zones[zone_type]; - if (populated_zone(z)) { + if (managed_zone(z)) { zoneref_set_zone(z, &zonelist->_zonerefs[pos++]); check_highest_zone(zone_type); diff --git a/mm/vmscan.c b/mm/vmscan.c index 374d95d..b1e12a1 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1665,7 +1665,7 @@ static bool inactive_reclaimable_pages(struct lruvec *lruvec, for (zid = sc->reclaim_idx; zid >= 0; zid--) { zone = &pgdat->node_zones[zid]; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; if (zone_page_state_snapshot(zone, NR_ZONE_LRU_BASE + @@ -2036,7 +2036,7 @@ static bool inactive_list_is_low(struct lruvec *lruvec, bool file, struct zone *zone = &pgdat->node_zones[zid]; unsigned long inactive_zone, active_zone; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; inactive_zone = zone_page_state(zone, @@ -2171,7 +2171,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg, for (z = 0; z < MAX_NR_ZONES; z++) { struct zone *zone = &pgdat->node_zones[z]; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; total_high_wmark += high_wmark_pages(zone); @@ -2510,7 +2510,7 @@ static inline bool should_continue_reclaim(struct pglist_data *pgdat, /* If compaction would go ahead or the allocation would succeed, stop */ for (z = 0; z <= sc->reclaim_idx; z++) { struct zone *zone = &pgdat->node_zones[z]; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; switch (compaction_suitable(zone, sc->order, 0, sc->reclaim_idx)) { @@ -2840,7 +2840,7 @@ static bool pfmemalloc_watermark_ok(pg_data_t *pgdat) for (i = 0; i <= ZONE_NORMAL; i++) { zone = &pgdat->node_zones[i]; - if (!populated_zone(zone) || + if (!managed_zone(zone) || pgdat_reclaimable_pages(pgdat) == 0) continue; @@ -3141,7 +3141,7 @@ static bool prepare_kswapd_sleep(pg_data_t *pgdat, int order, int classzone_idx) for (i = 0; i <= classzone_idx; i++) { struct zone *zone = pgdat->node_zones + i; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; if (!zone_balanced(zone, order, classzone_idx)) @@ -3169,7 +3169,7 @@ static bool kswapd_shrink_node(pg_data_t *pgdat, sc->nr_to_reclaim = 0; for (z = 0; z <= sc->reclaim_idx; z++) { zone = pgdat->node_zones + z; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; sc->nr_to_reclaim += max(high_wmark_pages(zone), SWAP_CLUSTER_MAX); @@ -3242,7 +3242,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx) if (buffer_heads_over_limit) { for (i = MAX_NR_ZONES - 1; i >= 0; i--) { zone = pgdat->node_zones + i; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; sc.reclaim_idx = i; @@ -3262,7 +3262,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx) */ for (i = classzone_idx; i >= 0; i--) { zone = pgdat->node_zones + i; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; if (zone_balanced(zone, sc.order, classzone_idx)) @@ -3508,7 +3508,7 @@ void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx) pg_data_t *pgdat; int z; - if (!populated_zone(zone)) + if (!managed_zone(zone)) return; if (!cpuset_zone_allowed(zone, GFP_KERNEL | __GFP_HARDWALL)) @@ -3522,7 +3522,7 @@ void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx) /* Only wake kswapd if all zones are unbalanced */ for (z = 0; z <= classzone_idx; z++) { zone = pgdat->node_zones + z; - if (!populated_zone(zone)) + if (!managed_zone(zone)) continue; if (zone_balanced(zone, order, classzone_idx)) -- cgit v0.10.2 From 8a793bea2745d9876030f892a84fc8be180f2e78 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 1 Sep 2016 16:14:58 -0700 Subject: drivers/scsi/wd719x.c: remove last declaration using DEFINE_PCI_DEVICE_TABLE Convert it to the preferred const struct pci_device_id instead. Link: http://lkml.kernel.org/r/95c5e4100c3cd4eda643624f5b70e8d7abceb86c.1472660229.git.joe@perches.com Signed-off-by: Joe Perches Reviewed-by: Bart Van Assche Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/scsi/wd719x.c b/drivers/scsi/wd719x.c index e3da1a2..2a9da2e 100644 --- a/drivers/scsi/wd719x.c +++ b/drivers/scsi/wd719x.c @@ -962,7 +962,7 @@ static void wd719x_pci_remove(struct pci_dev *pdev) scsi_host_put(sh); } -static DEFINE_PCI_DEVICE_TABLE(wd719x_pci_table) = { +static const struct pci_device_id wd719x_pci_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_WD, 0x3296) }, {} }; -- cgit v0.10.2 From 7e932159901183283cd82d797bc9a7c681e48e9c Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 1 Sep 2016 16:15:01 -0700 Subject: treewide: remove references to the now unnecessary DEFINE_PCI_DEVICE_TABLE It's been eliminated from the sources, remove it from everywhere else. Link: http://lkml.kernel.org/r/076eff466fd7edb550c25c8b25d76924ca0eba62.1472660229.git.joe@perches.com Signed-off-by: Joe Perches Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Cc: Bjorn Helgaas Cc: Andy Whitcroft Cc: Jonathan Corbet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/Documentation/PCI/pci.txt b/Documentation/PCI/pci.txt index 123881f..77f49dc 100644 --- a/Documentation/PCI/pci.txt +++ b/Documentation/PCI/pci.txt @@ -124,7 +124,6 @@ initialization with a pointer to a structure describing the driver The ID table is an array of struct pci_device_id entries ending with an all-zero entry. Definitions with static const are generally preferred. -Use of the deprecated macro DEFINE_PCI_DEVICE_TABLE should be avoided. Each entry consists of: diff --git a/include/linux/pci.h b/include/linux/pci.h index fbc1fa6..0ab8359 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -683,15 +683,6 @@ struct pci_driver { #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) /** - * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table - * @_table: device table name - * - * This macro is deprecated and should not be used in new code. - */ -#define DEFINE_PCI_DEVICE_TABLE(_table) \ - const struct pci_device_id _table[] - -/** * PCI_DEVICE - macro used to describe a specific pci device * @vend: the 16 bit PCI Vendor ID * @dev: the 16 bit PCI Device ID diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 4de3cc4..206a6b3 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3570,15 +3570,6 @@ sub process { } } -# check for uses of DEFINE_PCI_DEVICE_TABLE - if ($line =~ /\bDEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=/) { - if (WARN("DEFINE_PCI_DEVICE_TABLE", - "Prefer struct pci_device_id over deprecated DEFINE_PCI_DEVICE_TABLE\n" . $herecurr) && - $fix) { - $fixed[$fixlinenr] =~ s/\b(?:static\s+|)DEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=\s*/static const struct pci_device_id $1\[\] = /; - } - } - # check for new typedefs, only function parameters and sparse annotations # make sense. if ($line =~ /\btypedef\s/ && diff --git a/scripts/tags.sh b/scripts/tags.sh index ed7eef2..b3775a9 100755 --- a/scripts/tags.sh +++ b/scripts/tags.sh @@ -206,7 +206,6 @@ regex_c=( '/\ Date: Thu, 1 Sep 2016 16:15:04 -0700 Subject: printk/nmi: avoid direct printk()-s from __printk_nmi_flush() __printk_nmi_flush() can be called from nmi_panic(), therefore it has to test whether it's executed in NMI context and thus must route the messages through deferred printk() or via direct printk(). This is to avoid potential deadlocks, as described in commit cf9b1106c81c ("printk/nmi: flush NMI messages on the system panic"). However there remain two places where __printk_nmi_flush() does unconditional direct printk() calls: - pr_err("printk_nmi_flush: internal error ...") - pr_cont("\n") Factor out print_nmi_seq_line() parts into a new printk_nmi_flush_line() function, which takes care of in_nmi(), and use it in __printk_nmi_flush() for printing and error-reporting. Link: http://lkml.kernel.org/r/20160830161354.581-1-sergey.senozhatsky@gmail.com Signed-off-by: Sergey Senozhatsky Cc: Petr Mladek Cc: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/printk/nmi.c b/kernel/printk/nmi.c index b69eb8a..16bab47 100644 --- a/kernel/printk/nmi.c +++ b/kernel/printk/nmi.c @@ -99,27 +99,33 @@ again: return add; } -/* - * printk one line from the temporary buffer from @start index until - * and including the @end index. - */ -static void print_nmi_seq_line(struct nmi_seq_buf *s, int start, int end) +static void printk_nmi_flush_line(const char *text, int len) { - const char *buf = s->buffer + start; - /* * The buffers are flushed in NMI only on panic. The messages must * go only into the ring buffer at this stage. Consoles will get * explicitly called later when a crashdump is not generated. */ if (in_nmi()) - printk_deferred("%.*s", (end - start) + 1, buf); + printk_deferred("%.*s", len, text); else - printk("%.*s", (end - start) + 1, buf); + printk("%.*s", len, text); } /* + * printk one line from the temporary buffer from @start index until + * and including the @end index. + */ +static void printk_nmi_flush_seq_line(struct nmi_seq_buf *s, + int start, int end) +{ + const char *buf = s->buffer + start; + + printk_nmi_flush_line(buf, (end - start) + 1); +} + +/* * Flush data from the associated per_CPU buffer. The function * can be called either via IRQ work or independently. */ @@ -150,9 +156,11 @@ more: * the buffer an unexpected way. If we printed something then * @len must only increase. */ - if (i && i >= len) - pr_err("printk_nmi_flush: internal error: i=%d >= len=%zu\n", - i, len); + if (i && i >= len) { + const char *msg = "printk_nmi_flush: internal error\n"; + + printk_nmi_flush_line(msg, strlen(msg)); + } if (!len) goto out; /* Someone else has already flushed the buffer. */ @@ -166,14 +174,14 @@ more: /* Print line by line. */ for (; i < size; i++) { if (s->buffer[i] == '\n') { - print_nmi_seq_line(s, last_i, i); + printk_nmi_flush_seq_line(s, last_i, i); last_i = i + 1; } } /* Check if there was a partial line. */ if (last_i < size) { - print_nmi_seq_line(s, last_i, size - 1); - pr_cont("\n"); + printk_nmi_flush_seq_line(s, last_i, size - 1); + printk_nmi_flush_line("\n", strlen("\n")); } /* -- cgit v0.10.2 From c11600e4fed67ae4cd6a8096936afd445410e8ed Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 1 Sep 2016 16:15:07 -0700 Subject: mm, mempolicy: task->mempolicy must be NULL before dropping final reference KASAN allocates memory from the page allocator as part of kmem_cache_free(), and that can reference current->mempolicy through any number of allocation functions. It needs to be NULL'd out before the final reference is dropped to prevent a use-after-free bug: BUG: KASAN: use-after-free in alloc_pages_current+0x363/0x370 at addr ffff88010b48102c CPU: 0 PID: 15425 Comm: trinity-c2 Not tainted 4.8.0-rc2+ #140 ... Call Trace: dump_stack kasan_object_err kasan_report_error __asan_report_load2_noabort alloc_pages_current <-- use after free depot_save_stack save_stack kasan_slab_free kmem_cache_free __mpol_put <-- free do_exit This patch sets current->mempolicy to NULL before dropping the final reference. Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1608301442180.63329@chino.kir.corp.google.com Fixes: cd11016e5f52 ("mm, kasan: stackdepot implementation. Enable stackdepot for SLAB") Signed-off-by: David Rientjes Reported-by: Vegard Nossum Acked-by: Andrey Ryabinin Cc: Alexander Potapenko Cc: Dmitry Vyukov Cc: [4.6+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index 4429d25..5e5b296 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -195,6 +195,7 @@ static inline bool vma_migratable(struct vm_area_struct *vma) } extern int mpol_misplaced(struct page *, struct vm_area_struct *, unsigned long); +extern void mpol_put_task_policy(struct task_struct *); #else @@ -297,5 +298,8 @@ static inline int mpol_misplaced(struct page *page, struct vm_area_struct *vma, return -1; /* no node preference */ } +static inline void mpol_put_task_policy(struct task_struct *task) +{ +} #endif /* CONFIG_NUMA */ #endif diff --git a/kernel/exit.c b/kernel/exit.c index 2f974ae..091a78b 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -848,12 +848,7 @@ void do_exit(long code) TASKS_RCU(preempt_enable()); exit_notify(tsk, group_dead); proc_exit_connector(tsk); -#ifdef CONFIG_NUMA - task_lock(tsk); - mpol_put(tsk->mempolicy); - tsk->mempolicy = NULL; - task_unlock(tsk); -#endif + mpol_put_task_policy(tsk); #ifdef CONFIG_FUTEX if (unlikely(current->pi_state_cache)) kfree(current->pi_state_cache); diff --git a/mm/mempolicy.c b/mm/mempolicy.c index d8c4e38..2da72a5 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2336,6 +2336,23 @@ out: return ret; } +/* + * Drop the (possibly final) reference to task->mempolicy. It needs to be + * dropped after task->mempolicy is set to NULL so that any allocation done as + * part of its kmem_cache_free(), such as by KASAN, doesn't reference a freed + * policy. + */ +void mpol_put_task_policy(struct task_struct *task) +{ + struct mempolicy *pol; + + task_lock(task); + pol = task->mempolicy; + task->mempolicy = NULL; + task_unlock(task); + mpol_put(pol); +} + static void sp_delete(struct shared_policy *sp, struct sp_node *n) { pr_debug("deleting %lx-l%lx\n", n->start, n->end); -- cgit v0.10.2 From c4e297386bd1621b83f6f7d58a729fb770597a91 Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Thu, 1 Sep 2016 16:15:09 -0700 Subject: MAINTAINERS: Vladimir has moved vdavydov@{parallels,virtuozzo}.com will bounce from now on. Link: http://lkml.kernel.org/r/20160831180752.GB10353@esperanza Signed-off-by: Vladimir Davydov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/.mailmap b/.mailmap index 2a91c14..093a8ac 100644 --- a/.mailmap +++ b/.mailmap @@ -158,6 +158,8 @@ Valdis Kletnieks Viresh Kumar Viresh Kumar Viresh Kumar +Vladimir Davydov +Vladimir Davydov Takashi YOSHII Yusuke Goda Gustavo Padovan diff --git a/MAINTAINERS b/MAINTAINERS index 71aa5da..d44be8a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3247,7 +3247,7 @@ F: kernel/cpuset.c CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG) M: Johannes Weiner M: Michal Hocko -M: Vladimir Davydov +M: Vladimir Davydov L: cgroups@vger.kernel.org L: linux-mm@kvack.org S: Maintained -- cgit v0.10.2 From 735f2770a770156100f534646158cb58cb8b2939 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Thu, 1 Sep 2016 16:15:13 -0700 Subject: kernel/fork: fix CLONE_CHILD_CLEARTID regression in nscd Commit fec1d0115240 ("[PATCH] Disable CLONE_CHILD_CLEARTID for abnormal exit") has caused a subtle regression in nscd which uses CLONE_CHILD_CLEARTID to clear the nscd_certainly_running flag in the shared databases, so that the clients are notified when nscd is restarted. Now, when nscd uses a non-persistent database, clients that have it mapped keep thinking the database is being updated by nscd, when in fact nscd has created a new (anonymous) one (for non-persistent databases it uses an unlinked file as backend). The original proposal for the CLONE_CHILD_CLEARTID change claimed (https://lkml.org/lkml/2006/10/25/233): : The NPTL library uses the CLONE_CHILD_CLEARTID flag on clone() syscalls : on behalf of pthread_create() library calls. This feature is used to : request that the kernel clear the thread-id in user space (at an address : provided in the syscall) when the thread disassociates itself from the : address space, which is done in mm_release(). : : Unfortunately, when a multi-threaded process incurs a core dump (such as : from a SIGSEGV), the core-dumping thread sends SIGKILL signals to all of : the other threads, which then proceed to clear their user-space tids : before synchronizing in exit_mm() with the start of core dumping. This : misrepresents the state of process's address space at the time of the : SIGSEGV and makes it more difficult for someone to debug NPTL and glibc : problems (misleading him/her to conclude that the threads had gone away : before the fault). : : The fix below is to simply avoid the CLONE_CHILD_CLEARTID action if a : core dump has been initiated. The resulting patch from Roland (https://lkml.org/lkml/2006/10/26/269) seems to have a larger scope than the original patch asked for. It seems that limitting the scope of the check to core dumping should work for SIGSEGV issue describe above. [Changelog partly based on Andreas' description] Fixes: fec1d0115240 ("[PATCH] Disable CLONE_CHILD_CLEARTID for abnormal exit") Link: http://lkml.kernel.org/r/1471968749-26173-1-git-send-email-mhocko@kernel.org Signed-off-by: Michal Hocko Tested-by: William Preston Acked-by: Oleg Nesterov Cc: Roland McGrath Cc: Andreas Schwab Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/kernel/fork.c b/kernel/fork.c index aaf7823..93bdba1 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -913,14 +913,12 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm) deactivate_mm(tsk, mm); /* - * If we're exiting normally, clear a user-space tid field if - * requested. We leave this alone when dying by signal, to leave - * the value intact in a core dump, and to save the unnecessary - * trouble, say, a killed vfork parent shouldn't touch this mm. - * Userland only wants this done for a sys_exit. + * Signal userspace if we're not exiting with a core dump + * because we want to leave the value intact for debugging + * purposes. */ if (tsk->clear_child_tid) { - if (!(tsk->flags & PF_SIGNALED) && + if (!(tsk->signal->flags & SIGNAL_GROUP_COREDUMP) && atomic_read(&mm->mm_users) > 1) { /* * We don't check the error code - if userspace has -- cgit v0.10.2 From 1e1011af7a5725141aa4c8d30132acd93fe3da4e Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 1 Sep 2016 16:15:15 -0700 Subject: rapidio/documentation/mport_cdev: add missing parameter description Add missing description for rio_mport_cdev driver parameter 'dma_timeout'. This patch is applicable to kernel versions starting from v4.6. Link: http://lkml.kernel.org/r/20160901173104.2928-1-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/Documentation/rapidio/mport_cdev.txt b/Documentation/rapidio/mport_cdev.txt index 6e491a6..a53f786 100644 --- a/Documentation/rapidio/mport_cdev.txt +++ b/Documentation/rapidio/mport_cdev.txt @@ -80,6 +80,10 @@ functionality of their platform when planning to use this driver: III. Module parameters +- 'dma_timeout' - DMA transfer completion timeout (in msec, default value 3000). + This parameter set a maximum completion wait time for SYNC mode DMA + transfer requests and for RIO_WAIT_FOR_ASYNC ioctl requests. + - 'dbg_level' - This parameter allows to control amount of debug information generated by this device driver. This parameter is formed by set of bit masks that correspond to the specific functional blocks. -- cgit v0.10.2 From b30069291dc7f9b9a073c33d619818fe4a8e50de Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 1 Sep 2016 16:15:18 -0700 Subject: rapidio/tsi721: fix incorrect detection of address translation condition Fix incorrect condition to identify involvment of a address translation mechanism. This bug results in NULL pointer kernel crash dump in cases when mapping of inbound RapidIO address range is requested within existing aprture. Link: http://lkml.kernel.org/r/20160901173144.2983-1-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Cc: [4.6+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 32f0f01..9d19b9a 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -1161,7 +1161,7 @@ static int tsi721_rio_map_inb_mem(struct rio_mport *mport, dma_addr_t lstart, } else if (ibw_start < (ib_win->rstart + ib_win->size) && (ibw_start + ibw_size) > ib_win->rstart) { /* Return error if address translation involved */ - if (direct && ib_win->xlat) { + if (!direct || ib_win->xlat) { ret = -EFAULT; break; } -- cgit v0.10.2 From 635c223cfa05af9523146b2f37e119d945f449ae Mon Sep 17 00:00:00 2001 From: Gao Feng Date: Wed, 31 Aug 2016 14:15:05 +0800 Subject: rps: flow_dissector: Fix uninitialized flow_keys used in __skb_get_hash possibly The original codes depend on that the function parameters are evaluated from left to right. But the parameter's evaluation order is not defined in C standard actually. When flow_keys_have_l4(&keys) is invoked before ___skb_get_hash(skb, &keys, hashrnd) with some compilers or environment, the keys passed to flow_keys_have_l4 is not initialized. Fixes: 6db61d79c1e1 ("flow_dissector: Ignore flow dissector return value from ___skb_get_hash") Acked-by: Eric Dumazet Signed-off-by: Gao Feng Signed-off-by: David S. Miller diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 61ad43f..52742a0 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -680,11 +680,13 @@ EXPORT_SYMBOL_GPL(__skb_get_hash_symmetric); void __skb_get_hash(struct sk_buff *skb) { struct flow_keys keys; + u32 hash; __flow_hash_secret_init(); - __skb_set_sw_hash(skb, ___skb_get_hash(skb, &keys, hashrnd), - flow_keys_have_l4(&keys)); + hash = ___skb_get_hash(skb, &keys, hashrnd); + + __skb_set_sw_hash(skb, hash, flow_keys_have_l4(&keys)); } EXPORT_SYMBOL(__skb_get_hash); -- cgit v0.10.2 From b44e108b6f322eb5f20aa6eba39b468a1ffc10ff Mon Sep 17 00:00:00 2001 From: "Guilherme G. Piccoli" Date: Wed, 31 Aug 2016 12:11:57 -0300 Subject: bnx2x: don't reset chip on cleanup if PCI function is offline When PCI error is detected, in some architectures (like PowerPC) a slot reset is performed - the driver's error handlers are in charge of "disable" device before the reset, and re-enable it after a successful slot reset. There are two cases though that another path is taken on the code: if the slot reset is not successful or if too many errors already happened in the specific adapter (meaning that possibly the device is experiencing a HW failure that slot reset is not able to solve), the core PCI error mechanism (called EEH in PowerPC) will remove the adapter from the system, since it will consider this as a permanent failure on device. In this case, a path is taken that leads to bnx2x_chip_cleanup() calling bnx2x_reset_hw(), which then tries to perform a HW reset on chip. This reset won't succeed since the HW is in a fault state, which can be seen by multiple messages on kernel log like below: bnx2x: [bnx2x_issue_dmae_with_comp:552(eth1)]DMAE timeout! bnx2x: [bnx2x_write_dmae:600(eth1)]DMAE returned failure -1 After some time, the PCI error mechanism gives up on waiting the driver's correct removal procedure and forcibly remove the adapter from the system. We can see soft lockup while core PCI error mechanism is waiting for driver to accomplish the right removal process. This patch adds a verification to avoid a chip reset whenever the function is in PCI error state - since this case is only reached when we have a device being removed because of a permanent failure, the HW chip reset is not expected to work fine neither is necessary. Also, as a minor improvement in error path, we avoid the MCP information dump in case of non-recoverable PCI error (when adapter is about to be removed), since it will certainly fail. Reported-by: Harsha Thyagaraja Signed-off-by: Guilherme G. Piccoli Acked-By: Yuval Mintz Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index 97e8925..fa3386b 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -772,6 +772,11 @@ void bnx2x_fw_dump_lvl(struct bnx2x *bp, const char *lvl) (bp->common.bc_ver & 0xff00) >> 8, (bp->common.bc_ver & 0xff)); + if (pci_channel_offline(bp->pdev)) { + BNX2X_ERR("Cannot dump MCP info while in PCI error\n"); + return; + } + val = REG_RD(bp, MCP_REG_MCPR_CPU_PROGRAM_COUNTER); if (val == REG_RD(bp, MCP_REG_MCPR_CPU_PROGRAM_COUNTER)) BNX2X_ERR("%s" "MCP PC at 0x%x\n", lvl, val); @@ -9415,10 +9420,16 @@ unload_error: /* Release IRQs */ bnx2x_free_irq(bp); - /* Reset the chip */ - rc = bnx2x_reset_hw(bp, reset_code); - if (rc) - BNX2X_ERR("HW_RESET failed\n"); + /* Reset the chip, unless PCI function is offline. If we reach this + * point following a PCI error handling, it means device is really + * in a bad state and we're about to remove it, so reset the chip + * is not a good idea. + */ + if (!pci_channel_offline(bp->pdev)) { + rc = bnx2x_reset_hw(bp, reset_code); + if (rc) + BNX2X_ERR("HW_RESET failed\n"); + } /* Report UNLOAD_DONE to MCP */ bnx2x_send_unload_done(bp, keep_link); -- cgit v0.10.2 From ab34380162cbc9b5172afdadf5136643c687bb73 Mon Sep 17 00:00:00 2001 From: Eli Cooper Date: Fri, 26 Aug 2016 23:52:29 +0800 Subject: ipv6: Don't unset flowi6_proto in ipxip6_tnl_xmit() Commit 8eb30be0352d0916 ("ipv6: Create ip6_tnl_xmit") unsets flowi6_proto in ip4ip6_tnl_xmit() and ip6ip6_tnl_xmit(). Since xfrm_selector_match() relies on this info, IPv6 packets sent by an ip6tunnel cannot be properly selected by their protocols after removing it. This patch puts flowi6_proto back. Cc: stable@vger.kernel.org Fixes: 8eb30be0352d ("ipv6: Create ip6_tnl_xmit") Signed-off-by: Eli Cooper Signed-off-by: David S. Miller diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 7b0481e..888543d 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1174,6 +1174,7 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) encap_limit = t->parms.encap_limit; memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6)); + fl6.flowi6_proto = IPPROTO_IPIP; dsfield = ipv4_get_dsfield(iph); @@ -1233,6 +1234,7 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) encap_limit = t->parms.encap_limit; memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6)); + fl6.flowi6_proto = IPPROTO_IPV6; dsfield = ipv6_get_dsfield(ipv6h); if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS) -- cgit v0.10.2 From 08d072599234c959b0b82b63fa252c129225a899 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Fri, 2 Sep 2016 14:38:23 +0800 Subject: tick/nohz: Fix softlockup on scheduler stalls in kvm guest MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit tick_nohz_start_idle() is prevented to be called if the idle tick can't be stopped since commit 1f3b0f8243cb934 ("tick/nohz: Optimize nohz idle enter"). As a result, after suspend/resume the host machine, full dynticks kvm guest will softlockup: NMI watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [swapper/0:0] Call Trace: default_idle+0x31/0x1a0 arch_cpu_idle+0xf/0x20 default_idle_call+0x2a/0x50 cpu_startup_entry+0x39b/0x4d0 rest_init+0x138/0x140 ? rest_init+0x5/0x140 start_kernel+0x4c1/0x4ce ? set_init_arg+0x55/0x55 ? early_idt_handler_array+0x120/0x120 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x142/0x14f In addition, cat /proc/stat | grep cpu in guest or host: cpu 398 16 5049 15754 5490 0 1 46 0 0 cpu0 206 5 450 0 0 0 1 14 0 0 cpu1 81 0 3937 3149 1514 0 0 9 0 0 cpu2 45 6 332 6052 2243 0 0 11 0 0 cpu3 65 2 328 6552 1732 0 0 11 0 0 The idle and iowait states are weird 0 for cpu0(housekeeping). The bug is present in both guest and host kernels, and they both have cpu0's idle and iowait states issue, however, host kernel's suspend/resume path etc will touch watchdog to avoid the softlockup. - The watchdog will not be touched in tick_nohz_stop_idle path (need be touched since the scheduler stall is expected) if idle_active flags are not detected. - The idle and iowait states will not be accounted when exit idle loop (resched or interrupt) if idle start time and idle_active flags are not set. This patch fixes it by reverting commit 1f3b0f8243cb934 since can't stop idle tick doesn't mean can't be idle. Fixes: 1f3b0f8243cb934 ("tick/nohz: Optimize nohz idle enter") Signed-off-by: Wanpeng Li Cc: Sanjeev Yadav Cc: Gaurav Jindal Cc: stable@vger.kernel.org Cc: kvm@vger.kernel.org Cc: Radim Krčmář Cc: Peter Zijlstra Cc: Paolo Bonzini Link: http://lkml.kernel.org/r/1472798303-4154-1-git-send-email-wanpeng.li@hotmail.com Signed-off-by: Thomas Gleixner diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 204fdc8..2ec7c00 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -908,10 +908,11 @@ static void __tick_nohz_idle_enter(struct tick_sched *ts) ktime_t now, expires; int cpu = smp_processor_id(); + now = tick_nohz_start_idle(ts); + if (can_stop_idle_tick(cpu, ts)) { int was_stopped = ts->tick_stopped; - now = tick_nohz_start_idle(ts); ts->idle_calls++; expires = tick_nohz_stop_sched_tick(ts, now, cpu); -- cgit v0.10.2 From 11749e086b2766cccf6217a527ef5c5604ba069c Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Sun, 28 Aug 2016 10:13:07 +0200 Subject: ALSA: timer: fix NULL pointer dereference in read()/ioctl() race I got this with syzkaller: ================================================================== BUG: KASAN: null-ptr-deref on address 0000000000000020 Read of size 32 by task syz-executor/22519 CPU: 1 PID: 22519 Comm: syz-executor Not tainted 4.8.0-rc2+ #169 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2 014 0000000000000001 ffff880111a17a00 ffffffff81f9f141 ffff880111a17a90 ffff880111a17c50 ffff880114584a58 ffff880114584a10 ffff880111a17a80 ffffffff8161fe3f ffff880100000000 ffff880118d74a48 ffff880118d74a68 Call Trace: [] dump_stack+0x83/0xb2 [] kasan_report_error+0x41f/0x4c0 [] kasan_report+0x34/0x40 [] ? snd_timer_user_read+0x554/0x790 [] check_memory_region+0x13e/0x1a0 [] kasan_check_read+0x11/0x20 [] snd_timer_user_read+0x554/0x790 [] ? snd_timer_user_info_compat.isra.5+0x2b0/0x2b0 [] ? proc_fault_inject_write+0x1c1/0x250 [] ? next_tgid+0x2a0/0x2a0 [] ? do_group_exit+0x108/0x330 [] ? fsnotify+0x72a/0xca0 [] __vfs_read+0x10e/0x550 [] ? snd_timer_user_info_compat.isra.5+0x2b0/0x2b0 [] ? do_sendfile+0xc50/0xc50 [] ? __fsnotify_update_child_dentry_flags+0x60/0x60 [] ? kcov_ioctl+0x56/0x190 [] ? common_file_perm+0x2e2/0x380 [] ? __fsnotify_parent+0x5e/0x2b0 [] ? security_file_permission+0x86/0x1e0 [] ? rw_verify_area+0xe5/0x2b0 [] vfs_read+0x115/0x330 [] SyS_read+0xd1/0x1a0 [] ? vfs_write+0x4b0/0x4b0 [] ? __this_cpu_preempt_check+0x1c/0x20 [] ? __context_tracking_exit.part.4+0x3a/0x1e0 [] ? vfs_write+0x4b0/0x4b0 [] do_syscall_64+0x1c4/0x4e0 [] ? syscall_return_slowpath+0x16c/0x1d0 [] entry_SYSCALL64_slow_path+0x25/0x25 ================================================================== There are a couple of problems that I can see: - ioctl(SNDRV_TIMER_IOCTL_SELECT), which potentially sets tu->queue/tu->tqueue to NULL on memory allocation failure, so read() would get a NULL pointer dereference like the above splat - the same ioctl() can free tu->queue/to->tqueue which means read() could potentially see (and dereference) the freed pointer We can fix both by taking the ioctl_lock mutex when dereferencing ->queue/->tqueue, since that's always held over all the ioctl() code. Just looking at the code I find it likely that there are more problems here such as tu->qhead pointing outside the buffer if the size is changed concurrently using SNDRV_TIMER_IOCTL_PARAMS. Signed-off-by: Vegard Nossum Cc: Signed-off-by: Takashi Iwai diff --git a/sound/core/timer.c b/sound/core/timer.c index 2d6e3e7..2706061 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1972,6 +1972,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, tu->qused--; spin_unlock_irq(&tu->qlock); + mutex_lock(&tu->ioctl_lock); if (tu->tread) { if (copy_to_user(buffer, &tu->tqueue[qhead], sizeof(struct snd_timer_tread))) @@ -1981,6 +1982,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, sizeof(struct snd_timer_read))) err = -EFAULT; } + mutex_unlock(&tu->ioctl_lock); spin_lock_irq(&tu->qlock); if (err < 0) -- cgit v0.10.2 From 753246840d012ae34ea80a1d40bc1546c62fb957 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sat, 27 Aug 2016 16:19:49 +0000 Subject: drivers/perf: arm_pmu: Fix leak in error path In case of a IRQ type mismatch in of_pmu_irq_cfg() the device node for interrupt affinity isn't freed. So fix this issue by calling of_node_put(). Signed-off-by: Stefan Wahren Fixes: fa8ad7889d83 ("arm: perf: factor arm_pmu core out to drivers") Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index c494613..1b48bf0 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -925,6 +925,7 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu) if (i > 0 && spi != using_spi) { pr_err("PPI/SPI IRQ type mismatch for %s!\n", dn->name); + of_node_put(dn); kfree(irqs); return -EINVAL; } -- cgit v0.10.2 From 63fb0a9516b2c4e23293d7253c14c40aa9c2b7d1 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sat, 27 Aug 2016 16:19:50 +0000 Subject: drivers/perf: arm_pmu: Fix NULL pointer dereference during probe Patch 7f1d642fbb5c ("drivers/perf: arm-pmu: Fix handling of SPI lacking interrupt-affinity property") unintended also fixes perf_event support for bcm2835 which doesn't have PMU interrupts. Unfortunately this change introduce a NULL pointer dereference on bcm2835, because irq_is_percpu always expected to be called with a valid IRQ. So fix this regression by validating the IRQ before. Tested-by: Kevin Hilman Signed-off-by: Stefan Wahren Fixes: 7f1d642fbb5c ("drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property") Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 1b48bf0..f5e1008 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -970,7 +970,7 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu) if (cpumask_weight(&pmu->supported_cpus) == 0) { int irq = platform_get_irq(pdev, 0); - if (irq_is_percpu(irq)) { + if (irq >= 0 && irq_is_percpu(irq)) { /* If using PPIs, check the affinity of the partition */ int ret; -- cgit v0.10.2 From 744c6c37cc18705d19e179622f927f5b781fe9cc Mon Sep 17 00:00:00 2001 From: James Morse Date: Fri, 26 Aug 2016 16:03:42 +0100 Subject: arm64: kernel: Fix unmasked debug exceptions when restoring mdscr_el1 Changes to make the resume from cpu_suspend() code behave more like secondary boot caused debug exceptions to be unmasked early by __cpu_setup(). We then go on to restore mdscr_el1 in cpu_do_resume(), potentially taking break or watch points based on uninitialised registers. Mask debug exceptions in cpu_do_resume(), which is specific to resume from cpu_suspend(). Debug exceptions will be restored to their original state by local_dbg_restore() in cpu_suspend(), which runs after hw_breakpoint_restore() has re-initialised the other registers. Reported-by: Lorenzo Pieralisi Fixes: cabe1c81ea5b ("arm64: Change cpu_resume() to enable mmu early then access sleep_sp by va") Cc: # 4.7+ Signed-off-by: James Morse Acked-by: Will Deacon Signed-off-by: Catalin Marinas diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 5bb61de..9d37e96 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -100,7 +100,16 @@ ENTRY(cpu_do_resume) msr tcr_el1, x8 msr vbar_el1, x9 + + /* + * __cpu_setup() cleared MDSCR_EL1.MDE and friends, before unmasking + * debug exceptions. By restoring MDSCR_EL1 here, we may take a debug + * exception. Mask them until local_dbg_restore() in cpu_suspend() + * resets them. + */ + disable_dbg msr mdscr_el1, x10 + msr sctlr_el1, x12 /* * Restore oslsr_el1 by writing oslar_el1 -- cgit v0.10.2 From db7b542e4a789156a4fb61278f2074795fe2eb9c Mon Sep 17 00:00:00 2001 From: Miaoqing Pan Date: Thu, 4 Aug 2016 15:48:34 +0800 Subject: ath9k: fix AR5416 access GPIO warning The warning was seen on AR5416 chip, which invoke ath9k_hw_gio_get() before the GPIO initialized correctly. WARNING: CPU: 1 PID: 1159 at ~/drivers/net/wireless/ath/ath9k/hw.c:2776 ath9k_hw_gpio_get+0x148/0x1a0 [ath9k_hw] ... CPU: 1 PID: 1159 Comm: systemd-udevd Not tainted 4.7.0-rc7-aptosid-amd64 #1 aptosid 4.7~rc7-1~git92.slh.3 Hardware name: /DH67CL, BIOS BLH6710H.86A.0160.2012.1204.1156 12/04/2012 0000000000000286 00000000f912d633 ffffffff81290fd3 0000000000000000 0000000000000000 ffffffff81063fd4 ffff88040c6dc018 0000000000000000 0000000000000002 0000000000000000 0000000000000100 ffff88040c6dc018 Call Trace: [] ? dump_stack+0x5c/0x79 [] ? __warn+0xb4/0xd0 [] ? ath9k_hw_gpio_get+0x148/0x1a0 [ath9k_hw] Signed-off-by: Miaoqing Pan Reported-by: Stefan Lippers-Hollmann Tested-by: Stefan Lippers-Hollmann Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index d1d0c06..14b13f0 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -2482,6 +2482,8 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah) return -EINVAL; } + ath9k_gpio_cap_init(ah); + if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah) || @@ -2531,8 +2533,6 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah) else pCap->hw_caps &= ~ATH9K_HW_CAP_HT; - ath9k_gpio_cap_init(ah); - if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah)) pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX; else -- cgit v0.10.2 From 15301a570754c7af60335d094dd2d1808b0641a5 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 25 May 2016 13:47:26 -0400 Subject: x86/paravirt: Do not trace _paravirt_ident_*() functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Łukasz Daniluk reported that on a RHEL kernel that his machine would lock up after enabling function tracer. I asked him to bisect the functions within available_filter_functions, which he did and it came down to three: _paravirt_nop(), _paravirt_ident_32() and _paravirt_ident_64() It was found that this is only an issue when noreplace-paravirt is added to the kernel command line. This means that those functions are most likely called within critical sections of the funtion tracer, and must not be traced. In newer kenels _paravirt_nop() is defined within gcc asm(), and is no longer an issue. But both _paravirt_ident_{32,64}() causes the following splat when they are traced: mm/pgtable-generic.c:33: bad pmd ffff8800d2435150(0000000001d00054) mm/pgtable-generic.c:33: bad pmd ffff8800d3624190(0000000001d00070) mm/pgtable-generic.c:33: bad pmd ffff8800d36a5110(0000000001d00054) mm/pgtable-generic.c:33: bad pmd ffff880118eb1450(0000000001d00054) NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [systemd-journal:469] Modules linked in: e1000e CPU: 2 PID: 469 Comm: systemd-journal Not tainted 4.6.0-rc4-test+ #513 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v02.05 05/07/2012 task: ffff880118f740c0 ti: ffff8800d4aec000 task.ti: ffff8800d4aec000 RIP: 0010:[] [] queued_spin_lock_slowpath+0x118/0x1a0 RSP: 0018:ffff8800d4aefb90 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88011eb16d40 RDX: ffffffff82485760 RSI: 000000001f288820 RDI: ffffea0000008030 RBP: ffff8800d4aefb90 R08: 00000000000c0000 R09: 0000000000000000 R10: ffffffff821c8e0e R11: 0000000000000000 R12: ffff880000200fb8 R13: 00007f7a4e3f7000 R14: ffffea000303f600 R15: ffff8800d4b562e0 FS: 00007f7a4e3d7840(0000) GS:ffff88011eb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7a4e3f7000 CR3: 00000000d3e71000 CR4: 00000000001406e0 Call Trace: _raw_spin_lock+0x27/0x30 handle_pte_fault+0x13db/0x16b0 handle_mm_fault+0x312/0x670 __do_page_fault+0x1b1/0x4e0 do_page_fault+0x22/0x30 page_fault+0x28/0x30 __vfs_read+0x28/0xe0 vfs_read+0x86/0x130 SyS_read+0x46/0xa0 entry_SYSCALL_64_fastpath+0x1e/0xa8 Code: 12 48 c1 ea 0c 83 e8 01 83 e2 30 48 98 48 81 c2 40 6d 01 00 48 03 14 c5 80 6a 5d 82 48 89 0a 8b 41 08 85 c0 75 09 f3 90 8b 41 08 <85> c0 74 f7 4c 8b 09 4d 85 c9 74 08 41 0f 18 09 eb 02 f3 90 8b Reported-by: Łukasz Daniluk Signed-off-by: Steven Rostedt Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index ad5bc95..1acfd76 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -56,12 +56,12 @@ asm (".pushsection .entry.text, \"ax\"\n" ".popsection"); /* identity function, which can be inlined */ -u32 _paravirt_ident_32(u32 x) +u32 notrace _paravirt_ident_32(u32 x) { return x; } -u64 _paravirt_ident_64(u64 x) +u64 notrace _paravirt_ident_64(u64 x) { return x; } -- cgit v0.10.2 From fffd68734dc685e208e86d8c5f6522cd695a8d60 Mon Sep 17 00:00:00 2001 From: Christophe Jaillet Date: Fri, 26 Aug 2016 07:16:17 +0200 Subject: IB/mlx5: Fix the size parameter to find_first_bit The 2nd parameter of 'find_first_bit' is the number of bits to search. In this case, we are passing 'sizeof(tmp)' which is likely to be 4 or 8 because 'tmp' is an 'unsigned long'. It is likely that the number of bits of 'tmp' was expected here. So use BITS_PER_LONG instead. It has been spotted by the following coccinelle script: @@ expression ret, x; @@ * ret = \(find_first_bit \| find_first_zero_bit\) (x, sizeof(...)); Signed-off-by: Christophe JAILLET Acked-by: Majd Dibbiny Acked-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c index 40df2cc..996b54e 100644 --- a/drivers/infiniband/hw/mlx5/mem.c +++ b/drivers/infiniband/hw/mlx5/mem.c @@ -71,7 +71,7 @@ void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift, addr = addr >> page_shift; tmp = (unsigned long)addr; - m = find_first_bit(&tmp, sizeof(tmp)); + m = find_first_bit(&tmp, BITS_PER_LONG); skip = 1 << m; mask = skip - 1; i = 0; @@ -81,7 +81,7 @@ void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift, for (k = 0; k < len; k++) { if (!(i & mask)) { tmp = (unsigned long)pfn; - m = min_t(unsigned long, m, find_first_bit(&tmp, sizeof(tmp))); + m = min_t(unsigned long, m, find_first_bit(&tmp, BITS_PER_LONG)); skip = 1 << m; mask = skip - 1; base = pfn; @@ -89,7 +89,7 @@ void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift, } else { if (base + p != pfn) { tmp = (unsigned long)p; - m = find_first_bit(&tmp, sizeof(tmp)); + m = find_first_bit(&tmp, BITS_PER_LONG); skip = 1 << m; mask = skip - 1; base = pfn; -- cgit v0.10.2 From 6aaa382f1267644072f288916476879684502f73 Mon Sep 17 00:00:00 2001 From: Christophe Jaillet Date: Fri, 26 Aug 2016 06:49:09 +0200 Subject: IB/hfi1: Fix the size parameter to find_first_bit The 2nd parameter of 'find_first_bit' is the number of bits to search. In this case, we are passing 'sizeof(u64)' which is 8. It is likely that the number of bits of 'port_mask' was expected here. Use sizeof() * 8 to get the correct number. It has been spotted by the following coccinelle script: @@ expression ret, x; @@ * ret = \(find_first_bit \| find_first_zero_bit\) (x, sizeof(...)); Signed-off-by: Christophe JAILLET Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c index 9912d2c..7ffc14f 100644 --- a/drivers/infiniband/hw/hfi1/mad.c +++ b/drivers/infiniband/hw/hfi1/mad.c @@ -2638,7 +2638,7 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp, */ port_mask = be64_to_cpu(req->port_select_mask[3]); port_num = find_first_bit((unsigned long *)&port_mask, - sizeof(port_mask)); + sizeof(port_mask) * 8); if (port_num != port) { pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; @@ -2842,7 +2842,7 @@ static int pma_get_opa_porterrors(struct opa_pma_mad *pmp, */ port_mask = be64_to_cpu(req->port_select_mask[3]); port_num = find_first_bit((unsigned long *)&port_mask, - sizeof(port_mask)); + sizeof(port_mask) * 8); if (port_num != port) { pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; @@ -3015,7 +3015,7 @@ static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp, */ port_mask = be64_to_cpu(req->port_select_mask[3]); port_num = find_first_bit((unsigned long *)&port_mask, - sizeof(port_mask)); + sizeof(port_mask) * 8); if (port_num != port) { pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; @@ -3252,7 +3252,7 @@ static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp, */ port_mask = be64_to_cpu(req->port_select_mask[3]); port_num = find_first_bit((unsigned long *)&port_mask, - sizeof(port_mask)); + sizeof(port_mask) * 8); if (port_num != port) { pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; -- cgit v0.10.2 From 63b268d232b869dfbc92e49c77f7e0648e1d039c Mon Sep 17 00:00:00 2001 From: Raju Rangoju Date: Mon, 29 Aug 2016 17:15:49 +0530 Subject: IB/isert: Properly release resources on DEVICE_REMOVAL When the low level driver exercises the hot unplug they would call rdma_cm cma_remove_one which would fire DEVICE_REMOVAL event to all cma consumers. Now, if consumer doesn't make sure they destroy all IB objects created on that IB device instance prior to finalizing all processing of DEVICE_REMOVAL callback, rdma_cm will let the lld to de-register with IB core and destroy the IB device instance. And if the consumer calls (say) ib_dereg_mr(), it will crash since that dev object is NULL. In the current implementation, iser-target just initiates the cleanup and returns from DEVICE_REMOVAL callback. This deferred work creates a race between iser-target cleaning IB objects(say MR) and lld destroying IB device instance. This patch includes the following fixes -> make sure that consumer frees all IB objects associated with device instance -> return non-zero from the callback to destroy the rdma_cm id Signed-off-by: Raju Rangoju Acked-by: Sagi Grimberg Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 7914c14..cae9bbc 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -403,6 +403,7 @@ isert_init_conn(struct isert_conn *isert_conn) INIT_LIST_HEAD(&isert_conn->node); init_completion(&isert_conn->login_comp); init_completion(&isert_conn->login_req_comp); + init_waitqueue_head(&isert_conn->rem_wait); kref_init(&isert_conn->kref); mutex_init(&isert_conn->mutex); INIT_WORK(&isert_conn->release_work, isert_release_work); @@ -578,7 +579,8 @@ isert_connect_release(struct isert_conn *isert_conn) BUG_ON(!device); isert_free_rx_descriptors(isert_conn); - if (isert_conn->cm_id) + if (isert_conn->cm_id && + !isert_conn->dev_removed) rdma_destroy_id(isert_conn->cm_id); if (isert_conn->qp) { @@ -593,7 +595,10 @@ isert_connect_release(struct isert_conn *isert_conn) isert_device_put(device); - kfree(isert_conn); + if (isert_conn->dev_removed) + wake_up_interruptible(&isert_conn->rem_wait); + else + kfree(isert_conn); } static void @@ -753,6 +758,7 @@ static int isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) { struct isert_np *isert_np = cma_id->context; + struct isert_conn *isert_conn; int ret = 0; isert_info("%s (%d): status %d id %p np %p\n", @@ -773,10 +779,21 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) break; case RDMA_CM_EVENT_ADDR_CHANGE: /* FALLTHRU */ case RDMA_CM_EVENT_DISCONNECTED: /* FALLTHRU */ - case RDMA_CM_EVENT_DEVICE_REMOVAL: /* FALLTHRU */ case RDMA_CM_EVENT_TIMEWAIT_EXIT: /* FALLTHRU */ ret = isert_disconnected_handler(cma_id, event->event); break; + case RDMA_CM_EVENT_DEVICE_REMOVAL: + isert_conn = cma_id->qp->qp_context; + isert_conn->dev_removed = true; + isert_disconnected_handler(cma_id, event->event); + wait_event_interruptible(isert_conn->rem_wait, + isert_conn->state == ISER_CONN_DOWN); + kfree(isert_conn); + /* + * return non-zero from the callback to destroy + * the rdma cm id + */ + return 1; case RDMA_CM_EVENT_REJECTED: /* FALLTHRU */ case RDMA_CM_EVENT_UNREACHABLE: /* FALLTHRU */ case RDMA_CM_EVENT_CONNECT_ERROR: diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index fc791ef..c02ada5 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -158,6 +158,8 @@ struct isert_conn { struct work_struct release_work; bool logout_posted; bool snd_w_inv; + wait_queue_head_t rem_wait; + bool dev_removed; }; #define ISERT_MAX_CQ 64 -- cgit v0.10.2 From 656aacea6c90ce8e15c2bdef4f89b74b73e2e34a Mon Sep 17 00:00:00 2001 From: Baoyou Xie Date: Sun, 28 Aug 2016 22:57:11 +0800 Subject: IB/cxgb4: Make _free_qp static to silence build warning We get 1 warning when build kernel with W=1: drivers/infiniband/hw/cxgb4/qp.c:686:6: warning: no previous prototype for '_free_qp' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. so this patch marks it 'static'. Signed-off-by: Baoyou Xie Reviewed-by: Yuval Shaia Reviewed-by: Leon Romanovsky Acked-by: Steve Wise Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index edb1172..6904352 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -683,7 +683,7 @@ static int build_inv_stag(union t4_wr *wqe, struct ib_send_wr *wr, return 0; } -void _free_qp(struct kref *kref) +static void _free_qp(struct kref *kref) { struct c4iw_qp *qhp; -- cgit v0.10.2 From 68c6bcdd8bd00394c234b915ab9b97c74104130c Mon Sep 17 00:00:00 2001 From: Erez Shitrit Date: Sun, 28 Aug 2016 10:58:30 +0300 Subject: IB/core: Fix use after free in send_leave function The function send_leave sets the member: group->query_id (group->query_id = ret) after calling the sa_query, but leave_handler can be executed before the setting and it might delete the group object, and will get a memory corruption. Additionally, this patch gets rid of group->query_id variable which is not used. Fixes: faec2f7b96b5 ('IB/sa: Track multicast join/leave requests') Signed-off-by: Erez Shitrit Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c index 3a3c5d7..51c79b2 100644 --- a/drivers/infiniband/core/multicast.c +++ b/drivers/infiniband/core/multicast.c @@ -106,7 +106,6 @@ struct mcast_group { atomic_t refcount; enum mcast_group_state state; struct ib_sa_query *query; - int query_id; u16 pkey_index; u8 leave_state; int retries; @@ -340,11 +339,7 @@ static int send_join(struct mcast_group *group, struct mcast_member *member) member->multicast.comp_mask, 3000, GFP_KERNEL, join_handler, group, &group->query); - if (ret >= 0) { - group->query_id = ret; - ret = 0; - } - return ret; + return (ret > 0) ? 0 : ret; } static int send_leave(struct mcast_group *group, u8 leave_state) @@ -364,11 +359,7 @@ static int send_leave(struct mcast_group *group, u8 leave_state) IB_SA_MCMEMBER_REC_JOIN_STATE, 3000, GFP_KERNEL, leave_handler, group, &group->query); - if (ret >= 0) { - group->query_id = ret; - ret = 0; - } - return ret; + return (ret > 0) ? 0 : ret; } static void join_group(struct mcast_group *group, struct mcast_member *member, -- cgit v0.10.2 From 546481c2816ea3c061ee9d5658eb48070f69212e Mon Sep 17 00:00:00 2001 From: Erez Shitrit Date: Sun, 28 Aug 2016 10:58:31 +0300 Subject: IB/ipoib: Fix memory corruption in ipoib cm mode connect flow When a new CM connection is being requested, ipoib driver copies data from the path pointer in the CM/tx object, the path object might be invalid at the point and memory corruption will happened later when now the CM driver will try using that data. The next scenario demonstrates it: neigh_add_path --> ipoib_cm_create_tx --> queue_work (pointer to path is in the cm/tx struct) #while the work is still in the queue, #the port goes down and causes the ipoib_flush_paths: ipoib_flush_paths --> path_free --> kfree(path) #at this point the work scheduled starts. ipoib_cm_tx_start --> copy from the (invalid)path pointer: (memcpy(&pathrec, &p->path->pathrec, sizeof pathrec);) -> memory corruption. To fix that the driver now starts the CM/tx connection only if that specific path exists in the general paths database. This check is protected with the relevant locks, and uses the gid from the neigh member in the CM/tx object which is valid according to the ref count that was taken by the CM/tx. Fixes: 839fcaba35 ('IPoIB: Connected mode experimental support') Signed-off-by: Erez Shitrit Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index 4f7d9b4..9dbfcc0 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -478,6 +478,7 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_ah *address, u32 qpn); void ipoib_reap_ah(struct work_struct *work); +struct ipoib_path *__path_find(struct net_device *dev, void *gid); void ipoib_mark_paths_invalid(struct net_device *dev); void ipoib_flush_paths(struct net_device *dev); int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c index 951d9ab..4ad297d 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c @@ -1318,6 +1318,8 @@ void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) } } +#define QPN_AND_OPTIONS_OFFSET 4 + static void ipoib_cm_tx_start(struct work_struct *work) { struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, @@ -1326,6 +1328,7 @@ static void ipoib_cm_tx_start(struct work_struct *work) struct ipoib_neigh *neigh; struct ipoib_cm_tx *p; unsigned long flags; + struct ipoib_path *path; int ret; struct ib_sa_path_rec pathrec; @@ -1338,7 +1341,19 @@ static void ipoib_cm_tx_start(struct work_struct *work) p = list_entry(priv->cm.start_list.next, typeof(*p), list); list_del_init(&p->list); neigh = p->neigh; + qpn = IPOIB_QPN(neigh->daddr); + /* + * As long as the search is with these 2 locks, + * path existence indicates its validity. + */ + path = __path_find(dev, neigh->daddr + QPN_AND_OPTIONS_OFFSET); + if (!path) { + pr_info("%s ignore not valid path %pI6\n", + __func__, + neigh->daddr + QPN_AND_OPTIONS_OFFSET); + goto free_neigh; + } memcpy(&pathrec, &p->path->pathrec, sizeof pathrec); spin_unlock_irqrestore(&priv->lock, flags); @@ -1350,6 +1365,7 @@ static void ipoib_cm_tx_start(struct work_struct *work) spin_lock_irqsave(&priv->lock, flags); if (ret) { +free_neigh: neigh = p->neigh; if (neigh) { neigh->cm = NULL; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 74bcaa0..cc1c1b0 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -485,7 +485,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf) return -EINVAL; } -static struct ipoib_path *__path_find(struct net_device *dev, void *gid) +struct ipoib_path *__path_find(struct net_device *dev, void *gid) { struct ipoib_dev_priv *priv = netdev_priv(dev); struct rb_node *n = priv->path_tree.rb_node; -- cgit v0.10.2 From 25b64fc5f2c0779b53ec155d69cc06b7cdc6e99f Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Sun, 28 Aug 2016 10:58:32 +0300 Subject: Revert "IB/mlx4: Return EAGAIN for any error in mlx4_ib_poll_one" By Mellanox HW design and SW implementation, poll_cq never fails and returns errors, so all these printks are to catch ULP bugs. In case of such bug, the reverted patch will cause reentry of the function, resulting in a printk storm. This reverts commit 5412352fcd8f ("IB/mlx4: Return EAGAIN for any error in mlx4_ib_poll_one") Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 006db64..15b6289 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -690,7 +690,7 @@ repoll: if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_OPCODE_NOP && is_send)) { pr_warn("Completion for NOP opcode detected!\n"); - return -EAGAIN; + return -EINVAL; } /* Resize CQ in progress */ @@ -721,7 +721,7 @@ repoll: if (unlikely(!mqp)) { pr_warn("CQ %06x with entry for unknown QPN %06x\n", cq->mcq.cqn, be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK); - return -EAGAIN; + return -EINVAL; } *cur_qp = to_mibqp(mqp); @@ -739,7 +739,7 @@ repoll: if (unlikely(!msrq)) { pr_warn("CQ %06x with entry for unknown SRQN %06x\n", cq->mcq.cqn, srq_num); - return -EAGAIN; + return -EINVAL; } } -- cgit v0.10.2 From 20697434b6ea9c6d895ebc5217a46f18850a109f Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Sun, 28 Aug 2016 10:58:33 +0300 Subject: IB/mlx4: Don't return errors from poll_cq Remove returning errors from mlx4 poll_cq function. Polling CQ operation in kernel never fails by Mellanox HCA architecture and respective driver design. Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 15b6289..5df63da 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -687,12 +687,6 @@ repoll: is_error = (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_CQE_OPCODE_ERROR; - if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_OPCODE_NOP && - is_send)) { - pr_warn("Completion for NOP opcode detected!\n"); - return -EINVAL; - } - /* Resize CQ in progress */ if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_CQE_OPCODE_RESIZE)) { if (cq->resize_buf) { @@ -718,12 +712,6 @@ repoll: */ mqp = __mlx4_qp_lookup(to_mdev(cq->ibcq.device)->dev, be32_to_cpu(cqe->vlan_my_qpn)); - if (unlikely(!mqp)) { - pr_warn("CQ %06x with entry for unknown QPN %06x\n", - cq->mcq.cqn, be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK); - return -EINVAL; - } - *cur_qp = to_mibqp(mqp); } @@ -736,11 +724,6 @@ repoll: /* SRQ is also in the radix tree */ msrq = mlx4_srq_lookup(to_mdev(cq->ibcq.device)->dev, srq_num); - if (unlikely(!msrq)) { - pr_warn("CQ %06x with entry for unknown SRQN %06x\n", - cq->mcq.cqn, srq_num); - return -EINVAL; - } } if (is_send) { @@ -891,7 +874,6 @@ int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) struct mlx4_ib_qp *cur_qp = NULL; unsigned long flags; int npolled; - int err = 0; struct mlx4_ib_dev *mdev = to_mdev(cq->ibcq.device); spin_lock_irqsave(&cq->lock, flags); @@ -901,8 +883,7 @@ int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) } for (npolled = 0; npolled < num_entries; ++npolled) { - err = mlx4_ib_poll_one(cq, &cur_qp, wc + npolled); - if (err) + if (mlx4_ib_poll_one(cq, &cur_qp, wc + npolled)) break; } @@ -911,10 +892,7 @@ int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) out: spin_unlock_irqrestore(&cq->lock, flags); - if (err == 0 || err == -EAGAIN) - return npolled; - else - return err; + return npolled; } int mlx4_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) -- cgit v0.10.2 From 24be409beede1a7cbe95b1740c4cdade3b6a8187 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sun, 28 Aug 2016 10:58:34 +0300 Subject: IB/mlx5: Return EINVAL when caller specifies too many SGEs The returned value should be EINVAL, because it is caused by wrong caller and not by internal overflow event. Signed-off-by: Chuck Lever Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 0dd7d93..acb3b72 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -3758,7 +3758,7 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, num_sge = wr->num_sge; if (unlikely(num_sge > qp->sq.max_gs)) { mlx5_ib_warn(dev, "\n"); - err = -ENOMEM; + err = -EINVAL; *bad_wr = wr; goto out; } -- cgit v0.10.2 From b2a232d21f301d600b02c6f9ccbc9f977331bb39 Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Sun, 28 Aug 2016 10:58:35 +0300 Subject: IB/mlx5: Simplify code by removing return variable Return variable was set in a line before the actual return was called in begin_wqe function. This patch removes such variable and simplifies the code. Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index acb3b72..174d09b 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -3658,12 +3658,8 @@ static int begin_wqe(struct mlx5_ib_qp *qp, void **seg, struct ib_send_wr *wr, unsigned *idx, int *size, int nreq) { - int err = 0; - - if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) { - err = -ENOMEM; - return err; - } + if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) + return -ENOMEM; *idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1); *seg = mlx5_get_send_wqe(qp, *idx); @@ -3679,7 +3675,7 @@ static int begin_wqe(struct mlx5_ib_qp *qp, void **seg, *seg += sizeof(**ctrl); *size = sizeof(**ctrl) / 16; - return err; + return 0; } static void finish_wqe(struct mlx5_ib_qp *qp, -- cgit v0.10.2 From d9f88e5ab9a73058ebdde589219c0d37da250f06 Mon Sep 17 00:00:00 2001 From: Yishai Hadas Date: Sun, 28 Aug 2016 10:58:37 +0300 Subject: IB/mlx5: Use TIR number based on selector Use TIR number based on selector, it should be done to differentiate between RSS QP to RAW one. Reported-by: Sagi Grimberg Signed-off-by: Yishai Hadas Signed-off-by: Leon Romanovsky Tested-by: Sagi Grimberg Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 1b4094b..8150ea3 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1849,6 +1849,7 @@ static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp, int domain) { struct mlx5_ib_dev *dev = to_mdev(qp->device); + struct mlx5_ib_qp *mqp = to_mqp(qp); struct mlx5_ib_flow_handler *handler = NULL; struct mlx5_flow_destination *dst = NULL; struct mlx5_ib_flow_prio *ft_prio; @@ -1875,7 +1876,10 @@ static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp, } dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR; - dst->tir_num = to_mqp(qp)->raw_packet_qp.rq.tirn; + if (mqp->flags & MLX5_IB_QP_RSS) + dst->tir_num = mqp->rss_qp.tirn; + else + dst->tir_num = mqp->raw_packet_qp.rq.tirn; if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) { diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 372385d..95146f4 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -402,6 +402,7 @@ enum mlx5_ib_qp_flags { /* QP uses 1 as its source QP number */ MLX5_IB_QP_SQPN_QP1 = 1 << 6, MLX5_IB_QP_CAP_SCATTER_FCS = 1 << 7, + MLX5_IB_QP_RSS = 1 << 8, }; struct mlx5_umr_wr { diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 174d09b..affc3f6 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -1449,6 +1449,7 @@ create_tir: kvfree(in); /* qpn is reserved for that QP */ qp->trans_qp.base.mqp.qpn = 0; + qp->flags |= MLX5_IB_QP_RSS; return 0; err: -- cgit v0.10.2 From dbdf7d4e7f911f79ceb08365a756bbf6eecac81c Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Sun, 28 Aug 2016 10:58:38 +0300 Subject: IB/mlx5: Don't return errors from poll_cq Remove returning errors from mlx5 poll_cq function. Polling CQ operation in kernel never fails by Mellanox HCA architecture and respective driver design. Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c index 308a358..e4fac929 100644 --- a/drivers/infiniband/hw/mlx5/cq.c +++ b/drivers/infiniband/hw/mlx5/cq.c @@ -553,12 +553,6 @@ repoll: * from the table. */ mqp = __mlx5_qp_lookup(dev->mdev, qpn); - if (unlikely(!mqp)) { - mlx5_ib_warn(dev, "CQE@CQ %06x for unknown QPN %6x\n", - cq->mcq.cqn, qpn); - return -EINVAL; - } - *cur_qp = to_mibqp(mqp); } @@ -619,13 +613,6 @@ repoll: read_lock(&dev->mdev->priv.mkey_table.lock); mmkey = __mlx5_mr_lookup(dev->mdev, mlx5_base_mkey(be32_to_cpu(sig_err_cqe->mkey))); - if (unlikely(!mmkey)) { - read_unlock(&dev->mdev->priv.mkey_table.lock); - mlx5_ib_warn(dev, "CQE@CQ %06x for unknown MR %6x\n", - cq->mcq.cqn, be32_to_cpu(sig_err_cqe->mkey)); - return -EINVAL; - } - mr = to_mibmr(mmkey); get_sig_err_item(sig_err_cqe, &mr->sig->err_item); mr->sig->sig_err_exists = true; @@ -676,7 +663,6 @@ int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) unsigned long flags; int soft_polled = 0; int npolled; - int err = 0; spin_lock_irqsave(&cq->lock, flags); if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { @@ -688,8 +674,7 @@ int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) soft_polled = poll_soft_wc(cq, num_entries, wc); for (npolled = 0; npolled < num_entries - soft_polled; npolled++) { - err = mlx5_poll_one(cq, &cur_qp, wc + soft_polled + npolled); - if (err) + if (mlx5_poll_one(cq, &cur_qp, wc + soft_polled + npolled)) break; } @@ -698,10 +683,7 @@ int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) out: spin_unlock_irqrestore(&cq->lock, flags); - if (err == 0 || err == -EAGAIN) - return soft_polled + npolled; - else - return err; + return soft_polled + npolled; } int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) -- cgit v0.10.2 From 3e6c3b0fd5d071ed17bf91586aae35a6cfb8cdb3 Mon Sep 17 00:00:00 2001 From: Sebastian Sanchez Date: Wed, 31 Aug 2016 07:24:20 -0700 Subject: IB/hfi1: Fix SGE length for misaligned PIO copy When trying to align the source pointer and there's a byte carry in an SGE copy, bytes are borrowed from the next quad-word X to complete the required quad-word copy. Then, the SGE length is reduced by the number of borrowed bytes. After this, if the remaining number of bytes from quad-word X (extra bytes) is greater than the new SGE length, the number of extra bytes needs to be updated to the new SGE length. Otherwise, when the SGE length gets updated again after the extra bytes are read to create the new byte carry, it goes negative, which then becomes a very large number as the SGE length is an unsigned integer. This causes SGE buffer to be over-read. Reviewed-by: Dean Luick Signed-off-by: Sebastian Sanchez Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/pio_copy.c b/drivers/infiniband/hw/hfi1/pio_copy.c index 8c25e1b..3a1ef30 100644 --- a/drivers/infiniband/hw/hfi1/pio_copy.c +++ b/drivers/infiniband/hw/hfi1/pio_copy.c @@ -771,6 +771,9 @@ void seg_pio_copy_mid(struct pio_buf *pbuf, const void *from, size_t nbytes) read_extra_bytes(pbuf, from, to_fill); from += to_fill; nbytes -= to_fill; + /* may not be enough valid bytes left to align */ + if (extra > nbytes) + extra = nbytes; /* ...now write carry */ dest = pbuf->start + (pbuf->qw_written * sizeof(u64)); @@ -798,6 +801,15 @@ void seg_pio_copy_mid(struct pio_buf *pbuf, const void *from, size_t nbytes) read_low_bytes(pbuf, from, extra); from += extra; nbytes -= extra; + /* + * If no bytes are left, return early - we are done. + * NOTE: This short-circuit is *required* because + * "extra" may have been reduced in size and "from" + * is not aligned, as required when leaving this + * if block. + */ + if (nbytes == 0) + return; } /* at this point, from is QW aligned */ -- cgit v0.10.2 From af53493916693343955930556aaa83f875b8436a Mon Sep 17 00:00:00 2001 From: Jubin John Date: Wed, 31 Aug 2016 07:24:27 -0700 Subject: IB/hfi1: Fix AHG KDETH Intr shift In the set_txreq_header_ahg(), The KDETH Intr bit is obtained from the header in the user sdma request using a KDETH_GET shift and mask macro. This value is then futher right shifted by 16 causing us to lose the value i.e it is shifted to zero, leading to the following smatch warning: drivers/infiniband/hw/hfi1/user_sdma.c:1482 set_txreq_header_ahg() warn: mask and shift to zero The Intr bit should be left shifted into its correct position in the KDETH header before the AHG update. Reported-by: Dan Carpenter Reviewed-by: Mitko Haralanov Reviewed-by: Harish Chegondi Signed-off-by: Jubin John Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c index 0ecf279..1694037 100644 --- a/drivers/infiniband/hw/hfi1/user_sdma.c +++ b/drivers/infiniband/hw/hfi1/user_sdma.c @@ -114,6 +114,8 @@ MODULE_PARM_DESC(sdma_comp_size, "Size of User SDMA completion ring. Default: 12 #define KDETH_HCRC_LOWER_SHIFT 24 #define KDETH_HCRC_LOWER_MASK 0xff +#define AHG_KDETH_INTR_SHIFT 12 + #define PBC2LRH(x) ((((x) & 0xfff) << 2) - 4) #define LRH2PBC(x) ((((x) >> 2) + 1) & 0xfff) @@ -1480,7 +1482,8 @@ static int set_txreq_header_ahg(struct user_sdma_request *req, /* Clear KDETH.SH on last packet */ if (unlikely(tx->flags & TXREQ_FLAGS_REQ_LAST_PKT)) { val |= cpu_to_le16(KDETH_GET(hdr->kdeth.ver_tid_offset, - INTR) >> 16); + INTR) << + AHG_KDETH_INTR_SHIFT); val &= cpu_to_le16(~(1U << 13)); AHG_HEADER_SET(req->ahg, diff, 7, 16, 14, val); } else { -- cgit v0.10.2 From 673b975f1fbad5382f76afdb987e7513c5f4b71b Mon Sep 17 00:00:00 2001 From: Dean Luick Date: Wed, 31 Aug 2016 07:24:33 -0700 Subject: IB/hfi1: Add QSFP sanity pre-check Sometimes a QSFP device does not respond in the expected time after a power-on. Add a read pre-check/retry when starting the link on driver load. Reviewed-by: Easwar Hariharan Signed-off-by: Dean Luick Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index b32638d..ec3635a 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -9490,6 +9490,78 @@ static void init_lcb(struct hfi1_devdata *dd) write_csr(dd, DC_LCB_CFG_TX_FIFOS_RESET, 0x00); } +/* + * Perform a test read on the QSFP. Return 0 on success, -ERRNO + * on error. + */ +static int test_qsfp_read(struct hfi1_pportdata *ppd) +{ + int ret; + u8 status; + + /* report success if not a QSFP */ + if (ppd->port_type != PORT_TYPE_QSFP) + return 0; + + /* read byte 2, the status byte */ + ret = one_qsfp_read(ppd, ppd->dd->hfi1_id, 2, &status, 1); + if (ret < 0) + return ret; + if (ret != 1) + return -EIO; + + return 0; /* success */ +} + +/* + * Values for QSFP retry. + * + * Give up after 10s (20 x 500ms). The overall timeout was empirically + * arrived at from experience on a large cluster. + */ +#define MAX_QSFP_RETRIES 20 +#define QSFP_RETRY_WAIT 500 /* msec */ + +/* + * Try a QSFP read. If it fails, schedule a retry for later. + * Called on first link activation after driver load. + */ +static void try_start_link(struct hfi1_pportdata *ppd) +{ + if (test_qsfp_read(ppd)) { + /* read failed */ + if (ppd->qsfp_retry_count >= MAX_QSFP_RETRIES) { + dd_dev_err(ppd->dd, "QSFP not responding, giving up\n"); + return; + } + dd_dev_info(ppd->dd, + "QSFP not responding, waiting and retrying %d\n", + (int)ppd->qsfp_retry_count); + ppd->qsfp_retry_count++; + queue_delayed_work(ppd->hfi1_wq, &ppd->start_link_work, + msecs_to_jiffies(QSFP_RETRY_WAIT)); + return; + } + ppd->qsfp_retry_count = 0; + + /* + * Tune the SerDes to a ballpark setting for optimal signal and bit + * error rate. Needs to be done before starting the link. + */ + tune_serdes(ppd); + start_link(ppd); +} + +/* + * Workqueue function to start the link after a delay. + */ +void handle_start_link(struct work_struct *work) +{ + struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata, + start_link_work.work); + try_start_link(ppd); +} + int bringup_serdes(struct hfi1_pportdata *ppd) { struct hfi1_devdata *dd = ppd->dd; @@ -9525,14 +9597,8 @@ int bringup_serdes(struct hfi1_pportdata *ppd) set_qsfp_int_n(ppd, 1); } - /* - * Tune the SerDes to a ballpark setting for - * optimal signal and bit error rate - * Needs to be done before starting the link - */ - tune_serdes(ppd); - - return start_link(ppd); + try_start_link(ppd); + return 0; } void hfi1_quiet_serdes(struct hfi1_pportdata *ppd) @@ -9549,6 +9615,10 @@ void hfi1_quiet_serdes(struct hfi1_pportdata *ppd) ppd->driver_link_ready = 0; ppd->link_enabled = 0; + ppd->qsfp_retry_count = MAX_QSFP_RETRIES; /* prevent more retries */ + flush_delayed_work(&ppd->start_link_work); + cancel_delayed_work_sync(&ppd->start_link_work); + ppd->offline_disabled_reason = HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED); set_link_down_reason(ppd, OPA_LINKDOWN_REASON_SMA_DISABLED, 0, diff --git a/drivers/infiniband/hw/hfi1/chip.h b/drivers/infiniband/hw/hfi1/chip.h index ed11107..e295737 100644 --- a/drivers/infiniband/hw/hfi1/chip.h +++ b/drivers/infiniband/hw/hfi1/chip.h @@ -706,6 +706,7 @@ void handle_link_up(struct work_struct *work); void handle_link_down(struct work_struct *work); void handle_link_downgrade(struct work_struct *work); void handle_link_bounce(struct work_struct *work); +void handle_start_link(struct work_struct *work); void handle_sma_message(struct work_struct *work); void reset_qsfp(struct hfi1_pportdata *ppd); void qsfp_event(struct work_struct *work); diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index a021e66..28b9128 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -605,6 +605,7 @@ struct hfi1_pportdata { struct work_struct freeze_work; struct work_struct link_downgrade_work; struct work_struct link_bounce_work; + struct delayed_work start_link_work; /* host link state variables */ struct mutex hls_lock; u32 host_link_state; @@ -659,6 +660,7 @@ struct hfi1_pportdata { u8 linkinit_reason; u8 local_tx_rate; /* rate given to 8051 firmware */ u8 last_pstate; /* info only */ + u8 qsfp_retry_count; /* placeholders for IB MAD packet settings */ u8 overrun_threshold; diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index b793545..000dc07 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -500,6 +500,7 @@ void hfi1_init_pportdata(struct pci_dev *pdev, struct hfi1_pportdata *ppd, INIT_WORK(&ppd->link_downgrade_work, handle_link_downgrade); INIT_WORK(&ppd->sma_message_work, handle_sma_message); INIT_WORK(&ppd->link_bounce_work, handle_link_bounce); + INIT_DELAYED_WORK(&ppd->start_link_work, handle_start_link); INIT_WORK(&ppd->linkstate_active_work, receive_interrupt_work); INIT_WORK(&ppd->qsfp_info.qsfp_work, qsfp_event); -- cgit v0.10.2 From 429b6a721727d49d8565b50a6bc0dc42432383a9 Mon Sep 17 00:00:00 2001 From: Harish Chegondi Date: Wed, 31 Aug 2016 07:24:40 -0700 Subject: IB/hfi1: Make n_krcvqs be an unsigned long integer The global variable n_krcvqs stores the sum of the number of kernel receive queues of VLs 0-7 which the user can pass to the driver through the module parameter array krcvqs which is of type unsigned integer. If the user passes large value(s) into krcvqs parameter array, it can cause an arithmetic overflow while calculating n_krcvqs which is also of type unsigned int. The overflow results in an incorrect value of n_krcvqs which can lead to kernel crash while loading the driver. Fix by changing the data type of n_krcvqs to unsigned long. This patch also changes the data type of other variables that get their values from n_krcvqs. Reviewed-by: Dennis Dalessandro Signed-off-by: Harish Chegondi Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index ec3635a..cc38004 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -12935,7 +12935,7 @@ fail: */ static int set_up_context_variables(struct hfi1_devdata *dd) { - int num_kernel_contexts; + unsigned long num_kernel_contexts; int total_contexts; int ret; unsigned ngroups; @@ -12964,9 +12964,9 @@ static int set_up_context_variables(struct hfi1_devdata *dd) */ if (num_kernel_contexts > (dd->chip_send_contexts - num_vls - 1)) { dd_dev_err(dd, - "Reducing # kernel rcv contexts to: %d, from %d\n", + "Reducing # kernel rcv contexts to: %d, from %lu\n", (int)(dd->chip_send_contexts - num_vls - 1), - (int)num_kernel_contexts); + num_kernel_contexts); num_kernel_contexts = dd->chip_send_contexts - num_vls - 1; } /* diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index 28b9128..325ec21 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1806,7 +1806,7 @@ extern unsigned int hfi1_max_mtu; extern unsigned int hfi1_cu; extern unsigned int user_credit_return_threshold; extern int num_user_contexts; -extern unsigned n_krcvqs; +extern unsigned long n_krcvqs; extern uint krcvqs[]; extern int krcvqsset; extern uint kdeth_qp; diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index 000dc07..384b43d 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -94,7 +94,7 @@ module_param_array(krcvqs, uint, &krcvqsset, S_IRUGO); MODULE_PARM_DESC(krcvqs, "Array of the number of non-control kernel receive queues by VL"); /* computed based on above array */ -unsigned n_krcvqs; +unsigned long n_krcvqs; static unsigned hfi1_rcvarr_split = 25; module_param_named(rcvarr_split, hfi1_rcvarr_split, uint, S_IRUGO); -- cgit v0.10.2 From 16170d9c102764f76c58aad244e947f4e3f44590 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Wed, 31 Aug 2016 07:24:46 -0700 Subject: IB/hfi1: Rework debugfs to use SRCU The debugfs RCU trips many debug kernel warnings because of potential sleeps with an RCU read lock held. This includes both user copy calls and slab allocations throughout the file. This patch switches the RCU to use SRCU for file remove/access race protection. In one case, the SRCU is implicit in the use of the raw debugfs file object and just works. In the seq_file case, a wrapper around seq_read() and seq_lseek() is used to enforce the SRCU using the debugfs supplied functions debugfs_use_file_start() and debugfs_use_file_stop(). The sychronize_rcu() is deleted since the SRCU prevents the remove access race. The RCU locking is kept for qp_stats since the QP hash list is protected using the non-sleepable RCU. Reviewed-by: Sebastian Sanchez Signed-off-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c index a49cc88..5e9be16 100644 --- a/drivers/infiniband/hw/hfi1/debugfs.c +++ b/drivers/infiniband/hw/hfi1/debugfs.c @@ -59,6 +59,40 @@ static struct dentry *hfi1_dbg_root; +/* wrappers to enforce srcu in seq file */ +static ssize_t hfi1_seq_read( + struct file *file, + char __user *buf, + size_t size, + loff_t *ppos) +{ + struct dentry *d = file->f_path.dentry; + int srcu_idx; + ssize_t r; + + r = debugfs_use_file_start(d, &srcu_idx); + if (likely(!r)) + r = seq_read(file, buf, size, ppos); + debugfs_use_file_finish(srcu_idx); + return r; +} + +static loff_t hfi1_seq_lseek( + struct file *file, + loff_t offset, + int whence) +{ + struct dentry *d = file->f_path.dentry; + int srcu_idx; + loff_t r; + + r = debugfs_use_file_start(d, &srcu_idx); + if (likely(!r)) + r = seq_lseek(file, offset, whence); + debugfs_use_file_finish(srcu_idx); + return r; +} + #define private2dd(file) (file_inode(file)->i_private) #define private2ppd(file) (file_inode(file)->i_private) @@ -87,8 +121,8 @@ static int _##name##_open(struct inode *inode, struct file *s) \ static const struct file_operations _##name##_file_ops = { \ .owner = THIS_MODULE, \ .open = _##name##_open, \ - .read = seq_read, \ - .llseek = seq_lseek, \ + .read = hfi1_seq_read, \ + .llseek = hfi1_seq_lseek, \ .release = seq_release \ } @@ -105,11 +139,9 @@ do { \ DEBUGFS_FILE_CREATE(#name, parent, data, &_##name##_file_ops, S_IRUGO) static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) -__acquires(RCU) { struct hfi1_opcode_stats_perctx *opstats; - rcu_read_lock(); if (*pos >= ARRAY_SIZE(opstats->stats)) return NULL; return pos; @@ -126,9 +158,7 @@ static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) } static void _opcode_stats_seq_stop(struct seq_file *s, void *v) -__releases(RCU) { - rcu_read_unlock(); } static int _opcode_stats_seq_show(struct seq_file *s, void *v) @@ -285,12 +315,10 @@ DEBUGFS_SEQ_FILE_OPEN(qp_stats) DEBUGFS_FILE_OPS(qp_stats); static void *_sdes_seq_start(struct seq_file *s, loff_t *pos) -__acquires(RCU) { struct hfi1_ibdev *ibd; struct hfi1_devdata *dd; - rcu_read_lock(); ibd = (struct hfi1_ibdev *)s->private; dd = dd_from_dev(ibd); if (!dd->per_sdma || *pos >= dd->num_sdma) @@ -310,9 +338,7 @@ static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos) } static void _sdes_seq_stop(struct seq_file *s, void *v) -__releases(RCU) { - rcu_read_unlock(); } static int _sdes_seq_show(struct seq_file *s, void *v) @@ -339,11 +365,9 @@ static ssize_t dev_counters_read(struct file *file, char __user *buf, struct hfi1_devdata *dd; ssize_t rval; - rcu_read_lock(); dd = private2dd(file); avail = hfi1_read_cntrs(dd, NULL, &counters); rval = simple_read_from_buffer(buf, count, ppos, counters, avail); - rcu_read_unlock(); return rval; } @@ -356,11 +380,9 @@ static ssize_t dev_names_read(struct file *file, char __user *buf, struct hfi1_devdata *dd; ssize_t rval; - rcu_read_lock(); dd = private2dd(file); avail = hfi1_read_cntrs(dd, &names, NULL); rval = simple_read_from_buffer(buf, count, ppos, names, avail); - rcu_read_unlock(); return rval; } @@ -383,11 +405,9 @@ static ssize_t portnames_read(struct file *file, char __user *buf, struct hfi1_devdata *dd; ssize_t rval; - rcu_read_lock(); dd = private2dd(file); avail = hfi1_read_portcntrs(dd->pport, &names, NULL); rval = simple_read_from_buffer(buf, count, ppos, names, avail); - rcu_read_unlock(); return rval; } @@ -400,11 +420,9 @@ static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf, struct hfi1_pportdata *ppd; ssize_t rval; - rcu_read_lock(); ppd = private2ppd(file); avail = hfi1_read_portcntrs(ppd, NULL, &counters); rval = simple_read_from_buffer(buf, count, ppos, counters, avail); - rcu_read_unlock(); return rval; } @@ -434,16 +452,13 @@ static ssize_t asic_flags_read(struct file *file, char __user *buf, int used; int i; - rcu_read_lock(); ppd = private2ppd(file); dd = ppd->dd; size = PAGE_SIZE; used = 0; tmp = kmalloc(size, GFP_KERNEL); - if (!tmp) { - rcu_read_unlock(); + if (!tmp) return -ENOMEM; - } scratch0 = read_csr(dd, ASIC_CFG_SCRATCH); used += scnprintf(tmp + used, size - used, @@ -470,7 +485,6 @@ static ssize_t asic_flags_read(struct file *file, char __user *buf, used += scnprintf(tmp + used, size - used, "Write bits to clear\n"); ret = simple_read_from_buffer(buf, count, ppos, tmp, used); - rcu_read_unlock(); kfree(tmp); return ret; } @@ -486,15 +500,12 @@ static ssize_t asic_flags_write(struct file *file, const char __user *buf, u64 scratch0; u64 clear; - rcu_read_lock(); ppd = private2ppd(file); dd = ppd->dd; buff = kmalloc(count + 1, GFP_KERNEL); - if (!buff) { - ret = -ENOMEM; - goto do_return; - } + if (!buff) + return -ENOMEM; ret = copy_from_user(buff, buf, count); if (ret > 0) { @@ -527,8 +538,6 @@ static ssize_t asic_flags_write(struct file *file, const char __user *buf, do_free: kfree(buff); - do_return: - rcu_read_unlock(); return ret; } @@ -542,18 +551,14 @@ static ssize_t qsfp_debugfs_dump(struct file *file, char __user *buf, char *tmp; int ret; - rcu_read_lock(); ppd = private2ppd(file); tmp = kmalloc(PAGE_SIZE, GFP_KERNEL); - if (!tmp) { - rcu_read_unlock(); + if (!tmp) return -ENOMEM; - } ret = qsfp_dump(ppd, tmp, PAGE_SIZE); if (ret > 0) ret = simple_read_from_buffer(buf, count, ppos, tmp, ret); - rcu_read_unlock(); kfree(tmp); return ret; } @@ -569,7 +574,6 @@ static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf, int offset; int total_written; - rcu_read_lock(); ppd = private2ppd(file); /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */ @@ -577,16 +581,12 @@ static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf, offset = *ppos & 0xffff; /* explicitly reject invalid address 0 to catch cp and cat */ - if (i2c_addr == 0) { - ret = -EINVAL; - goto _return; - } + if (i2c_addr == 0) + return -EINVAL; buff = kmalloc(count, GFP_KERNEL); - if (!buff) { - ret = -ENOMEM; - goto _return; - } + if (!buff) + return -ENOMEM; ret = copy_from_user(buff, buf, count); if (ret > 0) { @@ -606,8 +606,6 @@ static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf, _free: kfree(buff); - _return: - rcu_read_unlock(); return ret; } @@ -636,7 +634,6 @@ static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf, int offset; int total_read; - rcu_read_lock(); ppd = private2ppd(file); /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */ @@ -644,16 +641,12 @@ static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf, offset = *ppos & 0xffff; /* explicitly reject invalid address 0 to catch cp and cat */ - if (i2c_addr == 0) { - ret = -EINVAL; - goto _return; - } + if (i2c_addr == 0) + return -EINVAL; buff = kmalloc(count, GFP_KERNEL); - if (!buff) { - ret = -ENOMEM; - goto _return; - } + if (!buff) + return -ENOMEM; total_read = i2c_read(ppd, target, i2c_addr, offset, buff, count); if (total_read < 0) { @@ -673,8 +666,6 @@ static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf, _free: kfree(buff); - _return: - rcu_read_unlock(); return ret; } @@ -701,26 +692,20 @@ static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf, int ret; int total_written; - rcu_read_lock(); - if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */ - ret = -EINVAL; - goto _return; - } + if (*ppos + count > QSFP_PAGESIZE * 4) /* base page + page00-page03 */ + return -EINVAL; ppd = private2ppd(file); buff = kmalloc(count, GFP_KERNEL); - if (!buff) { - ret = -ENOMEM; - goto _return; - } + if (!buff) + return -ENOMEM; ret = copy_from_user(buff, buf, count); if (ret > 0) { ret = -EFAULT; goto _free; } - total_written = qsfp_write(ppd, target, *ppos, buff, count); if (total_written < 0) { ret = total_written; @@ -733,8 +718,6 @@ static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf, _free: kfree(buff); - _return: - rcu_read_unlock(); return ret; } @@ -761,7 +744,6 @@ static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf, int ret; int total_read; - rcu_read_lock(); if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */ ret = -EINVAL; goto _return; @@ -794,7 +776,6 @@ static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf, _free: kfree(buff); _return: - rcu_read_unlock(); return ret; } @@ -1010,7 +991,6 @@ void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd) debugfs_remove_recursive(ibd->hfi1_ibdev_dbg); out: ibd->hfi1_ibdev_dbg = NULL; - synchronize_rcu(); } /* @@ -1035,9 +1015,7 @@ static const char * const hfi1_statnames[] = { }; static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos) -__acquires(RCU) { - rcu_read_lock(); if (*pos >= ARRAY_SIZE(hfi1_statnames)) return NULL; return pos; @@ -1055,9 +1033,7 @@ static void *_driver_stats_names_seq_next( } static void _driver_stats_names_seq_stop(struct seq_file *s, void *v) -__releases(RCU) { - rcu_read_unlock(); } static int _driver_stats_names_seq_show(struct seq_file *s, void *v) @@ -1073,9 +1049,7 @@ DEBUGFS_SEQ_FILE_OPEN(driver_stats_names) DEBUGFS_FILE_OPS(driver_stats_names); static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos) -__acquires(RCU) { - rcu_read_lock(); if (*pos >= ARRAY_SIZE(hfi1_statnames)) return NULL; return pos; @@ -1090,9 +1064,7 @@ static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) } static void _driver_stats_seq_stop(struct seq_file *s, void *v) -__releases(RCU) { - rcu_read_unlock(); } static u64 hfi1_sps_ints(void) -- cgit v0.10.2 From d1992996753132e2dafe955cccb2fb0714d3cfc4 Mon Sep 17 00:00:00 2001 From: Emanuel Czirai Date: Fri, 2 Sep 2016 07:35:50 +0200 Subject: x86/AMD: Apply erratum 665 on machines without a BIOS fix AMD F12h machines have an erratum which can cause DIV/IDIV to behave unpredictably. The workaround is to set MSRC001_1029[31] but sometimes there is no BIOS update containing that workaround so let's do it ourselves unconditionally. It is simple enough. [ Borislav: Wrote commit message. ] Signed-off-by: Emanuel Czirai Signed-off-by: Borislav Petkov Cc: Yaowu Xu Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160902053550.18097-1-bp@alien8.de Signed-off-by: Thomas Gleixner diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index f5c69d8..b81fe2d 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -669,6 +669,17 @@ static void init_amd_gh(struct cpuinfo_x86 *c) set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH); } +#define MSR_AMD64_DE_CFG 0xC0011029 + +static void init_amd_ln(struct cpuinfo_x86 *c) +{ + /* + * Apply erratum 665 fix unconditionally so machines without a BIOS + * fix work. + */ + msr_set_bit(MSR_AMD64_DE_CFG, 31); +} + static void init_amd_bd(struct cpuinfo_x86 *c) { u64 value; @@ -726,6 +737,7 @@ static void init_amd(struct cpuinfo_x86 *c) case 6: init_amd_k7(c); break; case 0xf: init_amd_k8(c); break; case 0x10: init_amd_gh(c); break; + case 0x12: init_amd_ln(c); break; case 0x15: init_amd_bd(c); break; } -- cgit v0.10.2 From 2f86953e7436c9b9a4690909c5e2db24799e173b Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Fri, 2 Sep 2016 10:22:54 +0200 Subject: l2tp: fix use-after-free during module unload Tunnel deletion is delayed by both a workqueue (l2tp_tunnel_delete -> wq -> l2tp_tunnel_del_work) and RCU (sk_destruct -> RCU -> l2tp_tunnel_destruct). By the time l2tp_tunnel_destruct() runs to destroy the tunnel and finish destroying the socket, the private data reserved via the net_generic mechanism has already been freed, but l2tp_tunnel_destruct() actually uses this data. Make sure tunnel deletion for the netns has completed before returning from l2tp_exit_net() by first flushing the tunnel removal workqueue, and then waiting for RCU callbacks to complete. Fixes: 167eb17e0b17 ("l2tp: create tunnel sockets in the right namespace") Signed-off-by: Sabrina Dubroca Signed-off-by: David S. Miller diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 1e40dac..a2ed3bd 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1855,6 +1855,9 @@ static __net_exit void l2tp_exit_net(struct net *net) (void)l2tp_tunnel_delete(tunnel); } rcu_read_unlock_bh(); + + flush_workqueue(l2tp_wq); + rcu_barrier(); } static struct pernet_operations l2tp_net_ops = { -- cgit v0.10.2 From 3feab13c919f99b0a17d0ca22ae00cf90f5d3fd1 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Tue, 16 Aug 2016 16:59:52 +0100 Subject: ACPI / drivers: fix typo in ACPI_DECLARE_PROBE_ENTRY macro When the ACPI_DECLARE_PROBE_ENTRY macro was added in commit e647b532275b ("ACPI: Add early device probing infrastructure"), a stub macro adding an unused entry was added for the !CONFIG_ACPI Kconfig option case to make sure kernel code making use of the macro did not require to be guarded within CONFIG_ACPI in order to be compiled. The stub macro was never used since all kernel code that defines ACPI_DECLARE_PROBE_ENTRY entries is currently guarded within CONFIG_ACPI; it contains a typo that should be nonetheless fixed. Fix the typo in the stub (ie !CONFIG_ACPI) ACPI_DECLARE_PROBE_ENTRY() macro so that it can actually be used if needed. Signed-off-by: Lorenzo Pieralisi Fixes: e647b532275b (ACPI: Add early device probing infrastructure) Cc: 4.4+ # 4.4+ Signed-off-by: Rafael J. Wysocki diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 4d8452c..c5eaf2f 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1056,7 +1056,7 @@ static inline struct fwnode_handle *acpi_get_next_subnode(struct device *dev, return NULL; } -#define ACPI_DECLARE_PROBE_ENTRY(table, name, table_id, subtable, validate, data, fn) \ +#define ACPI_DECLARE_PROBE_ENTRY(table, name, table_id, subtable, valid, data, fn) \ static const void * __acpi_table_##name[] \ __attribute__((unused)) \ = { (void *) table_id, \ -- cgit v0.10.2 From 5331d9cab32ef640b4cd38a43b0858874fbb7168 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Tue, 16 Aug 2016 16:59:53 +0100 Subject: ACPI / drivers: replace acpi_probe_lock spinlock with mutex Commit e647b532275b ("ACPI: Add early device probing infrastructure") introduced code that allows inserting driver specific struct acpi_probe_entry probe entries into ACPI linker sections (one per-subsystem, eg irqchip, clocksource) that are then walked to retrieve the data and function hooks required to probe the respective kernel components. Probing for all entries in a section is triggered through the __acpi_probe_device_table() function, that in turn, according to the table ID a given probe entry reports parses the table with the function retrieved from the respective section structures (ie struct acpi_probe_entry). Owing to the current ACPI table parsing implementation, the __acpi_probe_device_table() function has to share global variables with the acpi_match_madt() function, so in order to guarantee mutual exclusion locking is required between the two functions. Current kernel code implements the locking through the acpi_probe_lock spinlock; this has the side effect of requiring all code called within the lock (ie struct acpi_probe_entry.probe_{table/subtbl} hooks) not to sleep. However, kernel subsystems that make use of the early probing infrastructure are relying on kernel APIs that may sleep (eg irq_domain_alloc_fwnode(), among others) in the function calls pointed at by struct acpi_probe_entry.{probe_table/subtbl} entries (eg gic_v2_acpi_init()), which is a bug. Since __acpi_probe_device_table() is called from context that is allowed to sleep the acpi_probe_lock spinlock can be replaced with a mutex; this fixes the issue whilst still guaranteeing mutual exclusion. Signed-off-by: Lorenzo Pieralisi Fixes: e647b532275b (ACPI: Add early device probing infrastructure) Cc: 4.4+ # 4.4+ Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index ad9fc84..e878fc7 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2054,7 +2054,7 @@ int __init acpi_scan_init(void) static struct acpi_probe_entry *ape; static int acpi_probe_count; -static DEFINE_SPINLOCK(acpi_probe_lock); +static DEFINE_MUTEX(acpi_probe_mutex); static int __init acpi_match_madt(struct acpi_subtable_header *header, const unsigned long end) @@ -2073,7 +2073,7 @@ int __init __acpi_probe_device_table(struct acpi_probe_entry *ap_head, int nr) if (acpi_disabled) return 0; - spin_lock(&acpi_probe_lock); + mutex_lock(&acpi_probe_mutex); for (ape = ap_head; nr; ape++, nr--) { if (ACPI_COMPARE_NAME(ACPI_SIG_MADT, ape->id)) { acpi_probe_count = 0; @@ -2086,7 +2086,7 @@ int __init __acpi_probe_device_table(struct acpi_probe_entry *ap_head, int nr) count++; } } - spin_unlock(&acpi_probe_lock); + mutex_unlock(&acpi_probe_mutex); return count; } -- cgit v0.10.2 From 4a29b3484f857ff350f203a2d9bf3b428c9e0bf2 Mon Sep 17 00:00:00 2001 From: Jarkko Sakkinen Date: Fri, 2 Sep 2016 02:36:58 +0300 Subject: tpm: invalid self test error message The driver emits invalid self test error message even though the init succeeds. Signed-off-by: Jarkko Sakkinen Fixes: cae8b441fc20 ("tpm: Factor out common startup code") Reviewed-by: James Morris Signed-off-by: James Morris diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 08c7e23..0c75c3f 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -957,7 +957,7 @@ int tpm2_auto_startup(struct tpm_chip *chip) goto out; rc = tpm2_do_selftest(chip); - if (rc != TPM2_RC_INITIALIZE) { + if (rc != 0 && rc != TPM2_RC_INITIALIZE) { dev_err(&chip->dev, "TPM self test failed\n"); goto out; } @@ -974,7 +974,6 @@ int tpm2_auto_startup(struct tpm_chip *chip) } } - return rc; out: if (rc > 0) rc = -ENODEV; -- cgit v0.10.2 From 1358bd5a7477b346dfb6b502051d61f29b11a200 Mon Sep 17 00:00:00 2001 From: Jeremy Linton Date: Thu, 1 Sep 2016 15:15:06 -0500 Subject: net: smsc911x: Remove multiple exit points from smsc911x_open Rework the error handling in smsc911x open in preparation for the mdio startup being moved here. Signed-off-by: Jeremy Linton Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index ca31345..c9b0e05 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1520,17 +1520,20 @@ static int smsc911x_open(struct net_device *dev) unsigned int timeout; unsigned int temp; unsigned int intcfg; + int retval; /* if the phy is not yet registered, retry later*/ if (!dev->phydev) { SMSC_WARN(pdata, hw, "phy_dev is NULL"); - return -EAGAIN; + retval = -EAGAIN; + goto out; } /* Reset the LAN911x */ - if (smsc911x_soft_reset(pdata)) { + retval = smsc911x_soft_reset(pdata); + if (retval) { SMSC_WARN(pdata, hw, "soft reset failed"); - return -EIO; + goto out; } smsc911x_reg_write(pdata, HW_CFG, 0x00050000); @@ -1600,7 +1603,8 @@ static int smsc911x_open(struct net_device *dev) if (!pdata->software_irq_signal) { netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n", dev->irq); - return -ENODEV; + retval = -ENODEV; + goto out; } SMSC_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d", dev->irq); @@ -1646,6 +1650,8 @@ static int smsc911x_open(struct net_device *dev) netif_start_queue(dev); return 0; +out: + return retval; } /* Entry point for stopping the interface */ -- cgit v0.10.2 From aea95dd52db436f406f3f45a455a710774a3a210 Mon Sep 17 00:00:00 2001 From: Jeremy Linton Date: Thu, 1 Sep 2016 15:15:07 -0500 Subject: net: smsc911x: Fix register_netdev, phy startup, driver unload ordering Move phy startup/shutdown into the smsc911x_open/stop routines. This allows the module to be unloaded because phy_connect_direct is no longer always holding the module use count. This one change also resolves a number of other problems. The link status of a downed interface no longer reflects a stale state. Errors caused by the net device being opened before the mdio/phy was configured. There is also a potential power savings as the phy's don't remain powered when the interface isn't running. Signed-off-by: Jeremy Linton Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index c9b0e05..823ad3f 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1099,15 +1099,8 @@ static int smsc911x_mii_init(struct platform_device *pdev, goto err_out_free_bus_2; } - if (smsc911x_mii_probe(dev) < 0) { - SMSC_WARN(pdata, probe, "Error registering mii bus"); - goto err_out_unregister_bus_3; - } - return 0; -err_out_unregister_bus_3: - mdiobus_unregister(pdata->mii_bus); err_out_free_bus_2: mdiobus_free(pdata->mii_bus); err_out_1: @@ -1522,18 +1515,20 @@ static int smsc911x_open(struct net_device *dev) unsigned int intcfg; int retval; - /* if the phy is not yet registered, retry later*/ + /* find and start the given phy */ if (!dev->phydev) { - SMSC_WARN(pdata, hw, "phy_dev is NULL"); - retval = -EAGAIN; - goto out; + retval = smsc911x_mii_probe(dev); + if (retval < 0) { + SMSC_WARN(pdata, probe, "Error starting phy"); + goto out; + } } /* Reset the LAN911x */ retval = smsc911x_soft_reset(pdata); if (retval) { SMSC_WARN(pdata, hw, "soft reset failed"); - goto out; + goto mii_free_out; } smsc911x_reg_write(pdata, HW_CFG, 0x00050000); @@ -1604,7 +1599,7 @@ static int smsc911x_open(struct net_device *dev) netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n", dev->irq); retval = -ENODEV; - goto out; + goto mii_free_out; } SMSC_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d", dev->irq); @@ -1650,6 +1645,10 @@ static int smsc911x_open(struct net_device *dev) netif_start_queue(dev); return 0; + +mii_free_out: + phy_disconnect(dev->phydev); + dev->phydev = NULL; out: return retval; } @@ -1674,8 +1673,12 @@ static int smsc911x_stop(struct net_device *dev) smsc911x_tx_update_txcounters(dev); /* Bring the PHY down */ - if (dev->phydev) + if (dev->phydev) { phy_stop(dev->phydev); + phy_disconnect(dev->phydev); + dev->phydev = NULL; + } + netif_carrier_off(dev); SMSC_TRACE(pdata, ifdown, "Interface stopped"); return 0; @@ -2297,11 +2300,10 @@ static int smsc911x_drv_remove(struct platform_device *pdev) pdata = netdev_priv(dev); BUG_ON(!pdata); BUG_ON(!pdata->ioaddr); - BUG_ON(!dev->phydev); + WARN_ON(dev->phydev); SMSC_TRACE(pdata, ifdown, "Stopping driver"); - phy_disconnect(dev->phydev); mdiobus_unregister(pdata->mii_bus); mdiobus_free(pdata->mii_bus); @@ -2500,6 +2502,12 @@ static int smsc911x_drv_probe(struct platform_device *pdev) netif_carrier_off(dev); + retval = smsc911x_mii_init(pdev, dev); + if (retval) { + SMSC_WARN(pdata, probe, "Error %i initialising mii", retval); + goto out_free_irq; + } + retval = register_netdev(dev); if (retval) { SMSC_WARN(pdata, probe, "Error %i registering device", retval); @@ -2509,12 +2517,6 @@ static int smsc911x_drv_probe(struct platform_device *pdev) "Network interface: \"%s\"", dev->name); } - retval = smsc911x_mii_init(pdev, dev); - if (retval) { - SMSC_WARN(pdata, probe, "Error %i initialising mii", retval); - goto out_unregister_netdev_5; - } - spin_lock_irq(&pdata->mac_lock); /* Check if mac address has been specified when bringing interface up */ @@ -2550,8 +2552,6 @@ static int smsc911x_drv_probe(struct platform_device *pdev) return 0; -out_unregister_netdev_5: - unregister_netdev(dev); out_free_irq: free_irq(dev->irq, dev); out_disable_resources: -- cgit v0.10.2 From a85f00c36ef53ea3cb5ebf3dee4ce9cc6726671f Mon Sep 17 00:00:00 2001 From: Jeremy Linton Date: Thu, 1 Sep 2016 15:15:08 -0500 Subject: net: smsc911x: Move interrupt handler before open In preparation for the allocating/enabling interrupts in the ndo_open routine move the irq handler before it. Signed-off-by: Jeremy Linton Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index 823ad3f..c2e56f0 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1507,6 +1507,67 @@ static void smsc911x_disable_irq_chip(struct net_device *dev) smsc911x_reg_write(pdata, INT_STS, 0xFFFFFFFF); } +static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct smsc911x_data *pdata = netdev_priv(dev); + u32 intsts = smsc911x_reg_read(pdata, INT_STS); + u32 inten = smsc911x_reg_read(pdata, INT_EN); + int serviced = IRQ_NONE; + u32 temp; + + if (unlikely(intsts & inten & INT_STS_SW_INT_)) { + temp = smsc911x_reg_read(pdata, INT_EN); + temp &= (~INT_EN_SW_INT_EN_); + smsc911x_reg_write(pdata, INT_EN, temp); + smsc911x_reg_write(pdata, INT_STS, INT_STS_SW_INT_); + pdata->software_irq_signal = 1; + smp_wmb(); + serviced = IRQ_HANDLED; + } + + if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) { + /* Called when there is a multicast update scheduled and + * it is now safe to complete the update */ + SMSC_TRACE(pdata, intr, "RX Stop interrupt"); + smsc911x_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_); + if (pdata->multicast_update_pending) + smsc911x_rx_multicast_update_workaround(pdata); + serviced = IRQ_HANDLED; + } + + if (intsts & inten & INT_STS_TDFA_) { + temp = smsc911x_reg_read(pdata, FIFO_INT); + temp |= FIFO_INT_TX_AVAIL_LEVEL_; + smsc911x_reg_write(pdata, FIFO_INT, temp); + smsc911x_reg_write(pdata, INT_STS, INT_STS_TDFA_); + netif_wake_queue(dev); + serviced = IRQ_HANDLED; + } + + if (unlikely(intsts & inten & INT_STS_RXE_)) { + SMSC_TRACE(pdata, intr, "RX Error interrupt"); + smsc911x_reg_write(pdata, INT_STS, INT_STS_RXE_); + serviced = IRQ_HANDLED; + } + + if (likely(intsts & inten & INT_STS_RSFL_)) { + if (likely(napi_schedule_prep(&pdata->napi))) { + /* Disable Rx interrupts */ + temp = smsc911x_reg_read(pdata, INT_EN); + temp &= (~INT_EN_RSFL_EN_); + smsc911x_reg_write(pdata, INT_EN, temp); + /* Schedule a NAPI poll */ + __napi_schedule(&pdata->napi); + } else { + SMSC_WARN(pdata, rx_err, "napi_schedule_prep failed"); + } + serviced = IRQ_HANDLED; + } + + return serviced; +} + static int smsc911x_open(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); @@ -1820,67 +1881,6 @@ static void smsc911x_set_multicast_list(struct net_device *dev) spin_unlock_irqrestore(&pdata->mac_lock, flags); } -static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct smsc911x_data *pdata = netdev_priv(dev); - u32 intsts = smsc911x_reg_read(pdata, INT_STS); - u32 inten = smsc911x_reg_read(pdata, INT_EN); - int serviced = IRQ_NONE; - u32 temp; - - if (unlikely(intsts & inten & INT_STS_SW_INT_)) { - temp = smsc911x_reg_read(pdata, INT_EN); - temp &= (~INT_EN_SW_INT_EN_); - smsc911x_reg_write(pdata, INT_EN, temp); - smsc911x_reg_write(pdata, INT_STS, INT_STS_SW_INT_); - pdata->software_irq_signal = 1; - smp_wmb(); - serviced = IRQ_HANDLED; - } - - if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) { - /* Called when there is a multicast update scheduled and - * it is now safe to complete the update */ - SMSC_TRACE(pdata, intr, "RX Stop interrupt"); - smsc911x_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_); - if (pdata->multicast_update_pending) - smsc911x_rx_multicast_update_workaround(pdata); - serviced = IRQ_HANDLED; - } - - if (intsts & inten & INT_STS_TDFA_) { - temp = smsc911x_reg_read(pdata, FIFO_INT); - temp |= FIFO_INT_TX_AVAIL_LEVEL_; - smsc911x_reg_write(pdata, FIFO_INT, temp); - smsc911x_reg_write(pdata, INT_STS, INT_STS_TDFA_); - netif_wake_queue(dev); - serviced = IRQ_HANDLED; - } - - if (unlikely(intsts & inten & INT_STS_RXE_)) { - SMSC_TRACE(pdata, intr, "RX Error interrupt"); - smsc911x_reg_write(pdata, INT_STS, INT_STS_RXE_); - serviced = IRQ_HANDLED; - } - - if (likely(intsts & inten & INT_STS_RSFL_)) { - if (likely(napi_schedule_prep(&pdata->napi))) { - /* Disable Rx interrupts */ - temp = smsc911x_reg_read(pdata, INT_EN); - temp &= (~INT_EN_RSFL_EN_); - smsc911x_reg_write(pdata, INT_EN, temp); - /* Schedule a NAPI poll */ - __napi_schedule(&pdata->napi); - } else { - SMSC_WARN(pdata, rx_err, "napi_schedule_prep failed"); - } - serviced = IRQ_HANDLED; - } - - return serviced; -} - #ifdef CONFIG_NET_POLL_CONTROLLER static void smsc911x_poll_controller(struct net_device *dev) { -- cgit v0.10.2 From f252974eaa64f64b940894f24bfa162a8e7f6b0d Mon Sep 17 00:00:00 2001 From: Jeremy Linton Date: Thu, 1 Sep 2016 15:15:09 -0500 Subject: net: smsc911x: Move interrupt allocation to open/stop The /proc/irq/xx information is incorrect for smsc911x because the request_irq is happening before the register_netdev has the proper device name. Moving it to the open also fixes the case of when the device is renamed. Reported-by: Will Deacon Signed-off-by: Jeremy Linton Tested-by: Will Deacon Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index c2e56f0..4f8910b 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1575,6 +1575,7 @@ static int smsc911x_open(struct net_device *dev) unsigned int temp; unsigned int intcfg; int retval; + int irq_flags; /* find and start the given phy */ if (!dev->phydev) { @@ -1645,6 +1646,15 @@ static int smsc911x_open(struct net_device *dev) pdata->software_irq_signal = 0; smp_wmb(); + irq_flags = irq_get_trigger_type(dev->irq); + retval = request_irq(dev->irq, smsc911x_irqhandler, + irq_flags | IRQF_SHARED, dev->name, dev); + if (retval) { + SMSC_WARN(pdata, probe, + "Unable to claim requested irq: %d", dev->irq); + goto mii_free_out; + } + temp = smsc911x_reg_read(pdata, INT_EN); temp |= INT_EN_SW_INT_EN_; smsc911x_reg_write(pdata, INT_EN, temp); @@ -1660,7 +1670,7 @@ static int smsc911x_open(struct net_device *dev) netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n", dev->irq); retval = -ENODEV; - goto mii_free_out; + goto irq_stop_out; } SMSC_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d", dev->irq); @@ -1707,6 +1717,8 @@ static int smsc911x_open(struct net_device *dev) netif_start_queue(dev); return 0; +irq_stop_out: + free_irq(dev->irq, dev); mii_free_out: phy_disconnect(dev->phydev); dev->phydev = NULL; @@ -1733,6 +1745,8 @@ static int smsc911x_stop(struct net_device *dev) dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); smsc911x_tx_update_txcounters(dev); + free_irq(dev->irq, dev); + /* Bring the PHY down */ if (dev->phydev) { phy_stop(dev->phydev); @@ -2308,7 +2322,6 @@ static int smsc911x_drv_remove(struct platform_device *pdev) mdiobus_free(pdata->mii_bus); unregister_netdev(dev); - free_irq(dev->irq, dev); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smsc911x-memory"); if (!res) @@ -2393,8 +2406,7 @@ static int smsc911x_drv_probe(struct platform_device *pdev) struct smsc911x_data *pdata; struct smsc911x_platform_config *config = dev_get_platdata(&pdev->dev); struct resource *res; - unsigned int intcfg = 0; - int res_size, irq, irq_flags; + int res_size, irq; int retval; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -2433,7 +2445,6 @@ static int smsc911x_drv_probe(struct platform_device *pdev) pdata = netdev_priv(dev); dev->irq = irq; - irq_flags = irq_get_trigger_type(irq); pdata->ioaddr = ioremap_nocache(res->start, res_size); pdata->dev = dev; @@ -2480,38 +2491,18 @@ static int smsc911x_drv_probe(struct platform_device *pdev) if (retval < 0) goto out_disable_resources; - /* configure irq polarity and type before connecting isr */ - if (pdata->config.irq_polarity == SMSC911X_IRQ_POLARITY_ACTIVE_HIGH) - intcfg |= INT_CFG_IRQ_POL_; - - if (pdata->config.irq_type == SMSC911X_IRQ_TYPE_PUSH_PULL) - intcfg |= INT_CFG_IRQ_TYPE_; - - smsc911x_reg_write(pdata, INT_CFG, intcfg); - - /* Ensure interrupts are globally disabled before connecting ISR */ - smsc911x_disable_irq_chip(dev); - - retval = request_irq(dev->irq, smsc911x_irqhandler, - irq_flags | IRQF_SHARED, dev->name, dev); - if (retval) { - SMSC_WARN(pdata, probe, - "Unable to claim requested irq: %d", dev->irq); - goto out_disable_resources; - } - netif_carrier_off(dev); retval = smsc911x_mii_init(pdev, dev); if (retval) { SMSC_WARN(pdata, probe, "Error %i initialising mii", retval); - goto out_free_irq; + goto out_disable_resources; } retval = register_netdev(dev); if (retval) { SMSC_WARN(pdata, probe, "Error %i registering device", retval); - goto out_free_irq; + goto out_disable_resources; } else { SMSC_TRACE(pdata, probe, "Network interface: \"%s\"", dev->name); @@ -2552,8 +2543,6 @@ static int smsc911x_drv_probe(struct platform_device *pdev) return 0; -out_free_irq: - free_irq(dev->irq, dev); out_disable_resources: pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); -- cgit v0.10.2 From d0716dde375eb6bff332763bb2137302120d263d Mon Sep 17 00:00:00 2001 From: Sien Wu Date: Thu, 1 Sep 2016 18:24:29 -0500 Subject: spi: Prevent unexpected SPI time out due to arithmetic overflow When reading SPI flash as MTD device, the transfer length is directly passed to the spi driver. If the requested data size exceeds 512KB, it will cause the time out calculation to overflow since transfer length is 32-bit unsigned integer. This issue is resolved by using 64-bit unsigned integer to perform the arithmetic. Signed-off-by: Sien Wu Acked-by: Brad Keryan Acked-by: Gratian Crisan Acked-by: Brad Mouring Natinst-ReviewBoard-ID 150232 Signed-off-by: Mark Brown diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 51ad42f..ac889df 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -960,7 +960,7 @@ static int spi_transfer_one_message(struct spi_master *master, struct spi_transfer *xfer; bool keep_cs = false; int ret = 0; - unsigned long ms = 1; + unsigned long long ms = 1; struct spi_statistics *statm = &master->statistics; struct spi_statistics *stats = &msg->spi->statistics; @@ -991,9 +991,13 @@ static int spi_transfer_one_message(struct spi_master *master, if (ret > 0) { ret = 0; - ms = xfer->len * 8 * 1000 / xfer->speed_hz; + ms = 8LL * 1000LL * xfer->len; + do_div(ms, xfer->speed_hz); ms += ms + 100; /* some tolerance */ + if (ms > UINT_MAX) + ms = UINT_MAX; + ms = wait_for_completion_timeout(&master->xfer_completion, msecs_to_jiffies(ms)); } -- cgit v0.10.2 From a41bd25ae67d3e4052c7f00ee9f2b4ba9219309e Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Thu, 25 Aug 2016 18:42:35 +0200 Subject: sunrpc: fix UDP memory accounting The commit f9b2ee714c5c ("SUNRPC: Move UDP receive data path into a workqueue context"), as a side effect, moved the skb_free_datagram() call outside the scope of the related socket lock, but UDP sockets require such lock to be held for proper memory accounting. Fix it by replacing skb_free_datagram() with skb_free_datagram_locked(). Fixes: f9b2ee714c5c ("SUNRPC: Move UDP receive data path into a workqueue context") Reported-and-tested-by: Jan Stancek Signed-off-by: Paolo Abeni Cc: stable@vger.kernel.org # 4.4+ Signed-off-by: Trond Myklebust diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 8ede3bc..bf16883 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1074,7 +1074,7 @@ static void xs_udp_data_receive(struct sock_xprt *transport) skb = skb_recv_datagram(sk, 0, 1, &err); if (skb != NULL) { xs_udp_data_read_skb(&transport->xprt, sk, skb); - skb_free_datagram(sk, skb); + skb_free_datagram_locked(sk, skb); continue; } if (!test_and_clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state)) -- cgit v0.10.2 From 36afb176d3c9580651d7f410ed7f000ec48b5137 Mon Sep 17 00:00:00 2001 From: "Kweh, Hock Leong" Date: Mon, 29 Aug 2016 18:50:56 +0800 Subject: iio: fix pressure data output unit in hid-sensor-attributes According to IIO ABI definition, IIO_PRESSURE data output unit is kilopascal: http://lxr.free-electrons.com/source/Documentation/ABI/testing/sysfs-bus-iio This patch fix output unit of HID pressure sensor IIO driver from pascal to kilopascal to follow IIO ABI definition. Signed-off-by: Kweh, Hock Leong Reviewed-by: Srinivas Pandruvada Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c index e81f434..dc33c1d 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c @@ -56,8 +56,8 @@ static struct { {HID_USAGE_SENSOR_ALS, 0, 1, 0}, {HID_USAGE_SENSOR_ALS, HID_USAGE_SENSOR_UNITS_LUX, 1, 0}, - {HID_USAGE_SENSOR_PRESSURE, 0, 100000, 0}, - {HID_USAGE_SENSOR_PRESSURE, HID_USAGE_SENSOR_UNITS_PASCAL, 1, 0}, + {HID_USAGE_SENSOR_PRESSURE, 0, 100, 0}, + {HID_USAGE_SENSOR_PRESSURE, HID_USAGE_SENSOR_UNITS_PASCAL, 0, 1000}, }; static int pow_10(unsigned power) -- cgit v0.10.2 From c49edecd513693ea7530ab18efbd7d6d5b7cbf90 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 3 Sep 2016 12:05:31 -0400 Subject: NFS: Fix error reporting in nfs_file_write() When doing O_DSYNC writes, the actual write errors are reported through generic_write_sync(), so we must test the result. Reported-by: J. R. Okajima Fixes: 18290650b1c8 ("NFS: Move buffered I/O locking into nfs_file_write()") Signed-off-by: Trond Myklebust diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 7d62097..ca699dd 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -657,7 +657,10 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) if (result <= 0) goto out; - written = generic_write_sync(iocb, result); + result = generic_write_sync(iocb, result); + if (result < 0) + goto out; + written = result; iocb->ki_pos += written; /* Return error values */ -- cgit v0.10.2 From bf0291dd2267a2b9a4cd74d65249553d11bb45d6 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 3 Sep 2016 10:39:51 -0400 Subject: pNFS: Ensure LAYOUTGET and LAYOUTRETURN are properly serialised According to RFC5661, the client is responsible for serialising LAYOUTGET and LAYOUTRETURN to avoid ambiguity. Consider the case where we send both in parallel. Client Server ====== ====== LAYOUTGET(seqid=X) LAYOUTRETURN(seqid=X) LAYOUTGET return seqid=X+1 LAYOUTRETURN return seqid=X+2 Process LAYOUTRETURN Forget layout stateid Process LAYOUTGET Set seqid=X+1 The client processes the layoutget/layoutreturn in the wrong order, and since the result of the layoutreturn was to clear the only existing layout segment, the client forgets the layout stateid. When the LAYOUTGET comes in, it is treated as having a completely new stateid, and so the client sets the wrong sequence id... Fix is to check if there are outstanding LAYOUTGET requests before we send the LAYOUTRETURN (note that LAYOUGET will already wait if it sees an outstanding LAYOUTRETURN). Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # v4.5+ Signed-off-by: Trond Myklebust diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 6daf034..519ad32 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -899,6 +899,9 @@ pnfs_prepare_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid *stateid, enum pnfs_iomode *iomode) { + /* Serialise LAYOUTGET/LAYOUTRETURN */ + if (atomic_read(&lo->plh_outstanding) != 0) + return false; if (test_and_set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) return false; pnfs_get_layout_hdr(lo); -- cgit v0.10.2 From 2a59a0411671ef9daf17ba21da57809c696f4119 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 3 Sep 2016 11:20:04 -0400 Subject: pNFS: Fix pnfs_set_layout_stateid() to clear NFS_LAYOUT_INVALID_STID If the layout was marked as invalid, we want to ensure to initialise the layout header fields correctly. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 519ad32..cd8b5fc 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -768,17 +768,32 @@ pnfs_destroy_all_layouts(struct nfs_client *clp) pnfs_destroy_layouts_byclid(clp, false); } +static void +pnfs_clear_layoutreturn_info(struct pnfs_layout_hdr *lo) +{ + lo->plh_return_iomode = 0; + lo->plh_return_seq = 0; + clear_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags); +} + /* update lo->plh_stateid with new if is more recent */ void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new, bool update_barrier) { u32 oldseq, newseq, new_barrier = 0; - bool invalid = !pnfs_layout_is_valid(lo); oldseq = be32_to_cpu(lo->plh_stateid.seqid); newseq = be32_to_cpu(new->seqid); - if (invalid || pnfs_seqid_is_newer(newseq, oldseq)) { + + if (!pnfs_layout_is_valid(lo)) { + nfs4_stateid_copy(&lo->plh_stateid, new); + lo->plh_barrier = newseq; + pnfs_clear_layoutreturn_info(lo); + clear_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); + return; + } + if (pnfs_seqid_is_newer(newseq, oldseq)) { nfs4_stateid_copy(&lo->plh_stateid, new); /* * Because of wraparound, we want to keep the barrier @@ -790,7 +805,7 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new, new_barrier = be32_to_cpu(new->seqid); else if (new_barrier == 0) return; - if (invalid || pnfs_seqid_is_newer(new_barrier, lo->plh_barrier)) + if (pnfs_seqid_is_newer(new_barrier, lo->plh_barrier)) lo->plh_barrier = new_barrier; } @@ -886,14 +901,6 @@ void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo) rpc_wake_up(&NFS_SERVER(lo->plh_inode)->roc_rpcwaitq); } -static void -pnfs_clear_layoutreturn_info(struct pnfs_layout_hdr *lo) -{ - lo->plh_return_iomode = 0; - lo->plh_return_seq = 0; - clear_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags); -} - static bool pnfs_prepare_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid *stateid, @@ -1801,16 +1808,11 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) */ pnfs_mark_layout_stateid_invalid(lo, &free_me); - nfs4_stateid_copy(&lo->plh_stateid, &res->stateid); - lo->plh_barrier = be32_to_cpu(res->stateid.seqid); + pnfs_set_layout_stateid(lo, &res->stateid, true); } pnfs_get_lseg(lseg); pnfs_layout_insert_lseg(lo, lseg, &free_me); - if (!pnfs_layout_is_valid(lo)) { - pnfs_clear_layoutreturn_info(lo); - clear_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); - } if (res->return_on_close) -- cgit v0.10.2 From 52ec7be2e27392201adf77892ba883f68df88c99 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 3 Sep 2016 11:05:28 -0400 Subject: pNFS: Clear out all layout segments if the server unsets lrp->res.lrs_present If the server fails to set lrp->res.lrs_present in the LAYOUTRETURN reply, then that means it believes the client holds no more layout state for that file, and that the layout stateid is now invalid. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f5aecaa..c380d2e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8190,10 +8190,13 @@ static void nfs4_layoutreturn_release(void *calldata) dprintk("--> %s\n", __func__); spin_lock(&lo->plh_inode->i_lock); - pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range, - be32_to_cpu(lrp->args.stateid.seqid)); - if (lrp->res.lrs_present && pnfs_layout_is_valid(lo)) + if (lrp->res.lrs_present) { + pnfs_mark_matching_lsegs_invalid(lo, &freeme, + &lrp->args.range, + be32_to_cpu(lrp->args.stateid.seqid)); pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); + } else + pnfs_mark_layout_stateid_invalid(lo, &freeme); pnfs_clear_layoutreturn_waitbit(lo); spin_unlock(&lo->plh_inode->i_lock); nfs4_sequence_free_slot(&lrp->res.seq_res); -- cgit v0.10.2 From 1c500840934a138bd6b13556c210516e9301fbee Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Thu, 25 Aug 2016 09:45:33 -0700 Subject: iio: accel: bmc150: reset chip at init time In at least one known setup, the chip comes up in a state where reading the chip ID returns garbage unless it's been reset, due to noise on the wires during system boot. All supported chips have the same reset method, and based on the datasheets they all need 1.3 or 1.8ms to recover after reset. So, do the conservative thing here and always reset the chip. Signed-off-by: Olof Johansson Reviewed-by: Srinivas Pandruvada Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index bf17aae..59b380d 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -67,6 +67,9 @@ #define BMC150_ACCEL_REG_PMU_BW 0x10 #define BMC150_ACCEL_DEF_BW 125 +#define BMC150_ACCEL_REG_RESET 0x14 +#define BMC150_ACCEL_RESET_VAL 0xB6 + #define BMC150_ACCEL_REG_INT_MAP_0 0x19 #define BMC150_ACCEL_INT_MAP_0_BIT_SLOPE BIT(2) @@ -1497,6 +1500,14 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data) int ret, i; unsigned int val; + /* + * Reset chip to get it in a known good state. A delay of 1.8ms after + * reset is required according to the data sheets of supported chips. + */ + regmap_write(data->regmap, BMC150_ACCEL_REG_RESET, + BMC150_ACCEL_RESET_VAL); + usleep_range(1800, 2500); + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID, &val); if (ret < 0) { dev_err(dev, "Error: Reading chip id\n"); -- cgit v0.10.2 From 307fe9dd11ae44d4f8881ee449a7cbac36e1f5de Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 1 Sep 2016 11:44:35 +0200 Subject: iio: accel: kxsd9: Fix scaling bug All the scaling of the KXSD9 involves multiplication with a fraction number < 1. However the scaling value returned from IIO_INFO_SCALE was unpredictable as only the micros of the value was assigned, and not the integer part, resulting in scaling like this: $cat in_accel_scale -1057462640.011978 Fix this by assigning zero to the integer part. Cc: stable@vger.kernel.org Tested-by: Jonathan Cameron Signed-off-by: Linus Walleij Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index da5fb67..9d72d4b 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -166,6 +166,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev, ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C)); if (ret < 0) goto error_ret; + *val = 0; *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK]; ret = IIO_VAL_INT_PLUS_MICRO; break; -- cgit v0.10.2 From 4c3cb6e9a9d94d1553807854a565cd27ff4c22aa Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sat, 3 Sep 2016 10:36:00 -0700 Subject: dax: fix mapping size check pgoff_to_phys() validates that both the starting address and the length of the mapping against the resource list. We need to check for a mapping size of PMD_SIZE not PAGE_SIZE in the pmd fault path. Signed-off-by: Dan Williams diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c index 803f395..29f600f 100644 --- a/drivers/dax/dax.c +++ b/drivers/dax/dax.c @@ -459,7 +459,7 @@ static int __dax_dev_pmd_fault(struct dax_dev *dax_dev, } pgoff = linear_page_index(vma, pmd_addr); - phys = pgoff_to_phys(dax_dev, pgoff, PAGE_SIZE); + phys = pgoff_to_phys(dax_dev, pgoff, PMD_SIZE); if (phys == -1) { dev_dbg(dev, "%s: phys_to_pgoff(%#lx) failed\n", __func__, pgoff); -- cgit v0.10.2 From 3e423945ea94412283eaba8bfbe9d6e0a80b434f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 3 Sep 2016 11:02:50 -0700 Subject: devpts: return NULL pts 'priv' entry for non-devpts nodes In commit 8ead9dd54716 ("devpts: more pty driver interface cleanups") I made devpts_get_priv() just return the dentry->fs_data directly. And because I thought it wouldn't happen, I added a warning if you ever saw a pts node that wasn't on devpts. And no, that warning never triggered under any actual real use, but you can trigger it by creating nonsensical pts nodes by hand. So just revert the warning, and make devpts_get_priv() return NULL for that case like it used to. Reported-by: Dmitry Vyukov Cc: stable@vger.kernel.org # 4.6+ Cc: Eric W Biederman" Signed-off-by: Linus Torvalds diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index d116453..79a5941 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -585,7 +585,8 @@ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv) */ void *devpts_get_priv(struct dentry *dentry) { - WARN_ON_ONCE(dentry->d_sb->s_magic != DEVPTS_SUPER_MAGIC); + if (dentry->d_sb->s_magic != DEVPTS_SUPER_MAGIC) + return NULL; return dentry->d_fsdata; } -- cgit v0.10.2 From 334a8f37115bf35e38617315a360a91ac4f2b2c6 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Sep 2016 12:46:35 -0400 Subject: pNFS: Don't forget the layout stateid if there are outstanding LAYOUTGETs If there are outstanding LAYOUTGET rpc calls, then we want to ensure that we keep the layout stateid around so we that don't inadvertently pick up an old/misordered sequence id. The race is as follows: Client Server ====== ====== LAYOUTGET(seqid) LAYOUTGET(seqid) return LAYOUTGET(seqid+1) return LAYOUTGET(seqid+2) process LAYOUTGET(seqid+2) forget layout process LAYOUTGET(seqid+1) If it forgets the layout stateid before processing seqid+1, then the client will not check the layout->plh_barrier, and so will set the stateid with seqid+1. Signed-off-by: Trond Myklebust diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index cd8b5fc..2c93a85 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -365,7 +365,8 @@ pnfs_layout_remove_lseg(struct pnfs_layout_hdr *lo, /* Matched by pnfs_get_layout_hdr in pnfs_layout_insert_lseg */ atomic_dec(&lo->plh_refcount); if (list_empty(&lo->plh_segs)) { - set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); + if (atomic_read(&lo->plh_outstanding) == 0) + set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); clear_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags); } rpc_wake_up(&NFS_SERVER(inode)->roc_rpcwaitq); -- cgit v0.10.2 From 24b27fc4cdf9e10c5e79e5923b6b7c2c5c95096c Mon Sep 17 00:00:00 2001 From: Mahesh Bandewar Date: Thu, 1 Sep 2016 22:18:34 -0700 Subject: bonding: Fix bonding crash Following few steps will crash kernel - (a) Create bonding master > modprobe bonding miimon=50 (b) Create macvlan bridge on eth2 > ip link add link eth2 dev mvl0 address aa:0:0:0:0:01 \ type macvlan (c) Now try adding eth2 into the bond > echo +eth2 > /sys/class/net/bond0/bonding/slaves Bonding does lots of things before checking if the device enslaved is busy or not. In this case when the notifier call-chain sends notifications, the bond_netdev_event() assumes that the rx_handler /rx_handler_data is registered while the bond_enslave() hasn't progressed far enough to register rx_handler for the new slave. This patch adds a rx_handler check that can be performed right at the beginning of the enslave code to avoid getting into this situation. Signed-off-by: Mahesh Bandewar Acked-by: Eric Dumazet Signed-off-by: David S. Miller diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 217e8da..9599ed6 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1341,9 +1341,10 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) slave_dev->name); } - /* already enslaved */ - if (slave_dev->flags & IFF_SLAVE) { - netdev_dbg(bond_dev, "Error: Device was already enslaved\n"); + /* already in-use? */ + if (netdev_is_rx_handler_busy(slave_dev)) { + netdev_err(bond_dev, + "Error: Device is in use and cannot be enslaved\n"); return -EBUSY; } diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3a788bf..e8d79d4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3267,6 +3267,7 @@ static inline void napi_free_frags(struct napi_struct *napi) napi->skb = NULL; } +bool netdev_is_rx_handler_busy(struct net_device *dev); int netdev_rx_handler_register(struct net_device *dev, rx_handler_func_t *rx_handler, void *rx_handler_data); diff --git a/net/core/dev.c b/net/core/dev.c index dd6ce59..ea63120 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3975,6 +3975,22 @@ sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret, } /** + * netdev_is_rx_handler_busy - check if receive handler is registered + * @dev: device to check + * + * Check if a receive handler is already registered for a given device. + * Return true if there one. + * + * The caller must hold the rtnl_mutex. + */ +bool netdev_is_rx_handler_busy(struct net_device *dev) +{ + ASSERT_RTNL(); + return dev && rtnl_dereference(dev->rx_handler); +} +EXPORT_SYMBOL_GPL(netdev_is_rx_handler_busy); + +/** * netdev_rx_handler_register - register receive handler * @dev: device to register a handler for * @rx_handler: receive handler to register -- cgit v0.10.2 From 9b4cdd516dadc1b68c55ba24520194a06adff10c Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Fri, 2 Sep 2016 13:37:11 +0200 Subject: vxlan: reject multicast destination without an interface Currently, kernel accepts configurations such as: ip l a type vxlan dstport 4789 id 1 group 239.192.0.1 ip l a type vxlan dstport 4789 id 1 group ff0e::110 However, neither of those really works. In the IPv4 case, the interface cannot be brought up ("RTNETLINK answers: No such device"). This is because multicast join will be rejected without the interface being specified. In the IPv6 case, multicast wil be joined on the first interface found. This is not what the user wants as it depends on random factors (order of interfaces). Note that it's possible to add a local address but it doesn't solve anything. For IPv4, it's not considered in the multicast join (thus the same error as above is returned on ifup). This could be added but it wouldn't help for IPv6 anyway. For IPv6, we do need the interface. Just reject a configuration that sets multicast address and does not provide an interface. Nobody can depend on the previous behavior as it never worked. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index c0dda6f..6358e35 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2842,6 +2842,9 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, dev->mtu = lowerdev->mtu - (use_ipv6 ? VXLAN6_HEADROOM : VXLAN_HEADROOM); needed_headroom = lowerdev->hard_header_len; + } else if (vxlan_addr_multicast(&dst->remote_ip)) { + pr_info("multicast destination requires interface to be specified\n"); + return -EINVAL; } if (conf->mtu) { -- cgit v0.10.2 From 3555621de7fcceb79c4850f3d07d1ae4f652acf6 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Fri, 2 Sep 2016 13:37:12 +0200 Subject: vxlan: fix duplicated and wrong error messages vxlan_dev_configure outputs error messages before returning, no need to print again the same mesages in vxlan_newlink. Also, vxlan_dev_configure may return a particular error code for a different reason than vxlan_newlink thinks. Move the remaining error messages into vxlan_dev_configure and let vxlan_newlink just pass on the error code. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 6358e35..6e65832 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2782,14 +2782,15 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, struct net_device *lowerdev = NULL; if (conf->flags & VXLAN_F_GPE) { - if (conf->flags & ~VXLAN_F_ALLOWED_GPE) - return -EINVAL; /* For now, allow GPE only together with COLLECT_METADATA. * This can be relaxed later; in such case, the other side * of the PtP link will have to be provided. */ - if (!(conf->flags & VXLAN_F_COLLECT_METADATA)) + if ((conf->flags & ~VXLAN_F_ALLOWED_GPE) || + !(conf->flags & VXLAN_F_COLLECT_METADATA)) { + pr_info("unsupported combination of extensions\n"); return -EINVAL; + } vxlan_raw_setup(dev); } else { @@ -2877,8 +2878,10 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, tmp->cfg.saddr.sa.sa_family == AF_INET6) == use_ipv6 && tmp->cfg.dst_port == vxlan->cfg.dst_port && (tmp->flags & VXLAN_F_RCV_FLAGS) == - (vxlan->flags & VXLAN_F_RCV_FLAGS)) - return -EEXIST; + (vxlan->flags & VXLAN_F_RCV_FLAGS)) { + pr_info("duplicate VNI %u\n", be32_to_cpu(conf->vni)); + return -EEXIST; + } } dev->ethtool_ops = &vxlan_ethtool_ops; @@ -2912,7 +2915,6 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { struct vxlan_config conf; - int err; memset(&conf, 0, sizeof(conf)); @@ -3021,26 +3023,7 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev, if (tb[IFLA_MTU]) conf.mtu = nla_get_u32(tb[IFLA_MTU]); - err = vxlan_dev_configure(src_net, dev, &conf); - switch (err) { - case -ENODEV: - pr_info("ifindex %d does not exist\n", conf.remote_ifindex); - break; - - case -EPERM: - pr_info("IPv6 is disabled via sysctl\n"); - break; - - case -EEXIST: - pr_info("duplicate VNI %u\n", be32_to_cpu(conf.vni)); - break; - - case -EINVAL: - pr_info("unsupported combination of extensions\n"); - break; - } - - return err; + return vxlan_dev_configure(src_net, dev, &conf); } static void vxlan_dellink(struct net_device *dev, struct list_head *head) -- cgit v0.10.2 From 38f7bd94a97b542de86a2be9229289717e33a7a4 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 1 Sep 2016 14:56:49 -0700 Subject: Revert "af_unix: Fix splice-bind deadlock" This reverts commit c845acb324aa85a39650a14e7696982ceea75dc1. It turns out that it just replaces one deadlock with another one: we can still get the wrong lock ordering with the readlock due to overlayfs calling back into the filesystem layer and still taking the vfs locks after the readlock. The proper solution ends up being to just split the readlock into two pieces: the bind lock (taken *outside* the vfs locks) and the IO lock (taken *inside* the filesystem locks). The two locks are independent anyway. Signed-off-by: Linus Torvalds Reviewed-by: Shmulik Ladkani Signed-off-by: David S. Miller diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index f1dffe8..433ae1b 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -954,20 +954,32 @@ fail: return NULL; } -static int unix_mknod(struct dentry *dentry, const struct path *path, umode_t mode, - struct path *res) +static int unix_mknod(const char *sun_path, umode_t mode, struct path *res) { - int err; + struct dentry *dentry; + struct path path; + int err = 0; + /* + * Get the parent directory, calculate the hash for last + * component. + */ + dentry = kern_path_create(AT_FDCWD, sun_path, &path, 0); + err = PTR_ERR(dentry); + if (IS_ERR(dentry)) + return err; - err = security_path_mknod(path, dentry, mode, 0); + /* + * All right, let's create it. + */ + err = security_path_mknod(&path, dentry, mode, 0); if (!err) { - err = vfs_mknod(d_inode(path->dentry), dentry, mode, 0); + err = vfs_mknod(d_inode(path.dentry), dentry, mode, 0); if (!err) { - res->mnt = mntget(path->mnt); + res->mnt = mntget(path.mnt); res->dentry = dget(dentry); } } - + done_path_create(&path, dentry); return err; } @@ -978,12 +990,10 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) struct unix_sock *u = unix_sk(sk); struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr; char *sun_path = sunaddr->sun_path; - int err, name_err; + int err; unsigned int hash; struct unix_address *addr; struct hlist_head *list; - struct path path; - struct dentry *dentry; err = -EINVAL; if (sunaddr->sun_family != AF_UNIX) @@ -999,34 +1009,14 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) goto out; addr_len = err; - name_err = 0; - dentry = NULL; - if (sun_path[0]) { - /* Get the parent directory, calculate the hash for last - * component. - */ - dentry = kern_path_create(AT_FDCWD, sun_path, &path, 0); - - if (IS_ERR(dentry)) { - /* delay report until after 'already bound' check */ - name_err = PTR_ERR(dentry); - dentry = NULL; - } - } - err = mutex_lock_interruptible(&u->readlock); if (err) - goto out_path; + goto out; err = -EINVAL; if (u->addr) goto out_up; - if (name_err) { - err = name_err == -EEXIST ? -EADDRINUSE : name_err; - goto out_up; - } - err = -ENOMEM; addr = kmalloc(sizeof(*addr)+addr_len, GFP_KERNEL); if (!addr) @@ -1037,11 +1027,11 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) addr->hash = hash ^ sk->sk_type; atomic_set(&addr->refcnt, 1); - if (dentry) { - struct path u_path; + if (sun_path[0]) { + struct path path; umode_t mode = S_IFSOCK | (SOCK_INODE(sock)->i_mode & ~current_umask()); - err = unix_mknod(dentry, &path, mode, &u_path); + err = unix_mknod(sun_path, mode, &path); if (err) { if (err == -EEXIST) err = -EADDRINUSE; @@ -1049,9 +1039,9 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) goto out_up; } addr->hash = UNIX_HASH_SIZE; - hash = d_real_inode(dentry)->i_ino & (UNIX_HASH_SIZE - 1); + hash = d_real_inode(path.dentry)->i_ino & (UNIX_HASH_SIZE - 1); spin_lock(&unix_table_lock); - u->path = u_path; + u->path = path; list = &unix_socket_table[hash]; } else { spin_lock(&unix_table_lock); @@ -1074,10 +1064,6 @@ out_unlock: spin_unlock(&unix_table_lock); out_up: mutex_unlock(&u->readlock); -out_path: - if (dentry) - done_path_create(&path, dentry); - out: return err; } -- cgit v0.10.2 From 6e1ce3c3451291142a57c4f3f6f999a29fb5b3bc Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 1 Sep 2016 14:43:53 -0700 Subject: af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock' Right now we use the 'readlock' both for protecting some of the af_unix IO path and for making the bind be single-threaded. The two are independent, but using the same lock makes for a nasty deadlock due to ordering with regards to filesystem locking. The bind locking would want to nest outside the VSF pathname locking, but the IO locking wants to nest inside some of those same locks. We tried to fix this earlier with commit c845acb324aa ("af_unix: Fix splice-bind deadlock") which moved the readlock inside the vfs locks, but that caused problems with overlayfs that will then call back into filesystem routines that take the lock in the wrong order anyway. Splitting the locks means that we can go back to having the bind lock be the outermost lock, and we don't have any deadlocks with lock ordering. Acked-by: Rainer Weikusat Acked-by: Al Viro Signed-off-by: Linus Torvalds Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller diff --git a/include/net/af_unix.h b/include/net/af_unix.h index 9b4c418..fd60ecc 100644 --- a/include/net/af_unix.h +++ b/include/net/af_unix.h @@ -52,7 +52,7 @@ struct unix_sock { struct sock sk; struct unix_address *addr; struct path path; - struct mutex readlock; + struct mutex iolock, bindlock; struct sock *peer; struct list_head link; atomic_long_t inflight; diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 433ae1b..8309687 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -661,11 +661,11 @@ static int unix_set_peek_off(struct sock *sk, int val) { struct unix_sock *u = unix_sk(sk); - if (mutex_lock_interruptible(&u->readlock)) + if (mutex_lock_interruptible(&u->iolock)) return -EINTR; sk->sk_peek_off = val; - mutex_unlock(&u->readlock); + mutex_unlock(&u->iolock); return 0; } @@ -779,7 +779,8 @@ static struct sock *unix_create1(struct net *net, struct socket *sock, int kern) spin_lock_init(&u->lock); atomic_long_set(&u->inflight, 0); INIT_LIST_HEAD(&u->link); - mutex_init(&u->readlock); /* single task reading lock */ + mutex_init(&u->iolock); /* single task reading lock */ + mutex_init(&u->bindlock); /* single task binding lock */ init_waitqueue_head(&u->peer_wait); init_waitqueue_func_entry(&u->peer_wake, unix_dgram_peer_wake_relay); unix_insert_socket(unix_sockets_unbound(sk), sk); @@ -848,7 +849,7 @@ static int unix_autobind(struct socket *sock) int err; unsigned int retries = 0; - err = mutex_lock_interruptible(&u->readlock); + err = mutex_lock_interruptible(&u->bindlock); if (err) return err; @@ -895,7 +896,7 @@ retry: spin_unlock(&unix_table_lock); err = 0; -out: mutex_unlock(&u->readlock); +out: mutex_unlock(&u->bindlock); return err; } @@ -1009,7 +1010,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) goto out; addr_len = err; - err = mutex_lock_interruptible(&u->readlock); + err = mutex_lock_interruptible(&u->bindlock); if (err) goto out; @@ -1063,7 +1064,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) out_unlock: spin_unlock(&unix_table_lock); out_up: - mutex_unlock(&u->readlock); + mutex_unlock(&u->bindlock); out: return err; } @@ -1955,17 +1956,17 @@ static ssize_t unix_stream_sendpage(struct socket *socket, struct page *page, if (false) { alloc_skb: unix_state_unlock(other); - mutex_unlock(&unix_sk(other)->readlock); + mutex_unlock(&unix_sk(other)->iolock); newskb = sock_alloc_send_pskb(sk, 0, 0, flags & MSG_DONTWAIT, &err, 0); if (!newskb) goto err; } - /* we must acquire readlock as we modify already present + /* we must acquire iolock as we modify already present * skbs in the sk_receive_queue and mess with skb->len */ - err = mutex_lock_interruptible(&unix_sk(other)->readlock); + err = mutex_lock_interruptible(&unix_sk(other)->iolock); if (err) { err = flags & MSG_DONTWAIT ? -EAGAIN : -ERESTARTSYS; goto err; @@ -2032,7 +2033,7 @@ alloc_skb: } unix_state_unlock(other); - mutex_unlock(&unix_sk(other)->readlock); + mutex_unlock(&unix_sk(other)->iolock); other->sk_data_ready(other); scm_destroy(&scm); @@ -2041,7 +2042,7 @@ alloc_skb: err_state_unlock: unix_state_unlock(other); err_unlock: - mutex_unlock(&unix_sk(other)->readlock); + mutex_unlock(&unix_sk(other)->iolock); err: kfree_skb(newskb); if (send_sigpipe && !(flags & MSG_NOSIGNAL)) @@ -2109,7 +2110,7 @@ static int unix_dgram_recvmsg(struct socket *sock, struct msghdr *msg, timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); do { - mutex_lock(&u->readlock); + mutex_lock(&u->iolock); skip = sk_peek_offset(sk, flags); skb = __skb_try_recv_datagram(sk, flags, &peeked, &skip, &err, @@ -2117,14 +2118,14 @@ static int unix_dgram_recvmsg(struct socket *sock, struct msghdr *msg, if (skb) break; - mutex_unlock(&u->readlock); + mutex_unlock(&u->iolock); if (err != -EAGAIN) break; } while (timeo && !__skb_wait_for_more_packets(sk, &err, &timeo, last)); - if (!skb) { /* implies readlock unlocked */ + if (!skb) { /* implies iolock unlocked */ unix_state_lock(sk); /* Signal EOF on disconnected non-blocking SEQPACKET socket. */ if (sk->sk_type == SOCK_SEQPACKET && err == -EAGAIN && @@ -2189,7 +2190,7 @@ static int unix_dgram_recvmsg(struct socket *sock, struct msghdr *msg, out_free: skb_free_datagram(sk, skb); - mutex_unlock(&u->readlock); + mutex_unlock(&u->iolock); out: return err; } @@ -2284,7 +2285,7 @@ static int unix_stream_read_generic(struct unix_stream_read_state *state) /* Lock the socket to prevent queue disordering * while sleeps in memcpy_tomsg */ - mutex_lock(&u->readlock); + mutex_lock(&u->iolock); if (flags & MSG_PEEK) skip = sk_peek_offset(sk, flags); @@ -2326,7 +2327,7 @@ again: break; } - mutex_unlock(&u->readlock); + mutex_unlock(&u->iolock); timeo = unix_stream_data_wait(sk, timeo, last, last_len); @@ -2337,7 +2338,7 @@ again: goto out; } - mutex_lock(&u->readlock); + mutex_lock(&u->iolock); goto redo; unlock: unix_state_unlock(sk); @@ -2440,7 +2441,7 @@ unlock: } } while (size); - mutex_unlock(&u->readlock); + mutex_unlock(&u->iolock); if (state->msg) scm_recv(sock, state->msg, &scm, flags); else @@ -2481,9 +2482,9 @@ static ssize_t skb_unix_socket_splice(struct sock *sk, int ret; struct unix_sock *u = unix_sk(sk); - mutex_unlock(&u->readlock); + mutex_unlock(&u->iolock); ret = splice_to_pipe(pipe, spd); - mutex_lock(&u->readlock); + mutex_lock(&u->iolock); return ret; } -- cgit v0.10.2 From c6935931c1894ff857616ff8549b61236a19148f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 4 Sep 2016 14:31:46 -0700 Subject: Linux 4.8-rc5 diff --git a/Makefile b/Makefile index 67f42d5..a4e6cc5 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 4 PATCHLEVEL = 8 SUBLEVEL = 0 -EXTRAVERSION = -rc4 +EXTRAVERSION = -rc5 NAME = Psychotic Stoned Sheep # *DOCUMENTATION* -- cgit v0.10.2 From f065e9e4addd75c21bb976bb2558648bf4f61de6 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 31 Aug 2016 10:56:48 -0300 Subject: ARM: dts: imx6qdl: Fix SPDIF regression Commit 833f2cbf7091 ("ARM: dts: imx6: change the core clock of spdif") changed many more clocks than only the SPDIF core clock as stated in the commit message. The MLB clock has been added and this causes SPDIF regression as reported by Xavi Drudis Ferran and also in this forum post: https://forum.digikey.com/thread/34240 The MX6Q Reference Manual does not mention that MLB is a clock related to SPDIF, so change it back to a dummy clock to restore SPDIF functionality. Thanks to Ambika for providing the fix at: https://community.nxp.com/thread/387131 Fixes: 833f2cbf7091 ("ARM: dts: imx6: change the core clock of spdif") Cc: # 4.4.x Reported-by: Xavi Drudis Ferran Signed-off-by: Fabio Estevam Tested-by: Xavi Drudis Ferran Signed-off-by: Shawn Guo diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index b620ac8..b13b0b2 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -243,7 +243,7 @@ clocks = <&clks IMX6QDL_CLK_SPDIF_GCLK>, <&clks IMX6QDL_CLK_OSC>, <&clks IMX6QDL_CLK_SPDIF>, <&clks IMX6QDL_CLK_ASRC>, <&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_ESAI_EXTAL>, - <&clks IMX6QDL_CLK_IPG>, <&clks IMX6QDL_CLK_MLB>, + <&clks IMX6QDL_CLK_IPG>, <&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_DUMMY>, <&clks IMX6QDL_CLK_SPBA>; clock-names = "core", "rxtx0", "rxtx1", "rxtx2", -- cgit v0.10.2 From cc2187a6e037bc64404f63c6d650ff263c2200c0 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Sun, 4 Sep 2016 11:37:36 +0200 Subject: x86/microcode/AMD: Fix load of builtin microcode with randomized memory We do not need to add the randomization offset when the microcode is built in. Reported-and-tested-by: Emanuel Czirai Signed-off-by: Borislav Petkov Link: http://lkml.kernel.org/r/20160904093736.GA11939@pd.tnic Signed-off-by: Thomas Gleixner diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c index b816971..620ab06 100644 --- a/arch/x86/kernel/cpu/microcode/amd.c +++ b/arch/x86/kernel/cpu/microcode/amd.c @@ -54,6 +54,7 @@ static LIST_HEAD(pcache); */ static u8 *container; static size_t container_size; +static bool ucode_builtin; static u32 ucode_new_rev; static u8 amd_ucode_patch[PATCH_MAX_SIZE]; @@ -281,18 +282,22 @@ static bool __init load_builtin_amd_microcode(struct cpio_data *cp, void __init load_ucode_amd_bsp(unsigned int family) { struct cpio_data cp; + bool *builtin; void **data; size_t *size; #ifdef CONFIG_X86_32 data = (void **)__pa_nodebug(&ucode_cpio.data); size = (size_t *)__pa_nodebug(&ucode_cpio.size); + builtin = (bool *)__pa_nodebug(&ucode_builtin); #else data = &ucode_cpio.data; size = &ucode_cpio.size; + builtin = &ucode_builtin; #endif - if (!load_builtin_amd_microcode(&cp, family)) + *builtin = load_builtin_amd_microcode(&cp, family); + if (!*builtin) cp = find_ucode_in_initrd(); if (!(cp.data && cp.size)) @@ -373,7 +378,8 @@ void load_ucode_amd_ap(void) return; /* Add CONFIG_RANDOMIZE_MEMORY offset. */ - cont += PAGE_OFFSET - __PAGE_OFFSET_BASE; + if (!ucode_builtin) + cont += PAGE_OFFSET - __PAGE_OFFSET_BASE; eax = cpuid_eax(0x00000001); eq = (struct equiv_cpu_entry *)(cont + CONTAINER_HDR_SZ); @@ -439,7 +445,8 @@ int __init save_microcode_in_initrd_amd(void) container = cont_va; /* Add CONFIG_RANDOMIZE_MEMORY offset. */ - container += PAGE_OFFSET - __PAGE_OFFSET_BASE; + if (!ucode_builtin) + container += PAGE_OFFSET - __PAGE_OFFSET_BASE; eax = cpuid_eax(0x00000001); eax = ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff); -- cgit v0.10.2 From d7127b5e5fa0551be21b86640f1648b224e36d43 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 26 Aug 2016 08:16:00 +0200 Subject: locking/barriers: Don't use sizeof(void) in lockless_dereference() My previous commit: 112dc0c8069e ("locking/barriers: Suppress sparse warnings in lockless_dereference()") caused sparse to complain that (in radix-tree.h) we use sizeof(void) since that rcu_dereference()s a void *. Really, all we need is to have the expression *p in here somewhere to make sure p is a pointer type, and sizeof(*p) was the thing that came to my mind first to make sure that's done without really doing anything at runtime. Another thing I had considered was using typeof(*p), but obviously we can't just declare a typeof(*p) variable either, since that may end up being void. Declaring a variable as typeof(*p)* gets around that, and still checks that typeof(*p) is valid, so do that. This type construction can't be done for _________p1 because that will actually be used and causes sparse address space warnings, so keep a separate unused variable for it. Reported-by: Fengguang Wu Signed-off-by: Johannes Berg Signed-off-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: Paul E . McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: kbuild-all@01.org Fixes: 112dc0c8069e ("locking/barriers: Suppress sparse warnings in lockless_dereference()") Link: http://lkml.kernel.org/r/1472192160-4049-1-git-send-email-johannes@sipsolutions.net Signed-off-by: Ingo Molnar diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 436aa4e..6685698 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -527,13 +527,14 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s * object's lifetime is managed by something other than RCU. That * "something other" might be reference counting or simple immortality. * - * The seemingly unused size_t variable is to validate @p is indeed a pointer - * type by making sure it can be dereferenced. + * The seemingly unused variable ___typecheck_p validates that @p is + * indeed a pointer type by using a pointer to typeof(*p) as the type. + * Taking a pointer to typeof(*p) again is needed in case p is void *. */ #define lockless_dereference(p) \ ({ \ typeof(p) _________p1 = READ_ONCE(p); \ - size_t __maybe_unused __size_of_ptr = sizeof(*(p)); \ + typeof(*(p)) *___typecheck_p __maybe_unused; \ smp_read_barrier_depends(); /* Dependency order vs. p above. */ \ (_________p1); \ }) -- cgit v0.10.2 From 58763148758057ffc447bf990321d3ea86d199a0 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 30 Aug 2016 10:15:03 +0200 Subject: perf/core: Remove WARN from perf_event_read() This effectively reverts commit: 71e7bc2bab77 ("perf/core: Check return value of the perf_event_read() IPI") ... and puts in a comment explaining why we ignore the return value. Reported-by: Vegard Nossum Signed-off-by: Peter Zijlstra (Intel) Cc: David Carrillo-Cisneros Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Fixes: 71e7bc2bab77 ("perf/core: Check return value of the perf_event_read() IPI") Signed-off-by: Ingo Molnar diff --git a/kernel/events/core.c b/kernel/events/core.c index 3cfabdf..07ac859 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3549,10 +3549,18 @@ static int perf_event_read(struct perf_event *event, bool group) .group = group, .ret = 0, }; - ret = smp_call_function_single(event->oncpu, __perf_event_read, &data, 1); - /* The event must have been read from an online CPU: */ - WARN_ON_ONCE(ret); - ret = ret ? : data.ret; + /* + * Purposely ignore the smp_call_function_single() return + * value. + * + * If event->oncpu isn't a valid CPU it means the event got + * scheduled out and that will have updated the event count. + * + * Therefore, either way, we'll have an up-to-date event count + * after this. + */ + (void)smp_call_function_single(event->oncpu, __perf_event_read, &data, 1); + ret = data.ret; } else if (event->state == PERF_EVENT_STATE_INACTIVE) { struct perf_event_context *ctx = event->ctx; unsigned long flags; -- cgit v0.10.2 From 135e8c9250dd5c8c9aae5984fde6f230d0cbfeaf Mon Sep 17 00:00:00 2001 From: Balbir Singh Date: Mon, 5 Sep 2016 13:16:40 +1000 Subject: sched/core: Fix a race between try_to_wake_up() and a woken up task The origin of the issue I've seen is related to a missing memory barrier between check for task->state and the check for task->on_rq. The task being woken up is already awake from a schedule() and is doing the following: do { schedule() set_current_state(TASK_(UN)INTERRUPTIBLE); } while (!cond); The waker, actually gets stuck doing the following in try_to_wake_up(): while (p->on_cpu) cpu_relax(); Analysis: The instance I've seen involves the following race: CPU1 CPU2 while () { if (cond) break; do { schedule(); set_current_state(TASK_UN..) } while (!cond); wakeup_routine() spin_lock_irqsave(wait_lock) raw_spin_lock_irqsave(wait_lock) wake_up_process() } try_to_wake_up() set_current_state(TASK_RUNNING); .. list_del(&waiter.list); CPU2 wakes up CPU1, but before it can get the wait_lock and set current state to TASK_RUNNING the following occurs: CPU3 wakeup_routine() raw_spin_lock_irqsave(wait_lock) if (!list_empty) wake_up_process() try_to_wake_up() raw_spin_lock_irqsave(p->pi_lock) .. if (p->on_rq && ttwu_wakeup()) .. while (p->on_cpu) cpu_relax() .. CPU3 tries to wake up the task on CPU1 again since it finds it on the wait_queue, CPU1 is spinning on wait_lock, but immediately after CPU2, CPU3 got it. CPU3 checks the state of p on CPU1, it is TASK_UNINTERRUPTIBLE and the task is spinning on the wait_lock. Interestingly since p->on_rq is checked under pi_lock, I've noticed that try_to_wake_up() finds p->on_rq to be 0. This was the most confusing bit of the analysis, but p->on_rq is changed under runqueue lock, rq_lock, the p->on_rq check is not reliable without this fix IMHO. The race is visible (based on the analysis) only when ttwu_queue() does a remote wakeup via ttwu_queue_remote. In which case the p->on_rq change is not done uder the pi_lock. The result is that after a while the entire system locks up on the raw_spin_irqlock_save(wait_lock) and the holder spins infintely Reproduction of the issue: The issue can be reproduced after a long run on my system with 80 threads and having to tweak available memory to very low and running memory stress-ng mmapfork test. It usually takes a long time to reproduce. I am trying to work on a test case that can reproduce the issue faster, but thats work in progress. I am still testing the changes on my still in a loop and the tests seem OK thus far. Big thanks to Benjamin and Nick for helping debug this as well. Ben helped catch the missing barrier, Nick caught every missing bit in my theory. Signed-off-by: Balbir Singh [ Updated comment to clarify matching barriers. Many architectures do not have a full barrier in switch_to() so that cannot be relied upon. ] Signed-off-by: Peter Zijlstra (Intel) Acked-by: Benjamin Herrenschmidt Cc: Alexey Kardashevskiy Cc: Linus Torvalds Cc: Nicholas Piggin Cc: Nicholas Piggin Cc: Oleg Nesterov Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Link: http://lkml.kernel.org/r/e02cce7b-d9ca-1ad0-7a61-ea97c7582b37@gmail.com Signed-off-by: Ingo Molnar diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 2a906f2..44817c6 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2016,6 +2016,28 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) success = 1; /* we're going to change ->state */ cpu = task_cpu(p); + /* + * Ensure we load p->on_rq _after_ p->state, otherwise it would + * be possible to, falsely, observe p->on_rq == 0 and get stuck + * in smp_cond_load_acquire() below. + * + * sched_ttwu_pending() try_to_wake_up() + * [S] p->on_rq = 1; [L] P->state + * UNLOCK rq->lock -----. + * \ + * +--- RMB + * schedule() / + * LOCK rq->lock -----' + * UNLOCK rq->lock + * + * [task p] + * [S] p->state = UNINTERRUPTIBLE [L] p->on_rq + * + * Pairs with the UNLOCK+LOCK on rq->lock from the + * last wakeup of our task and the schedule that got our task + * current. + */ + smp_rmb(); if (p->on_rq && ttwu_remote(p, wake_flags)) goto stat; -- cgit v0.10.2 From d4c4fed08f31f3746000c46cb1b20bed2959547a Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 15 Aug 2016 09:05:45 -0600 Subject: efi: Make for_each_efi_memory_desc_in_map() cope with running on Xen While commit 55f1ea15216 ("efi: Fix for_each_efi_memory_desc_in_map() for empty memmaps") made an attempt to deal with empty memory maps, it didn't address the case where the map field never gets set, as is apparently the case when running under Xen. Reported-by: Tested-by: Cc: Vitaly Kuznetsov Cc: Jiri Slaby Cc: Mark Rutland Cc: # v4.7+ Signed-off-by: Jan Beulich [ Guard the loop with a NULL check instead of pointer underflow ] Signed-off-by: Matt Fleming diff --git a/include/linux/efi.h b/include/linux/efi.h index 7f5a582..23cd3ce 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -946,7 +946,7 @@ extern int efi_memattr_apply_permissions(struct mm_struct *mm, /* Iterate through an efi_memory_map */ #define for_each_efi_memory_desc_in_map(m, md) \ for ((md) = (m)->map; \ - ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ + (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ (md) = (void *)(md) + (m)->desc_size) /** -- cgit v0.10.2 From 4af9ed578a50cd331a725322cfd9d555251ce788 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 30 Aug 2016 12:41:37 +0200 Subject: efi: Fix handling error value in fdt_find_uefi_params of_get_flat_dt_subnode_by_name can return negative value in case of error. Assigning the result to unsigned variable and checking if the variable is lesser than zero is incorrect and always false. The patch fixes it by using signed variable to check the result. The problem has been detected using semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci Signed-off-by: Andrzej Hajda Cc: Bartlomiej Zolnierkiewicz Cc: Marek Szyprowski Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Shawn Lin Cc: Mark Rutland Cc: Signed-off-by: Matt Fleming diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 5a2631a..7dd2e2d 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -657,9 +657,12 @@ static int __init fdt_find_uefi_params(unsigned long node, const char *uname, } if (subnode) { - node = of_get_flat_dt_subnode_by_name(node, subnode); - if (node < 0) + int err = of_get_flat_dt_subnode_by_name(node, subnode); + + if (err < 0) return 0; + + node = err; } return __find_uefi_params(node, info, dt_params[i].params); -- cgit v0.10.2 From 9d7aba7786b6c9eec6d083e43fd639228c400c3a Mon Sep 17 00:00:00 2001 From: John Youn Date: Fri, 26 Aug 2016 18:43:01 -0700 Subject: Revert "usb: dwc3: gadget: always decrement by 1" This reverts commit 6f8245b4e37c ("usb: dwc3: gadget: always decrement by 1"). We can't always decrement this value. We should decrement only if the calculation of free slots results in a LINK TRB being among one of the free slots (dequeue < enqueue). Otherwise, if the LINK TRB is not among the free slots then it should not be decremented. Signed-off-by: John Youn Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7a8d3d8..122e64d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -884,9 +884,12 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) return DWC3_TRB_NUM - 1; } - trbs_left = dep->trb_dequeue - dep->trb_enqueue - 1; + trbs_left = dep->trb_dequeue - dep->trb_enqueue; trbs_left &= (DWC3_TRB_NUM - 1); + if (dep->trb_dequeue < dep->trb_enqueue) + trbs_left--; + return trbs_left; } -- cgit v0.10.2 From b2f1eaaee564c5593c303f4d15d827924cb6d20d Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Tue, 23 Aug 2016 21:11:13 +0900 Subject: usb: gadget: udc: renesas-usb3: clear VBOUT bit in DRD_CON This driver should clear the bit. Otherwise, the VBUS will output wrongly if the usb port on a board has VBUS output capability. Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller") Cc: # v4.5+ Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 93a3bec..fb8fc34 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -106,6 +106,7 @@ /* DRD_CON */ #define DRD_CON_PERI_CON BIT(24) +#define DRD_CON_VBOUT BIT(0) /* USB_INT_ENA_1 and USB_INT_STA_1 */ #define USB_INT_1_B3_PLLWKUP BIT(31) @@ -363,6 +364,7 @@ static void usb3_init_epc_registers(struct renesas_usb3 *usb3) { /* FIXME: How to change host / peripheral mode as well? */ usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); + usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); usb3_write(usb3, ~0, USB3_USB_INT_STA_1); usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); -- cgit v0.10.2 From 7c113f7df710df2aed63709815e518608dbd338c Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 22 Aug 2016 22:45:36 -0300 Subject: usb: phy: phy-generic: Check clk_prepare_enable() error clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of failure. Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 980c9de..427efb5 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -144,14 +144,18 @@ static irqreturn_t nop_gpio_vbus_thread(int irq, void *data) int usb_gen_phy_init(struct usb_phy *phy) { struct usb_phy_generic *nop = dev_get_drvdata(phy->dev); + int ret; if (!IS_ERR(nop->vcc)) { if (regulator_enable(nop->vcc)) dev_err(phy->dev, "Failed to enable power\n"); } - if (!IS_ERR(nop->clk)) - clk_prepare_enable(nop->clk); + if (!IS_ERR(nop->clk)) { + ret = clk_prepare_enable(nop->clk); + if (ret) + return ret; + } nop_reset(nop); -- cgit v0.10.2 From 519d8bd4b5d3d82c413eac5bb42b106bb4b9ec15 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 29 Aug 2016 18:00:38 +0900 Subject: usb: renesas_usbhs: fix clearing the {BRDY,BEMP}STS condition The previous driver is possible to stop the transfer wrongly. For example: 1) An interrupt happens, but not BRDY interruption. 2) Read INTSTS0. And than state->intsts0 is not set to BRDY. 3) BRDY is set to 1 here. 4) Read BRDYSTS. 5) Clear the BRDYSTS. And then. the BRDY is cleared wrongly. Remarks: - The INTSTS0.BRDY is read only. - If any bits of BRDYSTS are set to 1, the BRDY is set to 1. - If BRDYSTS is 0, the BRDY is set to 0. So, this patch adds condition to avoid such situation. (And about NRDYSTS, this is not used for now. But, avoiding any side effects, this patch doesn't touch it.) Fixes: d5c6a1e024dd ("usb: renesas_usbhs: fixup interrupt status clear method") Cc: # v3.8+ Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c index d4be5d5..28965ef 100644 --- a/drivers/usb/renesas_usbhs/mod.c +++ b/drivers/usb/renesas_usbhs/mod.c @@ -282,9 +282,16 @@ static irqreturn_t usbhs_interrupt(int irq, void *data) if (usbhs_mod_is_host(priv)) usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC); - usbhs_write(priv, BRDYSTS, ~irq_state.brdysts); + /* + * The driver should not clear the xxxSTS after the line of + * "call irq callback functions" because each "if" statement is + * possible to call the callback function for avoiding any side effects. + */ + if (irq_state.intsts0 & BRDY) + usbhs_write(priv, BRDYSTS, ~irq_state.brdysts); usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts); - usbhs_write(priv, BEMPSTS, ~irq_state.bempsts); + if (irq_state.intsts0 & BEMP) + usbhs_write(priv, BEMPSTS, ~irq_state.bempsts); /* * call irq callback functions -- cgit v0.10.2 From dadb57abc37499f565b23933dbf49b435c3ba8af Mon Sep 17 00:00:00 2001 From: Jeffrey Hugo Date: Mon, 29 Aug 2016 14:38:51 -0600 Subject: efi/libstub: Allocate headspace in efi_get_memory_map() efi_get_memory_map() allocates a buffer to store the memory map that it retrieves. This buffer may need to be reused by the client after ExitBootServices() is called, at which point allocations are not longer permitted. To support this usecase, provide the allocated buffer size back to the client, and allocate some additional headroom to account for any reasonable growth in the map that is likely to happen between the call to efi_get_memory_map() and the client reusing the buffer. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index ff574da..c5b7c7b 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -1008,7 +1008,7 @@ static efi_status_t exit_boot(struct boot_params *boot_params, void *handle, bool is64) { struct efi_info *efi = &boot_params->efi_info; - unsigned long map_sz, key, desc_size; + unsigned long map_sz, key, desc_size, buff_size; efi_memory_desc_t *mem_map; struct setup_data *e820ext; const char *signature; @@ -1019,14 +1019,20 @@ static efi_status_t exit_boot(struct boot_params *boot_params, bool called_exit = false; u8 nr_entries; int i; - - nr_desc = 0; - e820ext = NULL; - e820ext_size = 0; + struct efi_boot_memmap map; + + nr_desc = 0; + e820ext = NULL; + e820ext_size = 0; + map.map = &mem_map; + map.map_size = &map_sz; + map.desc_size = &desc_size; + map.desc_ver = &desc_version; + map.key_ptr = &key; + map.buff_size = &buff_size; get_map: - status = efi_get_memory_map(sys_table, &mem_map, &map_sz, &desc_size, - &desc_version, &key); + status = efi_get_memory_map(sys_table, &map); if (status != EFI_SUCCESS) return status; diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c index 3bd127f9..29368ac 100644 --- a/drivers/firmware/efi/libstub/efi-stub-helper.c +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c @@ -41,6 +41,8 @@ static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE; #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE #endif +#define EFI_MMAP_NR_SLACK_SLOTS 8 + struct file_info { efi_file_handle_t *handle; u64 size; @@ -63,49 +65,62 @@ void efi_printk(efi_system_table_t *sys_table_arg, char *str) } } +static inline bool mmap_has_headroom(unsigned long buff_size, + unsigned long map_size, + unsigned long desc_size) +{ + unsigned long slack = buff_size - map_size; + + return slack / desc_size >= EFI_MMAP_NR_SLACK_SLOTS; +} + efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, - efi_memory_desc_t **map, - unsigned long *map_size, - unsigned long *desc_size, - u32 *desc_ver, - unsigned long *key_ptr) + struct efi_boot_memmap *map) { efi_memory_desc_t *m = NULL; efi_status_t status; unsigned long key; u32 desc_version; - *map_size = sizeof(*m) * 32; + *map->desc_size = sizeof(*m); + *map->map_size = *map->desc_size * 32; + *map->buff_size = *map->map_size; again: - /* - * Add an additional efi_memory_desc_t because we're doing an - * allocation which may be in a new descriptor region. - */ - *map_size += sizeof(*m); status = efi_call_early(allocate_pool, EFI_LOADER_DATA, - *map_size, (void **)&m); + *map->map_size, (void **)&m); if (status != EFI_SUCCESS) goto fail; - *desc_size = 0; + *map->desc_size = 0; key = 0; - status = efi_call_early(get_memory_map, map_size, m, - &key, desc_size, &desc_version); - if (status == EFI_BUFFER_TOO_SMALL) { + status = efi_call_early(get_memory_map, map->map_size, m, + &key, map->desc_size, &desc_version); + if (status == EFI_BUFFER_TOO_SMALL || + !mmap_has_headroom(*map->buff_size, *map->map_size, + *map->desc_size)) { efi_call_early(free_pool, m); + /* + * Make sure there is some entries of headroom so that the + * buffer can be reused for a new map after allocations are + * no longer permitted. Its unlikely that the map will grow to + * exceed this headroom once we are ready to trigger + * ExitBootServices() + */ + *map->map_size += *map->desc_size * EFI_MMAP_NR_SLACK_SLOTS; + *map->buff_size = *map->map_size; goto again; } if (status != EFI_SUCCESS) efi_call_early(free_pool, m); - if (key_ptr && status == EFI_SUCCESS) - *key_ptr = key; - if (desc_ver && status == EFI_SUCCESS) - *desc_ver = desc_version; + if (map->key_ptr && status == EFI_SUCCESS) + *map->key_ptr = key; + if (map->desc_ver && status == EFI_SUCCESS) + *map->desc_ver = desc_version; fail: - *map = m; + *map->map = m; return status; } @@ -113,13 +128,20 @@ fail: unsigned long get_dram_base(efi_system_table_t *sys_table_arg) { efi_status_t status; - unsigned long map_size; + unsigned long map_size, buff_size; unsigned long membase = EFI_ERROR; struct efi_memory_map map; efi_memory_desc_t *md; + struct efi_boot_memmap boot_map; - status = efi_get_memory_map(sys_table_arg, (efi_memory_desc_t **)&map.map, - &map_size, &map.desc_size, NULL, NULL); + boot_map.map = (efi_memory_desc_t **)&map.map; + boot_map.map_size = &map_size; + boot_map.desc_size = &map.desc_size; + boot_map.desc_ver = NULL; + boot_map.key_ptr = NULL; + boot_map.buff_size = &buff_size; + + status = efi_get_memory_map(sys_table_arg, &boot_map); if (status != EFI_SUCCESS) return membase; @@ -144,15 +166,22 @@ efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, unsigned long size, unsigned long align, unsigned long *addr, unsigned long max) { - unsigned long map_size, desc_size; + unsigned long map_size, desc_size, buff_size; efi_memory_desc_t *map; efi_status_t status; unsigned long nr_pages; u64 max_addr = 0; int i; + struct efi_boot_memmap boot_map; + + boot_map.map = ↦ + boot_map.map_size = &map_size; + boot_map.desc_size = &desc_size; + boot_map.desc_ver = NULL; + boot_map.key_ptr = NULL; + boot_map.buff_size = &buff_size; - status = efi_get_memory_map(sys_table_arg, &map, &map_size, &desc_size, - NULL, NULL); + status = efi_get_memory_map(sys_table_arg, &boot_map); if (status != EFI_SUCCESS) goto fail; @@ -230,14 +259,21 @@ efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, unsigned long size, unsigned long align, unsigned long *addr) { - unsigned long map_size, desc_size; + unsigned long map_size, desc_size, buff_size; efi_memory_desc_t *map; efi_status_t status; unsigned long nr_pages; int i; + struct efi_boot_memmap boot_map; + + boot_map.map = ↦ + boot_map.map_size = &map_size; + boot_map.desc_size = &desc_size; + boot_map.desc_ver = NULL; + boot_map.key_ptr = NULL; + boot_map.buff_size = &buff_size; - status = efi_get_memory_map(sys_table_arg, &map, &map_size, &desc_size, - NULL, NULL); + status = efi_get_memory_map(sys_table_arg, &boot_map); if (status != EFI_SUCCESS) goto fail; diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c index e58abfa..bec0fa8 100644 --- a/drivers/firmware/efi/libstub/fdt.c +++ b/drivers/firmware/efi/libstub/fdt.c @@ -175,13 +175,21 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, unsigned long fdt_addr, unsigned long fdt_size) { - unsigned long map_size, desc_size; + unsigned long map_size, desc_size, buff_size; u32 desc_ver; unsigned long mmap_key; efi_memory_desc_t *memory_map, *runtime_map; unsigned long new_fdt_size; efi_status_t status; int runtime_entry_count = 0; + struct efi_boot_memmap map; + + map.map = &runtime_map; + map.map_size = &map_size; + map.desc_size = &desc_size; + map.desc_ver = &desc_ver; + map.key_ptr = &mmap_key; + map.buff_size = &buff_size; /* * Get a copy of the current memory map that we will use to prepare @@ -189,8 +197,7 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, * subsequent allocations adding entries, since they could not affect * the number of EFI_MEMORY_RUNTIME regions. */ - status = efi_get_memory_map(sys_table, &runtime_map, &map_size, - &desc_size, &desc_ver, &mmap_key); + status = efi_get_memory_map(sys_table, &map); if (status != EFI_SUCCESS) { pr_efi_err(sys_table, "Unable to retrieve UEFI memory map.\n"); return status; @@ -199,6 +206,7 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, pr_efi(sys_table, "Exiting boot services and installing virtual address map...\n"); + map.map = &memory_map; /* * Estimate size of new FDT, and allocate memory for it. We * will allocate a bigger buffer if this ends up being too @@ -218,8 +226,7 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, * we can get the memory map key needed for * exit_boot_services(). */ - status = efi_get_memory_map(sys_table, &memory_map, &map_size, - &desc_size, &desc_ver, &mmap_key); + status = efi_get_memory_map(sys_table, &map); if (status != EFI_SUCCESS) goto fail_free_new_fdt; diff --git a/drivers/firmware/efi/libstub/random.c b/drivers/firmware/efi/libstub/random.c index 53f6d3f..0c9f58c 100644 --- a/drivers/firmware/efi/libstub/random.c +++ b/drivers/firmware/efi/libstub/random.c @@ -73,12 +73,20 @@ efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg, unsigned long random_seed) { unsigned long map_size, desc_size, total_slots = 0, target_slot; + unsigned long buff_size; efi_status_t status; efi_memory_desc_t *memory_map; int map_offset; + struct efi_boot_memmap map; - status = efi_get_memory_map(sys_table_arg, &memory_map, &map_size, - &desc_size, NULL, NULL); + map.map = &memory_map; + map.map_size = &map_size; + map.desc_size = &desc_size; + map.desc_ver = NULL; + map.key_ptr = NULL; + map.buff_size = &buff_size; + + status = efi_get_memory_map(sys_table_arg, &map); if (status != EFI_SUCCESS) return status; diff --git a/include/linux/efi.h b/include/linux/efi.h index 23cd3ce..943fee5 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -118,6 +118,15 @@ typedef struct { u32 imagesize; } efi_capsule_header_t; +struct efi_boot_memmap { + efi_memory_desc_t **map; + unsigned long *map_size; + unsigned long *desc_size; + u32 *desc_ver; + unsigned long *key_ptr; + unsigned long *buff_size; +}; + /* * EFI capsule flags */ @@ -1371,11 +1380,7 @@ char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, efi_loaded_image_t *image, int *cmd_line_len); efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, - efi_memory_desc_t **map, - unsigned long *map_size, - unsigned long *desc_size, - u32 *desc_ver, - unsigned long *key_ptr); + struct efi_boot_memmap *map); efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, unsigned long size, unsigned long align, -- cgit v0.10.2 From fc07716ba803483be91bc4b2344f9c84985e6f07 Mon Sep 17 00:00:00 2001 From: Jeffrey Hugo Date: Mon, 29 Aug 2016 14:38:52 -0600 Subject: efi/libstub: Introduce ExitBootServices helper The spec allows ExitBootServices to fail with EFI_INVALID_PARAMETER if a race condition has occurred where the EFI has updated the memory map after the stub grabbed a reference to the map. The spec defines a retry proceedure with specific requirements to handle this scenario. This scenario was previously observed on x86 - commit d3768d885c6c ("x86, efi: retry ExitBootServices() on failure") but the current fix is not spec compliant and the scenario is now observed on the Qualcomm Technologies QDF2432 via the FDT stub which does not handle the error and thus causes boot failures. The user will notice the boot failure as the kernel is not executed and the system may drop back to a UEFI shell, but will be unresponsive to input and the system will require a power cycle to recover. Add a helper to the stub library that correctly adheres to the spec in the case of EFI_INVALID_PARAMETER from ExitBootServices and can be universally used across all stub implementations. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c index 29368ac..aded106 100644 --- a/drivers/firmware/efi/libstub/efi-stub-helper.c +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c @@ -740,3 +740,76 @@ char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, *cmd_line_len = options_bytes; return (char *)cmdline_addr; } + +/* + * Handle calling ExitBootServices according to the requirements set out by the + * spec. Obtains the current memory map, and returns that info after calling + * ExitBootServices. The client must specify a function to perform any + * processing of the memory map data prior to ExitBootServices. A client + * specific structure may be passed to the function via priv. The client + * function may be called multiple times. + */ +efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table_arg, + void *handle, + struct efi_boot_memmap *map, + void *priv, + efi_exit_boot_map_processing priv_func) +{ + efi_status_t status; + + status = efi_get_memory_map(sys_table_arg, map); + + if (status != EFI_SUCCESS) + goto fail; + + status = priv_func(sys_table_arg, map, priv); + if (status != EFI_SUCCESS) + goto free_map; + + status = efi_call_early(exit_boot_services, handle, *map->key_ptr); + + if (status == EFI_INVALID_PARAMETER) { + /* + * The memory map changed between efi_get_memory_map() and + * exit_boot_services(). Per the UEFI Spec v2.6, Section 6.4: + * EFI_BOOT_SERVICES.ExitBootServices we need to get the + * updated map, and try again. The spec implies one retry + * should be sufficent, which is confirmed against the EDK2 + * implementation. Per the spec, we can only invoke + * get_memory_map() and exit_boot_services() - we cannot alloc + * so efi_get_memory_map() cannot be used, and we must reuse + * the buffer. For all practical purposes, the headroom in the + * buffer should account for any changes in the map so the call + * to get_memory_map() is expected to succeed here. + */ + *map->map_size = *map->buff_size; + status = efi_call_early(get_memory_map, + map->map_size, + *map->map, + map->key_ptr, + map->desc_size, + map->desc_ver); + + /* exit_boot_services() was called, thus cannot free */ + if (status != EFI_SUCCESS) + goto fail; + + status = priv_func(sys_table_arg, map, priv); + /* exit_boot_services() was called, thus cannot free */ + if (status != EFI_SUCCESS) + goto fail; + + status = efi_call_early(exit_boot_services, handle, *map->key_ptr); + } + + /* exit_boot_services() was called, thus cannot free */ + if (status != EFI_SUCCESS) + goto fail; + + return EFI_SUCCESS; + +free_map: + efi_call_early(free_pool, *map->map); +fail: + return status; +} diff --git a/include/linux/efi.h b/include/linux/efi.h index 943fee5..0148a30 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1462,4 +1462,14 @@ extern void efi_call_virt_check_flags(unsigned long flags, const char *call); arch_efi_call_virt_teardown(); \ }) +typedef efi_status_t (*efi_exit_boot_map_processing)( + efi_system_table_t *sys_table_arg, + struct efi_boot_memmap *map, + void *priv); + +efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table, + void *handle, + struct efi_boot_memmap *map, + void *priv, + efi_exit_boot_map_processing priv_func); #endif /* _LINUX_EFI_H */ -- cgit v0.10.2 From ed9cc156c42ff0c0bf9b1d09df48a12bf0873473 Mon Sep 17 00:00:00 2001 From: Jeffrey Hugo Date: Mon, 29 Aug 2016 14:38:53 -0600 Subject: efi/libstub: Use efi_exit_boot_services() in FDT The FDT code directly calls ExitBootServices. This is inadvisable as the UEFI spec details a complex set of errors, race conditions, and API interactions that the caller of ExitBootServices must get correct. The FDT code does not handle EFI_INVALID_PARAMETER as required by the spec, which causes intermittent boot failures on the Qualcomm Technologies QDF2432. Call the efi_exit_boot_services() helper intead, which handles the EFI_INVALID_PARAMETER scenario properly. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c index bec0fa8..a6a9311 100644 --- a/drivers/firmware/efi/libstub/fdt.c +++ b/drivers/firmware/efi/libstub/fdt.c @@ -152,6 +152,27 @@ fdt_set_fail: #define EFI_FDT_ALIGN EFI_PAGE_SIZE #endif +struct exit_boot_struct { + efi_memory_desc_t *runtime_map; + int *runtime_entry_count; +}; + +static efi_status_t exit_boot_func(efi_system_table_t *sys_table_arg, + struct efi_boot_memmap *map, + void *priv) +{ + struct exit_boot_struct *p = priv; + /* + * Update the memory map with virtual addresses. The function will also + * populate @runtime_map with copies of just the EFI_MEMORY_RUNTIME + * entries so that we can pass it straight to SetVirtualAddressMap() + */ + efi_get_virtmap(*map->map, *map->map_size, *map->desc_size, + p->runtime_map, p->runtime_entry_count); + + return EFI_SUCCESS; +} + /* * Allocate memory for a new FDT, then add EFI, commandline, and * initrd related fields to the FDT. This routine increases the @@ -183,6 +204,7 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, efi_status_t status; int runtime_entry_count = 0; struct efi_boot_memmap map; + struct exit_boot_struct priv; map.map = &runtime_map; map.map_size = &map_size; @@ -257,16 +279,11 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, } } - /* - * Update the memory map with virtual addresses. The function will also - * populate @runtime_map with copies of just the EFI_MEMORY_RUNTIME - * entries so that we can pass it straight into SetVirtualAddressMap() - */ - efi_get_virtmap(memory_map, map_size, desc_size, runtime_map, - &runtime_entry_count); - - /* Now we are ready to exit_boot_services.*/ - status = sys_table->boottime->exit_boot_services(handle, mmap_key); + sys_table->boottime->free_pool(memory_map); + priv.runtime_map = runtime_map; + priv.runtime_entry_count = &runtime_entry_count; + status = efi_exit_boot_services(sys_table, handle, &map, &priv, + exit_boot_func); if (status == EFI_SUCCESS) { efi_set_virtual_address_map_t *svam; -- cgit v0.10.2 From d64934019f6cc39202e2f78063709f61ca5cb364 Mon Sep 17 00:00:00 2001 From: Jeffrey Hugo Date: Mon, 29 Aug 2016 14:38:54 -0600 Subject: x86/efi: Use efi_exit_boot_services() The eboot code directly calls ExitBootServices. This is inadvisable as the UEFI spec details a complex set of errors, race conditions, and API interactions that the caller of ExitBootServices must get correct. The eboot code attempts allocations after calling ExitBootSerives which is not permitted per the spec. Call the efi_exit_boot_services() helper intead, which handles the allocation scenario properly. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index c5b7c7b..94dd4a3 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -1004,85 +1004,87 @@ static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext, return status; } +struct exit_boot_struct { + struct boot_params *boot_params; + struct efi_info *efi; + struct setup_data *e820ext; + __u32 e820ext_size; + bool is64; +}; + +static efi_status_t exit_boot_func(efi_system_table_t *sys_table_arg, + struct efi_boot_memmap *map, + void *priv) +{ + static bool first = true; + const char *signature; + __u32 nr_desc; + efi_status_t status; + struct exit_boot_struct *p = priv; + + if (first) { + nr_desc = *map->buff_size / *map->desc_size; + if (nr_desc > ARRAY_SIZE(p->boot_params->e820_map)) { + u32 nr_e820ext = nr_desc - + ARRAY_SIZE(p->boot_params->e820_map); + + status = alloc_e820ext(nr_e820ext, &p->e820ext, + &p->e820ext_size); + if (status != EFI_SUCCESS) + return status; + } + first = false; + } + + signature = p->is64 ? EFI64_LOADER_SIGNATURE : EFI32_LOADER_SIGNATURE; + memcpy(&p->efi->efi_loader_signature, signature, sizeof(__u32)); + + p->efi->efi_systab = (unsigned long)sys_table_arg; + p->efi->efi_memdesc_size = *map->desc_size; + p->efi->efi_memdesc_version = *map->desc_ver; + p->efi->efi_memmap = (unsigned long)*map->map; + p->efi->efi_memmap_size = *map->map_size; + +#ifdef CONFIG_X86_64 + p->efi->efi_systab_hi = (unsigned long)sys_table_arg >> 32; + p->efi->efi_memmap_hi = (unsigned long)*map->map >> 32; +#endif + + return EFI_SUCCESS; +} + static efi_status_t exit_boot(struct boot_params *boot_params, void *handle, bool is64) { - struct efi_info *efi = &boot_params->efi_info; unsigned long map_sz, key, desc_size, buff_size; efi_memory_desc_t *mem_map; struct setup_data *e820ext; - const char *signature; __u32 e820ext_size; - __u32 nr_desc, prev_nr_desc; efi_status_t status; __u32 desc_version; - bool called_exit = false; - u8 nr_entries; - int i; struct efi_boot_memmap map; + struct exit_boot_struct priv; + + map.map = &mem_map; + map.map_size = &map_sz; + map.desc_size = &desc_size; + map.desc_ver = &desc_version; + map.key_ptr = &key; + map.buff_size = &buff_size; + priv.boot_params = boot_params; + priv.efi = &boot_params->efi_info; + priv.e820ext = NULL; + priv.e820ext_size = 0; + priv.is64 = is64; - nr_desc = 0; - e820ext = NULL; - e820ext_size = 0; - map.map = &mem_map; - map.map_size = &map_sz; - map.desc_size = &desc_size; - map.desc_ver = &desc_version; - map.key_ptr = &key; - map.buff_size = &buff_size; - -get_map: - status = efi_get_memory_map(sys_table, &map); - + /* Might as well exit boot services now */ + status = efi_exit_boot_services(sys_table, handle, &map, &priv, + exit_boot_func); if (status != EFI_SUCCESS) return status; - prev_nr_desc = nr_desc; - nr_desc = map_sz / desc_size; - if (nr_desc > prev_nr_desc && - nr_desc > ARRAY_SIZE(boot_params->e820_map)) { - u32 nr_e820ext = nr_desc - ARRAY_SIZE(boot_params->e820_map); - - status = alloc_e820ext(nr_e820ext, &e820ext, &e820ext_size); - if (status != EFI_SUCCESS) - goto free_mem_map; - - efi_call_early(free_pool, mem_map); - goto get_map; /* Allocated memory, get map again */ - } - - signature = is64 ? EFI64_LOADER_SIGNATURE : EFI32_LOADER_SIGNATURE; - memcpy(&efi->efi_loader_signature, signature, sizeof(__u32)); - - efi->efi_systab = (unsigned long)sys_table; - efi->efi_memdesc_size = desc_size; - efi->efi_memdesc_version = desc_version; - efi->efi_memmap = (unsigned long)mem_map; - efi->efi_memmap_size = map_sz; - -#ifdef CONFIG_X86_64 - efi->efi_systab_hi = (unsigned long)sys_table >> 32; - efi->efi_memmap_hi = (unsigned long)mem_map >> 32; -#endif - - /* Might as well exit boot services now */ - status = efi_call_early(exit_boot_services, handle, key); - if (status != EFI_SUCCESS) { - /* - * ExitBootServices() will fail if any of the event - * handlers change the memory map. In which case, we - * must be prepared to retry, but only once so that - * we're guaranteed to exit on repeated failures instead - * of spinning forever. - */ - if (called_exit) - goto free_mem_map; - - called_exit = true; - efi_call_early(free_pool, mem_map); - goto get_map; - } - + e820ext = priv.e820ext; + e820ext_size = priv.e820ext_size; /* Historic? */ boot_params->alt_mem_k = 32 * 1024; @@ -1091,10 +1093,6 @@ get_map: return status; return EFI_SUCCESS; - -free_mem_map: - efi_call_early(free_pool, mem_map); - return status; } /* -- cgit v0.10.2 From 4d21cef3ea00ba3ac508eb61fb8db70e3e31df67 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Fri, 2 Sep 2016 12:33:49 +0200 Subject: KVM: s390: vsie: fix riccbd We store the address of riccbd at the wrong location, overwriting gvrd. This means that our nested guest will not be able to use runtime instrumentation. Also, a memory leak, if our KVM guest actually sets gvrd. Not noticed until now, as KVM guests never make use of gvrd and runtime instrumentation wasn't completely tested yet. Reported-by: Fan Zhang Reviewed-by: Cornelia Huck Signed-off-by: David Hildenbrand Signed-off-by: Cornelia Huck diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index c106488..d8673e2 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -584,7 +584,7 @@ static int pin_blocks(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) /* Validity 0x0044 will be checked by SIE */ if (rc) goto unpin; - scb_s->gvrd = hpa; + scb_s->riccbd = hpa; } return 0; unpin: -- cgit v0.10.2 From e1ff3dd1ae52cef5b5373c8cc4ad949c2c25a71c Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Mon, 5 Sep 2016 13:55:20 +0200 Subject: ovl: fix workdir creation Workdir creation fails in latest kernel. Fix by allowing EOPNOTSUPP as a valid return value from vfs_removexattr(XATTR_NAME_POSIX_ACL_*). Upper filesystem may not support ACL and still be perfectly able to support overlayfs. Reported-by: Martin Ziegler Signed-off-by: Miklos Szeredi Fixes: c11b9fdd6a61 ("ovl: remove posix_acl_default from workdir") Cc: diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index a4585f9..e2a94a2 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -835,11 +835,11 @@ retry: goto out_dput; err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT); - if (err && err != -ENODATA) + if (err && err != -ENODATA && err != -EOPNOTSUPP) goto out_dput; err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS); - if (err && err != -ENODATA) + if (err && err != -ENODATA && err != -EOPNOTSUPP) goto out_dput; /* Clear any inherited mode bits */ -- cgit v0.10.2 From 0f5aa88a7bb28b73253fb42b3df8202142769f39 Mon Sep 17 00:00:00 2001 From: Nicolas Iooss Date: Sun, 28 Aug 2016 18:47:12 +0200 Subject: ceph: do not modify fi->frag in need_reset_readdir() Commit f3c4ebe65ea1 ("ceph: using hash value to compose dentry offset") modified "if (fpos_frag(new_pos) != fi->frag)" to "if (fi->frag |= fpos_frag(new_pos))" in need_reset_readdir(), thus replacing a comparison operator with an assignment one. This looks like a typo which is reported by clang when building the kernel with some warning flags: fs/ceph/dir.c:600:22: error: using the result of an assignment as a condition without parentheses [-Werror,-Wparentheses] } else if (fi->frag |= fpos_frag(new_pos)) { ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ fs/ceph/dir.c:600:22: note: place parentheses around the assignment to silence this warning } else if (fi->frag |= fpos_frag(new_pos)) { ^ ( ) fs/ceph/dir.c:600:22: note: use '!=' to turn this compound assignment into an inequality comparison } else if (fi->frag |= fpos_frag(new_pos)) { ^~ != Fixes: f3c4ebe65ea1 ("ceph: using hash value to compose dentry offset") Signed-off-by: Nicolas Iooss Signed-off-by: Ilya Dryomov diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index c64a0b7..df4b3e6 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -597,7 +597,7 @@ static bool need_reset_readdir(struct ceph_file_info *fi, loff_t new_pos) if (is_hash_order(new_pos)) { /* no need to reset last_name for a forward seek when * dentries are sotred in hash order */ - } else if (fi->frag |= fpos_frag(new_pos)) { + } else if (fi->frag != fpos_frag(new_pos)) { return true; } rinfo = fi->last_readdir ? &fi->last_readdir->r_reply_info : NULL; -- cgit v0.10.2 From c86d06ba2818c5126078cb0cf4e0175ec381045b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Sep 2016 08:38:13 -0400 Subject: PM / QoS: avoid calling cancel_delayed_work_sync() during early boot of_clk_init() ends up calling into pm_qos_update_request() very early during boot where irq is expected to stay disabled. pm_qos_update_request() uses cancel_delayed_work_sync() which correctly assumes that irq is enabled on invocation and unconditionally disables and re-enables it. Gate cancel_delayed_work_sync() invocation with kevented_up() to avoid enabling irq unexpectedly during early boot. Signed-off-by: Tejun Heo Reported-and-tested-by: Qiao Zhou Link: http://lkml.kernel.org/r/d2501c4c-8e7b-bea3-1b01-000b36b5dfe9@asrmicro.com Signed-off-by: Rafael J. Wysocki diff --git a/kernel/power/qos.c b/kernel/power/qos.c index 97b0df7..168ff44 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -482,7 +482,16 @@ void pm_qos_update_request(struct pm_qos_request *req, return; } - cancel_delayed_work_sync(&req->work); + /* + * This function may be called very early during boot, for example, + * from of_clk_init(), where irq needs to stay disabled. + * cancel_delayed_work_sync() assumes that irq is enabled on + * invocation and re-enables it on return. Avoid calling it until + * workqueue is initialized. + */ + if (keventd_up()) + cancel_delayed_work_sync(&req->work); + __pm_qos_update_request(req, new_value); } EXPORT_SYMBOL_GPL(pm_qos_update_request); -- cgit v0.10.2 From e12c8f36f3f7a60d55938c5aed5999278fa92bcb Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Tue, 30 Aug 2016 16:14:00 +0800 Subject: KVM: lapic: adjust preemption timer correctly when goes TSC backward MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit TSC_OFFSET will be adjusted if discovers TSC backward during vCPU load. The preemption timer, which relies on the guest tsc to reprogram its preemption timer value, is also reprogrammed if vCPU is scheded in to a different pCPU. However, the current implementation reprogram preemption timer before TSC_OFFSET is adjusted to the right value, resulting in the preemption timer firing prematurely. This patch fix it by adjusting TSC_OFFSET before reprogramming preemption timer if TSC backward. Cc: Paolo Bonzini Cc: Radim Krċmář Cc: Yunhong Jiang Signed-off-by: Wanpeng Li Signed-off-by: Paolo Bonzini diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 19f9f9e..699f872 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2743,16 +2743,16 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) if (tsc_delta < 0) mark_tsc_unstable("KVM discovered backwards TSC"); - if (kvm_lapic_hv_timer_in_use(vcpu) && - kvm_x86_ops->set_hv_timer(vcpu, - kvm_get_lapic_tscdeadline_msr(vcpu))) - kvm_lapic_switch_to_sw_timer(vcpu); if (check_tsc_unstable()) { u64 offset = kvm_compute_tsc_offset(vcpu, vcpu->arch.last_guest_tsc); kvm_x86_ops->write_tsc_offset(vcpu, offset); vcpu->arch.tsc_catchup = 1; } + if (kvm_lapic_hv_timer_in_use(vcpu) && + kvm_x86_ops->set_hv_timer(vcpu, + kvm_get_lapic_tscdeadline_msr(vcpu))) + kvm_lapic_switch_to_sw_timer(vcpu); /* * On a host with synchronized TSC, there is no need to update * kvmclock on vcpu->cpu migration -- cgit v0.10.2 From ed7a6948394305b810d0c6203268648715e5006f Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Fri, 26 Aug 2016 11:33:14 +0800 Subject: btrfs: do not decrease bytes_may_use when replaying extents When replaying extents, there is no need to update bytes_may_use in btrfs_alloc_logged_file_extent(), otherwise it'll trigger a WARN_ON about bytes_may_use. Fixes: ("btrfs: update btrfs_space_info's bytes_may_use timely") Signed-off-by: Wang Xiaoguang Reviewed-by: Josef Bacik Signed-off-by: David Sterba diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 64676a1..4483487 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -8216,6 +8216,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, { int ret; struct btrfs_block_group_cache *block_group; + struct btrfs_space_info *space_info; /* * Mixed block groups will exclude before processing the log so we only @@ -8231,9 +8232,14 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, if (!block_group) return -EINVAL; - ret = btrfs_add_reserved_bytes(block_group, ins->offset, - ins->offset, 0); - BUG_ON(ret); /* logic error */ + space_info = block_group->space_info; + spin_lock(&space_info->lock); + spin_lock(&block_group->lock); + space_info->bytes_reserved += ins->offset; + block_group->reserved += ins->offset; + spin_unlock(&block_group->lock); + spin_unlock(&space_info->lock); + ret = alloc_reserved_file_extent(trans, root, 0, root_objectid, 0, owner, offset, ins, 1); btrfs_put_block_group(block_group); -- cgit v0.10.2 From 5dba4b14bafe801083d01e1f400816df7e5a8f2e Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 5 Sep 2016 15:39:06 +0100 Subject: iio: ensure ret is initialized to zero before entering do loop A recent fix to iio_buffer_read_first_n_outer removed ret from being set by a return from wait_event_interruptible and also added a continue in a loop which causes the variable ret to not be set when it reaches the end of the loop. Fix this by initializing ret to zero. Also remove extraneous white space at the end of the loop. Fixes: fcf68f3c0bb2a5 ("fix sched WARNING "do not call blocking ops when !TASK_RUNNING") Signed-off-by: Colin Ian King Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 49bf9c5..158aaf4 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -110,7 +110,7 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, DEFINE_WAIT_FUNC(wait, woken_wake_function); size_t datum_size; size_t to_wait; - int ret; + int ret = 0; if (!indio_dev->info) return -ENODEV; @@ -153,7 +153,7 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, ret = rb->access->read_first_n(rb, n, buf); if (ret == 0 && (filp->f_flags & O_NONBLOCK)) ret = -EAGAIN; - } while (ret == 0); + } while (ret == 0); remove_wait_queue(&rb->pollq, &wait); return ret; -- cgit v0.10.2 From 171c0091837c81ed5c949fec6966bb5afff2d1cf Mon Sep 17 00:00:00 2001 From: Gregor Boirie Date: Fri, 2 Sep 2016 20:27:46 +0200 Subject: iio:core: fix IIO_VAL_FRACTIONAL sign handling 7985e7c100 ("iio: Introduce a new fractional value type") introduced a new IIO_VAL_FRACTIONAL value type meant to represent rational type numbers expressed by a numerator and denominator combination. Formating of IIO_VAL_FRACTIONAL values relies upon do_div() usage. This fails handling negative values properly since parameters are reevaluated as unsigned values. Fix this by using div_s64_rem() instead. Computed integer part will carry properly signed value. Formatted fractional part will always be positive. Fixes: 7985e7c100 ("iio: Introduce a new fractional value type") Signed-off-by: Gregor Boirie Reviewed-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index f914d5d..d2b8899 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -613,9 +613,8 @@ ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals) return sprintf(buf, "%d.%09u\n", vals[0], vals[1]); case IIO_VAL_FRACTIONAL: tmp = div_s64((s64)vals[0] * 1000000000LL, vals[1]); - vals[1] = do_div(tmp, 1000000000LL); - vals[0] = tmp; - return sprintf(buf, "%d.%09u\n", vals[0], vals[1]); + vals[0] = (int)div_s64_rem(tmp, 1000000000, &vals[1]); + return sprintf(buf, "%d.%09u\n", vals[0], abs(vals[1])); case IIO_VAL_FRACTIONAL_LOG2: tmp = (s64)vals[0] * 1000000000LL >> vals[1]; vals[1] = do_div(tmp, 1000000000LL); -- cgit v0.10.2 From d81d8258218228d3137055afe8acf981c3ebed46 Mon Sep 17 00:00:00 2001 From: Thiago Jung Bauermann Date: Tue, 23 Aug 2016 19:57:39 -0300 Subject: powerpc/pseries: Fix little endian build with CONFIG_KEXEC=n MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On ppc64le, builds with CONFIG_KEXEC=n fail with: arch/powerpc/platforms/pseries/setup.c: In function ‘pseries_big_endian_exceptions’: arch/powerpc/platforms/pseries/setup.c:403:13: error: implicit declaration of function ‘kdump_in_progress’ if (rc && !kdump_in_progress()) This is because pseries/setup.c includes , but kdump_in_progress() is defined in . This is a problem because the former only includes the latter if CONFIG_KEXEC_CORE=y. Fix it by including directly, as is done in powernv/setup.c. Fixes: d3cbff1b5a90 ("powerpc: Put exception configuration in a common place") Signed-off-by: Thiago Jung Bauermann Signed-off-by: Michael Ellerman diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 4ffcaa6..a39d20e 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -41,7 +41,6 @@ #include #include #include -#include #include #include @@ -66,6 +65,7 @@ #include #include #include +#include #include "pseries.h" -- cgit v0.10.2 From f8e33475b0da98c4bffc91017a3fbbfb443a7bdb Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 6 Sep 2016 13:43:45 +1000 Subject: powerpc/xics/opal: Fix processor numbers in OPAL ICP When using the OPAL ICP backend we incorrectly pass Linux CPU numbers rather than HW CPU numbers to OPAL. Fixes: d74361881f0d ("powerpc/xics: Add ICP OPAL backend") Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman diff --git a/arch/powerpc/sysdev/xics/icp-opal.c b/arch/powerpc/sysdev/xics/icp-opal.c index 57d72f1..9114243 100644 --- a/arch/powerpc/sysdev/xics/icp-opal.c +++ b/arch/powerpc/sysdev/xics/icp-opal.c @@ -23,10 +23,10 @@ static void icp_opal_teardown_cpu(void) { - int cpu = smp_processor_id(); + int hw_cpu = hard_smp_processor_id(); /* Clear any pending IPI */ - opal_int_set_mfrr(cpu, 0xff); + opal_int_set_mfrr(hw_cpu, 0xff); } static void icp_opal_flush_ipi(void) @@ -101,14 +101,16 @@ static void icp_opal_eoi(struct irq_data *d) static void icp_opal_cause_ipi(int cpu, unsigned long data) { - opal_int_set_mfrr(cpu, IPI_PRIORITY); + int hw_cpu = get_hard_smp_processor_id(cpu); + + opal_int_set_mfrr(hw_cpu, IPI_PRIORITY); } static irqreturn_t icp_opal_ipi_action(int irq, void *dev_id) { - int cpu = smp_processor_id(); + int hw_cpu = hard_smp_processor_id(); - opal_int_set_mfrr(cpu, 0xff); + opal_int_set_mfrr(hw_cpu, 0xff); return smp_ipi_demux(); } -- cgit v0.10.2 From b314427a52fd8daa1215d30e56de01e32edec531 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 6 Sep 2016 14:16:44 +1000 Subject: powerpc/powernv: Fix crash on releasing compound PE The compound PE is created to accommodate the devices attached to one specific PCI bus that consume multiple M64 segments. The compound PE is made up of one master PE and possibly multiple slave PEs. The slave PEs should be destroyed when releasing the master PE. A kernel crash happens when derferencing @pe->pdev on releasing the slave PE in pnv_ioda_deconfigure_pe(). # echo 0 > /sys/bus/pci/slots/C7/power iommu: Removing device 0000:01:00.1 from group 0 iommu: Removing device 0000:01:00.0 from group 0 Unable to handle kernel paging request for data at address 0x00000010 Faulting instruction address: 0xc00000000005d898 cpu 0x1: Vector: 300 (Data Access) at [c000000fe8217620] pc: c00000000005d898: pnv_ioda_release_pe+0x288/0x610 lr: c00000000005dbdc: pnv_ioda_release_pe+0x5cc/0x610 sp: c000000fe82178a0 msr: 9000000000009033 dar: 10 dsisr: 40000000 current = 0xc000000fe815ab80 paca = 0xc00000000ff00400 softe: 0 irq_happened: 0x01 pid = 2709, comm = sh Linux version 4.8.0-rc5-gavin-00006-g745efdb (gwshan@gwshan) \ (gcc version 4.9.3 (Buildroot 2016.02-rc2-00093-g5ea3bce) ) #586 SMP \ Tue Sep 6 13:37:29 AEST 2016 enter ? for help [c000000fe8217940] c00000000005d684 pnv_ioda_release_pe+0x74/0x610 [c000000fe82179e0] c000000000034460 pcibios_release_device+0x50/0x70 [c000000fe8217a10] c0000000004aba80 pci_release_dev+0x50/0xa0 [c000000fe8217a40] c000000000704898 device_release+0x58/0xf0 [c000000fe8217ac0] c000000000470510 kobject_release+0x80/0xf0 [c000000fe8217b00] c000000000704dd4 put_device+0x24/0x40 [c000000fe8217b20] c0000000004af94c pci_remove_bus_device+0x12c/0x150 [c000000fe8217b60] c000000000034244 pci_hp_remove_devices+0x94/0xd0 [c000000fe8217ba0] c0000000004ca444 pnv_php_disable_slot+0x64/0xb0 [c000000fe8217bd0] c0000000004c88c0 power_write_file+0xa0/0x190 [c000000fe8217c50] c0000000004c248c pci_slot_attr_store+0x3c/0x60 [c000000fe8217c70] c0000000002d6494 sysfs_kf_write+0x94/0xc0 [c000000fe8217cb0] c0000000002d50f0 kernfs_fop_write+0x180/0x260 [c000000fe8217d00] c0000000002334a0 __vfs_write+0x40/0x190 [c000000fe8217d90] c000000000234738 vfs_write+0xc8/0x240 [c000000fe8217de0] c000000000236250 SyS_write+0x60/0x110 [c000000fe8217e30] c000000000009524 system_call+0x38/0x108 It fixes the kernel crash by bypassing releasing resources (DMA, IO and memory segments, PELTM) because there are no resources assigned to the slave PE. Fixes: c5f7700bbd2e ("powerpc/powernv: Dynamically release PE") Reported-by: Frederic Barrat Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 1321826..18f6fd1 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -3402,12 +3402,6 @@ static void pnv_ioda_release_pe(struct pnv_ioda_pe *pe) struct pnv_phb *phb = pe->phb; struct pnv_ioda_pe *slave, *tmp; - /* Release slave PEs in compound PE */ - if (pe->flags & PNV_IODA_PE_MASTER) { - list_for_each_entry_safe(slave, tmp, &pe->slaves, list) - pnv_ioda_release_pe(slave); - } - list_del(&pe->list); switch (phb->type) { case PNV_PHB_IODA1: @@ -3422,6 +3416,15 @@ static void pnv_ioda_release_pe(struct pnv_ioda_pe *pe) pnv_ioda_release_pe_seg(pe); pnv_ioda_deconfigure_pe(pe->phb, pe); + + /* Release slave PEs in the compound PE */ + if (pe->flags & PNV_IODA_PE_MASTER) { + list_for_each_entry_safe(slave, tmp, &pe->slaves, list) { + list_del(&slave->list); + pnv_ioda_free_pe(slave); + } + } + pnv_ioda_free_pe(pe); } -- cgit v0.10.2 From 3ff488ab6000f1338684b227c499450317519cc1 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 5 Sep 2016 16:37:12 +0100 Subject: usb: gadget: prevent potenial null pointer dereference on skb->len An earlier fix partially fixed the null pointer dereference on skb->len by moving the assignment of len after the check on skb being non-null, however it failed to remove the erroneous dereference when assigning len. Correctly fix this by removing the initialisation of len as was originally intended. Fixes: 70237dc8efd092 ("usb: gadget: function: f_eem: socket buffer may be NULL") Acked-by: Peter Chen Signed-off-by: Colin Ian King Signed-off-by: Felipe Balbi diff --git a/drivers/usb/gadget/function/f_eem.c b/drivers/usb/gadget/function/f_eem.c index 8741fd7..007ec6e 100644 --- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -342,7 +342,7 @@ static struct sk_buff *eem_wrap(struct gether *port, struct sk_buff *skb) struct sk_buff *skb2 = NULL; struct usb_ep *in = port->in_ep; int headroom, tailroom, padlen = 0; - u16 len = skb->len; + u16 len; if (!skb) return NULL; -- cgit v0.10.2 From 79d102cbfd2e9d94257fcc7c82807ef1cdf80322 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 5 Sep 2016 17:30:07 +0200 Subject: perf/x86/intel/cqm: Check cqm/mbm enabled state in event init Yanqiu Zhang reported kernel panic when using mbm event on system where CQM is detected but without mbm event support, like with perf: # perf stat -e 'intel_cqm/event=3/' -a BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 IP: [] update_sample+0xbc/0xe0 ... [] __intel_mbm_event_init+0x18/0x20 [] flush_smp_call_function_queue+0x7b/0x160 [] generic_smp_call_function_single_interrupt+0x13/0x60 [] smp_call_function_interrupt+0x27/0x40 [] call_function_interrupt+0x8c/0xa0 ... The reason is that we currently allow to init mbm event even if mbm support is not detected. Adding checks for both cqm and mbm events and support into cqm's event_init. Fixes: 33c3cc7acfd9 ("perf/x86/mbm: Add Intel Memory B/W Monitoring enumeration and init") Reported-by: Yanqiu Zhang Signed-off-by: Jiri Olsa Acked-by: Peter Zijlstra Cc: Vikas Shivappa Cc: Tony Luck Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1473089407-21857-1-git-send-email-jolsa@kernel.org Signed-off-by: Thomas Gleixner diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index 783c49d..8f82b02 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -458,6 +458,11 @@ static void __intel_cqm_event_count(void *info); static void init_mbm_sample(u32 rmid, u32 evt_type); static void __intel_mbm_event_count(void *info); +static bool is_cqm_event(int e) +{ + return (e == QOS_L3_OCCUP_EVENT_ID); +} + static bool is_mbm_event(int e) { return (e >= QOS_MBM_TOTAL_EVENT_ID && e <= QOS_MBM_LOCAL_EVENT_ID); @@ -1366,6 +1371,10 @@ static int intel_cqm_event_init(struct perf_event *event) (event->attr.config > QOS_MBM_LOCAL_EVENT_ID)) return -EINVAL; + if ((is_cqm_event(event->attr.config) && !cqm_enabled) || + (is_mbm_event(event->attr.config) && !mbm_enabled)) + return -EINVAL; + /* unsupported modes and filters */ if (event->attr.exclude_user || event->attr.exclude_kernel || -- cgit v0.10.2 From d2896d4b55b2e32b423072a4124d7da4dc1e6cb1 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Mon, 22 Aug 2016 09:01:17 +0100 Subject: arm: KVM: Fix idmap overlap detection when the kernel is idmap'ed We're trying hard to detect when the HYP idmap overlaps with the HYP va, as it makes the teardown of a cpu dangerous. But there is one case where an overlap is completely safe, which is when the whole of the kernel is idmap'ed, which is likely to happen on 32bit when RAM is at 0x8000000 and we're using a 2G/2G VA split. In that case, we can proceed safely. Reported-by: Christoffer Dall Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 29d0b23..a3faafe 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -1714,7 +1714,8 @@ int kvm_mmu_init(void) kern_hyp_va(PAGE_OFFSET), kern_hyp_va(~0UL)); if (hyp_idmap_start >= kern_hyp_va(PAGE_OFFSET) && - hyp_idmap_start < kern_hyp_va(~0UL)) { + hyp_idmap_start < kern_hyp_va(~0UL) && + hyp_idmap_start != (unsigned long)__hyp_idmap_text_start) { /* * The idmap page is intersecting with the VA space, * it is not safe to continue further. -- cgit v0.10.2 From 87260d3f7aecba9a5fadc6886c338b2a8fccfca9 Mon Sep 17 00:00:00 2001 From: Dirk Behme Date: Thu, 21 Apr 2016 12:24:55 +0200 Subject: thermal: rcar_thermal: Fix priv->zone error handling In case thermal_zone_xxx_register() returns an error, priv->zone isn't NULL any more, but contains the error code. This is passed to thermal_zone_device_unregister(), then. This checks for priv->zone being NULL, but the error code is != NULL. So it works with the error code as a pointer. Crashing immediately. To fix this, reset priv->zone to NULL before entering rcar_gen3_thermal_remove(). Signed-off-by: Dirk Behme Reviewed-by: Geert Uytterhoeven Signed-off-by: Zhang Rui diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 71a3392..5f81792 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -504,6 +504,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) if (IS_ERR(priv->zone)) { dev_err(dev, "can't register thermal zone\n"); ret = PTR_ERR(priv->zone); + priv->zone = NULL; goto error_unregister; } -- cgit v0.10.2 From cbd60aa7cd17d81a434234268c55192862147439 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Tue, 6 Sep 2016 05:37:40 -0700 Subject: Btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns We use a btrfs_log_ctx structure to pass information into the tree log commit, and get error values out. It gets added to a per log-transaction list which we walk when things go bad. Commit d1433debe added an optimization to skip waiting for the log commit, but didn't take root_log_ctx out of the list. This patch makes sure we remove things before exiting. Signed-off-by: Chris Mason Fixes: d1433debe7f4346cf9fc0dafc71c3137d2a97bc4 cc: stable@vger.kernel.org # 3.15+ diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index e935035..ef9c55b 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2867,6 +2867,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans, if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) { blk_finish_plug(&plug); + list_del_init(&root_log_ctx.list); mutex_unlock(&log_root_tree->log_mutex); ret = root_log_ctx.log_ret; goto out; -- cgit v0.10.2 From ce129655c9d9aaa7b3bcc46529db1b36693575ed Mon Sep 17 00:00:00 2001 From: Wang Xiaoguang Date: Fri, 2 Sep 2016 10:58:46 +0800 Subject: btrfs: introduce tickets_id to determine whether asynchronous metadata reclaim work makes progress In btrfs_async_reclaim_metadata_space(), we use ticket's address to determine whether asynchronous metadata reclaim work is making progress. ticket = list_first_entry(&space_info->tickets, struct reserve_ticket, list); if (last_ticket == ticket) { flush_state++; } else { last_ticket = ticket; flush_state = FLUSH_DELAYED_ITEMS_NR; if (commit_cycles) commit_cycles--; } But indeed it's wrong, we should not rely on local variable's address to do this check, because addresses may be same. In my test environment, I dd one 168MB file in a 256MB fs, found that for this file, every time wait_reserve_ticket() called, local variable ticket's address is same, For above codes, assume a previous ticket's address is addrA, last_ticket is addrA. Btrfs_async_reclaim_metadata_space() finished this ticket and wake up it, then another ticket is added, but with the same address addrA, now last_ticket will be same to current ticket, then current ticket's flush work will start from current flush_state, not initial FLUSH_DELAYED_ITEMS_NR, which may result in some enospc issues(I have seen this in my test machine). Signed-off-by: Wang Xiaoguang Reviewed-by: Josef Bacik Signed-off-by: David Sterba diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index ec4154f..146d1c7 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -427,6 +427,7 @@ struct btrfs_space_info { struct list_head ro_bgs; struct list_head priority_tickets; struct list_head tickets; + u64 tickets_id; struct rw_semaphore groups_sem; /* for block groups in our same type */ diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 4483487..d09cf7a 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4966,12 +4966,12 @@ static void wake_all_tickets(struct list_head *head) */ static void btrfs_async_reclaim_metadata_space(struct work_struct *work) { - struct reserve_ticket *last_ticket = NULL; struct btrfs_fs_info *fs_info; struct btrfs_space_info *space_info; u64 to_reclaim; int flush_state; int commit_cycles = 0; + u64 last_tickets_id; fs_info = container_of(work, struct btrfs_fs_info, async_reclaim_work); space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA); @@ -4984,8 +4984,7 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work) spin_unlock(&space_info->lock); return; } - last_ticket = list_first_entry(&space_info->tickets, - struct reserve_ticket, list); + last_tickets_id = space_info->tickets_id; spin_unlock(&space_info->lock); flush_state = FLUSH_DELAYED_ITEMS_NR; @@ -5005,10 +5004,10 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work) space_info); ticket = list_first_entry(&space_info->tickets, struct reserve_ticket, list); - if (last_ticket == ticket) { + if (last_tickets_id == space_info->tickets_id) { flush_state++; } else { - last_ticket = ticket; + last_tickets_id = space_info->tickets_id; flush_state = FLUSH_DELAYED_ITEMS_NR; if (commit_cycles) commit_cycles--; @@ -5384,6 +5383,7 @@ again: list_del_init(&ticket->list); num_bytes -= ticket->bytes; ticket->bytes = 0; + space_info->tickets_id++; wake_up(&ticket->wait); } else { ticket->bytes -= num_bytes; @@ -5426,6 +5426,7 @@ again: num_bytes -= ticket->bytes; space_info->bytes_may_use += ticket->bytes; ticket->bytes = 0; + space_info->tickets_id++; wake_up(&ticket->wait); } else { trace_btrfs_space_reservation(fs_info, "space_info", -- cgit v0.10.2 From e6971009a95a74f28c58bbae415c40effad1226c Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 6 Sep 2016 11:56:01 -0700 Subject: x86/uaccess: force copy_*_user() to be inlined As already done with __copy_*_user(), mark copy_*_user() as __always_inline. Without this, the checks for things like __builtin_const_p() won't work consistently in either hardened usercopy nor the recent adjustments for detecting usercopy overflows at compile time. The change in kernel text size is detectable, but very small: text data bss dec hex filename 12118735 5768608 14229504 32116847 1ea106f vmlinux.before 12120207 5768608 14229504 32118319 1ea162f vmlinux.after Signed-off-by: Kees Cook diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index c3f2911..e3af86f 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -705,7 +705,7 @@ static inline void copy_user_overflow(int size, unsigned long count) WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count); } -static inline unsigned long __must_check +static __always_inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { int sz = __compiletime_object_size(to); @@ -725,7 +725,7 @@ copy_from_user(void *to, const void __user *from, unsigned long n) return n; } -static inline unsigned long __must_check +static __always_inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) { int sz = __compiletime_object_size(from); -- cgit v0.10.2 From 81409e9e28058811c9ea865345e1753f8f677e44 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 31 Aug 2016 16:04:21 -0700 Subject: usercopy: fold builtin_const check into inline function Instead of having each caller of check_object_size() need to remember to check for a const size parameter, move the check into check_object_size() itself. This actually matches the original implementation in PaX, though this commit cleans up the now-redundant builtin_const() calls in the various architectures. Signed-off-by: Kees Cook diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h index 465c709..0472927 100644 --- a/arch/ia64/include/asm/uaccess.h +++ b/arch/ia64/include/asm/uaccess.h @@ -241,8 +241,7 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use static inline unsigned long __copy_to_user (void __user *to, const void *from, unsigned long count) { - if (!__builtin_constant_p(count)) - check_object_size(from, count, true); + check_object_size(from, count, true); return __copy_user(to, (__force void __user *) from, count); } @@ -250,8 +249,7 @@ __copy_to_user (void __user *to, const void *from, unsigned long count) static inline unsigned long __copy_from_user (void *to, const void __user *from, unsigned long count) { - if (!__builtin_constant_p(count)) - check_object_size(to, count, false); + check_object_size(to, count, false); return __copy_user((__force void __user *) to, from, count); } @@ -265,8 +263,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) long __cu_len = (n); \ \ if (__access_ok(__cu_to, __cu_len, get_fs())) { \ - if (!__builtin_constant_p(n)) \ - check_object_size(__cu_from, __cu_len, true); \ + check_object_size(__cu_from, __cu_len, true); \ __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ } \ __cu_len; \ @@ -280,8 +277,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) \ __chk_user_ptr(__cu_from); \ if (__access_ok(__cu_from, __cu_len, get_fs())) { \ - if (!__builtin_constant_p(n)) \ - check_object_size(__cu_to, __cu_len, false); \ + check_object_size(__cu_to, __cu_len, false); \ __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ } \ __cu_len; \ diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index c1dc6c1..f1e3824 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -311,14 +311,12 @@ static inline unsigned long copy_from_user(void *to, unsigned long over; if (access_ok(VERIFY_READ, from, n)) { - if (!__builtin_constant_p(n)) - check_object_size(to, n, false); + check_object_size(to, n, false); return __copy_tofrom_user((__force void __user *)to, from, n); } if ((unsigned long)from < TASK_SIZE) { over = (unsigned long)from + n - TASK_SIZE; - if (!__builtin_constant_p(n - over)) - check_object_size(to, n - over, false); + check_object_size(to, n - over, false); return __copy_tofrom_user((__force void __user *)to, from, n - over) + over; } @@ -331,14 +329,12 @@ static inline unsigned long copy_to_user(void __user *to, unsigned long over; if (access_ok(VERIFY_WRITE, to, n)) { - if (!__builtin_constant_p(n)) - check_object_size(from, n, true); + check_object_size(from, n, true); return __copy_tofrom_user(to, (__force void __user *)from, n); } if ((unsigned long)to < TASK_SIZE) { over = (unsigned long)to + n - TASK_SIZE; - if (!__builtin_constant_p(n)) - check_object_size(from, n - over, true); + check_object_size(from, n - over, true); return __copy_tofrom_user(to, (__force void __user *)from, n - over) + over; } @@ -383,8 +379,7 @@ static inline unsigned long __copy_from_user_inatomic(void *to, return 0; } - if (!__builtin_constant_p(n)) - check_object_size(to, n, false); + check_object_size(to, n, false); return __copy_tofrom_user((__force void __user *)to, from, n); } @@ -412,8 +407,8 @@ static inline unsigned long __copy_to_user_inatomic(void __user *to, if (ret == 0) return 0; } - if (!__builtin_constant_p(n)) - check_object_size(from, n, true); + + check_object_size(from, n, true); return __copy_tofrom_user(to, (__force const void __user *)from, n); } diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h index 341a5a1..e722c51 100644 --- a/arch/sparc/include/asm/uaccess_32.h +++ b/arch/sparc/include/asm/uaccess_32.h @@ -249,8 +249,7 @@ unsigned long __copy_user(void __user *to, const void __user *from, unsigned lon static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) { if (n && __access_ok((unsigned long) to, n)) { - if (!__builtin_constant_p(n)) - check_object_size(from, n, true); + check_object_size(from, n, true); return __copy_user(to, (__force void __user *) from, n); } else return n; @@ -258,16 +257,14 @@ static inline unsigned long copy_to_user(void __user *to, const void *from, unsi static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) { - if (!__builtin_constant_p(n)) - check_object_size(from, n, true); + check_object_size(from, n, true); return __copy_user(to, (__force void __user *) from, n); } static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { if (n && __access_ok((unsigned long) from, n)) { - if (!__builtin_constant_p(n)) - check_object_size(to, n, false); + check_object_size(to, n, false); return __copy_user((__force void __user *) to, from, n); } else return n; diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h index 8bda94f..37a315d 100644 --- a/arch/sparc/include/asm/uaccess_64.h +++ b/arch/sparc/include/asm/uaccess_64.h @@ -212,8 +212,7 @@ copy_from_user(void *to, const void __user *from, unsigned long size) { unsigned long ret; - if (!__builtin_constant_p(size)) - check_object_size(to, size, false); + check_object_size(to, size, false); ret = ___copy_from_user(to, from, size); if (unlikely(ret)) @@ -233,8 +232,8 @@ copy_to_user(void __user *to, const void *from, unsigned long size) { unsigned long ret; - if (!__builtin_constant_p(size)) - check_object_size(from, size, true); + check_object_size(from, size, true); + ret = ___copy_to_user(to, from, size); if (unlikely(ret)) ret = copy_to_user_fixup(to, from, size); diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index cbd8990..10c9e60 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -121,7 +121,8 @@ extern void __check_object_size(const void *ptr, unsigned long n, static inline void check_object_size(const void *ptr, unsigned long n, bool to_user) { - __check_object_size(ptr, n, to_user); + if (!__builtin_constant_p(n)) + __check_object_size(ptr, n, to_user); } #else static inline void check_object_size(const void *ptr, unsigned long n, -- cgit v0.10.2 From 3c17648c2816f6d28bd2be9293032a2901994a36 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 6 Sep 2016 11:26:12 -0700 Subject: lkdtm: adjust usercopy tests to bypass const checks The hardened usercopy is now consistently avoiding checks against const sizes, since we really only want to perform runtime bounds checking on lengths that weren't known at build time. To test the hardened usercopy code, we must force the length arguments to be seen as non-const. Signed-off-by: Kees Cook diff --git a/drivers/misc/lkdtm_usercopy.c b/drivers/misc/lkdtm_usercopy.c index 5525a20..1dd6114 100644 --- a/drivers/misc/lkdtm_usercopy.c +++ b/drivers/misc/lkdtm_usercopy.c @@ -9,7 +9,15 @@ #include #include -static size_t cache_size = 1024; +/* + * Many of the tests here end up using const sizes, but those would + * normally be ignored by hardened usercopy, so force the compiler + * into choosing the non-const path to make sure we trigger the + * hardened usercopy checks by added "unconst" to all the const copies, + * and making sure "cache_size" isn't optimized into a const. + */ +static volatile size_t unconst = 0; +static volatile size_t cache_size = 1024; static struct kmem_cache *bad_cache; static const unsigned char test_text[] = "This is a test.\n"; @@ -67,14 +75,14 @@ static noinline void do_usercopy_stack(bool to_user, bool bad_frame) if (to_user) { pr_info("attempting good copy_to_user of local stack\n"); if (copy_to_user((void __user *)user_addr, good_stack, - sizeof(good_stack))) { + unconst + sizeof(good_stack))) { pr_warn("copy_to_user failed unexpectedly?!\n"); goto free_user; } pr_info("attempting bad copy_to_user of distant stack\n"); if (copy_to_user((void __user *)user_addr, bad_stack, - sizeof(good_stack))) { + unconst + sizeof(good_stack))) { pr_warn("copy_to_user failed, but lacked Oops\n"); goto free_user; } @@ -88,14 +96,14 @@ static noinline void do_usercopy_stack(bool to_user, bool bad_frame) pr_info("attempting good copy_from_user of local stack\n"); if (copy_from_user(good_stack, (void __user *)user_addr, - sizeof(good_stack))) { + unconst + sizeof(good_stack))) { pr_warn("copy_from_user failed unexpectedly?!\n"); goto free_user; } pr_info("attempting bad copy_from_user of distant stack\n"); if (copy_from_user(bad_stack, (void __user *)user_addr, - sizeof(good_stack))) { + unconst + sizeof(good_stack))) { pr_warn("copy_from_user failed, but lacked Oops\n"); goto free_user; } @@ -109,7 +117,7 @@ static void do_usercopy_heap_size(bool to_user) { unsigned long user_addr; unsigned char *one, *two; - const size_t size = 1024; + size_t size = unconst + 1024; one = kmalloc(size, GFP_KERNEL); two = kmalloc(size, GFP_KERNEL); @@ -285,13 +293,14 @@ void lkdtm_USERCOPY_KERNEL(void) pr_info("attempting good copy_to_user from kernel rodata\n"); if (copy_to_user((void __user *)user_addr, test_text, - sizeof(test_text))) { + unconst + sizeof(test_text))) { pr_warn("copy_to_user failed unexpectedly?!\n"); goto free_user; } pr_info("attempting bad copy_to_user from kernel text\n"); - if (copy_to_user((void __user *)user_addr, vm_mmap, PAGE_SIZE)) { + if (copy_to_user((void __user *)user_addr, vm_mmap, + unconst + PAGE_SIZE)) { pr_warn("copy_to_user failed, but lacked Oops\n"); goto free_user; } -- cgit v0.10.2 From 03c2778a938aaba0893f6d6cdc29511d91a79848 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Fri, 2 Sep 2016 14:39:50 -0400 Subject: ipv6: release dst in ping_v6_sendmsg Neither the failure or success paths of ping_v6_sendmsg release the dst it acquires. This leads to a flood of warnings from "net/core/dst.c:288 dst_release" on older kernels that don't have 8bf4ada2e21378816b28205427ee6b0e1ca4c5f1 backported. That patch optimistically hoped this had been fixed post 3.10, but it seems at least one case wasn't, where I've seen this triggered a lot from machines doing unprivileged icmp sockets. Cc: Martin Lau Signed-off-by: Dave Jones Acked-by: Martin KaFai Lau Signed-off-by: David S. Miller diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c index 0900352..0e983b6 100644 --- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -126,8 +126,10 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) rt = (struct rt6_info *) dst; np = inet6_sk(sk); - if (!np) - return -EBADF; + if (!np) { + err = -EBADF; + goto dst_err_out; + } if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) fl6.flowi6_oif = np->mcast_oif; @@ -163,6 +165,9 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) } release_sock(sk); +dst_err_out: + dst_release(dst); + if (err) return err; -- cgit v0.10.2 From 78d506e1b7071b24850fd5ac22b896c459b0a04c Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 6 Sep 2016 11:22:49 -0400 Subject: xprtrdma: Revert 3d4cf35bd4fa ("xprtrdma: Reply buffer exhaustion...") Receive buffer exhaustion, if it were to actually occur, would be catastrophic. However, when there are no reply buffers to post, that means all of them have already been posted and are waiting for incoming replies. By design, there can never be more RPCs in flight than there are available receive buffers. A receive buffer can be left posted after an RPC exits without a received reply; say, due to a credential problem or a soft timeout. This does not result in fewer posted receive buffers than there are pending RPCs, and there is already logic in xprtrdma to deal appropriately with this case. It also looks like the "+ 2" that was removed was accidentally accommodating the number of extra receive buffers needed for receiving backchannel requests. That will need to be addressed by another patch. Fixes: 3d4cf35bd4fa ("xprtrdma: Reply buffer exhaustion can be...") Signed-off-by: Chuck Lever Reviewed-by: Anna Schumaker Signed-off-by: Trond Myklebust diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 536d0be..fefcba9 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -923,7 +923,7 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) } INIT_LIST_HEAD(&buf->rb_recv_bufs); - for (i = 0; i < buf->rb_max_requests; i++) { + for (i = 0; i < buf->rb_max_requests + 2; i++) { struct rpcrdma_rep *rep; rep = rpcrdma_create_rep(r_xprt); @@ -1076,6 +1076,8 @@ rpcrdma_put_mw(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mw *mw) /* * Get a set of request/reply buffers. + * + * Reply buffer (if available) is attached to send buffer upon return. */ struct rpcrdma_req * rpcrdma_buffer_get(struct rpcrdma_buffer *buffers) @@ -1094,13 +1096,13 @@ rpcrdma_buffer_get(struct rpcrdma_buffer *buffers) out_reqbuf: spin_unlock(&buffers->rb_lock); - pr_warn("rpcrdma: out of request buffers (%p)\n", buffers); + pr_warn("RPC: %s: out of request buffers\n", __func__); return NULL; out_repbuf: - list_add(&req->rl_free, &buffers->rb_send_bufs); spin_unlock(&buffers->rb_lock); - pr_warn("rpcrdma: out of reply buffers (%p)\n", buffers); - return NULL; + pr_warn("RPC: %s: out of reply buffers\n", __func__); + req->rl_reply = NULL; + return req; } /* -- cgit v0.10.2 From 05c974669ecec510a85d8534099bb75404e82c41 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 6 Sep 2016 11:22:58 -0400 Subject: xprtrdma: Fix receive buffer accounting An RPC can terminate before its reply arrives, if a credential problem or a soft timeout occurs. After this happens, xprtrdma reports it is out of Receive buffers. A Receive buffer is posted before each RPC is sent, and returned to the buffer pool when a reply is received. If no reply is received for an RPC, that Receive buffer remains posted. But xprtrdma tries to post another when the next RPC is sent. If this happens a few dozen times, there are no receive buffers left to be posted at send time. I don't see a way for a transport connection to recover at that point, and it will spit warnings and unnecessarily delay RPCs on occasion for its remaining lifetime. Commit 1e465fd4ff47 ("xprtrdma: Replace send and receive arrays") removed a little bit of logic to detect this case and not provide a Receive buffer so no more buffers are posted, and then transport operation continues correctly. We didn't understand what that logic did, and it wasn't commented, so it was removed as part of the overhaul to support backchannel requests. Restore it, but be wary of the need to keep extra Receives posted to deal with backchannel requests. Fixes: 1e465fd4ff47 ("xprtrdma: Replace send and receive arrays") Signed-off-by: Chuck Lever Reviewed-by: Anna Schumaker Signed-off-by: Trond Myklebust diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index fefcba9..799cce6 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -51,6 +51,7 @@ #include #include #include +#include #include #include /* try_module_get()/module_put() */ @@ -923,7 +924,7 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) } INIT_LIST_HEAD(&buf->rb_recv_bufs); - for (i = 0; i < buf->rb_max_requests + 2; i++) { + for (i = 0; i < buf->rb_max_requests + RPCRDMA_MAX_BC_REQUESTS; i++) { struct rpcrdma_rep *rep; rep = rpcrdma_create_rep(r_xprt); @@ -1018,6 +1019,7 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) rep = rpcrdma_buffer_get_rep_locked(buf); rpcrdma_destroy_rep(ia, rep); } + buf->rb_send_count = 0; spin_lock(&buf->rb_reqslock); while (!list_empty(&buf->rb_allreqs)) { @@ -1032,6 +1034,7 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) spin_lock(&buf->rb_reqslock); } spin_unlock(&buf->rb_reqslock); + buf->rb_recv_count = 0; rpcrdma_destroy_mrs(buf); } @@ -1074,6 +1077,23 @@ rpcrdma_put_mw(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mw *mw) spin_unlock(&buf->rb_mwlock); } +static struct rpcrdma_rep * +rpcrdma_buffer_get_rep(struct rpcrdma_buffer *buffers) +{ + /* If an RPC previously completed without a reply (say, a + * credential problem or a soft timeout occurs) then hold off + * on supplying more Receive buffers until the number of new + * pending RPCs catches up to the number of posted Receives. + */ + if (unlikely(buffers->rb_send_count < buffers->rb_recv_count)) + return NULL; + + if (unlikely(list_empty(&buffers->rb_recv_bufs))) + return NULL; + buffers->rb_recv_count++; + return rpcrdma_buffer_get_rep_locked(buffers); +} + /* * Get a set of request/reply buffers. * @@ -1087,10 +1107,9 @@ rpcrdma_buffer_get(struct rpcrdma_buffer *buffers) spin_lock(&buffers->rb_lock); if (list_empty(&buffers->rb_send_bufs)) goto out_reqbuf; + buffers->rb_send_count++; req = rpcrdma_buffer_get_req_locked(buffers); - if (list_empty(&buffers->rb_recv_bufs)) - goto out_repbuf; - req->rl_reply = rpcrdma_buffer_get_rep_locked(buffers); + req->rl_reply = rpcrdma_buffer_get_rep(buffers); spin_unlock(&buffers->rb_lock); return req; @@ -1098,11 +1117,6 @@ out_reqbuf: spin_unlock(&buffers->rb_lock); pr_warn("RPC: %s: out of request buffers\n", __func__); return NULL; -out_repbuf: - spin_unlock(&buffers->rb_lock); - pr_warn("RPC: %s: out of reply buffers\n", __func__); - req->rl_reply = NULL; - return req; } /* @@ -1119,9 +1133,12 @@ rpcrdma_buffer_put(struct rpcrdma_req *req) req->rl_reply = NULL; spin_lock(&buffers->rb_lock); + buffers->rb_send_count--; list_add_tail(&req->rl_free, &buffers->rb_send_bufs); - if (rep) + if (rep) { + buffers->rb_recv_count--; list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs); + } spin_unlock(&buffers->rb_lock); } @@ -1135,8 +1152,7 @@ rpcrdma_recv_buffer_get(struct rpcrdma_req *req) struct rpcrdma_buffer *buffers = req->rl_buffer; spin_lock(&buffers->rb_lock); - if (!list_empty(&buffers->rb_recv_bufs)) - req->rl_reply = rpcrdma_buffer_get_rep_locked(buffers); + req->rl_reply = rpcrdma_buffer_get_rep(buffers); spin_unlock(&buffers->rb_lock); } @@ -1150,6 +1166,7 @@ rpcrdma_recv_buffer_put(struct rpcrdma_rep *rep) struct rpcrdma_buffer *buffers = &rep->rr_rxprt->rx_buf; spin_lock(&buffers->rb_lock); + buffers->rb_recv_count--; list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs); spin_unlock(&buffers->rb_lock); } diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index 670fad5..a71b0f5 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -321,6 +321,7 @@ struct rpcrdma_buffer { char *rb_pool; spinlock_t rb_lock; /* protect buf lists */ + int rb_send_count, rb_recv_count; struct list_head rb_send_bufs; struct list_head rb_recv_bufs; u32 rb_max_requests; -- cgit v0.10.2 From 007e4ba3ee137f4700f39aa6dbaf01a71047c5f6 Mon Sep 17 00:00:00 2001 From: Helmut Buchsbaum Date: Sun, 4 Sep 2016 18:09:47 +0200 Subject: net: macb: initialize checksum when using checksum offloading I'm still struggling to get this fix right.. Changes since v2: - do not blindly modify SKB contents according to Dave's legitimate objection Changes since v1: - dropped disabling HW checksum offload for Zynq - initialize checksum similar to net/ethernet/freescale/fec_main.c -- >8 -- MACB/GEM needs the checksum field initialized to 0 to get correct results on transmit in all cases, e.g. on Zynq, UDP packets with payload <= 2 otherwise contain a wrong checksums. Signed-off-by: Helmut Buchsbaum Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 89c0cfa..d954a97 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -1323,6 +1323,24 @@ dma_error: return 0; } +static inline int macb_clear_csum(struct sk_buff *skb) +{ + /* no change for packets without checksum offloading */ + if (skb->ip_summed != CHECKSUM_PARTIAL) + return 0; + + /* make sure we can modify the header */ + if (unlikely(skb_cow_head(skb, 0))) + return -1; + + /* initialize checksum field + * This is required - at least for Zynq, which otherwise calculates + * wrong UDP header checksums for UDP packets with UDP data len <=2 + */ + *(__sum16 *)(skb_checksum_start(skb) + skb->csum_offset) = 0; + return 0; +} + static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev) { u16 queue_index = skb_get_queue_mapping(skb); @@ -1362,6 +1380,11 @@ static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_BUSY; } + if (macb_clear_csum(skb)) { + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + /* Map socket buffer for DMA transfer */ if (!macb_tx_map(bp, queue, skb)) { dev_kfree_skb_any(skb); -- cgit v0.10.2 From daa7ee8dfa64233789221685e73a6ef8159f80de Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Sun, 4 Sep 2016 23:02:21 +0530 Subject: net: smsc: remove build warning of duplicate definition The build of m32r was giving warning: In file included from drivers/net/ethernet/smsc/smc91x.c:92:0: drivers/net/ethernet/smsc/smc91x.h:448:0: warning: "SMC_inb" redefined #define SMC_inb(ioaddr, reg) ({ BUG(); 0; }) drivers/net/ethernet/smsc/smc91x.h:106:0: note: this is the location of the previous definition #define SMC_inb(a, r) inb(((u32)a) + (r)) drivers/net/ethernet/smsc/smc91x.h:449:0: warning: "SMC_outb" redefined #define SMC_outb(x, ioaddr, reg) BUG() drivers/net/ethernet/smsc/smc91x.h:108:0: note: this is the location of the previous definition #define SMC_outb(v, a, r) outb(v, ((u32)a) + (r)) Signed-off-by: Sudip Mukherjee Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/smsc/smc91x.h b/drivers/net/ethernet/smsc/smc91x.h index e17671c..ea84654 100644 --- a/drivers/net/ethernet/smsc/smc91x.h +++ b/drivers/net/ethernet/smsc/smc91x.h @@ -470,7 +470,9 @@ smc_pxa_dma_insw(void __iomem *ioaddr, struct smc_local *lp, int reg, int dma, #endif #if ! SMC_CAN_USE_8BIT +#undef SMC_inb #define SMC_inb(ioaddr, reg) ({ BUG(); 0; }) +#undef SMC_outb #define SMC_outb(x, ioaddr, reg) BUG() #define SMC_insb(a, r, p, l) BUG() #define SMC_outsb(a, r, p, l) BUG() -- cgit v0.10.2 From 5a56a0b3a45dd0cc5b2f7bec6afd053a474ed9f5 Mon Sep 17 00:00:00 2001 From: Mark Tomlinson Date: Mon, 5 Sep 2016 10:20:20 +1200 Subject: net: Don't delete routes in different VRFs When deleting an IP address from an interface, there is a clean-up of routes which refer to this local address. However, there was no check to see that the VRF matched. This meant that deletion wasn't confined to the VRF it should have been. To solve this, a new field has been added to fib_info to hold a table id. When removing fib entries corresponding to a local ip address, this table id is also used in the comparison. The table id is populated when the fib_info is created. This was already done in some places, but not in ip_rt_ioctl(). This has now been fixed. Fixes: 021dd3b8a142 ("net: Add routes to the table associated with the device") Acked-by: David Ahern Tested-by: David Ahern Signed-off-by: Mark Tomlinson Signed-off-by: David S. Miller diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 4079fc1..7d4a72e 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -111,6 +111,7 @@ struct fib_info { unsigned char fib_scope; unsigned char fib_type; __be32 fib_prefsrc; + u32 fib_tb_id; u32 fib_priority; u32 *fib_metrics; #define fib_mtu fib_metrics[RTAX_MTU-1] @@ -319,7 +320,7 @@ void fib_flush_external(struct net *net); /* Exported by fib_semantics.c */ int ip_fib_check_default(__be32 gw, struct net_device *dev); int fib_sync_down_dev(struct net_device *dev, unsigned long event, bool force); -int fib_sync_down_addr(struct net *net, __be32 local); +int fib_sync_down_addr(struct net_device *dev, __be32 local); int fib_sync_up(struct net_device *dev, unsigned int nh_flags); extern u32 fib_multipath_secret __read_mostly; diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index ef2ebeb..1b25daf 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -509,6 +509,7 @@ static int rtentry_to_fib_config(struct net *net, int cmd, struct rtentry *rt, if (!dev) return -ENODEV; cfg->fc_oif = dev->ifindex; + cfg->fc_table = l3mdev_fib_table(dev); if (colon) { struct in_ifaddr *ifa; struct in_device *in_dev = __in_dev_get_rtnl(dev); @@ -1027,7 +1028,7 @@ no_promotions: * First of all, we scan fib_info list searching * for stray nexthop entries, then ignite fib_flush. */ - if (fib_sync_down_addr(dev_net(dev), ifa->ifa_local)) + if (fib_sync_down_addr(dev, ifa->ifa_local)) fib_flush(dev_net(dev)); } } diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 539fa26..e9f5622 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -1057,6 +1057,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg) fi->fib_priority = cfg->fc_priority; fi->fib_prefsrc = cfg->fc_prefsrc; fi->fib_type = cfg->fc_type; + fi->fib_tb_id = cfg->fc_table; fi->fib_nhs = nhs; change_nexthops(fi) { @@ -1337,18 +1338,21 @@ nla_put_failure: * referring to it. * - device went down -> we must shutdown all nexthops going via it. */ -int fib_sync_down_addr(struct net *net, __be32 local) +int fib_sync_down_addr(struct net_device *dev, __be32 local) { int ret = 0; unsigned int hash = fib_laddr_hashfn(local); struct hlist_head *head = &fib_info_laddrhash[hash]; + struct net *net = dev_net(dev); + int tb_id = l3mdev_fib_table(dev); struct fib_info *fi; if (!fib_info_laddrhash || local == 0) return 0; hlist_for_each_entry(fi, head, fib_lhash) { - if (!net_eq(fi->fib_net, net)) + if (!net_eq(fi->fib_net, net) || + fi->fib_tb_id != tb_id) continue; if (fi->fib_prefsrc == local) { fi->fib_flags |= RTNH_F_DEAD; -- cgit v0.10.2 From 9d13744bb75078175ab49408f2abb980e4dbccc9 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Mon, 5 Sep 2016 01:57:35 -0400 Subject: bnxt_en: Fix TX push operation on ARM64. There is a code path where we are calling __iowrite64_copy() on an address that is not 64-bit aligned. This causes an exception on some architectures such as arm64. Fix that code path by using __iowrite32_copy(). Reported-by: JD Zheng Signed-off-by: Michael Chan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 2cf7910..228c964 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -353,8 +353,8 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) push_len = (length + sizeof(*tx_push) + 7) / 8; if (push_len > 16) { __iowrite64_copy(txr->tx_doorbell, tx_push_buf, 16); - __iowrite64_copy(txr->tx_doorbell + 4, tx_push_buf + 1, - push_len - 16); + __iowrite32_copy(txr->tx_doorbell + 4, tx_push_buf + 1, + (push_len - 16) << 1); } else { __iowrite64_copy(txr->tx_doorbell, tx_push_buf, push_len); -- cgit v0.10.2 From 751eb6b6042a596b0080967c1a529a9fe98dac1d Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 5 Sep 2016 16:06:31 +0800 Subject: ipv6: addrconf: fix dev refcont leak when DAD failed In general, when DAD detected IPv6 duplicate address, ifp->state will be set to INET6_IFADDR_STATE_ERRDAD and DAD is stopped by a delayed work, the call tree should be like this: ndisc_recv_ns -> addrconf_dad_failure <- missing ifp put -> addrconf_mod_dad_work -> schedule addrconf_dad_work() -> addrconf_dad_stop() <- missing ifp hold before call it addrconf_dad_failure() called with ifp refcont holding but not put. addrconf_dad_work() call addrconf_dad_stop() without extra holding refcount. This will not cause any issue normally. But the race between addrconf_dad_failure() and addrconf_dad_work() may cause ifp refcount leak and netdevice can not be unregister, dmesg show the following messages: IPv6: eth0: IPv6 duplicate address fe80::XX:XXXX:XXXX:XX detected! ... unregister_netdevice: waiting for eth0 to become free. Usage count = 1 Cc: stable@vger.kernel.org Fixes: c15b1ccadb32 ("ipv6: move DAD and addrconf_verify processing to workqueue") Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index bdf368e..2f1f5d4 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1948,6 +1948,7 @@ errdad: spin_unlock_bh(&ifp->lock); addrconf_mod_dad_work(ifp, 0); + in6_ifa_put(ifp); } /* Join to solicited addr multicast group. @@ -3857,6 +3858,7 @@ static void addrconf_dad_work(struct work_struct *w) addrconf_dad_begin(ifp); goto out; } else if (action == DAD_ABORT) { + in6_ifa_hold(ifp); addrconf_dad_stop(ifp, 1); if (disable_ipv6) addrconf_ifdown(idev->dev, 0); -- cgit v0.10.2 From 696118c016dd5f5caaa05360f13f8acd8fb9d1a7 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 7 Sep 2016 13:39:37 +0300 Subject: usb: dwc3: pci: fix build warning on !PM_SLEEP When building a kernel with CONFIG_PM_SLEEP=n, we get the following warning: drivers/usb/dwc3/dwc3-pci.c:253:12: warning: 'dwc3_pci_pm_dummy' defined but not used In order to fix this, we should only define dwc3_pci_pm_dummy() when CONFIG_PM_SLEEP is defined. Fixes: f6c274e11e3b ("usb: dwc3: pci: runtime_resume child device") Reported-by: Arnd Bergmann Acked-by: Arnd Bergmann Signed-off-by: Felipe Balbi diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 0a32430..6df0f5d 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -249,7 +249,9 @@ static int dwc3_pci_runtime_resume(struct device *dev) return pm_runtime_get(&dwc3->dev); } +#endif /* CONFIG_PM */ +#ifdef CONFIG_PM_SLEEP static int dwc3_pci_pm_dummy(struct device *dev) { /* @@ -262,7 +264,7 @@ static int dwc3_pci_pm_dummy(struct device *dev) */ return 0; } -#endif /* CONFIG_PM */ +#endif /* CONFIG_PM_SLEEP */ static struct dev_pm_ops dwc3_pci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_pm_dummy, dwc3_pci_pm_dummy) -- cgit v0.10.2 From 0bd2223594a4dcddc1e34b15774a3a4776f7749e Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Thu, 1 Sep 2016 14:25:43 +0100 Subject: crypto: cryptd - initialize child shash_desc on import When calling .import() on a cryptd ahash_request, the structure members that describe the child transform in the shash_desc need to be initialized like they are when calling .init() Cc: stable@vger.kernel.org Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu diff --git a/crypto/cryptd.c b/crypto/cryptd.c index 77207b4..0c654e5 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -631,9 +631,14 @@ static int cryptd_hash_export(struct ahash_request *req, void *out) static int cryptd_hash_import(struct ahash_request *req, const void *in) { - struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct shash_desc *desc = cryptd_shash_desc(req); + + desc->tfm = ctx->child; + desc->flags = req->base.flags; - return crypto_shash_import(&rctx->desc, in); + return crypto_shash_import(desc, in); } static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, -- cgit v0.10.2 From e34f2ff40e0339f6a379e1ecf49e8f2759056453 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Giedrius=20Statkevi=C4=8Dius?= Date: Thu, 1 Sep 2016 20:47:02 +0300 Subject: ath9k: bring back direction setting in ath9k_{start_stop} MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A regression was introduced in commit id 79d4db1214a ("ath9k: cleanup led_pin initial") that broken the WLAN status led on my laptop with AR9287 after suspending and resuming. Steps to reproduce: * Suspend (laptop) * Resume (laptop) * Observe that the WLAN led no longer turns ON/OFF depending on the status and is always red Even though for my case it only needs to be set to OUT in ath9k_start but for consistency bring back the IN direction setting as well. Fixes: 79d4db1214a0 ("ath9k: cleanup led_pin initial") Cc: Miaoqing Pan Cc: Kalle Valo Cc: # 4.7+ Link: https://bugzilla.kernel.org/show_bug.cgi?id=151711 Signed-off-by: Giedrius Statkevičius [kvalo@qca.qualcomm.com: improve commit log] Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 6ca4337..7cb65c3 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -718,9 +718,12 @@ static int ath9k_start(struct ieee80211_hw *hw) if (!ath_complete_reset(sc, false)) ah->reset_power_on = false; - if (ah->led_pin >= 0) + if (ah->led_pin >= 0) { ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 1 : 0); + ath9k_hw_gpio_request_out(ah, ah->led_pin, NULL, + AR_GPIO_OUTPUT_MUX_AS_OUTPUT); + } /* * Reset key cache to sane defaults (all entries cleared) instead of @@ -864,9 +867,11 @@ static void ath9k_stop(struct ieee80211_hw *hw) spin_lock_bh(&sc->sc_pcu_lock); - if (ah->led_pin >= 0) + if (ah->led_pin >= 0) { ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1); + ath9k_hw_gpio_request_in(ah, ah->led_pin, NULL); + } ath_prepare_reset(sc); -- cgit v0.10.2 From ded89912156b1a47d940a0c954c43afbabd0c42c Mon Sep 17 00:00:00 2001 From: Arend Van Spriel Date: Mon, 5 Sep 2016 10:45:47 +0100 Subject: brcmfmac: avoid potential stack overflow in brcmf_cfg80211_start_ap() User-space can choose to omit NL80211_ATTR_SSID and only provide raw IE TLV data. When doing so it can provide SSID IE with length exceeding the allowed size. The driver further processes this IE copying it into a local variable without checking the length. Hence stack can be corrupted and used as exploit. Cc: stable@vger.kernel.org # v4.7 Reported-by: Daxing Guo Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Franky Lin Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 5db56a7..b8aec5e5 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -4527,7 +4527,7 @@ brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, (u8 *)&settings->beacon.head[ie_offset], settings->beacon.head_len - ie_offset, WLAN_EID_SSID); - if (!ssid_ie) + if (!ssid_ie || ssid_ie->len > IEEE80211_MAX_SSID_LEN) return -EINVAL; memcpy(ssid_le.SSID, ssid_ie->data, ssid_ie->len); -- cgit v0.10.2 From 972939e28592ec61e2e8334786152be2c80de677 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= Date: Mon, 1 Aug 2016 23:01:55 +0200 Subject: um/ptrace: Fix the syscall_trace_leave call MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Keep the same semantic as before the commit 26703c636c1f: deallocate audit context and fake a proper syscall exit. This fix a kernel panic triggered by the seccomp_bpf test: > [ RUN ] global.ERRNO_valid > BUG: failure at kernel/auditsc.c:1504/__audit_syscall_entry()! > Kernel panic - not syncing: BUG! Fixes: 26703c636c1f ("um/ptrace: run seccomp after ptrace") Signed-off-by: Mickaël Salaün Acked-by: Kees Cook Cc: Jeff Dike Cc: Richard Weinberger Cc: James Morris Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: James Morris Signed-off-by: Kees Cook diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c index ef4b8f9..0728fee 100644 --- a/arch/um/kernel/skas/syscall.c +++ b/arch/um/kernel/skas/syscall.c @@ -21,11 +21,11 @@ void handle_syscall(struct uml_pt_regs *r) PT_REGS_SET_SYSCALL_RETURN(regs, -ENOSYS); if (syscall_trace_enter(regs)) - return; + goto out; /* Do the seccomp check after ptrace; failures should be fast. */ if (secure_computing(NULL) == -1) - return; + goto out; /* Update the syscall number after orig_ax has potentially been updated * with ptrace. @@ -37,5 +37,6 @@ void handle_syscall(struct uml_pt_regs *r) PT_REGS_SET_SYSCALL_RETURN(regs, EXECUTE_SYSCALL(syscall, regs)); +out: syscall_trace_leave(regs); } -- cgit v0.10.2 From ce29856a5e1aabe52e18b2c60db1490769a6ab55 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= Date: Mon, 1 Aug 2016 23:01:56 +0200 Subject: um/ptrace: Fix the syscall number update after a ptrace MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Update the syscall number after each PTRACE_SETREGS on ORIG_*AX. This is needed to get the potentially altered syscall number in the seccomp filters after RET_TRACE. This fix four seccomp_bpf tests: > [ RUN ] TRACE_syscall.skip_after_RET_TRACE > seccomp_bpf.c:1560:TRACE_syscall.skip_after_RET_TRACE:Expected -1 (18446744073709551615) == syscall(39) (26) > seccomp_bpf.c:1561:TRACE_syscall.skip_after_RET_TRACE:Expected 1 (1) == (*__errno_location ()) (22) > [ FAIL ] TRACE_syscall.skip_after_RET_TRACE > [ RUN ] TRACE_syscall.kill_after_RET_TRACE > TRACE_syscall.kill_after_RET_TRACE: Test exited normally instead of by signal (code: 1) > [ FAIL ] TRACE_syscall.kill_after_RET_TRACE > [ RUN ] TRACE_syscall.skip_after_ptrace > seccomp_bpf.c:1622:TRACE_syscall.skip_after_ptrace:Expected -1 (18446744073709551615) == syscall(39) (26) > seccomp_bpf.c:1623:TRACE_syscall.skip_after_ptrace:Expected 1 (1) == (*__errno_location ()) (22) > [ FAIL ] TRACE_syscall.skip_after_ptrace > [ RUN ] TRACE_syscall.kill_after_ptrace > TRACE_syscall.kill_after_ptrace: Test exited normally instead of by signal (code: 1) > [ FAIL ] TRACE_syscall.kill_after_ptrace Fixes: 26703c636c1f ("um/ptrace: run seccomp after ptrace") Signed-off-by: Mickaël Salaün Acked-by: Kees Cook Cc: Jeff Dike Cc: Richard Weinberger Cc: James Morris Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: James Morris Signed-off-by: Kees Cook diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c index 0728fee..b783ac8 100644 --- a/arch/um/kernel/skas/syscall.c +++ b/arch/um/kernel/skas/syscall.c @@ -27,12 +27,7 @@ void handle_syscall(struct uml_pt_regs *r) if (secure_computing(NULL) == -1) goto out; - /* Update the syscall number after orig_ax has potentially been updated - * with ptrace. - */ - UPT_SYSCALL_NR(r) = PT_SYSCALL_NR(r->gp); syscall = UPT_SYSCALL_NR(r); - if (syscall >= 0 && syscall <= __NR_syscall_max) PT_REGS_SET_SYSCALL_RETURN(regs, EXECUTE_SYSCALL(syscall, regs)); diff --git a/arch/x86/um/ptrace_32.c b/arch/x86/um/ptrace_32.c index ebd4dd6..a7ef7b1 100644 --- a/arch/x86/um/ptrace_32.c +++ b/arch/x86/um/ptrace_32.c @@ -84,7 +84,10 @@ int putreg(struct task_struct *child, int regno, unsigned long value) case EAX: case EIP: case UESP: + break; case ORIG_EAX: + /* Update the syscall number. */ + UPT_SYSCALL_NR(&child->thread.regs.regs) = value; break; case FS: if (value && (value & 3) != 3) diff --git a/arch/x86/um/ptrace_64.c b/arch/x86/um/ptrace_64.c index faab418..0b5c184 100644 --- a/arch/x86/um/ptrace_64.c +++ b/arch/x86/um/ptrace_64.c @@ -78,7 +78,11 @@ int putreg(struct task_struct *child, int regno, unsigned long value) case RSI: case RDI: case RBP: + break; + case ORIG_RAX: + /* Update the syscall number. */ + UPT_SYSCALL_NR(&child->thread.regs.regs) = value; break; case FS: -- cgit v0.10.2 From 4fadd04d504a82f7f1fdeaddc144a9c396d1285e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= Date: Mon, 1 Aug 2016 23:01:57 +0200 Subject: seccomp: Remove 2-phase API documentation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes: 8112c4f140fa ("seccomp: remove 2-phase API") Signed-off-by: Mickaël Salaün Acked-by: Kees Cook Cc: Andy Lutomirski Cc: James Morris Signed-off-by: James Morris Signed-off-by: Kees Cook diff --git a/arch/Kconfig b/arch/Kconfig index e9c9334..fd6e971 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -336,17 +336,6 @@ config HAVE_ARCH_SECCOMP_FILTER results in the system call being skipped immediately. - seccomp syscall wired up - For best performance, an arch should use seccomp_phase1 and - seccomp_phase2 directly. It should call seccomp_phase1 for all - syscalls if TIF_SECCOMP is set, but seccomp_phase1 does not - need to be called from a ptrace-safe context. It must then - call seccomp_phase2 if seccomp_phase1 returns anything other - than SECCOMP_PHASE1_OK or SECCOMP_PHASE1_SKIP. - - As an additional optimization, an arch may provide seccomp_data - directly to seccomp_phase1; this avoids multiple calls - to the syscall_xyz helpers for every syscall. - config SECCOMP_FILTER def_bool y depends on HAVE_ARCH_SECCOMP_FILTER && SECCOMP && NET -- cgit v0.10.2 From a85d6b8242dc78ef3f4542a0f979aebcbe77fc4e Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 7 Sep 2016 09:39:32 -0700 Subject: usercopy: force check_object_size() inline Just for good measure, make sure that check_object_size() is always inlined too, as already done for copy_*_user() and __copy_*_user(). Suggested-by: Linus Torvalds Signed-off-by: Kees Cook diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index 10c9e60..2b5b10e 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -118,8 +118,8 @@ static inline int arch_within_stack_frames(const void * const stack, extern void __check_object_size(const void *ptr, unsigned long n, bool to_user); -static inline void check_object_size(const void *ptr, unsigned long n, - bool to_user) +static __always_inline void check_object_size(const void *ptr, unsigned long n, + bool to_user) { if (!__builtin_constant_p(n)) __check_object_size(ptr, n, to_user); -- cgit v0.10.2 From 8e1f74ea02cf4562404c48c6882214821552c13f Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 7 Sep 2016 09:54:34 -0700 Subject: usercopy: remove page-spanning test for now A custom allocator without __GFP_COMP that copies to userspace has been found in vmw_execbuf_process[1], so this disables the page-span checker by placing it behind a CONFIG for future work where such things can be tracked down later. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1373326 Reported-by: Vinson Lee Fixes: f5509cc18daa ("mm: Hardened usercopy") Signed-off-by: Kees Cook diff --git a/mm/usercopy.c b/mm/usercopy.c index a3cc305..089328f 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -134,31 +134,16 @@ static inline const char *check_bogus_address(const void *ptr, unsigned long n) return NULL; } -static inline const char *check_heap_object(const void *ptr, unsigned long n, - bool to_user) +/* Checks for allocs that are marked in some way as spanning multiple pages. */ +static inline const char *check_page_span(const void *ptr, unsigned long n, + struct page *page, bool to_user) { - struct page *page, *endpage; +#ifdef CONFIG_HARDENED_USERCOPY_PAGESPAN const void *end = ptr + n - 1; + struct page *endpage; bool is_reserved, is_cma; /* - * Some architectures (arm64) return true for virt_addr_valid() on - * vmalloced addresses. Work around this by checking for vmalloc - * first. - */ - if (is_vmalloc_addr(ptr)) - return NULL; - - if (!virt_addr_valid(ptr)) - return NULL; - - page = virt_to_head_page(ptr); - - /* Check slab allocator for flags and size. */ - if (PageSlab(page)) - return __check_heap_object(ptr, n, page); - - /* * Sometimes the kernel data regions are not marked Reserved (see * check below). And sometimes [_sdata,_edata) does not cover * rodata and/or bss, so check each range explicitly. @@ -186,7 +171,7 @@ static inline const char *check_heap_object(const void *ptr, unsigned long n, ((unsigned long)end & (unsigned long)PAGE_MASK))) return NULL; - /* Allow if start and end are inside the same compound page. */ + /* Allow if fully inside the same compound (__GFP_COMP) page. */ endpage = virt_to_head_page(end); if (likely(endpage == page)) return NULL; @@ -199,20 +184,44 @@ static inline const char *check_heap_object(const void *ptr, unsigned long n, is_reserved = PageReserved(page); is_cma = is_migrate_cma_page(page); if (!is_reserved && !is_cma) - goto reject; + return ""; for (ptr += PAGE_SIZE; ptr <= end; ptr += PAGE_SIZE) { page = virt_to_head_page(ptr); if (is_reserved && !PageReserved(page)) - goto reject; + return ""; if (is_cma && !is_migrate_cma_page(page)) - goto reject; + return ""; } +#endif return NULL; +} + +static inline const char *check_heap_object(const void *ptr, unsigned long n, + bool to_user) +{ + struct page *page; + + /* + * Some architectures (arm64) return true for virt_addr_valid() on + * vmalloced addresses. Work around this by checking for vmalloc + * first. + */ + if (is_vmalloc_addr(ptr)) + return NULL; + + if (!virt_addr_valid(ptr)) + return NULL; + + page = virt_to_head_page(ptr); + + /* Check slab allocator for flags and size. */ + if (PageSlab(page)) + return __check_heap_object(ptr, n, page); -reject: - return ""; + /* Verify object does not incorrectly span multiple pages. */ + return check_page_span(ptr, n, page, to_user); } /* diff --git a/security/Kconfig b/security/Kconfig index da10d9b..2dfc0ce 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -147,6 +147,17 @@ config HARDENED_USERCOPY or are part of the kernel text. This kills entire classes of heap overflow exploits and similar kernel memory exposures. +config HARDENED_USERCOPY_PAGESPAN + bool "Refuse to copy allocations that span multiple pages" + depends on HARDENED_USERCOPY + depends on !COMPILE_TEST + help + When a multi-page allocation is done without __GFP_COMP, + hardened usercopy will reject attempts to copy it. There are, + however, several cases of this in the kernel that have not all + been removed. This config is intended to be used only while + trying to find such users. + source security/selinux/Kconfig source security/smack/Kconfig source security/tomoyo/Kconfig -- cgit v0.10.2 From c6c864993d9a20f8d7cacb4feaac5c46a2f2e4db Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 24 Aug 2016 13:51:33 +0200 Subject: Revert "gpio: include in gpiolib-of" This reverts commit 7d4defe21c682c934a19fce1ba8b54b7bde61b08. The commit was pointless, manically trembling in the dark for a solution. The real fixes are: commit 048c28c91e56 ("gpio: make any OF dependent driver depend on OF_GPIO") commit 2527ecc9195e ("gpio: Fix OF build problem on UM") Reported-by: Chris Wilson Signed-off-by: Linus Walleij diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 75e7b39..a28feb3 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -16,7 +16,6 @@ #include #include #include -#include #include #include #include -- cgit v0.10.2 From 60f749f8e4cfdfffa5f29c966050ed680eeedac2 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 7 Sep 2016 23:13:20 +0200 Subject: gpio: mcp23s08: make driver depend on OF_GPIO The MCP23S08 driver certainly accesses fields inside the struct gpio_chip that are only available under CONFIG_OF_GPIO not just CONFIG_OF, so update the Kconfig and driver to reflect this. Cc: Alexander Stein Cc: Phil Reid Reported-by: kbuild test robot Signed-off-by: Linus Walleij diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 66a9410..24caedb 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1131,6 +1131,7 @@ menu "SPI or I2C GPIO expanders" config GPIO_MCP23S08 tristate "Microchip MCP23xxx I/O expander" + depends on OF_GPIO select GPIOLIB_IRQCHIP help SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index ac22efc..99d37b5 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -564,7 +564,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, mcp->chip.direction_output = mcp23s08_direction_output; mcp->chip.set = mcp23s08_set; mcp->chip.dbg_show = mcp23s08_dbg_show; -#ifdef CONFIG_OF +#ifdef CONFIG_OF_GPIO mcp->chip.of_gpio_n_cells = 2; mcp->chip.of_node = dev->of_node; #endif -- cgit v0.10.2 From 56beac95cb88c188d2a885825a5da131edb41fe3 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 29 Aug 2016 11:24:10 +0100 Subject: gpio: sa1100: fix irq probing for ucb1x00 ucb1x00 has used IRQ probing since it's dawn to find the GPIO interrupt that it's connected to. However, commit 23393d49fb75 ("gpio: kill off set_irq_flags usage") broke this by disabling IRQ probing on GPIO interrupts. Fix this. Fixes: 23393d49fb75 ("gpio: kill off set_irq_flags usage") Signed-off-by: Russell King Signed-off-by: Linus Walleij diff --git a/drivers/gpio/gpio-sa1100.c b/drivers/gpio/gpio-sa1100.c index 0c99e8f..8d8ee0e 100644 --- a/drivers/gpio/gpio-sa1100.c +++ b/drivers/gpio/gpio-sa1100.c @@ -155,7 +155,7 @@ static int sa1100_gpio_irqdomain_map(struct irq_domain *d, { irq_set_chip_and_handler(irq, &sa1100_gpio_irq_chip, handle_edge_irq); - irq_set_noprobe(irq); + irq_set_probe(irq); return 0; } -- cgit v0.10.2 From 9dd4aaef194e45d96c2d0b6232a9cbc5430ad789 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 6 Sep 2016 20:22:21 -0700 Subject: MAINTAINERS: Update CPMAC email address Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller diff --git a/MAINTAINERS b/MAINTAINERS index 0537211..c747921 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3268,7 +3268,7 @@ S: Maintained F: drivers/net/wan/cosa* CPMAC ETHERNET DRIVER -M: Florian Fainelli +M: Florian Fainelli L: netdev@vger.kernel.org S: Maintained F: drivers/net/ethernet/ti/cpmac.c -- cgit v0.10.2 From caa58f808834fca9a4443233fd09df5ab639690d Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 6 Sep 2016 14:17:18 +1000 Subject: powerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE In pnv_ioda_free_pe(), the PE object (including the associated PE number) is cleared before resetting the corresponding bit in the PE allocation bitmap. It means PE#0 is always released to the bitmap wrongly. This fixes above issue by caching the PE number before the PE object is cleared. Fixes: 1e9167726c41 ("powerpc/powernv: Use PE instead of number during setup and release" Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 18f6fd1..c16d790 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -162,11 +162,12 @@ static struct pnv_ioda_pe *pnv_ioda_alloc_pe(struct pnv_phb *phb) static void pnv_ioda_free_pe(struct pnv_ioda_pe *pe) { struct pnv_phb *phb = pe->phb; + unsigned int pe_num = pe->pe_number; WARN_ON(pe->pdev); memset(pe, 0, sizeof(struct pnv_ioda_pe)); - clear_bit(pe->pe_number, phb->ioda.pe_alloc); + clear_bit(pe_num, phb->ioda.pe_alloc); } /* The default M64 BAR is shared by all PEs */ -- cgit v0.10.2 From 8540571e01f973d321b0821f4f32ed6e9ae8263c Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Fri, 26 Aug 2016 16:45:13 +0200 Subject: powerpc/32: Fix again csum_partial_copy_generic() Commit 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic() based on copy_tofrom_user()") introduced a bug when destination address is odd and len is lower than cacheline size. In that case the resulting csum value doesn't have to be rotated one byte because the cache-aligned copy part is skipped so no alignment is performed. Fixes: 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic() based on copy_tofrom_user()") Cc: stable@vger.kernel.org # v4.6+ Reported-by: Alessio Igor Bogani Signed-off-by: Christophe Leroy Tested-by: Alessio Igor Bogani Signed-off-by: Michael Ellerman diff --git a/arch/powerpc/lib/checksum_32.S b/arch/powerpc/lib/checksum_32.S index 0a57fe6..aa8214f 100644 --- a/arch/powerpc/lib/checksum_32.S +++ b/arch/powerpc/lib/checksum_32.S @@ -127,18 +127,19 @@ _GLOBAL(csum_partial_copy_generic) stw r7,12(r1) stw r8,8(r1) - rlwinm r0,r4,3,0x8 - rlwnm r6,r6,r0,0,31 /* odd destination address: rotate one byte */ - cmplwi cr7,r0,0 /* is destination address even ? */ addic r12,r6,0 addi r6,r4,-4 neg r0,r4 addi r4,r3,-4 andi. r0,r0,CACHELINE_MASK /* # bytes to start of cache line */ + crset 4*cr7+eq beq 58f cmplw 0,r5,r0 /* is this more than total to do? */ blt 63f /* if not much to do */ + rlwinm r7,r6,3,0x8 + rlwnm r12,r12,r7,0,31 /* odd destination address: rotate one byte */ + cmplwi cr7,r7,0 /* is destination address even ? */ andi. r8,r0,3 /* get it word-aligned first */ mtctr r8 beq+ 61f -- cgit v0.10.2 From f077aaf0754bcba0fffdbd925bc12f09cd1e38aa Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Fri, 2 Sep 2016 21:47:59 +1000 Subject: powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET In commit c60ac5693c47 ("powerpc: Update kernel VSID range", 2013-03-13) we lost a check on the region number (the top four bits of the effective address) for addresses below PAGE_OFFSET. That commit replaced a check that the top 18 bits were all zero with a check that bits 46 - 59 were zero (performed for all addresses, not just user addresses). This means that userspace can access an address like 0x1000_0xxx_xxxx_xxxx and we will insert a valid SLB entry for it. The VSID used will be the same as if the top 4 bits were 0, but the page size will be some random value obtained by indexing beyond the end of the mm_ctx_high_slices_psize array in the paca. If that page size is the same as would be used for region 0, then userspace just has an alias of the region 0 space. If the page size is different, then no HPTE will be found for the access, and the process will get a SIGSEGV (since hash_page_mm() will refuse to create a HPTE for the bogus address). The access beyond the end of the mm_ctx_high_slices_psize can be at most 5.5MB past the array, and so will be in RAM somewhere. Since the access is a load performed in real mode, it won't fault or crash the kernel. At most this bug could perhaps leak a little bit of information about blocks of 32 bytes of memory located at offsets of i * 512kB past the paca->mm_ctx_high_slices_psize array, for 1 <= i <= 11. Fixes: c60ac5693c47 ("powerpc: Update kernel VSID range") Cc: stable@vger.kernel.org # v3.9+ Signed-off-by: Paul Mackerras Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index dfdb90c..9f19834 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -113,7 +113,12 @@ BEGIN_FTR_SECTION END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT) b slb_finish_load_1T -0: +0: /* + * For userspace addresses, make sure this is region 0. + */ + cmpdi r9, 0 + bne 8f + /* when using slices, we extract the psize off the slice bitmaps * and then we need to get the sllp encoding off the mmu_psize_defs * array. -- cgit v0.10.2 From d8b795f5e3a3f81e0635919b3c9cd746631a6a76 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Wed, 7 Sep 2016 21:16:40 -0700 Subject: Revert "ARM: tegra: fix erroneous address in dts" This reverts commit b5c86b7496d74f6e454bcab5166efa023e1f0459. This is no longer needed due to other changes going into 4.8 to rename the unit addresses on a large number of device nodes. So it was picked up for v4.8-rc1 in error. Reported-by: Ralf Ramsauer Signed-off-by: Olof Johansson diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts index 6403e0d..e52b824 100644 --- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts +++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts @@ -1382,7 +1382,7 @@ * Pin 41: BR_UART1_TXD * Pin 44: BR_UART1_RXD */ - serial@0,70006000 { + serial@70006000 { compatible = "nvidia,tegra124-hsuart", "nvidia,tegra30-hsuart"; status = "okay"; }; @@ -1394,7 +1394,7 @@ * Pin 71: UART2_CTS_L * Pin 74: UART2_RTS_L */ - serial@0,70006040 { + serial@70006040 { compatible = "nvidia,tegra124-hsuart", "nvidia,tegra30-hsuart"; status = "okay"; }; -- cgit v0.10.2 From 1d3ef9c2dc699fcc09320a4b642e84eb3c038f26 Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Mon, 5 Sep 2016 16:27:53 +0100 Subject: arm-cci: pmu: Fix typo in event name For one of the CCI events exposed under sysfs, "snoop" was typo'd as "snopp". Correct this such that users see the expected event name when enumerating events via sysfs. Cc: arm@kernel.org Acked-by: Mark Rutland Signed-off-by: Suzuki K Poulose Signed-off-by: Olof Johansson diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c index 5755907f..ffa7c9d 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -551,7 +551,7 @@ static struct attribute *cci5xx_pmu_event_attrs[] = { CCI5xx_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_wrq, 0xB), CCI5xx_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_cd_hs, 0xC), CCI5xx_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_rq_stall_addr_hazard, 0xD), - CCI5xx_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snopp_rq_stall_tt_full, 0xE), + CCI5xx_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_rq_stall_tt_full, 0xE), CCI5xx_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_rq_tzmp1_prot, 0xF), NULL }; -- cgit v0.10.2 From db91e2370e087967cb6b6425c092188767fb5e00 Mon Sep 17 00:00:00 2001 From: Daniel Baluta Date: Wed, 7 Sep 2016 19:49:34 +0930 Subject: tools/lguest: Don't bork the terminal in case of wrong args Running lguest without arguments or with a wrong argument name borks the terminal, because the cleanup handler is set up too late in the initialization process. Signed-off-by: Daniel Baluta Signed-off-by: Rusty Russell Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Signed-off-by: Ingo Molnar diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index d9836c5..11c8d9b 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -3266,6 +3266,9 @@ int main(int argc, char *argv[]) } } + /* If we exit via err(), this kills all the threads, restores tty. */ + atexit(cleanup_devices); + /* We always have a console device, and it's always device 1. */ setup_console(); @@ -3369,9 +3372,6 @@ int main(int argc, char *argv[]) /* Ensure that we terminate if a device-servicing child dies. */ signal(SIGCHLD, kill_launcher); - /* If we exit via err(), this kills all the threads, restores tty. */ - atexit(cleanup_devices); - /* If requested, chroot to a directory */ if (chroot_path) { if (chroot(chroot_path) != 0) -- cgit v0.10.2 From c291b015158577be533dd5a959dfc09bab119eed Mon Sep 17 00:00:00 2001 From: Dou Liyang Date: Wed, 7 Sep 2016 10:21:33 +0800 Subject: x86/apic: Fix num_processors value in case of failure If the topology package map check of the APIC ID and the CPU is a failure, we don't generate the processor info for that APIC ID yet we increase disabled_cpus by one - which is buggy. Only increase num_processors once we are sure we don't fail. Signed-off-by: Dou Liyang Acked-by: David Rientjes Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1473214893-16481-1-git-send-email-douly.fnst@cn.fujitsu.com [ Rewrote the changelog. ] Signed-off-by: Ingo Molnar diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 50c95af..f3e9b2d 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2093,7 +2093,6 @@ int generic_processor_info(int apicid, int version) return -EINVAL; } - num_processors++; if (apicid == boot_cpu_physical_apicid) { /* * x86_bios_cpu_apicid is required to have processors listed @@ -2116,10 +2115,13 @@ int generic_processor_info(int apicid, int version) pr_warning("APIC: Package limit reached. Processor %d/0x%x ignored.\n", thiscpu, apicid); + disabled_cpus++; return -ENOSPC; } + num_processors++; + /* * Validate version */ -- cgit v0.10.2 From bcf42aa60c2832510b9be0f30c090bfd35bb172d Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Wed, 7 Sep 2016 17:26:33 +0300 Subject: xhci: fix null pointer dereference in stop command timeout function The stop endpoint command has its own 5 second timeout timer. If the timeout function is triggered between USB3 and USB2 host removal it will try to call usb_hc_died(xhci_to_hcd(xhci)->primary_hcd) the ->primary_hcd will be set to NULL at USB3 hcd removal. Fix this by first checking if the PCI host is being removed, and also by using only xhci_to_hcd() as it will always return the primary hcd. CC: Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index fd9fd12..797137e 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -850,6 +850,10 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) spin_lock_irqsave(&xhci->lock, flags); ep->stop_cmds_pending--; + if (xhci->xhc_state & XHCI_STATE_REMOVING) { + spin_unlock_irqrestore(&xhci->lock, flags); + return; + } if (xhci->xhc_state & XHCI_STATE_DYING) { xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Stop EP timer ran, but another timer marked " @@ -903,7 +907,7 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) spin_unlock_irqrestore(&xhci->lock, flags); xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Calling usb_hc_died()"); - usb_hc_died(xhci_to_hcd(xhci)->primary_hcd); + usb_hc_died(xhci_to_hcd(xhci)); xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "xHCI host controller is dead."); } -- cgit v0.10.2 From 9b41b92bbae6a4d3e1f3adde87864fd481037814 Mon Sep 17 00:00:00 2001 From: Allen Hung Date: Fri, 15 Jul 2016 17:42:22 +0800 Subject: dmi-id: don't free dev structure after calling device_register dmi_dev is freed in error exit code but, according to the document of device_register, it should never directly free device structure after calling this function, even if it returned an error! Use put_device() instead. Signed-off-by: Allen Hung Signed-off-by: Jean Delvare diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c index 94a58a0..44c0139 100644 --- a/drivers/firmware/dmi-id.c +++ b/drivers/firmware/dmi-id.c @@ -229,14 +229,14 @@ static int __init dmi_id_init(void) ret = device_register(dmi_dev); if (ret) - goto fail_free_dmi_dev; + goto fail_put_dmi_dev; return 0; -fail_free_dmi_dev: - kfree(dmi_dev); -fail_class_unregister: +fail_put_dmi_dev: + put_device(dmi_dev); +fail_class_unregister: class_unregister(&dmi_class); return ret; -- cgit v0.10.2 From 9f8a7658bcafb2a7853f7a2eae8a94e87e6e695b Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 7 Sep 2016 15:45:31 +0200 Subject: ALSA: timer: Fix zero-division by continue of uninitialized instance When a user timer instance is continued without the explicit start beforehand, the system gets eventually zero-division error like: divide error: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN CPU: 1 PID: 27320 Comm: syz-executor Not tainted 4.8.0-rc3-next-20160825+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88003c9b2280 task.stack: ffff880027280000 RIP: 0010:[] [< inline >] ktime_divns include/linux/ktime.h:195 RIP: 0010:[] [] snd_hrtimer_callback+0x1bc/0x3c0 sound/core/hrtimer.c:62 Call Trace: [< inline >] __run_hrtimer kernel/time/hrtimer.c:1238 [] __hrtimer_run_queues+0x325/0xe70 kernel/time/hrtimer.c:1302 [] hrtimer_interrupt+0x18b/0x420 kernel/time/hrtimer.c:1336 [] local_apic_timer_interrupt+0x6f/0xe0 arch/x86/kernel/apic/apic.c:933 [] smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:957 [] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:487 ..... Although a similar issue was spotted and a fix patch was merged in commit [6b760bb2c63a: ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE], it seems covering only a part of iceberg. In this patch, we fix the issue a bit more drastically. Basically the continue of an uninitialized timer is supposed to be a fresh start, so we do it for user timers. For the direct snd_timer_continue() call, there is no way to pass the initial tick value, so we kick out for the uninitialized case. Reported-by: Dmitry Vyukov Cc: Signed-off-by: Takashi Iwai diff --git a/sound/core/timer.c b/sound/core/timer.c index 2706061..fc144f4 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -35,6 +35,9 @@ #include #include +/* internal flags */ +#define SNDRV_TIMER_IFLG_PAUSED 0x00010000 + #if IS_ENABLED(CONFIG_SND_HRTIMER) #define DEFAULT_TIMER_LIMIT 4 #else @@ -539,6 +542,10 @@ static int snd_timer_stop1(struct snd_timer_instance *timeri, bool stop) } } timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START); + if (stop) + timeri->flags &= ~SNDRV_TIMER_IFLG_PAUSED; + else + timeri->flags |= SNDRV_TIMER_IFLG_PAUSED; snd_timer_notify1(timeri, stop ? SNDRV_TIMER_EVENT_STOP : SNDRV_TIMER_EVENT_CONTINUE); unlock: @@ -600,6 +607,10 @@ int snd_timer_stop(struct snd_timer_instance *timeri) */ int snd_timer_continue(struct snd_timer_instance *timeri) { + /* timer can continue only after pause */ + if (!(timeri->flags & SNDRV_TIMER_IFLG_PAUSED)) + return -EINVAL; + if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) return snd_timer_start_slave(timeri, false); else @@ -1831,6 +1842,9 @@ static int snd_timer_user_continue(struct file *file) tu = file->private_data; if (!tu->timeri) return -EBADFD; + /* start timer instead of continue if it's not used before */ + if (!(tu->timeri->flags & SNDRV_TIMER_IFLG_PAUSED)) + return snd_timer_user_start(file); tu->timeri->lost = 0; return (err = snd_timer_continue(tu->timeri)) < 0 ? err : 0; } -- cgit v0.10.2 From 816f318b2364262a51024096da7ca3b84e78e3b5 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 30 Aug 2016 14:45:46 +0200 Subject: ALSA: rawmidi: Fix possible deadlock with virmidi registration When a seq-virmidi driver is initialized, it registers a rawmidi instance with its callback to create an associated seq kernel client. Currently it's done throughly in rawmidi's register_mutex context. Recently it was found that this may lead to a deadlock another rawmidi device that is being attached with the sequencer is accessed, as both open with the same register_mutex. This was actually triggered by syzkaller, as Dmitry Vyukov reported: ====================================================== [ INFO: possible circular locking dependency detected ] 4.8.0-rc1+ #11 Not tainted ------------------------------------------------------- syz-executor/7154 is trying to acquire lock: (register_mutex#5){+.+.+.}, at: [] snd_rawmidi_kernel_open+0x4b/0x260 sound/core/rawmidi.c:341 but task is already holding lock: (&grp->list_mutex){++++.+}, at: [] check_and_subscribe_port+0x5b/0x5c0 sound/core/seq/seq_ports.c:495 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&grp->list_mutex){++++.+}: [] lock_acquire+0x208/0x430 kernel/locking/lockdep.c:3746 [] down_read+0x49/0xc0 kernel/locking/rwsem.c:22 [< inline >] deliver_to_subscribers sound/core/seq/seq_clientmgr.c:681 [] snd_seq_deliver_event+0x35e/0x890 sound/core/seq/seq_clientmgr.c:822 [] > snd_seq_kernel_client_dispatch+0x126/0x170 sound/core/seq/seq_clientmgr.c:2418 [] snd_seq_system_broadcast+0xb2/0xf0 sound/core/seq/seq_system.c:101 [] snd_seq_create_kernel_client+0x24a/0x330 sound/core/seq/seq_clientmgr.c:2297 [< inline >] snd_virmidi_dev_attach_seq sound/core/seq/seq_virmidi.c:383 [] snd_virmidi_dev_register+0x29f/0x750 sound/core/seq/seq_virmidi.c:450 [] snd_rawmidi_dev_register+0x30c/0xd40 sound/core/rawmidi.c:1645 [] __snd_device_register.part.0+0x63/0xc0 sound/core/device.c:164 [< inline >] __snd_device_register sound/core/device.c:162 [] snd_device_register_all+0xad/0x110 sound/core/device.c:212 [] snd_card_register+0xef/0x6c0 sound/core/init.c:749 [] snd_virmidi_probe+0x3ef/0x590 sound/drivers/virmidi.c:123 [] platform_drv_probe+0x8b/0x170 drivers/base/platform.c:564 ...... -> #0 (register_mutex#5){+.+.+.}: [< inline >] check_prev_add kernel/locking/lockdep.c:1829 [< inline >] check_prevs_add kernel/locking/lockdep.c:1939 [< inline >] validate_chain kernel/locking/lockdep.c:2266 [] __lock_acquire+0x4d44/0x4d80 kernel/locking/lockdep.c:3335 [] lock_acquire+0x208/0x430 kernel/locking/lockdep.c:3746 [< inline >] __mutex_lock_common kernel/locking/mutex.c:521 [] mutex_lock_nested+0xb1/0xa20 kernel/locking/mutex.c:621 [] snd_rawmidi_kernel_open+0x4b/0x260 sound/core/rawmidi.c:341 [] midisynth_subscribe+0xf7/0x350 sound/core/seq/seq_midi.c:188 [< inline >] subscribe_port sound/core/seq/seq_ports.c:427 [] check_and_subscribe_port+0x467/0x5c0 sound/core/seq/seq_ports.c:510 [] snd_seq_port_connect+0x2c9/0x500 sound/core/seq/seq_ports.c:579 [] snd_seq_ioctl_subscribe_port+0x1d8/0x2b0 sound/core/seq/seq_clientmgr.c:1480 [] snd_seq_do_ioctl+0x184/0x1e0 sound/core/seq/seq_clientmgr.c:2225 [] snd_seq_kernel_client_ctl+0xa8/0x110 sound/core/seq/seq_clientmgr.c:2440 [] snd_seq_oss_midi_open+0x3b4/0x610 sound/core/seq/oss/seq_oss_midi.c:375 [] snd_seq_oss_synth_setup_midi+0x107/0x4c0 sound/core/seq/oss/seq_oss_synth.c:281 [] snd_seq_oss_open+0x748/0x8d0 sound/core/seq/oss/seq_oss_init.c:274 [] odev_open+0x6a/0x90 sound/core/seq/oss/seq_oss.c:138 [] soundcore_open+0x30f/0x640 sound/sound_core.c:639 ...... other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&grp->list_mutex); lock(register_mutex#5); lock(&grp->list_mutex); lock(register_mutex#5); *** DEADLOCK *** ====================================================== The fix is to simply move the registration parts in snd_rawmidi_dev_register() to the outside of the register_mutex lock. The lock is needed only to manage the linked list, and it's not necessarily to cover the whole initialization process. Reported-by: Dmitry Vyukov Cc: Signed-off-by: Takashi Iwai diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 795437b..b450a27 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -1633,11 +1633,13 @@ static int snd_rawmidi_dev_register(struct snd_device *device) return -EBUSY; } list_add_tail(&rmidi->list, &snd_rawmidi_devices); + mutex_unlock(®ister_mutex); err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device, &snd_rawmidi_f_ops, rmidi, &rmidi->dev); if (err < 0) { rmidi_err(rmidi, "unable to register\n"); + mutex_lock(®ister_mutex); list_del(&rmidi->list); mutex_unlock(®ister_mutex); return err; @@ -1645,6 +1647,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device) if (rmidi->ops && rmidi->ops->dev_register && (err = rmidi->ops->dev_register(rmidi)) < 0) { snd_unregister_device(&rmidi->dev); + mutex_lock(®ister_mutex); list_del(&rmidi->list); mutex_unlock(®ister_mutex); return err; @@ -1677,7 +1680,6 @@ static int snd_rawmidi_dev_register(struct snd_device *device) } } #endif /* CONFIG_SND_OSSEMUL */ - mutex_unlock(®ister_mutex); sprintf(name, "midi%d", rmidi->device); entry = snd_info_create_card_entry(rmidi->card, name, rmidi->card->proc_root); if (entry) { -- cgit v0.10.2 From a4497a86fb9b855c5ac8503fdc959393b00bb643 Mon Sep 17 00:00:00 2001 From: Prarit Bhargava Date: Thu, 8 Sep 2016 10:15:28 -0400 Subject: x86, clock: Fix kvm guest tsc initialization MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When booting a kvm guest on AMD with the latest kernel the following messages are displayed in the boot log: tsc: Unable to calibrate against PIT tsc: HPET/PMTIMER calibration failed aa297292d708 ("x86/tsc: Enumerate SKL cpu_khz and tsc_khz via CPUID") introduced a change to account for a difference in cpu and tsc frequencies for Intel SKL processors. Before this change the native tsc set x86_platform.calibrate_tsc to native_calibrate_tsc() which is a hardware calibration of the tsc, and in tsc_init() executed tsc_khz = x86_platform.calibrate_tsc(); cpu_khz = tsc_khz; The kvm code changed x86_platform.calibrate_tsc to kvm_get_tsc_khz() and executed the same tsc_init() function. This meant that KVM guests did not execute the native hardware calibration function. After aa297292d708, there are separate native calibrations for cpu_khz and tsc_khz. The code sets x86_platform.calibrate_tsc to native_calibrate_tsc() which is now an Intel specific calibration function, and x86_platform.calibrate_cpu to native_calibrate_cpu() which is the "old" native_calibrate_tsc() function (ie, the native hardware calibration function). tsc_init() now does cpu_khz = x86_platform.calibrate_cpu(); tsc_khz = x86_platform.calibrate_tsc(); if (tsc_khz == 0) tsc_khz = cpu_khz; else if (abs(cpu_khz - tsc_khz) * 10 > tsc_khz) cpu_khz = tsc_khz; The kvm code should not call the hardware initialization in native_calibrate_cpu(), as it isn't applicable for kvm and it didn't do that prior to aa297292d708. This patch resolves this issue by setting x86_platform.calibrate_cpu to kvm_get_tsc_khz(). v2: I had originally set x86_platform.calibrate_cpu to cpu_khz_from_cpuid(), however, pbonzini pointed out that the CPUID leaf in that function is not available in KVM. I have changed the function pointer to kvm_get_tsc_khz(). Fixes: aa297292d708 ("x86/tsc: Enumerate SKL cpu_khz and tsc_khz via CPUID") Signed-off-by: Prarit Bhargava Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Cc: Len Brown Cc: "Peter Zijlstra (Intel)" Cc: Borislav Petkov Cc: Adrian Hunter Cc: "Christopher S. Hall" Cc: David Woodhouse Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index 1d39bfb..3692249 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -289,6 +289,7 @@ void __init kvmclock_init(void) put_cpu(); x86_platform.calibrate_tsc = kvm_get_tsc_khz; + x86_platform.calibrate_cpu = kvm_get_tsc_khz; x86_platform.get_wallclock = kvm_get_wallclock; x86_platform.set_wallclock = kvm_set_wallclock; #ifdef CONFIG_X86_LOCAL_APIC -- cgit v0.10.2 From e35478eac030990e23a56bf11dc074c5a069124a Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 23 Aug 2016 17:28:03 +0200 Subject: i2c: mux: demux-pinctrl: run properly with multiple instances We can't use a static property for all the changesets, so we now create dynamic ones for each changeset. Signed-off-by: Wolfram Sang Fixes: 50a5ba87690814 ("i2c: mux: demux-pinctrl: add driver") Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c index b6b9d25..b3893f6 100644 --- a/drivers/i2c/muxes/i2c-demux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c @@ -37,8 +37,6 @@ struct i2c_demux_pinctrl_priv { struct i2c_demux_pinctrl_chan chan[]; }; -static struct property status_okay = { .name = "status", .length = 3, .value = "ok" }; - static int i2c_demux_master_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) { struct i2c_demux_pinctrl_priv *priv = adap->algo_data; @@ -193,6 +191,7 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct i2c_demux_pinctrl_priv *priv; + struct property *props; int num_chan, i, j, err; num_chan = of_count_phandle_with_args(np, "i2c-parent", NULL); @@ -203,7 +202,10 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev) priv = devm_kzalloc(&pdev->dev, sizeof(*priv) + num_chan * sizeof(struct i2c_demux_pinctrl_chan), GFP_KERNEL); - if (!priv) + + props = devm_kcalloc(&pdev->dev, num_chan, sizeof(*props), GFP_KERNEL); + + if (!priv || !props) return -ENOMEM; err = of_property_read_string(np, "i2c-bus-name", &priv->bus_name); @@ -221,8 +223,12 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev) } priv->chan[i].parent_np = adap_np; + props[i].name = devm_kstrdup(&pdev->dev, "status", GFP_KERNEL); + props[i].value = devm_kstrdup(&pdev->dev, "ok", GFP_KERNEL); + props[i].length = 3; + of_changeset_init(&priv->chan[i].chgset); - of_changeset_update_property(&priv->chan[i].chgset, adap_np, &status_okay); + of_changeset_update_property(&priv->chan[i].chgset, adap_np, &props[i]); } priv->num_chan = num_chan; -- cgit v0.10.2 From 30851a7c2155d0b321485e66386ea99191d8b3f5 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Thu, 25 Aug 2016 19:27:40 +0200 Subject: Documentation: i2c: slave-interface: add note for driver development Make it clear that adding slave support shall not disable master functionality. We can have both, so we should. Signed-off-by: Wolfram Sang diff --git a/Documentation/i2c/slave-interface b/Documentation/i2c/slave-interface index 80807ad..7e2a228 100644 --- a/Documentation/i2c/slave-interface +++ b/Documentation/i2c/slave-interface @@ -145,6 +145,11 @@ If you want to add slave support to the bus driver: * Catch the slave interrupts and send appropriate i2c_slave_events to the backend. +Note that most hardware supports being master _and_ slave on the same bus. So, +if you extend a bus driver, please make sure that the driver supports that as +well. In almost all cases, slave support does not need to disable the master +functionality. + Check the i2c-rcar driver as an example. -- cgit v0.10.2 From 47a7b0d8888c04c9746812820b6e60553cc77bbc Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Sun, 4 Sep 2016 22:17:28 -0400 Subject: md-cluster: make md-cluster also can work when compiled into kernel The md-cluster is compiled as module by default, if it is compiled by built-in way, then we can't make md-cluster works. [64782.630008] md/raid1:md127: active with 2 out of 2 mirrors [64782.630528] md-cluster module not found. [64782.630530] md127: Could not setup cluster service (-2) Fixes: edb39c9 ("Introduce md_cluster_operations to handle cluster functions") Cc: stable@vger.kernel.org (v4.1+) Reported-by: Marc Smith Reviewed-by: NeilBrown Signed-off-by: Guoqing Jiang Signed-off-by: Shaohua Li diff --git a/drivers/md/md.c b/drivers/md/md.c index 67642ba..915e84d 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7610,16 +7610,12 @@ EXPORT_SYMBOL(unregister_md_cluster_operations); int md_setup_cluster(struct mddev *mddev, int nodes) { - int err; - - err = request_module("md-cluster"); - if (err) { - pr_err("md-cluster module not found.\n"); - return -ENOENT; - } - + if (!md_cluster_ops) + request_module("md-cluster"); spin_lock(&pers_lock); + /* ensure module won't be unloaded */ if (!md_cluster_ops || !try_module_get(md_cluster_mod)) { + pr_err("can't find md-cluster module or get it's reference.\n"); spin_unlock(&pers_lock); return -ENOENT; } -- cgit v0.10.2 From 664d58bf4d3406dc4404e29bcb8c89fd22589d57 Mon Sep 17 00:00:00 2001 From: Zhuo-hao Lee Date: Sat, 27 Aug 2016 15:39:30 +0800 Subject: i2c: designware: save the preset value of DW_IC_SDA_HOLD There are several ways to set the SDA hold time for i2c controller, including: Device Tree, built-in device properties and ACPI. However, if the SDA hold time is not specified by above method, we should read the value, where it is preset by firmware, and save it to sda_hold_time. This is needed because when i2c controller enters runtime suspend, the DW_IC_SDA_HOLD value will be reset to chipset default value. And during runtime resume, i2c_dw_init will be called to reconfigure i2c controller. If sda_hold_time is zero, the chipset default hold time will be used, that will be too short for some platforms. Therefore, to have a better tolerance, the DW_IC_SDA_HOLD value should be kept by sda_hold_time. Signed-off-by: Zhuo-hao Lee Reviewed-by: Andy Shevchenko Acked-by: Jarkko Nikula Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index c6922b8..fcd973d 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -367,13 +367,17 @@ int i2c_dw_init(struct dw_i2c_dev *dev) dev_dbg(dev->dev, "Fast-mode HCNT:LCNT = %d:%d\n", hcnt, lcnt); /* Configure SDA Hold Time if required */ - if (dev->sda_hold_time) { - reg = dw_readl(dev, DW_IC_COMP_VERSION); - if (reg >= DW_IC_SDA_HOLD_MIN_VERS) + reg = dw_readl(dev, DW_IC_COMP_VERSION); + if (reg >= DW_IC_SDA_HOLD_MIN_VERS) { + if (dev->sda_hold_time) { dw_writel(dev, dev->sda_hold_time, DW_IC_SDA_HOLD); - else - dev_warn(dev->dev, - "Hardware too old to adjust SDA hold time."); + } else { + /* Keep previous hold time setting if no one set it */ + dev->sda_hold_time = dw_readl(dev, DW_IC_SDA_HOLD); + } + } else { + dev_warn(dev->dev, + "Hardware too old to adjust SDA hold time.\n"); } /* Configure Tx/Rx FIFO threshold levels */ -- cgit v0.10.2 From e0603c8dd298171bd64227c65c6bbd6a861e1a78 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 31 Aug 2016 11:38:48 +0200 Subject: i2c: Spelling s/acknowedge/acknowledge/ Signed-off-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c index 90bbd9f..3c16a2f 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -767,7 +767,7 @@ static int cdns_i2c_setclk(unsigned long clk_in, struct cdns_i2c *id) * depending on the scaling direction. * * Return: NOTIFY_STOP if the rate change should be aborted, NOTIFY_OK - * to acknowedge the change, NOTIFY_DONE if the notification is + * to acknowledge the change, NOTIFY_DONE if the notification is * considered irrelevant. */ static int cdns_i2c_clk_notifier_cb(struct notifier_block *nb, unsigned long diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index 2bc8b01..dce1abd 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -918,7 +918,7 @@ static void rk3x_i2c_adapt_div(struct rk3x_i2c *i2c, unsigned long clk_rate) * Code adapted from i2c-cadence.c. * * Return: NOTIFY_STOP if the rate change should be aborted, NOTIFY_OK - * to acknowedge the change, NOTIFY_DONE if the notification is + * to acknowledge the change, NOTIFY_DONE if the notification is * considered irrelevant. */ static int rk3x_i2c_clk_notifier_cb(struct notifier_block *nb, unsigned long -- cgit v0.10.2 From cbfff439c54f37fc363b1d365183fa61af43585c Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Mon, 29 Aug 2016 14:22:36 -0700 Subject: i2c: rk3x: Restore clock settings at resume time Depending on a number of factors including: - Which exact Rockchip SoC we're working with - How deep we suspend - Which i2c port we're on We might lose the state of the i2c registers at suspend time. Specifically we've found that on rk3399 the i2c ports that are not in the PMU power domain lose their state with the current suspend depth configured by ARM Tursted Firmware. Note that there are very few actual i2c registers that aren't configured per transfer anyway so all we actually need to re-configure are the clock config registers. We'll just add a call to rk3x_i2c_adapt_div() at resume time and be done with it. NOTE: On rk3399 on ports whose power was lost, I put printouts in at resume time. I saw things like: before: con=0x00010300, div=0x00060006 after: con=0x00010200, div=0x00180025 Signed-off-by: Douglas Anderson Reviewed-by: David Wu Tested-by: David Wu [wsa: removed duplicate const] Signed-off-by: Wolfram Sang diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index dce1abd..5c5b7ca 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -1111,6 +1111,15 @@ static int rk3x_i2c_xfer(struct i2c_adapter *adap, return ret < 0 ? ret : num; } +static __maybe_unused int rk3x_i2c_resume(struct device *dev) +{ + struct rk3x_i2c *i2c = dev_get_drvdata(dev); + + rk3x_i2c_adapt_div(i2c, clk_get_rate(i2c->clk)); + + return 0; +} + static u32 rk3x_i2c_func(struct i2c_adapter *adap) { return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_PROTOCOL_MANGLING; @@ -1334,12 +1343,15 @@ static int rk3x_i2c_remove(struct platform_device *pdev) return 0; } +static SIMPLE_DEV_PM_OPS(rk3x_i2c_pm_ops, NULL, rk3x_i2c_resume); + static struct platform_driver rk3x_i2c_driver = { .probe = rk3x_i2c_probe, .remove = rk3x_i2c_remove, .driver = { .name = "rk3x-i2c", .of_match_table = rk3x_i2c_match, + .pm = &rk3x_i2c_pm_ops, }, }; -- cgit v0.10.2 From 3732b30a7d88dc32bef76e117067fb397e811703 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 8 Sep 2016 23:05:07 +0200 Subject: cpufreq-stats: Minor documentation fix The cpufreq-stats code can no longer be built as a module, so it now appears with square brackets in menuconfig. Signed-off-by: Jean Delvare Fixes: 1aefc75b2449 (cpufreq: stats: Make the stats code non-modular) Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki diff --git a/Documentation/cpu-freq/cpufreq-stats.txt b/Documentation/cpu-freq/cpufreq-stats.txt index fc64749..8d9773f 100644 --- a/Documentation/cpu-freq/cpufreq-stats.txt +++ b/Documentation/cpu-freq/cpufreq-stats.txt @@ -103,7 +103,7 @@ Config Main Menu Power management options (ACPI, APM) ---> CPU Frequency scaling ---> [*] CPU Frequency scaling - <*> CPU frequency translation statistics + [*] CPU frequency translation statistics [*] CPU frequency translation statistics details -- cgit v0.10.2 From 76061f631c2ea4ab9c4d66f3a96ecc5737f5aaf7 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 7 Sep 2016 08:34:11 -0700 Subject: tcp: fastopen: avoid negative sk_forward_alloc When DATA and/or FIN are carried in a SYN/ACK message or SYN message, we append an skb in socket receive queue, but we forget to call sk_forced_mem_schedule(). Effect is that the socket has a negative sk->sk_forward_alloc as long as the message is not read by the application. Josh Hunt fixed a similar issue in commit d22e15371811 ("tcp: fix tcp fin memory accounting") Fixes: 168a8f58059a ("tcp: TCP Fast Open Server - main code path") Signed-off-by: Eric Dumazet Reviewed-by: Josh Hunt Signed-off-by: David S. Miller diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c index 62a5751..4e777a3 100644 --- a/net/ipv4/tcp_fastopen.c +++ b/net/ipv4/tcp_fastopen.c @@ -150,6 +150,7 @@ void tcp_fastopen_add_skb(struct sock *sk, struct sk_buff *skb) tp->segs_in = 0; tcp_segs_in(tp, skb); __skb_pull(skb, tcp_hdrlen(skb)); + sk_forced_mem_schedule(sk, skb->truesize); skb_set_owner_r(skb, sk); TCP_SKB_CB(skb)->seq++; -- cgit v0.10.2 From 0dbf657c3993a269fa0cd7dabbb9c02741d4aefa Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Wed, 7 Sep 2016 19:07:57 +0300 Subject: net/mlx5e: Fix xmit_more counter race issue Update the xmit_more counter before notifying the HW, to prevent a possible use-after-free of the skb. Fixes: c8cf78fe100b ("net/mlx5e: Add ethtool counter for TX xmit_more") Signed-off-by: Tariq Toukan Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index 988eca9..eb0e725 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -356,6 +356,7 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb) sq->stats.stopped++; } + sq->stats.xmit_more += skb->xmit_more; if (!skb->xmit_more || netif_xmit_stopped(sq->txq)) { int bf_sz = 0; @@ -375,7 +376,6 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb) sq->stats.packets++; sq->stats.bytes += num_bytes; - sq->stats.xmit_more += skb->xmit_more; return NETDEV_TX_OK; dma_unmap_wqe_err: -- cgit v0.10.2 From e7e31ca43d6bedf1c551b1f9c7e78d51c9a45790 Mon Sep 17 00:00:00 2001 From: Bodong Wang Date: Wed, 7 Sep 2016 19:07:58 +0300 Subject: net/mlx5e: Move an_disable_cap bit to a new position Previous an_disable_cap position bit31 is deprecated to be use in driver with newer firmware. New firmware will advertise the same capability in bit29. Old capability didn't allow setting more than one protocol for a specific speed when autoneg is off, while newer firmware will allow this and it is indicated in the new capability location. Signed-off-by: Bodong Wang Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 21bc455..d1f9a58 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -6710,9 +6710,10 @@ struct mlx5_ifc_pude_reg_bits { }; struct mlx5_ifc_ptys_reg_bits { - u8 an_disable_cap[0x1]; + u8 reserved_at_0[0x1]; u8 an_disable_admin[0x1]; - u8 reserved_at_2[0x6]; + u8 an_disable_cap[0x1]; + u8 reserved_at_3[0x5]; u8 local_port[0x8]; u8 reserved_at_10[0xd]; u8 proto_mask[0x3]; -- cgit v0.10.2 From 7abc2110779b133e54ce681a4d0be3d89304eda1 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Wed, 7 Sep 2016 19:07:59 +0300 Subject: net/mlx5e: Prevent casting overflow On 64 bits architectures unsigned long is longer than u32, casting to unsigned long will result in overflow. We need to first allocate an unsigned long variable, then assign the wanted value. Fixes: 665bc53969d7 ('net/mlx5e: Use new ethtool get/set link ksettings API') Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index d0cf8fa..98e1a4a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -659,9 +659,10 @@ out: static void ptys2ethtool_supported_link(unsigned long *supported_modes, u32 eth_proto_cap) { + unsigned long proto_cap = eth_proto_cap; int proto; - for_each_set_bit(proto, (unsigned long *)ð_proto_cap, MLX5E_LINK_MODES_NUMBER) + for_each_set_bit(proto, &proto_cap, MLX5E_LINK_MODES_NUMBER) bitmap_or(supported_modes, supported_modes, ptys2ethtool_table[proto].supported, __ETHTOOL_LINK_MODE_MASK_NBITS); @@ -670,9 +671,10 @@ static void ptys2ethtool_supported_link(unsigned long *supported_modes, static void ptys2ethtool_adver_link(unsigned long *advertising_modes, u32 eth_proto_cap) { + unsigned long proto_cap = eth_proto_cap; int proto; - for_each_set_bit(proto, (unsigned long *)ð_proto_cap, MLX5E_LINK_MODES_NUMBER) + for_each_set_bit(proto, &proto_cap, MLX5E_LINK_MODES_NUMBER) bitmap_or(advertising_modes, advertising_modes, ptys2ethtool_table[proto].advertised, __ETHTOOL_LINK_MODE_MASK_NBITS); -- cgit v0.10.2 From 4e39883d9c7426f8246ef86a32dc6a6f06f5aace Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Wed, 7 Sep 2016 19:08:00 +0300 Subject: net/mlx5e: Fix global PFC counters replication Currently when reading global PFC statistics we left the counter iterator out of the equation and we ended up reading the same counter over and over again. Instead of reading the counter at index 0 on every iteration we now read the counter at index (i). Fixes: e989d5a532ce ('net/mlx5e: Expose flow control counters to ethtool') Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index 98e1a4a..7a346bb 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -331,7 +331,7 @@ static void mlx5e_get_ethtool_stats(struct net_device *dev, if (mlx5e_query_global_pause_combined(priv)) { for (i = 0; i < NUM_PPORT_PER_PRIO_PFC_COUNTERS; i++) { data[idx++] = MLX5E_READ_CTR64_BE(&priv->stats.pport.per_prio_counters[0], - pport_per_prio_pfc_stats_desc, 0); + pport_per_prio_pfc_stats_desc, i); } } -- cgit v0.10.2 From cd17d230dd060a12f7451c0caeedb3fd5158eaf9 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Wed, 7 Sep 2016 19:08:01 +0300 Subject: net/mlx5e: Fix parsing of vlan packets when updating lro header Currently vlan tagged packets were not parsed correctly and assumed to be regular IPv4/IPv6 packets. We should check for 802.1Q/802.1ad tags and update the lro header accordingly. This fixes the use case where LRO is on and rxvlan is off (vlan stripping is off). Fixes: e586b3b0baee ('net/mlx5: Ethernet Datapath files') Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index b6f8ebb..e7c969d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -637,24 +637,32 @@ bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq) static void mlx5e_lro_update_hdr(struct sk_buff *skb, struct mlx5_cqe64 *cqe, u32 cqe_bcnt) { - struct ethhdr *eth = (struct ethhdr *)(skb->data); - struct iphdr *ipv4 = (struct iphdr *)(skb->data + ETH_HLEN); - struct ipv6hdr *ipv6 = (struct ipv6hdr *)(skb->data + ETH_HLEN); + struct ethhdr *eth = (struct ethhdr *)(skb->data); + struct iphdr *ipv4; + struct ipv6hdr *ipv6; struct tcphdr *tcp; + int network_depth = 0; + __be16 proto; + u16 tot_len; u8 l4_hdr_type = get_cqe_l4_hdr_type(cqe); int tcp_ack = ((CQE_L4_HDR_TYPE_TCP_ACK_NO_DATA == l4_hdr_type) || (CQE_L4_HDR_TYPE_TCP_ACK_AND_DATA == l4_hdr_type)); - u16 tot_len = cqe_bcnt - ETH_HLEN; + skb->mac_len = ETH_HLEN; + proto = __vlan_get_protocol(skb, eth->h_proto, &network_depth); - if (eth->h_proto == htons(ETH_P_IP)) { - tcp = (struct tcphdr *)(skb->data + ETH_HLEN + + ipv4 = (struct iphdr *)(skb->data + network_depth); + ipv6 = (struct ipv6hdr *)(skb->data + network_depth); + tot_len = cqe_bcnt - network_depth; + + if (proto == htons(ETH_P_IP)) { + tcp = (struct tcphdr *)(skb->data + network_depth + sizeof(struct iphdr)); ipv6 = NULL; skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; } else { - tcp = (struct tcphdr *)(skb->data + ETH_HLEN + + tcp = (struct tcphdr *)(skb->data + network_depth + sizeof(struct ipv6hdr)); ipv4 = NULL; skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; -- cgit v0.10.2 From db7196a0d0984b933ccf2cd6a60e26abf466e8a3 Mon Sep 17 00:00:00 2001 From: Artem Germanov Date: Wed, 7 Sep 2016 10:49:36 -0700 Subject: tcp: cwnd does not increase in TCP YeAH Commit 76174004a0f19785a328f40388e87e982bbf69b9 (tcp: do not slow start when cwnd equals ssthresh ) introduced regression in TCP YeAH. Using 100ms delay 1% loss virtual ethernet link kernel 4.2 shows bandwidth ~500KB/s for single TCP connection and kernel 4.3 and above (including 4.8-rc4) shows bandwidth ~100KB/s. That is caused by stalled cwnd when cwnd equals ssthresh. This patch fixes it by proper increasing cwnd in this case. Signed-off-by: Artem Germanov Acked-by: Dmitry Adamushko Signed-off-by: David S. Miller diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c index 028eb04..9c5fc97 100644 --- a/net/ipv4/tcp_yeah.c +++ b/net/ipv4/tcp_yeah.c @@ -76,7 +76,7 @@ static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, u32 acked) if (!tcp_is_cwnd_limited(sk)) return; - if (tp->snd_cwnd <= tp->snd_ssthresh) + if (tcp_in_slow_start(tp)) tcp_slow_start(tp, acked); else if (!yeah->doing_reno_now) { -- cgit v0.10.2 From 312fada1f9f87fb55ace4b5a55a70a9eea5100fd Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 7 Sep 2016 19:45:35 +0100 Subject: nfp: remove linux/version.h includes Remove unnecessary version.h includes. Signed-off-by: Jakub Kicinski Reviewed-by: Simon Horman Reviewed-by: Dinan Gunawardena Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 88678c1..e4fe0f0 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -41,7 +41,6 @@ * Chris Telfer */ -#include #include #include #include diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c index 7d7933d..4c98972 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c @@ -40,7 +40,6 @@ * Brad Petrus */ -#include #include #include #include diff --git a/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c b/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c index 37abef0..6f22b0e 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c @@ -38,7 +38,6 @@ * Rolf Neugebauer */ -#include #include #include #include -- cgit v0.10.2 From 313b345cbff566340022c82267a377e1e493ef90 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 7 Sep 2016 19:45:36 +0100 Subject: nfp: drop support for old firmware ABIs Be more strict about FW versions. Drop support for old transitional revisions which were never used in production. Dropping support for FW ABI version 0.0.0.0 is particularly useful because 0 could just be uninitialized memory. Signed-off-by: Jakub Kicinski Reviewed-by: Dinan Gunawardena Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c b/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c index 6f22b0e..f7062cb 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c @@ -133,7 +133,7 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev, } nfp_net_get_fw_version(&fw_ver, ctrl_bar); - if (fw_ver.class != NFP_NET_CFG_VERSION_CLASS_GENERIC) { + if (fw_ver.resv || fw_ver.class != NFP_NET_CFG_VERSION_CLASS_GENERIC) { dev_err(&pdev->dev, "Unknown Firmware ABI %d.%d.%d.%d\n", fw_ver.resv, fw_ver.class, fw_ver.major, fw_ver.minor); err = -EINVAL; @@ -141,9 +141,7 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev, } /* Determine stride */ - if (nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 0) || - nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 1) || - nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0x12, 0x48)) { + if (nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 1)) { stride = 2; tx_bar_no = NFP_NET_Q0_BAR; rx_bar_no = NFP_NET_Q1_BAR; -- cgit v0.10.2 From ebecefc820ec791a216382a68b937577bb69d3f7 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 7 Sep 2016 19:45:37 +0100 Subject: nfp: don't pad frames on receive There is no need to pad frames to ETH_ZLEN on RX. Signed-off-by: Jakub Kicinski Reviewed-by: Simon Horman Reviewed-by: Dinan Gunawardena Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index e4fe0f0..252e492 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -1440,10 +1440,6 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget) nfp_net_set_hash(nn->netdev, skb, rxd); - /* Pad small frames to minimum */ - if (skb_put_padto(skb, 60)) - break; - /* Stats update */ u64_stats_update_begin(&r_vec->rx_sync); r_vec->rx_pkts++; -- cgit v0.10.2 From 6f3c4fb6d05e63c9c6d8968302491c3a5457be61 Mon Sep 17 00:00:00 2001 From: Clemens Gruber Date: Mon, 5 Sep 2016 19:29:58 +0200 Subject: usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase Problems with the signal integrity of the high speed USB data lines or noise on reference ground lines can cause the i.MX6 USB controller to violate USB specs and exhibit unexpected behavior. It was observed that USBi_UI interrupts were triggered first and when isr_setup_status_phase was called, ci->status was NULL, which lead to a NULL pointer dereference kernel panic. This patch fixes the kernel panic, emits a warning once and returns -EPIPE to halt the device and let the host get stalled. It also adds a comment to point people, who are experiencing this issue, to their USB hardware design. Cc: #4.1+ Signed-off-by: Clemens Gruber Signed-off-by: Peter Chen diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index dfec5a1..b933568 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -949,6 +949,15 @@ static int isr_setup_status_phase(struct ci_hdrc *ci) int retval; struct ci_hw_ep *hwep; + /* + * Unexpected USB controller behavior, caused by bad signal integrity + * or ground reference problems, can lead to isr_setup_status_phase + * being called with ci->status equal to NULL. + * If this situation occurs, you should review your USB hardware design. + */ + if (WARN_ON_ONCE(!ci->status)) + return -EPIPE; + hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in; ci->status->context = ci; ci->status->complete = isr_setup_status_complete; -- cgit v0.10.2 From 293f293637b55db4f9f522a5a72514e98a541076 Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Thu, 8 Sep 2016 16:25:49 +0100 Subject: kvm-arm: Unmap shadow pagetables properly On arm/arm64, we depend on the kvm_unmap_hva* callbacks (via mmu_notifiers::invalidate_*) to unmap the stage2 pagetables when the userspace buffer gets unmapped. However, when the Hypervisor process exits without explicit unmap of the guest buffers, the only notifier we get is kvm_arch_flush_shadow_all() (via mmu_notifier::release ) which does nothing on arm. Later this causes us to access pages that were already released [via exit_mmap() -> unmap_vmas()] when we actually get to unmap the stage2 pagetable [via kvm_arch_destroy_vm() -> kvm_free_stage2_pgd()]. This triggers crashes with CONFIG_DEBUG_PAGEALLOC, which unmaps any free'd pages from the linear map. [ 757.644120] Unable to handle kernel paging request at virtual address ffff800661e00000 [ 757.652046] pgd = ffff20000b1a2000 [ 757.655471] [ffff800661e00000] *pgd=00000047fffe3003, *pud=00000047fcd8c003, *pmd=00000047fcc7c003, *pte=00e8004661e00712 [ 757.666492] Internal error: Oops: 96000147 [#3] PREEMPT SMP [ 757.672041] Modules linked in: [ 757.675100] CPU: 7 PID: 3630 Comm: qemu-system-aar Tainted: G D 4.8.0-rc1 #3 [ 757.683240] Hardware name: AppliedMicro X-Gene Mustang Board/X-Gene Mustang Board, BIOS 3.06.15 Aug 19 2016 [ 757.692938] task: ffff80069cdd3580 task.stack: ffff8006adb7c000 [ 757.698840] PC is at __flush_dcache_area+0x1c/0x40 [ 757.703613] LR is at kvm_flush_dcache_pmd+0x60/0x70 [ 757.708469] pc : [] lr : [] pstate: 20000145 ... [ 758.357249] [] __flush_dcache_area+0x1c/0x40 [ 758.363059] [] unmap_stage2_range+0x458/0x5f0 [ 758.368954] [] kvm_free_stage2_pgd+0x34/0x60 [ 758.374761] [] kvm_arch_destroy_vm+0x20/0x68 [ 758.380570] [] kvm_put_kvm+0x210/0x358 [ 758.385860] [] kvm_vm_release+0x2c/0x40 [ 758.391239] [] __fput+0x114/0x2e8 [ 758.396096] [] ____fput+0xc/0x18 [ 758.400869] [] task_work_run+0x108/0x138 [ 758.406332] [] do_exit+0x48c/0x10e8 [ 758.411363] [] do_group_exit+0x6c/0x130 [ 758.416739] [] get_signal+0x284/0xa18 [ 758.421943] [] do_signal+0x158/0x860 [ 758.427060] [] do_notify_resume+0x6c/0x88 [ 758.432608] [] work_pending+0x10/0x14 [ 758.437812] Code: 9ac32042 8b010001 d1000443 8a230000 (d50b7e20) This patch fixes the issue by moving the kvm_free_stage2_pgd() to kvm_arch_flush_shadow_all(). Cc: # 3.9+ Tested-by: Itaru Kitayama Reported-by: Itaru Kitayama Reported-by: James Morse Cc: Marc Zyngier Cc: Catalin Marinas Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose Signed-off-by: Christoffer Dall diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 75f130e..c94b90d 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -158,8 +158,6 @@ void kvm_arch_destroy_vm(struct kvm *kvm) { int i; - kvm_free_stage2_pgd(kvm); - for (i = 0; i < KVM_MAX_VCPUS; ++i) { if (kvm->vcpus[i]) { kvm_arch_vcpu_free(kvm->vcpus[i]); diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index a3faafe..e9a5c0e 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -1894,6 +1894,7 @@ void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) void kvm_arch_flush_shadow_all(struct kvm *kvm) { + kvm_free_stage2_pgd(kvm); } void kvm_arch_flush_shadow_memslot(struct kvm *kvm, -- cgit v0.10.2 From 872c63fbf9e153146b07f0cece4da0d70b283eeb Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 5 Sep 2016 11:56:05 +0100 Subject: arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb() smp_mb__before_spinlock() is intended to upgrade a spin_lock() operation to a full barrier, such that prior stores are ordered with respect to loads and stores occuring inside the critical section. Unfortunately, the core code defines the barrier as smp_wmb(), which is insufficient to provide the required ordering guarantees when used in conjunction with our load-acquire-based spinlock implementation. This patch overrides the arm64 definition of smp_mb__before_spinlock() to map to a full smp_mb(). Cc: Cc: Peter Zijlstra Reported-by: Alan Stern Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas diff --git a/arch/arm64/include/asm/spinlock.h b/arch/arm64/include/asm/spinlock.h index e875a5a..89206b5 100644 --- a/arch/arm64/include/asm/spinlock.h +++ b/arch/arm64/include/asm/spinlock.h @@ -363,4 +363,14 @@ static inline int arch_read_trylock(arch_rwlock_t *rw) #define arch_read_relax(lock) cpu_relax() #define arch_write_relax(lock) cpu_relax() +/* + * Accesses appearing in program order before a spin_lock() operation + * can be reordered with accesses inside the critical section, by virtue + * of arch_spin_lock being constructed using acquire semantics. + * + * In cases where this is problematic (e.g. try_to_wake_up), an + * smp_mb__before_spinlock() can restore the required ordering. + */ +#define smp_mb__before_spinlock() smp_mb() + #endif /* __ASM_SPINLOCK_H */ -- cgit v0.10.2 From 2b9743441a312e0b0a2d87deae363eccbe9d0f00 Mon Sep 17 00:00:00 2001 From: Chunyan Zhang Date: Thu, 8 Sep 2016 20:46:42 +0800 Subject: arm64: use preempt_disable_notrace in _percpu_read/write When debug preempt or preempt tracer is enabled, preempt_count_add/sub() can be traced by function and function graph tracing, and preempt_disable/enable() would call preempt_count_add/sub(), so in Ftrace subsystem we should use preempt_disable/enable_notrace instead. In the commit 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap like events do") the function this_cpu_read() was added to trace_graph_entry(), and if this_cpu_read() calls preempt_disable(), graph tracer will go into a recursive loop, even if the tracing_on is disabled. So this patch change to use preempt_enable/disable_notrace instead in this_cpu_read(). Since Yonghui Yang helped a lot to find the root cause of this problem, so also add his SOB. Signed-off-by: Yonghui Yang Signed-off-by: Chunyan Zhang Acked-by: Will Deacon Signed-off-by: Catalin Marinas diff --git a/arch/arm64/include/asm/percpu.h b/arch/arm64/include/asm/percpu.h index 0a456be..2fee2f5 100644 --- a/arch/arm64/include/asm/percpu.h +++ b/arch/arm64/include/asm/percpu.h @@ -199,19 +199,19 @@ static inline unsigned long __percpu_xchg(void *ptr, unsigned long val, #define _percpu_read(pcp) \ ({ \ typeof(pcp) __retval; \ - preempt_disable(); \ + preempt_disable_notrace(); \ __retval = (typeof(pcp))__percpu_read(raw_cpu_ptr(&(pcp)), \ sizeof(pcp)); \ - preempt_enable(); \ + preempt_enable_notrace(); \ __retval; \ }) #define _percpu_write(pcp, val) \ do { \ - preempt_disable(); \ + preempt_disable_notrace(); \ __percpu_write(raw_cpu_ptr(&(pcp)), (unsigned long)(val), \ sizeof(pcp)); \ - preempt_enable(); \ + preempt_enable_notrace(); \ } while(0) \ #define _pcp_protect(operation, pcp, val) \ -- cgit v0.10.2 From c94455558337eece474eebb6a16b905f98930418 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Thu, 8 Sep 2016 10:43:58 -0700 Subject: raid5: fix a small race condition commit 5f9d1fde7d54a5(raid5: fix memory leak of bio integrity data) moves bio_reset to bio_endio. But it introduces a small race condition. It does bio_reset after raid5_release_stripe, which could make the stripe reusable and hence reuse the bio just before bio_reset. Moving bio_reset before raid5_release_stripe is called should fix the race. Reported-and-tested-by: Stefan Priebe - Profihost AG Signed-off-by: Shaohua Li diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index b95c54c..ee7fc37 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2423,10 +2423,10 @@ static void raid5_end_read_request(struct bio * bi) } } rdev_dec_pending(rdev, conf->mddev); + bio_reset(bi); clear_bit(R5_LOCKED, &sh->dev[i].flags); set_bit(STRIPE_HANDLE, &sh->state); raid5_release_stripe(sh); - bio_reset(bi); } static void raid5_end_write_request(struct bio *bi) @@ -2498,6 +2498,7 @@ static void raid5_end_write_request(struct bio *bi) if (sh->batch_head && bi->bi_error && !replacement) set_bit(STRIPE_BATCH_ERR, &sh->batch_head->state); + bio_reset(bi); if (!test_and_clear_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags)) clear_bit(R5_LOCKED, &sh->dev[i].flags); set_bit(STRIPE_HANDLE, &sh->state); @@ -2505,7 +2506,6 @@ static void raid5_end_write_request(struct bio *bi) if (sh->batch_head && sh != sh->batch_head) raid5_release_stripe(sh->batch_head); - bio_reset(bi); } static void raid5_build_block(struct stripe_head *sh, int i, int previous) -- cgit v0.10.2 From af7c1beccfd98bad752644dc14ea93805d65b2c9 Mon Sep 17 00:00:00 2001 From: Baoyou Xie Date: Thu, 1 Sep 2016 19:02:57 +0800 Subject: virtio: mark vring_dma_dev() static We get 1 warning when building kernel with W=1: drivers/virtio/virtio_ring.c:170:16: warning: no previous prototype for 'vring_dma_dev' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. so this patch marks this function with 'static'. Signed-off-by: Baoyou Xie Acked-by: Arnd Bergmann Signed-off-by: Michael S. Tsirkin diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index e383ecd..ed9c9ee 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -167,7 +167,7 @@ static bool vring_use_dma_api(struct virtio_device *vdev) * making all of the arch DMA ops work on the vring device itself * is a mess. For now, we use the parent device for DMA ops. */ -struct device *vring_dma_dev(const struct vring_virtqueue *vq) +static struct device *vring_dma_dev(const struct vring_virtqueue *vq) { return vq->vq.vdev->dev.parent; } -- cgit v0.10.2 From 5e59d9a1aed26abcc79abe78af5cfd34e53cbe7f Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Tue, 30 Aug 2016 08:04:15 -0700 Subject: virtio_console: Stop doing DMA on the stack virtio_console uses a small DMA buffer for control requests. Move that buffer into heap memory. Doing virtio DMA on the stack is normally okay on non-DMA-API virtio systems (which is currently most of them), but it breaks completely if the stack is virtually mapped. Tested by typing both directions using picocom aimed at /dev/hvc0. Signed-off-by: Andy Lutomirski Signed-off-by: Michael S. Tsirkin Reviewed-by: Amit Shah diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index d2406fe..5da47e26 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -165,6 +165,12 @@ struct ports_device { */ struct virtqueue *c_ivq, *c_ovq; + /* + * A control packet buffer for guest->host requests, protected + * by c_ovq_lock. + */ + struct virtio_console_control cpkt; + /* Array of per-port IO virtqueues */ struct virtqueue **in_vqs, **out_vqs; @@ -560,28 +566,29 @@ static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id, unsigned int event, unsigned int value) { struct scatterlist sg[1]; - struct virtio_console_control cpkt; struct virtqueue *vq; unsigned int len; if (!use_multiport(portdev)) return 0; - cpkt.id = cpu_to_virtio32(portdev->vdev, port_id); - cpkt.event = cpu_to_virtio16(portdev->vdev, event); - cpkt.value = cpu_to_virtio16(portdev->vdev, value); - vq = portdev->c_ovq; - sg_init_one(sg, &cpkt, sizeof(cpkt)); - spin_lock(&portdev->c_ovq_lock); - if (virtqueue_add_outbuf(vq, sg, 1, &cpkt, GFP_ATOMIC) == 0) { + + portdev->cpkt.id = cpu_to_virtio32(portdev->vdev, port_id); + portdev->cpkt.event = cpu_to_virtio16(portdev->vdev, event); + portdev->cpkt.value = cpu_to_virtio16(portdev->vdev, value); + + sg_init_one(sg, &portdev->cpkt, sizeof(struct virtio_console_control)); + + if (virtqueue_add_outbuf(vq, sg, 1, &portdev->cpkt, GFP_ATOMIC) == 0) { virtqueue_kick(vq); while (!virtqueue_get_buf(vq, &len) && !virtqueue_is_broken(vq)) cpu_relax(); } + spin_unlock(&portdev->c_ovq_lock); return 0; } -- cgit v0.10.2 From 7d762e49c2117d3829eb3355f2617aea080ed3a7 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 9 Sep 2016 18:08:23 +0200 Subject: perf/x86/amd/uncore: Prevent use after free The resent conversion of the cpu hotplug support in the uncore driver introduced a regression due to the way the callbacks are invoked at initialization time. The old code called the prepare/starting/online function on each online cpu as a block. The new code registers the hotplug callbacks in the core for each state. The core invokes the callbacks at each registration on all online cpus. The code implicitely relied on the prepare/starting/online callbacks being called as combo on a particular cpu, which was not obvious and completely undocumented. The resulting subtle wreckage happens due to the way how the uncore code manages shared data structures for cpus which share an uncore resource in hardware. The sharing is determined in the cpu starting callback, but the prepare callback allocates per cpu data for the upcoming cpu because potential sharing is unknown at this point. If the starting callback finds a online cpu which shares the hardware resource it takes a refcount on the percpu data of that cpu and puts the own data structure into a 'free_at_online' pointer of that shared data structure. The online callback frees that. With the old model this worked because in a starting callback only one non unused structure (the one of the starting cpu) was available. The new code allocates the data structures for all cpus when the prepare callback is registered. Now the starting function iterates through all online cpus and looks for a data structure (skipping its own) which has a matching hardware id. The id member of the data structure is initialized to 0, but the hardware id can be 0 as well. The resulting wreckage is: CPU0 finds a matching id on CPU1, takes a refcount on CPU1 data and puts its own data structure into CPU1s data structure to be freed. CPU1 skips CPU0 because the data structure is its allegedly unsued own. It finds a matching id on CPU2, takes a refcount on CPU1 data and puts its own data structure into CPU2s data structure to be freed. .... Now the online callbacks are invoked. CPU0 has a pointer to CPU1s data and frees the original CPU0 data. So far so good. CPU1 has a pointer to CPU2s data and frees the original CPU1 data, which is still referenced by CPU0 ---> Booom So there are two issues to be solved here: 1) The id field must be initialized at allocation time to a value which cannot be a valid hardware id, i.e. -1 This prevents the above scenario, but now CPU1 and CPU2 both stick their own data structure into the free_at_online pointer of CPU0. So we leak CPU1s data structure. 2) Fix the memory leak described in #1 Instead of having a single pointer, use a hlist to enqueue the superflous data structures which are then freed by the first cpu invoking the online callback. Ideally we should know the sharing _before_ invoking the prepare callback, but that's way beyond the scope of this bug fix. [ tglx: Rewrote changelog ] Fixes: 96b2bd3866a0 ("perf/x86/amd/uncore: Convert to hotplug state machine") Reported-and-tested-by: Eric Sandeen Signed-off-by: Sebastian Andrzej Siewior Cc: Borislav Petkov Link: http://lkml.kernel.org/r/20160909160822.lowgmkdwms2dheyv@linutronix.de Signed-off-by: Thomas Gleixner diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c index e6131d4..65577f0 100644 --- a/arch/x86/events/amd/uncore.c +++ b/arch/x86/events/amd/uncore.c @@ -29,6 +29,8 @@ #define COUNTER_SHIFT 16 +static HLIST_HEAD(uncore_unused_list); + struct amd_uncore { int id; int refcnt; @@ -39,7 +41,7 @@ struct amd_uncore { cpumask_t *active_mask; struct pmu *pmu; struct perf_event *events[MAX_COUNTERS]; - struct amd_uncore *free_when_cpu_online; + struct hlist_node node; }; static struct amd_uncore * __percpu *amd_uncore_nb; @@ -306,6 +308,7 @@ static int amd_uncore_cpu_up_prepare(unsigned int cpu) uncore_nb->msr_base = MSR_F15H_NB_PERF_CTL; uncore_nb->active_mask = &amd_nb_active_mask; uncore_nb->pmu = &amd_nb_pmu; + uncore_nb->id = -1; *per_cpu_ptr(amd_uncore_nb, cpu) = uncore_nb; } @@ -319,6 +322,7 @@ static int amd_uncore_cpu_up_prepare(unsigned int cpu) uncore_l2->msr_base = MSR_F16H_L2I_PERF_CTL; uncore_l2->active_mask = &amd_l2_active_mask; uncore_l2->pmu = &amd_l2_pmu; + uncore_l2->id = -1; *per_cpu_ptr(amd_uncore_l2, cpu) = uncore_l2; } @@ -348,7 +352,7 @@ amd_uncore_find_online_sibling(struct amd_uncore *this, continue; if (this->id == that->id) { - that->free_when_cpu_online = this; + hlist_add_head(&this->node, &uncore_unused_list); this = that; break; } @@ -388,13 +392,23 @@ static int amd_uncore_cpu_starting(unsigned int cpu) return 0; } +static void uncore_clean_online(void) +{ + struct amd_uncore *uncore; + struct hlist_node *n; + + hlist_for_each_entry_safe(uncore, n, &uncore_unused_list, node) { + hlist_del(&uncore->node); + kfree(uncore); + } +} + static void uncore_online(unsigned int cpu, struct amd_uncore * __percpu *uncores) { struct amd_uncore *uncore = *per_cpu_ptr(uncores, cpu); - kfree(uncore->free_when_cpu_online); - uncore->free_when_cpu_online = NULL; + uncore_clean_online(); if (cpu == uncore->cpu) cpumask_set_cpu(cpu, uncore->active_mask); -- cgit v0.10.2 From 2561d309dfd1555e781484af757ed0115035ddb3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 17 Aug 2016 16:02:32 -0400 Subject: alpha: fix copy_from_user() it should clear the destination even when access_ok() fails. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/alpha/include/asm/uaccess.h b/arch/alpha/include/asm/uaccess.h index c419b43..466e42e 100644 --- a/arch/alpha/include/asm/uaccess.h +++ b/arch/alpha/include/asm/uaccess.h @@ -371,14 +371,6 @@ __copy_tofrom_user_nocheck(void *to, const void *from, long len) return __cu_len; } -extern inline long -__copy_tofrom_user(void *to, const void *from, long len, const void __user *validate) -{ - if (__access_ok((unsigned long)validate, len, get_fs())) - len = __copy_tofrom_user_nocheck(to, from, len); - return len; -} - #define __copy_to_user(to, from, n) \ ({ \ __chk_user_ptr(to); \ @@ -393,17 +385,22 @@ __copy_tofrom_user(void *to, const void *from, long len, const void __user *vali #define __copy_to_user_inatomic __copy_to_user #define __copy_from_user_inatomic __copy_from_user - extern inline long copy_to_user(void __user *to, const void *from, long n) { - return __copy_tofrom_user((__force void *)to, from, n, to); + if (likely(__access_ok((unsigned long)to, n, get_fs()))) + n = __copy_tofrom_user_nocheck((__force void *)to, from, n); + return n; } extern inline long copy_from_user(void *to, const void __user *from, long n) { - return __copy_tofrom_user(to, (__force void *)from, n, from); + if (likely(__access_ok((unsigned long)from, n, get_fs()))) + n = __copy_tofrom_user_nocheck(to, (__force void *)from, n); + else + memset(to, 0, n); + return n; } extern void __do_clear_user(void); -- cgit v0.10.2 From 2545e5da080b4839dd859e3b09343a884f6ab0e3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 17 Aug 2016 16:36:37 -0400 Subject: asm-generic: make copy_from_user() zero the destination properly ... in all cases, including the failing access_ok() Note that some architectures using asm-generic/uaccess.h have __copy_from_user() not zeroing the tail on failure halfway through. This variant works either way. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index 1bfa602..04e21a4 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -257,11 +257,13 @@ extern int __get_user_bad(void) __attribute__((noreturn)); static inline long copy_from_user(void *to, const void __user * from, unsigned long n) { + unsigned long res = n; might_fault(); - if (access_ok(VERIFY_READ, from, n)) - return __copy_from_user(to, from, n); - else - return n; + if (likely(access_ok(VERIFY_READ, from, n))) + res = __copy_from_user(to, from, n); + if (unlikely(res)) + memset(to + (n - res), 0, res); + return res; } static inline long copy_to_user(void __user *to, -- cgit v0.10.2 From 40d259045500c6431633f215516c1f94bac8c62f Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 8 Sep 2016 08:16:01 +0200 Subject: mlxsw: spectrum_router: Fix error path in mlxsw_sp_router_init When neigh_init fails, we have to do proper cleanup including router_fini call. Fixes: 6cf3c971dc84cb ("mlxsw: spectrum_router: Add private neigh table") Signed-off-by: Jiri Pirko Acked-by: Ido Schimmel Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 352259b..3f5c51d 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -1517,7 +1517,14 @@ int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) return err; mlxsw_sp_lpm_init(mlxsw_sp); mlxsw_sp_vrs_init(mlxsw_sp); - return mlxsw_sp_neigh_init(mlxsw_sp); + err = mlxsw_sp_neigh_init(mlxsw_sp); + if (err) + goto err_neigh_init; + return 0; + +err_neigh_init: + __mlxsw_sp_router_fini(mlxsw_sp); + return err; } void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) -- cgit v0.10.2 From 3247ff2b318f3eeaaf32163ce39ddaac23e9a6f9 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Thu, 8 Sep 2016 08:16:02 +0200 Subject: mlxsw: spectrum: Set port type before setting its address During port init, we currently set the port's type to Ethernet after setting its MAC address. However, the hardware documentation states this should be the other way around. Align the driver with the hardware documentation and set the port's MAC address after setting its type. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index e16b347..d48873b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2106,6 +2106,13 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port, dev->netdev_ops = &mlxsw_sp_port_netdev_ops; dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops; + err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0); + if (err) { + dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n", + mlxsw_sp_port->local_port); + goto err_port_swid_set; + } + err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port); if (err) { dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n", @@ -2131,13 +2138,6 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port, goto err_port_system_port_mapping_set; } - err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0); - if (err) { - dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n", - mlxsw_sp_port->local_port); - goto err_port_swid_set; - } - err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width); if (err) { dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n", @@ -2219,10 +2219,10 @@ err_port_buffers_init: err_port_admin_status_set: err_port_mtu_set: err_port_speed_by_width_set: - mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT); -err_port_swid_set: err_port_system_port_mapping_set: err_dev_addr_init: + mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT); +err_port_swid_set: free_percpu(mlxsw_sp_port->pcpu_stats); err_alloc_stats: kfree(mlxsw_sp_port->untagged_vlans); -- cgit v0.10.2 From ca120cf688874f4423e579e7cc5ddf7244aeca45 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sat, 3 Sep 2016 10:38:03 -0700 Subject: mm: fix show_smap() for zone_device-pmd ranges Attempting to dump /proc//smaps for a process with pmd dax mappings currently results in the following VM_BUG_ONs: kernel BUG at mm/huge_memory.c:1105! task: ffff88045f16b140 task.stack: ffff88045be14000 RIP: 0010:[] [] follow_trans_huge_pmd+0x2cb/0x340 [..] Call Trace: [] smaps_pte_range+0xa0/0x4b0 [] ? vsnprintf+0x255/0x4c0 [] __walk_page_range+0x1fe/0x4d0 [] walk_page_vma+0x62/0x80 [] show_smap+0xa6/0x2b0 kernel BUG at fs/proc/task_mmu.c:585! RIP: 0010:[] [] smaps_pte_range+0x499/0x4b0 Call Trace: [] ? vsnprintf+0x255/0x4c0 [] __walk_page_range+0x1fe/0x4d0 [] walk_page_vma+0x62/0x80 [] show_smap+0xa6/0x2b0 These locations are sanity checking page flags that must be set for an anonymous transparent huge page, but are not set for the zone_device pages associated with dax mappings. Cc: Ross Zwisler Cc: Kirill A. Shutemov Acked-by: Andrew Morton Signed-off-by: Dan Williams diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 187d84e..f6fa99e 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -581,6 +581,8 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, mss->anonymous_thp += HPAGE_PMD_SIZE; else if (PageSwapBacked(page)) mss->shmem_thp += HPAGE_PMD_SIZE; + else if (is_zone_device_page(page)) + /* pass */; else VM_BUG_ON_PAGE(1, page); smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd)); diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 2db2112..a6abd76 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1078,7 +1078,7 @@ struct page *follow_trans_huge_pmd(struct vm_area_struct *vma, goto out; page = pmd_page(*pmd); - VM_BUG_ON_PAGE(!PageHead(page), page); + VM_BUG_ON_PAGE(!PageHead(page) && !is_zone_device_page(page), page); if (flags & FOLL_TOUCH) touch_pmd(vma, addr, pmd); if ((flags & FOLL_MLOCK) && (vma->vm_flags & VM_LOCKED)) { @@ -1116,7 +1116,7 @@ struct page *follow_trans_huge_pmd(struct vm_area_struct *vma, } skip_mlock: page += (addr & ~HPAGE_PMD_MASK) >> PAGE_SHIFT; - VM_BUG_ON_PAGE(!PageCompound(page), page); + VM_BUG_ON_PAGE(!PageCompound(page) && !is_zone_device_page(page), page); if (flags & FOLL_GET) get_page(page); -- cgit v0.10.2 From 9049771f7d5490a302589976984810064c83ab40 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 7 Sep 2016 08:51:21 -0700 Subject: mm: fix cache mode of dax pmd mappings track_pfn_insert() in vmf_insert_pfn_pmd() is marking dax mappings as uncacheable rendering them impractical for application usage. DAX-pte mappings are cached and the goal of establishing DAX-pmd mappings is to attain more performance, not dramatically less (3 orders of magnitude). track_pfn_insert() relies on a previous call to reserve_memtype() to establish the expected page_cache_mode for the range. While memremap() arranges for reserve_memtype() to be called, devm_memremap_pages() does not. So, teach track_pfn_insert() and untrack_pfn() how to handle tracking without a vma, and arrange for devm_memremap_pages() to establish the write-back-cache reservation in the memtype tree. Cc: Cc: Matthew Wilcox Cc: Ross Zwisler Cc: Nilesh Choudhury Cc: Kirill A. Shutemov Reported-by: Toshi Kani Reported-by: Kai Zhang Acked-by: Andrew Morton Signed-off-by: Dan Williams diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index ecb1b69..170cc4f 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -927,9 +927,10 @@ int track_pfn_copy(struct vm_area_struct *vma) } /* - * prot is passed in as a parameter for the new mapping. If the vma has a - * linear pfn mapping for the entire range reserve the entire vma range with - * single reserve_pfn_range call. + * prot is passed in as a parameter for the new mapping. If the vma has + * a linear pfn mapping for the entire range, or no vma is provided, + * reserve the entire pfn + size range with single reserve_pfn_range + * call. */ int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot, unsigned long pfn, unsigned long addr, unsigned long size) @@ -938,11 +939,12 @@ int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot, enum page_cache_mode pcm; /* reserve the whole chunk starting from paddr */ - if (addr == vma->vm_start && size == (vma->vm_end - vma->vm_start)) { + if (!vma || (addr == vma->vm_start + && size == (vma->vm_end - vma->vm_start))) { int ret; ret = reserve_pfn_range(paddr, size, prot, 0); - if (!ret) + if (ret == 0 && vma) vma->vm_flags |= VM_PAT; return ret; } @@ -997,7 +999,7 @@ void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, resource_size_t paddr; unsigned long prot; - if (!(vma->vm_flags & VM_PAT)) + if (vma && !(vma->vm_flags & VM_PAT)) return; /* free the chunk starting from pfn or the whole chunk */ @@ -1011,7 +1013,8 @@ void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, size = vma->vm_end - vma->vm_start; } free_pfn_range(paddr, size); - vma->vm_flags &= ~VM_PAT; + if (vma) + vma->vm_flags &= ~VM_PAT; } /* diff --git a/kernel/memremap.c b/kernel/memremap.c index 251d16b..b501e39 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -247,6 +247,7 @@ static void devm_memremap_pages_release(struct device *dev, void *data) align_start = res->start & ~(SECTION_SIZE - 1); align_size = ALIGN(resource_size(res), SECTION_SIZE); arch_remove_memory(align_start, align_size); + untrack_pfn(NULL, PHYS_PFN(align_start), align_size); pgmap_radix_release(res); dev_WARN_ONCE(dev, pgmap->altmap && pgmap->altmap->alloc, "%s: failed to free all reserved pages\n", __func__); @@ -282,6 +283,7 @@ void *devm_memremap_pages(struct device *dev, struct resource *res, struct percpu_ref *ref, struct vmem_altmap *altmap) { resource_size_t key, align_start, align_size, align_end; + pgprot_t pgprot = PAGE_KERNEL; struct dev_pagemap *pgmap; struct page_map *page_map; int error, nid, is_ram; @@ -351,6 +353,11 @@ void *devm_memremap_pages(struct device *dev, struct resource *res, if (nid < 0) nid = numa_mem_id(); + error = track_pfn_remap(NULL, &pgprot, PHYS_PFN(align_start), 0, + align_size); + if (error) + goto err_pfn_remap; + error = arch_add_memory(nid, align_start, align_size, true); if (error) goto err_add_memory; @@ -371,6 +378,8 @@ void *devm_memremap_pages(struct device *dev, struct resource *res, return __va(res->start); err_add_memory: + untrack_pfn(NULL, PHYS_PFN(align_start), align_size); + err_pfn_remap: err_radix: pgmap_radix_release(res); devres_free(page_map); -- cgit v0.10.2 From 2e21807d4b131dfd4a8e5c82116a85b62f28aeec Mon Sep 17 00:00:00 2001 From: Vishal Verma Date: Fri, 2 Sep 2016 17:27:30 -0600 Subject: nfit, mce: Fix SPA matching logic in MCE handler The check for a 'pmem' type SPA in the MCE handler was inverted due to a merge/rebase error. Fixes: 6839a6d nfit: do an ARS scrub on hitting a latent media error Cc: linux-acpi@vger.kernel.org Cc: Dan Williams Signed-off-by: Vishal Verma Signed-off-by: Dan Williams diff --git a/drivers/acpi/nfit/mce.c b/drivers/acpi/nfit/mce.c index 4c745bf..161f915 100644 --- a/drivers/acpi/nfit/mce.c +++ b/drivers/acpi/nfit/mce.c @@ -42,7 +42,7 @@ static int nfit_handle_mce(struct notifier_block *nb, unsigned long val, list_for_each_entry(nfit_spa, &acpi_desc->spas, list) { struct acpi_nfit_system_address *spa = nfit_spa->spa; - if (nfit_spa_type(spa) == NFIT_SPA_PM) + if (nfit_spa_type(spa) != NFIT_SPA_PM) continue; /* find the spa that covers the mce addr */ if (spa->address > mce->addr) -- cgit v0.10.2 From 1e8b8d9619f9476e94f32eb20cab000d50d236aa Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Fri, 9 Sep 2016 09:10:08 -0700 Subject: libnvdimm: allow legacy (e820) pmem region to clear bad blocks Bad blocks can be injected via /sys/block/pmemN/badblocks. In a situation where legacy pmem is being used or a pmem region created by using memmap kernel parameter, the injected bad blocks are not cleared due to nvdimm_clear_poison() failing from lack of ndctl function pointer. In this case we need to just return as handled and allow the bad blocks to be cleared rather than fail. Reviewed-by: Vishal Verma Signed-off-by: Dave Jiang Signed-off-by: Dan Williams diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 458daf9..935866f 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -185,8 +185,12 @@ long nvdimm_clear_poison(struct device *dev, phys_addr_t phys, return -ENXIO; nd_desc = nvdimm_bus->nd_desc; + /* + * if ndctl does not exist, it's PMEM_LEGACY and + * we want to just pretend everything is handled. + */ if (!nd_desc->ndctl) - return -ENXIO; + return len; memset(&ars_cap, 0, sizeof(ars_cap)); ars_cap.address = phys; -- cgit v0.10.2 From 7303a1475008bee5c3e82a06a282568415690d72 Mon Sep 17 00:00:00 2001 From: Marcelo Ricardo Leitner Date: Thu, 8 Sep 2016 17:54:11 +0800 Subject: sctp: identify chunks that need to be fragmented at IP level Previously, without GSO, it was easy to identify it: if the chunk didn't fit and there was no data chunk in the packet yet, we could fragment at IP level. So if there was an auth chunk and we were bundling a big data chunk, it would fragment regardless of the size of the auth chunk. This also works for the context of PMTU reductions. But with GSO, we cannot distinguish such PMTU events anymore, as the packet is allowed to exceed PMTU. So we need another check: to ensure that the chunk that we are adding, actually fits the current PMTU. If it doesn't, trigger a flush and let it be fragmented at IP level in the next round. Signed-off-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller diff --git a/net/sctp/output.c b/net/sctp/output.c index 1f1682b..31b7bc3 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -878,7 +878,7 @@ static sctp_xmit_t sctp_packet_will_fit(struct sctp_packet *packet, struct sctp_chunk *chunk, u16 chunk_len) { - size_t psize, pmtu; + size_t psize, pmtu, maxsize; sctp_xmit_t retval = SCTP_XMIT_OK; psize = packet->size; @@ -906,6 +906,17 @@ static sctp_xmit_t sctp_packet_will_fit(struct sctp_packet *packet, goto out; } + /* Similarly, if this chunk was built before a PMTU + * reduction, we have to fragment it at IP level now. So + * if the packet already contains something, we need to + * flush. + */ + maxsize = pmtu - packet->overhead; + if (packet->auth) + maxsize -= WORD_ROUND(packet->auth->skb->len); + if (chunk_len > maxsize) + retval = SCTP_XMIT_PMTU_FULL; + /* It is also okay to fragment if the chunk we are * adding is a control chunk, but only if current packet * is not a GSO one otherwise it causes fragmentation of -- cgit v0.10.2 From 47b02f7294a483387772a46931da942b2ca9d845 Mon Sep 17 00:00:00 2001 From: Lars Persson Date: Thu, 8 Sep 2016 13:24:21 +0200 Subject: dwc_eth_qos: do not register semi-initialized device We move register_netdev() to the end of dwceqos_probe() to close any races where the netdev callbacks are called before the initialization has finished. Reported-by: Pavel Andrianov Signed-off-by: Lars Persson Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/synopsys/dwc_eth_qos.c b/drivers/net/ethernet/synopsys/dwc_eth_qos.c index 5a3941b..4490eba 100644 --- a/drivers/net/ethernet/synopsys/dwc_eth_qos.c +++ b/drivers/net/ethernet/synopsys/dwc_eth_qos.c @@ -1246,7 +1246,7 @@ static int dwceqos_mii_init(struct net_local *lp) lp->mii_bus->read = &dwceqos_mdio_read; lp->mii_bus->write = &dwceqos_mdio_write; lp->mii_bus->priv = lp; - lp->mii_bus->parent = &lp->ndev->dev; + lp->mii_bus->parent = &lp->pdev->dev; of_address_to_resource(lp->pdev->dev.of_node, 0, &res); snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%.8llx", @@ -2853,25 +2853,17 @@ static int dwceqos_probe(struct platform_device *pdev) ndev->features = ndev->hw_features; - netif_napi_add(ndev, &lp->napi, dwceqos_rx_poll, NAPI_POLL_WEIGHT); - - ret = register_netdev(ndev); - if (ret) { - dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); - goto err_out_clk_dis_aper; - } - lp->phy_ref_clk = devm_clk_get(&pdev->dev, "phy_ref_clk"); if (IS_ERR(lp->phy_ref_clk)) { dev_err(&pdev->dev, "phy_ref_clk clock not found.\n"); ret = PTR_ERR(lp->phy_ref_clk); - goto err_out_unregister_netdev; + goto err_out_clk_dis_aper; } ret = clk_prepare_enable(lp->phy_ref_clk); if (ret) { dev_err(&pdev->dev, "Unable to enable device clock.\n"); - goto err_out_unregister_netdev; + goto err_out_clk_dis_aper; } lp->phy_node = of_parse_phandle(lp->pdev->dev.of_node, @@ -2880,7 +2872,7 @@ static int dwceqos_probe(struct platform_device *pdev) ret = of_phy_register_fixed_link(lp->pdev->dev.of_node); if (ret < 0) { dev_err(&pdev->dev, "invalid fixed-link"); - goto err_out_unregister_clk_notifier; + goto err_out_clk_dis_phy; } lp->phy_node = of_node_get(lp->pdev->dev.of_node); @@ -2889,7 +2881,7 @@ static int dwceqos_probe(struct platform_device *pdev) ret = of_get_phy_mode(lp->pdev->dev.of_node); if (ret < 0) { dev_err(&lp->pdev->dev, "error in getting phy i/f\n"); - goto err_out_unregister_clk_notifier; + goto err_out_clk_dis_phy; } lp->phy_interface = ret; @@ -2897,14 +2889,14 @@ static int dwceqos_probe(struct platform_device *pdev) ret = dwceqos_mii_init(lp); if (ret) { dev_err(&lp->pdev->dev, "error in dwceqos_mii_init\n"); - goto err_out_unregister_clk_notifier; + goto err_out_clk_dis_phy; } ret = dwceqos_mii_probe(ndev); if (ret != 0) { netdev_err(ndev, "mii_probe fail.\n"); ret = -ENXIO; - goto err_out_unregister_clk_notifier; + goto err_out_clk_dis_phy; } dwceqos_set_umac_addr(lp, lp->ndev->dev_addr, 0); @@ -2922,7 +2914,7 @@ static int dwceqos_probe(struct platform_device *pdev) if (ret) { dev_err(&lp->pdev->dev, "Unable to retrieve DT, error %d\n", ret); - goto err_out_unregister_clk_notifier; + goto err_out_clk_dis_phy; } dev_info(&lp->pdev->dev, "pdev->id %d, baseaddr 0x%08lx, irq %d\n", pdev->id, ndev->base_addr, ndev->irq); @@ -2932,18 +2924,24 @@ static int dwceqos_probe(struct platform_device *pdev) if (ret) { dev_err(&lp->pdev->dev, "Unable to request IRQ %d, error %d\n", ndev->irq, ret); - goto err_out_unregister_clk_notifier; + goto err_out_clk_dis_phy; } if (netif_msg_probe(lp)) netdev_dbg(ndev, "net_local@%p\n", lp); + netif_napi_add(ndev, &lp->napi, dwceqos_rx_poll, NAPI_POLL_WEIGHT); + + ret = register_netdev(ndev); + if (ret) { + dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); + goto err_out_clk_dis_phy; + } + return 0; -err_out_unregister_clk_notifier: +err_out_clk_dis_phy: clk_disable_unprepare(lp->phy_ref_clk); -err_out_unregister_netdev: - unregister_netdev(ndev); err_out_clk_dis_aper: clk_disable_unprepare(lp->apb_pclk); err_out_free_netdev: -- cgit v0.10.2 From c2f57fb97da5730509a50e316f353d3da17f6c25 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 8 Sep 2016 16:25:15 +0200 Subject: drivers: net: phy: mdio-xgene: Add hardware dependency The mdio-xgene driver is only useful on X-Gene SoC. Signed-off-by: Jean Delvare Cc: Iyappan Subramanian Cc: David S. Miller Acked-by: Iyappan Subramanian Signed-off-by: David S. Miller diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 47a6434..b4863e4 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -303,6 +303,7 @@ config MDIO_HISI_FEMAC config MDIO_XGENE tristate "APM X-Gene SoC MDIO bus controller" + depends on ARCH_XGENE || COMPILE_TEST help This module provides a driver for the MDIO busses found in the APM X-Gene SoC's. -- cgit v0.10.2 From 163ae1c6ad6299b19e22b4a35d5ab24a89791a98 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Thu, 8 Sep 2016 10:57:08 -0700 Subject: fscrypto: add authorization check for setting encryption policy On an ext4 or f2fs filesystem with file encryption supported, a user could set an encryption policy on any empty directory(*) to which they had readonly access. This is obviously problematic, since such a directory might be owned by another user and the new encryption policy would prevent that other user from creating files in their own directory (for example). Fix this by requiring inode_owner_or_capable() permission to set an encryption policy. This means that either the caller must own the file, or the caller must have the capability CAP_FOWNER. (*) Or also on any regular file, for f2fs v4.6 and later and ext4 v4.8-rc1 and later; a separate bug fix is coming for that. Signed-off-by: Eric Biggers Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs} Signed-off-by: Theodore Ts'o diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index 0f9961e..c9800b1 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -95,6 +95,9 @@ static int create_encryption_context_from_policy(struct inode *inode, int fscrypt_process_policy(struct inode *inode, const struct fscrypt_policy *policy) { + if (!inode_owner_or_capable(inode)) + return -EACCES; + if (policy->version != 0) return -EINVAL; -- cgit v0.10.2 From 002ced4be6429918800ce3e41d5cbc2d7c01822c Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Thu, 8 Sep 2016 11:36:39 -0700 Subject: fscrypto: only allow setting encryption policy on directories The FS_IOC_SET_ENCRYPTION_POLICY ioctl allowed setting an encryption policy on nondirectory files. This was unintentional, and in the case of nonempty regular files did not behave as expected because existing data was not actually encrypted by the ioctl. In the case of ext4, the user could also trigger filesystem errors in ->empty_dir(), e.g. due to mismatched "directory" checksums when the kernel incorrectly tried to interpret a regular file as a directory. This bug affected ext4 with kernels v4.8-rc1 or later and f2fs with kernels v4.6 and later. It appears that older kernels only permitted directories and that the check was accidentally lost during the refactoring to share the file encryption code between ext4 and f2fs. This patch restores the !S_ISDIR() check that was present in older kernels. Signed-off-by: Eric Biggers Cc: stable@vger.kernel.org Signed-off-by: Theodore Ts'o diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index c9800b1..f96547f 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -102,6 +102,8 @@ int fscrypt_process_policy(struct inode *inode, return -EINVAL; if (!inode_has_encryption_context(inode)) { + if (!S_ISDIR(inode->i_mode)) + return -EINVAL; if (!inode->i_sb->s_cop->empty_dir) return -EOPNOTSUPP; if (!inode->i_sb->s_cop->empty_dir(inode)) -- cgit v0.10.2 From ba63f23d69a3a10e7e527a02702023da68ef8a6d Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Thu, 8 Sep 2016 14:20:38 -0700 Subject: fscrypto: require write access to mount to set encryption policy Since setting an encryption policy requires writing metadata to the filesystem, it should be guarded by mnt_want_write/mnt_drop_write. Otherwise, a user could cause a write to a frozen or readonly filesystem. This was handled correctly by f2fs but not by ext4. Make fscrypt_process_policy() handle it rather than relying on the filesystem to get it right. Signed-off-by: Eric Biggers Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs} Signed-off-by: Theodore Ts'o Acked-by: Jaegeuk Kim diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index f96547f..ed115ac 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -11,6 +11,7 @@ #include #include #include +#include static int inode_has_encryption_context(struct inode *inode) { @@ -92,31 +93,42 @@ static int create_encryption_context_from_policy(struct inode *inode, return inode->i_sb->s_cop->set_context(inode, &ctx, sizeof(ctx), NULL); } -int fscrypt_process_policy(struct inode *inode, +int fscrypt_process_policy(struct file *filp, const struct fscrypt_policy *policy) { + struct inode *inode = file_inode(filp); + int ret; + if (!inode_owner_or_capable(inode)) return -EACCES; if (policy->version != 0) return -EINVAL; + ret = mnt_want_write_file(filp); + if (ret) + return ret; + if (!inode_has_encryption_context(inode)) { if (!S_ISDIR(inode->i_mode)) - return -EINVAL; - if (!inode->i_sb->s_cop->empty_dir) - return -EOPNOTSUPP; - if (!inode->i_sb->s_cop->empty_dir(inode)) - return -ENOTEMPTY; - return create_encryption_context_from_policy(inode, policy); + ret = -EINVAL; + else if (!inode->i_sb->s_cop->empty_dir) + ret = -EOPNOTSUPP; + else if (!inode->i_sb->s_cop->empty_dir(inode)) + ret = -ENOTEMPTY; + else + ret = create_encryption_context_from_policy(inode, + policy); + } else if (!is_encryption_context_consistent_with_policy(inode, + policy)) { + printk(KERN_WARNING + "%s: Policy inconsistent with encryption context\n", + __func__); + ret = -EINVAL; } - if (is_encryption_context_consistent_with_policy(inode, policy)) - return 0; - - printk(KERN_WARNING "%s: Policy inconsistent with encryption context\n", - __func__); - return -EINVAL; + mnt_drop_write_file(filp); + return ret; } EXPORT_SYMBOL(fscrypt_process_policy); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 10686fd..1bb7df5 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -776,7 +776,7 @@ resizefs_out: (struct fscrypt_policy __user *)arg, sizeof(policy))) return -EFAULT; - return fscrypt_process_policy(inode, &policy); + return fscrypt_process_policy(filp, &policy); #else return -EOPNOTSUPP; #endif diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 47abb96..28f4f4c 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1757,21 +1757,14 @@ static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) { struct fscrypt_policy policy; struct inode *inode = file_inode(filp); - int ret; if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, sizeof(policy))) return -EFAULT; - ret = mnt_want_write_file(filp); - if (ret) - return ret; - f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); - ret = fscrypt_process_policy(inode, &policy); - mnt_drop_write_file(filp); - return ret; + return fscrypt_process_policy(filp, &policy); } static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) diff --git a/include/linux/fscrypto.h b/include/linux/fscrypto.h index cfa6cde..76cff18 100644 --- a/include/linux/fscrypto.h +++ b/include/linux/fscrypto.h @@ -274,8 +274,7 @@ extern void fscrypt_restore_control_page(struct page *); extern int fscrypt_zeroout_range(struct inode *, pgoff_t, sector_t, unsigned int); /* policy.c */ -extern int fscrypt_process_policy(struct inode *, - const struct fscrypt_policy *); +extern int fscrypt_process_policy(struct file *, const struct fscrypt_policy *); extern int fscrypt_get_policy(struct inode *, struct fscrypt_policy *); extern int fscrypt_has_permitted_context(struct inode *, struct inode *); extern int fscrypt_inherit_context(struct inode *, struct inode *, @@ -345,7 +344,7 @@ static inline int fscrypt_notsupp_zeroout_range(struct inode *i, pgoff_t p, } /* policy.c */ -static inline int fscrypt_notsupp_process_policy(struct inode *i, +static inline int fscrypt_notsupp_process_policy(struct file *f, const struct fscrypt_policy *p) { return -EOPNOTSUPP; -- cgit v0.10.2 From 767ae08678c2c796bcd7f582ee457aee20a28a1e Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 6 Sep 2016 16:23:49 +0300 Subject: perf/core: Fix a race between mmap_close() and set_output() of AUX events In the mmap_close() path we need to stop all the AUX events that are writing data to the AUX area that we are unmapping, before we can safely free the pages. To determine if an event needs to be stopped, we're comparing its ->rb against the one that's getting unmapped. However, a SET_OUTPUT ioctl may turn up inside an AUX transaction and swizzle event::rb to some other ring buffer, but the transaction will keep writing data to the old ring buffer until the event gets scheduled out. At this point, mmap_close() will skip over such an event and will proceed to free the AUX area, while it's still being used by this event, which will set off a warning in the mmap_close() path and cause a memory corruption. To avoid this, always stop an AUX event before its ->rb is updated; this will release the (potentially) last reference on the AUX area of the buffer. If the event gets restarted, its new ring buffer will be used. If another SET_OUTPUT comes and switches it back to the old ring buffer that's getting unmapped, it's also fine: this ring buffer's aux_mmap_count will be zero and AUX transactions won't start any more. Reported-by: Vince Weaver Signed-off-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: vince@deater.net Link: http://lkml.kernel.org/r/20160906132353.19887-2-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar diff --git a/kernel/events/core.c b/kernel/events/core.c index 07ac859..a54f2c2 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -2496,11 +2496,11 @@ static int __perf_event_stop(void *info) return 0; } -static int perf_event_restart(struct perf_event *event) +static int perf_event_stop(struct perf_event *event, int restart) { struct stop_event_data sd = { .event = event, - .restart = 1, + .restart = restart, }; int ret = 0; @@ -4845,6 +4845,19 @@ static void ring_buffer_attach(struct perf_event *event, spin_unlock_irqrestore(&rb->event_lock, flags); } + /* + * Avoid racing with perf_mmap_close(AUX): stop the event + * before swizzling the event::rb pointer; if it's getting + * unmapped, its aux_mmap_count will be 0 and it won't + * restart. See the comment in __perf_pmu_output_stop(). + * + * Data will inevitably be lost when set_output is done in + * mid-air, but then again, whoever does it like this is + * not in for the data anyway. + */ + if (has_aux(event)) + perf_event_stop(event, 0); + rcu_assign_pointer(event->rb, rb); if (old_rb) { @@ -6120,7 +6133,7 @@ static void perf_event_addr_filters_exec(struct perf_event *event, void *data) raw_spin_unlock_irqrestore(&ifh->lock, flags); if (restart) - perf_event_restart(event); + perf_event_stop(event, 1); } void perf_event_exec(void) @@ -6164,7 +6177,13 @@ static void __perf_event_output_stop(struct perf_event *event, void *data) /* * In case of inheritance, it will be the parent that links to the - * ring-buffer, but it will be the child that's actually using it: + * ring-buffer, but it will be the child that's actually using it. + * + * We are using event::rb to determine if the event should be stopped, + * however this may race with ring_buffer_attach() (through set_output), + * which will make us skip the event that actually needs to be stopped. + * So ring_buffer_attach() has to stop an aux event before re-assigning + * its rb pointer. */ if (rcu_dereference(parent->rb) == rb) ro->err = __perf_event_stop(&sd); @@ -6678,7 +6697,7 @@ static void __perf_addr_filters_adjust(struct perf_event *event, void *data) raw_spin_unlock_irqrestore(&ifh->lock, flags); if (restart) - perf_event_restart(event); + perf_event_stop(event, 1); } /* @@ -7867,7 +7886,7 @@ static void perf_event_addr_filters_apply(struct perf_event *event) mmput(mm); restart: - perf_event_restart(event); + perf_event_stop(event, 1); } /* -- cgit v0.10.2 From b79ccadd6bb10e72cf784a298ca6dc1398eb9a24 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 6 Sep 2016 16:23:50 +0300 Subject: perf/core: Fix aux_mmap_count vs aux_refcount order The order of accesses to ring buffer's aux_mmap_count and aux_refcount has to be preserved across the users, namely perf_mmap_close() and perf_aux_output_begin(), otherwise the inversion can result in the latter holding the last reference to the aux buffer and subsequently free'ing it in atomic context, triggering a warning. > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 257 at kernel/events/ring_buffer.c:541 __rb_free_aux+0x11a/0x130 > CPU: 0 PID: 257 Comm: stopbug Not tainted 4.8.0-rc1+ #2596 > Call Trace: > [] __warn+0xcb/0xf0 > [] warn_slowpath_null+0x1d/0x20 > [] __rb_free_aux+0x11a/0x130 > [] rb_free_aux+0x18/0x20 > [] perf_aux_output_begin+0x163/0x1e0 > [] bts_event_start+0x3a/0xd0 > [] bts_event_add+0x5d/0x80 > [] event_sched_in.isra.104+0xf6/0x2f0 > [] group_sched_in+0x6e/0x190 > [] ctx_sched_in+0x2fe/0x5f0 > [] perf_event_sched_in+0x60/0x80 > [] ctx_resched+0x5b/0x90 > [] __perf_event_enable+0x1e1/0x240 > [] event_function+0xa9/0x180 > [] ? perf_cgroup_attach+0x70/0x70 > [] remote_function+0x3f/0x50 > [] flush_smp_call_function_queue+0x83/0x150 > [] generic_smp_call_function_single_interrupt+0x13/0x60 > [] smp_call_function_single_interrupt+0x27/0x40 > [] call_function_single_interrupt+0x89/0x90 > [] finish_task_switch+0xa6/0x210 > [] ? finish_task_switch+0x67/0x210 > [] __schedule+0x3dd/0xb50 > [] schedule+0x35/0x80 > [] sys_sched_yield+0x61/0x70 > [] entry_SYSCALL_64_fastpath+0x18/0xa8 > ---[ end trace 6235f556f5ea83a9 ]--- This patch puts the checks in perf_aux_output_begin() in the same order as that of perf_mmap_close(). Reported-by: Vince Weaver Signed-off-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: vince@deater.net Link: http://lkml.kernel.org/r/20160906132353.19887-3-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index ae9b90d..257fa46 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -330,15 +330,22 @@ void *perf_aux_output_begin(struct perf_output_handle *handle, if (!rb) return NULL; - if (!rb_has_aux(rb) || !atomic_inc_not_zero(&rb->aux_refcount)) + if (!rb_has_aux(rb)) goto err; /* - * If rb::aux_mmap_count is zero (and rb_has_aux() above went through), - * the aux buffer is in perf_mmap_close(), about to get freed. + * If aux_mmap_count is zero, the aux buffer is in perf_mmap_close(), + * about to get freed, so we leave immediately. + * + * Checking rb::aux_mmap_count and rb::refcount has to be done in + * the same order, see perf_mmap_close. Otherwise we end up freeing + * aux pages in this path, which is a bug, because in_atomic(). */ if (!atomic_read(&rb->aux_mmap_count)) - goto err_put; + goto err; + + if (!atomic_inc_not_zero(&rb->aux_refcount)) + goto err; /* * Nesting is not supported for AUX area, make sure nested -- cgit v0.10.2 From a9a94401c2b5805c71e39427b1af1bf1b9f67cd0 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 6 Sep 2016 16:23:51 +0300 Subject: perf/x86/intel/bts: Fix confused ordering of PMU callbacks The intel_bts driver is using a CPU-local 'started' variable to order callbacks and PMIs and make sure that AUX transactions don't get messed up. However, the ordering rules in regard to this variable is a complete mess, which recently resulted in perf_fuzzer-triggered warnings and panics. The general ordering rule that is patch is enforcing is that this cpu-local variable be set only when the cpu-local AUX transaction is active; consequently, this variable is to be checked before the AUX related bits can be touched. Reported-by: Vince Weaver Signed-off-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: vince@deater.net Link: http://lkml.kernel.org/r/20160906132353.19887-4-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c index 0a6e393..61e1d71 100644 --- a/arch/x86/events/intel/bts.c +++ b/arch/x86/events/intel/bts.c @@ -31,7 +31,17 @@ struct bts_ctx { struct perf_output_handle handle; struct debug_store ds_back; - int started; + int state; +}; + +/* BTS context states: */ +enum { + /* no ongoing AUX transactions */ + BTS_STATE_STOPPED = 0, + /* AUX transaction is on, BTS tracing is disabled */ + BTS_STATE_INACTIVE, + /* AUX transaction is on, BTS tracing is running */ + BTS_STATE_ACTIVE, }; static DEFINE_PER_CPU(struct bts_ctx, bts_ctx); @@ -204,6 +214,15 @@ static void bts_update(struct bts_ctx *bts) static int bts_buffer_reset(struct bts_buffer *buf, struct perf_output_handle *handle); +/* + * Ordering PMU callbacks wrt themselves and the PMI is done by means + * of bts::state, which: + * - is set when bts::handle::event is valid, that is, between + * perf_aux_output_begin() and perf_aux_output_end(); + * - is zero otherwise; + * - is ordered against bts::handle::event with a compiler barrier. + */ + static void __bts_event_start(struct perf_event *event) { struct bts_ctx *bts = this_cpu_ptr(&bts_ctx); @@ -221,10 +240,13 @@ static void __bts_event_start(struct perf_event *event) /* * local barrier to make sure that ds configuration made it - * before we enable BTS + * before we enable BTS and bts::state goes ACTIVE */ wmb(); + /* INACTIVE/STOPPED -> ACTIVE */ + WRITE_ONCE(bts->state, BTS_STATE_ACTIVE); + intel_pmu_enable_bts(config); } @@ -251,9 +273,6 @@ static void bts_event_start(struct perf_event *event, int flags) __bts_event_start(event); - /* PMI handler: this counter is running and likely generating PMIs */ - ACCESS_ONCE(bts->started) = 1; - return; fail_end_stop: @@ -263,30 +282,34 @@ fail_stop: event->hw.state = PERF_HES_STOPPED; } -static void __bts_event_stop(struct perf_event *event) +static void __bts_event_stop(struct perf_event *event, int state) { + struct bts_ctx *bts = this_cpu_ptr(&bts_ctx); + + /* ACTIVE -> INACTIVE(PMI)/STOPPED(->stop()) */ + WRITE_ONCE(bts->state, state); + /* * No extra synchronization is mandated by the documentation to have * BTS data stores globally visible. */ intel_pmu_disable_bts(); - - if (event->hw.state & PERF_HES_STOPPED) - return; - - ACCESS_ONCE(event->hw.state) |= PERF_HES_STOPPED; } static void bts_event_stop(struct perf_event *event, int flags) { struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events); struct bts_ctx *bts = this_cpu_ptr(&bts_ctx); - struct bts_buffer *buf = perf_get_aux(&bts->handle); + struct bts_buffer *buf = NULL; + int state = READ_ONCE(bts->state); + + if (state == BTS_STATE_ACTIVE) + __bts_event_stop(event, BTS_STATE_STOPPED); - /* PMI handler: don't restart this counter */ - ACCESS_ONCE(bts->started) = 0; + if (state != BTS_STATE_STOPPED) + buf = perf_get_aux(&bts->handle); - __bts_event_stop(event); + event->hw.state |= PERF_HES_STOPPED; if (flags & PERF_EF_UPDATE) { bts_update(bts); @@ -296,6 +319,7 @@ static void bts_event_stop(struct perf_event *event, int flags) bts->handle.head = local_xchg(&buf->data_size, buf->nr_pages << PAGE_SHIFT); + perf_aux_output_end(&bts->handle, local_xchg(&buf->data_size, 0), !!local_xchg(&buf->lost, 0)); } @@ -310,8 +334,20 @@ static void bts_event_stop(struct perf_event *event, int flags) void intel_bts_enable_local(void) { struct bts_ctx *bts = this_cpu_ptr(&bts_ctx); + int state = READ_ONCE(bts->state); + + /* + * Here we transition from INACTIVE to ACTIVE; + * if we instead are STOPPED from the interrupt handler, + * stay that way. Can't be ACTIVE here though. + */ + if (WARN_ON_ONCE(state == BTS_STATE_ACTIVE)) + return; + + if (state == BTS_STATE_STOPPED) + return; - if (bts->handle.event && bts->started) + if (bts->handle.event) __bts_event_start(bts->handle.event); } @@ -319,8 +355,15 @@ void intel_bts_disable_local(void) { struct bts_ctx *bts = this_cpu_ptr(&bts_ctx); + /* + * Here we transition from ACTIVE to INACTIVE; + * do nothing for STOPPED or INACTIVE. + */ + if (READ_ONCE(bts->state) != BTS_STATE_ACTIVE) + return; + if (bts->handle.event) - __bts_event_stop(bts->handle.event); + __bts_event_stop(bts->handle.event, BTS_STATE_INACTIVE); } static int @@ -407,9 +450,13 @@ int intel_bts_interrupt(void) struct perf_event *event = bts->handle.event; struct bts_buffer *buf; s64 old_head; - int err; + int err = -ENOSPC; - if (!event || !bts->started) + /* + * this is wrapped in intel_bts_enable_local/intel_bts_disable_local, + * so we can only be INACTIVE or STOPPED + */ + if (READ_ONCE(bts->state) == BTS_STATE_STOPPED) return 0; buf = perf_get_aux(&bts->handle); @@ -432,12 +479,21 @@ int intel_bts_interrupt(void) !!local_xchg(&buf->lost, 0)); buf = perf_aux_output_begin(&bts->handle, event); - if (!buf) - return 1; + if (buf) + err = bts_buffer_reset(buf, &bts->handle); - err = bts_buffer_reset(buf, &bts->handle); - if (err) - perf_aux_output_end(&bts->handle, 0, false); + if (err) { + WRITE_ONCE(bts->state, BTS_STATE_STOPPED); + + if (buf) { + /* + * BTS_STATE_STOPPED should be visible before + * cleared handle::event + */ + barrier(); + perf_aux_output_end(&bts->handle, 0, false); + } + } return 1; } -- cgit v0.10.2 From 4d4c474124649198d9b0a065c06f9362cf18e14e Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 6 Sep 2016 16:23:52 +0300 Subject: perf/x86/intel/bts: Fix BTS PMI detection Since BTS doesn't have a dedicated PMI status bit, the driver needs to take extra care to check for the condition that triggers it to avoid spurious NMI warnings. Regardless of the local BTS context state, the only way of knowing that the NMI is ours is to compare the write pointer against the interrupt threshold. Reported-by: Vince Weaver Signed-off-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: vince@deater.net Link: http://lkml.kernel.org/r/20160906132353.19887-5-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c index 61e1d71..9233edf 100644 --- a/arch/x86/events/intel/bts.c +++ b/arch/x86/events/intel/bts.c @@ -446,26 +446,37 @@ bts_buffer_reset(struct bts_buffer *buf, struct perf_output_handle *handle) int intel_bts_interrupt(void) { + struct debug_store *ds = this_cpu_ptr(&cpu_hw_events)->ds; struct bts_ctx *bts = this_cpu_ptr(&bts_ctx); struct perf_event *event = bts->handle.event; struct bts_buffer *buf; s64 old_head; - int err = -ENOSPC; + int err = -ENOSPC, handled = 0; + + /* + * The only surefire way of knowing if this NMI is ours is by checking + * the write ptr against the PMI threshold. + */ + if (ds->bts_index >= ds->bts_interrupt_threshold) + handled = 1; /* * this is wrapped in intel_bts_enable_local/intel_bts_disable_local, * so we can only be INACTIVE or STOPPED */ if (READ_ONCE(bts->state) == BTS_STATE_STOPPED) - return 0; + return handled; buf = perf_get_aux(&bts->handle); + if (!buf) + return handled; + /* * Skip snapshot counters: they don't use the interrupt, but * there's no other way of telling, because the pointer will * keep moving */ - if (!buf || buf->snapshot) + if (buf->snapshot) return 0; old_head = local_read(&buf->head); @@ -473,7 +484,7 @@ int intel_bts_interrupt(void) /* no new data */ if (old_head == local_read(&buf->head)) - return 0; + return handled; perf_aux_output_end(&bts->handle, local_xchg(&buf->data_size, 0), !!local_xchg(&buf->lost, 0)); -- cgit v0.10.2 From ef9ef3befa0d76008e988a9ed9fe439e803351b9 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Tue, 6 Sep 2016 16:23:53 +0300 Subject: perf/x86/intel/bts: Kill a silly warning At the moment, intel_bts will WARN() out if there is more than one event writing to the same ring buffer, via SET_OUTPUT, and will only send data from one event to a buffer. There is no reason to have this warning in, so kill it. Signed-off-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: vince@deater.net Link: http://lkml.kernel.org/r/20160906132353.19887-6-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c index 9233edf..bdcd651 100644 --- a/arch/x86/events/intel/bts.c +++ b/arch/x86/events/intel/bts.c @@ -378,8 +378,6 @@ bts_buffer_reset(struct bts_buffer *buf, struct perf_output_handle *handle) return 0; head = handle->head & ((buf->nr_pages << PAGE_SHIFT) - 1); - if (WARN_ON_ONCE(head != local_read(&buf->head))) - return -EINVAL; phys = &buf->buf[buf->cur_buf]; space = phys->offset + phys->displacement + phys->size - head; -- cgit v0.10.2 From 8ef9b8455a2a3049efa9e46e8a6402b972a3eb41 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 7 Sep 2016 14:42:55 +0200 Subject: perf/x86/intel: Fix PEBSv3 record drain Alexander hit the WARN_ON_ONCE(!event) on his Skylake while running the perf fuzzer. This means the PEBSv3 record included a status bit for an inactive event, something that _should_ not happen. Move the code that filters the status bits against our known PEBS events up a spot to guarantee we only deal with events we know about. Further add "continue" statements to the WARN_ON_ONCE()s such that we'll not die nor generate silly events in case we ever do hit them again. Reported-by: Alexander Shishkin Tested-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Kan Liang Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: stable@vger.kernel.org Fixes: a3d86542de88 ("perf/x86/intel/pebs: Add PEBSv3 decoding") Signed-off-by: Ingo Molnar diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index 7ce9f3f..9b983a4 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1274,18 +1274,18 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs) struct pebs_record_nhm *p = at; u64 pebs_status; - /* PEBS v3 has accurate status bits */ + pebs_status = p->status & cpuc->pebs_enabled; + pebs_status &= (1ULL << x86_pmu.max_pebs_events) - 1; + + /* PEBS v3 has more accurate status bits */ if (x86_pmu.intel_cap.pebs_format >= 3) { - for_each_set_bit(bit, (unsigned long *)&p->status, - MAX_PEBS_EVENTS) + for_each_set_bit(bit, (unsigned long *)&pebs_status, + x86_pmu.max_pebs_events) counts[bit]++; continue; } - pebs_status = p->status & cpuc->pebs_enabled; - pebs_status &= (1ULL << x86_pmu.max_pebs_events) - 1; - /* * On some CPUs the PEBS status can be zero when PEBS is * racing with clearing of GLOBAL_STATUS. @@ -1333,8 +1333,11 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs) continue; event = cpuc->events[bit]; - WARN_ON_ONCE(!event); - WARN_ON_ONCE(!event->attr.precise_ip); + if (WARN_ON_ONCE(!event)) + continue; + + if (WARN_ON_ONCE(!event->attr.precise_ip)) + continue; /* log dropped samples number */ if (error[bit]) -- cgit v0.10.2 From e1487888eccc83e9eb5a3659955f79b039dc7945 Mon Sep 17 00:00:00 2001 From: Chris Brandt Date: Wed, 7 Sep 2016 14:57:09 -0400 Subject: net: ethernet: renesas: sh_eth: add POST registers for rz Due to a mistake in the hardware manual, the FWSLC and POST1-4 registers were not documented and left out of the driver for RZ/A making the CAM feature non-operational. Additionally, when the offset values for POST1-4 are left blank, the driver attempts to set them using an offset of 0xFFFF which can cause a memory corruption or panic. This patch fixes the panic and properly enables CAM. Reported-by: Daniel Palmer Signed-off-by: Chris Brandt Acked-by: Sergei Shtylyov Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 799d58d..054e795 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -201,9 +201,14 @@ static const u16 sh_eth_offset_fast_rz[SH_ETH_MAX_REGISTER_OFFSET] = { [ARSTR] = 0x0000, [TSU_CTRST] = 0x0004, + [TSU_FWSLC] = 0x0038, [TSU_VTAG0] = 0x0058, [TSU_ADSBSY] = 0x0060, [TSU_TEN] = 0x0064, + [TSU_POST1] = 0x0070, + [TSU_POST2] = 0x0074, + [TSU_POST3] = 0x0078, + [TSU_POST4] = 0x007c, [TSU_ADRH0] = 0x0100, [TXNLCR0] = 0x0080, @@ -2786,6 +2791,8 @@ static void sh_eth_tsu_init(struct sh_eth_private *mdp) { if (sh_eth_is_rz_fast_ether(mdp)) { sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */ + sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, + TSU_FWSLC); /* Enable POST registers */ return; } -- cgit v0.10.2 From b519d408ea32040b1c7e10b155a3ee9a36660947 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 11 Sep 2016 14:50:01 -0400 Subject: NFSv4.1: Fix the CREATE_SESSION slot number accounting Ensure that we conform to the algorithm described in RFC5661, section 18.36.4 for when to bump the sequence id. In essence we do it for all cases except when the RPC call timed out, or in case of the server returning NFS4ERR_DELAY or NFS4ERR_STALE_CLIENTID. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index c380d2e..a9dec32 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7570,12 +7570,20 @@ static int _nfs4_proc_create_session(struct nfs_client *clp, status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); trace_nfs4_create_session(clp, status); + switch (status) { + case -NFS4ERR_STALE_CLIENTID: + case -NFS4ERR_DELAY: + case -ETIMEDOUT: + case -EACCES: + case -EAGAIN: + goto out; + }; + + clp->cl_seqid++; if (!status) { /* Verify the session's negotiated channel_attrs values */ status = nfs4_verify_channel_attrs(&args, &res); /* Increment the clientid slot sequence id */ - if (clp->cl_seqid == res.seqid) - clp->cl_seqid++; if (status) goto out; nfs4_update_session(session, &res); -- cgit v0.10.2 From bd0b841fee49de421f615cc173ccff063303672f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 11 Sep 2016 14:41:49 -0700 Subject: nvme: make NVME_RDMA depend on BLOCK Commit aa71987472a9 ("nvme: fabrics drivers don't need the nvme-pci driver") removed the dependency on BLK_DEV_NVME, but the cdoe does depend on the block layer (which used to be an implicit dependency through BLK_DEV_NVME). Otherwise you get various errors from the kbuild test robot random config testing when that happens to hit a configuration with BLOCK device support disabled. Cc: Christoph Hellwig Cc: Jay Freyensee Cc: Sagi Grimberg Signed-off-by: Linus Torvalds diff --git a/drivers/nvme/host/Kconfig b/drivers/nvme/host/Kconfig index 0c644f7..f7d37a6 100644 --- a/drivers/nvme/host/Kconfig +++ b/drivers/nvme/host/Kconfig @@ -30,7 +30,7 @@ config NVME_FABRICS config NVME_RDMA tristate "NVM Express over Fabrics RDMA host driver" - depends on INFINIBAND + depends on INFINIBAND && BLOCK select NVME_CORE select NVME_FABRICS select SG_POOL -- cgit v0.10.2 From 74a9e9054456658f047bf71d9108844defde793d Mon Sep 17 00:00:00 2001 From: Kamal Heib Date: Sun, 11 Sep 2016 10:56:17 +0300 Subject: net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_all() mlx4_en_dcbnl_set_all() returns u8, so return value can't be negative in case of failure. Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands") Signed-off-by: Kamal Heib Signed-off-by: Rana Shahout Reported-by: Dan Carpenter Signed-off-by: Tariq Toukan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c index 99c6bbd..97081e5 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c @@ -158,10 +158,9 @@ static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev) struct mlx4_en_priv *priv = netdev_priv(netdev); struct mlx4_en_dev *mdev = priv->mdev; struct mlx4_en_cee_config *dcb_cfg = &priv->cee_params.dcb_cfg; - int err = 0; if (!(priv->cee_params.dcbx_cap & DCB_CAP_DCBX_VER_CEE)) - return -EINVAL; + return 1; if (dcb_cfg->pfc_state) { int tc; @@ -199,15 +198,17 @@ static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev) en_dbg(DRV, priv, "Set pfc off\n"); } - err = mlx4_SET_PORT_general(mdev->dev, priv->port, - priv->rx_skb_size + ETH_FCS_LEN, - priv->prof->tx_pause, - priv->prof->tx_ppp, - priv->prof->rx_pause, - priv->prof->rx_ppp); - if (err) + if (mlx4_SET_PORT_general(mdev->dev, priv->port, + priv->rx_skb_size + ETH_FCS_LEN, + priv->prof->tx_pause, + priv->prof->tx_ppp, + priv->prof->rx_pause, + priv->prof->rx_ppp)) { en_err(priv, "Failed setting pause params\n"); - return err; + return 1; + } + + return 0; } static u8 mlx4_en_dcbnl_get_state(struct net_device *dev) -- cgit v0.10.2 From c677071741343381f4f555867c04af7ec4a90869 Mon Sep 17 00:00:00 2001 From: Kamal Heib Date: Sun, 11 Sep 2016 10:56:18 +0300 Subject: net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_state() mlx4_en_dcbnl_set_state() returns u8, the return value from mlx4_en_setup_tc() could be negative in case of failure, so fix that. Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands") Signed-off-by: Kamal Heib Signed-off-by: Tariq Toukan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c index 97081e5..316a707 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c @@ -239,7 +239,10 @@ static u8 mlx4_en_dcbnl_set_state(struct net_device *dev, u8 state) priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED; } - return mlx4_en_setup_tc(dev, num_tcs); + if (mlx4_en_setup_tc(dev, num_tcs)) + return 1; + + return 0; } /* On success returns a non-zero 802.1p user priority bitmap -- cgit v0.10.2 From 564ed9b187082da79726a2f25bb88a58ebeec7e8 Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Sun, 11 Sep 2016 10:56:19 +0300 Subject: net/mlx4_en: Fixes for DCBX This patch adds a capability check before enabling DCBX. In addition, it re-organizes the relevant data structures, and fixes a typo in a define. Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands") Signed-off-by: Tariq Toukan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c index 316a707..b04760a 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c @@ -94,7 +94,7 @@ static u8 mlx4_en_dcbnl_getcap(struct net_device *dev, int capid, u8 *cap) *cap = true; break; case DCB_CAP_ATTR_DCBX: - *cap = priv->cee_params.dcbx_cap; + *cap = priv->dcbx_cap; break; case DCB_CAP_ATTR_PFC_TCS: *cap = 1 << mlx4_max_tc(priv->mdev->dev); @@ -111,14 +111,14 @@ static u8 mlx4_en_dcbnl_getpfcstate(struct net_device *netdev) { struct mlx4_en_priv *priv = netdev_priv(netdev); - return priv->cee_params.dcb_cfg.pfc_state; + return priv->cee_config.pfc_state; } static void mlx4_en_dcbnl_setpfcstate(struct net_device *netdev, u8 state) { struct mlx4_en_priv *priv = netdev_priv(netdev); - priv->cee_params.dcb_cfg.pfc_state = state; + priv->cee_config.pfc_state = state; } static void mlx4_en_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority, @@ -126,7 +126,7 @@ static void mlx4_en_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority, { struct mlx4_en_priv *priv = netdev_priv(netdev); - *setting = priv->cee_params.dcb_cfg.tc_config[priority].dcb_pfc; + *setting = priv->cee_config.dcb_pfc[priority]; } static void mlx4_en_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority, @@ -134,8 +134,8 @@ static void mlx4_en_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority, { struct mlx4_en_priv *priv = netdev_priv(netdev); - priv->cee_params.dcb_cfg.tc_config[priority].dcb_pfc = setting; - priv->cee_params.dcb_cfg.pfc_state = true; + priv->cee_config.dcb_pfc[priority] = setting; + priv->cee_config.pfc_state = true; } static int mlx4_en_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num) @@ -157,12 +157,11 @@ static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev) { struct mlx4_en_priv *priv = netdev_priv(netdev); struct mlx4_en_dev *mdev = priv->mdev; - struct mlx4_en_cee_config *dcb_cfg = &priv->cee_params.dcb_cfg; - if (!(priv->cee_params.dcbx_cap & DCB_CAP_DCBX_VER_CEE)) + if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) return 1; - if (dcb_cfg->pfc_state) { + if (priv->cee_config.pfc_state) { int tc; priv->prof->rx_pause = 0; @@ -170,7 +169,7 @@ static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev) for (tc = 0; tc < CEE_DCBX_MAX_PRIO; tc++) { u8 tc_mask = 1 << tc; - switch (dcb_cfg->tc_config[tc].dcb_pfc) { + switch (priv->cee_config.dcb_pfc[tc]) { case pfc_disabled: priv->prof->tx_ppp &= ~tc_mask; priv->prof->rx_ppp &= ~tc_mask; @@ -226,7 +225,7 @@ static u8 mlx4_en_dcbnl_set_state(struct net_device *dev, u8 state) struct mlx4_en_priv *priv = netdev_priv(dev); int num_tcs = 0; - if (!(priv->cee_params.dcbx_cap & DCB_CAP_DCBX_VER_CEE)) + if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) return 1; if (!!(state) == !!(priv->flags & MLX4_EN_FLAG_DCB_ENABLED)) @@ -256,7 +255,7 @@ static int mlx4_en_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id) .selector = idtype, .protocol = id, }; - if (!(priv->cee_params.dcbx_cap & DCB_CAP_DCBX_VER_CEE)) + if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) return 0; return dcb_getapp(netdev, &app); @@ -268,7 +267,7 @@ static int mlx4_en_dcbnl_setapp(struct net_device *netdev, u8 idtype, struct mlx4_en_priv *priv = netdev_priv(netdev); struct dcb_app app; - if (!(priv->cee_params.dcbx_cap & DCB_CAP_DCBX_VER_CEE)) + if (!(priv->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) return -EINVAL; memset(&app, 0, sizeof(struct dcb_app)); @@ -437,7 +436,7 @@ static u8 mlx4_en_dcbnl_getdcbx(struct net_device *dev) { struct mlx4_en_priv *priv = netdev_priv(dev); - return priv->cee_params.dcbx_cap; + return priv->dcbx_cap; } static u8 mlx4_en_dcbnl_setdcbx(struct net_device *dev, u8 mode) @@ -446,7 +445,7 @@ static u8 mlx4_en_dcbnl_setdcbx(struct net_device *dev, u8 mode) struct ieee_ets ets = {0}; struct ieee_pfc pfc = {0}; - if (mode == priv->cee_params.dcbx_cap) + if (mode == priv->dcbx_cap) return 0; if ((mode & DCB_CAP_DCBX_LLD_MANAGED) || @@ -455,7 +454,7 @@ static u8 mlx4_en_dcbnl_setdcbx(struct net_device *dev, u8 mode) !(mode & DCB_CAP_DCBX_HOST)) goto err; - priv->cee_params.dcbx_cap = mode; + priv->dcbx_cap = mode; ets.ets_cap = IEEE_8021QAZ_MAX_TCS; pfc.pfc_cap = IEEE_8021QAZ_MAX_TCS; diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 4198e9b..fedb829 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -71,10 +71,11 @@ int mlx4_en_setup_tc(struct net_device *dev, u8 up) #ifdef CONFIG_MLX4_EN_DCB if (!mlx4_is_slave(priv->mdev->dev)) { if (up) { - priv->flags |= MLX4_EN_FLAG_DCB_ENABLED; + if (priv->dcbx_cap) + priv->flags |= MLX4_EN_FLAG_DCB_ENABLED; } else { priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED; - priv->cee_params.dcb_cfg.pfc_state = false; + priv->cee_config.pfc_state = false; } } #endif /* CONFIG_MLX4_EN_DCB */ @@ -3048,9 +3049,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, struct mlx4_en_priv *priv; int i; int err; -#ifdef CONFIG_MLX4_EN_DCB - struct tc_configuration *tc; -#endif dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), MAX_TX_RINGS, MAX_RX_RINGS); @@ -3117,16 +3115,13 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, priv->msg_enable = MLX4_EN_MSG_LEVEL; #ifdef CONFIG_MLX4_EN_DCB if (!mlx4_is_slave(priv->mdev->dev)) { - priv->cee_params.dcbx_cap = DCB_CAP_DCBX_VER_CEE | - DCB_CAP_DCBX_HOST | - DCB_CAP_DCBX_VER_IEEE; + priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST | + DCB_CAP_DCBX_VER_IEEE; priv->flags |= MLX4_EN_DCB_ENABLED; - priv->cee_params.dcb_cfg.pfc_state = false; + priv->cee_config.pfc_state = false; - for (i = 0; i < MLX4_EN_NUM_UP; i++) { - tc = &priv->cee_params.dcb_cfg.tc_config[i]; - tc->dcb_pfc = pfc_disabled; - } + for (i = 0; i < MLX4_EN_NUM_UP; i++) + priv->cee_config.dcb_pfc[i] = pfc_disabled; if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { dev->dcbnl_ops = &mlx4_en_dcbnl_ops; diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h index 2c2913d..9099dbd 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -482,20 +482,10 @@ enum dcb_pfc_type { pfc_enabled_rx }; -struct tc_configuration { - enum dcb_pfc_type dcb_pfc; -}; - struct mlx4_en_cee_config { bool pfc_state; - struct tc_configuration tc_config[MLX4_EN_NUM_UP]; + enum dcb_pfc_type dcb_pfc[MLX4_EN_NUM_UP]; }; - -struct mlx4_en_cee_params { - u8 dcbx_cap; - struct mlx4_en_cee_config dcb_cfg; -}; - #endif struct ethtool_flow_id { @@ -624,7 +614,8 @@ struct mlx4_en_priv { struct ieee_ets ets; u16 maxrate[IEEE_8021QAZ_MAX_TCS]; enum dcbnl_cndd_states cndd_state[IEEE_8021QAZ_MAX_TCS]; - struct mlx4_en_cee_params cee_params; + struct mlx4_en_cee_config cee_config; + u8 dcbx_cap; #endif #ifdef CONFIG_RFS_ACCEL spinlock_t filters_lock; diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c index 3d2095e..c5b2064 100644 --- a/drivers/net/ethernet/mellanox/mlx4/port.c +++ b/drivers/net/ethernet/mellanox/mlx4/port.c @@ -52,7 +52,7 @@ #define MLX4_FLAG_V_IGNORE_FCS_MASK 0x2 #define MLX4_IGNORE_FCS_MASK 0x1 -#define MLNX4_TX_MAX_NUMBER 8 +#define MLX4_TC_MAX_NUMBER 8 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table) { @@ -2022,7 +2022,7 @@ int mlx4_max_tc(struct mlx4_dev *dev) u8 num_tc = dev->caps.max_tc_eth; if (!num_tc) - num_tc = MLNX4_TX_MAX_NUMBER; + num_tc = MLX4_TC_MAX_NUMBER; return num_tc; } -- cgit v0.10.2 From 7a61fc86af4a0c957c5b8c5777ab21d5cc286748 Mon Sep 17 00:00:00 2001 From: Moshe Shemesh Date: Sun, 11 Sep 2016 10:56:20 +0300 Subject: net/mlx4_en: Fix panic on xmit while port is down When port is down, tx drop counter update is not needed. Updating the counter in this case can cause a kernel panic as when the port is down, ring can be NULL. Fixes: 63a664b7e92b ("net/mlx4_en: fix tx_dropped bug") Signed-off-by: Moshe Shemesh Signed-off-by: Tariq Toukan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c index 9df87ca..e2509bb 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c @@ -818,7 +818,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) real_size = get_real_size(skb, shinfo, dev, &lso_header_size, &inline_ok, &fragptr); if (unlikely(!real_size)) - goto tx_drop; + goto tx_drop_count; /* Align descriptor to TXBB size */ desc_size = ALIGN(real_size, TXBB_SIZE); @@ -826,7 +826,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) if (unlikely(nr_txbb > MAX_DESC_TXBBS)) { if (netif_msg_tx_err(priv)) en_warn(priv, "Oversized header or SG list\n"); - goto tx_drop; + goto tx_drop_count; } bf_ok = ring->bf_enabled; @@ -1071,9 +1071,10 @@ tx_drop_unmap: PCI_DMA_TODEVICE); } +tx_drop_count: + ring->tx_dropped++; tx_drop: dev_kfree_skb_any(skb); - ring->tx_dropped++; return NETDEV_TX_OK; } @@ -1106,7 +1107,7 @@ netdev_tx_t mlx4_en_xmit_frame(struct mlx4_en_rx_alloc *frame, goto tx_drop; if (mlx4_en_is_tx_ring_full(ring)) - goto tx_drop; + goto tx_drop_count; /* fetch ring->cons far ahead before needing it to avoid stall */ ring_cons = READ_ONCE(ring->cons); @@ -1176,7 +1177,8 @@ netdev_tx_t mlx4_en_xmit_frame(struct mlx4_en_rx_alloc *frame, return NETDEV_TX_OK; -tx_drop: +tx_drop_count: ring->tx_dropped++; +tx_drop: return NETDEV_TX_BUSY; } -- cgit v0.10.2 From 9395452b4aab7bc2475ef8935b4a4fb99d778d70 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 11 Sep 2016 20:02:25 -0700 Subject: Linux 4.8-rc6 diff --git a/Makefile b/Makefile index a4e6cc5..1a8c8dd 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 4 PATCHLEVEL = 8 SUBLEVEL = 0 -EXTRAVERSION = -rc5 +EXTRAVERSION = -rc6 NAME = Psychotic Stoned Sheep # *DOCUMENTATION* -- cgit v0.10.2 From 035ee288ae7ade4152f1c3cf23a587b04fdc526c Mon Sep 17 00:00:00 2001 From: Lukas Wunner Date: Tue, 6 Sep 2016 06:20:46 +0200 Subject: PCI: Fix bridge_d3 update on device removal Starting with v4.8, we allow a PCIe port to runtime suspend to D3hot if the port itself and its children satisfy a number of conditions. Once a child is removed, we recheck those conditions in case the removed device was blocking the port from suspending. The rechecking needs to happen *after* the device has been removed from the bus it resides on. Otherwise when walking the port's subordinate bus in pci_bridge_d3_update(), the device being removed would erroneously still be taken into account. However the device is removed from the bus_list in pci_destroy_dev() and we currently recheck *before* that. Fix it. Fixes: 9d26d3a8f1b0 ("PCI: Put PCIe ports into D3 during suspend") Signed-off-by: Lukas Wunner Signed-off-by: Bjorn Helgaas Reviewed-by: Mika Westerberg Acked-by: Rafael J. Wysocki diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index d1ef7ac..f9357e0 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -40,6 +40,7 @@ static void pci_destroy_dev(struct pci_dev *dev) list_del(&dev->bus_list); up_write(&pci_bus_sem); + pci_bridge_d3_device_removed(dev); pci_free_resources(dev); put_device(&dev->dev); } @@ -96,8 +97,6 @@ static void pci_remove_bus_device(struct pci_dev *dev) dev->subordinate = NULL; } - pci_bridge_d3_device_removed(dev); - pci_destroy_dev(dev); } -- cgit v0.10.2 From 9ad18b75c2f6e4a78ce204e79f37781f8815c0fa Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 17 Aug 2016 23:19:01 -0400 Subject: asm-generic: make get_user() clear the destination on errors both for access_ok() failures and for faults halfway through Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index 04e21a4..32901d1 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -230,14 +230,18 @@ extern int __put_user_bad(void) __attribute__((noreturn)); might_fault(); \ access_ok(VERIFY_READ, __p, sizeof(*ptr)) ? \ __get_user((x), (__typeof__(*(ptr)) *)__p) : \ - -EFAULT; \ + ((x) = (__typeof__(*(ptr)))0,-EFAULT); \ }) #ifndef __get_user_fn static inline int __get_user_fn(size_t size, const void __user *ptr, void *x) { - size = __copy_from_user(x, ptr, size); - return size ? -EFAULT : size; + size_t n = __copy_from_user(x, ptr, size); + if (unlikely(n)) { + memset(x + (size - n), 0, n); + return -EFAULT; + } + return 0; } #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k) -- cgit v0.10.2 From eb47e0293baaa3044022059f1fa9ff474bfe35cb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 18 Aug 2016 19:34:00 -0400 Subject: cris: buggered copy_from_user/copy_to_user/clear_user * copy_from_user() on access_ok() failure ought to zero the destination * none of those primitives should skip the access_ok() check in case of small constant size. Cc: stable@vger.kernel.org Acked-by: Jesper Nilsson Signed-off-by: Al Viro diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h index e3530d0..56c7d57 100644 --- a/arch/cris/include/asm/uaccess.h +++ b/arch/cris/include/asm/uaccess.h @@ -194,30 +194,6 @@ extern unsigned long __copy_user(void __user *to, const void *from, unsigned lon extern unsigned long __copy_user_zeroing(void *to, const void __user *from, unsigned long n); extern unsigned long __do_clear_user(void __user *to, unsigned long n); -static inline unsigned long -__generic_copy_to_user(void __user *to, const void *from, unsigned long n) -{ - if (access_ok(VERIFY_WRITE, to, n)) - return __copy_user(to, from, n); - return n; -} - -static inline unsigned long -__generic_copy_from_user(void *to, const void __user *from, unsigned long n) -{ - if (access_ok(VERIFY_READ, from, n)) - return __copy_user_zeroing(to, from, n); - return n; -} - -static inline unsigned long -__generic_clear_user(void __user *to, unsigned long n) -{ - if (access_ok(VERIFY_WRITE, to, n)) - return __do_clear_user(to, n); - return n; -} - static inline long __strncpy_from_user(char *dst, const char __user *src, long count) { @@ -282,7 +258,7 @@ __constant_copy_from_user(void *to, const void __user *from, unsigned long n) else if (n == 24) __asm_copy_from_user_24(to, from, ret); else - ret = __generic_copy_from_user(to, from, n); + ret = __copy_user_zeroing(to, from, n); return ret; } @@ -333,7 +309,7 @@ __constant_copy_to_user(void __user *to, const void *from, unsigned long n) else if (n == 24) __asm_copy_to_user_24(to, from, ret); else - ret = __generic_copy_to_user(to, from, n); + ret = __copy_user(to, from, n); return ret; } @@ -366,26 +342,43 @@ __constant_clear_user(void __user *to, unsigned long n) else if (n == 24) __asm_clear_24(to, ret); else - ret = __generic_clear_user(to, n); + ret = __do_clear_user(to, n); return ret; } -#define clear_user(to, n) \ - (__builtin_constant_p(n) ? \ - __constant_clear_user(to, n) : \ - __generic_clear_user(to, n)) +static inline size_t clear_user(void __user *to, size_t n) +{ + if (unlikely(!access_ok(VERIFY_WRITE, to, n))) + return n; + if (__builtin_constant_p(n)) + return __constant_clear_user(to, n); + else + return __do_clear_user(to, n); +} -#define copy_from_user(to, from, n) \ - (__builtin_constant_p(n) ? \ - __constant_copy_from_user(to, from, n) : \ - __generic_copy_from_user(to, from, n)) +static inline size_t copy_from_user(void *to, const void __user *from, size_t n) +{ + if (unlikely(!access_ok(VERIFY_READ, from, n))) { + memset(to, 0, n); + return n; + } + if (__builtin_constant_p(n)) + return __constant_copy_from_user(to, from, n); + else + return __copy_user_zeroing(to, from, n); +} -#define copy_to_user(to, from, n) \ - (__builtin_constant_p(n) ? \ - __constant_copy_to_user(to, from, n) : \ - __generic_copy_to_user(to, from, n)) +static inline size_t copy_to_user(void __user *to, const void *from, size_t n) +{ + if (unlikely(!access_ok(VERIFY_WRITE, to, n))) + return n; + if (__builtin_constant_p(n)) + return __constant_copy_to_user(to, from, n); + else + return __copy_user(to, from, n); +} /* We let the __ versions of copy_from/to_user inline, because they're often * used in fast paths and have only a small space overhead. -- cgit v0.10.2 From 3b8767a8f00cc6538ba6b1cf0f88502e2fd2eb90 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 18 Aug 2016 20:54:02 -0400 Subject: frv: fix clear_user() It should check access_ok(). Otherwise a bunch of places turn into trivially exploitable rootholes. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/frv/include/asm/uaccess.h b/arch/frv/include/asm/uaccess.h index 3ac9a59..87d9e34 100644 --- a/arch/frv/include/asm/uaccess.h +++ b/arch/frv/include/asm/uaccess.h @@ -263,19 +263,25 @@ do { \ extern long __memset_user(void *dst, unsigned long count); extern long __memcpy_user(void *dst, const void *src, unsigned long count); -#define clear_user(dst,count) __memset_user(____force(dst), (count)) +#define __clear_user(dst,count) __memset_user(____force(dst), (count)) #define __copy_from_user_inatomic(to, from, n) __memcpy_user((to), ____force(from), (n)) #define __copy_to_user_inatomic(to, from, n) __memcpy_user(____force(to), (from), (n)) #else -#define clear_user(dst,count) (memset(____force(dst), 0, (count)), 0) +#define __clear_user(dst,count) (memset(____force(dst), 0, (count)), 0) #define __copy_from_user_inatomic(to, from, n) (memcpy((to), ____force(from), (n)), 0) #define __copy_to_user_inatomic(to, from, n) (memcpy(____force(to), (from), (n)), 0) #endif -#define __clear_user clear_user +static inline unsigned long __must_check +clear_user(void __user *to, unsigned long n) +{ + if (likely(__access_ok(to, n))) + n = __clear_user(to, n); + return n; +} static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n) -- cgit v0.10.2 From f35c1e0671728d1c9abc405d05ef548b5fcb2fc4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 18 Aug 2016 21:16:49 -0400 Subject: hexagon: fix strncpy_from_user() error return It's -EFAULT, not -1 (and contrary to the comment in there, __strnlen_user() can return 0 - on faults). Cc: stable@vger.kernel.org Acked-by: Richard Kuo Signed-off-by: Al Viro diff --git a/arch/hexagon/include/asm/uaccess.h b/arch/hexagon/include/asm/uaccess.h index f000a38..f61cfb2 100644 --- a/arch/hexagon/include/asm/uaccess.h +++ b/arch/hexagon/include/asm/uaccess.h @@ -103,7 +103,8 @@ static inline long hexagon_strncpy_from_user(char *dst, const char __user *src, { long res = __strnlen_user(src, n); - /* return from strnlen can't be zero -- that would be rubbish. */ + if (unlikely(!res)) + return -EFAULT; if (res > n) { copy_from_user(dst, src, n); -- cgit v0.10.2 From a5e541f796f17228793694d64b507f5f57db4cd7 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 18 Aug 2016 21:31:41 -0400 Subject: ia64: copy_from_user() should zero the destination on access_ok() failure Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h index 465c709..6c2d2c8 100644 --- a/arch/ia64/include/asm/uaccess.h +++ b/arch/ia64/include/asm/uaccess.h @@ -272,20 +272,17 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) __cu_len; \ }) -#define copy_from_user(to, from, n) \ -({ \ - void *__cu_to = (to); \ - const void __user *__cu_from = (from); \ - long __cu_len = (n); \ - \ - __chk_user_ptr(__cu_from); \ - if (__access_ok(__cu_from, __cu_len, get_fs())) { \ - if (!__builtin_constant_p(n)) \ - check_object_size(__cu_to, __cu_len, false); \ - __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ - } \ - __cu_len; \ -}) +static inline unsigned long +copy_from_user(void *to, const void __user *from, unsigned long n) +{ + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + if (likely(__access_ok(from, n, get_fs()))) + n = __copy_user((__force void __user *) to, from, n); + else + memset(to, 0, n); + return n; +} #define __copy_in_user(to, from, size) __copy_user((to), (from), (size)) -- cgit v0.10.2 From 8ae95ed4ae5fc7c3391ed668b2014c9e2079533b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 18 Aug 2016 22:08:20 -0400 Subject: metag: copy_from_user() should zero the destination on access_ok() failure Cc: stable@vger.kernel.org Acked-by: James Hogan Signed-off-by: Al Viro diff --git a/arch/metag/include/asm/uaccess.h b/arch/metag/include/asm/uaccess.h index 8282cbc..273e612 100644 --- a/arch/metag/include/asm/uaccess.h +++ b/arch/metag/include/asm/uaccess.h @@ -204,8 +204,9 @@ extern unsigned long __must_check __copy_user_zeroing(void *to, static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { - if (access_ok(VERIFY_READ, from, n)) + if (likely(access_ok(VERIFY_READ, from, n))) return __copy_user_zeroing(to, from, n); + memset(to, 0, n); return n; } -- cgit v0.10.2 From 05d9d0b96e53c52a113fd783c0c97c830c8dc7af Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 19 Aug 2016 12:10:02 -0700 Subject: ARC: uaccess: get_user to zero out dest in cause of fault Al reported potential issue with ARC get_user() as it wasn't clearing out destination pointer in case of fault due to bad address etc. Verified using following | { | u32 bogus1 = 0xdeadbeef; | u64 bogus2 = 0xdead; | int rc1, rc2; | | pr_info("Orig values %x %llx\n", bogus1, bogus2); | rc1 = get_user(bogus1, (u32 __user *)0x40000000); | rc2 = get_user(bogus2, (u64 __user *)0x50000000); | pr_info("access %d %d, new values %x %llx\n", | rc1, rc2, bogus1, bogus2); | } | [ARCLinux]# insmod /mnt/kernel-module/qtn.ko | Orig values deadbeef dead | access -14 -14, new values 0 0 Reported-by: Al Viro Cc: Linus Torvalds Cc: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Vineet Gupta Signed-off-by: Al Viro diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index a78d567..41faf17 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -83,7 +83,10 @@ "2: ;nop\n" \ " .section .fixup, \"ax\"\n" \ " .align 4\n" \ - "3: mov %0, %3\n" \ + "3: # return -EFAULT\n" \ + " mov %0, %3\n" \ + " # zero out dst ptr\n" \ + " mov %1, 0\n" \ " j 2b\n" \ " .previous\n" \ " .section __ex_table, \"a\"\n" \ @@ -101,7 +104,11 @@ "2: ;nop\n" \ " .section .fixup, \"ax\"\n" \ " .align 4\n" \ - "3: mov %0, %3\n" \ + "3: # return -EFAULT\n" \ + " mov %0, %3\n" \ + " # zero out dst ptr\n" \ + " mov %1, 0\n" \ + " mov %R1, 0\n" \ " j 2b\n" \ " .previous\n" \ " .section __ex_table, \"a\"\n" \ -- cgit v0.10.2 From e69d700535ac43a18032b3c399c69bf4639e89a2 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 16:18:53 -0400 Subject: mips: copy_from_user() must zero the destination on access_ok() failure Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h index 11b965f..21a2aab 100644 --- a/arch/mips/include/asm/uaccess.h +++ b/arch/mips/include/asm/uaccess.h @@ -14,6 +14,7 @@ #include #include #include +#include #include /* @@ -1170,6 +1171,8 @@ extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n); __cu_len = __invoke_copy_from_user(__cu_to, \ __cu_from, \ __cu_len); \ + } else { \ + memset(__cu_to, 0, __cu_len); \ } \ } \ __cu_len; \ -- cgit v0.10.2 From 43403eabf558d2800b429cd886e996fd555aa542 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 16:32:02 -0400 Subject: mn10300: failing __get_user() and get_user() should zero Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index 20f7bf6..d012e87 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -166,6 +166,7 @@ struct __large_struct { unsigned long buf[100]; }; "2:\n" \ " .section .fixup,\"ax\"\n" \ "3:\n\t" \ + " mov 0,%1\n" \ " mov %3,%0\n" \ " jmp 2b\n" \ " .previous\n" \ -- cgit v0.10.2 From ae7cc577ec2a4a6151c9e928fd1f595d953ecef1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 16:33:10 -0400 Subject: mn10300: copy_from_user() should zero on access_ok() failure... Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/mn10300/lib/usercopy.c b/arch/mn10300/lib/usercopy.c index 7826e6c..ce8899e 100644 --- a/arch/mn10300/lib/usercopy.c +++ b/arch/mn10300/lib/usercopy.c @@ -9,7 +9,7 @@ * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ -#include +#include unsigned long __generic_copy_to_user(void *to, const void *from, unsigned long n) @@ -24,6 +24,8 @@ __generic_copy_from_user(void *to, const void *from, unsigned long n) { if (access_ok(VERIFY_READ, from, n)) __copy_user_zeroing(to, from, n); + else + memset(to, 0, n); return n; } -- cgit v0.10.2 From e33d1f6f72cc82fcfc3d1fb20c9e3ad83b1928fa Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 16:36:36 -0400 Subject: nios2: copy_from_user() should zero the tail of destination Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h index caa51ff..2b4b9e9 100644 --- a/arch/nios2/include/asm/uaccess.h +++ b/arch/nios2/include/asm/uaccess.h @@ -102,9 +102,12 @@ extern long __copy_to_user(void __user *to, const void *from, unsigned long n); static inline long copy_from_user(void *to, const void __user *from, unsigned long n) { - if (!access_ok(VERIFY_READ, from, n)) - return n; - return __copy_from_user(to, from, n); + unsigned long res = n; + if (access_ok(VERIFY_READ, from, n)) + res = __copy_from_user(to, from, n); + if (unlikely(res)) + memset(to + (n - res), 0, res); + return res; } static inline long copy_to_user(void __user *to, const void *from, -- cgit v0.10.2 From 2e29f50ad5e23db37dde9be71410d95d50241ecd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 16:39:01 -0400 Subject: nios2: fix __get_user() a) should not leave crap on fault b) should _not_ require access_ok() in any cases. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h index 2b4b9e9..0ab8232 100644 --- a/arch/nios2/include/asm/uaccess.h +++ b/arch/nios2/include/asm/uaccess.h @@ -142,7 +142,7 @@ extern long strnlen_user(const char __user *s, long n); #define __get_user_unknown(val, size, ptr, err) do { \ err = 0; \ - if (copy_from_user(&(val), ptr, size)) { \ + if (__copy_from_user(&(val), ptr, size)) { \ err = -EFAULT; \ } \ } while (0) @@ -169,7 +169,7 @@ do { \ ({ \ long __gu_err = -EFAULT; \ const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \ - unsigned long __gu_val; \ + unsigned long __gu_val = 0; \ __get_user_common(__gu_val, sizeof(*(ptr)), __gu_ptr, __gu_err);\ (x) = (__force __typeof__(x))__gu_val; \ __gu_err; \ -- cgit v0.10.2 From acb2505d0119033a80c85ac8d02dccae41271667 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 17:05:21 -0400 Subject: openrisc: fix copy_from_user() ... that should zero on faults. Also remove the helpful logics wrt range truncation copied from ppc32. Where it had ever been needed only in case of copy_from_user() *and* had not been merged into the mainline until a month after the need had disappeared. A decade before openrisc went into mainline, I might add... Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index a6bd07c..cbad29b 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -273,28 +273,20 @@ __copy_tofrom_user(void *to, const void *from, unsigned long size); static inline unsigned long copy_from_user(void *to, const void *from, unsigned long n) { - unsigned long over; - - if (access_ok(VERIFY_READ, from, n)) - return __copy_tofrom_user(to, from, n); - if ((unsigned long)from < TASK_SIZE) { - over = (unsigned long)from + n - TASK_SIZE; - return __copy_tofrom_user(to, from, n - over) + over; - } - return n; + unsigned long res = n; + + if (likely(access_ok(VERIFY_READ, from, n))) + n = __copy_tofrom_user(to, from, n); + if (unlikely(res)) + memset(to + (n - res), 0, res); + return res; } static inline unsigned long copy_to_user(void *to, const void *from, unsigned long n) { - unsigned long over; - - if (access_ok(VERIFY_WRITE, to, n)) - return __copy_tofrom_user(to, from, n); - if ((unsigned long)to < TASK_SIZE) { - over = (unsigned long)to + n - TASK_SIZE; - return __copy_tofrom_user(to, from, n - over) + over; - } + if (likely(access_ok(VERIFY_WRITE, to, n))) + n = __copy_tofrom_user(to, from, n); return n; } @@ -303,13 +295,8 @@ extern unsigned long __clear_user(void *addr, unsigned long size); static inline __must_check unsigned long clear_user(void *addr, unsigned long size) { - - if (access_ok(VERIFY_WRITE, addr, size)) - return __clear_user(addr, size); - if ((unsigned long)addr < TASK_SIZE) { - unsigned long over = (unsigned long)addr + size - TASK_SIZE; - return __clear_user(addr, size - over) + over; - } + if (likely(access_ok(VERIFY_WRITE, addr, size))) + size = __clear_user(addr, size); return size; } -- cgit v0.10.2 From aace880feea38875fbc919761b77e5732a3659ef Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Aug 2016 19:03:37 -0400 Subject: parisc: fix copy_from_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 0f59fd9..37a1bee 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -10,6 +10,7 @@ #include #include +#include #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -221,13 +222,14 @@ static inline unsigned long __must_check copy_from_user(void *to, unsigned long n) { int sz = __compiletime_object_size(to); - int ret = -EFAULT; + unsigned long ret = n; if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n)) ret = __copy_from_user(to, from, n); else copy_from_user_overflow(); - + if (unlikely(ret)) + memset(to + (n - ret), 0, ret); return ret; } -- cgit v0.10.2 From 224264657b8b228f949b42346e09ed8c90136a8e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 21 Aug 2016 19:16:26 -0400 Subject: ppc32: fix copy_from_user() should clear on access_ok() failures. Also remove the useless range truncation logics. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index c1dc6c1..c2ce5dd 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -308,40 +308,23 @@ extern unsigned long __copy_tofrom_user(void __user *to, static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { - unsigned long over; - - if (access_ok(VERIFY_READ, from, n)) { + if (likely(access_ok(VERIFY_READ, from, n))) { if (!__builtin_constant_p(n)) check_object_size(to, n, false); return __copy_tofrom_user((__force void __user *)to, from, n); } - if ((unsigned long)from < TASK_SIZE) { - over = (unsigned long)from + n - TASK_SIZE; - if (!__builtin_constant_p(n - over)) - check_object_size(to, n - over, false); - return __copy_tofrom_user((__force void __user *)to, from, - n - over) + over; - } + memset(to, 0, n); return n; } static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) { - unsigned long over; - if (access_ok(VERIFY_WRITE, to, n)) { if (!__builtin_constant_p(n)) check_object_size(from, n, true); return __copy_tofrom_user(to, (__force void __user *)from, n); } - if ((unsigned long)to < TASK_SIZE) { - over = (unsigned long)to + n - TASK_SIZE; - if (!__builtin_constant_p(n)) - check_object_size(from, n - over, true); - return __copy_tofrom_user(to, (__force void __user *)from, - n - over) + over; - } return n; } @@ -439,10 +422,6 @@ static inline unsigned long clear_user(void __user *addr, unsigned long size) might_fault(); if (likely(access_ok(VERIFY_WRITE, addr, size))) return __clear_user(addr, size); - if ((unsigned long)addr < TASK_SIZE) { - unsigned long over = (unsigned long)addr + size - TASK_SIZE; - return __clear_user(addr, size - over) + over; - } return size; } -- cgit v0.10.2 From fd2d2b191fe75825c4c7a6f12f3fef35aaed7dd7 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 21 Aug 2016 22:00:54 -0400 Subject: s390: get_user() should zero on failure Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index 9b49cf1..2c5d292 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -266,28 +266,28 @@ int __put_user_bad(void) __attribute__((noreturn)); __chk_user_ptr(ptr); \ switch (sizeof(*(ptr))) { \ case 1: { \ - unsigned char __x; \ + unsigned char __x = 0; \ __gu_err = __get_user_fn(&__x, ptr, \ sizeof(*(ptr))); \ (x) = *(__force __typeof__(*(ptr)) *) &__x; \ break; \ }; \ case 2: { \ - unsigned short __x; \ + unsigned short __x = 0; \ __gu_err = __get_user_fn(&__x, ptr, \ sizeof(*(ptr))); \ (x) = *(__force __typeof__(*(ptr)) *) &__x; \ break; \ }; \ case 4: { \ - unsigned int __x; \ + unsigned int __x = 0; \ __gu_err = __get_user_fn(&__x, ptr, \ sizeof(*(ptr))); \ (x) = *(__force __typeof__(*(ptr)) *) &__x; \ break; \ }; \ case 8: { \ - unsigned long long __x; \ + unsigned long long __x = 0; \ __gu_err = __get_user_fn(&__x, ptr, \ sizeof(*(ptr))); \ (x) = *(__force __typeof__(*(ptr)) *) &__x; \ -- cgit v0.10.2 From c2f18fa4cbb3ad92e033a24efa27583978ce9600 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 21 Aug 2016 22:13:39 -0400 Subject: score: fix __get_user/get_user * should zero on any failure * __get_user() should use __copy_from_user(), not copy_from_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h index 20a3591..c5d4311 100644 --- a/arch/score/include/asm/uaccess.h +++ b/arch/score/include/asm/uaccess.h @@ -163,7 +163,7 @@ do { \ __get_user_asm(val, "lw", ptr); \ break; \ case 8: \ - if ((copy_from_user((void *)&val, ptr, 8)) == 0) \ + if (__copy_from_user((void *)&val, ptr, 8) == 0) \ __gu_err = 0; \ else \ __gu_err = -EFAULT; \ @@ -188,6 +188,8 @@ do { \ \ if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \ __get_user_common((x), size, __gu_ptr); \ + else \ + (x) = 0; \ \ __gu_err; \ }) @@ -201,6 +203,7 @@ do { \ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3:li %0, %4\n" \ + "li %1, 0\n" \ "j 2b\n" \ ".previous\n" \ ".section __ex_table,\"a\"\n" \ -- cgit v0.10.2 From b615e3c74621e06cd97f86373ca90d43d6d998aa Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 21 Aug 2016 22:30:44 -0400 Subject: score: fix copy_from_user() and friends Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h index c5d4311..01aec8c 100644 --- a/arch/score/include/asm/uaccess.h +++ b/arch/score/include/asm/uaccess.h @@ -301,35 +301,34 @@ extern int __copy_tofrom_user(void *to, const void *from, unsigned long len); static inline unsigned long copy_from_user(void *to, const void *from, unsigned long len) { - unsigned long over; + unsigned long res = len; - if (access_ok(VERIFY_READ, from, len)) - return __copy_tofrom_user(to, from, len); + if (likely(access_ok(VERIFY_READ, from, len))) + res = __copy_tofrom_user(to, from, len); - if ((unsigned long)from < TASK_SIZE) { - over = (unsigned long)from + len - TASK_SIZE; - return __copy_tofrom_user(to, from, len - over) + over; - } - return len; + if (unlikely(res)) + memset(to + (len - res), 0, res); + + return res; } static inline unsigned long copy_to_user(void *to, const void *from, unsigned long len) { - unsigned long over; - - if (access_ok(VERIFY_WRITE, to, len)) - return __copy_tofrom_user(to, from, len); + if (likely(access_ok(VERIFY_WRITE, to, len))) + len = __copy_tofrom_user(to, from, len); - if ((unsigned long)to < TASK_SIZE) { - over = (unsigned long)to + len - TASK_SIZE; - return __copy_tofrom_user(to, from, len - over) + over; - } return len; } -#define __copy_from_user(to, from, len) \ - __copy_tofrom_user((to), (from), (len)) +static inline unsigned long +__copy_from_user(void *to, const void *from, unsigned long len) +{ + unsigned long left = __copy_tofrom_user(to, from, len); + if (unlikely(left)) + memset(to + (len - left), 0, left); + return left; +} #define __copy_to_user(to, from, len) \ __copy_tofrom_user((to), (from), (len)) @@ -343,17 +342,17 @@ __copy_to_user_inatomic(void *to, const void *from, unsigned long len) static inline unsigned long __copy_from_user_inatomic(void *to, const void *from, unsigned long len) { - return __copy_from_user(to, from, len); + return __copy_tofrom_user(to, from, len); } -#define __copy_in_user(to, from, len) __copy_from_user(to, from, len) +#define __copy_in_user(to, from, len) __copy_tofrom_user(to, from, len) static inline unsigned long copy_in_user(void *to, const void *from, unsigned long len) { if (access_ok(VERIFY_READ, from, len) && access_ok(VERFITY_WRITE, to, len)) - return copy_from_user(to, from, len); + return __copy_tofrom_user(to, from, len); } /* -- cgit v0.10.2 From c6852389228df9fb3067f94f3b651de2a7921b36 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 21 Aug 2016 23:33:47 -0400 Subject: sh64: failing __get_user() should zero It could be done in exception-handling bits in __get_user_b() et.al., but the surgery involved would take more knowledge of sh64 details than I have or _want_ to have. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/sh/include/asm/uaccess_64.h b/arch/sh/include/asm/uaccess_64.h index c01376c..ca5073d 100644 --- a/arch/sh/include/asm/uaccess_64.h +++ b/arch/sh/include/asm/uaccess_64.h @@ -24,6 +24,7 @@ #define __get_user_size(x,ptr,size,retval) \ do { \ retval = 0; \ + x = 0; \ switch (size) { \ case 1: \ retval = __get_user_asm_b((void *)&x, \ -- cgit v0.10.2 From 6e050503a150b2126620c1a1e9b3a368fcd51eac Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 21 Aug 2016 23:39:47 -0400 Subject: sh: fix copy_from_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/sh/include/asm/uaccess.h b/arch/sh/include/asm/uaccess.h index a49635c..92ade79 100644 --- a/arch/sh/include/asm/uaccess.h +++ b/arch/sh/include/asm/uaccess.h @@ -151,7 +151,10 @@ copy_from_user(void *to, const void __user *from, unsigned long n) __kernel_size_t __copy_size = (__kernel_size_t) n; if (__copy_size && __access_ok(__copy_from, __copy_size)) - return __copy_user(to, from, __copy_size); + __copy_size = __copy_user(to, from, __copy_size); + + if (unlikely(__copy_size)) + memset(to + (n - __copy_size), 0, __copy_size); return __copy_size; } -- cgit v0.10.2 From 917400cecb4b52b5cde5417348322bb9c8272fa6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 22 Aug 2016 00:23:07 -0400 Subject: sparc32: fix copy_from_user() Cc: stable@vger.kernel.org Acked-by: David S. Miller Signed-off-by: Al Viro diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h index 341a5a1..035c89b 100644 --- a/arch/sparc/include/asm/uaccess_32.h +++ b/arch/sparc/include/asm/uaccess_32.h @@ -269,8 +269,10 @@ static inline unsigned long copy_from_user(void *to, const void __user *from, un if (!__builtin_constant_p(n)) check_object_size(to, n, false); return __copy_user((__force void __user *) to, from, n); - } else + } else { + memset(to, 0, n); return n; + } } static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) -- cgit v0.10.2 From 8f035983dd826d7e04f67b28acf8e2f08c347e41 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 9 Sep 2016 19:16:58 -0400 Subject: blackfin: fix copy_from_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h index 12f5d68..0a2a700 100644 --- a/arch/blackfin/include/asm/uaccess.h +++ b/arch/blackfin/include/asm/uaccess.h @@ -171,11 +171,12 @@ static inline int bad_user_access_length(void) static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { - if (access_ok(VERIFY_READ, from, n)) + if (likely(access_ok(VERIFY_READ, from, n))) { memcpy(to, (const void __force *)from, n); - else - return n; - return 0; + return 0; + } + memset(to, 0, n); + return n; } static inline unsigned long __must_check -- cgit v0.10.2 From c90a3bc5061d57e7931a9b7ad14784e1a0ed497d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 9 Sep 2016 19:20:13 -0400 Subject: m32r: fix __get_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/m32r/include/asm/uaccess.h b/arch/m32r/include/asm/uaccess.h index cac7014..6f89821 100644 --- a/arch/m32r/include/asm/uaccess.h +++ b/arch/m32r/include/asm/uaccess.h @@ -219,7 +219,7 @@ extern int fixup_exception(struct pt_regs *regs); #define __get_user_nocheck(x, ptr, size) \ ({ \ long __gu_err = 0; \ - unsigned long __gu_val; \ + unsigned long __gu_val = 0; \ might_fault(); \ __get_user_size(__gu_val, (ptr), (size), __gu_err); \ (x) = (__force __typeof__(*(ptr)))__gu_val; \ -- cgit v0.10.2 From d0cf385160c12abd109746cad1f13e3b3e8b50b8 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 9 Sep 2016 19:22:34 -0400 Subject: microblaze: fix copy_from_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h index 331b0d3..3a486d3 100644 --- a/arch/microblaze/include/asm/uaccess.h +++ b/arch/microblaze/include/asm/uaccess.h @@ -373,10 +373,13 @@ extern long __user_bad(void); static inline long copy_from_user(void *to, const void __user *from, unsigned long n) { + unsigned long res = n; might_fault(); - if (access_ok(VERIFY_READ, from, n)) - return __copy_from_user(to, from, n); - return n; + if (likely(access_ok(VERIFY_READ, from, n))) + res = __copy_from_user(to, from, n); + if (unlikely(res)) + memset(to + (n - res), 0, res); + return res; } #define __copy_to_user(to, from, n) \ -- cgit v0.10.2 From e98b9e37ae04562d52c96f46b3cf4c2e80222dc1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 9 Sep 2016 19:23:33 -0400 Subject: microblaze: fix __get_user() Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h index 3a486d3..8266767 100644 --- a/arch/microblaze/include/asm/uaccess.h +++ b/arch/microblaze/include/asm/uaccess.h @@ -227,7 +227,7 @@ extern long __user_bad(void); #define __get_user(x, ptr) \ ({ \ - unsigned long __gu_val; \ + unsigned long __gu_val = 0; \ /*unsigned long __gu_ptr = (unsigned long)(ptr);*/ \ long __gu_err; \ switch (sizeof(*(ptr))) { \ -- cgit v0.10.2 From 8630c32275bac2de6ffb8aea9d9b11663e7ad28e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 9 Sep 2016 19:28:23 -0400 Subject: avr32: fix copy_from_user() really ugly, but apparently avr32 compilers turns access_ok() into something so bad that they want it in assembler. Left that way, zeroing added in inline wrapper. Cc: stable@vger.kernel.org Signed-off-by: Al Viro diff --git a/arch/avr32/include/asm/uaccess.h b/arch/avr32/include/asm/uaccess.h index 68cf638..b1ec1fa 100644 --- a/arch/avr32/include/asm/uaccess.h +++ b/arch/avr32/include/asm/uaccess.h @@ -74,7 +74,7 @@ extern __kernel_size_t __copy_user(void *to, const void *from, extern __kernel_size_t copy_to_user(void __user *to, const void *from, __kernel_size_t n); -extern __kernel_size_t copy_from_user(void *to, const void __user *from, +extern __kernel_size_t ___copy_from_user(void *to, const void __user *from, __kernel_size_t n); static inline __kernel_size_t __copy_to_user(void __user *to, const void *from, @@ -88,6 +88,15 @@ static inline __kernel_size_t __copy_from_user(void *to, { return __copy_user(to, (const void __force *)from, n); } +static inline __kernel_size_t copy_from_user(void *to, + const void __user *from, + __kernel_size_t n) +{ + size_t res = ___copy_from_user(to, from, n); + if (unlikely(res)) + memset(to + (n - res), 0, res); + return res; +} #define __copy_to_user_inatomic __copy_to_user #define __copy_from_user_inatomic __copy_from_user diff --git a/arch/avr32/kernel/avr32_ksyms.c b/arch/avr32/kernel/avr32_ksyms.c index d93ead0..7c6cf14 100644 --- a/arch/avr32/kernel/avr32_ksyms.c +++ b/arch/avr32/kernel/avr32_ksyms.c @@ -36,7 +36,7 @@ EXPORT_SYMBOL(copy_page); /* * Userspace access stuff. */ -EXPORT_SYMBOL(copy_from_user); +EXPORT_SYMBOL(___copy_from_user); EXPORT_SYMBOL(copy_to_user); EXPORT_SYMBOL(__copy_user); EXPORT_SYMBOL(strncpy_from_user); diff --git a/arch/avr32/lib/copy_user.S b/arch/avr32/lib/copy_user.S index ea59c04..96a6de9 100644 --- a/arch/avr32/lib/copy_user.S +++ b/arch/avr32/lib/copy_user.S @@ -25,11 +25,11 @@ .align 1 .global copy_from_user .type copy_from_user, @function -copy_from_user: +___copy_from_user: branch_if_kernel r8, __copy_user ret_if_privileged r8, r11, r10, r10 rjmp __copy_user - .size copy_from_user, . - copy_from_user + .size ___copy_from_user, . - ___copy_from_user .global copy_to_user .type copy_to_user, @function -- cgit v0.10.2 From de75abbe0121a6c3c9c6b04c75300088e57ad1d5 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Thu, 8 Sep 2016 11:48:28 +0200 Subject: arm/xen: fix SMP guests boot Commit 88e957d6e47f ("xen: introduce xen_vcpu_id mapping") broke SMP ARM guests on Xen. When FIFO-based event channels are in use (this is the default), evtchn_fifo_alloc_control_block() is called on CPU_UP_PREPARE event and this happens before we set up xen_vcpu_id mapping in xen_starting_cpu. Temporary fix the issue by setting direct Linux CPU id <-> Xen vCPU id mapping for all possible CPUs at boot. We don't currently support kexec/kdump on Xen/ARM so these ids always match. In future, we have several ways to solve the issue, e.g.: - Eliminate all hypercalls from CPU_UP_PREPARE, do them from the starting CPU. This can probably be done for both x86 and ARM and, if done, will allow us to get Xen's idea of vCPU id from CPUID/MPIDR on the starting CPU directly, no messing with ACPI/device tree required. - Save vCPU id information from ACPI/device tree on ARM and use it to initialize xen_vcpu_id mapping. This is the same trick we currently do on x86. Reported-by: Julien Grall Tested-by: Wei Chen Signed-off-by: Vitaly Kuznetsov Acked-by: Stefano Stabellini Signed-off-by: David Vrabel diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 3d2cef6..f193414 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -170,9 +170,6 @@ static int xen_starting_cpu(unsigned int cpu) pr_info("Xen: initializing cpu%d\n", cpu); vcpup = per_cpu_ptr(xen_vcpu_info, cpu); - /* Direct vCPU id mapping for ARM guests. */ - per_cpu(xen_vcpu_id, cpu) = cpu; - info.mfn = virt_to_gfn(vcpup); info.offset = xen_offset_in_page(vcpup); @@ -330,6 +327,7 @@ static int __init xen_guest_init(void) { struct xen_add_to_physmap xatp; struct shared_info *shared_info_page = NULL; + int cpu; if (!xen_domain()) return 0; @@ -380,7 +378,8 @@ static int __init xen_guest_init(void) return -ENOMEM; /* Direct vCPU id mapping for ARM guests. */ - per_cpu(xen_vcpu_id, 0) = 0; + for_each_possible_cpu(cpu) + per_cpu(xen_vcpu_id, cpu) = cpu; xen_auto_xlat_grant_frames.count = gnttab_max_grant_frames(); if (xen_xlate_map_ballooned_pages(&xen_auto_xlat_grant_frames.pfn, -- cgit v0.10.2