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2013-08-22alsa/rme96: Add missing inclusion of linux/vmalloc.hKnut Petersen
Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-22ALSA: rme96: Check the return value of pci_enable_device() in resume callbackTakashi Iwai
Fixing warning message: sound/pci/rme96.c: In function ‘snd_rme96_resume’: sound/pci/rme96.c:2418:19: warning: ignoring return value of ‘pci_enable_device’, declared with attribute warn_unused_result [-Wunused-result] Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-22ALSA: hda - Add workarounds for pop-noise on Chromebook with ALC283Kailang Yang
The headphone automute on this machine triggers annoying pop noises. It seems that only the first DAC can be used, the secondary DAC always results in this problem. This patch disables the secondary DAC with a few additional workarounds. Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-22ALSA: hda - Fix ALC283 headphone pop-noise betterKailang Yang
Fixed ALC283 D3 to D0 and D0 to D3 Headphone pop noise. The previous fix [c5177c86: ALSA: hda - Fix the noise after suspend on ALC283 codec] doesn't work sufficiently for some laptops. Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-22ALSA: rme96: Add PM support v3Knut Petersen
Without proper power management handling, the first use of a Digi96/8 anytime after a suspend / resume cycle will start playback with distortions. v3: Abort if vmalloc() of suspend buffers fail, but do not leak memory in that case. [fixed wrong memory leak fix again -- tiwai] Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: hdspm - Fix SNDRV_HDSPM_IOCTL_GET_LTCAdrian Knoth
Use struct hdspm_ltc to query the LTC, using a mixer struct is just plain wrong. Due to the wrong struct, this ioctl was never working, so we're free to fix it without breaking userspace compatibility. Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: hdspm - Use enums in hdspm_tco_ltc_frames()Adrian Knoth
This patch doesn't change functionality, it only improves readability and fixes a copy&paste error in a comment. Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: hdspm - Fix default value in SNDRV_HDSPM_IOCTL_GET_LTCAdrian Knoth
Use enum hdspm_ltc_format's fps_30 (corresponds to 4) instead of 30, Other case branches return 1, 2 or 3 respectively, so 30 obviously is wrong. Since SNDRV_HDSPM_IOCTL_GET_LTC had never been working due to a copy&paste error in hdspm.h, this change doesn't break userspace. Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: pcm: Use snd_printd_ratelimit()Tim Gardner
The use of snd_printd_ratelimit() supresses superfluous output from printk_ratelimit() when CONFIG_SND_DEBUG is not defined. For example, [ 43.753692] snd_pcm_update_hw_ptr0: 26 callbacks suppressed [ 48.822131] snd_pcm_update_hw_ptr0: 25 callbacks suppressed [ 53.894953] snd_pcm_update_hw_ptr0: 25 callbacks suppressed [ 58.997761] snd_pcm_update_hw_ptr0: 25 callbacks suppressed [ 64.100952] snd_pcm_update_hw_ptr0: 25 callbacks suppressed fills the log even when no debug output is actually produced. Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.de> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Yacine Belkadi <yacine.belkadi.1@gmail.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: pcm: Add snd_printd_ratelimit()Tim Gardner
Direct calls to printk_limit() will emit log noise even when CONFIG_SND_DEBUG is not defined. Add a wrapper macro around printk_limit() that is conditionally defined by CONFIG_SND_DEBUG. Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.de> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Yacine Belkadi <yacine.belkadi.1@gmail.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: hda - Try to allow haswell HDMI audio even without powerwellDavid Henningsson
If compiled without CONFIG_SND_HDA_I915, the audio driver cannot request power well. However, if the power well is on for other reasons, maybe audio can still work. Therefore, do not skip the card completely if compiled without CONFIG_SND_HDA_I915. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-19ALSA: hda - Limit internal mic boost for a few more Thinkpad machinesDavid Henningsson
The higher mic boosts (on internal mic) are so noisy they're unusable in practice. BugLink: https://bugs.launchpad.net/bugs/1213820 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-16ALSA: hda - Fix the order of a quirk table (janitorial)David Henningsson
This just cleans up the table, no functional changes. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-16ALSA: hda - Fix internal mic boost on three Thinkpad machinesDavid Henningsson
The internal mic boost is so noisy on boosts 2 and 3 so they are unusable in practice. BugLink: https://bugs.launchpad.net/bugs/1213055 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-14ALSA: rme96: Add pcm stream synchronizationKnut Petersen
The hardware does support synchronized start/pause/stop of pcm streams, so there is no reason not to add that feature after more than ten years. Some minor coding style / white space fixes in the surroundings of the changes. Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-13ALSA: hda - Mute the right widget in auto_mute_via_amp modeTakashi Iwai
The current generic parser code assumes that always a pin widget controls the mute for an output blindly although it might be a different widget in the middle. Instead of the fixed assumption, check each parsed path and just pick up the right widget that has been already defined as a mute control. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-13ALSA: hda - Allow auto_mute_via_amp on bind mute controlsTakashi Iwai
The auto-mute using the amp currently works only for a single amp on a pin. Make it working also with HDA_CTL_BIND_MUTE type, too. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-12ALSA: compress: update the MAINTAINER entryVinod Koul
add missing uapi/ headers and Documentation files Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-10ALSA: Add MAINTAINERS entry for compressed audio APIMark Brown
Help ensure that Vinod gets included in review of compressed audio patches by adding a MAINTAINERS entry for it. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-09sound: oss/dmabuf: remove an unneeded temporary variableDan Carpenter
We don't actually use the "go" variable so it can be removed. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-08ALSA: don't push static constants on stack for %*phAndy Shevchenko
There is no need to pass constants via stack. The width may be explicitly specified in the format. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: WARN_ON when alts is passed as NULLEldad Zack
Prevent NULL dereference in snd_usb_add_endpoints(), when alts is passed as NULL. In this case, WARN (since this is a non-fatal bug) and return NULL ep. Call sites treat a NULL return value as an error. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: remove implicit_fb from quirkEldad Zack
Since the quirks all apply to implicit feedback (the source endpoint is always a data endpoint), there's no need to set and check a flag for it. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: remove is_playback from implicit feedback quirksEldad Zack
An implicit feedback endpoint can only be a capture source. The consumer (sink) of the implicit feedback endpoint is therefore limited to playback EPs. Check if the target endpoint is a playback first and remove redundant checks. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: do not initialize and check implicit_fbEldad Zack
Since implicit_fb is not changed, !implicit_fb will always be true - it is set only after these checks. Similarly, there's also no need to set it at the top of the function. Change the type of implicit_fb to bool (more appropriate). Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: reverse condition logic in set_sync_endpointEldad Zack
Reverse logic on the conditions required to qualify for a sync endpoint and remove one level of indendation. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: move implicit fb quirks to separate functionEldad Zack
Separate setting implicit feedback quirks from setting a sync endpoint (which may also be explicit feedback or async). Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: separate sync endpoint setting from set_formatEldad Zack
Setting the sync endpoint currently takes up about half of set_format(). Move it to a dedicated function. No functional change. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: remove assignment from if conditionEldad Zack
Following general kernel style. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-06ALSA: usb-audio: remove disabled debug code in set_formatEldad Zack
Code block does not compile when enabled. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-08-05ALSA: hda - Fix jack gating when auto_{mute,mic} is suppressed.Chih-Chung Chang
The snd_hda_jack_set_gating_jack() call didn't work when auto_{mute,mic} is suppressed because (1) am_entry is not filled with nid of the mic pin. (2) The jacks are not created (by snd_hda_jack_detect_enable_callback) before the snd_hda_jack_set_gating_jack call. Now we use the first input pin nid directly, and create the jack if it doesn't exist yet. Signed-off-by: Chih-Chung Chang <chihchung@chromium.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29ALSA: hda - Fix invalid multi-io creation on VAIO-Z laptopsTakashi Iwai
VAIO-Z laptops need to use the specific DAC for the speaker output by some unknown reason although the codec itself supports the flexible connection. So we implemented a workaround by a new flag, no_primary_hp, for assigning the speaker pin first. This worked until 3.8 kernel, but it got broken because the driver learned for a better multi-io pin mapping, and not it can assign two mic pins for multi-io. Since the multi-io requires to be the primary output, the hp and two mic pins are assigned in prior to the speaker in the end. Although the machine has two mic pins, one of them is used as a noise- canceling headphone, thus it's no real retaskable mic jack. Thus, at best, we can disable the multi-io assignment and make the parser behavior back to the state before the multi-io. This patch adds again a new flag, no_multi_io, to indicate that the device has no multi-io capability, and set it in the fixup for VAIO-Z. The no_multi_io flag itself can be used generically, added via a helper line, too. Reported-by: Tormen <my.nl.abos@gmail.com> Reported-by: Adam Williamson <awilliam@redhat.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29ALSA: hda - Remove analog mic pin override from STAC9228 dell-bios quirkTakashi Iwai
The current fixup for dell-bios model with STAC9228 codec contains the override of pin 0x0c for analog mic. But this is actually just adding a bogus pin and confuses the parser. Better to remove it for the auto-mic switching. Meanwhile, for a possible regression, keep the old configuration as model=dell-bios-amic, so that people can test it again quickly. Tested on Dell 1420n laptop. Reported-and-tested-by: Eric Shattow <lucent@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29ALSA: hda - WAKEEN feature enabling for runtime pmWang Xingchao
With runtime power save feature enabled, Headphone hotplug event will not be detected while controller/codec in D3. HDA has feature WAKEEN to let codec wake up system if controller is in D3 or system in S3.(HDA Spec 4.5.9.2/3). Codec can send out INT or wake up controller depending on whether CIE or GIE enabled.(Figure 4, Interupt structure). The controller must be in RESET mode after enter runtime-suspend, otherwise it will not be waken up even if codec send out wake-up event. And STATESTS will be cleared after controller brought out of RESET mode. This patch only enable WAKEEN for runtime-suspend(Controller D3) mode, not for system S3 mode. with tool "evtest", Headphone hotplug events could be cought and reported successfully. [fixed an unused variable warning by tiwai] Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29ALSA: hda - jack poll once if jackpoll_interval==0Wang Xingchao
With jackpoll_interval != 0, it's used to poll jack event periodically in a delayed work. if it's 0, give the caller chance to probe jack status but will not restart the delayed work. In the next patch which enable WAKEEN feature, HDA controller was able to wake up system when it's in D3, it's useful to detect Jack hotplug event and notify userspace. By default the jackpoll_interval=0, this patch let jack poll once without starting the delayed work. Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29ALSA: hda - Clearing jackpoll_interval avoid pending workWang Xingchao
Clearing jackpoll_interval before calling cancel_delayed_work_sync(), otherwise the work will be triggered again and cause impact in hda_jackpoll_work(). The next patch will poll jack once even with jackpoll_interval=0. Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-29ALSA: usx2y: remove an unneeded checkDan Carpenter
The test here is always true because S[i].urb is an array not a pointer. Also it's bogus because the intent was to test: if (S->urb[i]) { instead of: if (S[i].urb) { Anyway, usb_kill_urb() and usb_free_urb() accept NULL pointers so we can just remove this. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-24ALSA: hda - use azx_writew() for 16-bit length registerWang Xingchao
Register STATESTS is 16-bit length, use correct API for read/write. Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-24ALSA: hda - Fix the noise after suspend on ALC283 codecKailang Yang
When the power state of ALC283 codec goes to D3, it gives a noise via headphone output. This is because the driver tries to clear all pins via snd_hda_shutup_pins(). Setting the mic pin to zero triggers such a noise. Define a new shutup call specific to this codec and control the pins there more precisely. Also, add the power-save enable/disable sequences in the resume and the new shutup calls. Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-24ALSA: hda/realtek - Selectively call snd_hda_shutup_pins()Takashi Iwai
Instead of calling snd_hda_shutup_pins() unconditionally, allow it be called in spec->shutup callback. In this way, we can avoid calling this function if it causes a problem like we see in the next patch following this. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-21ALSA: replace strict_strto*() with kstrto*()Jingoo Han
The usage of strict_strto*() is not preferred, because strict_strto*() is obsolete. Thus, kstrto*() should be used. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-21ALSA: hda - Add snd_hda_jack_detect_state() helper functionTakashi Iwai
snd_hda_jack_detect() function returns a boolean value for a jack plugged in or not, but it also returns always true when the corresponding pin is phantom (i.e. fixed). This is OK in most cases, but it makes the generic parser misbehaving about the auto-mute or auto-mic switching, e.g. when one of headphone pins is a fixed. Namely, the driver decides whether to mute the speaker or not, just depending on the headphone plug state: if one of the headphone jacks is seen as active, then the speaker is muted. Thus this will result always in the muted speaker output. So, the problem is the function returns a boolean, after all, although we need to think of "phantom" jack. Now a new function, snd_hda_jack_detect_state() is introduced to return these tristates. The generic parser uses this function for checking the headphone or mic jack states. Meanwhile, the behavior of snd_hda_jack_detect() is kept as is, for keeping compatibility in other driver codes. Acked-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-16ALSA: hda - Headphone mic support for an Asus/Conexant deviceDavid Henningsson
This Conexant codec has a single jack that can be used as either headphone or mic (but not headset). The existing hp_mic functionality does not apply here, because the mic and the HP are on separate pins. Hence make a lighter version of what has been earlier done for Realtek codecs. BugLink: https://bugs.launchpad.net/bugs/1198030 Tested-by: Franz Hsieh <franz.hsieh@canonical.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-15ALSA: hdspm - remove unneeded semicolonFengguang Wu
sound/pci/rme9652/hdspm.c:1110:2-3: Unneeded semicolon Generated by: coccinelle/misc/semicolon.cocci Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-15Merge branch 'for-3.12' into for-nextTakashi Iwai
2013-07-14Linux 3.11-rc1Linus Torvalds
2013-07-14Merge branch 'slab/for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux Pull slab update from Pekka Enberg: "Highlights: - Fix for boot-time problems on some architectures due to init_lock_keys() not respecting kmalloc_caches boundaries (Christoph Lameter) - CONFIG_SLUB_CPU_PARTIAL requested by RT folks (Joonsoo Kim) - Fix for excessive slab freelist draining (Wanpeng Li) - SLUB and SLOB cleanups and fixes (various people)" I ended up editing the branch, and this avoids two commits at the end that were immediately reverted, and I instead just applied the oneliner fix in between myself. * 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux slub: Check for page NULL before doing the node_match check mm/slab: Give s_next and s_stop slab-specific names slob: Check for NULL pointer before calling ctor() slub: Make cpu partial slab support configurable slab: add kmalloc() to kernel API documentation slab: fix init_lock_keys slob: use DIV_ROUND_UP where possible slub: do not put a slab to cpu partial list when cpu_partial is 0 mm/slub: Use node_nr_slabs and node_nr_objs in get_slabinfo mm/slub: Drop unnecessary nr_partials mm/slab: Fix /proc/slabinfo unwriteable for slab mm/slab: Sharing s_next and s_stop between slab and slub mm/slab: Fix drain freelist excessively slob: Rework #ifdeffery in slab.h mm, slab: moved kmem_cache_alloc_node comment to correct place
2013-07-14slub: Check for page NULL before doing the node_match checkSteven Rostedt
In the -rt kernel (mrg), we hit the following dump: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180 PGD a2d39067 PUD b1641067 PMD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: sunrpc cpufreq_ondemand ipv6 tg3 joydev sg serio_raw pcspkr k8temp amd64_edac_mod edac_core i2c_piix4 e100 mii shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom sata_svw ata_generic pata_acpi pata_serverworks radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod CPU 3 Pid: 20878, comm: hackbench Not tainted 3.6.11-rt25.14.el6rt.x86_64 #1 empty empty/Tyan Transport GT24-B3992 RIP: 0010:[<ffffffff811573f1>] [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180 RSP: 0018:ffff8800a9b17d70 EFLAGS: 00010213 RAX: 0000000000000000 RBX: 0000000001200011 RCX: ffff8800a06d8000 RDX: 0000000004d92a03 RSI: 00000000000000d0 RDI: ffff88013b805500 RBP: ffff8800a9b17dc0 R08: ffff88023fd14d10 R09: ffffffff81041cbd R10: 00007f4e3f06e9d0 R11: 0000000000000246 R12: ffff88013b805500 R13: ffff8801ff46af40 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f4e3f06e700(0000) GS:ffff88023fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000000 CR3: 00000000a2d3a000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process hackbench (pid: 20878, threadinfo ffff8800a9b16000, task ffff8800a06d8000) Stack: ffff8800a9b17da0 ffffffff81202e08 ffff8800a9b17de0 000000d001200011 0000000001200011 0000000001200011 0000000000000000 0000000000000000 00007f4e3f06e9d0 0000000000000000 ffff8800a9b17e60 ffffffff81041cbd Call Trace: [<ffffffff81202e08>] ? current_has_perm+0x68/0x80 [<ffffffff81041cbd>] copy_process+0xdd/0x15b0 [<ffffffff810a2125>] ? rt_up_read+0x25/0x30 [<ffffffff8104369a>] do_fork+0x5a/0x360 [<ffffffff8107c66b>] ? migrate_enable+0xeb/0x220 [<ffffffff8100b068>] sys_clone+0x28/0x30 [<ffffffff81527423>] stub_clone+0x13/0x20 [<ffffffff81527152>] ? system_call_fastpath+0x16/0x1b Code: 89 fc 89 75 cc 41 89 d6 4d 8b 04 24 65 4c 03 04 25 48 ae 00 00 49 8b 50 08 4d 8b 28 49 8b 40 10 4d 85 ed 74 12 41 83 fe ff 74 27 <48> 8b 00 48 c1 e8 3a 41 39 c6 74 1b 8b 75 cc 4c 89 c9 44 89 f2 RIP [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180 RSP <ffff8800a9b17d70> CR2: 0000000000000000 ---[ end trace 0000000000000002 ]--- Now, this uses SLUB pretty much unmodified, but as it is the -rt kernel with CONFIG_PREEMPT_RT set, spinlocks are mutexes, although they do disable migration. But the SLUB code is relatively lockless, and the spin_locks there are raw_spin_locks (not converted to mutexes), thus I believe this bug can happen in mainline without -rt features. The -rt patch is just good at triggering mainline bugs ;-) Anyway, looking at where this crashed, it seems that the page variable can be NULL when passed to the node_match() function (which does not check if it is NULL). When this happens we get the above panic. As page is only used in slab_alloc() to check if the node matches, if it's NULL I'm assuming that we can say it doesn't and call the __slab_alloc() code. Is this a correct assumption? Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more vfs stuff from Al Viro: "O_TMPFILE ABI changes, Oleg's fput() series, misc cleanups, including making simple_lookup() usable for filesystems with non-NULL s_d_op, which allows us to get rid of quite a bit of ugliness" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: sunrpc: now we can just set ->s_d_op cgroup: we can use simple_lookup() now efivarfs: we can use simple_lookup() now make simple_lookup() usable for filesystems that set ->s_d_op configfs: don't open-code d_alloc_name() __rpc_lookup_create_exclusive: pass string instead of qstr rpc_create_*_dir: don't bother with qstr llist: llist_add() can use llist_add_batch() llist: fix/simplify llist_add() and llist_add_batch() fput: turn "list_head delayed_fput_list" into llist_head fs/file_table.c:fput(): add comment Safer ABI for O_TMPFILE
2013-07-14sunrpc: now we can just set ->s_d_opAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>