summaryrefslogtreecommitdiff
path: root/drivers
AgeCommit message (Collapse)Author
2017-04-12brcmfmac: use local iftype avoiding use-after-free of virtual interfaceArend Van Spriel
commit d77facb88448cdeaaa3adba5b9704a48ac2ac8d6 upstream. A use-after-free was found using KASAN. In brcmf_p2p_del_if() the virtual interface is removed using call to brcmf_remove_interface(). After that the virtual interface instance has been freed and should not be referenced. Solve this by storing the nl80211 iftype in local variable, which is used in a couple of places anyway. Reported-by: Daniel J Blueman <daniel@quora.org> Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com> Reviewed-by: Franky Lin <franky.lin@broadcom.com> Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12ACPI / gpio: do not fall back to parsing _CRS when we get a deferralDmitry Torokhov
commit 693bdaa164b40b7aa6018b98af6f7e40dbd52457 upstream. If, while locating GPIOs by name, we get probe deferral, we should immediately report it to caller rather than trying to fall back to parsing unnamed GPIOs from _CRS block. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-and-Tested-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12dm verity fec: fix bufio leaksSami Tolvanen
commit 86e3e83b443669dd2bcc5c8a83b23e3aa0694c0d upstream. Buffers read through dm_bufio_read() were not released in all code paths. Fixes: a739ff3f543a ("dm verity: add support for forward error correction") Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12dm verity fec: limit error correction recursionSami Tolvanen
commit f1a880a93baaadb14c10a348fd199f1cdb6bcccd upstream. If the hash tree itself is sufficiently corrupt in addition to data blocks, it's possible for error correction to end up in a deep recursive loop, which eventually causes a kernel panic. This change limits the recursion to a reasonable level during a single I/O operation. Fixes: a739ff3f543a ("dm verity: add support for forward error correction") Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12iio: bmg160: reset chip when probingQuentin Schulz
commit 4bdc9029685ac03be50b320b29691766d2326c2b upstream. The gyroscope chip might need to be reset to be used. Without the chip being reset, the driver stopped at the first regmap_read (to get the CHIP_ID) and failed to probe. The datasheet of the gyroscope says that a minimum wait of 30ms after the reset has to be done. This patch has been checked on a BMX055 and the datasheet of the BMG160 and the BMI055 give the same reset register and bits. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12staging: android: ashmem: lseek failed due to no FMODE_LSEEK.Shuxiao Zhang
commit 97fbfef6bd597888485b653175fb846c6998b60c upstream. vfs_llseek will check whether the file mode has FMODE_LSEEK, no return failure. But ashmem can be lseek, so add FMODE_LSEEK to ashmem file. Comment From Greg Hackmann: ashmem_llseek() passes the llseek() call through to the backing shmem file. 91360b02ab48 ("ashmem: use vfs_llseek()") changed this from directly calling the file's llseek() op into a VFS layer call. This also adds a check for the FMODE_LSEEK bit, so without that bit ashmem_llseek() now always fails with -ESPIPE. Fixes: 91360b02ab48 ("ashmem: use vfs_llseek()") Signed-off-by: Shuxiao Zhang <zhangshuxiao@xiaomi.com> Tested-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()Li Qiang
commit e7e11f99564222d82f0ce84bd521e57d78a6b678 upstream. In vmw_surface_define_ioctl(), the 'num_sizes' is the sum of the 'req->mip_levels' array. This array can be assigned any value from the user space. As both the 'num_sizes' and the array is uint32_t, it is easy to make 'num_sizes' overflow. The later 'mip_levels' is used as the loop count. This can lead an oob write. Add the check of 'req->mip_levels' to avoid this. Signed-off-by: Li Qiang <liqiang6-s@360.cn> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12drm/vmwgfx: Remove getparam error messageThomas Hellstrom
commit 53e16798b0864464c5444a204e1bb93ae246c429 upstream. The mesa winsys sometimes uses unimplemented parameter requests to check for features. Remove the error message to avoid bloating the kernel log. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12drm/ttm, drm/vmwgfx: Relax permission checking when opening surfacesThomas Hellstrom
commit fe25deb7737ce6c0879ccf79c99fa1221d428bf2 upstream. Previously, when a surface was opened using a legacy (non prime) handle, it was verified to have been created by a client in the same master realm. Relax this so that opening is also allowed recursively if the client already has the surface open. This works around a regression in svga mesa where opening of a shared surface is used recursively to obtain surface information. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()Murray McAllister
commit 63774069d9527a1aeaa4aa20e929ef5e8e9ecc38 upstream. In vmw_get_cap_3d_ioctl(), a user can supply 0 for a size that is used in vzalloc(). This eventually calls dump_stack() (in warn_alloc()), which can leak useful addresses to dmesg. Add check to avoid a size of 0. Signed-off-by: Murray McAllister <murray.mcallister@insomniasec.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()Murray McAllister
commit 36274ab8c596f1240c606bb514da329add2a1bcd upstream. Before memory allocations vmw_surface_define_ioctl() checks the upper-bounds of a user-supplied size, but does not check if the supplied size is 0. Add check to avoid NULL pointer dereferences. Signed-off-by: Murray McAllister <murray.mcallister@insomniasec.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12drm/vmwgfx: Type-check lookups of fence objectsThomas Hellstrom
commit f7652afa8eadb416b23eb57dec6f158529942041 upstream. A malicious caller could otherwise hand over handles to other objects causing all sorts of interesting problems. Testing done: Ran a Fedora 25 desktop using both Xorg and gnome-shell/Wayland. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12ppdev: fix registering same device nameSudip Mukherjee
commit 9a69645dde1188723d80745c1bc6ee9af2cbe2a7 upstream. Usually every parallel port will have a single pardev registered with it. But ppdev driver is an exception. This userspace parallel port driver allows to create multiple parrallel port devices for a single parallel port. And as a result we were having a big warning like: "sysfs: cannot create duplicate filename '/devices/parport0/ppdev0.0'". And with that many parallel port printers stopped working. We have been using the minor number as the id field while registering a parralel port device with a parralel port. But when there are multiple parrallel port device for one single parallel port, they all tried to register with the same name like 'pardev0.0' and everything started failing. Use an incremented index as the id instead of the minor number. Fixes: 8b7d3a9d903e ("ppdev: use new parport device model") Cc: stable <stable@vger.kernel.org> # v4.9+ Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1414656 Bugzilla: https://bugs.archlinux.org/task/52322 Tested-by: James Feeney <james@nurealm.net> Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-12ppdev: check before attaching portSudip Mukherjee
commit dd5c472a60e43549d789a17a8444513eec64bd7e upstream. After parport starts using the device model, all pardevice drivers should decide in their match_port callback function if they want to attach with that particulatr port. ppdev has been converted to use the new parport device-model code but pp_attach() tried to attach with all the ports. Create a new array of pointer and use that to remember the ports we have attached. And use that information to skip attaching ports which we have already attached. Tested-by: Joe Lawrence <joe.lawrence@redhat.com> Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08nvme/pci: Disable on removal when disconnectedKeith Busch
commit 6db28eda266052f86a6b402422de61eeb7d2e351 upstream. If the device is not present, the driver should disable the queues immediately. Prior to this, the driver was relying on the watchdog timer to kill the queues if requests were outstanding to the device, and that just delays removal up to one second. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08nvme/core: Fix race kicking freed request_queueKeith Busch
commit f33447b90e96076483525b21cc4e0a8977cdd07c upstream. If a namespace has already been marked dead, we don't want to kick the request_queue again since we may have just freed it from another thread. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08blk: Ensure users for current->bio_list can see the full list.NeilBrown
commit f5fe1b51905df7cfe4fdfd85c5fb7bc5b71a094f upstream. Commit 79bd99596b73 ("blk: improve order of bio handling in generic_make_request()") changed current->bio_list so that it did not contain *all* of the queued bios, but only those submitted by the currently running make_request_fn. There are two places which walk the list and requeue selected bios, and others that check if the list is empty. These are no longer correct. So redefine current->bio_list to point to an array of two lists, which contain all queued bios, and adjust various code to test or walk both lists. Signed-off-by: NeilBrown <neilb@suse.com> Fixes: 79bd99596b73 ("blk: improve order of bio handling in generic_make_request()") Signed-off-by: Jens Axboe <axboe@fb.com> Cc: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08qla2xxx: Allow vref count to timeout on vport delete.Joe Carnuccio
commit c4a9b538ab2a109c5f9798bea1f8f4bf93aadfb9 upstream. Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08drm/etnaviv: (re-)protect fence allocation with GPU mutexLucas Stach
commit f3cd1b064f1179d9e6188c6d67297a2360880e10 upstream. The fence allocation needs to be protected by the GPU mutex, otherwise the fence seqnos of concurrent submits might not match the insertion order of the jobs in the kernel ring. This breaks the assumption that jobs complete with monotonically increasing fence seqnos. Fixes: d9853490176c (drm/etnaviv: take GPU lock later in the submit process) Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08drm/vc4: Allocate the right amount of space for boot-time CRTC state.Eric Anholt
commit 6d6e500391875cc372336c88e9a8af377be19c36 upstream. Without this, the first modeset would dereference past the allocation when trying to free the mm node. Signed-off-by: Eric Anholt <eric@anholt.net> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170328201343.4884-1-eric@anholt.net Fixes: d8dbf44f13b9 ("drm/vc4: Make the CRTCs cooperate on allocating display lists.") Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08drm/radeon: Override fpfn for all VRAM placements in radeon_evict_flagsMichel Dänzer
commit ce4b4f228e51219b0b79588caf73225b08b5b779 upstream. We were accidentally only overriding the first VRAM placement. For BOs with the RADEON_GEM_NO_CPU_ACCESS flag set, radeon_ttm_placement_from_domain creates a second VRAM placment with fpfn == 0. If VRAM is almost full, the first VRAM placement with fpfn > 0 may not work, but the second one with fpfn == 0 always will (the BO's current location trivially satisfies it). Because "moving" the BO to its current location puts it back on the LRU list, this results in an infinite loop. Fixes: 2a85aedd117c ("drm/radeon: Try evicting from CPU accessible to inaccessible VRAM first") Reported-by: Zachary Michaels <zmichaels@oblong.com> Reported-and-Tested-by: Julien Isorce <jisorce@oblong.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08serial: mxs-auart: Fix baudrate calculationUwe Kleine-König
commit a6040bc610554c66088fda3608ae5d6307c548e4 upstream. The reference manual for the i.MX28 recommends to calculate the divisor as divisor = (UARTCLK * 32) / baud rate, rounded to the nearest integer , so let's do this. For a typical setup of UARTCLK = 24 MHz and baud rate = 115200 this changes the divisor from 6666 to 6667 and so the actual baud rate improves from 115211.521 Bd (error ≅ 0.01 %) to 115194.240 Bd (error ≅ 0.005 %). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08USB: fix linked-list corruption in rh_call_control()Alan Stern
commit 1633682053a7ee8058e10c76722b9b28e97fb73f upstream. Using KASAN, Dmitry found a bug in the rh_call_control() routine: If buffer allocation fails, the routine returns immediately without unlinking its URB from the control endpoint, eventually leading to linked-list corruption. This patch fixes the problem by jumping to the end of the routine (where the URB is unlinked) when an allocation failure occurs. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08tty/serial: atmel: fix TX path in atmel_console_write()Nicolas Ferre
commit 497e1e16f45c70574dc9922c7f75c642c2162119 upstream. A side effect of 89d8232411a8 ("tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx") is that the console can be called with TX path disabled. Then the system would hang trying to push charecters out in atmel_console_putchar(). Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> Fixes: 89d8232411a8 ("tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08tty/serial: atmel: fix race condition (TX+DMA)Richard Genoud
commit 31ca2c63fdc0aee725cbd4f207c1256f5deaabde upstream. If uart_flush_buffer() is called between atmel_tx_dma() and atmel_complete_tx_dma(), the circular buffer has been cleared, but not atmel_port->tx_len. That leads to a circular buffer overflow (dumping (UART_XMIT_SIZE - atmel_port->tx_len) bytes). Tested-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08ACPI: Do not create a platform_device for IOAPIC/IOxAPICJoerg Roedel
commit 08f63d97749185fab942a3a47ed80f5bd89b8b7d upstream. No platform-device is required for IO(x)APICs, so don't even create them. [ rjw: This fixes a problem with leaking platform device objects after IOAPIC/IOxAPIC hot-removal events.] Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08ACPI: Fix incompatibility with mcount-based function graph tracingJosh Poimboeuf
commit 61b79e16c68d703dde58c25d3935d67210b7d71b upstream. Paul Menzel reported a warning: WARNING: CPU: 0 PID: 774 at /build/linux-ROBWaj/linux-4.9.13/kernel/trace/trace_functions_graph.c:233 ftrace_return_to_handler+0x1aa/0x1e0 Bad frame pointer: expected f6919d98, received f6919db0 from func acpi_pm_device_sleep_wake return to c43b6f9d The warning means that function graph tracing is broken for the acpi_pm_device_sleep_wake() function. That's because the ACPI Makefile unconditionally sets the '-Os' gcc flag to optimize for size. That's an issue because mcount-based function graph tracing is incompatible with '-Os' on x86, thanks to the following gcc bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42109 I have another patch pending which will ensure that mcount-based function graph tracing is never used with CONFIG_CC_OPTIMIZE_FOR_SIZE on x86. But this patch is needed in addition to that one because the ACPI Makefile overrides that config option for no apparent reason. It has had this flag since the beginning of git history, and there's no related comment, so I don't know why it's there. As far as I can tell, there's no reason for it to be there. The appropriate behavior is for it to honor CONFIG_CC_OPTIMIZE_FOR_{SIZE,PERFORMANCE} like the rest of the kernel. Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08mmc: sdhci-of-at91: fix MMC_DDR_52 timing selectionLudovic Desroches
commit d0918764c17b94c30bbb2619929b1719ff52707a upstream. The controller has different timings for MMC_TIMING_UHS_DDR50 and MMC_TIMING_MMC_DDR52. Configuring the controller with SDHCI_CTRL_UHS_DDR50, when MMC_TIMING_MMC_DDR52 timings are requested, is not correct and can lead to unexpected behavior. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Fixes: bb5f8ea4d514 ("mmc: sdhci-of-at91: introduce driver for the Atmel SDMMC") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08mmc: sdhci: Disable runtime pm when the sdio_irq is enabledHans de Goede
commit 923713b357455cfb9aca2cd3429cb0806a724ed2 upstream. SDIO cards may need clock to send the card interrupt to the host. On a cherrytrail tablet with a RTL8723BS wifi chip, without this patch pinging the tablet results in: PING 192.168.1.14 (192.168.1.14) 56(84) bytes of data. 64 bytes from 192.168.1.14: icmp_seq=1 ttl=64 time=78.6 ms 64 bytes from 192.168.1.14: icmp_seq=2 ttl=64 time=1760 ms 64 bytes from 192.168.1.14: icmp_seq=3 ttl=64 time=753 ms 64 bytes from 192.168.1.14: icmp_seq=4 ttl=64 time=3.88 ms 64 bytes from 192.168.1.14: icmp_seq=5 ttl=64 time=795 ms 64 bytes from 192.168.1.14: icmp_seq=6 ttl=64 time=1841 ms 64 bytes from 192.168.1.14: icmp_seq=7 ttl=64 time=810 ms 64 bytes from 192.168.1.14: icmp_seq=8 ttl=64 time=1860 ms 64 bytes from 192.168.1.14: icmp_seq=9 ttl=64 time=812 ms 64 bytes from 192.168.1.14: icmp_seq=10 ttl=64 time=48.6 ms Where as with this patch I get: PING 192.168.1.14 (192.168.1.14) 56(84) bytes of data. 64 bytes from 192.168.1.14: icmp_seq=1 ttl=64 time=3.96 ms 64 bytes from 192.168.1.14: icmp_seq=2 ttl=64 time=1.97 ms 64 bytes from 192.168.1.14: icmp_seq=3 ttl=64 time=17.2 ms 64 bytes from 192.168.1.14: icmp_seq=4 ttl=64 time=2.46 ms 64 bytes from 192.168.1.14: icmp_seq=5 ttl=64 time=2.83 ms 64 bytes from 192.168.1.14: icmp_seq=6 ttl=64 time=1.40 ms 64 bytes from 192.168.1.14: icmp_seq=7 ttl=64 time=2.10 ms 64 bytes from 192.168.1.14: icmp_seq=8 ttl=64 time=1.40 ms 64 bytes from 192.168.1.14: icmp_seq=9 ttl=64 time=2.04 ms 64 bytes from 192.168.1.14: icmp_seq=10 ttl=64 time=1.40 ms Cc: Dong Aisheng <b29396@freescale.com> Cc: Ian W MORRISON <ianwmorrison@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08HID: wacom: Don't add ghost interface as shared dataAaron Armstrong Skomra
commit 8b4073596997f2ccbf68d8e72e07b827388a4536 upstream. A previous commit (below) adds a check for already probed interfaces to Wacom's matching heuristic. Unfortunately this causes the Bamboo Pen (CTL-460) to match itself to its 'ghost' touch interface. After subsequent changes to the driver this match to the ghost causes the kernel to crash. This patch avoids calling wacom_add_shared_data() for the BAMBOO_PEN's ghost touch interface. Fixes: 41372d5d40e7 ("HID: wacom: Augment 'oVid' and 'oPid' with heuristics for HID_GENERIC") Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08PCI: iproc: Save host bridge window resource in struct iproc_pcieBjorn Helgaas
commit 6e347b5e05ea2ac4ac467a5a1cfaebb2c7f06f80 upstream. The host bridge memory window resource is inserted into the iomem_resource tree and cannot be deallocated until the host bridge itself is removed. Previously, the window was on the stack, which meant the iomem_resource entry pointed into the stack and was corrupted as soon as the probe function returned, which caused memory corruption and errors like this: pcie_iproc_bcma bcma0:8: resource collision: [mem 0x40000000-0x47ffffff] conflicts with PCIe MEM space [mem 0x40000000-0x47ffffff] Move the memory window resource from the stack into struct iproc_pcie so its lifetime matches that of the host bridge. Fixes: c3245a566400 ("PCI: iproc: Request host bridge window resources") Reported-and-tested-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08scsi: scsi_dh_alua: Ensure that alua_activate() calls the completion functionBart Van Assche
commit 7cb689fe42927281b8d98606ae5450173fcc66a9 upstream. Callers of scsi_dh_activate(), e.g. dm-mpath, assume that this function either returns an error code or calls the completion function. Make alua_activate() call the completion function even if scsi_device_get() fails. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Tang Junhui <tang.junhui@zte.com.cn> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08scsi: scsi_dh_alua: Check scsi_device_get() return valueBart Van Assche
commit 625fe857e4fac6518716f3c0ff5e5deb8ec6d238 upstream. Do not queue ALUA work nor call scsi_device_put() if the scsi_device_get() call fails. This patch fixes the following crash: general protection fault: 0000 [#1] SMP RIP: 0010:scsi_device_put+0xb/0x30 Call Trace: scsi_disk_put+0x2d/0x40 sd_release+0x3d/0xb0 __blkdev_put+0x29e/0x360 blkdev_put+0x49/0x170 dm_put_table_device+0x58/0xc0 [dm_mod] dm_put_device+0x70/0xc0 [dm_mod] free_priority_group+0x92/0xc0 [dm_multipath] free_multipath+0x70/0xc0 [dm_multipath] multipath_dtr+0x19/0x20 [dm_multipath] dm_table_destroy+0x67/0x120 [dm_mod] dev_suspend+0xde/0x240 [dm_mod] ctl_ioctl+0x1f5/0x520 [dm_mod] dm_ctl_ioctl+0xe/0x20 [dm_mod] do_vfs_ioctl+0x8f/0x700 SyS_ioctl+0x3c/0x70 entry_SYSCALL_64_fastpath+0x18/0xad Fixes: commit 03197b61c5ec ("scsi_dh_alua: Use workqueue for RTPG") Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Tang Junhui <tang.junhui@zte.com.cn> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08scsi: libsas: fix ata xfer lengthJohn Garry
commit 9702c67c6066f583b629cf037d2056245bb7a8e6 upstream. The total ata xfer length may not be calculated properly, in that we do not use the proper method to get an sg element dma length. According to the code comment, sg_dma_len() should be used after dma_map_sg() is called. This issue was found by turning on the SMMUv3 in front of the hisi_sas controller in hip07. Multiple sg elements were being combined into a single element, but the original first element length was being use as the total xfer length. Fixes: ff2aeb1eb64c8a4770a6 ("libata: convert to chained sg") Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08scsi: sg: check length passed to SG_NEXT_CMD_LENpeter chang
commit bf33f87dd04c371ea33feb821b60d63d754e3124 upstream. The user can control the size of the next command passed along, but the value passed to the ioctl isn't checked against the usable max command size. Signed-off-by: Peter Chang <dpf@google.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-31usb: musb: fix possible spinlock deadlockBin Liu
commit bc1e2154542071e3cfe1734b143af9b8bdacf8bd upstream. The DSPS glue calls del_timer_sync() in its musb_platform_disable() implementation, which requires the caller to not hold a lock. But musb_remove() calls musb_platform_disable() will musb->lock held. This could causes spinlock deadlock. So change musb_remove() to call musb_platform_disable() without holds musb->lock. This doesn't impact the musb_platform_disable implementation in other glue drivers. root@am335x-evm:~# modprobe -r musb-dsps [ 126.134879] musb-hdrc musb-hdrc.1: remove, state 1 [ 126.140465] usb usb2: USB disconnect, device number 1 [ 126.146178] usb 2-1: USB disconnect, device number 2 [ 126.416985] musb-hdrc musb-hdrc.1: USB bus 2 deregistered [ 126.423943] [ 126.425525] ====================================================== [ 126.431997] [ INFO: possible circular locking dependency detected ] [ 126.438564] 4.11.0-rc1-00003-g1557f13bca04-dirty #77 Not tainted [ 126.444852] ------------------------------------------------------- [ 126.451414] modprobe/778 is trying to acquire lock: [ 126.456523] (((&glue->timer))){+.-...}, at: [<c01b8788>] del_timer_sync+0x0/0xd0 [ 126.464403] [ 126.464403] but task is already holding lock: [ 126.470511] (&(&musb->lock)->rlock){-.-...}, at: [<bf30b7f8>] musb_remove+0x50/0x1 30 [musb_hdrc] [ 126.479965] [ 126.479965] which lock already depends on the new lock. [ 126.479965] [ 126.488531] [ 126.488531] the existing dependency chain (in reverse order) is: [ 126.496368] [ 126.496368] -> #1 (&(&musb->lock)->rlock){-.-...}: [ 126.502968] otg_timer+0x80/0xec [musb_dsps] [ 126.507990] call_timer_fn+0xb4/0x390 [ 126.512372] expire_timers+0xf0/0x1fc [ 126.516754] run_timer_softirq+0x80/0x178 [ 126.521511] __do_softirq+0xc4/0x554 [ 126.525802] irq_exit+0xe8/0x158 [ 126.529735] __handle_domain_irq+0x58/0xb8 [ 126.534583] __irq_usr+0x54/0x80 [ 126.538507] [ 126.538507] -> #0 (((&glue->timer))){+.-...}: [ 126.544636] del_timer_sync+0x40/0xd0 [ 126.549066] musb_remove+0x6c/0x130 [musb_hdrc] [ 126.554370] platform_drv_remove+0x24/0x3c [ 126.559206] device_release_driver_internal+0x14c/0x1e0 [ 126.565225] bus_remove_device+0xd8/0x108 [ 126.569970] device_del+0x1e4/0x308 [ 126.574170] platform_device_del+0x24/0x8c [ 126.579006] platform_device_unregister+0xc/0x20 [ 126.584394] dsps_remove+0x14/0x30 [musb_dsps] [ 126.589595] platform_drv_remove+0x24/0x3c [ 126.594432] device_release_driver_internal+0x14c/0x1e0 [ 126.600450] driver_detach+0x38/0x6c [ 126.604740] bus_remove_driver+0x4c/0xa0 [ 126.609407] SyS_delete_module+0x11c/0x1e4 [ 126.614252] __sys_trace_return+0x0/0x10 Fixes: ea2f35c01d5ea ("usb: musb: Fix sleeping function called from invalid context for hdrc glue") Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-31pinctrl: qcom: Don't clear status bit on irq_unmaskBjorn Andersson
commit a6566710adaa4a7dd5e0d99820ff9c9c30ee5951 upstream. Clearing the status bit on irq_unmask will discard any pending interrupt that did arrive after the irq_ack, i.e. while the IRQ handler function was executing. Fixes: f365be092572 ("pinctrl: Add Qualcomm TLMM driver") Cc: Stephen Boyd <sboyd@codeaurora.org> Reported-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-31virtio_balloon: init 1st buffer in stats vqLadi Prosek
commit fc8653228c8588a120f6b5dad6983b7b61ff669e upstream. When init_vqs runs, virtio_balloon.stats is either uninitialized or contains stale values. The host updates its state with garbage data because it has no way of knowing that this is just a marker buffer used for signaling. This patch updates the stats before pushing the initial buffer. Alternative fixes: * Push an empty buffer in init_vqs. Not easily done with the current virtio implementation and violates the spec "Driver MUST supply the same subset of statistics in all buffers submitted to the statsq". * Push a buffer with invalid tags in init_vqs. Violates the same spec clause, plus "invalid tag" is not really defined. Note: the spec says: When using the legacy interface, the device SHOULD ignore all values in the first buffer in the statsq supplied by the driver after device initialization. Note: Historically, drivers supplied an uninitialized buffer in the first buffer. Unfortunately QEMU does not seem to implement the recommendation even for the legacy interface. Signed-off-by: Ladi Prosek <lprosek@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30fbcon: Fix vc attr at deinitTakashi Iwai
commit 8aac7f34369726d1a158788ae8aff3002d5eb528 upstream. fbcon can deal with vc_hi_font_mask (the upper 256 chars) and adjust the vc attrs dynamically when vc_hi_font_mask is changed at fbcon_init(). When the vc_hi_font_mask is set, it remaps the attrs in the existing console buffer with one bit shift up (for 9 bits), while it remaps with one bit shift down (for 8 bits) when the value is cleared. It works fine as long as the font gets updated after fbcon was initialized. However, we hit a bizarre problem when the console is switched to another fb driver (typically from vesafb or efifb to drmfb). At switching to the new fb driver, we temporarily rebind the console to the dummy console, then rebind to the new driver. During the switching, we leave the modified attrs as is. Thus, the new fbcon takes over the old buffer as if it were to contain 8 bits chars (although the attrs are still shifted for 9 bits), and effectively this results in the yellow color texts instead of the original white color, as found in the bugzilla entry below. An easy fix for this is to re-adjust the attrs before leaving the fbcon at con_deinit callback. Since the code to adjust the attrs is already present in the current fbcon code, in this patch, we simply factor out the relevant code, and call it from fbcon_deinit(). Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1000619 Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30drm: reference count event->completionDaniel Vetter
commit 24835e442f289813aa568d142a755672a740503c upstream. When writing the generic nonblocking commit code I assumed that through clever lifetime management I can assure that the completion (stored in drm_crtc_commit) only gets freed after it is completed. And that worked. I also wanted to make nonblocking helpers resilient against driver bugs, by having timeouts everywhere. And that worked too. Unfortunately taking boths things together results in oopses :( Well, at least sometimes: What seems to happen is that the drm event hangs around forever stuck in limbo land. The nonblocking helpers eventually time out, move on and release it. Now the bug I tested all this against is drivers that just entirely fail to deliver the vblank events like they should, and in those cases the event is simply leaked. But what seems to happen, at least sometimes, on i915 is that the event is set up correctly, but somohow the vblank fails to fire in time. Which means the event isn't leaked, it's still there waiting for eventually a vblank to fire. That tends to happen when re-enabling the pipe, and then the trap springs and the kernel oopses. The correct fix here is simply to refcount the crtc commit to make sure that the event sticks around even for drivers which only sometimes fail to deliver vblanks for some arbitrary reasons. Since crtc commits are already refcounted that's easy to do. References: https://bugs.freedesktop.org/show_bug.cgi?id=96781 Cc: Jim Rees <rees@umich.edu> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161221102331.31033-1-daniel.vetter@ffwll.ch Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30drm/bridge: analogix dp: Fix runtime PM state on driver bindMarek Szyprowski
commit f0a8b49c03d22a511a601dc54b2a3425a41e35fa upstream. Analogix_dp_bind() can be called from component framework, which doesn't guarantee proper runtime PM state of the device during bind operation, so ensure that device is runtime active before doing any register access. This ensures that the power domain, to which DP module belongs, is turned on. While at it, also fix the unbalanced call to phy_power_on() in analogix_dp_bind() function. This patch solves the following kernel oops on Samsung Exynos5250 Snow board: Unhandled fault: imprecise external abort (0x406) at 0x00000000 pgd = c0004000 [00000000] *pgd=00000000 Internal error: : 406 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 75 Comm: kworker/0:2 Not tainted 4.9.0 #1046 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) Workqueue: events deferred_probe_work_func task: ee272300 task.stack: ee312000 PC is at analogix_dp_enable_sw_function+0x18/0x2c LR is at analogix_dp_init_dp+0x2c/0x50 ... [<c03fcb38>] (analogix_dp_enable_sw_function) from [<c03fa9c4>] (analogix_dp_init_dp+0x2c/0x50) [<c03fa9c4>] (analogix_dp_init_dp) from [<c03fab6c>] (analogix_dp_bind+0x184/0x42c) [<c03fab6c>] (analogix_dp_bind) from [<c03fdb84>] (component_bind_all+0xf0/0x218) [<c03fdb84>] (component_bind_all) from [<c03ed64c>] (exynos_drm_load+0x134/0x200) [<c03ed64c>] (exynos_drm_load) from [<c03d5058>] (drm_dev_register+0xa0/0xd0) [<c03d5058>] (drm_dev_register) from [<c03d66b8>] (drm_platform_init+0x58/0xb0) [<c03d66b8>] (drm_platform_init) from [<c03fe0c4>] (try_to_bring_up_master+0x14c/0x188) [<c03fe0c4>] (try_to_bring_up_master) from [<c03fe188>] (component_add+0x88/0x138) [<c03fe188>] (component_add) from [<c0403a38>] (platform_drv_probe+0x50/0xb0) [<c0403a38>] (platform_drv_probe) from [<c0402470>] (driver_probe_device+0x1f0/0x2a8) [<c0402470>] (driver_probe_device) from [<c0400a54>] (bus_for_each_drv+0x44/0x8c) [<c0400a54>] (bus_for_each_drv) from [<c04021f8>] (__device_attach+0x9c/0x100) [<c04021f8>] (__device_attach) from [<c04018e8>] (bus_probe_device+0x84/0x8c) [<c04018e8>] (bus_probe_device) from [<c0401d1c>] (deferred_probe_work_func+0x60/0x8c) [<c0401d1c>] (deferred_probe_work_func) from [<c012fc14>] (process_one_work+0x120/0x318) [<c012fc14>] (process_one_work) from [<c012fe34>] (process_scheduled_works+0x28/0x38) [<c012fe34>] (process_scheduled_works) from [<c0130048>] (worker_thread+0x204/0x4ac) [<c0130048>] (worker_thread) from [<c01352c4>] (kthread+0xd8/0xf4) [<c01352c4>] (kthread) from [<c0107978>] (ret_from_fork+0x14/0x3c) Code: e59035f0 e5935018 f57ff04f e3c55001 (f57ff04e) ---[ end trace 3d1d0d87796de344 ]--- Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1483091866-1088-1-git-send-email-m.szyprowski@samsung.com Cc: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30device-dax: fix pmd/pte fault fallback handlingDave Jiang
commit 0134ed4fb9e78672ee9f7b18007114404c81e63f upstream. Jeff Moyer reports: With a device dax alignment of 4KB or 2MB, I get sigbus when running the attached fio job file for the current kernel (4.11.0-rc1+). If I specify an alignment of 1GB, it works. I turned on debug output, and saw that it was failing in the huge fault code. dax dax1.0: dax_open dax dax1.0: dax_mmap dax dax1.0: dax_dev_huge_fault: fio: write (0x7f08f0a00000 - dax dax1.0: __dax_dev_pud_fault: phys_to_pgoff(0xffffffffcf60 dax dax1.0: dax_release fio config for reproduce: [global] ioengine=dev-dax direct=0 filename=/dev/dax0.0 bs=2m [write] rw=write [read] stonewall rw=read The driver fails to fallback when taking a fault that is larger than the device alignment, or handling a larger fault when a smaller mapping is already established. While we could support larger mappings for a device with a smaller alignment, that change is too large for the immediate fix. The simplest change is to force fallback until the fault size matches the alignment. Fixes: dee410792419 ("/dev/dax, core: file operations and dax-mmap") Cc: <stable@vger.kernel.org> Reported-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30Drivers: hv: vmbus: Don't leak memory when a channel is rescindedK. Y. Srinivasan
commit 5e030d5ce9d99a899b648413139ff65bab12b038 upstream. When we close a channel that has been rescinded, we will leak memory since vmbus_teardown_gpadl() returns an error. Fix this so that we can properly cleanup the memory allocated to the ring buffers. Fixes: ccb61f8a99e6 ("Drivers: hv: vmbus: Fix a rescind handling bug") Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: Dexuan Cui <decui@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30Drivers: hv: vmbus: Don't leak channel idsK. Y. Srinivasan
commit 9a5476020a5f06a0fc6f17097efc80275d2f03cd upstream. If we cannot allocate memory for the channel, free the relid associated with the channel. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30intel_th: Don't leak module refcount on failure to activateAlexander Shishkin
commit e609ccef5222c73b46b322be7d3796d60bff353d upstream. Output 'activation' may fail for the reasons of the output driver, for example, if msc's buffer is not allocated. We forget, however, to drop the module reference in this case. So each attempt at activation in this case leaks a reference, preventing the module from ever unloading. This patch adds the missing module_put() in the activation error path. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30auxdisplay: img-ascii-lcd: add missing sentinel entry in img_ascii_lcd_matchesDmitry Torokhov
commit abda288bb207e5c681306299126af8c022709c18 upstream. The OF device table must be terminated, otherwise we'll be walking past it and into areas unknown. Fixes: 0cad855fbd08 ("auxdisplay: img-ascii-lcd: driver for simple ASCII...") Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Tested-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30drm/amdgpu: reinstate oland workaround for sclkAlex Deucher
commit e11ddff68a7c455e63c4b46154a3e75c699a7b55 upstream. Higher sclks seem to be unstable on some boards. bug: https://bugs.freedesktop.org/show_bug.cgi?id=100222 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30cpufreq: Restore policy min/max limits on CPU onlineViresh Kumar
commit ff010472fb75670cb5c08671e820eeea3af59c87 upstream. On CPU online the cpufreq core restores the previous governor (or the previous "policy" setting for ->setpolicy drivers), but it does not restore the min/max limits at the same time, which is confusing, inconsistent and real pain for users who set the limits and then suspend/resume the system (using full suspend), in which case the limits are reset on all CPUs except for the boot one. Fix this by making cpufreq_online() restore the limits when an inactive policy is brought online. The commit log and patch are inspired from Rafael's earlier work. Reported-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30iommu/vt-d: Fix NULL pointer dereference in device_to_iommuKoos Vriezen
commit 5003ae1e735e6bfe4679d9bed6846274f322e77e upstream. The function device_to_iommu() in the Intel VT-d driver lacks a NULL-ptr check, resulting in this oops at boot on some platforms: BUG: unable to handle kernel NULL pointer dereference at 00000000000007ab IP: [<ffffffff8132234a>] device_to_iommu+0x11a/0x1a0 PGD 0 [...] Call Trace: ? find_or_alloc_domain.constprop.29+0x1a/0x300 ? dw_dma_probe+0x561/0x580 [dw_dmac_core] ? __get_valid_domain_for_dev+0x39/0x120 ? __intel_map_single+0x138/0x180 ? intel_alloc_coherent+0xb6/0x120 ? sst_hsw_dsp_init+0x173/0x420 [snd_soc_sst_haswell_pcm] ? mutex_lock+0x9/0x30 ? kernfs_add_one+0xdb/0x130 ? devres_add+0x19/0x60 ? hsw_pcm_dev_probe+0x46/0xd0 [snd_soc_sst_haswell_pcm] ? platform_drv_probe+0x30/0x90 ? driver_probe_device+0x1ed/0x2b0 ? __driver_attach+0x8f/0xa0 ? driver_probe_device+0x2b0/0x2b0 ? bus_for_each_dev+0x55/0x90 ? bus_add_driver+0x110/0x210 ? 0xffffffffa11ea000 ? driver_register+0x52/0xc0 ? 0xffffffffa11ea000 ? do_one_initcall+0x32/0x130 ? free_vmap_area_noflush+0x37/0x70 ? kmem_cache_alloc+0x88/0xd0 ? do_init_module+0x51/0x1c4 ? load_module+0x1ee9/0x2430 ? show_taint+0x20/0x20 ? kernel_read_file+0xfd/0x190 ? SyS_finit_module+0xa3/0xb0 ? do_syscall_64+0x4a/0xb0 ? entry_SYSCALL64_slow_path+0x25/0x25 Code: 78 ff ff ff 4d 85 c0 74 ee 49 8b 5a 10 0f b6 9b e0 00 00 00 41 38 98 e0 00 00 00 77 da 0f b6 eb 49 39 a8 88 00 00 00 72 ce eb 8f <41> f6 82 ab 07 00 00 04 0f 85 76 ff ff ff 0f b6 4d 08 88 0e 49 RIP [<ffffffff8132234a>] device_to_iommu+0x11a/0x1a0 RSP <ffffc90001457a78> CR2: 00000000000007ab ---[ end trace 16f974b6d58d0aad ]--- Add the missing pointer check. Fixes: 1c387188c60f53b338c20eee32db055dfe022a9b ("iommu/vt-d: Fix IOMMU lookup for SR-IOV Virtual Functions") Signed-off-by: Koos Vriezen <koos.vriezen@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-30xen/acpi: upload PM state from init-domain to XenAnkur Arora
commit 1914f0cd203c941bba72f9452c8290324f1ef3dc upstream. This was broken in commit cd979883b9ed ("xen/acpi-processor: fix enabling interrupts on syscore_resume"). do_suspend (from xen/manage.c) and thus xen_resume_notifier never get called on the initial-domain at resume (it is if running as guest.) The rationale for the breaking change was that upload_pm_data() potentially does blocking work in syscore_resume(). This patch addresses the original issue by scheduling upload_pm_data() to execute in workqueue context. Cc: Stanislaw Gruszka <sgruszka@redhat.com> Based-on-patch-by: Konrad Wilk <konrad.wilk@oracle.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>