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8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Sat, 6 Feb 2016 03:52:57 +0000 (19:52 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Pull Ceph fixes from Sage Weil:
 "We have a few wire protocol compatibility fixes, ports of a few recent
  CRUSH mapping changes, and a couple error path fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  libceph: MOSDOpReply v7 encoding
  libceph: advertise support for TUNABLES5
  crush: decode and initialize chooseleaf_stable
  crush: add chooseleaf_stable tunable
  crush: ensure take bucket value is valid
  crush: ensure bucket id is valid before indexing buckets array
  ceph: fix snap context leak in error path
  ceph: checking for IS_ERR instead of NULL

8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 6 Feb 2016 03:38:15 +0000 (19:38 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Fixes all over the place:

   - amdkfd: two static checker fixes
   - mst: a bunch of static checker and spec/hw interaction fixes
   - amdgpu: fix Iceland hw properly, and some fiji bugs, along with
     some write-combining fixes.
   - exynos: some regression fixes
   - adv7511: fix some EDID reading issues"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (38 commits)
  drm/dp/mst: deallocate payload on port destruction
  drm/dp/mst: Reverse order of MST enable and clearing VC payload table.
  drm/dp/mst: move GUID storage from mgr, port to only mst branch
  drm/dp/mst: change MST detection scheme
  drm/dp/mst: Calculate MST PBN with 31.32 fixed point
  drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
  drm/mst: Add range check for max_payloads during init
  drm/mst: Don't ignore the MST PBN self-test result
  drm: fix missing reference counting decrease
  drm/amdgpu: disable uvd and vce clockgating on Fiji
  drm/amdgpu: remove exp hardware support from iceland
  drm/amdgpu: load MEC ucode manually on iceland
  drm/amdgpu: don't load MEC2 on topaz
  drm/amdgpu: drop topaz support from gmc8 module
  drm/amdgpu: pull topaz gmc bits into gmc_v7
  drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
  drm/amdgpu: iceland use CI based MC IP
  drm/amdgpu: move gmc7 support out of CIK dependency
  drm/amdgpu/gfx7: enable cp inst/reg error interrupts
  drm/amdgpu/gfx8: enable cp inst/reg error interrupts
  ...

8 years agoMerge tag 'pm+acpi-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 6 Feb 2016 02:11:23 +0000 (18:11 -0800)]
Merge tag 'pm+acpi-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are: a fix for a recently introduced false-positive warnings
  about PM domain pointers being changed inappropriately (harmless but
  annoying), an MCH size workaround quirk for one more platform, a
  compiler warning fix (generic power domains framework), an ACPI LPSS
  (Intel SoCs) driver fixup and a cleanup of the ACPI CPPC core code.

  Specifics:

   - PM core fix to avoid false-positive warnings generated when the
     pm_domain field is cleared for a device that appears to be bound to
     a driver (Rafael Wysocki).

   - New MCH size workaround quirk for Intel Haswell-ULT (Josh Boyer).

   - Fix for an "unused function" compiler warning in the generic power
     domains framework (Ulf Hansson).

   - Fixup for the ACPI driver for Intel SoCs (acpi-lpss) to set the PM
     domain pointer of a device properly in one place that was
     overlooked by a recent PM core update (Andy Shevchenko).

   - Removal of a redundant function declaration in the ACPI CPPC core
     code (Timur Tabi)"

* tag 'pm+acpi-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: Avoid false-positive warnings in dev_pm_domain_set()
  PM / Domains: Silence compiler warning for an unused function
  ACPI / CPPC: remove redundant mbox_send_message() declaration
  ACPI / LPSS: set PM domain via helper setter
  PNP: Add Haswell-ULT to Intel MCH size workaround

8 years agoMerge branches 'pm-core' and 'pm-domains'
Rafael J. Wysocki [Fri, 5 Feb 2016 23:34:01 +0000 (00:34 +0100)]
Merge branches 'pm-core' and 'pm-domains'

* pm-core:
  PM: Avoid false-positive warnings in dev_pm_domain_set()
  ACPI / LPSS: set PM domain via helper setter

* pm-domains:
  PM / Domains: Silence compiler warning for an unused function

8 years agoMerge branches 'pnp' and 'acpi-cppc'
Rafael J. Wysocki [Fri, 5 Feb 2016 23:33:52 +0000 (00:33 +0100)]
Merge branches 'pnp' and 'acpi-cppc'

* pnp:
  PNP: Add Haswell-ULT to Intel MCH size workaround

* acpi-cppc:
  ACPI / CPPC: remove redundant mbox_send_message() declaration

8 years agoMerge tag 'media/v4.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Fri, 5 Feb 2016 20:46:38 +0000 (12:46 -0800)]
Merge tag 'media/v4.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 - vb2: fix a vb2_thread regression and DVB read() breakages
 - vsp1: fix compilation and links creation
 - s5k6a3: Fix VIDIOC_SUBDEV_G_FMT ioctl for TRY format
 - exynos4-is: fix a build issue, format negotiation and sensor detection
 - Fix a regression with pvrusb2 and ir-kbd-i2c
 - atmel-isi: fix debug message which only show the first format
 - tda1004x: fix a tuning bug if G_PROPERTY is called too early
 - saa7134-alsa: fix a bug at device unbinding/driver removal
 - Fix build of one driver if !HAS_DMA
 - soc_camera: cleanup control device on async_unbind

* tag 'media/v4.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] saa7134-alsa: Only frees registered sound cards
  [media] vb2-core: call threadio->fnc() if !VB2_BUF_STATE_ERROR
  [media] vb2: fix nasty vb2_thread regression
  [media] tda1004x: only update the frontend properties if locked
  [media] media: i2c: Don't export ir-kbd-i2c module alias
  [media] exynos4-is: make VIDEO_SAMSUNG_EXYNOS4_IS tristate
  [media] media: Kconfig: add dependency of HAS_DMA
  [media] exynos4-is: Wait for 100us before opening sensor
  [media] exynos4-is: Open shouldn't fail when sensor entity is not linked
  [media] s5k6a3: Fix VIDIOC_SUBDEV_G_FMT ioctl for TRY format
  [media] exynos4-is: fix a format string bug
  [media] drivers/media: vsp1_video: fix compile error
  [media] atmel-isi: fix debug message which only show the first format
  [media] soc_camera: cleanup control device on async_unbind
  [media] v4l: vsp1: Fix wrong entities links creation

8 years agoMerge tag 'sound-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 5 Feb 2016 20:34:44 +0000 (12:34 -0800)]
Merge tag 'sound-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This was a busy week and I had to prepare a pile of duct tapes for the
  bugs reported by syzkaller fuzzer in wide range of ALSA core APIs:
  timer, rawmidi, sequencer, and PCM OSS emulation.  Let's see how many
  other holes we need to plug.

  Besides that, a few usual boring stuff, HD- and USB-audio quirks, have
  been added"

* tag 'sound-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: timer: Fix leftover link at closing
  ALSA: seq: Fix lockdep warnings due to double mutex locks
  ALSA: rawmidi: Fix race at copying & updating the position
  ALSA: rawmidi: Make snd_rawmidi_transmit() race-free
  ALSA: hda - Add fixup for Mac Mini 7,1 model
  ALSA: hda/realtek - Support headset mode for ALC225
  ALSA: hda/realtek - Support Dell headset mode for ALC225
  ALSA: hda/realtek - New codec support of ALC225
  ALSA: timer: Sync timer deletion at closing the system timer
  ALSA: timer: Fix link corruption due to double start or stop
  ALSA: seq: Fix yet another races among ALSA timer accesses
  ALSA: pcm: Fix potential deadlock in OSS emulation
  ALSA: rawmidi: Remove kernel WARNING for NULL user-space buffer check
  ALSA: seq: Fix race at closing in virmidi driver
  ALSA: emu10k1: correctly handling failed thread creation
  ALSA: usb-audio: Add quirk for Microsoft LifeCam HD-6000
  ALSA: usb-audio: Add native DSD support for PS Audio NuWave DAC
  ALSA: usb-audio: Fix OPPO HA-1 vendor ID

8 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Fri, 5 Feb 2016 19:20:15 +0000 (11:20 -0800)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fixes from Wim Van Sebroeck:
 "This fixes several Kconfig dependencies, a compilation warning in
  pcwd_usb, a failure to abort the sp805 wdt after a ping and the
  max63xx wdt's MODULE_LICENSE"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: Fix dependencies for !HAS_IOMEM archs
  watchdog: imgdpc: select WATCHDOG_CORE
  watchdog: tango: rename ARCH_TANGOX to ARCH_TANGO
  watchdog: pcwd_usb: fix compilation warning
  watchdog: sp805: ping fails to abort wdt reset
  watchdog: max63xx: make module's license marker match the header

8 years agoMerge branch 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux into...
Dave Airlie [Fri, 5 Feb 2016 05:24:17 +0000 (15:24 +1000)]
Merge branch 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux into drm-fixes

displayport multistream fixes from AMD.

* 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux:
  drm/dp/mst: deallocate payload on port destruction
  drm/dp/mst: Reverse order of MST enable and clearing VC payload table.
  drm/dp/mst: move GUID storage from mgr, port to only mst branch
  drm/dp/mst: change MST detection scheme
  drm/dp/mst: Calculate MST PBN with 31.32 fixed point
  drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
  drm/mst: Add range check for max_payloads during init
  drm/mst: Don't ignore the MST PBN self-test result
  drm: fix missing reference counting decrease

8 years agodrm/dp/mst: deallocate payload on port destruction
Mykola Lysenko [Wed, 27 Jan 2016 14:39:36 +0000 (09:39 -0500)]
drm/dp/mst: deallocate payload on port destruction

This is needed to properly deallocate port payload
after downstream branch get unplugged.

In order to do this unplugged MST topology should
be preserved, to find first alive port on path to
unplugged MST topology, and send payload deallocation
request to branch device of found port.

For this mstb and port kref's are used in reversed
order to track when port and branch memory could be
freed.

Added additional functions to find appropriate mstb
as described above.

Signed-off-by: Mykola Lysenko <Mykola.Lysenko@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm/dp/mst: Reverse order of MST enable and clearing VC payload table.
Andrey Grodzovsky [Fri, 22 Jan 2016 22:07:29 +0000 (17:07 -0500)]
drm/dp/mst: Reverse order of MST enable and clearing VC payload table.

On DELL U3014 if you clear the table before enabling MST it sometimes
hangs the receiver.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm/dp/mst: move GUID storage from mgr, port to only mst branch
Hersen Wu [Fri, 22 Jan 2016 22:07:28 +0000 (17:07 -0500)]
drm/dp/mst: move GUID storage from mgr, port to only mst branch

Previous implementation does not handle case below: boot up one MST branch
to DP connector of ASIC. After boot up, hot plug 2nd MST branch to DP output
of 1st MST, GUID is not created for 2nd MST branch. When downstream port of
2nd MST branch send upstream request, it fails because 2nd MST branch GUID
is not available.

New Implementation: only create GUID for MST branch and save it within Branch.

Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm/dp/mst: change MST detection scheme
Mykola Lysenko [Fri, 22 Jan 2016 22:07:27 +0000 (17:07 -0500)]
drm/dp/mst: change MST detection scheme

1. Get edid for all connected MST displays, not only on logical ports,
   in the same thread as MST topology detection is done:
     There are displays that have branches inside w/o logical ports.
     So in case another SST display connected downstream system can
     end-up in situation when 3 DOWN requests sent: two for
    ‘remote i2c read’ and one for ‘enum path resources’, making slots full.

2. Call notification callback in one place in the end of topology discovery/update:
     This is done to reduce number of events sent to userspace in case complex
     topology discovery is going, adding multiple number of connectors;

3. Remove notification callback call from short pulse interrupt processing function:
     This is done in order not to block interrupt processing function, in case any
     MST request will be made from it. Notification will be send from topology
     discovery/update work item.

Signed-off-by: Mykola Lysenko <Mykola.Lysenko@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm/dp/mst: Calculate MST PBN with 31.32 fixed point
Harry Wentland [Fri, 22 Jan 2016 22:07:26 +0000 (17:07 -0500)]
drm/dp/mst: Calculate MST PBN with 31.32 fixed point

Our PBN value overflows the 20 bits integer part of the 20.12
fixed point. We need to use 31.32 fixed point to avoid this.

This happens with display clocks larger than 293122 (at 24 bpp),
which we see with the Sharp (and similar) 4k tiled displays.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
Harry Wentland [Fri, 22 Jan 2016 22:07:25 +0000 (17:07 -0500)]
drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil

drm_fixp_from_fraction allows us to create a fixed point directly
from a fraction, rather than creating fixed point values and dividing
later. This avoids overflow of our 64 bit value for large numbers.

drm_fixp2int_ceil allows us to return the ceiling of our fixed point
value.

[airlied: squash Jordan's fix]
32-bit-build-fix: Jordan Lazare <Jordan.Lazare@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm/mst: Add range check for max_payloads during init
Imre Deak [Fri, 29 Jan 2016 12:44:29 +0000 (14:44 +0200)]
drm/mst: Add range check for max_payloads during init

max_payload is limited by the space we have in
drm_dp_mst_topology_mgr::vcpi_mask,payload_mask. We need to track
max_payloads+1 IDs in these masks, see drm_dp_mst_assign_payload_id().
Add a sanity check for this.

Caught by coverity.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: David Weinehall <david.weinehall@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm/mst: Don't ignore the MST PBN self-test result
Imre Deak [Fri, 29 Jan 2016 12:44:28 +0000 (14:44 +0200)]
drm/mst: Don't ignore the MST PBN self-test result

Otherwise this call would have no effect.

Caught by Coverity.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: David Weinehall <david.weinehall@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agodrm: fix missing reference counting decrease
Insu Yun [Mon, 1 Feb 2016 16:08:29 +0000 (11:08 -0500)]
drm: fix missing reference counting decrease

In drm_dp_mst_allocate_vcpi, it returns true in two paths,
but in one path, there is no reference couting decrease.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
8 years agoMerge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 5 Feb 2016 04:48:36 +0000 (14:48 +1000)]
Merge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

- fix and enable iceland/topaz support
- handle WC on platforms that don't support it

* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: disable uvd and vce clockgating on Fiji
  drm/amdgpu: remove exp hardware support from iceland
  drm/amdgpu: load MEC ucode manually on iceland
  drm/amdgpu: don't load MEC2 on topaz
  drm/amdgpu: drop topaz support from gmc8 module
  drm/amdgpu: pull topaz gmc bits into gmc_v7
  drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
  drm/amdgpu: iceland use CI based MC IP
  drm/amdgpu: move gmc7 support out of CIK dependency
  drm/amdgpu/gfx7: enable cp inst/reg error interrupts
  drm/amdgpu/gfx8: enable cp inst/reg error interrupts
  drm/amdgpu: mask out WC from BO on unsupported arches
  drm/radeon: mask out WC from BO on unsupported arches
  drm: add helper to check for wc memory support
  drm/amdgpu: no need to load MC firmware on fiji

8 years agoMerge tag 'drm-amdkfd-fixes-2016-01-28' of git://people.freedesktop.org/~gabbayo...
Dave Airlie [Fri, 5 Feb 2016 04:47:24 +0000 (14:47 +1000)]
Merge tag 'drm-amdkfd-fixes-2016-01-28' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes

two static checker fixes.

* tag 'drm-amdkfd-fixes-2016-01-28' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: Remove unnecessary cast in kfree
  drm/amdgpu: fix non-ANSI declaration of amdgpu_amdkfd_gfx_*_get_functions()

8 years agoMerge branch 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git...
Dave Airlie [Fri, 5 Feb 2016 04:45:44 +0000 (14:45 +1000)]
Merge branch 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

  Just regression fixes.
   - Fix build warning and error without PM configuration
   - Fix no display issue on Snow board reported by Michal Suchanek,
     http://www.spinics.net/lists/dri-devel/msg99473.html

* 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: dp: Fix panel and bridge lookup logic
  drm: exynos: make PM functions as __maybe_unused
  drm/exynos: fix building without CONFIG_PM_SLEEP

8 years agoMerge branch 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux...
Dave Airlie [Fri, 5 Feb 2016 04:44:16 +0000 (14:44 +1000)]
Merge branch 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into drm-fixes

misc adv7511 edid reading fixes.

* 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  drm: adv7511: it's HPD, not HDP
  drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile
  drm: adv7511: really enable interrupts for EDID detection

8 years agoMerge tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Fri, 5 Feb 2016 04:43:35 +0000 (14:43 +1000)]
Merge tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel into drm-fixes

misc i915 fixes.

* tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: refine qemu south bridge detection
  drm/i915: Remove select to deleted STOP_MACHINE from Kconfig
  drm/i915: Fix NULL plane->fb oops on SKL
  drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+
  drm/i915/dp: fall back to 18 bpp when sink capability is unknown
  drm/i915: Make sure DC writes are coherent on flush.

8 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Thu, 4 Feb 2016 22:09:55 +0000 (14:09 -0800)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Nothing particularly interesting here, but all important fixes
  nonetheless:

   - Add missing PAN toggling in the futex code

   - Fix missing #include that briefly caused issues in -next

   - Allow changing of vmalloc permissions with set_memory_* (used by
     bpf)"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: asm: Explicitly include linux/personality.h in asm/page.h
  arm64: futex.h: Add missing PAN toggling
  arm64: allow vmalloc regions to be set with set_memory_*

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
Linus Torvalds [Thu, 4 Feb 2016 19:50:15 +0000 (11:50 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

Pull MD fix from Shaohua Li:
 "As you know, Neil steps down from MD.  I'm looking after it.  Here are
  some patches queued.

  A build fix from Gayatri and several trival patches from me"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  md-cluster: delete useless code
  md-cluster: fix missing memory free
  raid6/algos.c : bug fix : Add the missing definitions to the pq.h file
  MD: add myself as MD maintainer
  MD: rename some functions

8 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Linus Torvalds [Thu, 4 Feb 2016 19:18:22 +0000 (11:18 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 - One minor fix to the ib core
 - Four minor fixes to the Mellanox drivers
 - Remove three deprecated drivers from staging/rdma now that all of
   Greg's queued changes to them are merged

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  staging/rdma: remove deprecated ipath driver
  staging/rdma: remove deprecated ehca driver
  staging/rdma: remove deprecated amso1100 driver
  IB/core: Set correct payload length for RoCEv2 over IPv6
  IB/mlx5: Use MLX5_GET to correctly get end of padding mode
  IB/mlx5: Fix use of null pointer PD
  IB/mlx5: Fix reqlen validation in mlx5_ib_alloc_ucontext
  IB/mlx5: Add CREATE_CQ and CREATE_QP to uverbs_ex_cmd_mask

8 years ago[media] saa7134-alsa: Only frees registered sound cards
Mauro Carvalho Chehab [Thu, 4 Feb 2016 17:59:43 +0000 (15:59 -0200)]
[media] saa7134-alsa: Only frees registered sound cards

That prevents this bug:
[ 2382.269496] BUG: unable to handle kernel NULL pointer dereference at 0000000000000540
[ 2382.270013] IP: [<ffffffffa01fe616>] snd_card_free+0x36/0x70 [snd]
[ 2382.270013] PGD 0
[ 2382.270013] Oops: 0002 [#1] SMP
[ 2382.270013] Modules linked in: saa7134_alsa(-) tda1004x saa7134_dvb videobuf2_dvb dvb_core tda827x tda8290 tuner saa7134 tveeprom videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc tun bridge stp llc ebtables ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack it87 hwmon_vid snd_hda_codec_idt snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_seq pcspkr i2c_i801 snd_seq_device snd_pcm snd_timer lpc_ich snd mfd_core soundcore binfmt_misc i915 video i2c_algo_bit drm_kms_helper drm r8169 ata_generic serio_raw pata_acpi mii i2c_core [last unloaded: videobuf2_memops]
[ 2382.270013] CPU: 0 PID: 4899 Comm: rmmod Not tainted 4.5.0-rc1+ #4
[ 2382.270013] Hardware name: PCCHIPS P17G/P17G, BIOS 080012  05/14/2008
[ 2382.270013] task: ffff880039c38000 ti: ffff88003c764000 task.ti: ffff88003c764000
[ 2382.270013] RIP: 0010:[<ffffffffa01fe616>]  [<ffffffffa01fe616>] snd_card_free+0x36/0x70 [snd]
[ 2382.270013] RSP: 0018:ffff88003c767ea0  EFLAGS: 00010286
[ 2382.270013] RAX: ffff88003c767eb8 RBX: 0000000000000000 RCX: 0000000000006260
[ 2382.270013] RDX: ffffffffa020a060 RSI: ffffffffa0206de1 RDI: ffff88003c767eb0
[ 2382.270013] RBP: ffff88003c767ed8 R08: 0000000000019960 R09: ffffffff811a5412
[ 2382.270013] R10: ffffea0000d7c200 R11: 0000000000000000 R12: ffff88003c767ea8
[ 2382.270013] R13: 00007ffe760617f7 R14: 0000000000000000 R15: 0000557625d7f1e0
[ 2382.270013] FS:  00007f80bb1c0700(0000) GS:ffff88003f400000(0000) knlGS:0000000000000000
[ 2382.270013] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 2382.270013] CR2: 0000000000000540 CR3: 000000003c00f000 CR4: 00000000000006f0
[ 2382.270013] Stack:
[ 2382.270013]  000000003c767ed8 ffffffff00000000 ffff880000000000 ffff88003c767eb8
[ 2382.270013]  ffff88003c767eb8 ffffffffa049a890 00007ffe76060060 ffff88003c767ef0
[ 2382.270013]  ffffffffa049889d ffffffffa049a500 ffff88003c767f48 ffffffff8111079c
[ 2382.270013] Call Trace:
[ 2382.270013]  [<ffffffffa049889d>] saa7134_alsa_exit+0x1d/0x780 [saa7134_alsa]
[ 2382.270013]  [<ffffffff8111079c>] SyS_delete_module+0x19c/0x1f0
[ 2382.270013]  [<ffffffff8170fc2e>] entry_SYSCALL_64_fastpath+0x12/0x71
[ 2382.270013] Code: 20 a0 48 c7 c6 e1 6d 20 a0 48 89 e5 41 54 53 4c 8d 65 d0 48 89 fb 48 83 ec 28 c7 45 d0 00 00 00 00 49 8d 7c 24 08 e8 7a 55 ed e0 <4c> 89 a3 40 05 00 00 48 89 df e8 eb fd ff ff 85 c0 75 1a 48 8d
[ 2382.270013] RIP  [<ffffffffa01fe616>] snd_card_free+0x36/0x70 [snd]
[ 2382.270013]  RSP <ffff88003c767ea0>
[ 2382.270013] CR2: 0000000000000540

Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
8 years agolibceph: MOSDOpReply v7 encoding
Ilya Dryomov [Wed, 3 Feb 2016 14:25:48 +0000 (15:25 +0100)]
libceph: MOSDOpReply v7 encoding

Empty request_redirect_t (struct ceph_request_redirect in the kernel
client) is now encoded with a bool.  NEW_OSDOPREPLY_ENCODING feature
bit overlaps with already supported CRUSH_TUNABLES5.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
8 years agolibceph: advertise support for TUNABLES5
Ilya Dryomov [Mon, 1 Feb 2016 16:08:33 +0000 (17:08 +0100)]
libceph: advertise support for TUNABLES5

Add TUNABLES5 feature (chooseleaf_stable tunable) to a set of features
supported by default.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
8 years agocrush: decode and initialize chooseleaf_stable
Ilya Dryomov [Mon, 1 Feb 2016 15:57:16 +0000 (16:57 +0100)]
crush: decode and initialize chooseleaf_stable

Also add missing \n while at it.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
8 years agocrush: add chooseleaf_stable tunable
Ilya Dryomov [Sun, 31 Jan 2016 13:36:07 +0000 (14:36 +0100)]
crush: add chooseleaf_stable tunable

Add a tunable to fix the bug that chooseleaf may cause unnecessary pg
migrations when some device fails.

Reflects ceph.git commit fdb3f664448e80d984470f32f04e2e6f03ab52ec.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
8 years agocrush: ensure take bucket value is valid
Ilya Dryomov [Sun, 31 Jan 2016 13:36:05 +0000 (14:36 +0100)]
crush: ensure take bucket value is valid

Ensure that the take argument is a valid bucket ID before indexing the
buckets array.

Reflects ceph.git commit 93ec538e8a667699876b72459b8ad78966d89c61.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
8 years agocrush: ensure bucket id is valid before indexing buckets array
Ilya Dryomov [Sun, 31 Jan 2016 13:35:59 +0000 (14:35 +0100)]
crush: ensure bucket id is valid before indexing buckets array

We were indexing the buckets array without verifying the index was
within the [0,max_buckets) range.  This could happen because
a multistep rule does not have enough buckets and has CRUSH_ITEM_NONE
for an intermediate result, which would feed in CRUSH_ITEM_NONE and
make us crash.

Reflects ceph.git commit 976a24a326da8931e689ee22fce35feab5b67b76.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
8 years agoceph: fix snap context leak in error path
Yan, Zheng [Tue, 26 Jan 2016 15:05:37 +0000 (23:05 +0800)]
ceph: fix snap context leak in error path

Signed-off-by: Yan, Zheng <zyan@redhat.com>
8 years agoceph: checking for IS_ERR instead of NULL
Dan Carpenter [Tue, 26 Jan 2016 09:24:44 +0000 (12:24 +0300)]
ceph: checking for IS_ERR instead of NULL

ceph_osdc_alloc_request() returns NULL on error, it never returns error
pointers.

Fixes: 5be0389dac66 ('ceph: re-send AIO write request when getting -EOLDSNAP error')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
8 years agoALSA: timer: Fix leftover link at closing
Takashi Iwai [Thu, 4 Feb 2016 16:06:13 +0000 (17:06 +0100)]
ALSA: timer: Fix leftover link at closing

In ALSA timer core, the active timer instance is managed in
active_list linked list.  Each element is added / removed dynamically
at timer start, stop and in timer interrupt.  The problem is that
snd_timer_interrupt() has a thinko and leaves the element in
active_list when it's the last opened element.  This eventually leads
to list corruption or use-after-free error.

This hasn't been revealed because we used to delete the list forcibly
in snd_timer_stop() in the past.  However, the recent fix avoids the
double-stop behavior (in commit [f784beb75ce8: ALSA: timer: Fix link
corruption due to double start or stop]), and this leak hits reality.

This patch fixes the link management in snd_timer_interrupt().  Now it
simply unlinks no matter which stream is.

BugLink: http://lkml.kernel.org/r/CACT4Y+Yy2aukHP-EDp8-ziNqNNmb-NTf=jDWXMP7jB8HDa2vng@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years ago[media] vb2-core: call threadio->fnc() if !VB2_BUF_STATE_ERROR
Mauro Carvalho Chehab [Wed, 3 Feb 2016 21:30:31 +0000 (19:30 -0200)]
[media] vb2-core: call threadio->fnc() if !VB2_BUF_STATE_ERROR

changeset 70433a152f0 ("media: videobuf2: Refactor vb2_fileio_data
and vb2_thread") broke videobuf2-dvb.

The root cause is that, instead of calling threadio->fnc() for
all types of events except for VB2_BUF_STATE_ERROR, it was calling
it only for VB2_BUF_STATE_DONE.

With that, the DVB thread were never called.

Cc: stable@vger.kernel.org # Kernel >= 4.3
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
8 years ago[media] vb2: fix nasty vb2_thread regression
Hans Verkuil [Wed, 27 Jan 2016 12:08:42 +0000 (10:08 -0200)]
[media] vb2: fix nasty vb2_thread regression

The vb2_thread implementation was made generic and was moved from
videobuf2-v4l2.c to videobuf2-core.c in commit af3bac1a. Unfortunately
that clearly was never tested since it broke read() causing NULL address
references.

The root cause was confused handling of vb2_buffer vs v4l2_buffer (the pb
pointer in various core functions).

The v4l2_buffer no longer exists after moving the code into the core and
it is no longer needed. However, the vb2_thread code passed a pointer to
a vb2_buffer to the core functions were a v4l2_buffer pointer was expected
and vb2_thread expected that the vb2_buffer fields would be filled in
correctly.

This is obviously wrong since v4l2_buffer != vb2_buffer. Note that the
pb pointer is a void pointer, so no type-checking took place.

This patch fixes this problem:

1) allow pb to be NULL for vb2_core_(d)qbuf. The vb2_thread code will use
   a NULL pointer here since they don't care about v4l2_buffer anyway.
2) let vb2_core_dqbuf pass back the index of the received buffer. This is
   all vb2_thread needs: this index is the index into the q->bufs array
   and vb2_thread just gets the vb2_buffer from there.
3) the fileio->b pointer (that originally contained a v4l2_buffer) is
   removed altogether since it is no longer needed.

Tested with vivid and the cobalt driver.

Cc: stable@vger.kernel.org # Kernel >= 4.3
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
8 years ago[media] tda1004x: only update the frontend properties if locked
Mauro Carvalho Chehab [Wed, 3 Feb 2016 19:33:48 +0000 (17:33 -0200)]
[media] tda1004x: only update the frontend properties if locked

The tda1004x was updating the properties cache before locking.
If the device is not locked, the data at the registers are just
random values with no real meaning.

This caused the driver to fail with libdvbv5, as such library
calls GET_PROPERTY from time to time, in order to return the
DVB stats.

Tested with a saa7134 card 78:
ASUSTeK P7131 Dual, vendor PCI ID: 1043:4862

Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
8 years agoMerge branch 'mymd/for-next' into mymd/for-linus
Shaohua Li [Wed, 3 Feb 2016 23:43:59 +0000 (15:43 -0800)]
Merge branch 'mymd/for-next' into mymd/for-linus

8 years agoarm64: asm: Explicitly include linux/personality.h in asm/page.h
Mark Brown [Thu, 28 Jan 2016 12:18:28 +0000 (12:18 +0000)]
arm64: asm: Explicitly include linux/personality.h in asm/page.h

asm/page.h uses READ_IMPLIES_EXEC from linux/personality.h but does not
explicitly include it causing build failures in -next where whatever was
causing it to be implicitly included has changed to remove that
inclusion.  Add an explicit inclusion to fix this.

Signed-off-by: Mark Brown <broonie@kernel.org>
[will: moved #include inside #ifndef __ASSEMBLY__ block]
Signed-off-by: Will Deacon <will.deacon@arm.com>
8 years agodrm/amdgpu: disable uvd and vce clockgating on Fiji
Alex Deucher [Tue, 2 Feb 2016 23:22:24 +0000 (18:22 -0500)]
drm/amdgpu: disable uvd and vce clockgating on Fiji

Doesn't work properly yet.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Sonny Jiang <sonny.jiang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
8 years agoPM: Avoid false-positive warnings in dev_pm_domain_set()
Rafael J. Wysocki [Sat, 30 Jan 2016 11:54:29 +0000 (12:54 +0100)]
PM: Avoid false-positive warnings in dev_pm_domain_set()

There is a WARN_ON() in dev_pm_domain_set() that triggers on attempts
to set the pm_domain pointer for devices with a driver bound.

However, that WARN_ON() triggers on attempts to clear the pointer
too and the test it uses is based on checking the device's
p->knode_driver pointer which still is set when the device bus
type's/driver's ->remove callback has been executed.  This
leads to false-positive warnings when bus type code calls
dev_pm_domain_set() to clear the pm_domain pointer after
invoking the driver's ->remove() callback.

To avoid those false-positives, make dev_pm_domain_set() check
if the pointer passed to it is NULL and skip the warning in
that case.

Fixes: 989561de9b51 (PM / Domains: add setter for dev.pm_domain)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sinan Kaya <okaya@codeaurora.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
8 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Wed, 3 Feb 2016 18:10:02 +0000 (10:10 -0800)]
Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "18 fixes"

[ The 18 fixes turned into 17 commits, because one of the fixes was a
  fix for another patch in the series that I just folded in by editing
  the patch manually - hopefully correctly     - Linus ]

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: fix memory leak in copy_huge_pmd()
  drivers/hwspinlock: fix race between radix tree insertion and lookup
  radix-tree: fix race in gang lookup
  mm/vmpressure.c: fix subtree pressure detection
  mm: polish virtual memory accounting
  mm: warn about VmData over RLIMIT_DATA
  Documentation: cgroup-v2: add memory.stat::sock description
  mm: memcontrol: drop superfluous entry in the per-memcg stats array
  drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration
  proc: revert /proc/<pid>/maps [stack:TID] annotation
  numa: fix /proc/<pid>/numa_maps for hugetlbfs on s390
  MAINTAINERS: update Seth email
  ocfs2/cluster: fix memory leak in o2hb_region_release
  lib/test-string_helpers.c: fix and improve string_get_size() tests
  thp: limit number of object to scan on deferred_split_scan()
  thp: change deferred_split_count() to return number of THP in queue
  thp: make split_queue per-node

8 years agoMerge tag 'for-linus-4.5-2' of git://git.code.sf.net/p/openipmi/linux-ipmi
Linus Torvalds [Wed, 3 Feb 2016 18:04:58 +0000 (10:04 -0800)]
Merge tag 'for-linus-4.5-2' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull IPMI fix from Corey Minyard:
 "Fix a compile error on IPMI when ACPI is disabled"

* tag 'for-linus-4.5-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: put acpi.h with the other headers

8 years agoMerge tag 'devicetree-fixes-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 3 Feb 2016 17:55:50 +0000 (09:55 -0800)]
Merge tag 'devicetree-fixes-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree fixes from Rob Herring:

 - Fix build error with *_OF_DECLARE() when used in modules

 - Add missing platform maintainers for dts files in MAINTAINERS

* tag 'devicetree-fixes-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: drop symbols declared by _OF_DECLARE() from modules
  MAINTAINERS: Add missing platform maintainers for dts files

8 years agoMerge tag 'nfs-for-4.5-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Wed, 3 Feb 2016 17:36:41 +0000 (09:36 -0800)]
Merge tag 'nfs-for-4.5-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfix and cleanup from Trond Myklebust:
 "Bugfix:
   - pNFS: Fix for missing layoutreturn calls

  Cleanup:
   - pNFS: rename NFS_LAYOUT_RETURN_BEFORE_CLOSE for code clarity"

* tag 'nfs-for-4.5-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: Cleanup - rename NFS_LAYOUT_RETURN_BEFORE_CLOSE
  pNFS: Fix missing layoutreturn calls

8 years agoMerge tag 'trace-v4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Wed, 3 Feb 2016 17:31:34 +0000 (09:31 -0800)]
Merge tag 'trace-v4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "A cleanup to the stack tracer broke stack tracing on s390.  Here's a
  simple fix to correct that issue"

* tag 'trace-v4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/stacktrace: Show entire trace if passed in function not found

8 years agomm: retire GUP WARN_ON_ONCE that outlived its usefulness
Hugh Dickins [Sun, 31 Jan 2016 02:03:16 +0000 (18:03 -0800)]
mm: retire GUP WARN_ON_ONCE that outlived its usefulness

Trinity is now hitting the WARN_ON_ONCE we added in v3.15 commit
cda540ace6a1 ("mm: get_user_pages(write,force) refuse to COW in shared
areas").  The warning has served its purpose, nobody was harmed by that
change, so just remove the warning to generate less noise from Trinity.

Which reminds me of the comment I wrongly left behind with that commit
(but was spotted at the time by Kirill), which has since moved into a
separate function, and become even more obscure: delete it.

Reported-by: Dave Jones <davej@codemonkey.org.uk>
Suggested-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoipmi: put acpi.h with the other headers
Tony Camuso [Tue, 2 Feb 2016 18:57:24 +0000 (13:57 -0500)]
ipmi: put acpi.h with the other headers

Enclosing '#include <linux/acpi.h>' within '#ifdef CONFIG_ACPI' is
unnecessary, since it has its own conditional compile for CONFIG_ACPI.

Commit 0fbcf4af7c83 ("ipmi: Convert the IPMI SI ACPI handling to a
platform device") exposed this as a problem for platforms that do not
support ACPI when it introduced a call to ACPI_PTR() macro outside of
the CONFIG_ACPI conditional compile. This would have been perfectly
acceptable if acpi.h were not conditionally excluded for the non-acpi
platform, because the conditional compile within acpi.h defines
ACPI_PTR() to return NULL when compiled for non acpi platforms.

Signed-off-by: Tony Camuso <tcamuso@redhat.com>
Fixed commit reference in header to conform to standard.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
8 years agomm: fix memory leak in copy_huge_pmd()
Matthew Wilcox [Wed, 3 Feb 2016 00:57:57 +0000 (16:57 -0800)]
mm: fix memory leak in copy_huge_pmd()

We allocate a pgtable but do not attach it to anything if the PMD is in
a DAX VMA, causing it to leak.

We certainly try to not free pgtables associated with the huge zero page
if the zero page is in a DAX VMA, so I think this is the right solution.
This needs to be properly audited.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agodrivers/hwspinlock: fix race between radix tree insertion and lookup
Matthew Wilcox [Wed, 3 Feb 2016 00:57:55 +0000 (16:57 -0800)]
drivers/hwspinlock: fix race between radix tree insertion and lookup

of_hwspin_lock_get_id() is protected by the RCU lock, which means that
insertions can occur simultaneously with the lookup.  If the radix tree
transitions from a height of 0, we can see a slot with the indirect_ptr
bit set, which will cause us to at least read random memory, and could
cause other havoc.

Fix this by using the newly introduced radix_tree_iter_retry().

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoradix-tree: fix race in gang lookup
Matthew Wilcox [Wed, 3 Feb 2016 00:57:52 +0000 (16:57 -0800)]
radix-tree: fix race in gang lookup

If the indirect_ptr bit is set on a slot, that indicates we need to redo
the lookup.  Introduce a new function radix_tree_iter_retry() which
forces the loop to retry the lookup by setting 'slot' to NULL and
turning the iterator back to point at the problematic entry.

This is a pretty rare problem to hit at the moment; the lookup has to
race with a grow of the radix tree from a height of 0.  The consequences
of hitting this race are that gang lookup could return a pointer to a
radix_tree_node instead of a pointer to whatever the user had inserted
in the tree.

Fixes: cebbd29e1c2f ("radix-tree: rewrite gang lookup using iterator")
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agomm/vmpressure.c: fix subtree pressure detection
Vladimir Davydov [Wed, 3 Feb 2016 00:57:49 +0000 (16:57 -0800)]
mm/vmpressure.c: fix subtree pressure detection

When vmpressure is called for the entire subtree under pressure we
mistakenly use vmpressure->scanned instead of vmpressure->tree_scanned
when checking if vmpressure work is to be scheduled.  This results in
suppressing all vmpressure events in the legacy cgroup hierarchy.  Fix it.

Fixes: 8e8ae645249b ("mm: memcontrol: hook up vmpressure to socket pressure")
Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agomm: polish virtual memory accounting
Konstantin Khlebnikov [Wed, 3 Feb 2016 00:57:46 +0000 (16:57 -0800)]
mm: polish virtual memory accounting

* add VM_STACK as alias for VM_GROWSUP/DOWN depending on architecture
* always account VMAs with flag VM_STACK as stack (as it was before)
* cleanup classifying helpers
* update comments and documentation

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Tested-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agomm: warn about VmData over RLIMIT_DATA
Konstantin Khlebnikov [Wed, 3 Feb 2016 00:57:43 +0000 (16:57 -0800)]
mm: warn about VmData over RLIMIT_DATA

This patch provides a way of working around a slight regression
introduced by commit 84638335900f ("mm: rework virtual memory
accounting").

Before that commit RLIMIT_DATA have control only over size of the brk
region.  But that change have caused problems with all existing versions
of valgrind, because it set RLIMIT_DATA to zero.

This patch fixes rlimit check (limit actually in bytes, not pages) and
by default turns it into warning which prints at first VmData misuse:

  "mmap: top (795): VmData 516096 exceed data ulimit 512000.  Will be forbidden soon."

Behavior is controlled by boot param ignore_rlimit_data=y/n and by sysfs
/sys/module/kernel/parameters/ignore_rlimit_data.  For now it set to "y".

[akpm@linux-foundation.org: tweak kernel-parameters.txt text[
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Link: http://lkml.kernel.org/r/20151228211015.GL2194@uranus
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Kees Cook <keescook@google.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoDocumentation: cgroup-v2: add memory.stat::sock description
Johannes Weiner [Wed, 3 Feb 2016 00:57:41 +0000 (16:57 -0800)]
Documentation: cgroup-v2: add memory.stat::sock description

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agomm: memcontrol: drop superfluous entry in the per-memcg stats array
Johannes Weiner [Wed, 3 Feb 2016 00:57:38 +0000 (16:57 -0800)]
mm: memcontrol: drop superfluous entry in the per-memcg stats array

MEM_CGROUP_STAT_NSTATS is just a delimiter for cgroup1 statistics, not
an actual array entry.  Reuse it for the first cgroup2 stat entry, like
in the event array.

Fixes: b2807f07f4f8 ("mm: memcontrol: add "sock" to cgroup2 memory.stat")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agodrivers/scsi/sg.c: mark VMA as VM_IO to prevent migration
Kirill A. Shutemov [Wed, 3 Feb 2016 00:57:35 +0000 (16:57 -0800)]
drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration

Reduced testcase:

    #include <fcntl.h>
    #include <unistd.h>
    #include <sys/mman.h>
    #include <numaif.h>

    #define SIZE 0x2000

    int main()
    {
        int fd;
        void *p;

        fd = open("/dev/sg0", O_RDWR);
        p = mmap(NULL, SIZE, PROT_EXEC, MAP_PRIVATE | MAP_LOCKED, fd, 0);
        mbind(p, SIZE, 0, NULL, 0, MPOL_MF_MOVE);
        return 0;
    }

We shouldn't try to migrate pages in sg VMA as we don't have a way to
update Sg_scatter_hold::pages accordingly from mm core.

Let's mark the VMA as VM_IO to indicate to mm core that the VMA is not
migratable.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Doug Gilbert <dgilbert@interlog.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Shiraz Hashim <shashim@codeaurora.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: syzkaller <syzkaller@googlegroups.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoproc: revert /proc/<pid>/maps [stack:TID] annotation
Johannes Weiner [Wed, 3 Feb 2016 00:57:29 +0000 (16:57 -0800)]
proc: revert /proc/<pid>/maps [stack:TID] annotation

Commit b76437579d13 ("procfs: mark thread stack correctly in
proc/<pid>/maps") added [stack:TID] annotation to /proc/<pid>/maps.

Finding the task of a stack VMA requires walking the entire thread list,
turning this into quadratic behavior: a thousand threads means a
thousand stacks, so the rendering of /proc/<pid>/maps needs to look at a
million combinations.

The cost is not in proportion to the usefulness as described in the
patch.

Drop the [stack:TID] annotation to make /proc/<pid>/maps (and
/proc/<pid>/numa_maps) usable again for higher thread counts.

The [stack] annotation inside /proc/<pid>/task/<tid>/maps is retained, as
identifying the stack VMA there is an O(1) operation.

Siddesh said:
 "The end users needed a way to identify thread stacks programmatically and
  there wasn't a way to do that.  I'm afraid I no longer remember (or have
  access to the resources that would aid my memory since I changed
  employers) the details of their requirement.  However, I did do this on my
  own time because I thought it was an interesting project for me and nobody
  really gave any feedback then as to its utility, so as far as I am
  concerned you could roll back the main thread maps information since the
  information is available in the thread-specific files"

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Siddhesh Poyarekar <siddhesh.poyarekar@gmail.com>
Cc: Shaohua Li <shli@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agonuma: fix /proc/<pid>/numa_maps for hugetlbfs on s390
Michael Holzheu [Wed, 3 Feb 2016 00:57:26 +0000 (16:57 -0800)]
numa: fix /proc/<pid>/numa_maps for hugetlbfs on s390

When working with hugetlbfs ptes (which are actually pmds) is not valid to
directly use pte functions like pte_present() because the hardware bit
layout of pmds and ptes can be different.  This is the case on s390.
Therefore we have to convert the hugetlbfs ptes first into a valid pte
encoding with huge_ptep_get().

Currently the /proc/<pid>/numa_maps code uses hugetlbfs ptes without
huge_ptep_get().  On s390 this leads to the following two problems:

1) The pte_present() function returns false (instead of true) for
   PROT_NONE hugetlb ptes. Therefore PROT_NONE vmas are missing
   completely in the "numa_maps" output.

2) The pte_dirty() function always returns false for all hugetlb ptes.
   Therefore these pages are reported as "mapped=xxx" instead of
   "dirty=xxx".

Therefore use huge_ptep_get() to correctly convert the hugetlb ptes.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: <stable@vger.kernel.org> [4.3+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: update Seth email
Seth Jennings [Wed, 3 Feb 2016 00:57:23 +0000 (16:57 -0800)]
MAINTAINERS: update Seth email

Update/unify my contact info.  The old email address will no longer work
soon.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoocfs2/cluster: fix memory leak in o2hb_region_release
Joseph Qi [Wed, 3 Feb 2016 00:57:21 +0000 (16:57 -0800)]
ocfs2/cluster: fix memory leak in o2hb_region_release

o2hb_region_release currently doesn't free o2hb_debug_buf
hr_db_elapsed_time and hr_db_pinned malloced in o2hb_debug_create.  Also
we should call debugfs_remove before freeing its data, to prevent the risk
accessing debugfs rightly after its data has been freed.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Jiufei Xue <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agolib/test-string_helpers.c: fix and improve string_get_size() tests
Vitaly Kuznetsov [Wed, 3 Feb 2016 00:57:18 +0000 (16:57 -0800)]
lib/test-string_helpers.c: fix and improve string_get_size() tests

Recently added commit 564b026fbd0d ("string_helpers: fix precision loss
for some inputs") fixed precision issues for string_get_size() and broke
tests.

Fix and improve them: test both STRING_UNITS_2 and STRING_UNITS_10 at a
time, better failure reporting, test small an huge values.

Fixes: 564b026fbd0d28e9 ("string_helpers: fix precision loss for some inputs")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: James Bottomley <JBottomley@Odin.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agothp: limit number of object to scan on deferred_split_scan()
Kirill A. Shutemov [Wed, 3 Feb 2016 00:57:15 +0000 (16:57 -0800)]
thp: limit number of object to scan on deferred_split_scan()

If we have a lot of pages in queue to be split, deferred_split_scan()
can spend unreasonable amount of time under spinlock with disabled
interrupts.

Let's cap number of pages to split on scan by sc->nr_to_scan.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agothp: change deferred_split_count() to return number of THP in queue
Kirill A. Shutemov [Wed, 3 Feb 2016 00:57:12 +0000 (16:57 -0800)]
thp: change deferred_split_count() to return number of THP in queue

I've got meaning of shrinker::count_objects() wrong: it should return
number of potentially freeable objects, which is not necessary correlate
with freeable memory.

Returning 256 per THP in queue is not reasonable:
shrinker::scan_objects() never called with nr_to_scan > 128 in my setup.

Let's return 1 per THP and correct scan_object accordingly.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agothp: make split_queue per-node
Kirill A. Shutemov [Wed, 3 Feb 2016 00:57:08 +0000 (16:57 -0800)]
thp: make split_queue per-node

Andrea Arcangeli suggested to make split queue per-node to improve
scalability.  Let's do it.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Suggested-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agostaging/rdma: remove deprecated ipath driver
Doug Ledford [Wed, 3 Feb 2016 16:10:58 +0000 (11:10 -0500)]
staging/rdma: remove deprecated ipath driver

This driver was moved to staging for eventual deletion.  Time
to complete that task.

Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agostaging/rdma: remove deprecated ehca driver
Doug Ledford [Wed, 3 Feb 2016 16:08:53 +0000 (11:08 -0500)]
staging/rdma: remove deprecated ehca driver

This driver was moved to staging for eventual deletion.  Time
to complete that task.

Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agostaging/rdma: remove deprecated amso1100 driver
Doug Ledford [Wed, 3 Feb 2016 16:06:23 +0000 (11:06 -0500)]
staging/rdma: remove deprecated amso1100 driver

Driver was placed in staging for eventual removal, it is time
to complete that task.

Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoMerge branch 'topic/core-fixes' into for-linus
Takashi Iwai [Wed, 3 Feb 2016 13:52:41 +0000 (14:52 +0100)]
Merge branch 'topic/core-fixes' into for-linus

8 years agoALSA: seq: Fix lockdep warnings due to double mutex locks
Takashi Iwai [Wed, 3 Feb 2016 07:32:44 +0000 (08:32 +0100)]
ALSA: seq: Fix lockdep warnings due to double mutex locks

The port subscription code uses double mutex locks for source and
destination ports, and this may become racy once when wrongly set up.
It leads to lockdep warning splat, typically triggered by fuzzer like
syzkaller, although the actual deadlock hasn't been seen, so far.

This patch simplifies the handling by reducing to two single locks, so
that no lockdep warning will be trigger any longer.

By splitting to two actions, a still-in-progress element shall be
added in one list while handling another.  For ignoring this element,
a new check is added in deliver_to_subscribers().

Along with it, the code to add/remove the subscribers list element was
cleaned up and refactored.

BugLink: http://lkml.kernel.org/r/CACT4Y+aKQXV7xkBW9hpQbzaDO7LrUvohxWh-UwMxXjDy-yBD=A@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: rawmidi: Fix race at copying & updating the position
Takashi Iwai [Wed, 3 Feb 2016 13:41:22 +0000 (14:41 +0100)]
ALSA: rawmidi: Fix race at copying & updating the position

The rawmidi read and write functions manage runtime stream status
such as runtime->appl_ptr and runtime->avail.  These point where to
copy the new data and how many bytes have been copied (or to be
read).  The problem is that rawmidi read/write call copy_from_user()
or copy_to_user(), and the runtime spinlock is temporarily unlocked
and relocked while copying user-space.  Since the current code
advances and updates the runtime status after the spin unlock/relock,
the copy and the update may be asynchronous, and eventually
runtime->avail might go to a negative value when many concurrent
accesses are done.  This may lead to memory corruption in the end.

For fixing this race, in this patch, the status update code is
performed in the same lock before the temporary unlock.  Also, the
spinlock is now taken more widely in snd_rawmidi_kernel_read1() for
protecting more properly during the whole operation.

BugLink: http://lkml.kernel.org/r/CACT4Y+b-dCmNf1GpgPKfDO0ih+uZCL2JV4__j-r1kdhPLSgQCQ@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: rawmidi: Make snd_rawmidi_transmit() race-free
Takashi Iwai [Sun, 31 Jan 2016 10:57:41 +0000 (11:57 +0100)]
ALSA: rawmidi: Make snd_rawmidi_transmit() race-free

A kernel WARNING in snd_rawmidi_transmit_ack() is triggered by
syzkaller fuzzer:
  WARNING: CPU: 1 PID: 20739 at sound/core/rawmidi.c:1136
Call Trace:
 [<     inline     >] __dump_stack lib/dump_stack.c:15
 [<ffffffff82999e2d>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
 [<ffffffff81352089>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:482
 [<ffffffff813522b9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:515
 [<ffffffff84f80bd5>] snd_rawmidi_transmit_ack+0x275/0x400 sound/core/rawmidi.c:1136
 [<ffffffff84fdb3c1>] snd_virmidi_output_trigger+0x4b1/0x5a0 sound/core/seq/seq_virmidi.c:163
 [<     inline     >] snd_rawmidi_output_trigger sound/core/rawmidi.c:150
 [<ffffffff84f87ed9>] snd_rawmidi_kernel_write1+0x549/0x780 sound/core/rawmidi.c:1223
 [<ffffffff84f89fd3>] snd_rawmidi_write+0x543/0xb30 sound/core/rawmidi.c:1273
 [<ffffffff817b0323>] __vfs_write+0x113/0x480 fs/read_write.c:528
 [<ffffffff817b1db7>] vfs_write+0x167/0x4a0 fs/read_write.c:577
 [<     inline     >] SYSC_write fs/read_write.c:624
 [<ffffffff817b50a1>] SyS_write+0x111/0x220 fs/read_write.c:616
 [<ffffffff86336c36>] entry_SYSCALL_64_fastpath+0x16/0x7a arch/x86/entry/entry_64.S:185

Also a similar warning is found but in another path:
Call Trace:
 [<     inline     >] __dump_stack lib/dump_stack.c:15
 [<ffffffff82be2c0d>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
 [<ffffffff81355139>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:482
 [<ffffffff81355369>] warn_slowpath_null+0x29/0x30 kernel/panic.c:515
 [<ffffffff8527e69a>] rawmidi_transmit_ack+0x24a/0x3b0 sound/core/rawmidi.c:1133
 [<ffffffff8527e851>] snd_rawmidi_transmit_ack+0x51/0x80 sound/core/rawmidi.c:1163
 [<ffffffff852d9046>] snd_virmidi_output_trigger+0x2b6/0x570 sound/core/seq/seq_virmidi.c:185
 [<     inline     >] snd_rawmidi_output_trigger sound/core/rawmidi.c:150
 [<ffffffff85285a0b>] snd_rawmidi_kernel_write1+0x4bb/0x760 sound/core/rawmidi.c:1252
 [<ffffffff85287b73>] snd_rawmidi_write+0x543/0xb30 sound/core/rawmidi.c:1302
 [<ffffffff817ba5f3>] __vfs_write+0x113/0x480 fs/read_write.c:528
 [<ffffffff817bc087>] vfs_write+0x167/0x4a0 fs/read_write.c:577
 [<     inline     >] SYSC_write fs/read_write.c:624
 [<ffffffff817bf371>] SyS_write+0x111/0x220 fs/read_write.c:616
 [<ffffffff86660276>] entry_SYSCALL_64_fastpath+0x16/0x7a arch/x86/entry/entry_64.S:185

In the former case, the reason is that virmidi has an open code
calling snd_rawmidi_transmit_ack() with the value calculated outside
the spinlock.   We may use snd_rawmidi_transmit() in a loop just for
consuming the input data, but even there, there is a race between
snd_rawmidi_transmit_peek() and snd_rawmidi_tranmit_ack().

Similarly in the latter case, it calls snd_rawmidi_transmit_peek() and
snd_rawmidi_tranmit_ack() separately without protection, so they are
racy as well.

The patch tries to address these issues by the following ways:
- Introduce the unlocked versions of snd_rawmidi_transmit_peek() and
  snd_rawmidi_transmit_ack() to be called inside the explicit lock.
- Rewrite snd_rawmidi_transmit() to be race-free (the former case).
- Make the split calls (the latter case) protected in the rawmidi spin
  lock.

BugLink: http://lkml.kernel.org/r/CACT4Y+YPq1+cYLkadwjWa5XjzF1_Vki1eHnVn-Lm0hzhSpu5PA@mail.gmail.com
BugLink: http://lkml.kernel.org/r/CACT4Y+acG4iyphdOZx47Nyq_VHGbpJQK-6xNpiqUjaZYqsXOGw@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: hda - Add fixup for Mac Mini 7,1 model
Takashi Iwai [Wed, 3 Feb 2016 11:32:51 +0000 (12:32 +0100)]
ALSA: hda - Add fixup for Mac Mini 7,1 model

Mac Mini 7,1 model with CS4208 codec reports the headphone jack
detection wrongly in an inverted way.  Moreover, the advertised pins
for the audio input and SPDIF output have actually no jack detection.

This patch addresses these issues.  The inv_jack_detect flag is set
for fixing the headphone jack detection, and the pin configs for audio
input and SPDIF output are marked as non-detectable.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105161
Report-and-tested-by: moosotc@gmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: hda/realtek - Support headset mode for ALC225
Kailang Yang [Wed, 3 Feb 2016 07:09:35 +0000 (15:09 +0800)]
ALSA: hda/realtek - Support headset mode for ALC225

Support headset mode for ALC225 platforms.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: hda/realtek - Support Dell headset mode for ALC225
Kailang Yang [Wed, 3 Feb 2016 07:20:39 +0000 (15:20 +0800)]
ALSA: hda/realtek - Support Dell headset mode for ALC225

Dell create new platform with ALC298 codec.
This patch will enable headset mode for ALC225/ALC3253 platform.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: hda/realtek - New codec support of ALC225
Kailang Yang [Wed, 3 Feb 2016 07:03:50 +0000 (15:03 +0800)]
ALSA: hda/realtek - New codec support of ALC225

Add new support for ALC225, yet another variant of ALC298 codec.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org> # 4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agodrm/amdgpu: remove exp hardware support from iceland
Alex Deucher [Tue, 2 Feb 2016 21:24:20 +0000 (16:24 -0500)]
drm/amdgpu: remove exp hardware support from iceland

It's working now.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=92270

Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: load MEC ucode manually on iceland
Alex Deucher [Tue, 2 Feb 2016 21:22:15 +0000 (16:22 -0500)]
drm/amdgpu: load MEC ucode manually on iceland

The smc doesn't handle it.

Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: don't load MEC2 on topaz
Alex Deucher [Tue, 2 Feb 2016 16:15:41 +0000 (11:15 -0500)]
drm/amdgpu: don't load MEC2 on topaz

Not validated.

Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: drop topaz support from gmc8 module
Alex Deucher [Tue, 2 Feb 2016 15:57:30 +0000 (10:57 -0500)]
drm/amdgpu: drop topaz support from gmc8 module

topaz is actually gmc7.

Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: pull topaz gmc bits into gmc_v7
Alex Deucher [Tue, 2 Feb 2016 15:56:15 +0000 (10:56 -0500)]
drm/amdgpu: pull topaz gmc bits into gmc_v7

Add the topaz golden settings into the gmc7 module.

Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
Ken Wang [Wed, 3 Feb 2016 11:17:53 +0000 (19:17 +0800)]
drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: iceland use CI based MC IP
Ken Wang [Wed, 3 Feb 2016 11:16:54 +0000 (19:16 +0800)]
drm/amdgpu: iceland use CI based MC IP

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/amdgpu: move gmc7 support out of CIK dependency
Alex Deucher [Tue, 2 Feb 2016 15:59:53 +0000 (10:59 -0500)]
drm/amdgpu: move gmc7 support out of CIK dependency

It's used by iceland which is VI.

Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agoPM / Domains: Silence compiler warning for an unused function
Ulf Hansson [Mon, 1 Feb 2016 13:52:41 +0000 (14:52 +0100)]
PM / Domains: Silence compiler warning for an unused function

The only remaining caller of genpd_poweron() is conditionally compiled
based on CONFIG_PM_GENERIC_DOMAINS_OF, so we get a warning when that is
unset.

By moving the locking/unlocking of the genpd outside genpd_poweron(), thus
to the caller, genpd_poweron() becomes redundant.

Within this context let's then rename the wrapper function,
__genpd_poweron(), to genpd_poweron() as it will then be consistent with
its friend genpd_poweroff().

This change silence the warning about the unused function.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ea823c7cbffa "PM / Domains: Remove pm_genpd_poweron() API"
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: 4.4+ <stable@vger.kernel.org> # 4.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoACPI / CPPC: remove redundant mbox_send_message() declaration
Timur Tabi [Tue, 26 Jan 2016 18:43:00 +0000 (12:43 -0600)]
ACPI / CPPC: remove redundant mbox_send_message() declaration

Remove a redundant function declaration in cppc_acpi.h for
mbox_send_message().  That function is defined in mailbox_client.h,
which is already included.

Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoACPI / LPSS: set PM domain via helper setter
Andy Shevchenko [Mon, 1 Feb 2016 14:17:38 +0000 (16:17 +0200)]
ACPI / LPSS: set PM domain via helper setter

The commit 989561de9b51 ("PM / Domains: add setter for dev.pm_domain") changed
acpi_lpss.c module to use PM domain setter, though it missed one assignment.
Add it here.

Fixes: 989561de9b51 (PM / Domains: add setter for dev.pm_domain)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoPNP: Add Haswell-ULT to Intel MCH size workaround
Josh Boyer [Wed, 3 Feb 2016 00:00:29 +0000 (01:00 +0100)]
PNP: Add Haswell-ULT to Intel MCH size workaround

Add device ID 0x0a04 for Haswell-ULT to the list of devices with MCH
problems.

From a Lenovo ThinkPad T440S:
[    0.188604] pnp: PnP ACPI init
[    0.189044] system 00:00: [mem 0x00000000-0x0009ffff] could not be reserved
[    0.189048] system 00:00: [mem 0x000c0000-0x000c3fff] could not be reserved
[    0.189050] system 00:00: [mem 0x000c4000-0x000c7fff] could not be reserved
[    0.189052] system 00:00: [mem 0x000c8000-0x000cbfff] could not be reserved
[    0.189054] system 00:00: [mem 0x000cc000-0x000cffff] could not be reserved
[    0.189056] system 00:00: [mem 0x000d0000-0x000d3fff] has been reserved
[    0.189058] system 00:00: [mem 0x000d4000-0x000d7fff] has been reserved
[    0.189060] system 00:00: [mem 0x000d8000-0x000dbfff] has been reserved
[    0.189061] system 00:00: [mem 0x000dc000-0x000dffff] has been reserved
[    0.189063] system 00:00: [mem 0x000e0000-0x000e3fff] could not be reserved
[    0.189065] system 00:00: [mem 0x000e4000-0x000e7fff] could not be reserved
[    0.189067] system 00:00: [mem 0x000e8000-0x000ebfff] could not be reserved
[    0.189069] system 00:00: [mem 0x000ec000-0x000effff] could not be reserved
[    0.189071] system 00:00: [mem 0x000f0000-0x000fffff] could not be reserved
[    0.189073] system 00:00: [mem 0x00100000-0xdf9fffff] could not be reserved
[    0.189075] system 00:00: [mem 0xfec00000-0xfed3ffff] could not be reserved
[    0.189078] system 00:00: [mem 0xfed4c000-0xffffffff] could not be reserved
[    0.189082] system 00:00: Plug and Play ACPI device, IDs PNP0c01 (active)
[    0.189216] system 00:01: [io  0x1800-0x189f] could not be reserved
[    0.189220] system 00:01: [io  0x0800-0x087f] has been reserved
[    0.189222] system 00:01: [io  0x0880-0x08ff] has been reserved
[    0.189224] system 00:01: [io  0x0900-0x097f] has been reserved
[    0.189226] system 00:01: [io  0x0980-0x09ff] has been reserved
[    0.189229] system 00:01: [io  0x0a00-0x0a7f] has been reserved
[    0.189231] system 00:01: [io  0x0a80-0x0aff] has been reserved
[    0.189233] system 00:01: [io  0x0b00-0x0b7f] has been reserved
[    0.189235] system 00:01: [io  0x0b80-0x0bff] has been reserved
[    0.189238] system 00:01: [io  0x15e0-0x15ef] has been reserved
[    0.189240] system 00:01: [io  0x1600-0x167f] has been reserved
[    0.189242] system 00:01: [io  0x1640-0x165f] has been reserved
[    0.189246] system 00:01: [mem 0xf8000000-0xfbffffff] could not be reserved
[    0.189249] system 00:01: [mem 0x00000000-0x00000fff] could not be reserved
[    0.189251] system 00:01: [mem 0xfed1c000-0xfed1ffff] has been reserved
[    0.189254] system 00:01: [mem 0xfed10000-0xfed13fff] has been reserved
[    0.189256] system 00:01: [mem 0xfed18000-0xfed18fff] has been reserved
[    0.189258] system 00:01: [mem 0xfed19000-0xfed19fff] has been reserved
[    0.189261] system 00:01: [mem 0xfed45000-0xfed4bfff] has been reserved
[    0.189264] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[....]
[    0.583653] resource sanity check: requesting [mem 0xfed10000-0xfed15fff], which spans more than pnp 00:01 [mem 0xfed10000-0xfed13fff]
[    0.583654] ------------[ cut here ]------------
[    0.583660] WARNING: CPU: 0 PID: 1 at arch/x86/mm/ioremap.c:198 __ioremap_caller+0x2c5/0x380()
[    0.583661] Info: mapping multiple BARs. Your kernel is fine.
[    0.583662] Modules linked in:

[    0.583666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.3.3-303.fc23.x86_64 #1
[    0.583668] Hardware name: LENOVO 20AR001GXS/20AR001GXS, BIOS GJET86WW (2.36 ) 12/04/2015
[    0.583670]  0000000000000000 0000000014cf7e59 ffff880214a1baf8 ffffffff813a625f
[    0.583673]  ffff880214a1bb40 ffff880214a1bb30 ffffffff810a07c2 00000000fed10000
[    0.583675]  ffffc90000cb8000 0000000000006000 0000000000000000 ffff8800d6381040
[    0.583678] Call Trace:
[    0.583683]  [<ffffffff813a625f>] dump_stack+0x44/0x55
[    0.583686]  [<ffffffff810a07c2>] warn_slowpath_common+0x82/0xc0
[    0.583688]  [<ffffffff810a085c>] warn_slowpath_fmt+0x5c/0x80
[    0.583692]  [<ffffffff810a6fba>] ? iomem_map_sanity_check+0xba/0xd0
[    0.583695]  [<ffffffff81065835>] __ioremap_caller+0x2c5/0x380
[    0.583698]  [<ffffffff81065907>] ioremap_nocache+0x17/0x20
[    0.583701]  [<ffffffff8103a119>] snb_uncore_imc_init_box+0x79/0xb0
[    0.583705]  [<ffffffff81038900>] uncore_pci_probe+0xd0/0x1b0
[    0.583707]  [<ffffffff813efda5>] local_pci_probe+0x45/0xa0
[    0.583710]  [<ffffffff813f118d>] pci_device_probe+0xfd/0x140
[    0.583713]  [<ffffffff814d9b52>] driver_probe_device+0x222/0x480
[    0.583715]  [<ffffffff814d9e34>] __driver_attach+0x84/0x90
[    0.583717]  [<ffffffff814d9db0>] ? driver_probe_device+0x480/0x480
[    0.583720]  [<ffffffff814d762c>] bus_for_each_dev+0x6c/0xc0
[    0.583722]  [<ffffffff814d930e>] driver_attach+0x1e/0x20
[    0.583724]  [<ffffffff814d8e4b>] bus_add_driver+0x1eb/0x280
[    0.583727]  [<ffffffff81d6af1a>] ? uncore_cpu_setup+0x12/0x12
[    0.583729]  [<ffffffff814da680>] driver_register+0x60/0xe0
[    0.583733]  [<ffffffff813ef78c>] __pci_register_driver+0x4c/0x50
[    0.583736]  [<ffffffff81d6affc>] intel_uncore_init+0xe2/0x2e6
[    0.583738]  [<ffffffff81d6af1a>] ? uncore_cpu_setup+0x12/0x12
[    0.583741]  [<ffffffff81002123>] do_one_initcall+0xb3/0x200
[    0.583745]  [<ffffffff810be500>] ? parse_args+0x1a0/0x4a0
[    0.583749]  [<ffffffff81d5c1c8>] kernel_init_freeable+0x189/0x223
[    0.583752]  [<ffffffff81775c40>] ? rest_init+0x80/0x80
[    0.583754]  [<ffffffff81775c4e>] kernel_init+0xe/0xe0
[    0.583758]  [<ffffffff81781adf>] ret_from_fork+0x3f/0x70
[    0.583760]  [<ffffffff81775c40>] ? rest_init+0x80/0x80
[    0.583765] ---[ end trace 077c426a39e018aa ]---

00:00.0 Host bridge [0600]: Intel Corporation Haswell-ULT DRAM Controller [8086:0a04] (rev 0b)
Subsystem: Lenovo Device [17aa:220c]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
Kernel driver in use: hsw_uncore

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1300955
Tested-by: <robo@tcp.sk>
Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoALSA: timer: Sync timer deletion at closing the system timer
Takashi Iwai [Tue, 2 Feb 2016 13:14:10 +0000 (14:14 +0100)]
ALSA: timer: Sync timer deletion at closing the system timer

ALSA timer core framework has no sync point at stopping because it's
called inside the spinlock.  Thus we need a sync point at close for
avoiding the stray timer task.  This is simply done by implementing
the close callback just calling del_timer_sync().  (It's harmless to
call it unconditionally, as the core timer itself cares of the already
deleted timer instance.)

Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoIB/core: Set correct payload length for RoCEv2 over IPv6
Moni Shoua [Thu, 28 Jan 2016 15:51:50 +0000 (17:51 +0200)]
IB/core: Set correct payload length for RoCEv2 over IPv6

For GSI QP traffic, the count of the udp header bytes was missing from
the IPv6 header, fix that.

Fixes: 25f40220e56b ('IB/core: Initialize UD header structure with IP
                     and UDP headers')
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx5: Use MLX5_GET to correctly get end of padding mode
Maor Gottlieb [Thu, 28 Jan 2016 15:51:49 +0000 (17:51 +0200)]
IB/mlx5: Use MLX5_GET to correctly get end of padding mode

MLX5_GET64 was used on end_padding_mode, which is a 2-bit field.
This is wrong as the calculated offset is incorrect. Using MLX5_GET
instead of MLX5_GET64 to fix that.

Fixes: 0fb2ed66a14c ('IB/mlx5: Add create and destroy functionality
                     for Raw Packet QP')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx5: Fix use of null pointer PD
Majd Dibbiny [Thu, 28 Jan 2016 15:51:48 +0000 (17:51 +0200)]
IB/mlx5: Fix use of null pointer PD

When a Raw Ethernet QP is created, a NULL pointer PD could be used.
Fixing that by only using the PD after validating it's valid.
smatch also reported this error:
drivers/infiniband/hw/mlx5/qp.c:1629 mlx5_ib_create_qp()
 error: we previously assumed 'pd' could be null (see line 1616)

Fixes: 0fb2ed66a14c ('IB/mlx5: Add create and destroy functionality for Raw Packet QP')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx5: Fix reqlen validation in mlx5_ib_alloc_ucontext
Majd Dibbiny [Thu, 28 Jan 2016 15:51:47 +0000 (17:51 +0200)]
IB/mlx5: Fix reqlen validation in mlx5_ib_alloc_ucontext

Older libraries that don't have all the new req_v2 fields
should be able to work as well. Today, if the library uses v2, it
will fail to allocate context since the size of reqlen is smaller
than the req_v2 size.

Fix the validation to be with the original req_v2 size and not
the current.

Fixes: f72300c56c3b ('IB/mlx5: Expose CQE version to user-space')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx5: Add CREATE_CQ and CREATE_QP to uverbs_ex_cmd_mask
Matan Barak [Thu, 28 Jan 2016 15:51:46 +0000 (17:51 +0200)]
IB/mlx5: Add CREATE_CQ and CREATE_QP to uverbs_ex_cmd_mask

The mlx5_ib driver supports the extended create_cq and create_qp user
verbs. In the current mechanism, a vendor supporting an extended uverb
should set the appropriate bit in the uverbs_ex_cmd_mask field.
Adding the actual support by setting the required bits in order to
support features like completion time-stamping and cross-channel.

Fixes: 972ecb821379 ('IB/mlx5: Add create_cq extended command')
Fixes: ddf9529be19c ('IB/core: Allow setting create flags in QP init
                      attribute')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agodrm/amdgpu/gfx7: enable cp inst/reg error interrupts
Alex Deucher [Tue, 2 Feb 2016 19:46:48 +0000 (14:46 -0500)]
drm/amdgpu/gfx7: enable cp inst/reg error interrupts

Enable CP register/instruction error interrupts. Useful
for debugging command stream problems.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
8 years agodrm/amdgpu/gfx8: enable cp inst/reg error interrupts
Alex Deucher [Tue, 2 Feb 2016 19:42:28 +0000 (14:42 -0500)]
drm/amdgpu/gfx8: enable cp inst/reg error interrupts

Enable CP register/instruction error interrupts. Useful
for debugging command stream problems.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
8 years agoarm64: futex.h: Add missing PAN toggling
James Morse [Tue, 2 Feb 2016 15:53:59 +0000 (15:53 +0000)]
arm64: futex.h: Add missing PAN toggling

futex.h's futex_atomic_cmpxchg_inatomic() does not use the
__futex_atomic_op() macro and needs its own PAN toggling. This was missed
when the feature was implemented.

Fixes: 338d4f49d6f ("arm64: kernel: Add support for Privileged Access Never")
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
8 years agoarm64: allow vmalloc regions to be set with set_memory_*
Ard Biesheuvel [Wed, 27 Jan 2016 09:50:19 +0000 (10:50 +0100)]
arm64: allow vmalloc regions to be set with set_memory_*

The range of set_memory_* is currently restricted to the module address
range because of difficulties in breaking down larger block sizes.
vmalloc maps PAGE_SIZE pages so it is safe to use as well. Update the
function ranges and add a comment explaining why the range is restricted
the way it is.

Suggested-by: Laura Abbott <labbott@fedoraproject.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>