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  1. 11 Aug, 2016 1 commit
  3. 10 Aug, 2016 13 commits
  5. 09 Aug, 2016 15 commits
    • Linus Torvalds's avatar
      Revert "printk: create pr_<level> functions" · a0cba217
      Linus Torvalds authored 
      This reverts commit 874f9c7d.

Geert Uytterhoeven reports:
 "This change seems to have an (unintendent?) side-effect.

  Before, pr_*() calls without a trailing newline characters would be
  printed with a newline character appended, both on the console and in
  the output of the dmesg command.

  After this commit, no new line character is appended, and the output
  of the next pr_*() call of the same type may be appended, like in:

    - Truncating RAM at 0x0000000040000000-0x00000000c0000000 to -0x0000000070000000
    - Ignoring RAM at 0x0000000200000000-0x0000000240000000 (!CONFIG_HIGHMEM)
    + Truncating RAM at 0x0000000040000000-0x00000000c0000000 to -0x0000000070000000Ignoring RAM at 0x0000000200000000-0x0000000240000000 (!CONFIG_HIGHMEM)"

Joe Perches says:
 "No, that is not intentional.

  The newline handling code inside vprintk_emit is a bit involved and
  for now I suggest a revert until this has all the same behavior as
  earlier"
Reported-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Requested-by: default avatarJoe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a0cba217
    • Linus Torvalds's avatar
      Merge tag 'trace-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 84bd8d33
      Linus Torvalds authored 
      Pull tracing fix from Steven Rostedt:
 "Fix tick_stop tracepoint symbols for user export.

  Luiz Capitulino noticed that the tick_stop tracepoint wasn't being
  parsed properly by the tracing user space tools.

  This was due to the TRACE_DEFINE_ENUM() being set to a define, when it
  should have been set to the enum itself.  The define was of the MASK
  that used the BIT to shift.  The BIT was the enum and by adding that,
  everything gets converted nicely.  The MASK is still kept just in case
  it gets converted to an enum in the future"

* tag 'trace-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix tick_stop tracepoint symbols for user export
      84bd8d33
    • Linus Torvalds's avatar
      Merge tag 'gcc-plugin-infrastructure-v4.8-rc2' of... · b79f34d6
      Linus Torvalds authored 
      Merge tag 'gcc-plugin-infrastructure-v4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull gcc plugin improvements from Kees Cook:
 "Several fixes/improvements for the gcc plugin infrastructure:

   - fix a problem with gcc plugins interfering with cc-option tests.

   - abort more gracefully when gcc plugin headers or compiler support
     is missing.

   - improve the gcc plugin rule generation to be more dynamic, pass
     arguments, and build from subdirectories"

* tag 'gcc-plugin-infrastructure-v4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Add support for plugin subdirectories
  gcc-plugins: Automate make rule generation
  gcc-plugins: Add support for passing plugin arguments
  gcc-plugins: abort builds cleanly when not supported
  kbuild: no gcc-plugins during cc-option tests
      b79f34d6
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.8-3' of... · e1d009ea
      Linus Torvalds authored 
      Merge tag 'platform-drivers-x86-v4.8-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull x86 platform driver update from Darren Hart:
 "dell-wmi: ignore battery remove/insert event"

* tag 'platform-drivers-x86-v4.8-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  dell-wmi: Ignore WMI event 0xe00e
      e1d009ea
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-4.8-rc2' of git://people.freedesktop.org/~airlied/linux · cb0d93aa
      Linus Torvalds authored 
      Pull drm fixes from Dave Airlie:
 "This contains a bunch of amdgpu fixes, and some i915 regression fixes.

  It also contains some fixes for an older regression with some EDID
  changes and some 6bpc panels.

  Then there are the lockdep, cirrus and rcar-du regression fixes from
  this window"

* tag 'drm-fixes-for-4.8-rc2' of git://people.freedesktop.org/~airlied/linux:
  drm/cirrus: Fix NULL pointer dereference when registering the fbdev
  drm/edid: Set 8 bpc color depth for displays with "DFP 1.x compliant TMDS".
  drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"
  drm/edid: Add 6 bpc quirk for display AEO model 0.
  drm: Paper over locking inversion after registration rework
  drm: rcar-du: Link HDMI encoder with bridge
  drm/ttm: Wait for a BO to become idle before unbinding it from GTT
  drm/i915/fbdev: Check for the framebuffer before use
  drm/amdgpu: update golden setting of polaris10
  drm/amdgpu: update golden setting of stoney
  drm/amdgpu: update golden setting of polaris11
  drm/amdgpu: update golden setting of carrizo
  drm/amdgpu: update golden setting of iceland
  drm/amd/amdgpu: change pptable output format from ASCII to binary
  drm/amdgpu/ci: add mullins to default case for smc ucode
  drm/amdgpu/gmc7: add missing mullins case
  drm/i915: Never fully mask the the EI up rps interrupt on SNB/IVB
  drm/i915: Wait up to 3ms for the pcu to ack the cdclk change request on SKL
      cb0d93aa
    • Brian King's avatar
      ipr: Fix sync scsi scan · a3d1ddd9
      Brian King authored 
      Commit b195d5e2 ("ipr: Wait to do async scan until scsi host is
initialized") fixed async scan for ipr, but broke sync scan for ipr.

This fixes sync scan back up.
Signed-off-by: default avatarBrian King <brking@linux.vnet.ibm.com>
Reported-and-tested-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a3d1ddd9
    • Vladimir Davydov's avatar
      mm: memcontrol: only mark charged pages with PageKmemcg · c4159a75
      Vladimir Davydov authored 
      To distinguish non-slab pages charged to kmemcg we mark them PageKmemcg,
which sets page->_mapcount to -512.  Currently, we set/clear PageKmemcg
in __alloc_pages_nodemask()/free_pages_prepare() for any page allocated
with __GFP_ACCOUNT, including those that aren't actually charged to any
cgroup, i.e. allocated from the root cgroup context.  To avoid overhead
in case cgroups are not used, we only do that if memcg_kmem_enabled() is
true.  The latter is set iff there are kmem-enabled memory cgroups
(online or offline).  The root cgroup is not considered kmem-enabled.

As a result, if a page is allocated with __GFP_ACCOUNT for the root
cgroup when there are kmem-enabled memory cgroups and is freed after all
kmem-enabled memory cgroups were removed, e.g.

  # no memory cgroups has been created yet, create one
  mkdir /sys/fs/cgroup/memory/test
  # run something allocating pages with __GFP_ACCOUNT, e.g.
  # a program using pipe
  dmesg | tail
  # remove the memory cgroup
  rmdir /sys/fs/cgroup/memory/test

we'll get bad page state bug complaining about page->_mapcount != -1:

  BUG: Bad page state in process swapper/0  pfn:1fd945c
  page:ffffea007f651700 count:0 mapcount:-511 mapping:          (null) index:0x0
  flags: 0x1000000000000000()

To avoid that, let's mark with PageKmemcg only those pages that are
actually charged to and hence pin a non-root memory cgroup.

Fixes: 4949148a ("mm: charge/uncharge kmemcg from generic page allocator paths")
Reported-and-tested-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      c4159a75
    • Steven Rostedt (Red Hat)'s avatar
      tracing: Fix tick_stop tracepoint symbols for user export · c87edb36
      Steven Rostedt (Red Hat) authored 
      The symbols used in the tick_stop tracepoint were not being converted
properly into integers in the trace_stop format file. Instead we had this:

print fmt: "success=%d dependency=%s", REC->success,
    __print_symbolic(REC->dependency, { 0, "NONE" },
     { (1 << TICK_DEP_BIT_POSIX_TIMER), "POSIX_TIMER" },
     { (1 << TICK_DEP_BIT_PERF_EVENTS), "PERF_EVENTS" },
     { (1 << TICK_DEP_BIT_SCHED), "SCHED" },
     { (1 << TICK_DEP_BIT_CLOCK_UNSTABLE), "CLOCK_UNSTABLE" })

User space tools have no idea how to parse "TICK_DEP_BIT_SCHED" or the other
symbols used to do the bit shifting. The reason is that the conversion was
done with using the TICK_DEP_MASK_* symbols which are just macros that
convert to the BIT shift itself (with the exception of NONE, which was
converted properly, because it doesn't use bits, and is defined as zero).

The TICK_DEP_BIT_* needs to be denoted by TRACE_DEFINE_ENUM() in order to
have this properly converted for user space tools to parse this event.

Cc: stable@vger.kernel.org
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Fixes: e6e6cc22 ("nohz: Use enum code for tick stop failure tracing message")
Reported-by: default avatarLuiz Capitulino <lcapitulino@redhat.com>
Tested-by: default avatarLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      c87edb36
    • James Hogan's avatar
      metag: Drop show_mem() from mem_init() · 97b1d23f
      James Hogan authored 
      The recent commit 599d0c95 ("mm, vmscan: move LRU lists to node"),
changed memory management code so that show_mem() is no longer safe to
call prior to setup_per_cpu_pageset(), as pgdat->per_cpu_nodestats will
still be NULL. This causes an oops on metag due to the call to
show_mem() from mem_init():

  node_page_state_snapshot(...) + 0x48
  pgdat_reclaimable(struct pglist_data * pgdat = 0x402517a0)
  show_free_areas(unsigned int filter = 0) + 0x2cc
  show_mem(unsigned int filter = 0) + 0x18
  mem_init()
  mm_init()
  start_kernel() + 0x204

This wasn't a problem before with zone_reclaimable() as zone_pcp_init()
was already setting zone->pageset to &boot_pageset, via setup_arch() and
paging_init(), which happens before mm_init():

  zone_pcp_init(...)
  free_area_init_core(...) + 0x138
  free_area_init_node(int nid = 0, ...) + 0x1a0
  free_area_init_nodes(...) + 0x440
  paging_init(unsigned long mem_end = 0x4fe00000) + 0x378
  setup_arch(char ** cmdline_p = 0x4024e038) + 0x2b8
  start_kernel() + 0x54

No other arches appear to call show_mem() during boot, and it doesn't
really add much value to the log, so lets just drop it from mem_init().
Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
Acked-by: default avatarMel Gorman <mgorman@techsingularity.net>
Cc: linux-metag@vger.kernel.org
      97b1d23f
    • Boris Brezillon's avatar
      drm/cirrus: Fix NULL pointer dereference when registering the fbdev · 36e9d08b
      Boris Brezillon authored 
      cirrus_modeset_init() is initializing/registering the emulated fbdev
and, since commit c61b93fe ("drm/atomic: Fix remaining places where
!funcs->best_encoder is valid"), DRM internals can access/test some of
the fields in mode_config->funcs as part of the fbdev registration
process.
Make sure dev->mode_config.funcs is properly set to avoid dereferencing
a NULL pointer.
Reported-by: default avatarMike Marshall <hubcap@omnibond.com>
Reported-by: default avatarEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Fixes: c61b93fe ("drm/atomic: Fix remaining places where !funcs->best_encoder is valid")
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      36e9d08b
    • Emese Revfy's avatar
      gcc-plugins: Add support for plugin subdirectories · caefd8c9
      Emese Revfy authored 
      This adds support for building more complex gcc plugins that live in a
subdirectory instead of just in a single source file.
Reported-by: default avatarPaX Team <pageexec@freemail.hu>
Signed-off-by: default avatarEmese Revfy <re.emese@gmail.com>
[kees: clarified commit message]
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      caefd8c9
    • Emese Revfy's avatar
      gcc-plugins: Automate make rule generation · 7040c83b
      Emese Revfy authored 
      There's no reason to repeat the same names in the Makefile when the .so
files have already been listed. The .o list can be generated from them.
Reported-by: default avatarPaX Team <pageexec@freemail.hu>
Signed-off-by: default avatarEmese Revfy <re.emese@gmail.com>
[kees: clarified commit message]
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      7040c83b
    • Emese Revfy's avatar
      gcc-plugins: Add support for passing plugin arguments · 65d59ec8
      Emese Revfy authored 
      The latent_entropy plugin needs to pass arguments, so this adds the
support.
Signed-off-by: default avatarEmese Revfy <re.emese@gmail.com>
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      65d59ec8
    • Kees Cook's avatar
      gcc-plugins: abort builds cleanly when not supported · ed58c0e9
      Kees Cook authored 
      When the compiler doesn't support gcc plugins (either due to missing
headers or too old a version), report the problem and abort the build
instead of emitting a warning and letting the build founder with arcane
compiler errors.
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      ed58c0e9
    • Emese Revfy's avatar
      kbuild: no gcc-plugins during cc-option tests · d26e9414
      Emese Revfy authored 
      The gcc-plugins arguments should not be included when performing
cc-option tests.

Steps to reproduce:
1) make mrproper
2) make defconfig
3) enable GCC_PLUGINS, GCC_PLUGIN_CYC_COMPLEXITY
4) enable FUNCTION_TRACER (it will select other options as well)
5) make && make modules

Build errors:
MODPOST 18 modules
ERROR: "__fentry__" [net/netfilter/xt_nat.ko] undefined!
ERROR: "__fentry__" [net/netfilter/xt_mark.ko] undefined!
ERROR: "__fentry__" [net/netfilter/xt_addrtype.ko] undefined!
ERROR: "__fentry__" [net/netfilter/xt_LOG.ko] undefined!
ERROR: "__fentry__" [net/netfilter/nf_nat_sip.ko] undefined!
ERROR: "__fentry__" [net/netfilter/nf_nat_irc.ko] undefined!
ERROR: "__fentry__" [net/netfilter/nf_nat_ftp.ko] undefined!
ERROR: "__fentry__" [net/netfilter/nf_nat.ko] undefined!
Reported-by: default avatarLaura Abbott <labbott@redhat.com>
Signed-off-by: default avatarEmese Revfy <re.emese@gmail.com>
[kees: renamed variable, clarified commit message]
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      d26e9414
  7. 08 Aug, 2016 11 commits
    • Mario Kleiner's avatar
      drm/edid: Set 8 bpc color depth for displays with "DFP 1.x compliant TMDS". · 210a021d
      Mario Kleiner authored 
      According to E-EDID spec 1.3, table 3.9, a digital video sink with the
"DFP 1.x compliant TMDS" bit set is "signal compatible with VESA DFP 1.x
TMDS CRGB, 1 pixel / clock, up to 8 bits / color MSB aligned".

For such displays, the DFP spec 1.0, section 3.10 "EDID support" says:

"If the DFP monitor only supports EDID 1.X (1.1, 1.2, etc.)
 without extensions, the host will make the following assumptions:

 1. 24-bit MSB-aligned RGB TFT
 2. DE polarity is active high
 3. H and V syncs are active high
 4. Established CRT timings will be used
 5. Dithering will not be enabled on the host"

So if we don't know the bit depth of the display from additional
colorimetry info we should assume 8 bpc / 24 bpp by default.

This patch adds info->bpc = 8 assignement for that case.
Signed-off-by: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      210a021d
    • Mario Kleiner's avatar
      drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown" · 196f954e
      Mario Kleiner authored 
      This reverts commit 013dd9e0
("drm/i915/dp: fall back to 18 bpp when sink capability is unknown")

This commit introduced a regression into stable kernels,
as it reduces output color depth to 6 bpc for any video
sink connected to a Displayport connector if that sink
doesn't report a specific color depth via EDID, or if
our EDID parser doesn't actually recognize the proper
bpc from EDID.

Affected are active DisplayPort->VGA converters and
active DisplayPort->DVI converters. Both should be
able to handle 8 bpc, but are degraded to 6 bpc with
this patch.

The reverted commit was meant to fix
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105331

A followup patch implements a fix for that specific bug,
which is caused by a faulty EDID of the affected DP panel
by adding a new EDID quirk for that panel.

DP 18 bpp fallback handling and other improvements to
DP sink bpc detection will be handled for future
kernels in a separate series of patches.

Please backport to stable.
Signed-off-by: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      196f954e
    • Mario Kleiner's avatar
      drm/edid: Add 6 bpc quirk for display AEO model 0. · e10aec65
      Mario Kleiner authored 
      Bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=105331
reports that the "AEO model 0" display is driven with 8 bpc
without dithering by default, which looks bad because that
panel is apparently a 6 bpc DP panel with faulty EDID.

A fix for this was made by commit 013dd9e0
("drm/i915/dp: fall back to 18 bpp when sink capability is unknown").

That commit triggers new regressions in precision for DP->DVI and
DP->VGA displays. A patch is out to revert that commit, but it will
revert video output for the AEO model 0 panel to 8 bpc without
dithering.

The EDID 1.3 of that panel, as decoded from the xrandr output
attached to that bugzilla bug report, is somewhat faulty, and beyond
other problems also sets the "DFP 1.x compliant TMDS" bit, which
according to DFP spec means to drive the panel with 8 bpc and
no dithering in absence of other colorimetry information.

Try to make the original bug reporter happy despite the
faulty EDID by adding a quirk to mark that panel as 6 bpc,
so 6 bpc output with dithering creates a nice picture.

Tested by injecting the edid from the fdo bug into a DP connector
via drm_kms_helper.edid_firmware and verifying the 6 bpc + dithering
is selected.

This patch should be backported to stable.
Signed-off-by: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
Cc: stable@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      e10aec65
    • Linus Torvalds's avatar
      Merge tag 'lkdtm-v4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux · 81abf252
      Linus Torvalds authored 
      Pull lkdtm update from Kees Cook:
 "Fix rebuild problem with LKDTM's rodata test"

[ This, and the usercopy branch, both came in before the merge window
  closed, but ended up in my 'need to look more' queue and thus got
  merged only after rc1 was out ]

* tag 'lkdtm-v4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  lkdtm: Fix targets for objcopy usage
  lkdtm: fix false positive warning from -Wmaybe-uninitialized
      81abf252
    • Linus Torvalds's avatar
      Merge tag 'usercopy-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux · 1eccfa09
      Linus Torvalds authored 
      Pull usercopy protection from Kees Cook:
 "Tbhis implements HARDENED_USERCOPY verification of copy_to_user and
  copy_from_user bounds checking for most architectures on SLAB and
  SLUB"

* tag 'usercopy-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  mm: SLUB hardened usercopy support
  mm: SLAB hardened usercopy support
  s390/uaccess: Enable hardened usercopy
  sparc/uaccess: Enable hardened usercopy
  powerpc/uaccess: Enable hardened usercopy
  ia64/uaccess: Enable hardened usercopy
  arm64/uaccess: Enable hardened usercopy
  ARM: uaccess: Enable hardened usercopy
  x86/uaccess: Enable hardened usercopy
  mm: Hardened usercopy
  mm: Implement stack frame object validation
  mm: Add is_migrate_cma_page
      1eccfa09
    • Linus Torvalds's avatar
      unsafe_[get|put]_user: change interface to use a error target label · 1bd4403d
      Linus Torvalds authored 
      When I initially added the unsafe_[get|put]_user() helpers in commit
5b24a7a2 ("Add 'unsafe' user access functions for batched
accesses"), I made the mistake of modeling the interface on our
traditional __[get|put]_user() functions, which return zero on success,
or -EFAULT on failure.

That interface is fairly easy to use, but it's actually fairly nasty for
good code generation, since it essentially forces the caller to check
the error value for each access.

In particular, since the error handling is already internally
implemented with an exception handler, and we already use "asm goto" for
various other things, we could fairly easily make the error cases just
jump directly to an error label instead, and avoid the need for explicit
checking after each operation.

So switch the interface to pass in an error label, rather than checking
the error value in the caller.  Best do it now before we start growing
more users (the signal handling code in particular would be a good place
to use the new interface).

So rather than

	if (unsafe_get_user(x, ptr))
		... handle error ..

the interface is now

	unsafe_get_user(x, ptr, label);

where an error during the user mode fetch will now just cause a jump to
'label' in the caller.

Right now the actual _implementation_ of this all still ends up being a
"if (err) goto label", and does not take advantage of any exception
label tricks, but for "unsafe_put_user()" in particular it should be
fairly straightforward to convert to using the exception table model.

Note that "unsafe_get_user()" is much harder to convert to a clever
exception table model, because current versions of gcc do not allow the
use of "asm goto" (for the exception) with output values (for the actual
value to be fetched).  But that is hopefully not a limitation in the
long term.

[ Also note that it might be a good idea to switch unsafe_get_user() to
  actually _return_ the value it fetches from user space, but this
  commit only changes the error handling semantics ]
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1bd4403d
    • Andreas Ziegler's avatar
      printk: Remove unnecessary #ifdef CONFIG_PRINTK · 574673c2
      Andreas Ziegler authored 
      In commit 874f9c7d ("printk: create pr_<level> functions"), new
pr_level defines were added to printk.c.

These new defines are guarded by an #ifdef CONFIG_PRINTK - however,
there is already a surrounding #ifdef CONFIG_PRINTK starting a lot
earlier in line 249 which means the newly introduced #ifdef is
unnecessary.

Let's remove it to avoid confusion.
Signed-off-by: default avatarAndreas Ziegler <andreas.ziegler@fau.de>
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      574673c2
    • Pali Rohár's avatar
      dell-wmi: Ignore WMI event 0xe00e · 65a97a67
      Pali Rohár authored 
      WMI event 0xe00e is received when battery was removed or inserted.
Signed-off-by: default avatarPali Rohár <pali.rohar@gmail.com>
Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
      65a97a67
    • Ville Syrjälä's avatar
      x86/hweight: Don't clobber %rdi · 65ea11ec
      Ville Syrjälä authored 
      The caller expects %rdi to remain intact, push+pop it make that happen.

Fixes the following kind of explosions on my core2duo machine when
trying to reboot or shut down:

  general protection fault: 0000 [#1] PREEMPT SMP
  Modules linked in: i915 i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm netconsole configfs binfmt_misc iTCO_wdt psmouse pcspkr snd_hda_codec_idt e100 coretemp hwmon snd_hda_codec_generic i2c_i801 mii i2c_smbus lpc_ich mfd_core snd_hda_intel uhci_hcd snd_hda_codec snd_hwdep snd_hda_core ehci_pci 8250 ehci_hcd snd_pcm 8250_base usbcore evdev serial_core usb_common parport_pc parport snd_timer snd soundcore
  CPU: 0 PID: 3070 Comm: reboot Not tainted 4.8.0-rc1-perf-dirty #69
  Hardware name:                  /D946GZIS, BIOS TS94610J.86A.0087.2007.1107.1049 11/07/2007
  task: ffff88012a0b4080 task.stack: ffff880123850000
  RIP: 0010:[<ffffffff81003c92>]  [<ffffffff81003c92>] x86_perf_event_update+0x52/0xc0
  RSP: 0018:ffff880123853b60  EFLAGS: 00010087
  RAX: 0000000000000001 RBX: ffff88012fc0a3c0 RCX: 000000000000001e
  RDX: 0000000000000000 RSI: 0000000040000000 RDI: ffff88012b014800
  RBP: ffff880123853b88 R08: ffffffffffffffff R09: 0000000000000000
  R10: ffffea0004a012c0 R11: ffffea0004acedc0 R12: ffffffff80000001
  R13: ffff88012b0149c0 R14: ffff88012b014800 R15: 0000000000000018
  FS:  00007f8b155cd700(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007f8b155f5000 CR3: 000000012a2d7000 CR4: 00000000000006f0
  Stack:
   ffff88012fc0a3c0 ffff88012b014800 0000000000000004 0000000000000001
   ffff88012fc1b750 ffff880123853bb0 ffffffff81003d59 ffff88012b014800
   ffff88012fc0a3c0 ffff88012b014800 ffff880123853bd8 ffffffff81003e13
  Call Trace:
   [<ffffffff81003d59>] x86_pmu_stop+0x59/0xd0
   [<ffffffff81003e13>] x86_pmu_del+0x43/0x140
   [<ffffffff8111705d>] event_sched_out.isra.105+0xbd/0x260
   [<ffffffff8111738d>] __perf_remove_from_context+0x2d/0xb0
   [<ffffffff8111745d>] __perf_event_exit_context+0x4d/0x70
   [<ffffffff810c8826>] generic_exec_single+0xb6/0x140
   [<ffffffff81117410>] ? __perf_remove_from_context+0xb0/0xb0
   [<ffffffff81117410>] ? __perf_remove_from_context+0xb0/0xb0
   [<ffffffff810c898f>] smp_call_function_single+0xdf/0x140
   [<ffffffff81113d27>] perf_event_exit_cpu_context+0x87/0xc0
   [<ffffffff81113d73>] perf_reboot+0x13/0x40
   [<ffffffff8107578a>] notifier_call_chain+0x4a/0x70
   [<ffffffff81075ad7>] __blocking_notifier_call_chain+0x47/0x60
   [<ffffffff81075b06>] blocking_notifier_call_chain+0x16/0x20
   [<ffffffff81076a1d>] kernel_restart_prepare+0x1d/0x40
   [<ffffffff81076ae2>] kernel_restart+0x12/0x60
   [<ffffffff81076d56>] SYSC_reboot+0xf6/0x1b0
   [<ffffffff811a823c>] ? mntput_no_expire+0x2c/0x1b0
   [<ffffffff811a83e4>] ? mntput+0x24/0x40
   [<ffffffff811894fc>] ? __fput+0x16c/0x1e0
   [<ffffffff811895ae>] ? ____fput+0xe/0x10
   [<ffffffff81072fc3>] ? task_work_run+0x83/0xa0
   [<ffffffff81001623>] ? exit_to_usermode_loop+0x53/0xc0
   [<ffffffff8100105a>] ? trace_hardirqs_on_thunk+0x1a/0x1c
   [<ffffffff81076e6e>] SyS_reboot+0xe/0x10
   [<ffffffff814c4ba5>] entry_SYSCALL_64_fastpath+0x18/0xa3
  Code: 7c 4c 8d af c0 01 00 00 49 89 fe eb 10 48 09 c2 4c 89 e0 49 0f b1 55 00 4c 39 e0 74 35 4d 8b a6 c0 01 00 00 41 8b 8e 60 01 00 00 <0f> 33 8b 35 6e 02 8c 00 48 c1 e2 20 85 f6 7e d2 48 89 d3 89 cf
  RIP  [<ffffffff81003c92>] x86_perf_event_update+0x52/0xc0
   RSP <ffff880123853b60>
  ---[ end trace 7ec95181faf211be ]---
  note: reboot[3070] exited with preempt_count 2

Cc: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Fixes: f5967101 ("x86/hweight: Get rid of the special calling convention")
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      65ea11ec
    • Dave Airlie's avatar
      Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next · 4872850a
      Dave Airlie authored 
      A few fixes for amdgpu and ttm for 4.8
- fix a ttm regression caused by the new pipelining code
- fixes for mullins on amdgpu
- updated golden settings for amdgpu

* 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux:
  drm/ttm: Wait for a BO to become idle before unbinding it from GTT
  drm/amdgpu: update golden setting of polaris10
  drm/amdgpu: update golden setting of stoney
  drm/amdgpu: update golden setting of polaris11
  drm/amdgpu: update golden setting of carrizo
  drm/amdgpu: update golden setting of iceland
  drm/amd/amdgpu: change pptable output format from ASCII to binary
  drm/amdgpu/ci: add mullins to default case for smc ucode
  drm/amdgpu/gmc7: add missing mullins case
      4872850a
    • Dave Airlie's avatar
      Merge tag 'drm-intel-next-fixes-2016-08-05' of... · e8285cec
      Dave Airlie authored 
      Merge tag 'drm-intel-next-fixes-2016-08-05' of git://anongit.freedesktop.org/drm-intel into drm-next

3 intel fixes.

* tag 'drm-intel-next-fixes-2016-08-05' of git://anongit.freedesktop.org/drm-intel:
  drm/i915/fbdev: Check for the framebuffer before use
  drm/i915: Never fully mask the the EI up rps interrupt on SNB/IVB
  drm/i915: Wait up to 3ms for the pcu to ack the cdclk change request on SKL
      e8285cec
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