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- Kernel errors shown in timeline
- Tool log: The tool output log is now available in the html timeline
- Selective ftrace filter: can choose phase and test run (for x2)
- further instrumentation of dev mode to cover wifi
Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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- when running with sudo, change output dir back to SUDO_USER ownership
- replace all os.system/popen instances with subprocess.call/Popen
- graph pm device callbacks and async threads in separate sections
- remove kprobe config section and replaced it with timeline_functions
- added new kprobe config section for dev mode: dev_timeline_functions
- merge call loops in dev mode to create a single event with a count
- added hover text to all header entries to explain what they mean
- changed the -filter option to grep device driver/name for a string
- added new options for tuning the dev mode timeline/custom kprobes
Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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- config file support added
- dev mode for monitoring kernel source calls and async kernel threads
- custom command support for executing a user cmd instead of suspend
- proc mode support for monitoring user processes with cpu exec data
- kprobe support for custom function tracing
- advanced callgraph support for function debug
- many bug fixes and formatting upgrades
Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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A quick cleanup with scripts/checkpatch.pl -f <file>.
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Since commit 5d47ec02c37ea6 ("firmware: Correct handling of
fw_state_wait() return value") fw_load_abort() could be called twice and
lead us to a kernel crash. This happens only when the firmware fallback
mechanism (regular or custom) is used. The fallback mechanism exposes a
sysfs interface for userspace to upload a file and notify the kernel
when the file is loaded and ready, or to cancel an upload by echo'ing -1
into on the loading file:
echo -n "-1" > /sys/$DEVPATH/loading
This will call fw_load_abort(). Some distributions actually have a udev
rule in place to *always* immediately cancel all firmware fallback
mechanism requests (Debian), they have:
$ cat /lib/udev/rules.d/50-firmware.rules
# stub for immediately telling the kernel that userspace firmware loading
# failed; necessary to avoid long timeouts with CONFIG_FW_LOADER_USER_HELPER=y
SUBSYSTEM=="firmware", ACTION=="add", ATTR{loading}="-1
Distributions with this udev rule would run into this crash only if the
fallback mechanism is used. Since most distributions disable by default
using the fallback mechanism (CONFIG_FW_LOADER_USER_HELPER_FALLBACK),
this would typicaly mean only 2 drivers which *require* the fallback
mechanism could typically incur a crash: drivers/firmware/dell_rbu.c and
the drivers/leds/leds-lp55xx-common.c driver. Distributions enabling
CONFIG_FW_LOADER_USER_HELPER_FALLBACK by default are obviously more
exposed to this crash.
The crash happens because after commit 5b029624948d ("firmware: do not
use fw_lock for fw_state protection") and subsequent fix commit
5d47ec02c37ea6 ("firmware: Correct handling of fw_state_wait() return
value") a race can happen between this cancelation and the firmware
fw_state_wait_timeout() being woken up after a state change with which
fw_load_abort() as that calls swake_up(). Upon error
fw_state_wait_timeout() will also again call fw_load_abort() and trigger
a null reference.
At first glance we could just fix this with a !buf check on
fw_load_abort() before accessing buf->fw_st, however there is a logical
issue in having a state machine used for the fallback mechanism and
preventing access from it once we abort as its inside the buf
(buf->fw_st).
The firmware_class.c code is setting the buf to NULL to annotate an
abort has occurred. Replace this mechanism by simply using the state
check instead. All the other code in place already uses similar checks
for aborting as well so no further changes are needed.
An oops can be reproduced with the new fw_fallback.sh fallback mechanism
cancellation test. Either cancelling the fallback mechanism or the
custom fallback mechanism triggers a crash.
mcgrof@piggy ~/linux-next/tools/testing/selftests/firmware
(git::20170111-fw-fixes)$ sudo ./fw_fallback.sh
./fw_fallback.sh: timeout works
./fw_fallback.sh: firmware comparison works
./fw_fallback.sh: fallback mechanism works
[ this then sits here when it is trying the cancellation test ]
Kernel log:
test_firmware: loading 'nope-test-firmware.bin'
misc test_firmware: Direct firmware load for nope-test-firmware.bin failed with error -2
misc test_firmware: Falling back to user helper
BUG: unable to handle kernel NULL pointer dereference at 0000000000000038
IP: _request_firmware+0xa27/0xad0
PGD 0
Oops: 0000 [#1] SMP
Modules linked in: test_firmware(E) ... etc ...
CPU: 1 PID: 1396 Comm: fw_fallback.sh Tainted: G W E 4.10.0-rc3-next-20170111+ #30
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.1-0-g8891697-prebuilt.qemu-project.org 04/01/2014
task: ffff9740b27f4340 task.stack: ffffbb15c0bc8000
RIP: 0010:_request_firmware+0xa27/0xad0
RSP: 0018:ffffbb15c0bcbd10 EFLAGS: 00010246
RAX: 00000000fffffffe RBX: ffff9740afe5aa80 RCX: 0000000000000000
RDX: ffff9740b27f4340 RSI: 0000000000000283 RDI: 0000000000000000
RBP: ffffbb15c0bcbd90 R08: ffffbb15c0bcbcd8 R09: 0000000000000000
R10: 0000000894a0d4b1 R11: 000000000000008c R12: ffffffffc0312480
R13: 0000000000000005 R14: ffff9740b1c32400 R15: 00000000000003e8
FS: 00007f8604422700(0000) GS:ffff9740bfc80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000038 CR3: 000000012164c000 CR4: 00000000000006e0
Call Trace:
request_firmware+0x37/0x50
trigger_request_store+0x79/0xd0 [test_firmware]
dev_attr_store+0x18/0x30
sysfs_kf_write+0x37/0x40
kernfs_fop_write+0x110/0x1a0
__vfs_write+0x37/0x160
? _cond_resched+0x1a/0x50
vfs_write+0xb5/0x1a0
SyS_write+0x55/0xc0
? trace_do_page_fault+0x37/0xd0
entry_SYSCALL_64_fastpath+0x1e/0xad
RIP: 0033:0x7f8603f49620
RSP: 002b:00007fff6287b788 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055c307b110a0 RCX: 00007f8603f49620
RDX: 0000000000000016 RSI: 000055c3084d8a90 RDI: 0000000000000001
RBP: 0000000000000016 R08: 000000000000c0ff R09: 000055c3084d6336
R10: 000055c307b108b0 R11: 0000000000000246 R12: 000055c307b13c80
R13: 000055c3084d6320 R14: 0000000000000000 R15: 00007fff6287b950
Code: 9f 64 84 e8 9c 61 fe ff b8 f4 ff ff ff e9 6b f9 ff
ff 48 c7 c7 40 6b 8d 84 89 45 a8 e8 43 84 18 00 49 8b be 00 03 00 00 8b
45 a8 <83> 7f 38 02 74 08 e8 6e ec ff ff 8b 45 a8 49 c7 86 00 03 00 00
RIP: _request_firmware+0xa27/0xad0 RSP: ffffbb15c0bcbd10
CR2: 0000000000000038
---[ end trace 6d94ac339c133e6f ]---
Fixes: 5d47ec02c37e ("firmware: Correct handling of fw_state_wait() return value")
Reported-and-Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reported-and-Tested-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
CC: <stable@vger.kernel.org> [3.10+]
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Currently the pitch is passed in as depth. This causes
drm_mode_legacy_fb_format() to return the wrong pixel format.
The wrong pixel format will be rejected by vmw_kms_new_framebuffer(),
thus leaving par->set_fb to NULL.
This eventually causes a crash in vmw_fb_setcolreg() when the code
tries to dereference par->set_fb.
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
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git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"This is the main request for rc6, since really the one earlier was the
rc5 one :-)
The main thing are the nouveau specific race fixes for the connector
locking bug we fixed in -next and reverted here as it has quite large
prereqs. These two fixes should solve the problem at that level and we
can fix it properly in 4.11
Otherwise i915 has a bunch of changes, one ABI change for GVT related
stuff, some VC4 leak fixes, one core fence fix and some AMD changes,
oh and one ast hang avoidance fix.
Hoping it calms down around now"
* tag 'drm-fixes-for-v4.10-rc6-part-two' of git://people.freedesktop.org/~airlied/linux: (25 commits)
drm/nouveau: Handle fbcon suspend/resume in seperate worker
drm/nouveau: Don't enabling polling twice on runtime resume
drm/ast: Fixed system hanged if disable P2A
Revert "drm/radeon: always apply pci shutdown callbacks"
drm/i915: reinstate call to trace_i915_vma_bind
drm/i915: Move atomic state free from out of fence release
drm/i915: Check for NULL atomic state in intel_crtc_disable_noatomic()
drm/i915: Fix calculation of rotated x and y offsets for planar formats
drm/i915: Don't init hpd polling for vlv and chv from runtime_suspend()
drm/i915: Don't leak edid in intel_crt_detect_ddc()
drm/i915: Release temporary load-detect state upon switching
drm/i915: prevent crash with .disable_display parameter
drm/i915: Avoid drm_atomic_state_put(NULL) in intel_display_resume
MAINTAINERS: update new mail list for intel gvt driver
drm/i915/gvt: Fix kmem_cache_create() name
drm/i915/gvt/kvmgt: mdev ABI is available_instances, not available_instance
drm/amdgpu: fix unload driver issue for virtual display
drm/amdgpu: check ring being ready before using
drm/vc4: Return -EINVAL on the overflow checks failing.
drm/vc4: Fix an integer overflow in temporary allocation layout.
...
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git://anongit.freedesktop.org/git/drm-intel into drm-fixes
More fixes than I'd like at this stage, but I think the holidays and
conferences have delayed finding and fixing the stuff a bit. Almost all
of them have Fixes: tags, so it's not just random fixes, we can point
fingers at the commits that broke stuff.
There's an ABI fix to GVT from Alex, before we go on an release a kernel
with the wrong attribute name.
* tag 'drm-intel-fixes-2017-01-26' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915: reinstate call to trace_i915_vma_bind
drm/i915: Move atomic state free from out of fence release
drm/i915: Check for NULL atomic state in intel_crtc_disable_noatomic()
drm/i915: Fix calculation of rotated x and y offsets for planar formats
drm/i915: Don't init hpd polling for vlv and chv from runtime_suspend()
drm/i915: Don't leak edid in intel_crt_detect_ddc()
drm/i915: Release temporary load-detect state upon switching
drm/i915: prevent crash with .disable_display parameter
drm/i915: Avoid drm_atomic_state_put(NULL) in intel_display_resume
MAINTAINERS: update new mail list for intel gvt driver
drm/i915/gvt: Fix kmem_cache_create() name
drm/i915/gvt/kvmgt: mdev ABI is available_instances, not available_instance
drm/i915/gvt: Fix relocation of shadow bb
drm/i915/gvt: Enable the shadow batch buffer
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix two regressions introduced recently, one by reverting the
problematic commit and one by fixing up locking in the ACPICA core.
Specifics:
- Revert a recent change that added an ACPI video blacklist entry for
HP Pavilion dv6 as it turned to introduce backlight handling
regressions on some systems (Hans de Goede).
- Fix locking in the ACPICA core to avoid deadlocks related to table
loading that were exposed by a recent change in that area (Lv
Zheng)"
* tag 'acpi-4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPI / video: Add force_native quirk for HP Pavilion dv6"
ACPICA: Tables: Fix hidden logic related to acpi_tb_install_standard_table()
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix two regressions introduced recently, one by reverting the
problematic commit and one by fixing up the behavior in an overlooked
case.
Specifics:
- Revert the recent change that caused suspend-to-idle to be used as
the default suspend method on systems where it is indicated to be
efficient by the ACPI tables, as that turned out to be premature
and introduced suspend regressions on some systems with missing
power management support in device drivers (Rafael Wysocki).
- Fix up the intel_pstate driver to take changes of the global limits
via sysfs correctly when the performance policy is used which has
been broken by a recent change in it (Srinivas Pandruvada)"
* tag 'pm-4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Fix sysfs limits enforcement for performance policy
Revert "PM / sleep / ACPI: Use the ACPI_FADT_LOW_POWER_S0 flag"
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Resuming from RPM can happen while already holding
dev->mode_config.mutex. This means we can't actually handle fbcon in
any RPM resume workers, since restoring fbcon requires grabbing
dev->mode_config.mutex again. So move the fbcon suspend/resume code into
it's own worker, and rely on that instead to avoid deadlocking.
This fixes more deadlocks for runtime suspending the GPU on the ThinkPad
W541. Reproduction recipe:
- Get a machine with both optimus and a nvidia card with connectors
attached to it
- Wait for the nvidia GPU to suspend
- Attempt to manually reprobe any of the connectors on the nvidia GPU
using sysfs
- *deadlock*
[airlied: use READ_ONCE to address Hans's comment]
Signed-off-by: Lyude <lyude@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Kilian Singer <kilian.singer@quantumtechnology.info>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: David Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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As it turns out, on cards that actually have CRTCs on them we're already
calling drm_kms_helper_poll_enable(drm_dev) from
nouveau_display_resume() before we call it in
nouveau_pmops_runtime_resume(). This leads us to accidentally trying to
enable polling twice, which results in a potential deadlock between the
RPM locks and drm_dev->mode_config.mutex if we end up trying to enable
polling the second time while output_poll_execute is running and holding
the mode_config lock. As such, make sure we only enable polling in
nouveau_pmops_runtime_resume() if we need to.
This fixes hangs observed on the ThinkPad W541
Signed-off-by: Lyude <lyude@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Kilian Singer <kilian.singer@quantumtechnology.info>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: David Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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The original ast driver will access some BMC configuration through P2A bridge
that can be disabled since AST2300 and after.
It will cause system hanged if P2A bridge is disabled.
Here is the update to fix it.
Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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drm-fixes
This pull request brings in a few little error checking fixes and one
slow memory leak fix.
* tag 'drm-vc4-fixes-2017-01-23' of https://github.com/anholt/linux:
drm/vc4: Return -EINVAL on the overflow checks failing.
drm/vc4: Fix an integer overflow in temporary allocation layout.
drm/vc4: fix a bounds check
drm/vc4: Fix memory leak of the CRTC state.
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Currently the mix of genpd_poweron(), genpd_power_on(),
genpd_sync_poweron() and the ->power_on() callback, makes
a bit difficult to follow the path of execution. The similar
applies to the functions dealing with power off.
In a way to improve this understanding, let's do the following renaming:
genpd_power_on() -> _genpd_power_on()
genpd_poweron() -> genpd_power_on()
genpd_sync_poweron() -> genpd_sync_power_on()
genpd_power_off() -> _genpd_power_off()
genpd_poweroff() -> genpd_power_off()
genpd_sync_poweroff() -> genpd_sync_power_off()
genpd_poweroff_unused() -> genpd_power_off_unused()
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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into drm-fixes
Just a few small fixes.
* 'drm-fixes-4.10' of git://people.freedesktop.org/~agd5f/linux:
Revert "drm/radeon: always apply pci shutdown callbacks"
drm/amdgpu: fix unload driver issue for virtual display
drm/amdgpu: check ring being ready before using
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git://anongit.freedesktop.org/git/drm-misc into drm-fixes
Single fence fix.
* tag 'drm-misc-fixes-2017-01-23' of git://anongit.freedesktop.org/git/drm-misc:
drm/fence: fix memory overwrite when setting out_fence fd
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Subvolume directory inodes can't have ACLs.
Cc: <stable@vger.kernel.org> # 4.9.x
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
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When you snapshot a subvolume containing a subvolume, you get a
placeholder directory where the subvolume would be. These directory
inodes have ->i_ops set to btrfs_dir_ro_inode_operations. Previously,
these i_ops didn't include the xattr operation callbacks. The conversion
to xattr_handlers missed this case, leading to bogus attempts to set
xattrs on these inodes. This manifested itself as failures when running
delayed inodes.
To fix this, clear IOP_XATTR in ->i_opflags on these inodes.
Fixes: 6c6ef9f26e59 ("xattr: Stop calling {get,set,remove}xattr inode operations")
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Reported-by: Chris Murphy <lists@colorremedies.com>
Tested-by: Chris Murphy <lists@colorremedies.com>
Cc: <stable@vger.kernel.org> # 4.9.x
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
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As Jeff explained in c2951f32d36c ("btrfs: remove old tree_root dirent
processing in btrfs_real_readdir()"), supporting this old format is no
longer necessary since the Btrfs magic number has been updated since we
changed to the current format. There are other places where we still
handle this old format, but since this is part of a fix that is going to
stable, I'm only removing this one for now.
Cc: <stable@vger.kernel.org> # 4.9.x
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
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"swiotlb buffer is full" errors occur after repeated initialisation of a
device - f.e. suspend/resume or ip link set up/down. This is because memory
mapped using dma_map_single() in ravb_ring_format() and ravb_start_xmit()
is not released. Resolve this problem by unmapping descriptors when
freeing rings.
Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
[simon: reworked]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* acpica:
ACPICA: Tables: Fix hidden logic related to acpi_tb_install_standard_table()
* acpi-video:
Revert "ACPI / video: Add force_native quirk for HP Pavilion dv6"
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* pm-sleep:
Revert "PM / sleep / ACPI: Use the ACPI_FADT_LOW_POWER_S0 flag"
* pm-cpufreq:
cpufreq: intel_pstate: Fix sysfs limits enforcement for performance policy
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By using kernel_halt() instead of machine_halt(), we can make the driver
build as a module.
However, jz4740 platforms not loading this module will not be able to power
off.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Revert "rtc: jz4740: make the driver builtin only"
This reverts commit b9168c539c0b2de756aaffd380384dbde8adbe07.
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We don't trigger this from the normal IO path, since we always use
blocking allocations from there. But Bart saw it testing multipath
dm, since that is a heavy user of atomic request allocations in
the map and clone path.
Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node. This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.
The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards. There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()")
Cc: stable@vger.kernel.org # v4.6+
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With NOGET quirk Logitech F510 is now fully workable in dinput mode including
rumble effects (according to fftest).
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=117091
[jkosina@suse.cz: fix patch format]
Signed-off-by: Ardinartsev Nikita <ardinar23@gmail.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Quirking the following AMI USB device with ALWAYS_POLL fixes an AMI
virtual keyboard and mouse from not responding and timing out when
it is attached to a ppc64el Power 8 system and when we have some
rapid open/closes on the mouse device.
usb 1-3: new high-speed USB device number 2 using xhci_hcd
usb 1-3: New USB device found, idVendor=046b, idProduct=ff01
usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-3: Product: Virtual Hub
usb 1-3: Manufacturer: American Megatrends Inc.
usb 1-3: SerialNumber: serial
usb 1-3.3: new high-speed USB device number 3 using xhci_hcd
usb 1-3.3: New USB device found, idVendor=046b, idProduct=ff31
usb 1-3.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-3.3: Product: Virtual HardDisk Device
usb 1-3.3: Manufacturer: American Megatrends Inc.
usb 1-3.4: new low-speed USB device number 4 using xhci_hcd
usb 1-3.4: New USB device found, idVendor=046b, idProduct=ff10
usb 1-3.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-3.4: Product: Virtual Keyboard and Mouse
usb 1-3.4: Manufacturer: American Megatrends Inc.
With the quirk I have not been able to trigger the issue with
half an hour of saturation soak testing.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Commit 025bcc1 performed cleanup work on the 'wacom_pl_irq' function, making
it follow the standards used in the rest of the codebase. The change
unintiontionally allowed the function to send input events from reports
that are not marked as being in prox. This can cause problems as the
report values for X, Y, etc. are not guaranteed to be correct. In
particular, occasionally the tablet will send a report with these values
set to zero. If such a report is received it can caus an unexpected jump
in the XY position.
This patch surrounds more of the processing code with a proximity check,
preventing these zeroed reports from overwriting the current state. To
be safe, only the tool type and ABS_MISC events should be reported when
the pen is marked as being out of prox.
Fixes: 025bcc1540 ("HID: wacom: Simplify 'wacom_pl_irq'")
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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IF NFS_LAYOUT_RETURN_REQUESTED is not set, then we currently exit
without freeing the list of invalidated layout segments, leading
to a reference leak.
Reported-by: Olga Kornievskaia <aglo@umich.edu>
Fixes: 24408f5282 ("pNFS: Fix bugs in _pnfs_return_layout")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Add support for the LEDs around the mode switch to the generic code path in
support of the second generation Intuos Pro.
Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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The second generation Intuos Pro is the first device in the generic codepath
which has a touchswitch. We utilize a flag in wacom_shared in order to report
this switch event received from the pad on the touch input.
Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Add vendor defined touch to support the second generation Intuos Pro.
Previously all generic Wacom devices used true HID to report their touch.
Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Add support for the touchring to the generic code path in support of the second
generation Intuos Pro.
We also add checks for usage->type to ensure that we handle the usage before we
report it, or change the inrange_state based on it.
Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Input_event_flag duplicates the information we track in
wacom_wac->hid_data.inrange_state for the pad.
Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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In addition to its USB interface, the second-generation Intuos Pro
includes a Bluetooth radio that offers two pairing interfaces: classic
and low-energy. The classic interface functions just like the earlier
Bluetooth-enabled Intuos4 and Graphire4 tablets, appearing as a HID device
that our driver can work with. The low-energy interface is intented to
be used by userspace applications that make use of its paper-to-digital
capabilities.
Despite the USB interface using Wacom's new vendor-defined HID usages,
the Bluetooth interface provides us with useless black-box "blob"
report descriptors like past devices. We thus have to explicitly add
support for the PIDs and reports used.
These devices pack a /lot/ of information into a single Bluetooth
input report. Each report contains up to seven snapshots of the pen
state, four snapshots of the touch state (of five touches each), pad
state, and battery data. Thankfully this isn't too hard for the driver
to report -- it just takes a fair amount of code to extract!
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Centralize our definition of report IDs by moving those for device commands
into wacom_wac.h alongside those for input reports.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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There no reason a Bluetooth device with the appropriate HID descriptor couldn't
be used through the HID_GENERIC codepath in the future. Ensure that the driver
attempts to bind to these devices.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Lock sequence IDs are bumped in decode_lock by calling
nfs_increment_seqid(). nfs_increment_sequid() does not use the
seqid_mutating_err() function fixed in commit 059aa7348241 ("Don't
increment lock sequence ID after NFS4ERR_MOVED").
Fixes: 059aa7348241 ("Don't increment lock sequence ID after ...")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Xuan Qi <xuan.qi@oracle.com>
Cc: stable@vger.kernel.org # v3.7+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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gcc gets confused about the control flow in ktd2692_parse_dt(), causing
it to warn about what seems like a potential bug:
drivers/leds/leds-ktd2692.c: In function 'ktd2692_probe':
drivers/leds/leds-ktd2692.c:244:15: error: '*((void *)&led_cfg+8)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/leds/leds-ktd2692.c:225:7: error: 'led_cfg.flash_max_microamp' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/leds/leds-ktd2692.c:232:3: error: 'led_cfg.movie_max_microamp' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The code is fine, and slightly reworking it in an equivalent way lets
gcc figure that out too, which gets rid of the warning.
Fixes: 77e7915b15bb ("leds: ktd2692: Add missing of_node_put")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
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When doing a kernel build with 'make -s', everything is silenced except
the objtool build. That's because the tools tree support for silent
builds is some combination of missing and broken.
Three changes are needed to fix it:
- Makefile: propagate '-s' to the sub-make's MAKEFLAGS variable so the
tools Makefiles can see it.
- tools/scripts/Makefile.include: fix the tools Makefiles' ability to
recognize '-s'. The MAKE_VERSION and MAKEFLAGS checks are copied from
the top-level Makefile. This silences the "DESCEND objtool" message.
- tools/build/Makefile.build: add support to the tools Build files for
recognizing '-s'. Again the MAKE_VERSION and MAKEFLAGS checks are
copied from the top-level Makefile. This silences all the object
compile/link messages.
Reported-and-Tested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michal Marek <mmarek@suse.com>
Link: http://lkml.kernel.org/r/e8967562ef640c3ae9a76da4ae0f4e47df737c34.1484799200.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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If we come in from blk_mq_alloc_requst() with NOWAIT set in flags,
we must ensure that we don't later overwrite that in
blk_mq_sched_get_request(). Initialize alloc_data->flags before
passing it in.
Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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As a result of commit a3497642c261 ("perf ftrace: Make 'function_graph'
be the default tracer") the ftrace.tracer variable can't be NULL but the
other code setting default tracer remained.
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1485423339-22780-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The goal of erratum #27704 workaround was to make sure that ASIDs and VMIDs
are unique across all SMMU instances on affected Cavium systems.
Currently, the workaround code partitions ASIDs and VMIDs by increasing
global cavium_smmu_context_count which in turn becomes the base ASID and VMID
value for the given SMMU instance upon the context bank initialization.
For systems with multiple SMMU instances this approach implies the risk
of crossing 8-bit ASID, like for 1-socket CN88xx capable of 4 SMMUv2,
128 context banks each:
SMMU_0 (0-127 ASID RANGE)
SMMU_1 (127-255 ASID RANGE)
SMMU_2 (256-383 ASID RANGE) <--- crossing 8-bit ASID
SMMU_3 (384-511 ASID RANGE) <--- crossing 8-bit ASID
Since now we use 8-bit ASID (SMMU_CBn_TCR2.AS = 0) we effectively misconfigure
ASID[15:8] bits of SMMU_CBn_TTBRm register for SMMU_2/3. Moreover, we still
assume non-zero ASID[15:8] bits upon context invalidation. In the end,
except SMMU_0/1 devices all other devices under other SMMUs will fail on guest
power off/on. Since we try to invalidate TLB with 16-bit ASID but we actually
have 8-bit zero padded 16-bit entry.
This patch adds 16-bit ASID support for stage-1 AArch64 contexts so that
we use ASIDs consistently for all SMMU instances.
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Tirumalesh Chalamarla <Tirumalesh.Chalamarla@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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It is the time we have the real 16-bit Stream ID user, which is the
ThunderX. Its IO topology uses 1:1 map for Requester ID to Stream ID
translation for each root complex which allows to get full 16-bit
Stream ID. Firmware assigns bus IDs that are greater than 128 (0x80)
to some buses under PEM (external PCIe interface). Eventually SMMU
drops devices on that buses because their Stream ID is out of range:
pci 0006:90:00.0: stream ID 0x9000 out of range for SMMU (0x7fff)
To fix above issue enable the Extended Stream ID optional feature
when available.
Reviewed-by: Tomasz Nowicki <tomasz.nowicki@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro.org>
Tested-by: Tomasz Nowicki <tomasz.nowicki@caviumnetworks.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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With the introduction of the new iommu_{register/get}_instance()
interface in commit e4f10ffe4c9b ("iommu: Make of_iommu_set/get_ops() DT
agnostic") (based on struct fwnode_handle as look-up token, so firmware
agnostic) to register IOMMU instances with the core IOMMU layer there is
no reason to keep the old OF based interface around any longer.
Convert all the IOMMU drivers (and OF IOMMU core code) that rely on the
of_iommu_{set/get}_ops() to the new kernel interface to register/retrieve
IOMMU instances and remove the of_iommu_{set/get}_ops() remaining glue
code in order to complete the interface rework.
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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In the current arm-smmu-v3 driver, all smmus that support 2-level
stream tables are being forced to use them. This is suboptimal for
smmus that support fewer stream id bits than would fill in a single
second level table. This patch limits the use of 2-level tables to
smmus that both support the feature and whose first level table can
possibly contain more than a single entry.
Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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To prevent corruption of the stage-1 context pointer field when
updating STEs, rebuild the entire containing dword instead of
clearing individual fields.
Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains a large batch with Netfilter fixes for
your net tree, they are:
1) Two patches to solve conntrack garbage collector cpu hogging, one to
remove GC_MAX_EVICTS and another to look at the ratio (scanned entries
vs. evicted entries) to make a decision on whether to reduce or not
the scanning interval. From Florian Westphal.
2) Two patches to fix incorrect set element counting if NLM_F_EXCL is
is not set. Moreover, don't decrenent set->nelems from abort patch
if -ENFILE which leaks a spare slot in the set. This includes a
patch to deconstify the set walk callback to update set->ndeact.
3) Two fixes for the fwmark_reflect sysctl feature: Propagate mark to
reply packets both from nf_reject and local stack, from Pau Espin Pedrol.
4) Fix incorrect handling of loopback traffic in rpfilter and nf_tables
fib expression, from Liping Zhang.
5) Fix oops on stateful objects netlink dump, when no filter is specified.
Also from Liping Zhang.
6) Fix a build error if proc is not available in ipt_CLUSTERIP, related
to fix that was applied in the previous batch for net. From Arnd Bergmann.
7) Fix lack of string validation in table, chain, set and stateful
object names in nf_tables, from Liping Zhang. Moreover, restrict
maximum log prefix length to 127 bytes, otherwise explicitly bail
out.
8) Two patches to fix spelling and typos in nf_tables uapi header file
and Kconfig, patches from Alexander Alemayhu and William Breathitt Gray.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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In a bmapx call, bmv_count is the total size of the array, including the
zeroth element that userspace uses to supply the search key. The output
array starts at offset 1 so that we can set up the user for the next
invocation. Since we now can split an extent into multiple bmap records
due to shared/unshared status, we have to be careful that we don't
overflow the output array.
In the original patch f86f403794b ("xfs: teach get_bmapx about shared
extents and the CoW fork") I used cur_ext (the output index) to check
for overflows, albeit with an off-by-one error. Since nexleft no longer
describes the number of unfilled slots in the output, we can rip all
that out and use cur_ext for the overflow check directly.
Failure to do this causes heap corruption in bmapx callers such as
xfs_io and xfs_scrub. xfs/328 can reproduce this problem.
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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