diff options
| author | David Carrillo-Cisneros <[email protected]> | 2016-06-01 12:33:05 -0700 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2016-06-08 09:18:45 +0200 |
| commit | a4f144ebbdf6f7807c477bce8e136047ed27321f (patch) | |
| tree | 93fbb633948b9c6e47c52fe7b2eab07d351ee50d /drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | |
| parent | 030ba6cd105c68ce919c5e239853b567490cd059 (diff) | |
perf/core: Fix crash due to account/unaccount_sb_event() inconsistency
unaccount_pmu_sb_event() did not check for attributes in event->attr
before calling detach_sb_event(), while account_pmu_event() did.
This caused NULL pointer reference in cgroup events that did not
have any of the attributes checked by account_pmu_event().
To trigger the bug just wait for a cgroup event to terminate, e.g.:
$ mkdir /dev/cgroup/devices/test
$ perf stat -e cycles -a -G test sleep 0
... see crash ...
Signed-off-by: David Carrillo-Cisneros <[email protected]>
Reviewed-by: Stephane Eranian <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Zheng <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c')
0 files changed, 0 insertions, 0 deletions