diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2014-03-18 11:27:37 -0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-03-19 08:17:29 +0100 |
| commit | 9297ebf29ad9118edd6c0fedc84f03e35028827d (patch) | |
| tree | 4e798192157012279ae9839d3bdb0caae900c2de /net/unix/af_unix.c | |
| parent | e5081a538a565284fec5f30a937d98e460d5e780 (diff) | |
drm/i915: Do not dereference pointers from ring buffer in evict event
The TP_printk() should never dereference any pointers, because the ring
buffer can be read at some unknown time in the future. If a device no
longer exists, it can cause a kernel oops. This also makes this
event useless when saving the ring buffer in userspaces tools such as
perf and trace-cmd.
The i915_gem_evict_vm dereferences the vm pointer which may also not
exist when the ring buffer is read sometime in the future.
Link: http://lkml.kernel.org/r/1395095198-20034-3-git-send-email-artagnon@gmail.com
Reported-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: stable@vger.kernel.org # 3.13+
Fixes: bcccff847d1f "drm/i915: trace vm eviction instead of everything"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
[danvet: Try to make it actually compile]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions