Thomas Fleury f71ac07972 gpu: nvgpu: fix out-of-bound idx for FECS trace ...

Fix a case where user space could potentially see
an out of bounds write index for user facing
context switch buffer. Check if write_idx is
valid, and disable FECS tracing if corrupted.

Bug 1757714

Change-Id: I5710c40121fa6935dba3918adf5290488e31e9f6
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1139305
(cherry picked from commit 47b65e5b59037932777be4911fe040e6acbc5651)
Reviewed-on: http://git-master/r/1150048
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

2016-05-21 11:33:46 -07:00

..

nvgpu

gpu: nvgpu: fix out-of-bound idx for FECS trace

2016-05-21 11:33:46 -07:00