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| author | Deepak Nibade <dnibade@nvidia.com> | 2016-10-10 07:03:32 -0400 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2016-10-10 13:13:56 -0400 |
| commit | bb5fd16c67287e53db5165a974ea15ec3be09fe9 (patch) | |
| tree | 062f363cbfaa58c64ee377c6d608037cda15acf6 /drivers/gpu/nvgpu/gk20a/mm_gk20a.c | |
| parent | 3bbd6419767896719833bc5024200ea67b8fb914 (diff) | |
gpu: nvgpu: fix use-after-free in case of error notifier
A use-after-free scenario is possible where one thread in
gk20a_free_error_notifiers() is trying to free the error
notifier and another thread in gk20a_set_error_notifier()
is still using the error notifier
Fix this by introducing mutex error_notifier_mutex for
error notifier accesses
Take mutex in gk20a_free_error_notifiers() and in
gk20a_set_error_notifier() before accessing notifier
In gk20a_init_error_notifier(), set the pointer
ch->error_notifier_ref inside the mutex and only
after notifier is completely initialized
Bug 1824788
Change-Id: I47e1ab57d54f391799f5a0999840b663fd34585f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1233988
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gk20a/mm_gk20a.c')
0 files changed, 0 insertions, 0 deletions