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| author | Michel Dänzer <michel.daenzer@amd.com> | 2017-11-03 16:00:35 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-11-04 09:48:01 -0400 |
| commit | e1fc12c5d9ad06a2a74e97a91f1b0c5f4c723b50 (patch) | |
| tree | a138da480d215bdc6608d6c275bdc6874d4bbb92 /drivers/gpu/drm/ttm/ttm_page_alloc.c | |
| parent | 37c5f2c99adf63adf13f1ca309a1ffce25c5589a (diff) | |
drm/ttm: Always and only destroy bo->ttm_resv in ttm_bo_release_list
Fixes a use-after-free due to a race condition in
ttm_bo_cleanup_refs_and_unlock, which allows one task to reserve a BO
and destroy its ttm_resv while another task is waiting for it to signal
in reservation_object_wait_timeout_rcu.
v2:
* Always initialize bo->ttm_resv in ttm_bo_init_reserved
(Christian König)
Fixes: 0d2bd2ae045d "drm/ttm: fix memory leak while individualizing BOs"
Reviewed-by: Chunming Zhou <david1.zhou@amd.com> # v1
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_page_alloc.c')
0 files changed, 0 insertions, 0 deletions