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drm/amdgpu: Fix dangling kfd_bo pointer for shared BOs

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If a kfd_bo was shared (e.g. a dmabuf export), the original kfd_bo may be
freed when the amdgpu_bo still lives on. Free the kfd_bo struct in the
release_notify callback then the amdgpu_bo is freed.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-By: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling
2021-11-04 15:11:04 -04:00
committed by Alex Deucher
parent b8c20c74ab
commit 5702d05295
3 changed files with 12 additions and 6 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@@ -1274,7 +1274,7 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
abo = ttm_to_amdgpu_bo(bo);
if (abo->kfd_bo)
amdgpu_amdkfd_unreserve_memory_limit(abo);
amdgpu_amdkfd_release_notify(abo);
/* We only remove the fence if the resv has individualized. */
WARN_ON_ONCE(bo->type == ttm_bo_type_kernel