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drm/amdgpu: fix dropped backing store handling in amdgpu_dma_buf_move_notify

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bo->tbo.resource can now be NULL.

Signed-off-by: Christian König <christian.koenig@amd.com>
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1811
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211210083927.1754-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2021-12-10 09:39:27 +01:00 committed by Christian König
parent fea3fdf975
commit fc74881c28
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
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@ -384,7 +384,7 @@ amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach)
struct amdgpu_vm_bo_base *bo_base;
int r;
if (bo->tbo.resource->mem_type == TTM_PL_SYSTEM)
if (!bo->tbo.resource || bo->tbo.resource->mem_type == TTM_PL_SYSTEM)
return;
r = ttm_bo_validate(&bo->tbo, &placement, &ctx);