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Code Issues Releases Wiki Activity

drm/amdgpu: bo could be null when access in vm bo update

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Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: David Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Junwei Zhang 2018-04-23 17:21:21 +08:00 committed by Alex Deucher
parent 6c8d74caa2
commit 8239f57ac3
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1509,7 +1509,6 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
struct drm_mm_node *nodes;
struct dma_fence *exclusive, **last_update;
uint64_t flags;
uint32_t mem_type;
int r;
if (clear || !bo_va->base.bo) {
@ -1568,9 +1567,9 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
* the evicted list so that it gets validated again on the
* next command submission.
*/
mem_type = bo->tbo.mem.mem_type;
if (bo && bo->tbo.resv == vm->root.base.bo->tbo.resv &&
!(bo->preferred_domains & amdgpu_mem_type_to_domain(mem_type)))
!(bo->preferred_domains &
amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type)))
list_add_tail(&bo_va->base.vm_status, &vm->evicted);
spin_unlock(&vm->status_lock);