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drm/amdgpu: Fix a NULL deref in amdgpu_vm_add_prt_cb()

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We accidentally dereference "cb" if the kmalloc() fails.

Fixes: 451bc8eb8fe6 ("drm/amdgpu: fix PRT teardown on VM fini v3")
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dan Carpenter 2017-04-03 21:41:39 +03:00 committed by Alex Deucher
parent 99147e6442
commit 486a68f544
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1528,7 +1528,7 @@ static void amdgpu_vm_add_prt_cb(struct amdgpu_device *adev,
if (fence)
dma_fence_wait(fence, false);
amdgpu_vm_prt_put(cb->adev);
amdgpu_vm_prt_put(adev);
} else {
cb->adev = adev;
if (!fence || dma_fence_add_callback(fence, &cb->cb,