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Commit 486a68f5 authored by Dan Carpenter's avatar Dan Carpenter Committed by Alex Deucher
Browse files

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



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

Fixes: 451bc8eb ("drm/amdgpu: fix PRT teardown on VM fini v3")
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 99147e64

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

+1 −1
Original line number Diff line number Diff line
@@ -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,