drm/amd/amdgpu: fix over-bound accessing in amdgpu_cs_wait_any_fence

Fixes an oops in amdgpu_cs_wait_any_fence.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 146e05f21d35a4ef2cbf0d038f8f1954fa11ed7a..bdef497a6a26253e3edbb216e76351b6c5fd7234 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1498,7 +1498,7 @@ out:
        wait->out.status = (r > 0);
        wait->out.first_signaled = first;
 
-       if (array[first])
+       if (first < fence_count && array[first])
                r = array[first]->error;
        else
                r = 0;