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2019 Aug 02
0
[PATCH v7 18/18] drm/virtio: add fence sanity check
...f-initialized fences outside the driver. Signed-off-by: Gerd Hoffmann <kraxel at redhat.com> --- drivers/gpu/drm/virtio/virtgpu_fence.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c index a0514f5bd006..a4b9881ca1d3 100644 --- a/drivers/gpu/drm/virtio/virtgpu_fence.c +++ b/drivers/gpu/drm/virtio/virtgpu_fence.c @@ -41,6 +41,10 @@ bool virtio_fence_signaled(struct dma_fence *f) { struct virtio_gpu_fence *fence = to_virtio_fence(f); + if (WARN_ON_ONCE(fence->f.seqno == 0)) + /* leaked fence outside driv...