Displaying 1 result from an estimated 1 matches for "6b3565feddb21".
2020 Aug 20
0
[PATCH AUTOSEL 4.4 08/10] virtio_ring: Avoid loop when vq is broken in virtqueue_poll
...mst at redhat.com>
Acked-by: Jason Wang <jasowang at redhat.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
drivers/virtio/virtio_ring.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index a01a41a412693..6b3565feddb21 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -603,6 +603,9 @@ bool virtqueue_poll(struct virtqueue *_vq, unsigned last_used_idx)
{
struct vring_virtqueue *vq = to_vvq(_vq);
+ if (unlikely(vq->broken))
+ return false;
+
virtio_mb(vq->weak_barriers);...