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-rw-r--r--sys/dev/virtio/block/virtio_blk.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/virtio/block/virtio_blk.c b/sys/dev/virtio/block/virtio_blk.c
index 9442a6d..d05fa7a 100644
--- a/sys/dev/virtio/block/virtio_blk.c
+++ b/sys/dev/virtio/block/virtio_blk.c
@@ -997,6 +997,7 @@ vtblk_poll_request(struct vtblk_softc *sc, struct vtblk_request *req)
{
device_t dev;
struct virtqueue *vq;
+ struct vtblk_request *r;
int error;
dev = sc->vtblk_dev;
@@ -1011,7 +1012,8 @@ vtblk_poll_request(struct vtblk_softc *sc, struct vtblk_request *req)
virtqueue_notify(vq);
- req = virtqueue_poll(vq, NULL);
+ r = virtqueue_poll(vq, NULL);
+ KASSERT(r == req, ("unexpected request response"));
error = vtblk_request_error(req);
if (error && bootverbose) {
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