vhost_net: stop device during reset owner

[ Upstream commit 4cd8795 ] We don't stop device before reset owner, this means we could try to serve any virtqueue kick before reset dev->worker. This will result a warn since the work was pending at llist during owner resetting. Fix this by stopping device during owner reset. Reported-by: [email protected] Fixes: 3a4d5c9 ("vhost_net: a kernel-level virtio server") Signed-off-by: Jason Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
nemunaire · Feb 16, 2018 · 8cec497 · 8cec497
1 parent cde3537
commit 8cec497
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
@@ -1009,6 +1009,7 @@ static long vhost_net_reset_owner(struct vhost_net *n)
 	}
 	vhost_net_stop(n, &tx_sock, &rx_sock);
 	vhost_net_flush(n);
+	vhost_dev_stop(&n->dev);
 	vhost_dev_reset_owner(&n->dev, memory);
 	vhost_net_vq_reset(n);
 done: