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: syzbot+eb17c6162478cc50632c@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> --- drivers/vhost/net.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index c7bdeb6..5636c7c 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1208,6 +1208,7 @@ 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, umem); vhost_net_vq_reset(n); done: -- 2.7.4 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization