vhost: fix zcopy reference counting



Fix get/put refcount imbalance with zero copy,
which caused qemu to hang forever on guest driver unload.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

parent 2723feaa

drivers/vhost/vhost.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -1578,7 +1578,6 @@ struct vhost_ubuf_ref vhost_ubuf_alloc(struct vhost_virtqueue vq,
		if (!ubufs)
		return ERR_PTR(-ENOMEM);
		kref_init(&ubufs->kref);
		kref_get(&ubufs->kref);
		init_waitqueue_head(&ubufs->wait);
		ubufs->vq = vq;
		return ubufs;