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>
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 46822c0..c16d225 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1578,7 +1578,6 @@
if (!ubufs)
return ERR_PTR(-ENOMEM);
kref_init(&ubufs->kref);
- kref_get(&ubufs->kref);
init_waitqueue_head(&ubufs->wait);
ubufs->vq = vq;
return ubufs;