1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index ad37da2b6cb5..9777583218ff 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -17,6 +17,7 @@
 #include <linux/workqueue.h>
 #include <linux/rcupdate.h>
 #include <linux/file.h>
+#include <linux/slab.h>
 
 #include <linux/net.h>
 #include <linux/if_packet.h>
@@ -125,7 +126,7 @@ static void handle_tx(struct vhost_net *net)
         mutex_lock(&vq->mutex);
         vhost_disable_notify(vq);
 
-        if (wmem < sock->sk->sk_sndbuf * 2)
+        if (wmem < sock->sk->sk_sndbuf / 2)
                 tx_poll_stop(net);
         hdr_size = vq->hdr_size;
 
@@ -508,12 +509,12 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd)
         /* Verify that ring has been setup correctly. */
         if (!vhost_vq_access_ok(vq)) {
                 r = -EFAULT;
-                goto err;
+                goto err_vq;
         }
         sock = get_socket(fd);
         if (IS_ERR(sock)) {
                 r = PTR_ERR(sock);
-                goto err;
+                goto err_vq;
         }
 
         /* start polling new socket */
@@ -524,12 +525,14 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd)
         vhost_net_disable_vq(n, vq);
         rcu_assign_pointer(vq->private_data, sock);
         vhost_net_enable_vq(n, vq);
-        mutex_unlock(&vq->mutex);
 done:
         if (oldsock) {
                 vhost_net_flush_vq(n, index);
                 fput(oldsock->file);
         }
+
+err_vq:
+        mutex_unlock(&vq->mutex);
 err:
         mutex_unlock(&n->dev.mutex);
         return r;