Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (35 commits)
  NET: SB1250: Initialize .owner
  vxge: show startup message with KERN_INFO
  ll_temac: Fix missing iounmaps
  bridge: Clear IPCB before possible entry into IP stack
  bridge br_multicast: BUG: unable to handle kernel NULL pointer dereference
  net: Fix definition of netif_vdbg() when VERBOSE_DEBUG is defined
  net/ne: fix memory leak in ne_drv_probe()
  xfrm: fix xfrm by MARK logic
  virtio_net: fix oom handling on tx
  virtio_net: do not reschedule rx refill forever
  s2io: resolve statistics issues
  linux/net.h: fix kernel-doc warnings
  net: decreasing real_num_tx_queues needs to flush qdisc
  sched: qdisc_reset_all_tx is calling qdisc_reset without qdisc_lock
  qlge: fix a eeh handler to not add a pending timer
  qlge: Replacing add_timer() to mod_timer()
  usbnet: Set parent device early for netdev_printk()
  net: Revert "rndis_host: Poll status channel before control channel"
  netfilter: ip6t_REJECT: fix a dst leak in ipv6 REJECT
  drivers: bluetooth: bluecard_cs.c: Fixed include error, changed to linux/io.h
  ...

1 files changed, 10 insertions, 2 deletions

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index df5b6b971f26..57a593c58cf4 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -98,7 +98,8 @@ static void tx_poll_start(struct vhost_net *net, struct socket *sock)
 static void handle_tx(struct vhost_net *net)
 {
         struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_TX];
-        unsigned head, out, in, s;
+        unsigned out, in, s;
+        int head;
         struct msghdr msg = {
                 .msg_name = NULL,
                 .msg_namelen = 0,
@@ -135,6 +136,9 @@ static void handle_tx(struct vhost_net *net)
                                          ARRAY_SIZE(vq->iov),
                                          &out, &in,
                                          NULL, NULL);
+                /* On error, stop handling until the next kick. */
+                if (unlikely(head < 0))
+                        break;
                 /* Nothing new?  Wait for eventfd to tell us they refilled. */
                 if (head == vq->num) {
                         wmem = atomic_read(&sock->sk->sk_wmem_alloc);
@@ -192,7 +196,8 @@ static void handle_tx(struct vhost_net *net)
 static void handle_rx(struct vhost_net *net)
 {
         struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_RX];
-        unsigned head, out, in, log, s;
+        unsigned out, in, log, s;
+        int head;
         struct vhost_log *vq_log;
         struct msghdr msg = {
                 .msg_name = NULL,
@@ -228,6 +233,9 @@ static void handle_rx(struct vhost_net *net)
                                          ARRAY_SIZE(vq->iov),
                                          &out, &in,
                                          vq_log, &log);
+                /* On error, stop handling until the next kick. */
+                if (unlikely(head < 0))
+                        break;
                 /* OK, now we need to know about added descriptors. */
                 if (head == vq->num) {
                         if (unlikely(vhost_enable_notify(vq))) {