sunvnet: fix NULL pointer dereference

This patch fixes a NULL pointer dereference when __tx_port_find() doesn't
find a matching port.

Signed-off-by: David L Stevens <david.stevens@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 55d66c9a6627..a556eba8eeed 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -958,6 +958,8 @@ vnet_select_queue(struct net_device *dev, struct sk_buff *skb,
         struct vnet *vp = netdev_priv(dev);
         struct vnet_port *port = __tx_port_find(vp, skb);
 
+        if (port == NULL)
+                return 0;
         return port->q_index;
 }