From: David L Stevens <david.stevens@oracle.com>
Date: Wed, 12 Nov 2014 15:58:47 +0000 (-0500)
Subject: sunvnet: fix NULL pointer dereference
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c647cc3fd5ee3c3aba34a00326e684684d491de0;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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>
---

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;
 }