From: Patrick McHardy Date: Fri, 8 Feb 2008 01:58:20 +0000 (-0800) Subject: [IPV4]: route: fix crash ip_route_input X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4136cd523eb0c0bd53173e16fd7406d31d05824f;p=deliverable%2Flinux.git [IPV4]: route: fix crash ip_route_input ip_route_me_harder() may call ip_route_input() with skbs that don't have skb->dev set for skbs rerouted in LOCAL_OUT and TCP resets generated by the REJECT target, resulting in a crash when dereferencing skb->dev->nd_net. Since ip_route_input() has an input device argument, it seems correct to use that one anyway. Bug introduced in b5921910a1 (Routing cache virtualization). Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 8842ecb9be48..525787b52b72 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2041,7 +2041,7 @@ int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr, int iif = dev->ifindex; struct net *net; - net = skb->dev->nd_net; + net = dev->nd_net; tos &= IPTOS_RT_MASK; hash = rt_hash(daddr, saddr, iif);