commit dad61a4af7d23146ce67ec2f069f6ba9b75a578d
Author: Patrick McHardy <kaber@xxxxxxxxx>
Date: Wed Feb 6 14:35:11 2008 +0100
[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 <kaber@xxxxxxxxx>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 8842ecb..525787b 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);
