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[IPV4]: route: fix crash ip_route_input

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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@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2008-02-07 17:58:20 -08:00 committed by David S. Miller
parent 5da621f1c5
commit 4136cd523e
1 changed files with 1 additions and 1 deletions
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net/ipv4/route.c
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@ -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);