From 2614fa59fa805cd488083c5602eb48533cdbc018 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 29 Jan 2008 21:11:46 -0800 Subject: [IPCOMP]: Fetch nexthdr before ipch is destroyed When I moved the nexthdr setting out of IPComp I accidently moved the reading of ipch->nexthdr after the decompression. Unfortunately this means that we'd be reading from a stale ipch pointer which doesn't work very well. This patch moves the reading up so that we get the correct nexthdr value. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv4/ipcomp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/ipv4/ipcomp.c') diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c index f4af99ad8fdb..b79cdbee68a9 100644 --- a/net/ipv4/ipcomp.c +++ b/net/ipv4/ipcomp.c @@ -74,6 +74,7 @@ out: static int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb) { + int nexthdr; int err = -ENOMEM; struct ip_comp_hdr *ipch; @@ -84,13 +85,15 @@ static int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb) /* Remove ipcomp header and decompress original payload */ ipch = (void *)skb->data; + nexthdr = ipch->nexthdr; + skb->transport_header = skb->network_header + sizeof(*ipch); __skb_pull(skb, sizeof(*ipch)); err = ipcomp_decompress(x, skb); if (err) goto out; - err = ipch->nexthdr; + err = nexthdr; out: return err; -- cgit v1.2.3-58-ga151