[XFRM_TUNNEL]: Reload header pointer after pskb_may_pull/pskb_expand_head

           Please consider applying, this was found on your latest
net-2.6 tree while playing around with that ip_hdr() + turn
skb->nh/h/mac pointers  as offsets on 64 bits idea :-)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index e1cab33fdad1..ceb4376f572a 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -111,6 +111,7 @@ static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
             (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
                 goto out;
 
+        iph = skb->nh.iph;
         if (iph->protocol == IPPROTO_IPIP) {
                 if (x->props.flags & XFRM_STATE_DECAP_DSCP)
                         ipv4_copy_dscp(iph, skb->h.ipiph);