From 22251c73ca63b5b1050724be9b54910c101a5f30 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Thu, 4 Apr 2013 15:41:27 +0000
Subject: [PATCH] ip_gre: fix a possible crash in parse_gre_header()

pskb_may_pull() can change skb->head, so we must init iph/greh after
calling it.

Bug added in commit c54419321455 (GRE: Refactor GRE tunneling code.)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
Reading git-format-patch failed