From: Li RongQing <roy.qing.li@gmail.com>
Date: Fri, 17 Oct 2014 08:53:23 +0000 (+0800)
Subject: ipv4: fix a potential use after free in ip_tunnel_core.c
X-Git-Tag: fixes-against-v3.18-rc2~61^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1245dfc8cadb258386fcd27df38215a0eccb1f17;p=pandora-kernel.git

ipv4: fix a potential use after free in ip_tunnel_core.c

pskb_may_pull() maybe change skb->data and make eth pointer oboslete,
so set eth after pskb_may_pull()

Fixes:3d7b46cd("ip_tunnel: push generic protocol handling to ip_tunnel module")
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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