From: Julian Anastasov <ja@ssi.bg>
Date: Sun, 29 May 2011 20:42:29 +0000 (+0300)
Subject: netfilter: nf_nat: fix crash in nf_nat_csum
X-Git-Tag: v3.0-rc3~13^2~28^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9be76f38526dccf84062e3ac3ed3a6a97698565;p=pandora-kernel.git

netfilter: nf_nat: fix crash in nf_nat_csum

Fix crash in nf_nat_csum when mangling packets
in OUTPUT hook where skb->dev is not defined, it is set
later before POSTROUTING. Problem happens for CHECKSUM_NONE.
We can check device from rt but using CHECKSUM_PARTIAL
should be safe (skb_checksum_help).

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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