From: Patrick McHardy <kaber@trash.net>
Date: Tue, 21 Feb 2006 21:37:35 +0000 (-0800)
Subject: [NETFILTER]: Fix bridge netfilter related in xfrm_lookup
X-Git-Tag: v2.6.16-rc5~54^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42cf93cd464e0df3c85d298c647411bae6d99e6e;p=pandora-kernel.git

[NETFILTER]: Fix bridge netfilter related in xfrm_lookup

The bridge-netfilter code attaches a fake dst_entry with dst->ops == NULL
to purely bridged packets. When these packets are SNATed and a policy
lookup is done, xfrm_lookup crashes because it tries to dereference
dst->ops.

Change xfrm_lookup not to dereference dst->ops before checking for the
DST_NOXFRM flag and set this flag in the fake dst_entry.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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