From: Timo Teräs <timo.teras@iki.fi>
Date: Thu, 24 Jun 2010 21:35:00 +0000 (-0700)
Subject: xfrm: check bundle policy existance before dereferencing it
X-Git-Tag: v2.6.35-rc4~54^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b1312c89f0016f778cac4f1536f1434e132f8713;p=pandora-kernel.git

xfrm: check bundle policy existance before dereferencing it

Fix the bundle validation code to not assume having a valid policy.
When we have multiple transformations for a xfrm policy, the bundle
instance will be a chain of bundles with only the first one having
the policy reference. When policy_genid is bumped it will expire the
first bundle in the chain which is equivalent of expiring the whole
chain.

Reported-bisected-and-tested-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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