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Date:	Wed, 12 Sep 2007 05:46:56 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH net-2.6.23-rc5] ipsec interfamily route handling fix

From: Joakim Koskela <>
Date: Thu, 6 Sep 2007 19:00:10 +0300

> This patch addresses a couple of issues related to interfamily ipsec
> modes. The problem is that the structure of the routing info changes
> with the family during the __xfrmX_bundle_create, which hasn't been
> taken properly into account. Seems that by coincidence it hasn't
> caused problems on 32bit platforms, but crashes for example on x86_64
> in 6-4 around line 209 of xfrm6_policy.c as rt doesn't point to a
> rt6_info anymore, but actually a struct rtable. With 64bit pointers,
> the rt->rt6i_node pointer seems to hit something usually not null in
> the rtable that rt now points to, making it go for the path_cookie
> assignment and subsequently crashing.
> Tested on both 32/64bit with all four (44/46/64/66) combinations of
> transformation. I'm still a bit worried about how for example nested
> transformations work with all of this and would appreciate if someone
> more familiar with the details of these structs could comment.
> Signed-off-by: Joakim Koskela <>

This fix basically looks fine to me, but I'd like at least one
other person to review it too.
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