From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steffen Klassert <steffen.klassert@secunet.com>
Subject: Re: [PATCH] xfrm: use ISO C standard for array in linux/xfrm.h
Date: Wed, 17 Oct 2012 10:27:31 +0200
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To: Nicolas Dichtel <nicolas.dichtel@6wind.com>
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On Wed, Oct 17, 2012 at 09:50:58AM +0200, Nicolas Dichtel wrote:
> We got a problem with "ip xfrm state add" when compiled with gcc 4.4.6.
> Error was "*** buffer overflow detected ***: ip terminated", because
> when we try to copy the key in struct xfrm_algo, the function
> strncpy() calls some builtin checks about the size of the
> destination buffer, which is 0. With the standard notation, there is
> no problem.

This is likely to be a gcc FORITFY bug. Try to build iproute2 with
the -D_FORTIFY_SOURCE=0 flag.