netdev - Re: [RFC XFRM]: esp: fix scatterlist of out bounds access with crypto

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Message-ID: <20080429014107.GA16700@gondor.apana.org.au>
Date:	Tue, 29 Apr 2008 09:41:07 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	linux-crypto@...r.kernel.org,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [RFC XFRM]: esp: fix scatterlist of out bounds access with crypto_eseqiv

Hi Patrick:

On Mon, Apr 28, 2008 at 08:55:21PM +0200, Patrick McHardy wrote:
> I ran into occasional BUGs in scatterlist.h, which turned
> out the be caused by accessing an uninitialized scatterlist
> entry from eseqiv. I'm not sure whether this patch is correct
> since I'm seeing invalid packets with and without this patch
> (probably related to HIFN though) and I don't understand why
> scatterwalk_sg_next() returns either a scatterlist or a
> struct page dependant on the length, but at least it fixes
> the BUG() for me :)

Can you attach the BUG output please?

Thanks,
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