linux-kernel - Re: 2.6.37-rc7: Regression: b43: crashes in hwrng

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Message-ID: <20101231003735.GA24101@gondor.apana.org.au>
Date:	Fri, 31 Dec 2010 11:37:35 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Mario 'BitKoenig' Holbe <Mario.Holbe@...Ilmenau.DE>,
	Matt Mackall <mpm@...enic.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
	Harald Welte <HaraldWelte@...tech.com>,
	Michal Ludvig <michal@...ix.cz>
Subject: Re: 2.6.37-rc7: Regression: b43: crashes in hwrng_register()

On Thu, Dec 30, 2010 at 04:49:05PM -0600, Larry Finger wrote:
>
> Do you see any problems in the code in drivers/net/wireless/b43/main.c or
> drivers/char/hw_random/via-rng.c. As the latter seems to make b43 fail, I am
> suspecting via-rng, but I have no proof.

My suspicion is that VIA's xstore is writing more than 4 bytes as
the list pointer happens to lie immediately after rng->priv which
is where xstore is writing to.

Harald, do you know whether this is documented or is this a known
errata item?

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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