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

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Date:	Tue, 4 Jan 2011 23:38:24 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Mario 'BitKoenig' Holbe <Mario.Holbe@...Ilmenau.DE>,
	Larry Finger <Larry.Finger@...inger.net>,
	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 Tue, Jan 04, 2011 at 01:19:57PM +0100, Mario 'BitKoenig' Holbe wrote:
>
> Hmmm, yes - the patch fixes the crashes, i.e. no more crashes with
> either sequence of module-loading, cat rng_available works as well,
> but...
> 
> Having this patch active rngd complains:
> 	rngd[1435]: rngd 2-unofficial-mt.13 starting up...
> 	rngd[1435]: block failed FIPS test: 0x1f
> 	rngd[1435]: block failed FIPS test: 0x1f
> 	...
> 	rngd[1435]: stats: entropy added to kernel pool: 0
> 	rngd[1435]: stats: FIPS 140-2 successes: 0
> 	rngd[1435]: stats: FIPS 140-2 failures: 10
> 
> It doesn't do this without the patch.
> The only available rng was via, I did blacklist the others just to be
> sure.

Hmm, can you print out what it's actually producing (e.g., by
stracing rngd)?

Can you also double-check that this doesn't happen with Larry's
patch?

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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