linux-kernel - Re: BUG: unable to handle kernel NULL pointer dereference at 000000000000000e (reset_prng

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Message-ID: <20080715115117.GA3300@elte.hu>
Date:	Tue, 15 Jul 2008 13:51:17 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Neil Horman <nhorman@...driver.com>
Cc:	Simon Arlott <simon@...e.lp0.eu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: BUG: unable to handle kernel NULL pointer dereference at
	000000000000000e (reset_prng_context)


* Ingo Molnar <mingo@...e.hu> wrote:

> i have just triggered this crash too. Please, when you know about 
> bootup crashes in your code send a patch to the lkml thread so that 
> people can apply it and have a working system.

here's the band-aid patch i'm using.

	Ingo

-------------->
commit 3fdcd29e5c272c66424ac7616fcd4a9a725bc206
Author: Ingo Molnar <mingo@...e.hu>
Date:   Tue Jul 15 13:34:15 2008 +0200

    crypto: exclude broken CRYPTO_PRNG code
    
    Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 crypto/Kconfig |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index ea50357..2cf66ca 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -670,6 +670,8 @@ comment "Random Number Generation"
 
 config CRYPTO_PRNG
 	tristate "Pseudo Random Number Generation for Cryptographic modules"
+	# causes bootup crashes with config-Tue_Jul_15_10_35_22_CEST_2008.bad
+	depends on 0
 	help
 	  This option enables the generic pseudo random number generator
 	  for cryptographic modules.  Uses the Algorithm specified in
--
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