netdev - Re: Kernel panic with the b44 driver in 2.6.35-rc1

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Message-ID: <4C054C22.2090309@tvcablenet.be>
Date:	Tue, 01 Jun 2010 20:06:26 +0200
From:	François Valenduc 
	<francois.valenduc@...ablenet.be>
To:	netdev@...r.kernel.org
Subject: Re: Kernel panic with the b44 driver in 2.6.35-rc1

Le 01/06/10 15:33, John W. Linville a écrit :
> On Mon, May 31, 2010 at 09:58:43PM +0200, news.gmane.org wrote:
> 
>> I have a kernel panic at startup with the b44 driver with the 2.6.35-rc1
>> kernel. I have submitted a bug report (see
>> https://bugzilla.kernel.org/show_bug.cgi?id=16074) but until know, I
>> din't get any answer yet. Does anybody knows what's happening. I have
>> tried several git-bisect run but I didn't find any conclusive result.
>> The first bad-commit was different each time and if I revert it, the
>> problem still occurs anyway.
> 
> This patch is already on its way to Linus -- it should fix the problem
> you are seeing:
> 
> commit da1fdb02d9200ff28b6f3a380d21930335fe5429
> Author: Christoph Fritz <chf.fritz@...glemail.com>
> Date:   Fri May 28 10:45:59 2010 +0200
> 
>     ssb: fix NULL ptr deref when pcihost_wrapper is used
>     
>     Ethernet driver b44 does register ssb by it's pcihost_wrapper
>     and doesn't set ssb_chipcommon. A check on this value
>     introduced with commit d53cdbb94a52a920d5420ed64d986c3523a56743
>     and ea2db495f92ad2cf3301623e60cb95b4062bc484 triggers:
>     
>     BUG: unable to handle kernel NULL pointer dereference at 00000010
>     IP: [<c1266c36>] ssb_is_sprom_available+0x16/0x30
>     
>     Signed-off-by: Christoph Fritz <chf.fritz@...glemail.com>
>     Signed-off-by: John W. Linville <linville@...driver.com>
> 
This patch indeed solve my problem.

Thanks for your help,
François Valenduc

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