linux-kernel - Re: [PATCH] x86/pci/mrst: add extra check in fixed bar detection

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Message-ID: <4C45DC30.5000308@zytor.com>
Date:	Tue, 20 Jul 2010 10:26:08 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ben Greear <greearb@...delatech.com>
CC:	Jacob Pan <jacob.jun.pan@...ux.intel.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	LKML <linux-kernel@...r.kernel.org>, Greg KH <greg@...ah.com>
Subject: Re: [PATCH] x86/pci/mrst: add extra check in fixed bar detection

On 07/20/2010 10:18 AM, Ben Greear wrote:
> On 07/16/2010 11:58 AM, Jacob Pan wrote:
>> Fixed bar capability structure is searched in PCI extended configuration
>> space. We need to make sure there is a valid capability id to begin with
>> otherwise, the search code may stuck in a infinite loop which results in
>> boot hang.
>> This patch adds additional check for cap ID 0, which is also invalid.
> 
> I think this should be added to the stable tree for 2.6.34
> as well...
> 

Agreed. Greg, could you consider upstream
f82c3d71d6fd2e6a3e3416f09099e29087e39abf for -stable 2.6.34?

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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