linux-kernel - Re: [Bug #37232] [3.0-rc1][NMI/DMAR][iwlagn] errors - PCI system error (SERR) for reason a1 on CPU 0

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Message-Id: <201106292132.12265.rjw@sisk.pl>
Date:	Wed, 29 Jun 2011 21:32:12 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Shawn Starr <shawn.starr@...ers.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Florian Mickler <florian@...kler.org>
Subject: Re: [Bug #37232] [3.0-rc1][NMI/DMAR][iwlagn] errors - PCI system error (SERR) for reason a1 on CPU 0

On Tuesday, June 28, 2011, Shawn Starr wrote:
> On Sunday, June 26, 2011 11:23:44 PM Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a summary report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.39.  Please verify if it still should be listed and let the
> > tracking team know (either way).
> > 
> This continues in -rc4, although Fedora has a patch to try to fix some DMAR 
> errors, it doesn't seem to work for me.
> 
> 03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] 
> Network Connection
> 
> [ 1046.002195] DMAR:[DMA Write] Request device [03:00.0] fault addr ffda6000 
> [ 1046.002198] DMAR:[fault reason 05] PTE Write access is not set
> [ 1048.189224] DRHD: handling fault status reg 2
> [ 1048.189240] DMAR:[DMA Write] Request device [03:00.0] fault addr ffd94000 
> [ 1048.189244] DMAR:[fault reason 05] PTE Write access is not set
> 
> $ uname -a
> Linux segfault.sh0n.net 3.0-0.rc4.git0.2.fc16.x86_64 #1 SMP Wed Jun 22 
> 16:27:16 UTC 2011 x86_64 x86_64 x
> 
> Perhaps someone from Intel can comment on why this broke recently? It's not 
> causing me issues, just noise in logs/dmesg.
> 
>
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=37232
> > Subject		: [3.0-rc1][NMI/DMAR][iwlagn] errors - PCI system error (SERR) 
> for
> > reason a1 on CPU 0 Submitter	: Shawn Starr <shawn.starr@...ers.com>
> > Date		: 2011-06-03 4:56 (24 days old)
> > Message-ID	: <4478124.OuFNgaPiHS@...fault.sh0n.net>
> > References	: http://marc.info/?l=linux-kernel&m=130707737616116&w=2

Thanks for the update.

Rafael
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