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: <2202361.0SXGgnGr4r@segfault.sh0n.net>
Date:	Mon, 27 Jun 2011 19:37:34 -0400
From:	Shawn Starr <shawn.starr@...ers.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
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 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
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