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

Rafael J. Wysocki
2011-06-29T19:32:12Z

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-bJEeYj9oJeDQT0dZR+AlfA@public.gmane.org>
> > Date : 2011-06-03 4:56 (24 days old)
> > Message-ID : <4478124.OuFNgaPiHS-RRHT56Q3PSMGBMjmSbuoWl6hYfS7NtTn@public.gmane.org>
> > References : http://marc.info/?l=linux-kernel&m=130707737616116&w=2

Thanks for the update.

Rafael