2012-11-27 15:16:04

by Justin Piszcz

[permalink] [raw]
Subject: 3.6.8: dmar: DRHD: handling fault status reg 602

Hello,

Any idea why this is happening (e.g. why is PTE Read Access not set?)

[ 13.204560] dmar: DRHD: handling fault status reg 602
[ 13.208078] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 13.208078] DMAR:[fault reason 06] PTE Read access is not set
[ 15.777874] dmar: DRHD: handling fault status reg 702
[ 15.777879] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 15.777879] DMAR:[fault reason 06] PTE Read access is not set
[ 16.100453] dmar: DRHD: handling fault status reg 2
[ 16.100458] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 16.100458] DMAR:[fault reason 06] PTE Read access is not set
[ 16.141058] dmar: DRHD: handling fault status reg 102
[ 16.141062] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 16.141062] DMAR:[fault reason 06] PTE Read access is not set
[ 16.210102] dmar: DRHD: handling fault status reg 202
[ 16.210111] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 16.210111] DMAR:[fault reason 06] PTE Read access is not set
[ 16.918149] ixgbe 0000:86:00.0: eth2: NIC Link is Up 10 Gbps, Flow
Control: RX/TX

This is from:
http://lkml.org/lkml/2012/11/27/263

Justin.


2012-11-27 15:16:47

by Justin Piszcz

[permalink] [raw]
Subject: RE: 3.6.8: dmar: DRHD: handling fault status reg 602


-----Original Message-----
From: Justin Piszcz [mailto:[email protected]]
Sent: Tuesday, November 27, 2012 10:16 AM
To: [email protected]
Subject: 3.6.8: dmar: DRHD: handling fault status reg 602

Hello,

Any idea why this is happening (e.g. why is PTE Read Access not set?)

[ 13.204560] dmar: DRHD: handling fault status reg 602
[ 13.208078] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 13.208078] DMAR:[fault reason 06] PTE Read access is not set
[ 15.777874] dmar: DRHD: handling fault status reg 702
[ 15.777879] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 15.777879] DMAR:[fault reason 06] PTE Read access is not set
[ 16.100453] dmar: DRHD: handling fault status reg 2
[ 16.100458] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 16.100458] DMAR:[fault reason 06] PTE Read access is not set
[ 16.141058] dmar: DRHD: handling fault status reg 102
[ 16.141062] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 16.141062] DMAR:[fault reason 06] PTE Read access is not set
[ 16.210102] dmar: DRHD: handling fault status reg 202
[ 16.210111] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
[ 16.210111] DMAR:[fault reason 06] PTE Read access is not set
[ 16.918149] ixgbe 0000:86:00.0: eth2: NIC Link is Up 10 Gbps, Flow
Control: RX/TX

This is from:
http://lkml.org/lkml/2012/11/27/263

Justin.

--

Hi,

Disregard, appears to be a nouveau bug:
https://bugzilla.redhat.com/show_bug.cgi?id=573173

Justin.

2012-11-28 01:18:02

by Robert Hancock

[permalink] [raw]
Subject: Re: 3.6.8: dmar: DRHD: handling fault status reg 602

On 11/27/2012 09:16 AM, Justin Piszcz wrote:
> Hello,
>
> Any idea why this is happening (e.g. why is PTE Read Access not set?)
>
> [ 13.204560] dmar: DRHD: handling fault status reg 602
> [ 13.208078] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
> [ 13.208078] DMAR:[fault reason 06] PTE Read access is not set
> [ 15.777874] dmar: DRHD: handling fault status reg 702
> [ 15.777879] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
> [ 15.777879] DMAR:[fault reason 06] PTE Read access is not set
> [ 16.100453] dmar: DRHD: handling fault status reg 2
> [ 16.100458] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
> [ 16.100458] DMAR:[fault reason 06] PTE Read access is not set
> [ 16.141058] dmar: DRHD: handling fault status reg 102
> [ 16.141062] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
> [ 16.141062] DMAR:[fault reason 06] PTE Read access is not set
> [ 16.210102] dmar: DRHD: handling fault status reg 202
> [ 16.210111] dmar: DMAR:[DMA Read] Request device [04:00.0] fault addr 0
> [ 16.210111] DMAR:[fault reason 06] PTE Read access is not set
> [ 16.918149] ixgbe 0000:86:00.0: eth2: NIC Link is Up 10 Gbps, Flow
> Control: RX/TX
>
> This is from:
> http://lkml.org/lkml/2012/11/27/263
>
> Justin.
>

From the dmesg you posted (and some comments on that thread) it might
have something to do with CONFIG_PCI_MMCONFIG being disabled. If so, try
enabling that.

Of course the DMAR stuff should be recovering from that more gracefully
if that's the problem.