DMAR/DRHD Errors On Fedora 13 Kernel
Robert L Cochran
cochranb at speakeasy.net
Tue May 18 02:14:40 UTC 2010
The error messages shown below are being emitted by my Fedora 13 kernel.
In fact, I see the same messages on any kernel newer than 2.6.31.12 in
Fedora 12, too. Does anyone have a suggestion about what the problem
could be?
Hardware is a Dell Latitude E6400 which has been updated to the latest
A20 BIOS. I am using a Dell-branded docking station with this laptop
about 99.99999% of the time. I've included some normal messages for
context, then the error messages follow. I get thousands of these.
May 17 16:53:34 deafeng29 kernel: CPU0: Thermal monitoring enabled (TM2)
May 17 16:53:34 deafeng29 kernel: using mwait in idle threads.
May 17 16:53:34 deafeng29 kernel: Performance Events: Core2 events,
Intel PMU driver.
May 17 16:53:34 deafeng29 kernel: ... version: 2
May 17 16:53:34 deafeng29 kernel: ... bit width: 40
May 17 16:53:34 deafeng29 kernel: ... generic registers: 2
May 17 16:53:34 deafeng29 kernel: ... value mask:
000000ffffffffff
May 17 16:53:34 deafeng29 kernel: ... max period:
000000007fffffff
May 17 16:53:34 deafeng29 kernel: ... fixed-purpose events: 3
May 17 16:53:34 deafeng29 kernel: ... event mask:
0000000700000003
May 17 16:53:34 deafeng29 kernel: ACPI: Core revision 20091214
May 17 16:53:34 deafeng29 kernel: DMAR: Host address width 36
May 17 16:53:34 deafeng29 kernel: DMAR: DRHD base: 0x000000fed10000
flags: 0x0
May 17 16:53:34 deafeng29 kernel: IOMMU fed10000: ver 1:0 cap
c9008020e30260 ecap 1000
May 17 16:53:34 deafeng29 kernel: DMAR: DRHD base: 0x000000fed12000
flags: 0x0
May 17 16:53:34 deafeng29 kernel: IOMMU fed12000: ver 1:0 cap
c0000020630270 ecap 1000
May 17 16:53:34 deafeng29 kernel: DMAR: DRHD base: 0x000000fed13000
flags: 0x1
May 17 16:53:34 deafeng29 kernel: IOMMU fed13000: ver 1:0 cap
c9008020630260 ecap 1000
May 17 16:53:34 deafeng29 kernel: DMAR: RMRR base: 0x000000dfbe7000 end:
0x000000dfbfffff
May 17 16:53:34 deafeng29 kernel: DMAR: No ATSR found
May 17 16:53:34 deafeng29 kernel: Setting APIC routing to flat
May 17 16:53:34 deafeng29 kernel: ..TIMER: vector=0x30 apic1=0 pin1=2
apic2=-1 pin2=-1
May 17 16:53:34 deafeng29 kernel: CPU0: Intel(R) Core(TM)2 Duo CPU
P9500 @ 2.53GHz stepping 06
May 17 16:53:34 deafeng29 kernel: Booting Node 0, Processors #1 Ok.
May 17 16:53:34 deafeng29 kernel: Brought up 2 CPUs
May 17 16:53:34 deafeng29 kernel: Total of 2 processors activated
(10107.92 BogoMIPS).
May 17 16:53:34 deafeng29 kernel: devtmpfs: initialized
May 17 16:53:34 deafeng29 kernel: regulator: core version 0.5
May 17 16:53:34 deafeng29 kernel: Time: 20:53:01 Date: 05/17/10
.......
.......
May 17 16:53:39 deafeng29 ntpd[1723]: Deferring DNS for
0.fedora.pool.ntp.org 1
May 17 16:53:39 deafeng29 ntpd[1723]: Deferring DNS for
1.fedora.pool.ntp.org 1
May 17 16:53:39 deafeng29 ntpd[1723]: Deferring DNS for
2.fedora.pool.ntp.org 1
May 17 16:53:39 deafeng29 ntpd[1723]: 0.0.0.0 c016 06 restart
May 17 16:53:39 deafeng29 ntpd[1723]: 0.0.0.0 c012 02 freq_set kernel
0.000 PPM
May 17 16:53:39 deafeng29 ntpd[1723]: 0.0.0.0 c011 01 freq_not_set
May 17 16:53:40 deafeng29 abrtd: Registered Reporter plugin 'Bugzilla'
May 17 16:53:40 deafeng29 abrtd: Registered Analyzer plugin 'Python'
May 17 16:53:40 deafeng29 abrtd: Registered Reporter plugin 'Logger'
May 17 16:53:40 deafeng29 abrtd: Registered Reporter plugin
'KerneloopsReporter'
May 17 16:53:40 deafeng29 abrtd: Registered Action plugin
'KerneloopsScanner'
May 17 16:53:40 deafeng29 abrtd: Registered Analyzer plugin 'Kerneloops'
May 17 16:53:40 deafeng29 abrtd: Registered Analyzer plugin 'CCpp'
May 17 16:53:40 deafeng29 abrtd: Init complete, entering main loop
May 17 16:53:42 deafeng29 kernel: [drm] nouveau 0000:01:00.0: Allocating
FIFO number 2
May 17 16:53:42 deafeng29 kernel: [drm] nouveau 0000:01:00.0:
nouveau_channel_alloc: initialised FIFO 2
May 17 16:53:42 deafeng29 kernel: btusb_intr_complete: hci0 urb
ffff880106ce2180 failed to resubmit (1)
May 17 16:53:42 deafeng29 kernel: btusb_bulk_complete: hci0 urb
ffff880106ce2000 failed to resubmit (1)
May 17 16:53:42 deafeng29 kernel: btusb_bulk_complete: hci0 urb
ffff880106ce20c0 failed to resubmit (1)
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
May 17 16:53:43 deafeng29 kernel: DMAR:[DMA Read] Request device
[01:00.0] fault addr 0
May 17 16:53:43 deafeng29 kernel: DMAR:[fault reason 07] Next page table
ptr is invalid
May 17 16:53:43 deafeng29 kernel: DRHD: handling fault status reg 2
........
Linux deafeng29.signtype.info 2.6.33.3-85.fc13.x86_64 #1 SMP Thu May 6
18:09:49 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
Thanks
Bob Cochran
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