Hi,
in some accident caused by wanting to create the .config/compile the kernel for my new laptop (thinkpad t500) before the desperately needed sleeping I activated DMAR...
I don't know if this is relevant, but I though i better report it.
This was on fb478da5ba69ecf40729ae8ab37ca406b1e5be48 - sometime after 2.6.27-
rc7
I stumbled over two buglets:
First:
[ 4184.617392] DMAR:[DMA Read] Request device [03:00.0] fault addr fa946000 [ 4184.617393] DMAR:[fault reason 06] PTE Read access is not set
[ 4184.644081] iwlagn: Microcode HW error detected. Restarting.
[ 4186.646000] psmouse.c: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
[ 4186.683034] Registered led device: iwl-phy0:radio
[ 4186.683478] Registered led device: iwl-phy0:assoc
[ 4186.683793] Registered led device: iwl-phy0:RX
[ 4186.684094] Registered led device: iwl-phy0:TX
[ 4186.689749] wlan0: authenticate with AP 00:1d:7e:42:fe:42
[ 4186.691691] wlan0: authenticated
[ 4186.691705] wlan0: associate with AP 00:1d:7e:42:fe:42
[ 4186.696380] wlan0: RX ReassocResp from 00:1d:7e:42:fe:42 (capab=0x411 status=0 aid=2)
[ 4186.696392] wlan0: associated
Most of the time when this happened, the machine wasnt reacting for 1-3 seconds and had audio buffer underruns, but I also had a hard lockup which I couldnt diagnose so far.
Second:
[ 2937.484251] DMAR:[DMA Read] Request device [00:1f.2] fault addr fffbf000 [ 2937.484255] DMAR:[fault reason 06] PTE Read access is not set
[ 2937.484297] ata1.00: exception Emask 0x60 SAct 0x1 SErr 0x800 action 0x6 frozen
[ 2937.484303] ata1.00: irq_stat 0x20000000, host bus error
[ 2937.484309] ata1: SError: { HostInt }
[ 2937.484319] ata1.00: cmd 61/08:00:c0:1d:6b/00:00:07:00:00/40 tag 0 ncq 4096 out
[ 2937.484321] res 40/00:00:c0:1d:6b/00:00:07:00:00/40 Emask 0x60 (host bus error)