2011-03-17 09:21:37

by Qian Cai

[permalink] [raw]
Subject: kdump regression related to usb3 hub update

Hello Sarah and others,

There is a regression using the latest Sarah's xhci hubs-v3-rebase tree, kdump kernel reset itself (log at the end of email). The first kernel also setup using IOMMU (intel_iommu=on). Removed intel_iommu=on from the kdump kernel parameter alone did not solve the problem. This is only reproducible when the first kernel is using IOMMU.

My environment setup is:

PCI-E card -> USB3 Disk
-> USB3 Hub -> USB3 Disk
-> USB2 Hub -> USB2 Disk

I have been identified one or a few of the following patches caused the problem but need more time to narrow it down.

288ead45fa6637e959015d055304f521cbbc0575
USB: remove bogus USB_PORT_FEAT_*_SPEED symbols

0eadcc09203349b11ca477ec367079b23d32ab91
usb: USB3.0 ch11 definitions

b1a72b70bbb82237b1041c78edee305503f6da31
USB: Remove bitmap #define from hcd.h

50e6c947c6340f7ba81deca99e8a37f458a00e49
USB: Fix usb_add_hcd() checkpatch errors.

0abde136582234dd720270ec3d5aeba69eae4d03
xhci: Rework port suspend structures for limited ports.

8c0d6f920004f065c2571f32b7c28e7f850e9810
xhci: Rename variables and reduce register reads.

ba764f4b37e2bcce069f6c9d96b8374ee85257ed
USB 3.0 Hub Changes

Loading usb-storage.ko module
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
Waiting 8 seconds for driver initialization.
usb 7-1: New USB device found, idVendor=046d, idProduct=08af
usb 7-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 7-2: new low speed USB device number 3 using uhci_hcd
usb 7-2: New USB device found, idVendor=0624, idProduct=0307
usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 7-2: Product: Avocent DSRIQ-USB
usb 7-2: Manufacturer: Avocent
input: Avocent Avocent DSRIQ-USB as /devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.0/input/input1
generic-usb 0003:0624:0307.0001: input,hidraw0: USB HID v1.10 Keyboard [Avocent Avocent DSRIQ-USB] on usb-0000:00:1d.2-2/input0
input: Avocent Avocent DSRIQ-USB as /devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.1/input/input2
generic-usb 0003:0624:0307.0002: input,hidraw1: USB HID v1.10 Mouse [Avocent Avocent DSRIQ-USB] on usb-0000:00:1d.2-2/input1
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbfb000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
Loading mii.ko module
Loading v4l2-compat-ioctl32.ko module
Loading mmicrocode: CPU0 sig=0x206c2, pf=0x1, revision=0xc
icrocode.ko module
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbfa000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbf9000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbf8000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 402
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 502
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 602
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 702
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 2
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 102
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 202
DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
DRHD: handling fault status reg 302
DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
DMAR:[fault reason 01] Present bit in root entry is clear
<reset>
Initializing cgroup subsys cpuset
Linux version 2.6.38-rc5+ ....

Thanks.

CAI Qian


2011-03-18 06:19:52

by Qian Cai

[permalink] [raw]
Subject: Kdump failed with Intel IOMMU (WAS Re: kdump regression related to usb3 hub update)

Sorry, this has nothing to do with usb3 hub update. I made a mistake that passed amd_iommu=on instead intel_iommu=on to the successful base kernel run. Hence, it passed once there and all testing for other kernels used the right parameters were failed.

The problem is still there though. Since this is the first time test this setup, not sure if this is regression or not.

CAI Qian

----- Original Message -----
> Hello Sarah and others,
>
> There is a regression using the latest Sarah's xhci hubs-v3-rebase
> tree, kdump kernel reset itself (log at the end of email). The first
> kernel also setup using IOMMU (intel_iommu=on). Removed intel_iommu=on
> from the kdump kernel parameter alone did not solve the problem. This
> is only reproducible when the first kernel is using IOMMU.
>
> My environment setup is:
>
> PCI-E card -> USB3 Disk
> -> USB3 Hub -> USB3 Disk
> -> USB2 Hub -> USB2 Disk
>
> I have been identified one or a few of the following patches caused
> the problem but need more time to narrow it down.
>
> 288ead45fa6637e959015d055304f521cbbc0575
> USB: remove bogus USB_PORT_FEAT_*_SPEED symbols
>
> 0eadcc09203349b11ca477ec367079b23d32ab91
> usb: USB3.0 ch11 definitions
>
> b1a72b70bbb82237b1041c78edee305503f6da31
> USB: Remove bitmap #define from hcd.h
>
> 50e6c947c6340f7ba81deca99e8a37f458a00e49
> USB: Fix usb_add_hcd() checkpatch errors.
>
> 0abde136582234dd720270ec3d5aeba69eae4d03
> xhci: Rework port suspend structures for limited ports.
>
> 8c0d6f920004f065c2571f32b7c28e7f850e9810
> xhci: Rename variables and reduce register reads.
>
> ba764f4b37e2bcce069f6c9d96b8374ee85257ed
> USB 3.0 Hub Changes
>
> Loading usb-storage.ko module
> Initializing USB Mass Storage driver...
> usbcore: registered new interface driver usb-storage
> USB Mass Storage support registered.
> Waiting 8 seconds for driver initialization.
> usb 7-1: New USB device found, idVendor=046d, idProduct=08af
> usb 7-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> usb 7-2: new low speed USB device number 3 using uhci_hcd
> usb 7-2: New USB device found, idVendor=0624, idProduct=0307
> usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> usb 7-2: Product: Avocent DSRIQ-USB
> usb 7-2: Manufacturer: Avocent
> input: Avocent Avocent DSRIQ-USB as
> /devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.0/input/input1
> generic-usb 0003:0624:0307.0001: input,hidraw0: USB HID v1.10 Keyboard
> [Avocent Avocent DSRIQ-USB] on usb-0000:00:1d.2-2/input0
> input: Avocent Avocent DSRIQ-USB as
> /devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.1/input/input2
> generic-usb 0003:0624:0307.0002: input,hidraw1: USB HID v1.10 Mouse
> [Avocent Avocent DSRIQ-USB] on usb-0000:00:1d.2-2/input1
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbfb000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> Loading mii.ko module
> Loading v4l2-compat-ioctl32.ko module
> Loading mmicrocode: CPU0 sig=0x206c2, pf=0x1, revision=0xc
> icrocode.ko module
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbfa000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbf9000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbf8000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> <reset>
> Initializing cgroup subsys cpuset
> Linux version 2.6.38-rc5+ ....
>
> Thanks.
>
> CAI Qian

2011-04-18 18:48:13

by Sarah Sharp

[permalink] [raw]
Subject: Re: kdump regression related to usb3 hub update

CAI, the hubs-v3-rebase branch is no longer up-to-date. You should just
use Greg's usb-linus branch instead. (The patches went through a couple
revs after the hubs-v3-rebase branch was abandoned.) I'll be cleaning
out my xHCI branches shortly.

Sarah Sharp

On Thu, Mar 17, 2011 at 05:21:29AM -0400, CAI Qian wrote:
> Hello Sarah and others,
>
> There is a regression using the latest Sarah's xhci hubs-v3-rebase tree, kdump kernel reset itself (log at the end of email). The first kernel also setup using IOMMU (intel_iommu=on). Removed intel_iommu=on from the kdump kernel parameter alone did not solve the problem. This is only reproducible when the first kernel is using IOMMU.
>
> My environment setup is:
>
> PCI-E card -> USB3 Disk
> -> USB3 Hub -> USB3 Disk
> -> USB2 Hub -> USB2 Disk
>
> I have been identified one or a few of the following patches caused the problem but need more time to narrow it down.
>
> 288ead45fa6637e959015d055304f521cbbc0575
> USB: remove bogus USB_PORT_FEAT_*_SPEED symbols
>
> 0eadcc09203349b11ca477ec367079b23d32ab91
> usb: USB3.0 ch11 definitions
>
> b1a72b70bbb82237b1041c78edee305503f6da31
> USB: Remove bitmap #define from hcd.h
>
> 50e6c947c6340f7ba81deca99e8a37f458a00e49
> USB: Fix usb_add_hcd() checkpatch errors.
>
> 0abde136582234dd720270ec3d5aeba69eae4d03
> xhci: Rework port suspend structures for limited ports.
>
> 8c0d6f920004f065c2571f32b7c28e7f850e9810
> xhci: Rename variables and reduce register reads.
>
> ba764f4b37e2bcce069f6c9d96b8374ee85257ed
> USB 3.0 Hub Changes
>
> Loading usb-storage.ko module
> Initializing USB Mass Storage driver...
> usbcore: registered new interface driver usb-storage
> USB Mass Storage support registered.
> Waiting 8 seconds for driver initialization.
> usb 7-1: New USB device found, idVendor=046d, idProduct=08af
> usb 7-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> usb 7-2: new low speed USB device number 3 using uhci_hcd
> usb 7-2: New USB device found, idVendor=0624, idProduct=0307
> usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> usb 7-2: Product: Avocent DSRIQ-USB
> usb 7-2: Manufacturer: Avocent
> input: Avocent Avocent DSRIQ-USB as /devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.0/input/input1
> generic-usb 0003:0624:0307.0001: input,hidraw0: USB HID v1.10 Keyboard [Avocent Avocent DSRIQ-USB] on usb-0000:00:1d.2-2/input0
> input: Avocent Avocent DSRIQ-USB as /devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.1/input/input2
> generic-usb 0003:0624:0307.0002: input,hidraw1: USB HID v1.10 Mouse [Avocent Avocent DSRIQ-USB] on usb-0000:00:1d.2-2/input1
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbfb000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> Loading mii.ko module
> Loading v4l2-compat-ioctl32.ko module
> Loading mmicrocode: CPU0 sig=0x206c2, pf=0x1, revision=0xc
> icrocode.ko module
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbfa000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbf9000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr ffbf8000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 402
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 502
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 602
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 702
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 2
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 102
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 202
> DMAR:[DMA Write] Request device [0b:00.1] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> DRHD: handling fault status reg 302
> DMAR:[DMA Write] Request device [0b:00.0] fault addr fffff000
> DMAR:[fault reason 01] Present bit in root entry is clear
> <reset>
> Initializing cgroup subsys cpuset
> Linux version 2.6.38-rc5+ ....
>
> Thanks.
>
> CAI Qian
> --
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