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    SubjectRe: io_page_fault seen in normal kernel boot log
    On 09/05/16 at 11:59am, Joerg Roedel wrote:
    > Hi Baoquan
    >
    > On Mon, Sep 05, 2016 at 01:38:05PM +0800, Baoquan He wrote:
    > > This happened on 4.8.0-rc5
    > >
    > > [ +0.006771] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001000 flags=0x0000]
    > > [ +0.010593] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001040 flags=0x0000]
    > > [ +0.010596] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001080 flags=0x0000]
    > > [ +0.010597] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x00000000000010c0 flags=0x0000]
    > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001100 flags=0x0000]
    > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001140 flags=0x0000]
    >
    > This is probably a radeon driver issue, the address looks like its
    > handed out by the IOMMU driver, so probably a use-after-free bug. I also
    > see those GPU related faults from time to time. The system usually boots
    > fine anyway. Does boot complete on that system?

    Yes, except for this message, system is not impacted.

    >
    >
    > Regards,
    >
    > Joerg
    >

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