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    SubjectRe: "exception Emask: 0x42" errors with 2.6.22.x and SATA drives
    On Fri, 24 Aug 2007 14:39:10 +0100
    "Dermot Bradley" <dermot.bradley@sla-mobile.com> wrote:

    > I've just built a new machine using a ASUS M2A-VM boardboard (ATI SB600
    > chipset), AMD X2 3800+ processor, and 2 Western Digital 2.5" 80Gb drives
    > running in RAID-1 using MD. I've had these problems with both 2.6.22.1
    > and now 2.6.22.5 kernels.
    >
    > I'm getting the following errors on occasion:
    >
    > Aug 24 13:19:22 playpbx kernel: APIC error on CPU0: 00(40)
    > Aug 24 13:19:33 playpbx kernel: APIC error on CPU0: 40(40)

    This is not good.

    > Aug 24 13:55:31 playpbx kernel: ata3.00: exception Emask 0x42 SAct
    > 0x7fc77 SErr0x800 action 0x6 frozen
    > Aug 24 13:55:31 playpbx kernel: ata3.00: (spurious completions during
    > NCQ issue=0x0 SAct=0x7fc77 FIS=004040a1:00000008)

    Probably not connected - your drive seems to be talking rubbish

    Neither are good, the latter is probably a drive firmware problem and the
    kernel will give up using NCQ with it if it keeps doing that, which
    should be just fine.
    -
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