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    SubjectRe: PS/2 Keyboard under 2.6.x
    Mark Knecht wrote:
    > I just reported this problem on the Gentoo bugzilla a couple of days
    > ago. Here I have a P4HT machine. I had never turned on SMP to use the
    > hyperthreading feature. When I turned it on I got exactly the problem
    > you talk about. When I went back to UMP it worked fine.

    Such was not the case for me. It still didn't work:
    CPU0
    0: 71543 IO-APIC-edge timer
    7: 0 IO-APIC-edge parport0
    8: 0 IO-APIC-edge rtc
    9: 0 IO-APIC-level acpi
    14: 13 IO-APIC-edge ide0
    169: 2104 IO-APIC-level megaraid
    177: 249 IO-APIC-level eth0
    193: 0 IO-APIC-level ohci_hcd:usb1, ohci_hcd:usb2
    201: 539 IO-APIC-level uhci_hcd:usb3
    209: 181556 IO-APIC-level uhci_hcd:usb4
    217: 2664 IO-APIC-level ehci_hcd:usb5
    225: 2 IO-APIC-level ohci1394
    NMI: 81
    LOC: 71028
    ERR: 0
    MIS: 0

    and I also got:

    Oct 10 18:50:36 hydra kernel: irq 209: nobody cared (try booting with
    the "irqpoll" option)
    Oct 10 18:50:36 hydra kernel:
    Oct 10 18:50:36 hydra kernel: Call
    Trace:<ffffffff8015b335>{__report_bad_irq+53}
    <ffffffff8015b5cb>{note_interrupt+571}
    Oct 10 18:50:36 hydra kernel: <ffffffff8015b0b0>{do_irqd+0}
    <ffffffff80149270>{keventd_create_kthread+0}
    Oct 10 18:50:36 hydra kernel: <ffffffff8015b23e>{do_irqd+398}
    <ffffffff801494ad>{kthread+205}
    Oct 10 18:50:36 hydra kernel: <ffffffff8010f6b2>{child_rip+8}
    <ffffffff80149270>{keventd_create_kthread+0}
    Oct 10 18:50:36 hydra kernel: <ffffffff801493e0>{kthread+0}
    <ffffffff8010f6aa>{child_rip+0}
    Oct 10 18:50:36 hydra kernel:
    Oct 10 18:50:36 hydra kernel: handlers:
    Oct 10 18:50:36 hydra kernel: [usb_hcd_irq+0/80] (usb_hcd_irq+0x0/0x50)

    so I tried booting with the noted flag, which got me:

    BUG: scheduling while atomic: kjournald/0x00010001/792
    caller is schedule+0xf8/0x130

    Call Trace: <IRQ> <ffffffff803716eb>{__schedule+155}
    <ffffffff803723b8>{schedule+248}
    <ffffffff8037321d>{___down_mutex+589}
    <ffffffff802e5eae>{megaraid_isr+62}
    <ffffffff8015b497>{note_interrupt+263}
    <ffffffff8015a4b7>{__do_IRQ+279}
    <ffffffff8011120f>{do_IRQ+47} <ffffffff8010f1a8>{ret_from_intr+0}
    <EOI> <ffffffff8026b688>{__delay+8}
    <ffffffff802e4d81>{megaraid_mbox_runpendq+209}
    <ffffffff802d6370>{scsi_done+0}
    <ffffffff802e60e2>{megaraid_queue_command+114}
    <ffffffff802d6874>{scsi_dispatch_cmd+548}
    <ffffffff802dd216>{scsi_request_fn+806}
    <ffffffff8017f320>{sync_buffer+0}
    <ffffffff802c9af8>{generic_unplug_device+24}
    <ffffffff8017f356>{sync_buffer+54}
    <ffffffff80372940>{__wait_on_bit+64}
    <ffffffff8017f320>{sync_buffer+0}
    <ffffffff803729fa>{out_of_line_wait_on_bit+122}
    <ffffffff80149840>{wake_bit_function+0}
    <ffffffff801d6c3b>{journal_commit_transaction+2235}
    <ffffffff8013cc19>{lock_timer_base+41}
    <ffffffff801d9ac9>{kjournald+233}
    <ffffffff801d9440>{commit_timeout+0}
    <ffffffff801496e0>{autoremove_wake_function+0}
    <ffffffff80136ccb>{do_exit+1051} <ffffffff8010f6b2>{child_rip+8}
    <ffffffff802cf1a0>{as_queue_empty+0} <ffffffff801d99e0>{kjournald+0}
    <ffffffff8010f6aa>{child_rip+0}

    I went back to the SMP kernel, but also appended "irqpoll", and got
    another BUG. Somehow the Windows machine I'm using to capture the
    serial console output didn't get the entirety of the appropriate line,
    but it was similar to:

    "BUG: scheduling with interrupts disabled: swapper 0x00010001"

    or similar.

    I should note that the other machines with the problem are also SMP: my
    home machine is a dual 1GHz Pentium III, and the Redhat machine is a
    hyper-threaded 3.4GHz Xeon.

    While I'm at it, I am getting insane clock corrections:

    Oct 10 19:10:40 hydra ntpd[4128]: adjusting local clock by -0.711763s
    Oct 10 19:13:18 hydra ntpd[4128]: adjusting local clock by -0.579583s
    Oct 10 19:16:30 hydra ntpd[4128]: adjusting local clock by -0.460506s

    Anyone know what that might be about?

    --
    Robert Crocombe
    rwcrocombe@raytheon.com

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