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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.25-1
    Florian Schmidt wrote:
    > On Sun, 14 Nov 2004 15:15:51 +0100
    > Ingo Molnar <> wrote:
    >>>i just build and booted into 26-3 (w/o debugging stuff) and put a
    >>>little load on the system (find /'s plus kernel compile plus
    >>>rtc_wakeup -f 8192). Got this on the console:
    >>>`IRQ 8` [14] is being piggy. need_resched=0, cpu=0
    >>>and the machine locked. will build with debugging and try to
    >>hm, i tried and couldnt reproduce this, so i'm curious what your
    >>debugging build yields.
    > not mch sadly. I tried booting into it once more and had to wait quite a
    > while (around 30minutes) until the lock. I got this around 10 minutes before
    > the lock though:
    > Nov 15 00:09:23 mango kernel: bug in rtc_read(): called in state S_IDLE!

    Still don't think this has anything to do with the lock. This message is
    usually produced by reading the rtc with a program that is running at a
    higher priority than 'IRQ 8'. Did you chrt the 'IRQ 8' thread? Make sure
    the reader priority is at least 1 less than the handler.

    > The system locked up quitly again. no console dump. sys rq kept working (i
    > could sync, remount ro and reboot). Does sys rq offer diagnosis which would
    > be useful for you?

    Possibly 't' for trace?

    > flo

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