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    SubjectRe: 2.6.32.21 - uptime related crashes?
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    On Tue, 2011-07-12 at 10:18 +0900, MINOURA Makoto / 箕浦 真 wrote:
    > We're experiencing similar but slightly different
    > problems. Some KVM hosts crash after 210-220 uptime.
    > Some of them hits divide-by-zero, but one of them shows:
    >
    > [671528.8780080] BUG: soft lockup - CPU#4 stuck for 61s! [kvm:11131]
    >
    > (sorry we have no full crash message including the backtrace)
    >
    > The host kernel is 2.6.32.11-based (ubuntu 2.6.32-22-server,
    > 2.6.32-22.36).
    >
    > I'm not sure but probably the task scheduler is confusing by
    > the sched_clock overflow?

    I'm working on a debug patch that will hopefully trip sched_clock
    overflows very early to see if we can't shake these issues out.

    thanks
    -john


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