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    SubjectBUG during shutdown - bisected to commit e2912009
    From
    I'm getting a BUG with current kernels from
    kernel/time/clockevents.c:263 when halting the system - a restart
    behaves normally. I don't have a good camera handy at the moment to
    capture the call stack on screen, but the call sequence is:

    clockevents_notify
    hrtimer_cpu_notify
    notifier_call_chain
    raw_notifier_call_chain
    _cpu_down
    disable_nonboot_cpus
    kernel_power_off
    sys_reboot

    I bisected it down to commit e2912009: sched: Ensure set_task_cpu() is
    never called on blocked tasks. There were a few commits tested along
    the way where I got a freeze (with the power still on) instead of a
    BUG. Reverting that commit from the current kernel doesn't look
    trivial, but the commit immediately preceding this one does halt fine.

    Marc


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