Re: [Xen-devel] Re: system freeze when processor.ko is loaded during boot

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 29.03.11 at 00:48, Martin Wilck <mwilck@xxxxxxxx> wrote:
> Here is one more capture. It shows that (unfortunately) clocksource=pit
> doesn't help here, and that the xen watchdog hits if I configure it
> (just that the reboot doesn't work, and I can only see the output since
> I've been using the serial console).

The stack evaluates to 

logarithmic_accumulation
update_wall_time
do_timer(0x898d7)
tick_do_update_jiffies64
tick_sched_timer
__run_hrtimer
hrtimer_interrupt
timer_interrupt

(matches the previously sent one, just that there the tick count
passed to do_timer() is "only" 0x179ab.

So the kernel, afaict, is busy recovering from the time jump in Xen.

It is clearly also a bad sign that the NMI hit while Dom0 was
executing, as that guarantees interrupts aren't disabled (and
hence timer interrupts can occur, and timers would not be
prevented from running - presumably the time jump suppressed
the invocation of, among others, the NMI timer).

Jan


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