[zfs][hardware] Reproducible kernel panic in 8.0-STABLE
avg at icyb.net.ua
Tue Feb 2 15:50:55 UTC 2010
on 02/02/2010 16:03 Stephane LAPIE said the following:
> Andriy Gapon wrote:
>> on 02/02/2010 15:32 Stephane LAPIE said the following:
>>> I have a case of kernel panic that can be consistently reproduced, and
>>> which I guess is related to the hardware I'm using (Marvell controllers,
>>> check my pciconf -lv output below).
>>> The kernel panic message is always, consistently, the following :
>>> Sleeping thread (tid 100021, pid 0) owns a non-sleepable lock
>> I probably won't be able to help you, but to kickstart debugging could
>> you please
>> run 'procstat -t 0' and determine what kernel thread has tid 100021 on
>> your system?
> Thanks for the tip. I will keep that one in mind, as I was wondering how
> you looked up individual threads.
> # procstat -t 0 | grep 100021
> 0 100021 kernel thread taskq 1 92 sleep -
> Is that the "kernel task queue" handler ?
This taskqueue "taskqueue_thread" which is used to schedule tasks in many places.
I would guess that one of those tasks leaked a lock.
Probably it's best to configure system for crashdumps to a reliable storage and
then try to examine a dump with kgdb to see what lock we have here.
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