lock up in 6.2 (procs massively stuck in Giant)

John Baldwin jhb at freebsd.org
Wed May 13 14:27:34 UTC 2009


On Wednesday 13 May 2009 2:40:33 am pluknet wrote:
> 2009/5/13 pluknet <pluknet at gmail.com>:
> > 2009/5/13 John Baldwin <jhb at freebsd.org>:
> >> On Tuesday 12 May 2009 4:59:19 pm pluknet wrote:
> >>> Hi.
> >>>
> >>> From just another box (not from the first two mentioned earlier)
> >>> with a similar locking issue. If it would make sense, since there are
> >>> possibly a bit different conditions.
> >>> clock proc here is on swi4, I hope it's a non-important difference.
> >>>
> >>>    18     0     0     0  LL     *Giant    0xd0a6b140 [swi4: clock sio]
> >>> db> bt 18
> >>
> >> Ok, this is a known issue in 6.x.  It is fixed in 6.4.
> >>
> 
> Looking at the face of kern_timeout.c I suspect that was fixed in r181012.

No, this particular issue is fixed by a change to sched_4bsd.c in r179975.

-- 
John Baldwin


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