7.2-release/amd64: panic, spin lock held too long

[NAKAJI Hiroyuki]

>>>>> In <3bbf2fe10907221748j7f317ce0yc13bc5d01b4936e at mail.gmail.com> 
>>>>>	Attilio Rao <attilio at freebsd.org> wrote:
> 2009/7/23 NAKAJI Hiroyuki <nakaji at jp.freebsd.org>:
> >>>>>> In <4A667469.1080805 at gmail.com>
> >>>>>>   "C. C. Tang" <hiyorin at gmail.com> wrote:
> >> > Could that one (on i386) be related?
> >> > http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/134584
> >> >
> >
> >> I have no idea about it but I can tell the difference...
> >> My machine panic randomly rather than on shutdown and I remembered
> >> that it failed to write core dump. It also failed to reboot
> >> automatically..
> >
> > I also have trouble like yours.
> > http://lists.freebsd.org/pipermail/freebsd-stable/2009-June/050526.html
> >
> > I've heard from Attilio Rao that he had found the problem and is working
> > on it.

> Your problem should be linked to a well known deadlock in the VM. kib@
> and jeff@ were alredy working on a patch for that so I just passed
> them the ball.

Oops. Thanks for correction. I'm ready to test the patch.
-- 
NAKAJI Hiroyuki