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Date:      Tue, 6 Apr 2010 23:00:56 +0200
From:      Giovanni Trematerra <giovanni.trematerra@gmail.com>
To:        Paul Halliday <paul.halliday@gmail.com>
Cc:        hackers@freebsd.org
Subject:   Re: Panic: sleeping thread
Message-ID:  <q2n4e6cba831004061400wbd37318fgc4ac6c872d251a49@mail.gmail.com>
In-Reply-To: <u2q2dab70a31004061217y79320df0ia48e8c2492269836@mail.gmail.com>
References:  <u2q2dab70a31004061217y79320df0ia48e8c2492269836@mail.gmail.com>

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On Tue, Apr 6, 2010 at 9:17 PM, Paul Halliday <paul.halliday@gmail.com> wro=
te:
> ---------- Forwarded message ----------
> From: Paul Halliday <paul.halliday@gmail.com>
> Date: Thu, Apr 1, 2010 at 8:38 AM
> Subject: Re: panic: sleeping thread
> To: questions@freebsd.org
>
>
> On Mon, Mar 22, 2010 at 9:28 AM, Paul Halliday <paul.halliday@gmail.com> =
wrote:
>> I have a couple VM's that randomly halt with this error:
>>
>> Sleeping thread (tid 10018, pid 1058) owns a non-sleepable lock
>> panic: sleeping thread
>> cpuid =3D 0
>> Uptime 11h14m31s
>> Cannot dump. Device not defined or unavailable.
>>
>> FreeBSD 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08 UTC
>> 2009 =A0 =A0 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
>> amd64
>>
>> These systems run nightly Nessus scans and these halts are very
>> sporadic; I can go a week w/o seeing one.
>>
>> What should I do to start to troubleshoot this?

You might want to obtain a kernel dump.
Take a look at
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html

--
Gianni



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