From: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
To: "Christopher S. Aker" <caker@theshore.net>
Cc: xen-devel <xen-devel@lists.xensource.com>
Subject: Re: BUG: soft lockup detected on CPU#0!
Date: Wed, 5 Apr 2006 11:16:40 +0100 [thread overview]
Message-ID: <19373d679e65ffe279bbb2bb4fd94700@cl.cam.ac.uk> (raw)
In-Reply-To: <44332DC7.3040707@theshore.net>
On 5 Apr 2006, at 03:39, Christopher S. Aker wrote:
> These are happening every few minutes, for four domains, and rising.
> Machine is under somewhat high disk load (lots of scp processes
> copying large file systems, cfq disk sched).
>
> xen_changeset: Sun Mar 26 11:50:39 2006 +0100 9441:30ae67d6e5f0
>
> Those domain have now zombified and are unkillable. I'll grab the
> latest updates and reboot the box.
Since it looks like a problem with the blkback kernel thread, it's
worth doing:
echo 1 >/sys/module/blkback/parameters/debug_lvl
That may get some kernel tracing (at level KERN_DEBUG) from that thread
and we can see if it's got into a bad looping state.
-- Keir
next prev parent reply other threads:[~2006-04-05 10:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-05 2:39 BUG: soft lockup detected on CPU#0! Christopher S. Aker
2006-04-05 2:45 ` Itamar Reis Peixoto
2006-04-05 10:16 ` Keir Fraser [this message]
2006-04-05 18:32 ` Christopher S. Aker
2006-04-06 6:56 ` Keir Fraser
2006-04-06 9:23 ` Keir Fraser
-- strict thread matches above, loose matches on Subject: below --
2007-09-10 2:14 Abhinav Srivastava
2010-08-02 22:54 Luke S Crawford
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