Subject: Re: 2.6.20-git13 kernel BUG at
	/mnt/md0/devel/linux-git/kernel/time/tick-sched.c:168
From: Thomas Gleixner <tglx@linutronix.de>
Reply-To: tglx@linutronix.de
To: Alex Riesen <fork0@users.sourceforge.net>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
       Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>
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Date: Sat, 17 Feb 2007 19:24:55 +0100
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On Sat, 2007-02-17 at 17:46 +0100, Alex Riesen wrote:
> > Can you please apply the patch below, so we can at least see, which
> > softirq is pending. This should trigger independently of hrtimers and
> > dynticks. You can keep it compiled in and disable it at the kernel
> > commandline with "nohz=off" and / or "highres=off"
> 
> It did, only one time:
> 
> Idle: local softirq pending: 0020<6>USB Universal Host Controller Interface driver v3.0

0x20 is the TASKLET_SOFTIRQ. I have no idea yet, how this can happen.

Can you please check, if this happens when you add "nohz=off" to the
kernel command line.

	tglx


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