linux-kernel - Re: WARNING at watchdog_overflow

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Date:	Thu, 28 Jul 2011 20:50:32 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Don Zickus <dzickus@...hat.com>
cc:	Ben Greear <greearb@...delatech.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: WARNING at watchdog_overflow_callback in 3.0-rc7+

On Thu, 28 Jul 2011, Don Zickus wrote:

> On Wed, Jul 13, 2011 at 10:19:43AM -0700, Ben Greear wrote:
> > This is on the same nfs testing machine I've been posting about.  This
> > has some additional nfs patches included, running tests to mount, do io, unmount
> > over and over again.  Seems that the NFS bugs might be finally fixed, but
> > system is still un-stable in general:
> 
> This looks like it is stuck spinning on a lock while trying to cancel an
> hrtimer.  Not sure under what conditions the hrtimer can't get this lock.
> 
> I cc'd Thomas, perhaps he might know.

http://www.gossamer-threads.com/lists/linux/kernel/1409228

Fix is on the way to mainline/stable

Thanks,

	tglx
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