Re: WARNING at watchdog_overflow_callback in 3.0-rc7+

From: Thomas Gleixner
Date: Thu Jul 28 2011 - 14:50:45 EST


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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