Re: Kernel crash in icq_free_icq_rcu

From: Tejun Heo
Date: Tue Jan 17 2012 - 20:11:16 EST


On Wed, Jan 18, 2012 at 09:05:26AM +0800, Shaohua Li wrote:
> > Vivek is seeing the problem while switching elevators.  Are you too?
> > Or is it during normal operation?
> same here. I had some problems when I debug my ioscheduler, but
> eventually found even switching cfq and noop can trigger oops.

Hmmm... maybe quiescing isn't working as expected and kmem cache is
being destroyed with live icq's. I'll try to reproduce it.

Thanks.

--
tejun
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