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Date: Fri, 22 Feb 2013 17:35:54 -0800
From: Tejun Heo <tj@kernel.org>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>, linux-kernel@vger.kernel.org
Subject: Re: [idr/perf_init_event] BUG: unable to handle kernel NULL pointer
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On Fri, Feb 22, 2013 at 05:34:48PM -0800, Tejun Heo wrote:
> Hello,
> 
> On Sat, Feb 23, 2013 at 09:30:11AM +0800, Fengguang Wu wrote:
> > Greetings,
> > 
> > I got the below dmesg and the first bad commit is
> > 
> > commit f5947173c082a04a9804bb42a91a0f5df5ee0527
> > Author: Tejun Heo <tj@kernel.org>
> > Date:   Wed Feb 20 02:05:52 2013 +0000
> > 
> >     idr: implement lookup hint
> 
> Andy Shevchenko already posted fix two days ago.  Let me check whether
> that went in yet.

Yeah, already in -mm.  It's titled "idr: always do slow path when hint
is uninitialized".

Thanks

-- 
tejun