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Date: Sat, 23 Feb 2013 09:41:57 +0800
From: Fengguang Wu <fengguang.wu@intel.com>
To: Tejun Heo <tj@kernel.org>
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 05:35:54PM -0800, Tejun Heo wrote:
> 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".

Great, thanks for the info!

Fengguang