Re: [idr/perf_init_event] BUG: unable to handle kernel NULL pointerdereference at (null)

From: Tejun Heo
Date: Fri Feb 22 2013 - 20:36:05 EST


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@xxxxxxxxxx>
> > 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
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