Re: potential NULL dereference in futex_wait_requeue_pi()

From: Darren Hart
Date: Wed Jul 18 2012 - 11:43:10 EST

On 07/18/2012 08:31 AM, Dave Jones wrote:
> On Wed, Jul 18, 2012 at 05:25:14PM +0300, Dan Carpenter wrote:
> > Hi Darren,
> >
> > The patch 52400ba94675: "futex: add requeue_pi functionality" from
> > Apr 3, 2009, leads to the following warning:
> > kernel/futex.c:2373 futex_wait_requeue_pi()
> > error: potential NULL dereference 'pi_mutex'.
> This sounds like the oops I saw that I reported at

I'm looking into the report Dave sent today (delayed from piles of
urgent issues after returning from vacation, my apologies).

Dan, under which workload are you seeing this?

Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel

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