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Date: Wed, 18 Jul 2012 18:55:33 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: Darren Hart <dvhart@...ux.intel.com> Cc: Dave Jones <davej@...hat.com>, linux-kernel@...r.kernel.org Subject: Re: potential NULL dereference in futex_wait_requeue_pi() On Wed, Jul 18, 2012 at 08:41:38AM -0700, Darren Hart wrote: > > > 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 https://lkml.org/lkml/2012/7/13/328 > > 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? > This was a static checker warning. It was Dave who saw the oops from syscall fuzzing with trinity. regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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