Date: Fri, 19 Apr 2013 14:39:54 -0700
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Sedat Dilek <sedat.dilek@gmail.com>,
        Davidlohr Bueso <davidlohr.bueso@hp.com>,
        Rik van Riel <riel@surriel.com>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        linux-next <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        the arch/x86 maintainers <x86@kernel.org>,
        Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
        Paul McKenney <paul.mckenney@linaro.org>,
        DRI <dri-devel@lists.freedesktop.org>,
        Dave Airlie <airlied@redhat.com>,
        Emmanuel Benisty <benisty.e@gmail.com>
Subject: Re: linux-next: Tree for Apr 18 [ call-trace: drm | x86 | smp | rcu
 related? ]
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On Fri, Apr 19, 2013 at 02:24:10PM -0700, Linus Torvalds wrote:
> On Fri, Apr 19, 2013 at 2:09 PM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
> >
> > I have applied all three patches and see still call-traces.
> > New are apparmor related messages.
> 
> Can you try the crazy rcu double-free debug hack?
> 
> See
> 
>     https://lkml.org/lkml/2013/3/30/113
> 
> and I'm re-attaching the ugly-ass crazy hack patch here too..
> 
>                     Linus

For whatever it is worth, CONFIG_DEBUG_OBJECTS_RCU_HEAD=y is intended to
detect RCU double-freeing.  But if it isn't helping for whatever reason,
please let me know!

							Thanx, Paul

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