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Date: Tue, 14 Jun 2011 05:18:46 -0700 (PDT)
From: Hugh Dickins <hughd@google.com>
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To: Pekka Enberg <penberg@kernel.org>
cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        linux-mm <linux-mm@kvack.org>, Christoph Lameter <cl@linux.com>,
        "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] slub: fix kernel BUG at mm/slub.c:1950!
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On Tue, 14 Jun 2011, Benjamin Herrenschmidt wrote:
> On Mon, 2011-06-13 at 14:00 -0700, Hugh Dickins wrote:
> > On Mon, Jun 13, 2011 at 1:34 PM, Pekka Enberg <penberg@kernel.org> wrote:
> > > On Mon, Jun 13, 2011 at 10:29 PM, Christoph Lameter <cl@linux.com> wrote:
> > >> On Mon, 13 Jun 2011, Pekka Enberg wrote:
> > >>
> > >>> > Hmmm.. The allocpercpu in alloc_kmem_cache_cpus should take care of the
> > >>> > alignment. Uhh.. I see that a patch that removes the #ifdef CMPXCHG_LOCAL
> > >>> > was not applied? Pekka?
> > >>>
> > >>> This patch?
> > >>>
> > >>> http://git.kernel.org/?p=linux/kernel/git/penberg/slab-2.6.git;a=commitdiff;h=d4d84fef6d0366b585b7de13527a0faeca84d9ce
> > >>>
> > >>> It's queued and will be sent to Linus soon.
> > >>
> > >> Ok it will also fix Hugh's problem then.
> > >
> > > It's in Linus' tree now. Hugh, can you please confirm it fixes your machine too?
> > 
> > I expect it to, thanks: I'll confirm tonight.
> 
> From report to resolution before I got to read the thread, that's how I
> like them ! Thanks guys :-)

Confirmed: fixed in 3.0-rc3 - thank you!

Hugh