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Date: Tue, 22 Nov 2011 10:41:02 -0600 (CST)
From: Christoph Lameter <cl@linux.com>
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To: Eric Dumazet <eric.dumazet@gmail.com>
cc: Markus Trippelsdorf <markus@trippelsdorf.de>,
        Christian Kujau <lists@nerdbynature.de>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        "Alex,Shi" <alex.shi@intel.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        Tejun Heo <tj@kernel.org>
Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413
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On Tue, 22 Nov 2011, Christoph Lameter wrote:

> It may be easier to simply disable interrupts early in __slab_free
> if debugging is on. Doesnt look nice right now. Draft patch (not tested
> yet):

Well thats not enough. We have to take the slab_lock to stop validate_slab
from checking up on things.