netdev - Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

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Message-ID: <alpine.DEB.2.00.1111221040300.28197@router.home>
Date:	Tue, 22 Nov 2011 10:41:02 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
cc:	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Christian Kujau <lists@...dbynature.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	"Alex,Shi" <alex.shi@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

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.

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