netdev - Re: [Bugme-new] [Bug 8778] New: Ocotea board: kernel reports access of bad area during boot with DEBUG

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Message-ID: <20070723133450.3de91b33@schroedinger.engr.sgi.com>
Date:	Mon, 23 Jul 2007 13:34:50 -0700
From:	Christoph Lameter <clameter@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Eugene Surovegin <ebs@...home.net>, linux-mm@...ck.org,
	Josh Boyer <jwboyer@...ux.vnet.ibm.com>,
	bart.vanassche@...il.com, netdev@...r.kernel.org,
	"bugme-daemon@...nel-bugs.osdl.org" 
	<bugme-daemon@...zilla.kernel.org>, linuxppc-embedded@...abs.org
Subject: Re: [Bugme-new] [Bug 8778] New: Ocotea board: kernel reports access
 of bad area during boot with DEBUG_SLAB=y

On Wed, 18 Jul 2007 09:55:37 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> hm.  It should be the case that providing SLAB_HWCACHE_ALIGN at
> kmem_cache_create() time will override slab-debugging's offsetting
> of the returned addresses.


That is true for SLUB but not in SLAB. SLAB has always ignored
SLAB_HWCACHE_ALIGN when debugging is on because of the issues involved
in placing the redzone values etc.  Could be fun to fix.

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