From: Christoph Lameter <clameter@sgi.com>
To: Jens Osterkamp <Jens.Osterkamp@gmx.de>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>, linux-mm@kvack.org
Subject: Re: [BUG] in 2.6.25-rc3 with 64k page size and SLUB_DEBUG_ON
Date: Thu, 6 Mar 2008 14:20:15 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0803061418430.15083@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <200803062307.22436.Jens.Osterkamp@gmx.de>
On Thu, 6 Mar 2008, Jens Osterkamp wrote:
> > You mention slub_debug=- makes the problem go away but can you narrow it
> > down to a specific debug option described in Documentation/vm/slub.txt?
> > In particular, does disabling slab poisoning or red zoning make the
> > problem go away also?
>
> I tried with slub_debug= F,Z,P and U. Only with F the problem is not there.
Ahh.. That looks like an alignment problem. The other options all add
data to the object and thus misalign them if no alignment is
specified.
Seems that powerpc expect an alignment but does not specify it for some data.
You can restrict the debug for certain slabs only. Try some of the arch
specific slab caches first.
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next prev parent reply other threads:[~2008-03-06 22:20 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-06 13:47 [BUG] in 2.6.25-rc3 with 64k page size and SLUB_DEBUG_ON Jens Osterkamp
2008-03-06 19:55 ` Christoph Lameter
2008-03-06 21:07 ` Jens Osterkamp
2008-03-06 21:50 ` Christoph Lameter
2008-03-06 21:52 ` Jens Osterkamp
2008-03-06 21:56 ` Christoph Lameter
2008-03-06 22:00 ` Pekka Enberg
2008-03-06 22:04 ` Pekka Enberg
2008-03-06 22:07 ` Jens Osterkamp
2008-03-06 22:20 ` Christoph Lameter [this message]
2008-03-06 22:24 ` Pekka Enberg
2008-03-07 12:20 ` Jens Osterkamp
2008-03-07 12:40 ` Pekka J Enberg
2008-03-07 12:44 ` Pekka J Enberg
2008-03-07 22:18 ` Jens Osterkamp
2008-03-07 22:30 ` Jens Osterkamp
2008-03-07 22:59 ` Christoph Lameter
2008-03-12 15:19 ` Jens Osterkamp
2008-03-12 23:34 ` Christoph Lameter
2008-03-18 16:44 ` Jens Osterkamp
2008-03-18 17:45 ` Christoph Lameter
2008-03-18 17:51 ` Pekka Enberg
2008-03-06 22:25 ` Jens Osterkamp
2008-03-07 22:09 ` Jens Osterkamp
2008-03-06 22:21 ` Jens Osterkamp
2008-03-06 21:27 ` Pekka Enberg
2008-03-06 21:45 ` Ingo Molnar
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