From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
Subject: Re: [Bug #13112] Oops in drain_array
Date: Mon, 27 Apr 2009 13:39:06 -0400 (EDT)
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To: Bart <mmx-G/jkD+u3s4s@public.gmane.org>
Cc: Pekka Enberg <penberg-bbCR+/B0CizivPeTLB3BmA@public.gmane.org>, David Rientjes <rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Kernel Testers List <kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>

On Mon, 27 Apr 2009, Bart wrote:

> Apr 27 16:57:30 fs kernel: [   96.446708] slab error in verify_redzone_free():
> cache `size-128': memory outside object was overwritten

Allright so a write after or before a 128 byte kmalloc object. Can
you switch to the SLUB allocator so that we can get memory dumps of
the corruption which will help to diagnose this further?