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Date: Fri, 1 Jun 2007 14:45:27 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
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To: Andrew Morton <akpm@linux-foundation.org>
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Subject: Re: [RFC] [PATCH] cpuset operations causes Badness at mm/slab.c:777
 warning
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On Fri, 1 Jun 2007, Andrew Morton wrote:

> Poisoning and redzoning could have caught that.

Redzoning would not have caught it. This was a kmalloc allocation and 
SLAB always gave them 32 bytes to play with. Only writes more than 32 
bytes behind would have been caught.

Poisoning is only applicable to unallocated objects and these were 
allocated.