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Date: Wed, 16 Apr 2008 03:14:35 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
       Christoph Lameter <clameter@sgi.com>, linux-kernel@vger.kernel.org,
       Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@suse.de>,
       Andrew Morton <akpm@linux-foundation.org>,
       "Rafael J. Wysocki" <rjw@sisk.pl>, Yinghai.Lu@sun.com, apw@shadowen.org,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
       Joe Perches <joe@perches.com>
Subject: Re: [patch] mm: sparsemem memory_present() memory corruption fix
Message-ID: <20080416011435.GA32147@elte.hu>
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* Ingo Molnar <mingo@elte.hu> wrote:

> but the exact incarnation depended on random details like configs, 
> which made this bug more prominent in v2.6.25-to-be.

i believe this was the reason why my many bisection attempts were 
unsuccessful: the bug pattern was not stable and seemingly working 
kernels had the memory corruption too. It was pure luck that v2.6.24 
"worked" and v2.6.25-rc9 broke visibly.

	Ingo