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Date: Tue, 20 Jun 2006 01:52:59 -0700
From: Andrew Morton <akpm@osdl.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: ccb@acm.org, linux-kernel@vger.kernel.org
Subject: Re: [patch] fix spinlock-debug looping
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On Tue, 20 Jun 2006 10:40:01 +0200
Ingo Molnar <mingo@elte.hu> wrote:

> i obviously agree that any such crash is a serious problem, but is it 
> caused by the spinlock-debugging code?

Judging from Dave Olson <olson@unixfolk.com>'s report: no.  He's getting
hit by NMI watchdog expiry on write_lock(tree_lock) in a !CONFIG_DEBUG_SPINLOCK
kernel.