Date: Sat, 26 Nov 2005 18:52:21 -0800
From: thockin@hockin.org
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: What are the general causes of frozen system?
Message-ID: <20051127025221.GA30646@hockin.org>
References: <43891D97.4000404@lwfinger.net>
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> What should I consider as a cause of the freeze? I have reviewed the 
> code and do not find any obvious out-of-bounds memory references. I have 
> tried various 'printk' statements, but none of them in the bottom-half 
> interrupt routine make it to the logs. Are there any tricks that I 
> should try?

Look for lock-related deadlocks.  Try turning on the nmi watchdog
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