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Date: Tue, 10 Dec 2013 19:55:50 -0500
From: Dave Jones <davej@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>, Oleg Nesterov <oleg@redhat.com>,
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        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, Mel Gorman <mgorman@suse.de>
Subject: Re: process 'stuck' at exit.
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On Tue, Dec 10, 2013 at 07:23:30PM -0500, Dave Jones wrote:
 
 > I was distracted by seeing all the other threads exiting, so I was only looking at
 > what this one had already done.
 
another thing that distracted me was that /proc/10818/stack was just showing that

[<ffffffffffffffff>] 0xffffffffffffffff

output.

For my own education, what causes that ?
How come it didn't show the same trace I saw when I sysrq-t'd ?

	Dave