linux-kernel - Re: process 'stuck' at exit.

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Message-ID: <20131210222750.GE5050@redhat.com>
Date:	Tue, 10 Dec 2013 17:27:51 -0500
From:	Dave Jones <davej@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Darren Hart <dvhart@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mel Gorman <mgorman@...e.de>
Subject: Re: process 'stuck' at exit.

On Tue, Dec 10, 2013 at 05:21:50PM -0500, Steven Rostedt wrote:
 
 > The trace-cmd show, shows you what's in the trace file, which was for the
 > "manual" version.
 > 
 > Sorry for the confusion.

 ah, thanks.

That shows..

version = 6
CPU 0 is empty
CPU 2 is empty
CPU 3 is empty
cpus=4
 trinity-child27-10818 [001] 89790.703544: kernel_stack:         <stack trace>
=> futex_requeue (ffffffff810df18a)
=> do_futex (ffffffff810e019e)
=> SyS_futex (ffffffff810e0de1)
=> tracesys (ffffffff81760be4)
 trinity-child27-10818 [001] 89790.703545: function:             get_user_pages_fast
 trinity-child27-10818 [001] 89790.703547: kernel_stack:         <stack trace>
=> futex_requeue (ffffffff810df18a)
=> do_futex (ffffffff810e019e)
=> SyS_futex (ffffffff810e0de1)
=> tracesys (ffffffff81760be4)
 trinity-child27-10818 [001] 89790.703547: function:             get_user_pages_fast
 trinity-child27-10818 [001] 89790.703549: kernel_stack:         <stack trace>
=> futex_requeue (ffffffff810df18a)
=> do_futex (ffffffff810e019e)
=> SyS_futex (ffffffff810e0de1)
=> tracesys (ffffffff81760be4)
 trinity-child27-10818 [001] 89790.703550: function:             get_user_pages_fast
 trinity-child27-10818 [001] 89790.703552: kernel_stack:         <stack trace>
=> futex_requeue (ffffffff810df18a)
=> do_futex (ffffffff810e019e)
=> SyS_futex (ffffffff810e0de1)
=> tracesys (ffffffff81760be4)


over and over and..

	Dave

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