linux-kernel - Re: [reboot] WARNING: CPU: 0 PID: 112 at kernel/events/core.c:5655 perf_swevent

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Message-ID: <20140310125319.GE26334@krava.redhat.com>
Date:	Mon, 10 Mar 2014 13:53:19 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [reboot] WARNING: CPU: 0 PID: 112 at kernel/events/core.c:5655
 perf_swevent_add()

On Sat, Mar 08, 2014 at 02:51:53PM +0800, Fengguang Wu wrote:
> 
> Hi all,
> 
> This is a very old WARNING, too old to be bisectable. The below 3 different
> back traces show that it's always triggered by trinity at system reboot time.
> Any ideas to quiet it? Thank you!

hi,
is there cpu hotplug involved? like writing to:
  /sys/devices/system/cpu/cpu*/online

thanks,
jirka
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