linux-kernel - Re: 3.12.9-rt13: BUG: soft lockup

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Message-ID: <20140307131555.GD8637@linutronix.de>
Date:	Fri, 7 Mar 2014 14:15:55 +0100
From:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	John Kacur <jkacur@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 3.12.9-rt13: BUG: soft lockup

* Thomas Gleixner | 2014-02-19 10:50:29 [+0100]:

>On Fri, 14 Feb 2014, Fernando Lopez-Lezcano wrote:
>> I could try to boot one of the machines into 3.12.xrtyy, replicate the
>> conditions and wait. What should I look for if I can catch this in the act?
>
>dmesg and sysrq-t output would be a good start I guess.

Yeah. Is it possible to use a serial console? It might happen that the
kernel throws something out before it dies but it does not manage to
write it to disk anymore.

>Thanks,
>
>	tglx

Sebastian
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