linux-kernel - Re: [BUG] [ tip/sched/core ] System unresponsive after booting

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Message-ID: <20140115122452.GA18311@gmail.com>
Date:	Wed, 15 Jan 2014 13:24:52 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Daniel Lezcano <daniel.lezcano@...aro.org>, raistlin@...ux.it,
	juri.lelli@...il.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] [ tip/sched/core ] System unresponsive after booting


* Peter Zijlstra <peterz@...radead.org> wrote:

> On Wed, Jan 15, 2014 at 09:27:34AM +0100, Daniel Lezcano wrote:
> > 
> > Hi all,
> > 
> > I use the tip/sched/core branch.
> > 
> > After git pulling yesterday, my host is unresponsive after booting the OS.
> > 
> >  * It boots normally
> >  * It sends info to the console
> >  * The graphics does not work
> >  * The terminals show the prompt, I can enter the username but after
> > pressing enter, it does not give the password prompt
> >  * sysrq works more or less, I can't get the process stack but it receives
> > the command
> > 
> > It is like no new process can be created.
> > 
> > I have a dual Xeon processor E5325 (2 x 4 cores).
> > 
> > After git bisecting, the following patch seems to introduce the bug.
> > 
> > commit d50dde5a10f305253cbc3855307f608f8a3c5f73
> 
> OK, so my headless WSM-EP boots just fine. Obviously it cannot confirm
> if graphics works, but I can ssh in and work on it without bother.
> 
> I can even log in on the serial console without problems.
> 
> I tried both tip/master and tip/sched/core.

I too booted various sytems and have yet to notice similar oddity.

Thanks,

	Ingo
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