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

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Message-ID: <52D6887E.6010702@linaro.org>
Date:	Wed, 15 Jan 2014 14:09:18 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	raistlin@...ux.it, juri.lelli@...il.com,
	Ingo Molnar <mingo@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] [ tip/sched/core ] System unresponsive after booting

On 01/15/2014 01:04 PM, Peter Zijlstra 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.
>
> Would you happen to have a .config for me to try?

Yes, sure.

http://pastebin.com/Hj4nEZHc


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