linux-kernel - Re: Kernel panic at boot with ondemand governor as default (2.6.24-rc2)

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Message-ID: <4737A09C.1030200@lifl.fr>
Date:	Mon, 12 Nov 2007 01:38:52 +0100
From:	Eric Piel <Eric.Piel@...l.fr>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	Thomas Renninger <trenn@...e.de>, linux-kernel@...r.kernel.org,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>,
	Dave Jones <davej@...hat.com>
Subject: Re: Kernel panic at boot with ondemand governor as default (2.6.24-rc2)

2007年11月11日 23:45, Arjan van de Ven wrote/a écrit:
> On Sun, 11 Nov 2007 20:10:23 +0100
> Eric Piel <Eric.Piel@...l.fr> wrote:
> 
>> Hello,
>>
>> I've tried kernel 2.6.24-rc2 and I have a problem with the new option 
>> for setting up the cpufreq ondemand governor as default: a kernel
>> panic happens early at boot time. If I boot first with performance
>> governor and later change to ondemand, everything is fine (as usual).
>>
>> This seems related to the delayed_workqueue. The kernel panic message 
>> finishes by:
>> EIP: [<c012aa60>] wq_per_cpu+0x0/0x10 SS:ESP 0068:c191be58
>> Kernel panic - not syncing: Attempted to kill init!
>>
>> A picture of the whole message is available here:
>> http://pieleric.free.fr/unorder/1162-ondemand-panic.jpg
>>
>> My computer is a x86 using speedstep-ich, and you can find the full 
>> .config leading to the panic attached.

> 
> has ondemand ever worked for you?
Yes, ondemand works perfectly fine on this computer. The panic happens 
only if selecting it as the _default_ governor (which has been 
introduced by commit 1c2562459faedc35927546cfa5273ec6c2884cce).

Eric


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