linux-kernel - Re: microcode driver newly spews warnings

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Message-ID: <49E7BD64.7060507@garzik.org>
Date:	Thu, 16 Apr 2009 19:21:08 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	Peter Oruba <peter.oruba@....com>, amd64-microcode@...64.org,
	Andreas Herrmann <andreas.herrmann3@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: microcode driver newly spews warnings

Ingo Molnar wrote:
> * Dmitry Adamushko <dmitry.adamushko@...il.com> wrote:
> 
>> 2009/4/15 Jeff Garzik <jeff@...zik.org>:
>>> Ingo Molnar wrote:
>>>> (added Cc:s)
>>>>
>>>> * Jeff Garzik <jeff@...zik.org> wrote:
>>>>
>>>>> Jeff Garzik wrote:
>>>>>> Kernel: 2.6.30-rc1-00306-g8371f87
>>>>>> Hardware: ICH10 x86-64
>>>>>>
>>>>>> This is a regression from 2.6.29.  Microcode spews the following WARNING
>>>>>> multiple times during boot:
>>>>>>
>>>>>>> ------------[ cut here ]------------
>>>>>>> WARNING: at fs/sysfs/group.c:138 sysfs_remove_group+0xeb/0xf0()
>>>>>>> Hardware name:         sysfs group ffffffffa0209700 not found for
>>>>>>>  kobject 'cpu0'
>>>
>>> Update:  Regression occurs in 2.6.30-rc2.
>>>
>>> I've now reproduced this on ICH9/Core2 as well as ICH10/Nahelem.
>> Hi,
>>
>>
>> the following patch should eliminate the problem (and revert to 
>> the old behavior that was altered by Rusty's patch).
> 
> Jeff, did this do the trick for you?

Yes -- but I worry about keeping sysfs files around too long?

	Jeff



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