linux-kernel - Re: Oops/Warning report for the week of September 10th, 2008

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Message-ID: <20080911045255.GD6863@suse.de>
Date:	Wed, 10 Sep 2008 21:52:55 -0700
From:	Greg KH <gregkh@...e.de>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Theodore Ts'o <tytso@....edu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Oops/Warning report for the week of September 10th, 2008

On Wed, Sep 10, 2008 at 12:16:48PM -0700, Arjan van de Ven wrote:
>
> Rank 2: sysfs_add_one (warning)
> 	Reported 215 times (3751 total reports)
> 	Duplicate sysfs registration; mostly in USB audio
> 	This warning was last seen in version 2.6.27-rc5, and first seen in 
> 2.6.24-rc6.
> 	More info: http://www.kerneloops.org/searchweek.php?search=sysfs_add_one

This one is going to be a bit tough to track over time as it is the low
level sysfs code complaining that a user of it is doing something wrong.
So you can get all sorts of different callers causing the same warning,
we just have to look at the backtrace to get a hint of who is causing
the problem.

Is there any way to break this one down further by caller so we can try
to narrow it down?  I thought you did that for other types of warnings
in the past (may_sleep(), etc.)

thanks,

greg k-h
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