linux-kernel - Re: [Bug #15202] lockdep warning during elevator

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Message-ID: <alpine.LSU.2.00.1002250051380.4394@sister.anvils>
Date:	Thu, 25 Feb 2010 01:03:14 +0000 (GMT)
From:	Hugh Dickins <hugh.dickins@...cali.co.uk>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Americo Wang <xiyou.wangcong@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [Bug #15202] lockdep warning during elevator_switch

On Mon, 22 Feb 2010, Américo Wang wrote:
> On Mon, Feb 22, 2010 at 5:30 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > This message has been generated automatically as a part of a summary report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let the tracking team
> > know (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15202
> > Subject         : lockdep warning during elevator_switch
> > Submitter       : Hugh Dickins <hugh.dickins@...cali.co.uk>
> > Date            : 2010-01-31 23:55 (22 days old)
> > References      : http://marc.info/?l=linux-kernel&m=126498212613051&w=4
> >
> 
> This should be fixed by:
> http://lkml.org/lkml/2010/2/11/329

This regression does still need to be listed for 2.6.33-rc8-git.

Americo is right that the warning goes away if I apply those patches from Eric,
but they look like more than we'd be adding into 2.6.33 at this stage ...
and bootup of latest git plus those patches gave me 71 messages of the form
BUG: key fxxxxxxx not in .data!

Hugh