linux-kernel - Re: [PATCH 1/4] lockdep, timer: Fix del_timer

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Date:	Fri, 4 Feb 2011 20:07:55 -0500
From:	Nick Bowler <nbowler@...iptictech.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>, Tejun Heo <tj@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>,
	Faisal Latif <faisal.latif@...el.com>,
	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Alessandro Rubini <rubini@...l.unipv.it>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	Mark Fasheh <mfasheh@...e.com>,
	Joel Becker <jlbec@...lplan.org>,
	"David S. Miller" <davem@...emloft.net>,
	"John W. Linville" <linville@...driver.com>,
	Johannes Berg <johannes@...solutions.net>,
	Yong Zhang <yong.zhang0@...il.com>
Subject: Re: [PATCH 1/4] lockdep, timer: Fix del_timer_sync() annotation

On 2011-02-03 16:35 +0100, Thomas Gleixner wrote:
> On Thu, 3 Feb 2011, Peter Zijlstra wrote:
> > Calling local_bh_enable() will want to actually start processing
> > softirqs, which isn't a good idea since this can get called with IRQs
> > disabled.
> > 
> > Cure this by using _local_bh_enable() which doesn't start processing
> > softirqs, and use raw_local_irq_save() to avoid any softirqs from
> > happending without letting lockdep think IRQs are in fact disabled.
> > 
> > Reported-by: Nick Bowler <nbowler@...iptictech.com>
> 
> Nick, can you please test ?

Yes, this patch seems to solve the issue.

Thanks,
-- 
Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
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