linux-kernel - Re: lockdep: strange %s#5 lock name

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Message-ID: <20140211152741.GA24490@htj.dyndns.org>
Date:	Tue, 11 Feb 2014 10:27:41 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Tommi Rantala <tt.rantala@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, trinity@...r.kernel.org
Subject: Re: lockdep: strange %s#5 lock name

On Tue, Feb 11, 2014 at 12:00:36PM +0100, Peter Zijlstra wrote:
> > Looks good to me.  Can you please post the patch with SOB?
> 
> ---
> Subject: workqueue: Fix workqueue lockdep name
> 
> Tommi noticed a 'funny' lock class name: "%s#5" from a lock acquired in
> process_one_work(). It turns out that commit b196be89cdc14 forgot to
> change the lockdep_init_map() when it changed the @lock_name argument
> from a string to a format.
> 
> Fixes: b196be89cdc14 ("workqueue: make alloc_workqueue() take printf fmt and args for name")
> Reported-by: Tommi Rantala <tt.rantala@...il.com>
> Signed-off-by: Peter Zijlstra <peterz@...radead.org>

Applied to wq/for-3.14-fixes.

Thanks!

-- 
tejun
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