linux-kernel - Re: [workqueue] BUG: unable to handle kernel paging request at ffff880000798f60

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Message-ID: <20140219190555.GR10134@htj.dyndns.org>
Date:	Wed, 19 Feb 2014 14:05:55 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Fengguang Wu <fengguang.wu@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [workqueue] BUG: unable to handle kernel paging request at
 ffff880000798f60

On Wed, Feb 19, 2014 at 01:46:14PM +0100, Peter Zijlstra wrote:
> On Wed, Feb 19, 2014 at 08:41:22PM +0800, Fengguang Wu wrote:
> > Greetings,
> > 
> > I got the below dmesg and the first bad commit is
> > 
> > git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
> > 
> > commit 84604340d034a074036e86e85c4055a1c7ea5529
> > Author:     Peter Zijlstra <peterz@...radead.org>
> > AuthorDate: Tue Feb 11 12:00:36 2014 +0100
> > Commit:     Tejun Heo <tj@...nel.org>
> > CommitDate: Tue Feb 11 10:25:17 2014 -0500
> > 
> >     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>
> >     Signed-off-by: Tejun Heo <tj@...nel.org>
> >     Cc: stable@...r.kernel.org
> 
> I seem to remember tj already having reverted this patch.

Hmmm... right, this shouldn't be in the tree anymore.  Let me check.
Yeap, it's not there anymore.

Thanks.

-- 
tejun
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