From: Johannes Berg <johannes@sipsolutions.net>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Dave Young <hidave.darkstar@gmail.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: 2.6.24-rc7 lockdep warning when poweroff
Date: Mon, 14 Jan 2008 11:51:36 +0100 [thread overview]
Message-ID: <1200307896.5887.42.camel@johannes.berg> (raw)
In-Reply-To: <1200307288.7415.11.camel@twins>
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> The warning that triggered (lockdep.c:700) means that one class (key)
> was used with more than one name.
Right.
> Looking at cleanup_workqueue_thread(), the lock_acquire() there works on
> wq->lockdep_map, and that is only initialized at one spot:
> __create_workqueue_key(), thus it stands to reason that that was
> mis-used.
Oh ok, yes, makes sense. Maybe something is generating a workqueue with
a name that's passed in but the key is statically from that place. I'll
try to find it.
johannes
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next prev parent reply other threads:[~2008-01-14 10:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-14 9:04 Dave Young
2008-01-14 9:24 ` Peter Zijlstra
2008-01-14 10:35 ` Johannes Berg
2008-01-14 10:41 ` Peter Zijlstra
2008-01-14 10:51 ` Johannes Berg [this message]
2008-01-15 0:31 ` Dave Young
2008-01-15 1:24 ` Dave Young
2008-01-15 8:42 ` Peter Zijlstra
2008-01-15 10:41 ` Johannes Berg
2008-01-15 12:21 ` Peter Zijlstra
2008-01-15 12:39 ` Johannes Berg
2008-01-15 12:47 ` Peter Zijlstra
2008-01-15 13:04 ` [PATCH for 2.6.24] fix workqueue creation API lockdep interaction Johannes Berg
2008-01-16 4:41 ` Dave Young
2008-01-16 8:11 ` 2.6.24-rc7 lockdep warning when poweroff Ingo Molnar
2008-01-15 23:54 ` Johannes Berg
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