Re: 2.6.24-rc7 lockdep warning when poweroff

From: Johannes Berg
Date: Mon Jan 14 2008 - 05:52:17 EST



> 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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