linux-kernel - Re: 3.0.0-rc2-git4 -- INFO: possible circular locking dependency detected

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Date:	Sat, 11 Jun 2011 10:22:30 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Miles Lane <miles.lane@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: 3.0.0-rc2-git4 -- INFO: possible circular locking dependency
 detected

> [  330.762815] [ INFO: possible circular locking dependency detected ]
> [  330.762819] 3.0.0-rc2-git4 #9
> [  330.762822] -------------------------------------------------------
> [  330.762825] kworker/0:0/4 is trying to acquire lock:
> [  330.762828]  (&rdev->mtx){+.+.+.}, at: [<ffffffffa006f7e0>]
> cfg80211_netdev_notifier_call+0x275/0x4ff [cfg80211]
> [  330.762845]
> [  330.762846] but task is already holding lock:
> [  330.762848]  (&rdev->devlist_mtx){+.+.+.}, at: [<ffffffffa006fd5c>]
> cfg80211_rfkill_set_block+0x28/0x70 [cfg80211]
> [  330.762860]
> [  330.762861] which lock already depends on the new lock.

Yeah, Luca is supposed to be working on this.

johannes


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