From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754842Ab0BTLUT (ORCPT ); Sat, 20 Feb 2010 06:20:19 -0500 Received: from he.sipsolutions.net ([78.46.109.217]:49519 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753198Ab0BTLUR (ORCPT ); Sat, 20 Feb 2010 06:20:17 -0500 Subject: Re: sysfs lockdep complaint From: Johannes Berg To: =?ISO-8859-1?Q?Am=E9rico?= Wang Cc: Kernel development list , "Eric W. Biederman" In-Reply-To: <2375c9f91002200126x22b262b3r8b9b58e3cee34077@mail.gmail.com> References: <1266485543.6539.4.camel@jlt3.sipsolutions.net> <2375c9f91002200126x22b262b3r8b9b58e3cee34077@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Date: Sat, 20 Feb 2010 12:20:14 +0100 Message-ID: <1266664814.11514.5.camel@jlt3.sipsolutions.net> Mime-Version: 1.0 X-Mailer: Evolution 2.29.3.2 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2010-02-20 at 17:26 +0800, Américo Wang wrote: > On Thu, Feb 18, 2010 at 5:32 PM, Johannes Berg > wrote: > > Get this when powernowd starts on my G5: > > > > [ 30.490674] ============================================= > > [ 30.490708] [ INFO: possible recursive locking detected ] > > [ 30.490727] 2.6.33-rc8-wl-64012-g6917413 #160 > > [ 30.490744] --------------------------------------------- > > [ 30.490763] powernowd/2577 is trying to acquire lock: > > [ 30.490782] (s_active){++++.+}, at: [] > .sysfs_addrm_finish+0x58/0xc0 > > [ 30.490831] > > [ 30.490833] but task is already holding lock: > > [ 30.490854] (s_active){++++.+}, at: [] > .sysfs_get_active_two+0x3c/0x84 > > [ 30.490895] > > This should be fixed by the patchset from Eric: > > http://lkml.org/lkml/2010/2/11/334 Oh wow, well ..... I get like a thousand of these now: BUG: key c0000002165eb478 not in .data! instead of the lockdep complaint above. johannes