From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755225Ab0BTJ0S (ORCPT ); Sat, 20 Feb 2010 04:26:18 -0500 Received: from mail-qy0-f179.google.com ([209.85.221.179]:44462 "EHLO mail-qy0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753027Ab0BTJ0Q convert rfc822-to-8bit (ORCPT ); Sat, 20 Feb 2010 04:26:16 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=Q3rIbMMJKlt6/edbrh8UjQYRH/euxOrcCwA+cn7j3QNr9OoqnuN6+x5qqAeVRZ+C1n XpmZzi4GFXtCFZbZvIIPbOSg538NbaY7qEcHksdtI1JpcZuMV8b7Q035/d188lvL984Q TNz2C9X4IpEE7u8ADyM7uGcEeFeTOmBmv1IzQ= MIME-Version: 1.0 In-Reply-To: <1266485543.6539.4.camel@jlt3.sipsolutions.net> References: <1266485543.6539.4.camel@jlt3.sipsolutions.net> Date: Sat, 20 Feb 2010 17:26:15 +0800 Message-ID: <2375c9f91002200126x22b262b3r8b9b58e3cee34077@mail.gmail.com> Subject: Re: sysfs lockdep complaint From: =?UTF-8?Q?Am=C3=A9rico_Wang?= To: Johannes Berg Cc: Kernel development list Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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