From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753805AbaCaJvs (ORCPT ); Mon, 31 Mar 2014 05:51:48 -0400 Received: from smtp-out-220.synserver.de ([212.40.185.220]:1050 "EHLO smtp-out-024.synserver.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752770AbaCaJvr (ORCPT ); Mon, 31 Mar 2014 05:51:47 -0400 X-SynServer-TrustedSrc: 1 X-SynServer-AuthUser: lars@metafoo.de X-SynServer-PPID: 22912 Message-ID: <53393AE4.505@metafoo.de> Date: Mon, 31 Mar 2014 11:52:36 +0200 From: Lars-Peter Clausen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20131103 Icedove/17.0.10 MIME-Version: 1.0 To: Alessandro Zummo CC: Sasha Levin , Tejun Heo , Greg KH , rtc-linux@googlegroups.com, LKML Subject: Re: kernfs/rtc: circular dependency between kernfs and ops_lock References: <5308E3AE.3040405@oracle.com> <20140222205217.GC16272@mtj.dyndns.org> <20140224120427.6394d5dd@linux.lan.towertech.it> <5331FA9E.20506@oracle.com> <20140325233936.655a798e@linux.lan.towertech.it> <53321D04.2040102@oracle.com> <5337653D.6020002@oracle.com> <53384080.9020502@oracle.com> <20140331114627.5e1a4609@linux.lan.towertech.it> In-Reply-To: <20140331114627.5e1a4609@linux.lan.towertech.it> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/31/2014 11:46 AM, Alessandro Zummo wrote: > On Sun, 30 Mar 2014 12:04:16 -0400 > Sasha Levin wrote: > >>> Look good, thanks! >> >> Or not... >> >> Hit it again during overnight fuzzing: >> > > I think this is a different bug, please try this. It's the same bug, device_unregister(&rtc->dev) will try to unregister all sysfs files attached to the device and that function is still called with the rtc mutex held. - Lars