From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Abel Subject: Re: 3.14: WARNING: sysfs group ffffffff81c50ca0 not found for kobject 'target5:0:0' Date: Tue, 27 May 2014 02:21:44 +0200 Message-ID: <5383DA98.5010300@techfak.uni-bielefeld.de> References: <20140516171842.GA4610@aepfle.de> Reply-To: rabel@techfak.uni-bielefeld.de Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:51145 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751472AbaE0AVq (ORCPT ); Mon, 26 May 2014 20:21:46 -0400 In-Reply-To: <20140516171842.GA4610@aepfle.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Hi Olaf, On 16.05.2014 19:18, Olaf Hering wrote: > I did unplug an USB stick by accident with 3.14.4, the result is this > warning: > > > [94414.233882] usb 1-3: USB disconnect, device number 4 > [94414.245377] scsi 5:0:0:0: rejecting I/O to offline device > [94414.245383] scsi 5:0:0:0: killing request > [94414.370354] FAT-fs (sdc1): unable to read boot sector to mark fs as > dirty > [94414.370393] ------------[ cut here ]------------ > [94414.370400] WARNING: CPU: 2 PID: 3619 at fs/sysfs/group.c:216 > sysfs_remove_group+0xa1/0xb0() > [94414.370403] sysfs group ffffffff81c50ca0 not found for kobject > 'target5:0:0' This [1] might fix the problem you encountered. I reckon one of your drivers exposes a binary attribute file in a named attribute group, which it tries to remove when being unloaded. However, the path it looks for this attribute file is likely wrong. [1] http://comments.gmane.org/gmane.linux.kernel/1684070