From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752292AbdJ0Inb (ORCPT ); Fri, 27 Oct 2017 04:43:31 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:51236 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752227AbdJ0In2 (ORCPT ); Fri, 27 Oct 2017 04:43:28 -0400 Date: Fri, 27 Oct 2017 10:43:37 +0200 From: Greg KH To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: WARNING in sysfs_remove_group Message-ID: <20171027084337.GA25695@kroah.com> References: <001a113ed2fa7bedfe055c8316a5@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <001a113ed2fa7bedfe055c8316a5@google.com> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 27, 2017 at 01:29:31AM -0700, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 4ed590271a65b0fbe3eb1cf828ad5af16603c8ce > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > > > > > sysfs group 'loop' not found for kobject 'loop1' > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 21947 at fs/sysfs/group.c:237 > sysfs_remove_group+0x156/0x1a0 fs/sysfs/group.c:235 > Kernel panic - not syncing: panic_on_warn set ... It's a warning that someone did something wrong with their code, any hint as to how you are triggering this? thanks, greg k-h