From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965505AbdKGQfr (ORCPT ); Tue, 7 Nov 2017 11:35:47 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:56566 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965207AbdKGQfp (ORCPT ); Tue, 7 Nov 2017 11:35:45 -0500 Date: Tue, 7 Nov 2017 17:35:56 +0100 From: Greg KH To: syzbot Cc: felipe.balbi@linux.intel.com, krinkin.m.u@gmail.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com, tiwai@suse.de, vskrishn@codeaurora.org Subject: Re: WARNING in usb_submit_urb Message-ID: <20171107163556.GA13964@kroah.com> References: <94eb2c1fae04f3526c055d66d147@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <94eb2c1fae04f3526c055d66d147@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 Tue, Nov 07, 2017 at 08:11:13AM -0800, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 36ef71cae353f88fd6e095e2aaa3e5953af1685d > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is attached > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > for information about syzkaller reproducers This is not a crash, you are doing a panic-on-warning, and you send invalid data to the kernel and it warned about it properly and kept on working :) Perhaps maybe not a full WARN_ON() is to be done here? thanks, greg k-h