Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751601AbdFGOnS (ORCPT ); Wed, 7 Jun 2017 10:43:18 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:47914 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751566AbdFGOnQ (ORCPT ); Wed, 7 Jun 2017 10:43:16 -0400 Date: Wed, 7 Jun 2017 10:43:14 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Andrey Konovalov cc: Felipe Balbi , Greg Kroah-Hartman , Peter Chen , Krzysztof Opasiak , Colin Ian King , =?UTF-8?Q?Felix_H=C3=A4dicke?= , Roger Quadros , USB list , LKML , Dmitry Vyukov , Kostya Serebryany , syzkaller Subject: Re: usb/gadget: another GPF in usb_gadget_unregister_driver In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 610 Lines: 20 On Wed, 7 Jun 2017, Andrey Konovalov wrote: > Hi, > > I've got the following error report while fuzzing the kernel with syzkaller. > > On commit b29794ec95c6856b316c2295904208bf11ffddd9 (4.12-rc4+). > > This looks quite similar to > https://groups.google.com/forum/#!topic/syzkaller/HDawLBeeORI It does look very similar, but that problem was supposed to have been fixed by commit 7b0173811260 ("usb: gadget: udc: core: fix return code of usb_gadget_probe_driver()"). > I'm able to reproduce this, so I can collect some debug traces if needed. Can you provide an strace or the equivalent? Alan Stern