From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFB96C433DF for ; Wed, 3 Jun 2020 06:12:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0A5A207ED for ; Wed, 3 Jun 2020 06:12:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591164775; bh=UvifAKAvNqqo8Y1bWJVOub1QaT730ONKJ5d4HCpPzWg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=IMEDYMlLq9saDi7aG1u0NFhr1uImND7YxyQL+wI37whs/n/smgDOz4ckFXZgU0OPp 2E39N3KShcAP3CZ2l/CCkveqH1TeG9LactwXkab5owDeozpyzh4atc1TskRcJyS2Sh /jxbsSreP7wS2js9dwdwdukCYco5pxeUGQwTGYaM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725922AbgFCGMy (ORCPT ); Wed, 3 Jun 2020 02:12:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:58398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725855AbgFCGMy (ORCPT ); Wed, 3 Jun 2020 02:12:54 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4FDAC2068D; Wed, 3 Jun 2020 06:12:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591164773; bh=UvifAKAvNqqo8Y1bWJVOub1QaT730ONKJ5d4HCpPzWg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=niqYV5foJ4O18yth7wIZGob3Z4fCgyhekmMeGNCuiP4HKNDShHYnFgFINh4+nVllZ Om60cOIOC3OO05cK6RViN/v0cQW5dnErsI5Tam1tw/OEAf2b6OY72kZpoGXX0f5hkS xZlrPr7ocohMnia+gWi3ztyirsKRkb6gnwjvtoCk= Date: Wed, 3 Jun 2020 08:12:51 +0200 From: Greg KH To: syzbot Cc: andreyknvl@google.com, balbi@kernel.org, ingrassia@epigenesys.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: WARNING in snd_usbmidi_submit_urb/usb_submit_urb Message-ID: <20200603061251.GA531505@kroah.com> References: <000000000000bbd09005a6fdc6cc@google.com> <0000000000000eb4b905a7277a7d@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000000eb4b905a7277a7d@google.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 02, 2020 at 10:41:16PM -0700, syzbot wrote: > syzbot has found a reproducer for the following crash on: > > HEAD commit: 1ee08de1 Merge tag 'for-5.8/io_uring-2020-06-01' of git://.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15f9e516100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=b46ebd806238a886 > dashboard link: https://syzkaller.appspot.com/bug?extid=5f1d24c49c1d2c427497 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > userspace arch: i386 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1667dcca100000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13f9e516100000 > > The bug was bisected to: > > commit f2c2e717642c66f7fe7e5dd69b2e8ff5849f4d10 > Author: Andrey Konovalov > Date: Mon Feb 24 16:13:03 2020 +0000 > > usb: gadget: add raw-gadget interface I thought this "bisect to the tool that finds bugs" issue was fixed :)