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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 5ABBCC433E1 for ; Thu, 27 Aug 2020 16:20:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37CC52073A for ; Thu, 27 Aug 2020 16:20:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727877AbgH0QUm (ORCPT ); Thu, 27 Aug 2020 12:20:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727827AbgH0QUk (ORCPT ); Thu, 27 Aug 2020 12:20:40 -0400 Received: from nautica.notk.org (ipv6.notk.org [IPv6:2001:41d0:1:7a93::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D8F7C061264; Thu, 27 Aug 2020 09:20:40 -0700 (PDT) Received: by nautica.notk.org (Postfix, from userid 1001) id CB8B4C01B; Thu, 27 Aug 2020 18:20:38 +0200 (CEST) Date: Thu, 27 Aug 2020 18:20:23 +0200 From: Dominique Martinet To: Mark Brown Cc: syzbot , alsa-devel@alsa-project.org, daniel.baluta@nxp.com, davem@davemloft.net, ericvh@gmail.com, kuba@kernel.org, lgirdwood@gmail.com, linux-kernel@vger.kernel.org, lucho@ionkov.net, netdev@vger.kernel.org, perex@perex.cz, rminnich@sandia.gov, syzkaller-bugs@googlegroups.com, tiwai@suse.com, v9fs-developer@lists.sourceforge.net Subject: Re: INFO: task can't die in p9_fd_close Message-ID: <20200827162023.GD31016@nautica> References: <000000000000ca0c6805adc56a38@google.com> <20200826104919.GE4965@sirena.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200826104919.GE4965@sirena.org.uk> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Mark Brown wrote on Wed, Aug 26, 2020: > On Wed, Aug 26, 2020 at 03:38:15AM -0700, syzbot wrote: > > > console output: https://syzkaller.appspot.com/x/log.txt?x=10615b36900000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=a61d44f28687f508 > > dashboard link: https://syzkaller.appspot.com/bug?extid=fbe34b643e462f65e542 > > compiler: gcc (GCC) 10.1.0-syz 20200507 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15920a05900000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a78539900000 > > > > The issue was bisected to: > > > > commit af3acca3e35c01920fe476f730dca7345d0a48df > > Author: Daniel Baluta > > Date: Tue Feb 20 12:53:10 2018 +0000 > > > > ASoC: ak5558: Fix style for SPDX identifier > > This bisection is clearly not accurate, I'm guessing the bug is > intermittent and it was just luck that landed it on this commit. It's a bug that's been present since day 1 pretty much. I have a fix that had been overcooking for a while which I had planned to take in this cycle -- I'll submit to -next during next week, so hopefully syzbot will be able to spend its time more usefully after that. -- Dominique