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=-8.8 required=3.0 tests=BAYES_00, 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 0F4B5C433E6 for ; Fri, 28 Aug 2020 13:43:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDAE0207DF for ; Fri, 28 Aug 2020 13:43:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729587AbgH1NmJ (ORCPT ); Fri, 28 Aug 2020 09:42:09 -0400 Received: from mga05.intel.com ([192.55.52.43]:50705 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729548AbgH1NkM (ORCPT ); Fri, 28 Aug 2020 09:40:12 -0400 IronPort-SDR: XBpWw5RKAnVwaco9YxKRcH2ZPU5mYYSruaMgG4dbl4S4o8rGOU2QfXdhzogct6bgkGDFqvNsQb II8HyONpwaqg== X-IronPort-AV: E=McAfee;i="6000,8403,9726"; a="241479069" X-IronPort-AV: E=Sophos;i="5.76,363,1592895600"; d="scan'208";a="241479069" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Aug 2020 06:36:18 -0700 IronPort-SDR: Rr08q6WrtP/vyNPM8WWINEBmTc7N4MsNykE3hPre/qvTrTWfgSrLuaC3y059yZIEonGy8xaKM/ b8l3MJxqPhRQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,363,1592895600"; d="scan'208";a="329954213" Received: from smile.fi.intel.com (HELO smile) ([10.237.68.40]) by orsmga008.jf.intel.com with ESMTP; 28 Aug 2020 06:36:15 -0700 Received: from andy by smile with local (Exim 4.94) (envelope-from ) id 1kBeY8-00C7um-G2; Fri, 28 Aug 2020 16:36:12 +0300 Date: Fri, 28 Aug 2020 16:36:12 +0300 From: Andy Shevchenko To: syzbot Cc: bigeasy@linutronix.de, felipe.balbi@linux.intel.com, gregkh@linuxfoundation.org, joe@perches.com, johan@kernel.org, kai.heng.feng@canonical.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, rafael.j.wysocki@intel.com, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Subject: Re: INFO: task hung in usb_bulk_msg Message-ID: <20200828133612.GR1891694@smile.fi.intel.com> References: <000000000000d3c499057536ce86@google.com> <000000000000c69c7805adef8597@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000c69c7805adef8597@google.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Fri, Aug 28, 2020 at 05:52:16AM -0700, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: 15bc20c6 Merge tag 'tty-5.9-rc3' of git://git.kernel.org/p.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1052a669900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=978db74cb30aa994 > dashboard link: https://syzkaller.appspot.com/bug?extid=7a7613e5ba9ae7bd15f9 > compiler: gcc (GCC) 10.1.0-syz 20200507 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101c328e900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155eff41900000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+7a7613e5ba9ae7bd15f9@syzkaller.appspotmail.com I have had hard times to understand the link between tty subsystem and this report. Also I'm wondering how 'Maintainers' column is formed in the dashboard view. And how the Cc list of this message in particular. -- With Best Regards, Andy Shevchenko