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=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 4C9AEC433DF for ; Thu, 21 May 2020 14:09:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C2B0206BE for ; Thu, 21 May 2020 14:09:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729984AbgEUOJy (ORCPT ); Thu, 21 May 2020 10:09:54 -0400 Received: from www262.sakura.ne.jp ([202.181.97.72]:54504 "EHLO www262.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729710AbgEUOJw (ORCPT ); Thu, 21 May 2020 10:09:52 -0400 Received: from fsav304.sakura.ne.jp (fsav304.sakura.ne.jp [153.120.85.135]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 04LE9Ikk073192; Thu, 21 May 2020 23:09:19 +0900 (JST) (envelope-from penguin-kernel@I-love.SAKURA.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav304.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav304.sakura.ne.jp); Thu, 21 May 2020 23:09:18 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav304.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 04LE9ImK073188 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 21 May 2020 23:09:18 +0900 (JST) (envelope-from penguin-kernel@I-love.SAKURA.ne.jp) Subject: Re: INFO: task hung in locks_remove_posix To: syzbot , syzkaller-bugs@googlegroups.com References: <000000000000c866c705a61a95d4@google.com> From: Tetsuo Handa Cc: linux-kernel@vger.kernel.org Message-ID: <9a337dfa-175f-e13b-1977-0f63d589f37c@I-love.SAKURA.ne.jp> Date: Thu, 21 May 2020 23:09:13 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <000000000000c866c705a61a95d4@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/05/21 5:53, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 806d8acc USB: dummy-hcd: use configurable endpoint naming .. > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=16c9ece2100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d800e9bad158025f > dashboard link: https://syzkaller.appspot.com/bug?extid=f5bc30abd8916982419c > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. This seems to be a mislabeling due to '?' in all lines in a trace. #syz dup: INFO: task hung in wdm_flush