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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CDEFC433F5 for ; Mon, 13 Dec 2021 16:06:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233834AbhLMQGe (ORCPT ); Mon, 13 Dec 2021 11:06:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240287AbhLMQGd (ORCPT ); Mon, 13 Dec 2021 11:06:33 -0500 Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68F15C061574 for ; Mon, 13 Dec 2021 08:06:33 -0800 (PST) Received: by mail-io1-xd29.google.com with SMTP id e128so19059305iof.1 for ; Mon, 13 Dec 2021 08:06:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=wosmB9PxFEFwiBTzx+ccKeiFCy43oa7nLi45YgJ+TwI=; b=nIafQMrPaOkkx8ilGxdiTnYhtxnsm6iIl+ZubseP4x9pa5KrkyFSb8gn16j/6j1uHE XCoMwMiQLzQreqtEcA9ZmgEWVHHeB9ipW7IDCQDO53h3UMRjuWAOglJsNI+AU5E4HhQA RWoNuG7YlcY47vdDBqRsqaoDpCSgFOWRaJpYPgOfSgbzvDwKUKG1zaVJV7lr0+V25wSx rBTkdIwvdN0HbXzTaSZEn5wKCR4/NovHreqxn4JSIHGZlQdLvLYmyJ3ZppbW5ogltXjW fJ9qAMAfE0hviIhG3MzgTCpz2ozOp3TxgIM3Hl+eTzlpSed6PvZfzX7NAaRTieGtDz1L 915g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wosmB9PxFEFwiBTzx+ccKeiFCy43oa7nLi45YgJ+TwI=; b=1/a9NAPFKjvTP4jjqowk0H2siUVfkWMsJ4XicOT8lMrRN3gidez1d4YpQfjp8w32lV OBJ7NCWCu4uIixgPu3ur/P1cROpwi+eSfdJkQpIXVwCfd5bQmkBXt+PEP7W5be5kq+na m/cOVVOfXOoa52gqUL76LBv8NKlRTHqEkXkI/ZUqaRSzldyiYvBkWQDp7oiYnOrP6FZH s5yAbZ1HqTDHfgQ7LQpubB9O1fViMlCyqVgNYNpjayL+uEgTSr4xkXXKR21RuU7jrsC5 Ol9yLjfhU38QFZLbA4X/ZKD7cQwNlyQtRYzljcobJG5BVO7R+41diX7t8p66WhgM+Xqg chIw== X-Gm-Message-State: AOAM530XISPVLD+z///D9hZbIWajJ9iBohS2LJ+XnPzEO73bPFpTksh1 xnGJXzt8EoNiv/jbV9oKrwrR8OWI/mtlZw== X-Google-Smtp-Source: ABdhPJzsysd5Rxgl49Rp+s2Vk3n19RRPgUULpI3VbWFUOl7QEUjoTN4XMzpCL/pKOImKNofYNR7kXg== X-Received: by 2002:a05:6602:2cce:: with SMTP id j14mr34874989iow.111.1639411592711; Mon, 13 Dec 2021 08:06:32 -0800 (PST) Received: from [192.168.1.30] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id n10sm9652148ilk.58.2021.12.13.08.06.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 13 Dec 2021 08:06:32 -0800 (PST) Subject: Re: [syzbot] possible deadlock in io_worker_cancel_cb To: syzbot , asml.silence@gmail.com, haoxu@linux.alibaba.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000080c88305d300e67f@google.com> From: Jens Axboe Message-ID: <494d69b4-d9da-b698-39e6-ed41b64a09a7@kernel.dk> Date: Mon, 13 Dec 2021 09:06:29 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <00000000000080c88305d300e67f@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 12/12/21 11:08 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: a763d5a5abd6 Merge tag 'scsi-fixes' of git://git.kernel.or.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=12b900bab00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7d5e878e3399b6cc > dashboard link: https://syzkaller.appspot.com/bug?extid=b18b8be69df33a3918e9 > compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=143f7551b00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17f56825b00000 > > The issue was bisected to: > > commit 71a85387546e50b1a37b0fa45dadcae3bfb35cf6 > Author: Jens Axboe > Date: Fri Dec 10 15:29:30 2021 +0000 > > io-wq: check for wq exit after adding new worker task_work #syz test git://git.kernel.dk/linux-block io_uring-5.16 -- Jens Axboe