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 2AF9BC433FE for ; Mon, 13 Dec 2021 16:40:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240948AbhLMQkQ (ORCPT ); Mon, 13 Dec 2021 11:40:16 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:39649 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240951AbhLMQkM (ORCPT ); Mon, 13 Dec 2021 11:40:12 -0500 Received: by mail-il1-f198.google.com with SMTP id d3-20020a056e021c4300b002a23bcd5ee7so15203218ilg.6 for ; Mon, 13 Dec 2021 08:40:12 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=3ID3XANipYuWRqgtPQ1BWFFiHhMGJojTDZG87ujp4KY=; b=o3u2iO/jcUE7O8geLTAHHRRCD+fZm5T6vk5RUcE3HFJ83WYBxiCnRTOMM1X5lsmZ2t rBNtNiF0+Uq+QS48H6X97JNqP8JoNOM/+WNDHnKV801RnnoFoJ2CjtzlHafiG5iiDfgx /XL3gWK6SaDItYXdiwtvLwyk0otncDCH/VXFup5xtcLp7PJlwpdBkQ/Pvhi04iK6GqXJ QhZJwDptDPRvsEWOh6KnY7UBjNYWwJWytkPPs/sl6MXb6Trrr1Lq7bIOyzSdgYHPjB8v CmkkU/aIWnYIcgEy4qtjRhgHBeR+ex2lgcfVPJPiGeov/pDsew/Hh+U0Jwry4dyYBuZx iFjA== X-Gm-Message-State: AOAM5302xh7D/OE1i+s5VYa4JclfNezbgwmIZC+00LG7mku2cCxGHMPE qW83um2XysDPeaVpdBVVwV9L4lw4r4Waq9RO1ybaZOi8PMfD X-Google-Smtp-Source: ABdhPJxnluLGA2ihn4eZD4ifoLmKB715ATvxozGrTPZEpBkNwTIO3XvJfes46/CiIaBlqjUweE8RJD/5lOM7GyE7ylqU+tT2teSE MIME-Version: 1.0 X-Received: by 2002:a92:d6c7:: with SMTP id z7mr35334339ilp.92.1639413611269; Mon, 13 Dec 2021 08:40:11 -0800 (PST) Date: Mon, 13 Dec 2021 08:40:11 -0800 In-Reply-To: <494d69b4-d9da-b698-39e6-ed41b64a09a7@kernel.dk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f0971c05d309b9c2@google.com> Subject: Re: [syzbot] possible deadlock in io_worker_cancel_cb From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, haoxu@linux.alibaba.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+b18b8be69df33a3918e9@syzkaller.appspotmail.com Tested on: commit: d800c65c io-wq: drop wqe lock before creating new worker git tree: git://git.kernel.dk/linux-block io_uring-5.16 kernel config: https://syzkaller.appspot.com/x/.config?x=6c3ab72998e7f1a4 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 Note: testing is done by a robot and is best-effort only.