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 1C3C8C433EF for ; Mon, 13 Dec 2021 16:40:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233954AbhLMQkO (ORCPT ); Mon, 13 Dec 2021 11:40:14 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:49812 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240950AbhLMQkM (ORCPT ); Mon, 13 Dec 2021 11:40:12 -0500 Received: by mail-io1-f71.google.com with SMTP id g16-20020a05660203d000b005f7b3b0642eso5178272iov.16 for ; Mon, 13 Dec 2021 08:40:11 -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=149ook09NwBLRT9lknLuIGYw0zCXLzD7dnZHeohbOG7eWcI4JBoWyNGMvYBvVshj83 K/u7DxNVMN+Ib0GRcrKv1VmHOBlDBLz85gdtVTUSUXJxnFSmDy1hbAAT4Yese8Cwc6h/ R2PlbXXQMsWwyiJsMQmxsE+Co1O2UiO0dGk+wgCSFZ17c7IA0nMlvZnJoWJzXJwJgKH2 8P1FSvZK5VL953p3MmgvnFWqIxW1j43HunFwxwYukCOHL6fUYGr8Pjml2lkpfg5s1bdN 73TG3/bGAsdRE7D5nJqs8WbWSPej7/0h1PcgD4NLhg2hyxwOrIkWei1Rt+JvAEyCF0Iz dj4Q== X-Gm-Message-State: AOAM533qqSPt/G8oaCTJ556JnzdZnYlgYU8svuMFQFLL0SAWlckFQ9aM OKaeA6m6IJAr77uN4TP4R2ANyvVhaUUrgDMGA5oybvZs8TuF 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: io-uring@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.