Received: by 2002:a05:6a10:eb17:0:0:0:0 with SMTP id hx23csp87096pxb; Wed, 8 Sep 2021 18:16:25 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz6YvMZsu+QVCDG7YzFvDbTXQBZ4RYE7CvbvtTpalx9YXCABjEi33D9Hd+75QWiwWQ/gbJR X-Received: by 2002:a05:6638:1491:: with SMTP id j17mr390640jak.75.1631150185772; Wed, 08 Sep 2021 18:16:25 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1631150185; cv=none; d=google.com; s=arc-20160816; b=dRYwYjlFQDNhE+BTzvM5xJOWkMRWk6FTbMjMzM+sWKirrWY3z+xeZ2MOTnwgymFla8 vUp/o9JuS8QyOiGyruZsDX6G6C98xTVUpZ1nKTXR+0KOFg/ucD1mg8BjSUbx6EmpczIh aHu36Eg3Mo+DVUXFnlSOfa6KZD7jGogfb2qXABZInVbOMiAV7Pzyjpi545LbNFbjWoPM RRI59mKImb9N1hiTr21JjkZc0QHigiA29zZ/0NIU8Ojm4lG2fl/YhRqQeyCLU+G+GwGV dDEphd8WrWOQjzJDQ2wWNUK50gVuU3RP6gzn6dj7OjZm4n+c+7R0RMrIoLeZ4yCmglZb yqMw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:from:subject:message-id:in-reply-to:date :mime-version; bh=pKMCZVg6cR9WvW2VYzENzm73CCK4MaLG6KWqwM4tTuM=; b=qg8Q/X+rtCP3dupPwYrbsK0Emx/UCTj4cX/kGC0dK3Av77i2yt5iYAuChiiX/R3kjr L0Eu5f4YXNA99+BIbHqIgAcmBJlU93TDz9laj+wJdRwiBNiXDjX/bY7gSryKQwx2ILup 5V703Nmoen9Y7Tayf5/NadHsHi7qxSGQjJ+twjVTVEwKo6sTnKv/eio3z4YraudFLGwV b4MYWXMJfYgWwX1rMqxjmfCInyR2NFIBn8h9uteg3ypaKVB/HdkO/0Btd/Wnn/+SBINi FhypcD0+VDIdu+T6qAw/9sAYYAwdWvAgXVQs6foP8k3+4MlZS7dJgPRNduXKMNwbY8j1 E9Sw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b16si133555ior.73.2021.09.08.18.16.14; Wed, 08 Sep 2021 18:16:25 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348941AbhIIBQ1 (ORCPT + 99 others); Wed, 8 Sep 2021 21:16:27 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:40593 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232144AbhIIBQX (ORCPT ); Wed, 8 Sep 2021 21:16:23 -0400 Received: by mail-io1-f69.google.com with SMTP id i26-20020a5e851a000000b005bb55343e9bso254696ioj.7 for ; Wed, 08 Sep 2021 18:15:14 -0700 (PDT) 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=pKMCZVg6cR9WvW2VYzENzm73CCK4MaLG6KWqwM4tTuM=; b=6FcNYNw3fjCm2Ciqj7ghsBYQGxse63OZd5dBiVb5rJwImA7tWZZk7xzLSHy0fWoHsE svxRRAzGEI+RR8lVx0p1qaI32bBcQ9YQiiWb/LqEuX105NFf0snPzx3PavkuHcm6HCl5 oR77JWbr8MWQRlRIEtQ2/nGk7mm39NylhJg7TKtm23/1Y/10+kKBp33T6FWa3mRKd9Hz QZzPDh+jBcM+qJPG+ASSl1zwcJN5pO5FtW1SUuQfs+4MeiilKZS5Ab2QFpNxdLu9fOf7 hRKv6dOkxNR58KobCB7h4ZgYbcZyVWhvy2kaTXUAtIXknaAI/m3F/qxhhODv44Oays34 hDTw== X-Gm-Message-State: AOAM531t8EkMC5uaFWwhHvECGPBbVuxSIReqMgaMk2/iPnUNJ05WF3UI NzJQTi3nfkHE00+64tM+vmUY2eYmJkImHEFrJK7hezIycN8n MIME-Version: 1.0 X-Received: by 2002:a6b:6f18:: with SMTP id k24mr378847ioc.196.1631150114505; Wed, 08 Sep 2021 18:15:14 -0700 (PDT) Date: Wed, 08 Sep 2021 18:15:14 -0700 In-Reply-To: <1ec6e8e0-d253-5f84-982e-4146db278655@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000026886605cb85bbf5@google.com> Subject: Re: [syzbot] INFO: task hung in io_wq_put_and_exit From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, 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+f62d3e0a4ea4f38f5326@syzkaller.appspotmail.com Tested on: commit: cee36720 Revert "io-wq: make worker creation resilient.. git tree: https://github.com/isilence/linux.git syztest_iowq_workers kernel config: https://syzkaller.appspot.com/x/.config?x=f9bfda6f9dee77cd dashboard link: https://syzkaller.appspot.com/bug?extid=f62d3e0a4ea4f38f5326 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 Note: testing is done by a robot and is best-effort only.