From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25EE8433CB for ; Fri, 4 Apr 2025 15:01:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743778865; cv=none; b=D318w12jJIxGVyc+ksHMzPnUJW8xZkNbUyzoSDGGLhR04/6ZSu15Rb4HUhfhIeD+KHaxs9Bt9g4uzrd5AH+K50OyT0G0/JkwzSjFLfaWBB1iFr3Mbm1PTj0yq5SjupkObBZulPM0x9Qu8I6bb1qc8fsAMVD5FNgpWyZ0xgKDgJ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743778865; c=relaxed/simple; bh=AYko1VWOfBVHv9E1RRyYX2hPQcGc735qlsJ419fVcMg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=bzN0NKJGKzBLXMiQoYfj/4dwnDoaBaIgzdimb4deMdoxTfBxaeTS9r9cfefD7OOK1yDu+f0DVHeHR0J2EnUR+KxJ0EQ87NLAVI1bIIHkgPx8a7qsGGmQ7ck1X5UjbKh0y/u8+uVFYu/jKK8D4YpTsPdBp0b5+ndW1Gvr+CS8t+o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-85ed07f832dso210032539f.2 for ; Fri, 04 Apr 2025 08:01:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743778863; x=1744383663; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=/l5DxVvZzV/XmdJEnN3NdjGY2wFy/vsojLyqFJVpr58=; b=py0wkqtRxGbO4rwLNQ8hhoWhgEzOPAlz7IOU3Lm1SuHMJYtDxppkpZdoGW7ZkS15Eq 3tVX0rPtXINUPvgUOTVWB43/z+lh9Q2dqIc/pBAc+UaHA5nt+rPzcebiKvkC6gV/FRrC AWOnTKs51zH+dgMb2wet8/Ad/VetzrOJolly4d/0coDCjkqKFNJ+P4kIYgHKBFy8NAYX V9lQ4rL6AjrTEaVjeWWR2mSYiiZP68UcRdmuebEjIKomrlle0qMUs0hT2LwrdstBCu7d Q6mqfmzTdTJk3Jm8q/9Qb2cV2yzJmwjBtF6EpctI/cyRtg7llRyAv68R2ftXH7PJyBN9 zUIw== X-Forwarded-Encrypted: i=1; AJvYcCVJlVzViPTR4zu2o7wmWtVlBkYkV5tFfusVu/8tZqrKEtC0lfqcT4BMjPBZikiZONerUb2XsST1LJZ7Ag==@vger.kernel.org X-Gm-Message-State: AOJu0YwwWeO6+wGLaDESZpx+IF5HtIPV2/PVhdxh6us1w9eNLXeqwRJC iSf4U6wIz7FoYyCsBdI1U5NpFb7yhruPC5zG+ouIYn9/YUUGoER6ZgpuMy8N2oetRmlP3QlqEDV vsKrNl6It3F7M9Ycuvq+l6IkDR/1+AxZRbWXu0TpwDk07Yk4YkSfdT9w= X-Google-Smtp-Source: AGHT+IG6eW3ypD/dyFDHuVvisZ3SglKvgxqH17m5/3K5JlVsbmlRsCifJq5LIVx1t3MJHQszTfOAcu1rYMYYpd09FqGjs10n4FyV Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:c243:0:b0:3d0:235b:4810 with SMTP id e9e14a558f8ab-3d6e3ee191dmr43590305ab.2.1743778863169; Fri, 04 Apr 2025 08:01:03 -0700 (PDT) Date: Fri, 04 Apr 2025 08:01:03 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67eff42f.050a0220.2dd465.0214.GAE@google.com> Subject: Re: [syzbot] [block?] possible deadlock in blk_mq_freeze_queue_nomemsave From: syzbot To: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for batadv0 to become free. Usage count = 3 Tested on: commit: 665c7e64 loop: replace freezing queue with quiesce & f.. git tree: https://github.com/ming1/linux.git syzbot-test console output: https://syzkaller.appspot.com/x/log.txt?x=12321178580000 kernel config: https://syzkaller.appspot.com/x/.config?x=adffebefc9feb9d6 dashboard link: https://syzkaller.appspot.com/bug?extid=9dd7dbb1a4b915dee638 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.