From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) (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 AA6A21366 for ; Mon, 1 Jul 2024 20:50:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719867023; cv=none; b=Xq4QZkIG+nNuJD/K+ujJESZ9W/P+WtRiVrKxG/aIvMCUPJ+NQe4favKPwAsS4krONhPpLNdDHIS9R8U4eujZmfdVqf4YavRXj2CepUA5dBQj78hrSxZ6Q5MxNdhJ5KDQZuie10OKOciCej2RAxCKASKegYXMK7tl50AJaddrVvY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719867023; c=relaxed/simple; bh=sDzE7YpPHR3LR6h3gGbdoVVS/FgXk55Zx2hqr+8phRA=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=B8w1GeIxqiohZ6qrltM3TJadFxZEgLlDCVGKo/32aFyFDb21ZMPT3MZlpxLAnPtoMDXIHv2OTTJv1SxFJuF8plpVxCK9cswLkVuSJBQoerixjK2EuObLc3K5Pm7jNWPk3ljU0wWg+rdTUI7++M8sg3LtRHOiQ5KzzI24BjDObj4= 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=209.85.166.71 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-f71.google.com with SMTP id ca18e2360f4ac-7f3c9b72aebso368592539f.3 for ; Mon, 01 Jul 2024 13:50:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719867021; x=1720471821; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=sgcjFW3XYMXRUsUyvo0nFUiGW8OYCo7Qnh7ViycLBS8=; b=KJG1deAgNfzF1kbcz7xr3gdJHZLdvu+Xd2FZyATNvD7oB6UEE9YNRPorqIbwixgmlz auBJyp7hpgUVMAjFiTsQCLJIDqiaXsV6b/I/W2GSoclefZL7foxLE9dpgmyJD+LGe5Y1 Q/pL36mWTS1/XyzadUUwlAAL8Csz1NbDgp0jPlWAQCzJvkhy8l8AOFbly5TbLRsQi9jw nzkWjYKWeiSQWnC8Z1zwBNFI51QhPbrM3QdpV+P56eDIaBnQAwoGcA4uLf+VFT0JeTT2 NsCUPxUbgnOkZUxhlf1s/lfBmtouNzITgCxb2u+MtwdijXjHaPrWiZP3H0K/vF37QQCl 1Iwg== X-Forwarded-Encrypted: i=1; AJvYcCVBC/ACEKw1jrUlwDYkn5wT0uas7GntkKxs4Me+wwcC/AxE2onn5IT3obrqBBBJU8v6+HRL7Vu8dNzpdkfUjBVxSFxthUrJX5E= X-Gm-Message-State: AOJu0YxO3RTFJz2XUU192le6qP8QeyIj/I4WCx9eBBbLZTDoCX+MKdbw yxNlTCJoeBbE9KHPV+PGTaii65ufkM1G9g+JgAqiyN8qT7RzYS00LfdbTNond7hFSQw80qmX3h5 VJJrgEDBCgDKkRqtJS2if4rtJ0yRHEU5V36x98BIo14xwU/4Fu8cVty0= X-Google-Smtp-Source: AGHT+IECcA58JwTwKmPW9w3HsnoyKI8G9uHOhq/XgpAkFMrQg6ZCHsi88IFMOAM21hc/20xUT6xj6kmkBEKV/rbQxil0vQ9sdD3N Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:3426:b0:7f6:1f4c:96b6 with SMTP id ca18e2360f4ac-7f62ee9d66emr47517939f.3.1719867020939; Mon, 01 Jul 2024 13:50:20 -0700 (PDT) Date: Mon, 01 Jul 2024 13:50:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d82187061c35bef8@google.com> Subject: [syzbot] [io-uring?] WARNING in io_cqring_event_overflow (2) 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" Hello, syzbot found the following issue on: HEAD commit: 74564adfd352 Add linux-next specific files for 20240701 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=135c21d1980000 kernel config: https://syzkaller.appspot.com/x/.config?x=111e4e0e6fbde8f0 dashboard link: https://syzkaller.appspot.com/bug?extid=f7f9c893345c5c615d34 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/04b8d7db78fb/disk-74564adf.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d996f4370003/vmlinux-74564adf.xz kernel image: https://storage.googleapis.com/syzbot-assets/6e7e630054e7/bzImage-74564adf.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f7f9c893345c5c615d34@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5145 at io_uring/io_uring.c:703 io_cqring_event_overflow+0x442/0x660 io_uring/io_uring.c:703 Modules linked in: CPU: 0 UID: 0 PID: 5145 Comm: kworker/0:4 Not tainted 6.10.0-rc6-next-20240701-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: events io_fallback_req_func RIP: 0010:io_cqring_event_overflow+0x442/0x660 io_uring/io_uring.c:703 Code: 0f 95 c0 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 ed ae ed fc 90 0f 0b 90 e9 c5 fc ff ff e8 df ae ed fc 90 <0f> 0b 90 e9 6e fc ff ff e8 d1 ae ed fc c6 05 f6 ea f3 0a 01 90 48 RSP: 0018:ffffc900040d7a08 EFLAGS: 00010293 RAX: ffffffff84a5cf11 RBX: 0000000000000000 RCX: ffff8880299bbc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff84a5cb74 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffffff84a9f5d0 R12: ffff888021d0a000 R13: 0000000000000000 R14: ffff888021d0a000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e669ff800 CR3: 000000002a360000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __io_post_aux_cqe io_uring/io_uring.c:816 [inline] io_add_aux_cqe+0x27c/0x320 io_uring/io_uring.c:837 io_msg_tw_complete+0x9d/0x4d0 io_uring/msg_ring.c:78 io_fallback_req_func+0xce/0x1c0 io_uring/io_uring.c:256 process_one_work kernel/workqueue.c:3224 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305 worker_thread+0x86d/0xd40 kernel/workqueue.c:3383 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup