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 E603E2BD1C for ; Thu, 22 Feb 2024 09:35:22 +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=1708594524; cv=none; b=nz/RyEiqgyrO/RHr5ABwLGHlFDIxkKseILMdLYy5+gJ9B9ZrO9u4hORlZ6bVz/C92wSk+k9+Ii3cmVIpCq9xoyVc1Fw5gNt/bVlkQmt+j/NQ41tlFfQ80WEFnoY4nJltmO+Qj3C3OAlhl1Duug5ZRTM0YOKiwOH2pOuL6Mr07wY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708594524; c=relaxed/simple; bh=A1j6cI3HyuafN3Oq+UFelCk07PZrFKiD2hmPr5qdttg=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=b758zBIb5UpnkacKqRz0uK8/AtH+KfG8QeQCeF2uxYBIZNtjUZuD9NTWrrE8PisqSc9/74AdbAsuVJ6wBJ1ct03mWynBz5oB/f5pGqXOUHBHjiftNjGETgSCv5ceUJUrc0KGGiBXkFb2+259Gj8iCIwPXTdk64qvPYsltXSQ2ow= 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-7bff2d672a5so135211139f.0 for ; Thu, 22 Feb 2024 01:35:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708594522; x=1709199322; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=iz3Yq/YyMxk/zYfbHfrSscwB4SWnhgOeHQPFTViCTeE=; b=Fq2rH0Iiy2Rra7z9XSSgNYKO/wd3Gqis/iGrZP2AVeH7hHh6L04M2jJPy81SxTeLlS su+8Hr21QjbDt1KpdCNnBvBZkB5SwdVr5IiHYiXYRWX0uabOYgPk2YlgyDOXRU0d1hYX kyo6z6kZFYTTbU2gGCEI8FrvIL0cydVdTvzQOtPyCjQAMxO7Ln0N4KZJNFtVdVfK5GC7 SBdcXUO4IBe2M2R+7p4G0hF8i0ll7JWx9Iv4lKRl2xSsQdQXO3EjXq1mHEGK0cfv+JbZ 9amUYkGt7Udz8crYE0coe0ae/guG7mM9pzF9LVWnb0HGE+m2b2N8nEdS5zsRihnYn8+b B4ZQ== X-Forwarded-Encrypted: i=1; AJvYcCV+60dHExQnIsEnKmjQ4W98VaomyrIjMrx2O83MiiuFRJTSf2YL40jB2zFEFOOq60MKL49pEWPLTQA7QVT4V/WIR0LL2CEnEeM= X-Gm-Message-State: AOJu0YwIg7XD1Ezx7dRbTIsvFds71Q8VakdldhUPGKebwsfVRWSSPOWX aoCSY81jbDv5vKboMmxm+r2GiEigokPh9KnPbA/SaF56krdj/DcLGSRWQNNbe5LRRYCGhy5Jn9H aH+de8nuhzhm4y9tOWMauGP6pt+JAcT9RsQg65wLQYaqjcpZYPR0uQzY= X-Google-Smtp-Source: AGHT+IHDlAcJtRyAEJA7Xybjs90n8ZuT9bnHnHktG2E30gAYxxrBXTpXTbo0PX9Dvwjxxl0yT6twXr2tkIuG754ccJ2xf2g1KUvj Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:4703:b0:471:59aa:c087 with SMTP id cs3-20020a056638470300b0047159aac087mr185300jab.5.1708594521455; Thu, 22 Feb 2024 01:35:21 -0800 (PST) Date: Thu, 22 Feb 2024 01:35:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008441e70611f52901@google.com> Subject: [syzbot] [io-uring?] WARNING in io_ring_exit_work (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: 2c3b09aac00d Add linux-next specific files for 20240214 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14ba5b8a180000 kernel config: https://syzkaller.appspot.com/x/.config?x=176d2dcbf8ba7017 dashboard link: https://syzkaller.appspot.com/bug?extid=557a278955ff3a4d3938 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/ac51042b61c6/disk-2c3b09aa.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/012344301c35/vmlinux-2c3b09aa.xz kernel image: https://storage.googleapis.com/syzbot-assets/cba3c3e5cd7c/bzImage-2c3b09aa.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+557a278955ff3a4d3938@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 164 at io_uring/io_uring.c:3062 io_ring_exit_work+0x39b/0x850 io_uring/io_uring.c:3062 Modules linked in: CPU: 0 PID: 164 Comm: kworker/u8:5 Not tainted 6.8.0-rc4-next-20240214-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: events_unbound io_ring_exit_work RIP: 0010:io_ring_exit_work+0x39b/0x850 io_uring/io_uring.c:3062 Code: 23 e8 c9 0e 24 f6 48 8b 7c 24 10 48 8b 74 24 08 e8 1a b7 0a 00 48 85 c0 75 3d e8 b0 0e 24 f6 e9 96 fd ff ff e8 a6 0e 24 f6 90 <0f> 0b 90 b8 70 17 00 00 48 89 44 24 08 eb cd 44 89 f9 80 e1 07 80 RSP: 0018:ffffc90002e1fa40 EFLAGS: 00010293 RAX: ffffffff8b6fd11a RBX: 000000010000d095 RCX: ffff88801b7cda00 RDX: 0000000000000000 RSI: fffffffffffffffa RDI: 0000000000000000 RBP: ffffc90002e1fbb0 R08: ffffffff8b6fd0ed R09: 1ffff920005c3f38 R10: dffffc0000000000 R11: fffff520005c3f39 R12: 000000010000d08f R13: ffff88807afd6288 R14: ffff88807afd6538 R15: ffff88807afd6000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f01f05ad988 CR3: 0000000028fc8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work kernel/workqueue.c:3146 [inline] process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3226 worker_thread+0x86d/0xd70 kernel/workqueue.c:3307 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242 --- 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