From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 E7444149C4E for ; Mon, 5 Aug 2024 07:53:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722844414; cv=none; b=XVYSi7PwnBiD8Wsm7kT+crWTPuG5KPyisnhUNHGk5UlZYpE9ITt7gUd43xCoH5L3lXg+nERI1MSwOofMn8IyvsrZ3oZrM20qs8xdhJkPa1URqbmrDr3oYBZ0+0Wu1IDomiy2mKnfV0rYkUXQRpCzg66/ihzfAnkYEDp5Pzwd+Ec= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722844414; c=relaxed/simple; bh=eue99aTsVuzB0mRkhKmhak8Q96MasOpRkJWMc1UDFic=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=CO56zYpBfrrM1z8EmyEtvDHY8KOg6c87f0txe/fzO+e6Zan59hsgd4WO/A5wB6DnJL4wlVWl6G8t0y4Owp9ygySm19SWyRnD1t5pyoZcC/ywyEeO6gH4p7wxazJImgQH2r7ayQ+V5KzXP1lGImTy6Ijl63SuylR3hDMy2bsJo2M= 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=209.85.166.69 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-f69.google.com with SMTP id ca18e2360f4ac-81f890b6fa6so1653201039f.0 for ; Mon, 05 Aug 2024 00:53:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722844412; x=1723449212; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=0lP8nWGXtQjOcrzLF9XcyPmaCAK4n7bbGrNmnZWOGIg=; b=MjNHt1MIqwQMLSmEjunIl7/i7icXKdKIjUoCFZzVWLAJka9Q03VCTqiqn36UAr0+L7 I6OqiI9PEctaHCv21q7DkN33uYKJNvkbQktcBOCuwxqVKu+AESkYinpVC54uAx8/K5e6 ShvbEZeu1I0FXJYbyRxvoode6vGQ/TONoqBDsIJeQWLlHzpbLD2C/ETJPdWqMk4XK60T wkMmf2rVrtWu1S8U1n7lgzq1/wkQpeEg77sAXci2inWuw3Yw1tmPXmvYeSymXevupove MnnJvl4R8xd8MUJsXJvzDQScPkM+NuCh5SiIJwMk0b71jpGQT/+U4vJMHiJr9kAzhLP7 /mEw== X-Forwarded-Encrypted: i=1; AJvYcCWByiJav1BaeKSBnErIX1BFh6eRUWL2s2w6wlxk4dV8EgS1vQAlim8hXhTcCtBKs7ZPRK+ZPr9abkg3ZMZ0RKPlhBkDCabM X-Gm-Message-State: AOJu0Yz/0hSpINzFYqRywQL0ycxv3ctu1yxywqzqYLqBlzhLMdnb4kGD onvzWzkYxcN3gIe4v6+RsYSkGq+1NnzwsRvCqsMvcgjy6zQHODOgRsv6yn0o4N98Aeqmw1ybYLr Ax5XpNXM89/3GX4I6HPsjqTpvQKhaO+Rh7SsGKuGiVi8FabEX+Ny9Hho= X-Google-Smtp-Source: AGHT+IHENX4/xU1/CrvhmG6qrY0Fn/1VdAfrnt2VWh+u2ftuT/zi5P2HWbIP31Z5mE4vVtXrQag0ko7PAlLTghYM5E343B18GnKK Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:214b:b0:39a:ea86:12f2 with SMTP id e9e14a558f8ab-39b1fca07c2mr10353075ab.6.1722844412054; Mon, 05 Aug 2024 00:53:32 -0700 (PDT) Date: Mon, 05 Aug 2024 00:53:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002f2474061eeaf974@google.com> Subject: [syzbot] [net?] WARNING in pppol2tp_release From: syzbot To: davem@davemloft.net, edumazet@google.com, jchapman@katalix.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 3608d6aca5e7 Merge branch 'dsa-en7581' into main git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=122d5b55980000 kernel config: https://syzkaller.appspot.com/x/.config?x=fbd68ab0b66eda34 dashboard link: https://syzkaller.appspot.com/bug?extid=0e85b10481d2f5478053 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/9d523e471f71/disk-3608d6ac.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ed20c68f58d7/vmlinux-3608d6ac.xz kernel image: https://storage.googleapis.com/syzbot-assets/320eb8606813/bzImage-3608d6ac.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0e85b10481d2f5478053@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5467 at kernel/workqueue.c:2259 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2258 Modules linked in: CPU: 1 UID: 0 PID: 5467 Comm: syz.3.43 Not tainted 6.11.0-rc1-syzkaller-00247-g3608d6aca5e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2258 Code: ff e8 11 84 36 00 90 0f 0b 90 e9 1e fd ff ff e8 03 84 36 00 eb 13 e8 fc 83 36 00 eb 0c e8 f5 83 36 00 eb 05 e8 ee 83 36 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc RSP: 0018:ffffc90004607b48 EFLAGS: 00010093 RAX: ffffffff815ce274 RBX: ffff8880661fda00 RCX: ffff8880661fda00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff815cd6d4 R09: 0000000000000000 R10: ffffc90004607c20 R11: fffff520008c0f85 R12: ffff88802ac33800 R13: ffff88802ac339c0 R14: dffffc0000000000 R15: 0000000000000008 FS: 00005555713eb500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 000000001eda6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queue_work_on+0x1c2/0x380 kernel/workqueue.c:2392 pppol2tp_release+0x163/0x230 net/l2tp/l2tp_ppp.c:445 __sock_release net/socket.c:659 [inline] sock_close+0xbc/0x240 net/socket.c:1421 __fput+0x24a/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f061e9779f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffff1c1fce8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000001017d RCX: 00007f061e9779f9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007ffff1c1fdc0 R08: 0000000000000001 R09: 00007ffff1c1ffcf R10: 00007f061e800000 R11: 0000000000000246 R12: 0000000000000032 R13: 00007ffff1c1fde0 R14: 00007ffff1c1fe00 R15: ffffffffffffffff --- 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