From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) (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 B91642AF11 for ; Mon, 7 Jul 2025 04:05:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751861130; cv=none; b=aDR3KNkXsnx6Zqhndszxp3LyjObTLUQNzJQf4DXQT/DMnUDJClyUgEFI42XCzRPeTCTRkfiQNmqLKY/HRBUnG1PwcpryKq0rRoFywanfRh65e74hJZ0AkMQHbUashWoVJnS37t7sMoCkdZ+BML5CXFy7C68cBRF0jdAgR79YhvA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751861130; c=relaxed/simple; bh=rjveDWq8KK4qBmmxeeVFa/DZwtPwsbJHz/rfwsr2Czc=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Wa1kuR3PvE1mUs5UniI7wTvnVyfoOVT75wNsTrMmyu4t+VFSGUECOfEvtnAkC9tQfGR1YZ/Kpj2I4K5FyI7cYf6p5Pj2K7XD1BNmDHDHp9pqDM35F0p8KnzolqqccWcCaJPwL7eDQKESn2gd+EPL7l/6qqXe69chPOF6v7q9n3Q= 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=209.85.166.206 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-il1-f206.google.com with SMTP id e9e14a558f8ab-3e0574d6a99so32929175ab.3 for ; Sun, 06 Jul 2025 21:05:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751861128; x=1752465928; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=9b8S7StRcDEyA/i2VOLC6sUORM9/5D6WMK6E3dsUzFI=; b=meGiXgaTTo1vGZEooyFVSkzF3D5Y8QdFCwhCW7p6oOnVWSKn1vxjEj0PtlRkTNc4CR PCsJyp+hVTiyrZ91DuXP0I5EjglIeOzyWimpZppW6PJOkN2jkCC4hUeCZ1aSx0ft8cRv Vj011S7WA2VdMfGS1t2UVdqKItRRO0JIWZj0lfdLH35OThJ2X6SytgfYKQBMwMERFVr8 7WUOAOlAbKgHAlPPdKNU0avDp57GTYCM2fFonrWIIGEiTHVABpks02b6EYJio9PVUyt3 Ozl4TSlW1yIH91K6gVpPalMmOUFkHgfGbH1Yu0y3rq9fgx00b2L/cypVt4Tm0rFvEDow MWIg== X-Forwarded-Encrypted: i=1; AJvYcCUXycUc6cqmCHhdnwnUybKkQTRUxmTmCPv9f1ueEfIhqwrmZKagjI8g3oVlL+H+iiw/t/vB/3E=@vger.kernel.org X-Gm-Message-State: AOJu0YyaVmbH2UpRGXTUDRb889zKodk1wzi9bnSdxo+rY3CD9HKfY8dM sDgoGDeDv+9Yu2W5hd9stTSnsUANhx+Zo6Vfc8aEbKw8jym3DJSP0Tbo6cJzly70xyMjjY3AunI 6IamlLACWef5ht42pqN5xq8oS+yt/yEvxiWXK/Mmaclfk8u7gOsneukAId7k= X-Google-Smtp-Source: AGHT+IG/n50KMMd7az6lAoy7v0ro9etKvox8cULsC7KPL4nLbBKmaieAK/iV2hmGn1xFGJLotJ0po1+l5bZuJYEmxxAuysonM2H6 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:318c:b0:3dd:f3e1:2899 with SMTP id e9e14a558f8ab-3e13ee85590mr79215175ab.2.1751861127927; Sun, 06 Jul 2025 21:05:27 -0700 (PDT) Date: Sun, 06 Jul 2025 21:05:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <686b4787.a00a0220.c7b3.0073.GAE@google.com> Subject: [syzbot] [mptcp?] WARNING in mptcp_pm_alloc_anno_list From: syzbot To: davem@davemloft.net, edumazet@google.com, geliang@kernel.org, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, martineau@kernel.org, matttbe@kernel.org, mptcp@lists.linux.dev, 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: 8b98f34ce1d8 net: ipv6: Fix spelling mistake git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=17d2b770580000 kernel config: https://syzkaller.appspot.com/x/.config?x=efe4e8ed5014b310 dashboard link: https://syzkaller.appspot.com/bug?extid=c6fca020ebd279c7412a compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ad0c8f9a1a48/disk-8b98f34c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3a8aacec88f6/vmlinux-8b98f34c.xz kernel image: https://storage.googleapis.com/syzbot-assets/0a86c0c1690c/bzImage-8b98f34c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c6fca020ebd279c7412a@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7141 at net/mptcp/pm.c:353 mptcp_pm_alloc_anno_list+0x329/0x390 net/mptcp/pm.c:353 Modules linked in: CPU: 0 UID: 0 PID: 7141 Comm: syz.3.339 Not tainted 6.16.0-rc3-syzkaller-00985-g8b98f34ce1d8 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:mptcp_pm_alloc_anno_list+0x329/0x390 net/mptcp/pm.c:353 Code: b0 01 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8c 26 15 00 cc e8 56 b2 6a f6 90 0f 0b 90 e9 8b fd ff ff e8 48 b2 6a f6 90 <0f> 0b 90 31 c0 eb d1 48 c7 c1 30 69 a1 8f 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000b5a6db8 EFLAGS: 00010287 RAX: ffffffff8b559c28 RBX: ffff88807a3f9700 RCX: 0000000000080000 RDX: ffffc9000cbdd000 RSI: 000000000000318f RDI: 0000000000003190 RBP: 0000000000000000 R08: 00000000000a0002 R09: 0000000000000000 R10: 0000000000000000 R11: aa1414acffff0000 R12: ffff88814632f000 R13: ffff88807d852040 R14: dffffc0000000000 R15: ffff88807a3fa181 FS: 00007fb6c8df66c0(0000) GS:ffff888125c48000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb6c8df4fb8 CR3: 00000000339a2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mptcp_pm_create_subflow_or_signal_addr+0x1448/0x1c30 net/mptcp/pm_kernel.c:318 mptcp_nl_add_subflow_or_signal_addr net/mptcp/pm_kernel.c:760 [inline] mptcp_pm_nl_add_addr_doit+0xe66/0x1460 net/mptcp/pm_kernel.c:840 genl_family_rcv_msg_doit+0x215/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb6caf8e929 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:00007fb6c8df6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb6cb1b5fa0 RCX: 00007fb6caf8e929 RDX: 0000000002000000 RSI: 0000200000000400 RDI: 000000000000000d RBP: 00007fb6cb010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb6cb1b5fa0 R15: 00007ffe35e566e8 --- 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