------------[ cut here ]------------ WARNING: CPU: 1 PID: 9135 at net/mptcp/subflow.c:1405 subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1405 Modules linked in: CPU: 1 PID: 9135 Comm: syz-executor.5 Not tainted 6.7.0-rc5-syzkaller-01515-g1728df7fc11b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1405 Code: 89 ee e8 e3 76 20 f7 40 84 ed 75 21 e8 a9 7b 20 f7 44 89 fe bf 07 00 00 00 e8 0c 77 20 f7 41 83 ff 07 74 09 e8 91 7b 20 f7 90 <0f> 0b 90 e8 88 7b 20 f7 48 89 df e8 e0 b2 ff ff 31 ff 89 c5 89 c6 RSP: 0018:ffffc900001f05a8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88807b368000 RCX: ffffffff8a672204 RDX: ffff88801ddf3b80 RSI: ffffffff8a67220f RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000007 R10: 000000000000000b R11: 0000000000000000 R12: 1ffff9200003e0b5 R13: ffff888079c23ac0 R14: ffff88807aa61a00 R15: 000000000000000b FS: 00007f6832a056c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f00f30c56be CR3: 000000007997a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_data_ready+0x14c/0x5b0 net/ipv4/tcp_input.c:5143 tcp_data_queue+0x19bb/0x5190 net/ipv4/tcp_input.c:5223 tcp_rcv_state_process+0x11d2/0x4e30 net/ipv4/tcp_input.c:6859 tcp_v4_do_rcv+0x369/0xa10 net/ipv4/tcp_ipv4.c:1935 tcp_v4_rcv+0x3892/0x3b40 net/ipv4/tcp_ipv4.c:2335 ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2e4/0x510 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish+0x1b8/0x2e0 net/ipv4/ip_input.c:449 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip_rcv+0xaf/0xd0 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5528 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5642 process_backlog+0x101/0x6b0 net/core/dev.c:5970 __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6570 napi_poll net/core/dev.c:6639 [inline] net_rx_action+0x956/0xe90 net/core/dev.c:6772 __do_softirq+0x21a/0x8de kernel/softirq.c:553 do_softirq kernel/softirq.c:454 [inline] do_softirq+0xaa/0xe0 kernel/softirq.c:441 __local_bh_enable_ip+0xfc/0x120 kernel/softirq.c:381 __mptcp_close_ssk+0xaf3/0xf30 net/mptcp/protocol.c:2435 mptcp_pm_nl_rm_addr_or_subflow+0x29e/0xa30 net/mptcp/pm_netlink.c:818 mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:849 [inline] mptcp_nl_remove_id_zero_address+0x310/0x4b0 net/mptcp/pm_netlink.c:1452 mptcp_pm_nl_del_addr_doit+0x96b/0xd60 net/mptcp/pm_netlink.c:1482 genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:1113 genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline] genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f6831c7cbe9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6832a050c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6831d9c120 RCX: 00007f6831c7cbe9 RDX: 0000000000000000 RSI: 0000000020000740 RDI: 0000000000000004 RBP: 00007f6831cc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f6831d9c120 R15: 00007ffee3bd5438