------------[ cut here ]------------ WARNING: CPU: 0 PID: 6795 at net/mptcp/subflow.c:1411 subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1411 Modules linked in: CPU: 0 PID: 6795 Comm: syz-executor.5 Not tainted 6.7.0-rc8-syzkaller-00126-gac631873c9e7 #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:1411 Code: 89 ee e8 e3 67 21 f7 40 84 ed 75 21 e8 a9 6c 21 f7 44 89 fe bf 07 00 00 00 e8 0c 68 21 f7 41 83 ff 07 74 09 e8 91 6c 21 f7 90 <0f> 0b 90 e8 88 6c 21 f7 48 89 df e8 e0 b1 ff ff 31 ff 89 c5 89 c6 RSP: 0018:ffffc9000d65ed48 EFLAGS: 00010287 RAX: 0000000000017fbb RBX: ffff8880299ec980 RCX: ffffc9000ac5a000 RDX: 0000000000040000 RSI: ffffffff8a6605bf RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000007 R10: 000000000000000b R11: 1ffff110050b67f9 R12: 1ffff92001acbda9 R13: ffff8880523d0bc0 R14: ffff888014e6ec00 R15: 000000000000000b FS: 00007f9211f146c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6137cd56c6 CR3: 0000000016281000 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:5150 tcp_data_queue+0x19c3/0x5190 net/ipv4/tcp_input.c:5230 tcp_rcv_state_process+0x11f1/0x4e20 net/ipv4/tcp_input.c:6866 tcp_v4_do_rcv+0x369/0xa10 net/ipv4/tcp_ipv4.c:1929 sk_backlog_rcv include/net/sock.h:1121 [inline] __release_sock+0x132/0x3b0 net/core/sock.c:2976 release_sock+0x5a/0x1f0 net/core/sock.c:3542 __mptcp_close_ssk+0xaea/0xf20 net/mptcp/protocol.c:2435 mptcp_pm_nl_rm_addr_or_subflow+0x29e/0xa30 net/mptcp/pm_netlink.c:818 mptcp_pm_remove_subflow+0x34/0xa0 net/mptcp/pm.c:69 mptcp_pm_remove_addrs_and_subflows+0x5a2/0x6a0 net/mptcp/pm_netlink.c:1553 mptcp_nl_remove_addrs_list net/mptcp/pm_netlink.c:1570 [inline] mptcp_pm_nl_flush_addrs_doit+0x3fe/0x6e0 net/mptcp/pm_netlink.c:1611 genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972 genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline] genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2586 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2640 __sys_sendmsg+0x117/0x1e0 net/socket.c:2669 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: 0033:0x7f921127cd29 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:00007f9211f140c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f92113ac050 RCX: 00007f921127cd29 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 RBP: 00007f92112c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f92113ac050 R15: 00007ffe9a717398