------------[ cut here ]------------ WARNING: CPU: 0 PID: 26631 at net/mptcp/subflow.c:1347 subflow_data_ready+0x2da/0x390 Modules linked in: CPU: 0 PID: 26631 Comm: syz-executor.0 Not tainted 6.1.72-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:subflow_data_ready+0x2da/0x390 net/mptcp/subflow.c:1346 Code: 60 0f 85 d2 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 95 9b 10 f7 4c 89 e7 e8 5d 0f 00 00 eb b8 e8 86 9b 10 f7 <0f> 0b e9 57 ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c bf fd ff ff 4c RSP: 0018:ffffc90005636b20 EFLAGS: 00010283 RAX: ffffffff8a79d73a RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc90004e72000 RSI: 000000000000e5af RDI: 000000000000e5b0 RBP: ffffc90005636bd0 R08: ffffffff8a79d630 R09: ffffed10029d73f8 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807c48a4c0 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888014eb9700 FS: 00007f26451f56c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1de9cd56c6 CR3: 000000003be1e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_data_queue+0x21c5/0x6fd0 net/ipv4/tcp_input.c:5102 tcp_rcv_state_process+0x2682/0x4510 net/ipv4/tcp_input.c:6704 tcp_v4_do_rcv+0x729/0xb00 net/ipv4/tcp_ipv4.c:1700 sk_backlog_rcv include/net/sock.h:1117 [inline] __release_sock+0x198/0x4b0 net/core/sock.c:2934 release_sock+0x5d/0x1c0 net/core/sock.c:3498 __mptcp_close_ssk+0x655/0xe60 net/mptcp/protocol.c:2444 mptcp_pm_nl_rm_addr_or_subflow+0x41d/0xa40 net/mptcp/pm_netlink.c:817 mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:848 [inline] mptcp_nl_remove_id_zero_address net/mptcp/pm_netlink.c:1494 [inline] mptcp_nl_cmd_del_addr+0xa5a/0x1ab0 net/mptcp/pm_netlink.c:1524 genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline] genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0xc1a/0xf70 net/netlink/genetlink.c:850 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f264447cd29 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:00007f26451f50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f26445ac050 RCX: 00007f264447cd29 RDX: 0000000000000000 RSI: 0000000020000740 RDI: 0000000000000005 RBP: 00007f26444c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f26445ac050 R15: 00007fffa3187f28