------------[ cut here ]------------ WARNING: CPU: 1 PID: 25281 at net/mptcp/subflow.c:1411 subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1411 Modules linked in: CPU: 1 PID: 25281 Comm: syz-executor.3 Not tainted 6.7.0-rc8-syzkaller-00130-g6d0dc8559c84 #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 93 71 21 f7 40 84 ed 75 21 e8 59 76 21 f7 44 89 fe bf 07 00 00 00 e8 bc 71 21 f7 41 83 ff 07 74 09 e8 41 76 21 f7 90 <0f> 0b 90 e8 38 76 21 f7 48 89 df e8 e0 b1 ff ff 31 ff 89 c5 89 c6 RSP: 0018:ffffc900036e6ca8 EFLAGS: 00010287 RAX: 00000000000209bd RBX: ffff88806f0d24c0 RCX: ffffc9000bac9000 RDX: 0000000000040000 RSI: ffffffff8a65fc0f RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000007 R10: 000000000000000b R11: 1ffffffff19f6d60 R12: 1ffff920006dcd95 R13: ffff88801e7ade00 R14: ffff8880496d7e00 R15: 000000000000000b FS: 0000000000000000(0000) GS:ffff8880b9900000(0063) knlGS:00000000f7fd6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000569a304c CR3: 00000000415bb000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000f01af DR6: 00000000ffff0ff0 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_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: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_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x62/0xe0 arch/x86/entry/common.c:321 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7ffc579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7fd65ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000740 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi