------------[ cut here ]------------ WARNING: CPU: 1 PID: 14938 at net/mptcp/subflow.c:1406 subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405 Modules linked in: CPU: 1 PID: 14938 Comm: syz-executor.1 Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405 lr : subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405 sp : ffff800097fa6950 x29: ffff800097fa6950 x28: ffff0000d18fbb90 x27: ffff0000d18fbc60 x26: 1fffe0001b803f45 x25: 0000000000000800 x24: ffff0000d1fdf800 x23: dfff800000000000 x22: ffff80008e33d3a8 x21: 0000000000000000 x20: ffff00013a3ca340 x19: ffff0000d18fb100 x18: 1fffe000368333ce x17: ffff80008e33d000 x16: ffff800080515ce8 x15: 0000000000000001 x14: 1fffe0001a31f622 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff0000d7b65340 x7 : ffff80008005f20c x6 : ffff80008005f408 x5 : ffff00012b58e428 x4 : ffff800097fa6530 x3 : ffff80008a61db04 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405 tcp_data_ready+0x22c/0x44c net/ipv4/tcp_input.c:5034 tcp_data_queue+0x1cf8/0x5430 net/ipv4/tcp_input.c:5114 tcp_rcv_state_process+0x204c/0x3e58 net/ipv4/tcp_input.c:6728 tcp_v4_do_rcv+0x5f0/0xe00 net/ipv4/tcp_ipv4.c:1751 sk_backlog_rcv include/net/sock.h:1121 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2983 release_sock+0x68/0x1b0 net/core/sock.c:3520 __mptcp_close_ssk+0x454/0xabc net/mptcp/protocol.c:2419 mptcp_close_ssk+0xa8/0xd4 net/mptcp/protocol.c:2482 mptcp_pm_nl_rm_addr_or_subflow+0x350/0x8f4 net/mptcp/pm_netlink.c:818 mptcp_pm_nl_rm_subflow_received+0x2c/0x3c net/mptcp/pm_netlink.c:849 mptcp_pm_remove_subflow+0x40/0xb8 net/mptcp/pm.c:69 mptcp_pm_remove_addrs_and_subflows+0x394/0x418 net/mptcp/pm_netlink.c:1575 mptcp_nl_remove_addrs_list net/mptcp/pm_netlink.c:1592 [inline] mptcp_nl_cmd_flush_addrs+0x394/0x680 net/mptcp/pm_netlink.c:1633 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x854/0xb4c net/netlink/genetlink.c:1066 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2545 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2558 ___sys_sendmsg net/socket.c:2612 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2641 __do_sys_sendmsg net/socket.c:2650 [inline] __se_sys_sendmsg net/socket.c:2648 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2648 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 1072 hardirqs last enabled at (1071): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:240 hardirqs last disabled at (1072): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (1056): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (1056): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:582 softirqs last disabled at (1029): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]---