------------[ cut here ]------------ WARNING: CPU: 1 PID: 6635 at net/mptcp/subflow.c:1413 subflow_data_ready+0x370/0x618 net/mptcp/subflow.c:1412 Modules linked in: CPU: 1 PID: 6635 Comm: syz-executor.0 Not tainted 6.8.0-rc3-syzkaller-00010-gf735966ee23c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : subflow_data_ready+0x370/0x618 net/mptcp/subflow.c:1412 lr : subflow_data_ready+0x370/0x618 net/mptcp/subflow.c:1412 sp : ffff800097936910 x29: ffff800097936910 x28: ffff0000cc87e138 x27: ffff700012f26d54 x26: ffff0000cc87d5c0 x25: 0000000000000800 x24: ffff0000cd711e00 x23: dfff800000000000 x22: ffff80008ec6d3a0 x21: 0000000000000000 x20: ffff0000db619700 x19: ffff0000cc87d5c0 x18: 1fffe00036803996 x17: ffff80008ec6d000 x16: ffff8000805283f8 x15: 0000000000000001 x14: 1fffe0001990faba x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001990fabb x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000d1349e00 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff80008ac55030 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: subflow_data_ready+0x370/0x618 net/mptcp/subflow.c:1412 tcp_data_ready+0x22c/0x44c net/ipv4/tcp_input.c:5143 tcp_data_queue+0x1810/0x4db0 net/ipv4/tcp_input.c:5223 tcp_rcv_state_process+0x1fe4/0x3dc4 net/ipv4/tcp_input.c:6859 tcp_v4_do_rcv+0x5f0/0xe08 net/ipv4/tcp_ipv4.c:1929 sk_backlog_rcv include/net/sock.h:1092 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2973 release_sock+0x68/0x1b8 net/core/sock.c:3539 __mptcp_close_ssk+0x450/0xe38 net/mptcp/protocol.c:2418 mptcp_close_ssk+0xa4/0xd0 net/mptcp/protocol.c:2482 mptcp_pm_nl_rm_addr_or_subflow+0x350/0x8f8 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:1558 mptcp_nl_remove_addrs_list net/mptcp/pm_netlink.c:1575 [inline] mptcp_pm_nl_flush_addrs_doit+0x39c/0x688 net/mptcp/pm_netlink.c:1616 genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline] genl_rcv_msg+0x874/0xb6c net/netlink/genetlink.c:1208 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2543 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1217 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2674 __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:598 irq event stamp: 790 hardirqs last enabled at (789): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (789): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (790): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (784): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (784): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (767): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]---