BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:49
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 10627, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by syz-executor.4/10627:
 #0: ffff80000d894668 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:860
 #1: ffff80000d894578 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffff80000d894578 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x80/0x4f4 net/netlink/genetlink.c:848
 #2: ffff0000cb1aa578 (k-clock-AF_INET){+++.}-{2:2}, at: l2tp_tunnel_register+0x354/0x79c net/l2tp/l2tp_core.c:1477
Preemption disabled at:
[<ffff80000bb31404>] l2tp_tunnel_register+0x354/0x79c net/l2tp/l2tp_core.c:1477
CPU: 1 PID: 10627 Comm: syz-executor.4 Not tainted 6.1.0-rc6-syzkaller-32662-g6d464646530f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:156
 show_stack+0x2c/0x54 arch/arm64/kernel/stacktrace.c:163
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x104/0x16c lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 __might_resched+0x208/0x218 kernel/sched/core.c:9908
 __might_sleep+0x48/0x78 kernel/sched/core.c:9837
 percpu_down_read include/linux/percpu-rwsem.h:49 [inline]
 cpus_read_lock+0x28/0x1e0 kernel/cpu.c:310
 static_key_slow_inc+0x1c/0x38 kernel/jump_label.c:158
 udp_encap_enable+0x1c/0x28 net/ipv4/udp.c:598
 udp_tunnel_encap_enable include/net/udp_tunnel.h:189 [inline]
 setup_udp_tunnel_sock+0x100/0x124 net/ipv4/udp_tunnel_core.c:81
 l2tp_tunnel_register+0x68c/0x79c net/l2tp/l2tp_core.c:1509
 l2tp_nl_cmd_tunnel_create+0x1f8/0x330 net/l2tp/l2tp_netlink.c:245
 genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
 genl_rcv_msg+0x458/0x4f4 net/netlink/genetlink.c:850
 netlink_rcv_skb+0xe8/0x1d4 net/netlink/af_netlink.c:2540
 genl_rcv+0x38/0x50 net/netlink/genetlink.c:861
 netlink_unicast_kernel+0xfc/0x1dc net/netlink/af_netlink.c:1319
 netlink_unicast+0x164/0x248 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x484/0x584 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x2f8/0x440 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x1ac/0x228 net/socket.c:2565
 __do_sys_sendmsg net/socket.c:2574 [inline]
 __se_sys_sendmsg net/socket.c:2572 [inline]
 __arm64_sys_sendmsg+0x2c/0x3c net/socket.c:2572
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584