BUG: looking up invalid subclass: 8 turning off the locking correctness validator. CPU: 1 PID: 7403 Comm: syz-executor679 Not tainted 4.14.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 look_up_lock_class kernel/locking/lockdep.c:673 [inline] register_lock_class+0x4cf/0x1600 kernel/locking/lockdep.c:756 __lockdep_init_map+0x2a7/0x560 kernel/locking/lockdep.c:3273 vlan_dev_set_lockdep_class net/8021q/vlan_dev.c:509 [inline] vlan_dev_init+0x78a/0xc00 net/8021q/vlan_dev.c:604 register_netdevice+0x286/0xc70 net/core/dev.c:7590 register_vlan_dev+0x28d/0x6a0 net/8021q/vlan.c:168 vlan_newlink+0x3b9/0x510 net/8021q/vlan_netlink.c:165 rtnl_newlink+0xecb/0x1720 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4315 netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xc5/0x100 net/socket.c:656 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4494f9 RSP: 002b:00007fcfeda35d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 00000000004494f9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c R13: 0000000000000000 R14: 0000000000000000 R15: 0565001000000050 Dead loop on virtual device veth0_vlan, fix it urgently! Dead loop on virtual device veth0_vlan, fix it urgently! Dead loop on virtual device veth1_vlan, fix it urgently! Dead loop on virtual device veth1_vlan, fix it urgently! Dead loop on virtual device veth1_vlan, fix it urgently! Dead loop on virtual device veth0_vlan, fix it urgently! Dead loop on virtual device veth0_vlan, fix it urgently! Dead loop on virtual device team0, fix it urgently! Dead loop on virtual device team0, fix it urgently! Dead loop on virtual device veth0, fix it urgently! net_ratelimit: 1400 callbacks suppressed Dead loop on virtual device veth0_to_bond, fix it urgently! Dead loop on virtual device veth0_to_team, fix it urgently! Dead loop on virtual device veth0_to_bridge, fix it urgently! Dead loop on virtual device vlan70, fix it urgently! Dead loop on virtual device vlan36, fix it urgently! Dead loop on virtual device vlan88, fix it urgently! Dead loop on virtual device vlan35, fix it urgently! Dead loop on virtual device vlan68, fix it urgently! Dead loop on virtual device veth0_to_hsr, fix it urgently! Dead loop on virtual device vlan118, fix it urgently!