BUG: looking up invalid subclass: 8
turning off the locking correctness validator.
CPU: 1 PID: 8243 Comm: syz-executor902 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 look_up_lock_class kernel/locking/lockdep.c:673 [inline]
 register_lock_class+0x642/0x1320 kernel/locking/lockdep.c:756
 __lockdep_init_map+0x263/0x560 kernel/locking/lockdep.c:3277
 vlan_dev_set_lockdep_class net/8021q/vlan_dev.c:509 [inline]
 vlan_dev_init+0x745/0xc00 net/8021q/vlan_dev.c:604
 register_netdevice+0x291/0xe40 net/core/dev.c:7590
 register_vlan_dev+0x287/0x6d0 net/8021q/vlan.c:168
 vlan_newlink+0x3b9/0x510 net/8021q/vlan_netlink.c:165
 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 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+0x46/0xbb
RIP: 0033:0x446879
RSP: 002b:00007f6909a5d318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004cb448 RCX: 0000000000446879
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00000000004cb440 R08: 0000000000000009 R09: 0000000000000000
R10: 0000000000000028 R11: 0000000000000246 R12: 000000000049b164
R13: 00007ffec5cec74f R14: 00007f6909a5d400 R15: 0000000000022000
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