INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 3693 Comm: syz-executor0 Not tainted 4.15.0-rc9+ #212
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+0x194/0x257 lib/dump_stack.c:53
 register_lock_class+0x542/0x2cd0 kernel/locking/lockdep.c:752
 __lock_acquire+0x1de/0x3e00 kernel/locking/lockdep.c:3314
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3914
 del_timer_sync+0xba/0x240 kernel/time/timer.c:1275
 led_tg_destroy+0x2dd/0x3f0 net/netfilter/xt_LED.c:185
 cleanup_entry+0x218/0x350 net/ipv4/netfilter/ip_tables.c:659
 __do_replace+0x79d/0xa50 net/ipv4/netfilter/ip_tables.c:1094
 do_replace net/ipv4/netfilter/ip_tables.c:1150 [inline]
 do_ipt_set_ctl+0x40f/0x5f0 net/ipv4/netfilter/ip_tables.c:1680
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260
 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2872
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x455d8a
RSP: 002b:00007ffe17bd80e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000006f89bc RCX: 0000000000455d8a
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006f89bc R08: 00000000000002d8 R09: 0000000000000001
R10: 00000000006f8de8 R11: 0000000000000206 R12: 0000000000000000
R13: 00000000006fb964 R14: 0000000000021ee3 R15: 0000000000000001
------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint:           (null)
WARNING: CPU: 1 PID: 3693 at lib/debugobjects.c:291 debug_print_object+0x166/0x220 lib/debugobjects.c:288
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3693 Comm: syz-executor0 Not tainted 4.15.0-rc9+ #212
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+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1096
RIP: 0010:debug_print_object+0x166/0x220 lib/debugobjects.c:288
RSP: 0018:ffff8801d9b977d0 EFLAGS: 00010282
RAX: dffffc0000000008 RBX: 0000000000000005 RCX: ffffffff8159f32e
RDX: 0000000000000000 RSI: 1ffff1003b372eb5 RDI: ffff8801db31f6d8
RBP: ffff8801d9b97810 R08: 0000000000000000 R09: 1ffff1003b372e87
R10: ffff8801d9b976d0 R11: ffffffff86b38558 R12: 0000000000000001
R13: ffffffff86b49d00 R14: ffffffff86011200 R15: ffffffff815f1cb0
 debug_object_assert_init+0x303/0x570 lib/debugobjects.c:654
 debug_timer_assert_init kernel/time/timer.c:707 [inline]
 debug_assert_init kernel/time/timer.c:759 [inline]
 try_to_del_timer_sync+0x74/0x130 kernel/time/timer.c:1215
 del_timer_sync+0x18a/0x240 kernel/time/timer.c:1285
 led_tg_destroy+0x2dd/0x3f0 net/netfilter/xt_LED.c:185
 cleanup_entry+0x218/0x350 net/ipv4/netfilter/ip_tables.c:659
 __do_replace+0x79d/0xa50 net/ipv4/netfilter/ip_tables.c:1094
 do_replace net/ipv4/netfilter/ip_tables.c:1150 [inline]
 do_ipt_set_ctl+0x40f/0x5f0 net/ipv4/netfilter/ip_tables.c:1680
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260
 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2872
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x455d8a
RSP: 002b:00007ffe17bd80e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000006f89bc RCX: 0000000000455d8a
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000006f89bc R08: 00000000000002d8 R09: 0000000000000001
R10: 00000000006f8de8 R11: 0000000000000206 R12: 0000000000000000
R13: 00000000006fb964 R14: 0000000000021ee3 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..