INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 4095 Comm: syz-executor1 Not tainted 4.16.0-rc2+ #320
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
 assign_lock_key kernel/locking/lockdep.c:729 [inline]
 register_lock_class+0x1b6c/0x2820 kernel/locking/lockdep.c:755
 __lock_acquire+0x1de/0x3e00 kernel/locking/lockdep.c:3319
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920
 del_timer_sync+0xba/0x240 kernel/time/timer.c:1283
 led_tg_destroy+0x2dd/0x3f0 net/netfilter/xt_LED.c:185
 cleanup_entry+0x242/0x380 net/ipv6/netfilter/ip6_tables.c:673
 __do_replace+0x7ac/0xa70 net/ipv6/netfilter/ip6_tables.c:1108
 do_replace net/ipv6/netfilter/ip6_tables.c:1164 [inline]
 do_ip6t_set_ctl+0x40f/0x5f0 net/ipv6/netfilter/ip6_tables.c:1686
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt+0x10b/0x130 net/ipv6/ipv6_sockglue.c:927
 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45689a
RSP: 002b:0000000000a3e3b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000a3e3e0 RCX: 000000000045689a
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000013
RBP: 00000000006fd6c0 R08: 00000000000003b8 R09: 0000000000004000
R10: 00000000006fb4a0 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000013 R14: 0000000000000029 R15: 00000000006fb500
------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint:           (null)
WARNING: CPU: 0 PID: 4095 at lib/debugobjects.c:291 debug_print_object+0x166/0x220 lib/debugobjects.c:288
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4095 Comm: syz-executor1 Not tainted 4.16.0-rc2+ #320
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+0x58/0x80 arch/x86/entry/entry_64.S:957
RIP: 0010:debug_print_object+0x166/0x220 lib/debugobjects.c:288
RSP: 0018:ffff8801bc45f680 EFLAGS: 00010286
RAX: dffffc0000000008 RBX: 0000000000000005 RCX: ffffffff815abdbe
RDX: 0000000000000000 RSI: 1ffff1003788be80 RDI: 1ffff1003788be55
RBP: ffff8801bc45f6c0 R08: 0000000000000000 R09: 1ffff1003788be27
R10: ffff8801bc45f580 R11: ffffffff86b394b8 R12: 0000000000000001
R13: ffffffff86b4ad20 R14: ffffffff86007e20 R15: ffffffff815fe820
 debug_object_assert_init+0x303/0x570 lib/debugobjects.c:654
 debug_timer_assert_init kernel/time/timer.c:724 [inline]
 debug_assert_init kernel/time/timer.c:776 [inline]
 try_to_del_timer_sync+0x74/0x130 kernel/time/timer.c:1223
 del_timer_sync+0x18a/0x240 kernel/time/timer.c:1293
 led_tg_destroy+0x2dd/0x3f0 net/netfilter/xt_LED.c:185
 cleanup_entry+0x242/0x380 net/ipv6/netfilter/ip6_tables.c:673
 __do_replace+0x7ac/0xa70 net/ipv6/netfilter/ip6_tables.c:1108
 do_replace net/ipv6/netfilter/ip6_tables.c:1164 [inline]
 do_ip6t_set_ctl+0x40f/0x5f0 net/ipv6/netfilter/ip6_tables.c:1686
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt+0x10b/0x130 net/ipv6/ipv6_sockglue.c:927
 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45689a
RSP: 002b:0000000000a3e3b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000a3e3e0 RCX: 000000000045689a
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000013
RBP: 00000000006fd6c0 R08: 00000000000003b8 R09: 0000000000004000
R10: 00000000006fb4a0 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000013 R14: 0000000000000029 R15: 00000000006fb500
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..