------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 0 PID: 19968 at lib/debugobjects.c:325 debug_print_object+0x168/0x250 lib/debugobjects.c:325
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 19968 Comm: kworker/0:1 Not tainted 5.1.0+ #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events sk_psock_destroy_deferred
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x715 kernel/panic.c:214
 __warn.cold+0x20/0x4c kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:325
Code: dd 40 bb a4 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 40 bb a4 87 48 c7 c7 e0 b0 a4 87 e8 86 fb 0d fe <0f> 0b 83 05 1b c6 4b 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3
RSP: 0000:ffff88803cd6f970 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ac5d6 RDI: ffffed10079adf20
RBP: ffff88803cd6f9b0 R08: ffff888034d24140 R09: ffffed1015d040f1
R10: ffffed1015d040f0 R11: ffff8880ae820787 R12: 0000000000000001
R13: ffffffff88bacde0 R14: ffffffff816034b0 R15: ffff888034e952e8
 debug_object_assert_init lib/debugobjects.c:694 [inline]
 debug_object_assert_init+0x23a/0x2f0 lib/debugobjects.c:665
 debug_timer_assert_init kernel/time/timer.c:725 [inline]
 debug_assert_init kernel/time/timer.c:770 [inline]
 del_timer+0x7c/0x120 kernel/time/timer.c:1192
 try_to_grab_pending+0x37e/0x910 kernel/workqueue.c:1250
 __cancel_work_timer+0xc4/0x520 kernel/workqueue.c:3085
 cancel_delayed_work_sync+0x1b/0x20 kernel/workqueue.c:3258
 strp_done+0x5d/0xf0 net/strparser/strparser.c:527
 sk_psock_destroy_deferred+0x3a/0x6c0 net/core/skmsg.c:558
 process_one_work+0x989/0x1790 kernel/workqueue.c:2268
 worker_thread+0x98/0xe40 kernel/workqueue.c:2414
 kthread+0x354/0x420 kernel/kthread.c:254
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..