------------[ cut here ]------------
AppArmor WARN cred_label: ((!blob)): 
WARNING: CPU: 0 PID: 12 at security/apparmor/include/cred.h:30 cred_label security/apparmor/include/cred.h:30 [inline]
WARNING: CPU: 0 PID: 12 at security/apparmor/include/cred.h:30 apparmor_cred_free+0x12f/0x1a0 security/apparmor/lsm.c:62
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.0.0-rc1-next-20190114 #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue:            (null) (events)
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x48 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:cred_label security/apparmor/include/cred.h:30 [inline]
RIP: 0010:apparmor_cred_free+0x12f/0x1a0 security/apparmor/lsm.c:62
Code: 7c 88 48 c7 c7 c0 d1 7c 88 e8 ed 6f f2 fd 0f 0b eb a9 e8 14 46 29 fe 48 c7 c6 80 e1 7c 88 48 c7 c7 c0 d1 7c 88 e8 d1 6f f2 fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 80 38 00 75 4a 4c 8b 2c 25 00
RSP: 0018:ffff8880ae6079f8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff81688726 RDI: 0000000000000006
RBP: ffff8880ae607a18 R08: ffff8880a9498300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809f768b00
R13: ffff88809f768b00 R14: ffff88809f768b88 R15: dffffc0000000000
 security_cred_free+0x4b/0xf0 security/security.c:1490
 put_cred_rcu+0x21f/0x6e0 kernel/cred.c:118
 __rcu_reclaim kernel/rcu/rcu.h:240 [inline]
 rcu_do_batch kernel/rcu/tree.c:2486 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2799 [inline]
 rcu_core+0xc4a/0x1680 kernel/rcu/tree.c:2780
 __do_softirq+0x30b/0xb11 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:192
Code: c0 c0 83 92 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d c5 5c 9c 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 52 1f 62 f9 65 8b 05 bb c6 0b 78 85 c0 74 06 41
RSP: 0018:ffff8880a94a7998 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1325078 RBX: 1ffff11015294f3c RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9498b7c
RBP: ffff8880a94a79a0 R08: ffff8880a9498300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ae62ce00
R13: ffff888091016700 R14: ffff888098d586c0 R15: ffff8880a94a7a60
 finish_lock_switch kernel/sched/core.c:2584 [inline]
 finish_task_switch+0x1e9/0xac0 kernel/sched/core.c:2684
 context_switch kernel/sched/core.c:2837 [inline]
 __schedule+0x89f/0x1e60 kernel/sched/core.c:3475
 schedule+0xfe/0x350 kernel/sched/core.c:3519
 worker_thread+0x3bc/0x14a0 kernel/workqueue.c:2317
 kthread+0x357/0x430 kernel/kthread.c:247
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..