------------[ cut here ]------------ AppArmor WARN cred_label: ((!blob)): WARNING: CPU: 0 PID: 4189 at security/apparmor/include/cred.h:30 cred_label security/apparmor/include/cred.h:30 [inline] WARNING: CPU: 0 PID: 4189 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: 4189 Comm: kworker/u4:6 Not tainted 5.0.0-rc2-next-20190115 #12 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker Call Trace: __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 40 d2 7c 88 e8 5d 69 f2 fd 0f 0b eb a9 e8 64 40 29 fe 48 c7 c6 00 e2 7c 88 48 c7 c7 40 d2 7c 88 e8 41 69 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: ffff888094426340 R09: ffff888094426c08 R10: ffff888094426340 R11: 0000000000000000 R12: ffff88809cf7ba00 R13: ffff88809cf7ba00 R14: ffff88809cf7ba88 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 RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101 Code: 46 df ff ff 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 68 b8 7f 7e 81 e2 00 01 1f 00 75 2b 8b 90 e0 12 00 00 <83> fa 02 75 20 48 8b 88 e8 12 00 00 8b 80 e4 12 00 00 48 8b 11 48 RSP: 0018:ffff88808ff3f8a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff888094426340 RBX: ffff88809f298080 RCX: ffffffff87d52b42 RDX: 0000000000000000 RSI: ffffffff87d52bea RDI: 0000000000000007 RBP: ffff88808ff3f8a8 R08: ffff888094426340 R09: ffffed1015cc5b90 R10: ffffed1015cc5b8f R11: ffff8880ae62dc7b R12: ffff8880842073e0 R13: 0000000000000000 R14: 000000000000033c R15: dffffc0000000000 rcu_read_unlock include/linux/rcupdate.h:658 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:423 [inline] batadv_nc_worker+0x2ca/0x920 net/batman-adv/network-coding.c:730 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296 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..