------------[ cut here ]------------ AppArmor WARN cred_label: ((!blob)): WARNING: CPU: 1 PID: 3865 at security/apparmor/include/cred.h:30 cred_label security/apparmor/include/cred.h:30 [inline] WARNING: CPU: 1 PID: 3865 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: 1 PID: 3865 Comm: udevd Not tainted 5.0.0-rc2-next-20190115 #12 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:ffff8880ae7079f8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff81688726 RDI: 0000000000000006 RBP: ffff8880ae707a18 R08: ffff888097f50240 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809d3c3f00 R13: ffff88809d3c3f00 R14: ffff88809d3c3f88 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:766 [inline] RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline] RIP: 0010:set_root+0x201/0x800 fs/namei.c:818 Code: b0 83 92 89 48 c1 e8 03 80 3c 18 00 0f 85 f5 05 00 00 48 83 3d 1f 81 bc 07 00 0f 84 bb 04 00 00 e8 b4 32 ac ff 4c 89 e7 57 9d <0f> 1f 44 00 00 e8 a5 32 ac ff 48 8d 45 90 49 8d 77 40 48 89 c2 48 RSP: 0018:ffff888097f5f6e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff888097f50240 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81d6029c RDI: 0000000000000293 RBP: ffff888097f5f7e0 R08: ffff888097f50240 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000293 R13: 0000000000000200 R14: ffff888097f5fbe0 R15: ffff888098a14100 path_init+0x1510/0x1ef0 fs/namei.c:2207 path_openat+0x1be/0x5660 fs/namei.c:3532 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_sys_open+0x59a/0x7c0 fs/open.c:1063 __do_sys_open fs/open.c:1081 [inline] __se_sys_open fs/open.c:1076 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1076 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6c9f9c6120 Code: 48 8b 15 1b 4d 2b 00 f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 83 3d d5 a4 2b 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e 8c 01 00 48 89 04 24 RSP: 002b:00007ffd2e5faba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000d75350 RCX: 00007f6c9f9c6120 RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffd2e5fac80 RBP: 00007ffd2e5fac20 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 000000000041f57a R14: 0000000000daf2c0 R15: 0000000000000ae8 Kernel Offset: disabled Rebooting in 86400 seconds..