======================================
| [ 35.673138][ C3] common_startup_64 (arch/x86/kernel/head_64.S:421) 
| [   35.673276][    C3]
| [   35.673345][    C3]
| [   35.673345][    C3] stack backtrace:
[   35.673811][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.674230][    C3] Call Trace:
[   35.674337][    C3]  <IRQ>
[ 35.674413][ C3] dump_stack_lvl (lib/dump_stack.c:117) 
[ 35.674554][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 35.674727][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:421) 
[ 35.674869][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 35.675128][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 35.675265][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 35.675419][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 35.675556][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 35.675706][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 35.675928][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.676078][ C3] ? save_trace (kernel/locking/lockdep.c:586) 
[ 35.676216][ C3] mark_lock (kernel/locking/lockdep.c:4678) 
[ 35.676341][ C3] mark_usage (kernel/locking/lockdep.c:4567) 
[ 35.676444][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 35.676682][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 35.676821][ C3] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 35.676967][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 35.677108][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 35.677337][ C3] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 35.677477][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 35.677617][ C3] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 35.677762][ C3] _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:177 kernel/locking/spinlock.c:252) 
[ 35.677985][ C3] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 35.678135][ C3] ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 35.678283][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 35.678419][ C3] ndisc_send_ns (net/ipv6/ndisc.c:658) 
[ 35.678555][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 35.678856][ C3] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653) 
[ 35.678995][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 35.679218][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 35.679355][ C3] ndisc_solicit (net/ipv6/ndisc.c:754 (discriminator 2)) 
[ 35.679504][ C3] ? __pfx_ndisc_solicit (net/ipv6/ndisc.c:736) 
[ 35.679640][ C3] ? do_raw_write_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qrwlock.h:98 kernel/locking/spinlock_debug.c:211) 
[ 35.679780][ C3] ? neigh_probe (net/core/neighbour.c:1074) 
[ 35.679997][ C3] neigh_probe (net/core/neighbour.c:1075) 
[ 35.680106][ C3] neigh_timer_handler (net/core/neighbour.c:1163) 
[ 35.680246][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.680391][ C3] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) 
[ 35.680611][ C3] call_timer_fn (kernel/time/timer.c:1793) 
[ 35.680762][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.680982][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.681128][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 35.681276][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 35.681386][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 35.681524][ C3] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) 
[ 35.681750][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 35.681890][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 35.682031][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.682181][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 35.682330][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 35.682563][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 35.682699][ C3] __do_softirq (kernel/softirq.c:554) 
[ 35.682843][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 35.683024][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   35.683162][    C3]  </IRQ>
[   35.683238][    C3]  <TASK>
[ 35.683408][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 35.683582][ C3] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) 
[ 35.683738][ C3] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d d3 eb 32 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
All code
========
   0:	4c 01 c7             	add    %r8,%rdi
   3:	4c 29 c2             	sub    %r8,%rdx
   6:	e9 72 ff ff ff       	jmp    0xffffffffffffff7d
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d d3 eb 32 00 	verw   0x32ebd3(%rip)        # 0x32ebfb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	fa                   	cli		<-- trapping instruction
  2b:	c3                   	ret
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  37:	00 00 00 00 
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	fa                   	cli
   1:	c3                   	ret
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   35.684330][    C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246
[   35.684673][    C3] RAX: 000000000008354d RBX: 1ffff9200002dfc1 RCX: ffffffffb5732ea5
[   35.684879][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb2eac1d4
[   35.685084][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ef709c
[   35.685377][    C3] R10: ffff88802f7b84e3 R11: ffff88802f7bde40 R12: 0000000000000000
[   35.685584][    C3] R13: ffff888001b98040 R14: dffffc0000000000 R15: 0000000000000000
[ 35.685873][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) 
[ 35.686013][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:192) 
[ 35.686171][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 35.686310][ C3] cpuidle_idle_call (kernel/sched/idle.c:192) 
[ 35.686444][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 35.686675][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 35.686811][ C3] do_idle (kernel/sched/idle.c:332) 
[ 35.686919][ C3] cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1)) 
[ 35.687064][ C3] start_secondary (arch/x86/kernel/smpboot.c:201 arch/x86/kernel/smpboot.c:281) 
[ 35.687290][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:231) 


Finger prints:
common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock