======================================
| [ 749.445659][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [  749.445663][    C3]
| [  749.445665][    C3]
| [  749.445665][    C3] stack backtrace:
[  749.445677][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  749.445681][    C3] Call Trace:
[  749.445684][    C3]  <IRQ>
[ 749.445691][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 749.445699][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4127) 
[ 749.445707][ C3] mark_lock_irq (kernel/locking/lockdep.c:4295) 
[ 749.445719][ C3] mark_lock (kernel/locking/lockdep.c:4753) 
[ 749.445726][ C3] mark_usage (kernel/locking/lockdep.c:4639) 
[ 749.445731][ C3] __lock_acquire (kernel/locking/lockdep.c:5191) 
[ 749.445739][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 749.445743][ C3] ? console_lock_spinning_enable (kernel/printk/printk.c:1924) 
[ 749.445749][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 749.445756][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 749.445758][ C3] ? console_lock_spinning_enable (kernel/printk/printk.c:1924) 
[ 749.445762][ C3] console_lock_spinning_enable (kernel/printk/printk.c:1925) 
[ 749.445765][ C3] ? console_lock_spinning_enable (kernel/printk/printk.c:1924) 
[ 749.445768][ C3] console_emit_next_record (kernel/printk/printk.c:3050 (discriminator 3) kernel/printk/printk.c:3137 (discriminator 3)) 
[ 749.445773][ C3] ? devkmsg_read (kernel/printk/printk.c:3082) 
[ 749.445777][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 749.445782][ C3] console_flush_all (kernel/printk/printk.c:3227) 
[ 749.445786][ C3] ? console_emit_next_record (kernel/printk/printk.c:3188) 
[ 749.445790][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 749.445794][ C3] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 749.445797][ C3] ? console_flush_all (kernel/printk/printk.c:3320) 
[ 749.445800][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 749.445804][ C3] ? irq_work_single (kernel/irq_work.c:222) 
[ 749.445807][ C3] ? irq_work_single (kernel/irq_work.c:222) 
[ 749.445811][ C3] wake_up_klogd_work_func (kernel/printk/printk.c:4529) 
[ 749.445815][ C3] irq_work_single (kernel/irq_work.c:222) 
[ 749.445819][ C3] irq_work_run_list (kernel/irq_work.c:251 (discriminator 3)) 
[ 749.445822][ C3] ? irq_work_tick (kernel/irq_work.c:277) 
[ 749.445825][ C3] update_process_times (kernel/time/timer.c:2478) 
[ 749.445829][ C3] tick_nohz_handler (kernel/time/tick-sched.c:277 kernel/time/tick-sched.c:297) 
[ 749.445832][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 749.445836][ C3] __run_hrtimer (kernel/time/hrtimer.c:1761) 
[ 749.445840][ C3] ? tick_do_update_jiffies64.part.0 (kernel/time/tick-sched.c:285) 
[ 749.445844][ C3] __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1805) 
[ 749.445848][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:640 (discriminator 2) kernel/time/hrtimer.c:1869 (discriminator 2)) 
[ 749.445851][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1795) 
[ 749.445854][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 749.445861][ C3] hrtimer_interrupt (kernel/time/hrtimer.c:1890) 
[ 749.445864][ C3] ? lockdep_softirqs_on (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:4558) 
[ 749.445870][ C3] __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1057) 
[ 749.445873][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  749.445877][    C3]  </IRQ>
[  749.445878][    C3]  <TASK>
[ 749.445880][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 749.445883][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 749.445887][ C3] Code: 48 8b 3d 74 ab 05 02 e8 1f 00 00 00 48 2b 05 c8 54 86 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d b3 1d 0c 00 fb f4 <c3> 66 0f 1f 00 41 54 55 53 48 89 fb 48 83 ec 10 8b 17 83 e2 fe 41
All code
========
   0:	48 8b 3d 74 ab 05 02 	mov    0x205ab74(%rip),%rdi        # 0x205ab7b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 c8 54 86 00 	sub    0x8654c8(%rip),%rax        # 0x8654db
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d b3 1d 0c 00 	verw   0xc1db3(%rip)        # 0xc1ddb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 0f 1f 00          	nopw   (%rax)
  2f:	41 54                	push   %r12
  31:	55                   	push   %rbp
  32:	53                   	push   %rbx
  33:	48 89 fb             	mov    %rdi,%rbx
  36:	48 83 ec 10          	sub    $0x10,%rsp
  3a:	8b 17                	mov    (%rdi),%edx
  3c:	83 e2 fe             	and    $0xfffffffe,%edx
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 54                	push   %r12
   7:	55                   	push   %rbp
   8:	53                   	push   %rbx
   9:	48 89 fb             	mov    %rdi,%rbx
   c:	48 83 ec 10          	sub    $0x10,%rsp
  10:	8b 17                	mov    (%rdi),%edx
  12:	83 e2 fe             	and    $0xfffffffe,%edx
  15:	41                   	rex.B
[  749.445891][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000206
[  749.445894][    C3] RAX: 0000000000ab71c3 RBX: 1ffff9200002afc1 RCX: ffffffff92bd21c5
[  749.445897][    C3] RDX: 0000000000000000 RSI: ffffffff933ea64b RDI: ffffffff92e57960
[  749.445899][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c76252
[  749.445901][    C3] R10: ffff8880363b1293 R11: ffff8880363b6958 R12: 0000000000000000
[  749.445903][    C3] R13: ffff888001ab45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 749.445907][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 749.445912][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:757) 
[ 749.445916][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123) 
[ 749.445919][ C3] cpuidle_idle_call (kernel/sched/idle.c:191) 
[ 749.445922][ C3] ? arch_cpu_idle_exit+0x40/0x40 
[ 749.445925][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 749.445929][ C3] do_idle (kernel/sched/idle.c:330) 
[ 749.445932][ C3] cpu_startup_entry (kernel/sched/idle.c:427 (discriminator 1)) 
[ 749.445935][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 749.445938][ C3] ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:233) 


Finger prints:
common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage