======================================
| [ 650.580414][ C1] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [  650.580417][    C1]
| [  650.580417][    C1]
| [  650.580417][    C1] stack backtrace:
[  650.580425][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  650.580427][    C1] Call Trace:
[  650.580430][    C1]  <IRQ>
[ 650.580432][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 650.580438][ C1] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4127) 
[ 650.580443][ C1] mark_lock_irq (kernel/locking/lockdep.c:4295) 
[ 650.580451][ C1] mark_lock (kernel/locking/lockdep.c:4753) 
[ 650.580455][ C1] mark_usage (kernel/locking/lockdep.c:4639) 
[ 650.580457][ C1] __lock_acquire (kernel/locking/lockdep.c:5191) 
[ 650.580462][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 650.580464][ C1] ? console_lock_spinning_enable (kernel/printk/printk.c:1924) 
[ 650.580468][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 650.580472][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 650.580474][ C1] ? console_lock_spinning_enable (kernel/printk/printk.c:1924) 
[ 650.580478][ C1] console_lock_spinning_enable (kernel/printk/printk.c:1925) 
[ 650.580481][ C1] ? console_lock_spinning_enable (kernel/printk/printk.c:1924) 
[ 650.580484][ C1] console_emit_next_record (kernel/printk/printk.c:3050 (discriminator 3) kernel/printk/printk.c:3137 (discriminator 3)) 
[ 650.580488][ C1] ? __pfx_console_emit_next_record (kernel/printk/printk.c:3082) 
[ 650.580493][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 650.580497][ C1] console_flush_all (kernel/printk/printk.c:3227) 
[ 650.580502][ C1] ? __pfx_console_flush_all (kernel/printk/printk.c:3188) 
[ 650.580505][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 650.580510][ C1] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 650.580513][ C1] ? __pfx_console_unlock (kernel/printk/printk.c:3320) 
[ 650.580517][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 650.580519][ C1] ? irq_work_single (kernel/irq_work.c:221) 
[ 650.580522][ C1] ? irq_work_single (kernel/irq_work.c:221) 
[ 650.580526][ C1] wake_up_klogd_work_func (kernel/printk/printk.c:4527) 
[ 650.580529][ C1] irq_work_single (kernel/irq_work.c:221) 
[ 650.580533][ C1] irq_work_run_list (kernel/irq_work.c:251 (discriminator 3)) 
[ 650.580535][ C1] ? irq_work_tick (kernel/irq_work.c:277) 
[ 650.580537][ C1] update_process_times (kernel/time/timer.c:2478) 
[ 650.580540][ C1] tick_nohz_handler (kernel/time/tick-sched.c:277 kernel/time/tick-sched.c:297) 
[ 650.580543][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 650.580547][ C1] __run_hrtimer (kernel/time/hrtimer.c:1761) 
[ 650.580549][ C1] ? __pfx_tick_nohz_handler (kernel/time/tick-sched.c:285) 
[ 650.580553][ C1] __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1805) 
[ 650.580556][ C1] ? hrtimer_interrupt (kernel/time/hrtimer.c:640 (discriminator 2) kernel/time/hrtimer.c:1869 (discriminator 2)) 
[ 650.580560][ C1] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1795) 
[ 650.580562][ C1] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 650.580570][ C1] hrtimer_interrupt (kernel/time/hrtimer.c:1890) 
[ 650.580573][ C1] ? __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 650.580581][ C1] __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1039 arch/x86/kernel/apic/apic.c:1056) 
[ 650.580584][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  650.580587][    C1]  </IRQ>
[  650.580588][    C1]  <TASK>
[ 650.580590][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 650.580593][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 650.580596][ C1] Code: 34 a8 00 e9 c3 6a 02 00 0f 1f 00 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 c3 d1 1b 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	34 a8                	xor    $0xa8,%al
   2:	00 e9                	add    %ch,%cl
   4:	c3                   	ret
   5:	6a 02                	push   $0x2
   7:	00 0f                	add    %cl,(%rdi)
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  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 c3 d1 1b 00 	verw   0x1bd1c3(%rip)        # 0x1bd1eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[  650.580599][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000246
[  650.580602][    C1] RAX: 000000000104822d RBX: 1ffff92000026fc1 RCX: ffffffffb40d83f9
[  650.580604][    C1] RDX: 0000000000000000 RSI: ffffffffb4b0e27c RDI: ffffffffb4459c60
[  650.580606][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006016252
[  650.580607][    C1] R10: ffff8880300b1293 R11: ffff8880300b6958 R12: 0000000000000000
[  650.580609][    C1] R13: ffff888001ba8040 R14: dffffc0000000000 R15: 0000000000000000
[ 650.580613][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 650.580618][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:757) 
[ 650.580621][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123) 
[ 650.580624][ C1] cpuidle_idle_call (kernel/sched/idle.c:191) 
[ 650.580628][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:173) 
[ 650.580633][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 650.580637][ C1] do_idle (kernel/sched/idle.c:330) 
[ 650.580641][ C1] cpu_startup_entry (kernel/sched/idle.c:427 (discriminator 1)) 
[ 650.580645][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 650.580649][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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