======================================
| [   44.170809][    C0]
| [   44.170809][    C0]
| [   44.170809][    C0] stack backtrace:
| [   44.170815][    C0] Tainted: [W]=WARN
[   44.170816][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   44.170818][    C0] Call Trace:
[   44.170819][    C0]  <IRQ>
[   44.170820][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   44.170825][    C0]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   44.170835][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   44.170836][    C0]  ? add_lock_to_list (./include/linux/find.h:391 kernel/locking/lockdep.c:1419 kernel/locking/lockdep.c:1450)
[   44.170839][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   44.170841][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   44.170843][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   44.170845][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   44.170847][    C0]  ? console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   44.170849][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.170851][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   44.170853][    C0]  console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   44.170855][    C0]  ? console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   44.170856][    C0]  console_emit_next_record (kernel/printk/printk.c:3177)
[   44.170858][    C0]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   44.170860][    C0]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   44.170862][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.170863][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   44.170865][    C0]  console_flush_one_record (kernel/printk/printk.c:3268)
[   44.170867][    C0]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   44.170869][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   44.170871][    C0]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   44.170873][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   44.170874][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.170875][    C0]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   44.170877][    C0]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   44.170879][    C0]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   44.170880][    C0]  vprintk_emit (kernel/printk/printk.c:2479)
[   44.170882][    C0]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   44.170883][    C0]  ? clocksource_watchdog.part.0 (kernel/time/clocksource.c:531 (discriminator 1) kernel/time/clocksource.c:608 (discriminator 1) kernel/time/clocksource.c:667 (discriminator 1))
[   44.170885][    C0]  _printk (kernel/printk/printk.c:2504)
[   44.170887][    C0]  ? snapshot_read.cold (user.c:?)
[   44.170889][    C0]  ? clocksource_watchdog.part.0 (kernel/time/clocksource.c:531 (discriminator 1) kernel/time/clocksource.c:608 (discriminator 1) kernel/time/clocksource.c:667 (discriminator 1))
[   44.170890][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   44.170892][    C0]  clocksource_watchdog.part.0.cold (kernel/time/clocksource.c:589 (discriminator 10) kernel/time/clocksource.c:632 (discriminator 10) kernel/time/clocksource.c:667 (discriminator 10))
[   44.170894][    C0]  ? clocksource_watchdog.part.0 (./include/linux/find.h:67 (discriminator 4))
[   44.170895][    C0]  ? clocksource_watchdog.part.0 (./include/linux/find.h:67 (discriminator 4))
[   44.170897][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   44.170899][    C0]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 16) arch/x86/kernel/apic/apic.c:1062 (discriminator 16))
[   44.170900][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   44.170903][    C0]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:219 kernel/locking/spinlock.c:229)
[   44.170905][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   44.170907][    C0]  ? clocksource_watchdog.part.0 (./include/linux/find.h:67 (discriminator 4))
[   44.170909][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   44.170911][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   44.170913][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   44.170916][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   44.170918][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   44.170920][    C0]  ? handle_softirqs (./arch/x86/include/asm/bitops.h:312 kernel/softirq.c:633)
[   44.170921][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.170922][    C0]  handle_softirqs (kernel/softirq.c:645)
[   44.170924][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   44.170926][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   44.170928][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   44.170929][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   44.170931][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   44.170932][    C0]  </IRQ>
[   44.170933][    C0]  <TASK>
[   44.170933][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   44.170935][    C0] RIP: 0010:free_percpu (mm/percpu.c:2241)
[   44.170937][    C0] Code: e9 fe fa ff ff 4c 89 ef 89 04 24 e8 d6 60 1a 00 8b 04 24 e9 4d fc ff ff 0f 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <0f> 1f 44 00 00 48 85 ff 74 05 e9 7d f3 ff ff c3 90 66 66 2e 0f 1f
All code
========
   0:	e9 fe fa ff ff       	jmp    0xfffffffffffffb03
   5:	4c 89 ef             	mov    %r13,%rdi
   8:	89 04 24             	mov    %eax,(%rsp)
   b:	e8 d6 60 1a 00       	call   0x1a60e6
  10:	8b 04 24             	mov    (%rsp),%eax
  13:	e9 4d fc ff ff       	jmp    0xfffffffffffffc65
  18:	0f 1f 00             	nopl   (%rax)
  1b:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  22:	00 00 00 00 
  26:	f3 0f 1e fa          	endbr64
  2a:*	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)		<-- trapping instruction
  2f:	48 85 ff             	test   %rdi,%rdi
  32:	74 05                	je     0x39
  34:	e9 7d f3 ff ff       	jmp    0xfffffffffffff3b6
  39:	c3                   	ret
  3a:	90                   	nop
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	48 85 ff             	test   %rdi,%rdi
   8:	74 05                	je     0xf
   a:	e9 7d f3 ff ff       	jmp    0xfffffffffffff38c
   f:	c3                   	ret
  10:	90                   	nop
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[   44.170939][    C0] RSP: 0018:ffa000000258fde0 EFLAGS: 00000246
[   44.170941][    C0] RAX: dffffc0000000000 RBX: ff11000001074cc0 RCX: 0000000000000001
[   44.170943][    C0] RDX: 1fe220000020e9e8 RSI: 0000000000000004 RDI: 00c0ffff2b621d10
[   44.170944][    C0] RBP: ff11000001074f40 R08: ffffffff92aa4f2a R09: 1fe220000020e998
[   44.170944][    C0] R10: ffe21c000020e999 R11: ffe21c000020e999 R12: ff1100000f3723c0
[   44.170945][    C0] R13: ff1100000f3723c0 R14: ff11000001074cc0 R15: ff1100006c038fc0
[   44.170946][    C0]  ? finish_task_switch.isra.0 (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 ./include/linux/sched/mm.h:54 ./include/linux/sched/mm.h:83 ./include/linux/sched/mm.h:110 kernel/sched/core.c:5402)
[   44.170948][    C0]  __mmdrop (./include/linux/mm_types.h:1646 kernel/fork.c:733)
[   44.170950][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.170951][    C0]  finish_task_switch.isra.0 (./include/linux/sched/mm.h:55 ./include/linux/sched/mm.h:83 ./include/linux/sched/mm.h:110 kernel/sched/core.c:5402)
[   44.170953][    C0]  schedule_tail (kernel/sched/core.c:5442)
[   44.170955][    C0]  ret_from_fork (arch/x86/kernel/process.c:154)
[   44.170956][    C0]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   44.170958][    C0]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   44.170965][    C0]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   44.170984][    C0] softirqs last disabled at (29): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   44.170986][    C0] Preemption disabled at:
| [   44.170986][    C0] 0x0
| [   44.170991][    C0] Tainted: [W]=WARN
[   44.170992][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   44.170993][    C0] Call Trace:
[   44.170993][    C0]  <IRQ>
[   44.170994][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   44.170996][    C0]  __might_resched.cold (kernel/sched/core.c:9234)
[   44.170999][    C0]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   44.171002][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171003][    C0]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   44.171004][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   44.171006][    C0]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   44.171008][    C0]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   44.171010][    C0]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   44.171013][    C0]  put_chars (drivers/char/virtio_console.c:1176)
[   44.171014][    C0]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   44.171016][    C0]  ? mark_lock (kernel/locking/lockdep.c:4769)
[   44.171018][    C0]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   44.171021][    C0]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   44.171023][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171024][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171025][    C0]  console_emit_next_record (kernel/printk/printk.c:3183)
[   44.171027][    C0]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   44.171029][    C0]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   44.171031][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171032][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   44.171034][    C0]  console_flush_one_record (kernel/printk/printk.c:3268)
[   44.171036][    C0]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   44.171038][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   44.171040][    C0]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   44.171042][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   44.171044][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171045][    C0]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   44.171047][    C0]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   44.171048][    C0]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   44.171050][    C0]  vprintk_emit (kernel/printk/printk.c:2479)
[   44.171051][    C0]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   44.171053][    C0]  ? clocksource_watchdog.part.0 (kernel/time/clocksource.c:531 (discriminator 1) kernel/time/clocksource.c:608 (discriminator 1) kernel/time/clocksource.c:667 (discriminator 1))
[   44.171054][    C0]  _printk (kernel/printk/printk.c:2504)
[   44.171056][    C0]  ? snapshot_read.cold (user.c:?)
[   44.171058][    C0]  ? clocksource_watchdog.part.0 (kernel/time/clocksource.c:531 (discriminator 1) kernel/time/clocksource.c:608 (discriminator 1) kernel/time/clocksource.c:667 (discriminator 1))
[   44.171059][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   44.171062][    C0]  clocksource_watchdog.part.0.cold (kernel/time/clocksource.c:589 (discriminator 10) kernel/time/clocksource.c:632 (discriminator 10) kernel/time/clocksource.c:667 (discriminator 10))
[   44.171063][    C0]  ? clocksource_watchdog.part.0 (./include/linux/find.h:67 (discriminator 4))
[   44.171065][    C0]  ? clocksource_watchdog.part.0 (./include/linux/find.h:67 (discriminator 4))
[   44.171066][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   44.171068][    C0]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 16) arch/x86/kernel/apic/apic.c:1062 (discriminator 16))
[   44.171069][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   44.171072][    C0]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:219 kernel/locking/spinlock.c:229)
[   44.171074][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   44.171075][    C0]  ? clocksource_watchdog.part.0 (./include/linux/find.h:67 (discriminator 4))
[   44.171078][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   44.171079][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   44.171082][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   44.171084][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   44.171086][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   44.171088][    C0]  ? handle_softirqs (./arch/x86/include/asm/bitops.h:312 kernel/softirq.c:633)
[   44.171089][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171090][    C0]  handle_softirqs (kernel/softirq.c:645)
[   44.171092][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   44.171094][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   44.171096][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   44.171097][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   44.171099][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   44.171100][    C0]  </IRQ>
[   44.171101][    C0]  <TASK>
[   44.171101][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   44.171103][    C0] RIP: 0010:free_percpu (mm/percpu.c:2241)
[   44.171104][    C0] Code: e9 fe fa ff ff 4c 89 ef 89 04 24 e8 d6 60 1a 00 8b 04 24 e9 4d fc ff ff 0f 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <0f> 1f 44 00 00 48 85 ff 74 05 e9 7d f3 ff ff c3 90 66 66 2e 0f 1f
All code
========
   0:	e9 fe fa ff ff       	jmp    0xfffffffffffffb03
   5:	4c 89 ef             	mov    %r13,%rdi
   8:	89 04 24             	mov    %eax,(%rsp)
   b:	e8 d6 60 1a 00       	call   0x1a60e6
  10:	8b 04 24             	mov    (%rsp),%eax
  13:	e9 4d fc ff ff       	jmp    0xfffffffffffffc65
  18:	0f 1f 00             	nopl   (%rax)
  1b:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  22:	00 00 00 00 
  26:	f3 0f 1e fa          	endbr64
  2a:*	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)		<-- trapping instruction
  2f:	48 85 ff             	test   %rdi,%rdi
  32:	74 05                	je     0x39
  34:	e9 7d f3 ff ff       	jmp    0xfffffffffffff3b6
  39:	c3                   	ret
  3a:	90                   	nop
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	48 85 ff             	test   %rdi,%rdi
   8:	74 05                	je     0xf
   a:	e9 7d f3 ff ff       	jmp    0xfffffffffffff38c
   f:	c3                   	ret
  10:	90                   	nop
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[   44.171106][    C0] RSP: 0018:ffa000000258fde0 EFLAGS: 00000246
[   44.171107][    C0] RAX: dffffc0000000000 RBX: ff11000001074cc0 RCX: 0000000000000001
[   44.171108][    C0] RDX: 1fe220000020e9e8 RSI: 0000000000000004 RDI: 00c0ffff2b621d10
[   44.171108][    C0] RBP: ff11000001074f40 R08: ffffffff92aa4f2a R09: 1fe220000020e998
[   44.171109][    C0] R10: ffe21c000020e999 R11: ffe21c000020e999 R12: ff1100000f3723c0
[   44.171110][    C0] R13: ff1100000f3723c0 R14: ff11000001074cc0 R15: ff1100006c038fc0
[   44.171111][    C0]  ? finish_task_switch.isra.0 (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 ./include/linux/sched/mm.h:54 ./include/linux/sched/mm.h:83 ./include/linux/sched/mm.h:110 kernel/sched/core.c:5402)
[   44.171113][    C0]  __mmdrop (./include/linux/mm_types.h:1646 kernel/fork.c:733)
[   44.171114][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   44.171116][    C0]  finish_task_switch.isra.0 (./include/linux/sched/mm.h:55 ./include/linux/sched/mm.h:83 ./include/linux/sched/mm.h:110 kernel/sched/core.c:5402)
[   44.171118][    C0]  schedule_tail (kernel/sched/core.c:5442)
[   44.171119][    C0]  ret_from_fork (arch/x86/kernel/process.c:154)
[   44.171121][    C0]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   44.171122][    C0]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)


Finger prints:
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:console_lock_spinning_enable