======================================
| [   15.827827][    C3] 1 lock held by swapper/3/0:
| [ 15.828031][ C3] #0: ffffffffb55749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.828385][    C3]
| [   15.828385][    C3] stack backtrace:
[   15.828635][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.828638][    C3] Call Trace:
[   15.828640][    C3]  <IRQ>
[ 15.828642][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.828650][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.828657][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.828662][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.828669][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.828674][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.828678][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.828682][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.828688][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.828690][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.828694][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.828701][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.828703][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.828706][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.828710][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.828712][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 15.828715][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.828720][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.828726][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.828729][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.828735][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.828738][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.828741][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.828744][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.828749][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.828754][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.828757][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.828759][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.828762][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.828768][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.828771][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.828774][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.828780][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.828788][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.828793][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.828797][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.828800][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.828804][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.828809][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.828812][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.828816][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.828820][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.828825][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.828829][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.828834][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.828836][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.828839][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.828842][    C3]  </IRQ>
[   15.828844][    C3]  <TASK>
[ 15.828845][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.828848][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.828852][ C3] Code: 60 b8 00 e9 c3 57 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 75 13 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   15.828856][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   15.828859][    C3] RAX: 000000000003daeb RBX: 1ffff9200002afc1 RCX: ffffffffb455ba19
[   15.828861][    C3] RDX: 0000000000000000 RSI: ffffffffb5087785 RDI: ffffffffb4851260
[   15.828864][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   15.828867][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   15.828869][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 15.828877][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.828883][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.828886][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.828888][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.828892][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.828896][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.828902][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.828906][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.828909][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.828913][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.828918][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.845159][    C3] RCU nest depth: 0, expected: 0
| [   15.845347][    C3] INFO: lockdep is turned off.
| [   15.845530][    C3] Preemption disabled at:
| [ 15.845532][ C3] 0x0 
[   15.845855][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.845857][    C3] Call Trace:
[   15.845859][    C3]  <IRQ>
[ 15.845861][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.845873][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 15.845882][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.845887][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.845891][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.845896][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.845903][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.845908][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.845911][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.845917][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.845921][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.845925][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.845930][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.845934][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.845939][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.845944][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.845947][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.845951][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.845955][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.845959][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.845963][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.845965][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.845968][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.845973][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.845976][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.845979][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.845984][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.845991][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.845995][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.845999][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.846002][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.846006][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.846011][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.846015][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.846020][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.846024][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.846028][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.846033][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.846038][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.846040][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.846043][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.846046][    C3]  </IRQ>
[   15.846047][    C3]  <TASK>
[ 15.846049][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.846051][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.846055][ C3] Code: 60 b8 00 e9 c3 57 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 75 13 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   15.846058][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   15.846061][    C3] RAX: 000000000003daeb RBX: 1ffff9200002afc1 RCX: ffffffffb455ba19
[   15.846064][    C3] RDX: 0000000000000000 RSI: ffffffffb5087785 RDI: ffffffffb4851260
[   15.846065][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   15.846067][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   15.846069][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 15.846073][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.846078][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.846080][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.846083][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.846086][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.846091][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.846096][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.846100][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.846104][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.846107][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.846112][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.642846][    C0] INFO: lockdep is turned off.
| [   17.643188][    C0] Preemption disabled at:
| [ 17.643192][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
| [   17.643966][    C0] Tainted: [W]=WARN
[   17.643969][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.643972][    C0] Call Trace:
[   17.643975][    C0]  <IRQ>
[ 17.643978][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.643988][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 17.643999][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.644006][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.644011][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.644020][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.644031][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.644040][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.644045][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.644053][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.644062][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.644067][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.644076][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.644081][ C0] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.644090][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.644097][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.644102][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.644110][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.644117][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.644124][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.644129][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.644133][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.644137][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.644145][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.644150][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.644155][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.644160][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.644167][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.644174][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.644183][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.644189][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.644196][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.644201][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.644211][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.644218][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.644227][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.644237][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.644245][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.644254][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.644259][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.644263][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.644269][    C0]  </IRQ>
[   17.644271][    C0]  <TASK>
[ 17.644274][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.644279][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.644285][ C0] Code: 60 b8 00 e9 c3 57 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 75 13 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   17.644290][    C0] RSP: 0018:ffffffffb5207df8 EFLAGS: 00000246
[   17.644297][    C0] RAX: 0000000000000000 RBX: 1ffffffff6a40fc3 RCX: ffffffffb455ba19
[   17.644301][    C0] RDX: ffffed1006c0667b RSI: ffffffffb48511e0 RDI: ffffffffb1d8633f
[   17.644304][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c0667a
[   17.644308][    C0] R10: ffff8880360333d3 R11: ffffffffb7e8dc98 R12: 0000000000000000
[   17.644311][    C0] R13: ffffffffb521f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.644319][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.644325][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.644333][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.644338][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.644343][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.644349][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.644357][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.644369][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.644376][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.644382][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.644388][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.644394][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 17.644402][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__might_resched:down_write:simple_recursive_removal:debugfs_remove:ref_tracker_dir_exit
schedule_preempt_disabled:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal