======================================
| [   19.395574][    C3] 1 lock held by swapper/3/0:
| [ 19.395851][ C3] #0: ffffffffa2f749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   19.396249][    C3]
| [   19.396249][    C3] stack backtrace:
[   19.396518][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.396520][    C3] Call Trace:
[   19.396521][    C3]  <IRQ>
[ 19.396525][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.396534][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 19.396543][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 19.396551][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 19.396561][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 19.396569][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 19.396575][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 19.396581][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 19.396589][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 19.396593][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 19.396599][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.396609][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 19.396613][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 19.396620][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 19.396625][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 19.396629][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 19.396635][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 19.396642][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 19.396650][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 19.396655][ 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) 
[ 19.396664][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.396671][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 19.396676][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 19.396680][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 19.396689][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.396695][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.396701][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.396705][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.396709][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.396717][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 19.396722][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.396727][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.396736][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 19.396746][ C3] __put_net (net/core/net_namespace.c:732) 
[ 19.396751][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 19.396756][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.396759][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.396763][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.396767][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 19.396771][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.396775][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 19.396778][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.396783][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 19.396788][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 19.396792][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 19.396795][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 19.396797][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   19.396801][    C3]  </IRQ>
[   19.396802][    C3]  <TASK>
[ 19.396803][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.396806][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.396810][ 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
[   19.396813][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   19.396817][    C3] RAX: 0000000000048e5f RBX: 1ffff9200002afc1 RCX: ffffffffa1f5ba19
[   19.396819][    C3] RDX: 0000000000000000 RSI: ffffffffa2a87785 RDI: ffffffffa2251260
[   19.396821][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   19.396823][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   19.396825][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 19.396829][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 19.396834][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.396836][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.396839][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.396843][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 19.396847][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 19.396852][ C3] do_idle (kernel/sched/idle.c:325) 
[ 19.396856][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.396859][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.396863][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 19.396869][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   19.417583][    C3] RCU nest depth: 0, expected: 0
| [   19.417778][    C3] INFO: lockdep is turned off.
| [   19.418004][    C3] Preemption disabled at:
| [ 19.418007][ C3] 0x0 
[   19.418625][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.418627][    C3] Call Trace:
[   19.418629][    C3]  <IRQ>
[ 19.418633][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.418641][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 19.418649][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 19.418654][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 19.418657][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 19.418662][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.418669][ 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) 
[ 19.418674][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 19.418677][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 19.418682][ 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) 
[ 19.418686][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 19.418689][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 19.418694][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 19.418697][ 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) 
[ 19.418703][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.418707][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 19.418710][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 19.418714][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 19.418718][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.418722][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.418726][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.418728][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.418730][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.418735][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 19.418738][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.418741][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.418746][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 19.418753][ C3] __put_net (net/core/net_namespace.c:732) 
[ 19.418756][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 19.418760][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.418763][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.418767][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.418772][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 19.418776][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.418781][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 19.418784][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.418789][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 19.418793][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 19.418798][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 19.418801][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 19.418803][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   19.418806][    C3]  </IRQ>
[   19.418808][    C3]  <TASK>
[ 19.418809][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.418812][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.418816][ 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
[   19.418819][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   19.418822][    C3] RAX: 0000000000048e5f RBX: 1ffff9200002afc1 RCX: ffffffffa1f5ba19
[   19.418825][    C3] RDX: 0000000000000000 RSI: ffffffffa2a87785 RDI: ffffffffa2251260
[   19.418827][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   19.418828][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   19.418830][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 19.418834][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 19.418839][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.418841][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.418844][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.418847][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 19.418852][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 19.418857][ C3] do_idle (kernel/sched/idle.c:325) 
[ 19.418861][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.418864][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.418868][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 19.418873][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   22.613877][    C0] INFO: lockdep is turned off.
| [   22.614229][    C0] Preemption disabled at:
| [ 22.614232][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
| [   22.615009][    C0] Tainted: [W]=WARN
[   22.615011][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.615014][    C0] Call Trace:
[   22.615016][    C0]  <IRQ>
[ 22.615020][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 22.615028][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 22.615038][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 22.615043][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 22.615048][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 22.615055][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 22.615065][ 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) 
[ 22.615073][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 22.615077][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 22.615083][ 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) 
[ 22.615091][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 22.615096][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 22.615104][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 22.615108][ 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) 
[ 22.615115][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 22.615121][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 22.615125][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 22.615130][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 22.615136][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 22.615141][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 22.615147][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 22.615151][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 22.615155][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.615162][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 22.615166][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 22.615171][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 22.615176][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 22.615183][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 22.615189][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 22.615197][ C0] __put_net (net/core/net_namespace.c:732) 
[ 22.615202][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 22.615209][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 22.615214][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 22.615223][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 22.615230][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 22.615237][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.615246][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 22.615252][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 22.615261][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 22.615266][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 22.615270][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   22.615276][    C0]  </IRQ>
[   22.615277][    C0]  <TASK>
[ 22.615280][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 22.615285][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 22.615291][ 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
[   22.615296][    C0] RSP: 0018:ffffffffa2c07df8 EFLAGS: 00000246
[   22.615302][    C0] RAX: 0000000000000000 RBX: 1ffffffff4580fc3 RCX: ffffffffa1f5ba19
[   22.615306][    C0] RDX: ffffed1006c0667b RSI: ffffffffa22511e0 RDI: ffffffff9f78633f
[   22.615309][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c0667a
[   22.615312][    C0] R10: ffff8880360333d3 R11: ffff88800a94cb58 R12: 0000000000000000
[   22.615315][    C0] R13: ffffffffa2c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 22.615322][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 22.615328][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.615335][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 22.615339][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 22.615343][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.615349][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 22.615357][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 22.615367][ C0] do_idle (kernel/sched/idle.c:325) 
[ 22.615374][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 22.615380][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 22.615385][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 22.615392][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 22.615399][ 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