======================================
| [   14.748915][    C3] 1 lock held by swapper/3/0:
| [ 14.749098][ C3] #0: ffffffffba774480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.749433][    C3]
| [   14.749433][    C3] stack backtrace:
[   14.749664][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.749666][    C3] Call Trace:
[   14.749668][    C3]  <IRQ>
[ 14.749670][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.749675][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.749680][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.749685][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.749691][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.749695][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.749699][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.749702][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.749708][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.749711][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.749715][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.749720][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.749723][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.749728][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.749731][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.749734][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 14.749738][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.749741][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.749746][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.749749][ 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:2333) 
[ 14.749754][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.749757][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.749759][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.749762][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.749765][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.749768][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.749771][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.749773][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.749776][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.749779][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 14.749782][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.749785][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.749789][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.749796][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.749799][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.749803][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.749805][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.749809][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.749813][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.749816][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.749820][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.749823][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.749827][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.749831][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 14.749835][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.749837][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.749840][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.749843][    C3]  </IRQ>
[   14.749844][    C3]  <TASK>
[ 14.749845][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.749848][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.749852][ C3] Code: b0 b8 00 c3 cc cc cc cc 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 a3 d0 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:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  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
[   14.749855][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   14.749858][    C3] RAX: 000000000003e2b1 RBX: 1ffff9200002afc1 RCX: ffffffffb9755a19
[   14.749861][    C3] RDX: 0000000000000000 RSI: ffffffffba285f31 RDI: ffffffffb9a50ce0
[   14.749862][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   14.749864][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   14.749866][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 14.749870][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.749875][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.749877][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.749879][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.749883][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.749887][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.749892][ C3] do_idle (kernel/sched/idle.c:325) 
[ 14.749896][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.749899][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.749903][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.749908][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.765203][    C3] RCU nest depth: 0, expected: 0
| [   14.765383][    C3] INFO: lockdep is turned off.
| [   14.765553][    C3] Preemption disabled at:
| [ 14.765555][ C3] 0x0 
[   14.765859][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.765860][    C3] Call Trace:
[   14.765862][    C3]  <IRQ>
[ 14.765863][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.765869][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 14.765874][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.765878][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.765880][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.765884][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.765889][ 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) 
[ 14.765894][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.765896][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.765900][ 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) 
[ 14.765904][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.765907][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.765911][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.765914][ 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:2333) 
[ 14.765918][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.765922][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.765925][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.765928][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.765932][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.765935][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.765938][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.765941][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.765943][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.765948][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 14.765950][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.765953][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.765957][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.765962][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.765965][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.765969][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.765972][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.765976][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.765980][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.765983][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.765987][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.765991][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.765995][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.765998][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 14.766003][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.766005][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.766007][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.766011][    C3]  </IRQ>
[   14.766012][    C3]  <TASK>
[ 14.766013][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.766016][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.766019][ C3] Code: b0 b8 00 c3 cc cc cc cc 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 a3 d0 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:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  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
[   14.766022][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   14.766025][    C3] RAX: 000000000003e2b1 RBX: 1ffff9200002afc1 RCX: ffffffffb9755a19
[   14.766027][    C3] RDX: 0000000000000000 RSI: ffffffffba285f31 RDI: ffffffffb9a50ce0
[   14.766028][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   14.766030][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   14.766031][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 14.766035][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.766040][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.766042][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.766045][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.766048][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.766052][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.766057][ C3] do_idle (kernel/sched/idle.c:325) 
[ 14.766061][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.766064][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.766068][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.766073][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.436850][    C0] INFO: lockdep is turned off.
| [   16.437041][    C0] Preemption disabled at:
| [ 16.437043][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
| [   16.437495][    C0] Tainted: [W]=WARN
[   16.437497][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.437498][    C0] Call Trace:
[   16.437500][    C0]  <IRQ>
[ 16.437503][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.437508][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 16.437514][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.437518][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.437520][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.437525][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.437531][ 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) 
[ 16.437535][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.437538][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.437542][ 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) 
[ 16.437546][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.437549][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.437554][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.437557][ 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:2333) 
[ 16.437562][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.437566][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.437569][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.437573][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 16.437577][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.437582][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 16.437585][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 16.437587][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.437589][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.437594][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.437597][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.437599][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.437602][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.437607][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.437611][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.437615][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.437618][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.437622][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.437625][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.437630][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.437634][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.437638][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.437644][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.437647][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.437652][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.437655][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.437657][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   16.437660][    C0]  </IRQ>
[   16.437661][    C0]  <TASK>
[ 16.437663][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.437665][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 16.437669][ C0] Code: b0 b8 00 c3 cc cc cc cc 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 a3 d0 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:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  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
[   16.437672][    C0] RSP: 0018:ffffffffba407df8 EFLAGS: 00000246
[   16.437675][    C0] RAX: 0000000000000000 RBX: 1ffffffff7480fc3 RCX: ffffffffb9755a19
[   16.437678][    C0] RDX: ffffed1006c0667b RSI: ffffffffb9a50c60 RDI: ffffffffb6f84d8f
[   16.437679][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c0667a
[   16.437681][    C0] R10: ffff8880360333d3 R11: ffff888001bacb58 R12: 0000000000000000
[   16.437683][    C0] R13: ffffffffba41f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.437687][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.437691][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.437695][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 16.437697][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.437700][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.437703][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.437708][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 16.437714][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.437718][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.437722][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.437725][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.437729][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 16.437733][ 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