======================================
| [   18.516188][    C0] 1 lock held by swapper/0/0:
| [ 18.516398][ C0] #0: ffffffffb2f749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   18.516776][    C0]
| [   18.516776][    C0] stack backtrace:
[   18.517050][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.517053][    C0] Call Trace:
[   18.517055][    C0]  <IRQ>
[ 18.517057][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.517065][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 18.517072][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 18.517076][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 18.517083][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 18.517087][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 18.517091][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 18.517096][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 18.517100][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 18.517105][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 18.517108][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 18.517113][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.517119][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 18.517122][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 18.517125][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 18.517128][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 18.517131][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 18.517134][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 18.517138][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 18.517144][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.517147][ 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) 
[ 18.517154][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.517157][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.517160][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.517164][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 18.517169][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.517174][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 18.517177][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 18.517180][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 18.517183][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.517189][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 18.517192][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 18.517196][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 18.517198][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 18.517206][ C0] __put_net (net/core/net_namespace.c:732) 
[ 18.517211][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 18.517215][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.517218][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.517222][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 18.517226][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 18.517231][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.517234][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 18.517238][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.517243][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 18.517247][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 18.517252][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.517255][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.517257][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   18.517261][    C0]  </IRQ>
[   18.517262][    C0]  <TASK>
[ 18.517263][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.517266][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 18.517271][ 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
[   18.517274][    C0] RSP: 0018:ffffffffb2c07df8 EFLAGS: 00000242
[   18.517277][    C0] RAX: 000000000006ba97 RBX: 1ffffffff6580fc3 RCX: ffffffffb1f5ba19
[   18.517280][    C0] RDX: 0000000000000000 RSI: ffffffffb2a87785 RDI: ffffffffb2251260
[   18.517282][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   18.517283][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   18.517285][    C0] R13: ffffffffb2c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 18.517289][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 18.517294][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 18.517296][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 18.517299][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.517303][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 18.517307][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 18.517315][ C0] do_idle (kernel/sched/idle.c:325) 
[ 18.517319][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 18.517323][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 18.517326][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 18.517331][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 18.517336][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 18.517340][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.535997][    C0] RCU nest depth: 0, expected: 0
| [   18.536188][    C0] INFO: lockdep is turned off.
| [   18.536648][    C0] Preemption disabled at:
| [ 18.536650][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   18.537246][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.537248][    C0] Call Trace:
[   18.537250][    C0]  <IRQ>
[ 18.537253][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.537260][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 18.537268][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.537273][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.537276][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 18.537282][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.537290][ 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) 
[ 18.537295][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 18.537298][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.537303][ 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) 
[ 18.537307][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.537310][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 18.537317][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.537320][ 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) 
[ 18.537327][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.537332][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.537335][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.537339][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 18.537345][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.537350][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 18.537353][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 18.537355][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 18.537358][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.537364][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 18.537367][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 18.537370][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 18.537373][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 18.537383][ C0] __put_net (net/core/net_namespace.c:732) 
[ 18.537387][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 18.537391][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.537394][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.537398][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 18.537405][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 18.537409][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.537414][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 18.537418][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.537423][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 18.537427][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 18.537432][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.537434][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.537437][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   18.537440][    C0]  </IRQ>
[   18.537442][    C0]  <TASK>
[ 18.537444][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.537447][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 18.537451][ 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
[   18.537454][    C0] RSP: 0018:ffffffffb2c07df8 EFLAGS: 00000242
[   18.537458][    C0] RAX: 000000000006ba97 RBX: 1ffffffff6580fc3 RCX: ffffffffb1f5ba19
[   18.537461][    C0] RDX: 0000000000000000 RSI: ffffffffb2a87785 RDI: ffffffffb2251260
[   18.537463][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   18.537464][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   18.537466][    C0] R13: ffffffffb2c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 18.537470][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 18.537475][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 18.537477][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 18.537480][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.537483][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 18.537488][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 18.537495][ C0] do_idle (kernel/sched/idle.c:325) 
[ 18.537499][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 18.537503][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 18.537506][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 18.537510][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 18.537515][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 18.537519][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   21.690871][    C0] INFO: lockdep is turned off.
| [   21.691164][    C0] Preemption disabled at:
| [ 21.691166][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
| [   21.691852][    C0] Tainted: [W]=WARN
[   21.691854][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.691857][    C0] Call Trace:
[   21.691860][    C0]  <IRQ>
[ 21.691863][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 21.691875][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 21.691886][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 21.691893][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 21.691898][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 21.691907][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 21.691918][ 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) 
[ 21.691926][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 21.691931][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 21.691939][ 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) 
[ 21.691947][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 21.691952][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 21.691963][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 21.691968][ 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) 
[ 21.691976][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 21.691982][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 21.691986][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 21.691993][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 21.692001][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.692008][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 21.692013][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 21.692017][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 21.692022][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.692029][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 21.692034][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 21.692039][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 21.692044][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 21.692053][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 21.692060][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 21.692069][ C0] __put_net (net/core/net_namespace.c:732) 
[ 21.692076][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 21.692082][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 21.692087][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 21.692097][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 21.692105][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 21.692114][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.692124][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 21.692131][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 21.692141][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 21.692146][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 21.692150][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   21.692156][    C0]  </IRQ>
[   21.692158][    C0]  <TASK>
[ 21.692161][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.692166][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 21.692172][ 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
[   21.692177][    C0] RSP: 0018:ffffffffb2c07df8 EFLAGS: 00000246
[   21.692184][    C0] RAX: 0000000000000000 RBX: 1ffffffff6580fc3 RCX: ffffffffb1f5ba19
[   21.692188][    C0] RDX: ffffed1006c0667b RSI: ffffffffb22511e0 RDI: ffffffffaf78633f
[   21.692191][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c0667a
[   21.692194][    C0] R10: ffff8880360333d3 R11: ffff888001b50558 R12: 0000000000000000
[   21.692198][    C0] R13: ffffffffb2c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 21.692205][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 21.692208][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.692213][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 21.692215][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 21.692218][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.692222][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 21.692227][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 21.692235][ C0] do_idle (kernel/sched/idle.c:325) 
[ 21.692239][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 21.692243][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 21.692247][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 21.692251][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 21.692257][ 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
schedule_preempt_disabled:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal