======================================
| [   19.439759][    C3] 1 lock held by swapper/3/0:
| [ 19.439987][ C3] #0: ffffffff94374480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   19.440400][    C3]
| [   19.440400][    C3] stack backtrace:
[   19.440674][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.440676][    C3] Call Trace:
[   19.440678][    C3]  <IRQ>
[ 19.440681][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.440687][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 19.440693][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 19.440697][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 19.440703][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 19.440707][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 19.440711][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 19.440715][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 19.440720][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 19.440724][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 19.440729][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.440735][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 19.440739][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 19.440746][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 19.440752][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 19.440757][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 19.440761][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 19.440765][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 19.440769][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 19.440772][ 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) 
[ 19.440776][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.440779][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 19.440782][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 19.440785][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 19.440789][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.440793][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.440796][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.440799][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.440801][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.440805][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 19.440808][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.440812][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.440817][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 19.440823][ C3] __put_net (net/core/net_namespace.c:732) 
[ 19.440826][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 19.440830][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.440833][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.440837][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.440841][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 19.440844][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.440848][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 19.440851][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.440856][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 19.440859][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 19.440863][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 19.440866][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 19.440868][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   19.440871][    C3]  </IRQ>
[   19.440872][    C3]  <TASK>
[ 19.440874][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.440877][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.440881][ 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
[   19.440884][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   19.440887][    C3] RAX: 0000000000044411 RBX: 1ffff9200002afc1 RCX: ffffffff93355a19
[   19.440889][    C3] RDX: 0000000000000000 RSI: ffffffff93e85f31 RDI: ffffffff93650ce0
[   19.440892][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   19.440895][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   19.440898][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 19.440905][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 19.440914][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.440917][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.440919][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.440923][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 19.440927][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 19.440932][ C3] do_idle (kernel/sched/idle.c:325) 
[ 19.440936][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.440940][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.440943][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 19.440948][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   19.459597][    C3] RCU nest depth: 0, expected: 0
| [   19.459802][    C3] INFO: lockdep is turned off.
| [   19.460010][    C3] Preemption disabled at:
| [ 19.460012][ C3] 0x0 
[   19.460496][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.460498][    C3] Call Trace:
[   19.460500][    C3]  <IRQ>
[ 19.460502][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.460510][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 19.460516][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 19.460521][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 19.460523][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 19.460527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.460533][ 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) 
[ 19.460538][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 19.460541][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 19.460545][ 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) 
[ 19.460549][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 19.460552][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 19.460557][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 19.460560][ 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) 
[ 19.460565][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.460569][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 19.460571][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 19.460575][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 19.460579][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.460584][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.460587][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.460589][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.460591][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.460596][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 19.460599][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.460602][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.460607][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 19.460613][ C3] __put_net (net/core/net_namespace.c:732) 
[ 19.460616][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 19.460620][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.460623][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.460627][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.460632][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 19.460636][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.460640][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 19.460643][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.460648][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 19.460651][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 19.460656][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 19.460658][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 19.460660][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   19.460664][    C3]  </IRQ>
[   19.460665][    C3]  <TASK>
[ 19.460666][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.460669][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.460673][ 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
[   19.460675][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   19.460679][    C3] RAX: 0000000000044411 RBX: 1ffff9200002afc1 RCX: ffffffff93355a19
[   19.460681][    C3] RDX: 0000000000000000 RSI: ffffffff93e85f31 RDI: ffffffff93650ce0
[   19.460682][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   19.460684][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   19.460686][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 19.460690][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 19.460695][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.460697][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.460700][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.460703][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 19.460708][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 19.460712][ C3] do_idle (kernel/sched/idle.c:325) 
[ 19.460716][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.460720][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.460723][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 19.460729][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   24.441640][    C1] INFO: lockdep is turned off.
| [   24.441899][    C1] Preemption disabled at:
| [ 24.441903][ C1] 0x0 
| [   24.442394][    C1] Tainted: [W]=WARN
[   24.442396][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.442398][    C1] Call Trace:
[   24.442401][    C1]  <IRQ>
[ 24.442405][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 24.442416][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 24.442425][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 24.442432][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 24.442436][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 24.442442][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 24.442451][ C1] ? 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) 
[ 24.442459][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 24.442463][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 24.442470][ C1] ? 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) 
[ 24.442478][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 24.442482][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 24.442491][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 24.442495][ C1] ? __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) 
[ 24.442504][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 24.442510][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 24.442514][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 24.442519][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 24.442526][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 24.442531][ C1] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 24.442536][ C1] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 24.442540][ C1] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 24.442544][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 24.442551][ C1] ? do_idle (kernel/sched/idle.c:325) 
[ 24.442556][ C1] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 24.442560][ C1] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 24.442567][ C1] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 24.442574][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 24.442579][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 24.442588][ C1] __put_net (net/core/net_namespace.c:732) 
[ 24.442593][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 24.442600][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 24.442605][ C1] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 24.442614][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 24.442620][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 24.442626][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.442632][ C1] rcu_core (kernel/rcu/tree.c:2826) 
[ 24.442637][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 24.442644][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 24.442647][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 24.442650][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   24.442655][    C1]  </IRQ>
[   24.442656][    C1]  <TASK>
[ 24.442659][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 24.442663][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 24.442669][ C1] 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
[   24.442674][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000246
[   24.442680][    C1] RAX: 0000000000000001 RBX: 1ffff92000026fc1 RCX: ffffffff93355a19
[   24.442683][    C1] RDX: ffffed1006c1667b RSI: ffffffff93650c60 RDI: ffffffff90b84d8f
[   24.442686][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c1667a
[   24.442690][    C1] R10: ffff8880360b33d3 R11: ffff88800588cb58 R12: 0000000000000000
[   24.442693][    C1] R13: ffff888001bb0040 R14: dffffc0000000000 R15: 0000000000000000
[ 24.442700][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 24.442706][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 24.442714][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 24.442718][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 24.442722][ C1] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 24.442728][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 24.442735][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 24.442743][ C1] do_idle (kernel/sched/idle.c:325) 
[ 24.442750][ C1] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 24.442755][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 24.442760][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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