======================================
| [   14.521993][    C3] 1 lock held by ksoftirqd/3/32:
| [ 14.522165][ C3] #0: ffffffff94d8b540 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   14.522476][    C3]
| [   14.522476][    C3] stack backtrace:
[   14.522692][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.522694][    C3] Call Trace:
[   14.522696][    C3]  <TASK>
[ 14.522699][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.522704][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 14.522709][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 14.522713][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.522717][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 14.522722][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 14.522726][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 14.522728][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 14.522733][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 14.522736][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.522739][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.522743][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 14.522745][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.522749][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.522752][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.522754][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 14.522757][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.522761][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 14.522766][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.522769][ 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:2376) 
[ 14.522773][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 14.522776][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.522779][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.522784][ C3] ? kthread (kernel/kthread.c:464) 
[ 14.522788][ C3] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.522790][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 14.522793][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 14.522796][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 14.522802][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.522806][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.522809][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.522812][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 14.522818][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.522822][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.522824][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 14.522827][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.522832][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.522837][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 14.522840][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 14.522844][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 14.522846][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.522850][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 14.522854][ C3] kthread (kernel/kthread.c:464) 
[ 14.522857][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.522860][ C3] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 14.522862][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.522865][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.522868][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.522872][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.522874][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.522877][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   14.533017][    C3] RCU nest depth: 0, expected: 0
| [   14.533175][    C3] INFO: lockdep is turned off.
| [   14.533341][    C3] Preemption disabled at:
| [ 14.533343][ C3] handle_softirqs (kernel/softirq.c:553) 
[   14.533673][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.533674][    C3] Call Trace:
[   14.533676][    C3]  <TASK>
[ 14.533678][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.533683][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 14.533689][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.533692][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.533695][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 14.533699][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.533702][ 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) 
[ 14.533707][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 14.533710][ 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) 
[ 14.533713][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.533718][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.533722][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 14.533726][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.533729][ 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:2376) 
[ 14.533732][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 14.533735][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.533738][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.533741][ C3] ? kthread (kernel/kthread.c:464) 
[ 14.533744][ C3] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.533747][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 14.533751][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 14.533754][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 14.533759][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.533763][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.533766][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.533769][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 14.533775][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.533779][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.533782][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 14.533784][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.533789][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.533793][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 14.533797][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 14.533801][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 14.533803][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.533807][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 14.533810][ C3] kthread (kernel/kthread.c:464) 
[ 14.533814][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.533817][ C3] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 14.533819][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.533823][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.533826][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.533829][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.533832][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.533835][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   15.603334][    C3] INFO: lockdep is turned off.
| [   15.603529][    C3] Preemption disabled at:
| [ 15.603531][ C3] __slab_alloc.constprop.0 (mm/slub.c:3945) 
| [   15.603935][    C3] Tainted: [W]=WARN
[   15.603937][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.603939][    C3] Call Trace:
[   15.603940][    C3]  <IRQ>
[ 15.603942][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.603949][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 15.603955][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.603959][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.603961][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.603965][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.603970][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.603975][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.603978][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.603981][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.603988][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.603991][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 15.603996][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.603999][ 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:2376) 
[ 15.604003][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 15.604008][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.604010][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.604014][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.604019][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.604022][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.604026][ C3] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 15.604029][ C3] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 15.604032][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 15.604035][ C3] ? __kmalloc_cache_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4353) 
[ 15.604039][ C3] ? netdev_create_hash (net/core/dev.c:12448) 
[ 15.604041][ C3] ? netdev_init (net/core/dev.c:12463) 
[ 15.604043][ C3] ? ops_init (net/core/net_namespace.c:138) 
[ 15.604048][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 15.604052][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.604056][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.604060][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.604063][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.604066][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 15.604072][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.604076][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.604079][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 15.604084][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.604089][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 15.604094][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.604097][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.604099][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.604103][    C3]  </IRQ>
[   15.604104][    C3]  <TASK>
[ 15.604105][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.604108][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.604112][ C3] Code: 74 24 10 e8 81 4c 56 fd 48 89 ef e8 39 9f 56 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 9c 4a fd 65 8b 05 f3 3c 1f 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	81 4c 56 fd 48 89 ef 	orl    $0xe8ef8948,-0x3(%rsi,%rdx,2)
   b:	e8 
   c:	39 9f 56 fd 81 e3    	cmp    %ebx,-0x1c7e02aa(%rdi)
  12:	00 02                	add    %al,(%rdx)
  14:	00 00                	add    %al,(%rax)
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 9c 4a fd       	call   0xfffffffffd4a9ce9		<-- trapping instruction
  2f:	65 8b 05 f3 3c 1f 03 	mov    %gs:0x31f3cf3(%rip),%eax        # 0x31f3d29
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 9c 4a fd       	call   0xfffffffffd4a9cbf
   5:	65 8b 05 f3 3c 1f 03 	mov    %gs:0x31f3cf3(%rip),%eax        # 0x31f3cff
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[   15.604114][    C3] RSP: 0018:ffffc90000b97a98 EFLAGS: 00000206
[   15.604118][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffff90e577af
[   15.604120][    C3] RDX: 0000000000000000 RSI: ffffffff93a56840 RDI: 0000000000000001
[   15.604121][    C3] RBP: ffff888001040f40 R08: 0000000000000000 R09: 0000000000000000
[   15.604123][    C3] R10: ffffffff9587c7d7 R11: ffffc90000b978c0 R12: ffff888001040f40
[   15.604125][    C3] R13: ffffea000030dc00 R14: ffff888001043240 R15: ffff88800c373800
[ 15.604128][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:654 ./include/linux/cpumask.h:1210 ./include/trace/events/preemptirq.h:40) 
[ 15.604133][ C3] get_partial_node.part.0 (mm/slub.c:2902) 
[ 15.604139][ C3] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 15.604142][ C3] ? netdev_create_hash (net/core/dev.c:12448) 
[ 15.604146][ C3] ? netdev_create_hash (net/core/dev.c:12448) 
[ 15.604148][ C3] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 15.604153][ C3] ? netdev_create_hash (net/core/dev.c:12448) 
[ 15.604155][ C3] __kmalloc_cache_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4353) 
[ 15.604160][ C3] netdev_create_hash (net/core/dev.c:12448) 
[ 15.604163][ C3] netdev_init (net/core/dev.c:12463) 
[ 15.604165][ C3] ops_init (net/core/net_namespace.c:138) 
[ 15.604170][ C3] setup_net (net/core/net_namespace.c:442) 
[ 15.604173][ C3] ? __pfx_setup_net (net/core/net_namespace.c:431) 
[ 15.604177][ C3] ? debug_mutex_init (kernel/locking/mutex-debug.c:90) 
[ 15.604183][ C3] copy_net_ns (net/core/net_namespace.c:576) 
[ 15.604188][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 15.604195][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 15.604198][ C3] ? handle_mm_fault (mm/memory.c:6321) 
[ 15.604202][ C3] ksys_unshare (kernel/fork.c:3390) 
[ 15.604207][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3341) 
[ 15.604210][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 15.604214][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 15.604217][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 15.604220][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mm.h:704 ./include/linux/mm.h:799 arch/x86/mm/fault.c:1338) 
[ 15.604227][ C3] __x64_sys_unshare (kernel/fork.c:3459) 
[ 15.604230][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.604236][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.604239][    C3] RIP: 0033:0x7f2884b5793b
[ 15.604242][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   15.604245][    C3] RSP: 002b:00007fff37854918 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   15.604248][    C3] RAX: ffffffffffffffda RBX: 00007fff37854950 RCX: 00007f2884b5793b
[   15.604250][    C3] RDX: 0000000000000000 RSI: 00007fff37854950 RDI: 0000000040000000
[   15.604251][    C3] RBP: 00007f2884b13000 R08: 0000000000000000 R09: 0000000000000000
[   15.604253][    C3] R10: 00007f2884b2cf18 R11: 0000000000000206 R12: 0000000000000004
[   15.604254][    C3] R13: 00007fff37854950 R14: 00007f2884b13000 R15: 00000000004082a0
| [   16.641937][    C3] INFO: lockdep is turned off.
| [   16.642109][    C3] Preemption disabled at:
| [ 16.642111][ C3] 0x0 
| [   16.642426][    C3] Tainted: [W]=WARN
[   16.642428][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.642430][    C3] Call Trace:
[   16.642431][    C3]  <IRQ>
[ 16.642433][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.642441][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 16.642448][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.642452][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.642455][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.642460][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.642464][ 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) 
[ 16.642469][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.642472][ 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) 
[ 16.642475][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.642481][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.642485][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.642489][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.642492][ 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:2376) 
[ 16.642496][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 16.642501][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.642503][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.642508][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.642512][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.642515][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.642518][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.642521][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.642523][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.642526][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 16.642528][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.642530][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.642535][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.642540][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.642544][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.642548][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.642553][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.642556][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.642560][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 16.642565][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.642570][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.642574][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.642579][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 16.642584][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.642587][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.642589][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.642593][    C3]  </IRQ>
[   16.642594][    C3]  <TASK>
[ 16.642596][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.642598][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.642602][ C3] Code: 92 d0 00 e9 03 55 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 63 97 22 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:	92                   	xchg   %eax,%edx
   1:	d0 00                	rolb   $1,(%rax)
   3:	e9 03 55 02 00       	jmp    0x2550b
   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 63 97 22 00 	verw   0x229763(%rip)        # 0x22978b
  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
[   16.642605][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   16.642608][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffff9366a5f9
[   16.642610][    C3] RDX: ffffed100cb366fb RSI: ffffffff93a56840 RDI: ffffffff90b99f6f
[   16.642612][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100cb366fa
[   16.642613][    C3] R10: ffff8880659b37d3 R11: ffff888001b4cad8 R12: 0000000000000000
[   16.642615][    C3] R13: ffff888001b645c0 R14: dffffc0000000000 R15: 0000000000000000
[ 16.642619][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.642623][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.642626][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.642629][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.642631][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.642634][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.642637][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.642641][ C3] do_idle (kernel/sched/idle.c:325) 
[ 16.642644][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.642647][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.642650][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 16.642656][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.684868][    C3] INFO: lockdep is turned off.
| [   17.685043][    C3] Preemption disabled at:
| [ 17.685044][ C3] 0x0 
| [   17.685366][    C3] Tainted: [W]=WARN
[   17.685367][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.685369][    C3] Call Trace:
[   17.685371][    C3]  <IRQ>
[ 17.685373][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.685383][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 17.685390][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.685394][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.685397][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.685401][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.685406][ 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) 
[ 17.685411][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.685414][ 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) 
[ 17.685417][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.685424][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.685427][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 17.685431][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.685434][ 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:2376) 
[ 17.685438][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 17.685443][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.685445][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.685450][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.685454][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.685458][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.685461][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.685463][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.685466][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.685469][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 17.685471][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.685473][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.685477][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.685482][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.685486][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.685491][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.685496][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.685499][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.685502][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 17.685508][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.685513][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.685518][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.685522][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 17.685527][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.685530][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.685533][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.685536][    C3]  </IRQ>
[   17.685537][    C3]  <TASK>
[ 17.685539][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.685542][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.685545][ C3] Code: 92 d0 00 e9 03 55 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 63 97 22 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:	92                   	xchg   %eax,%edx
   1:	d0 00                	rolb   $1,(%rax)
   3:	e9 03 55 02 00       	jmp    0x2550b
   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 63 97 22 00 	verw   0x229763(%rip)        # 0x22978b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   17.685548][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   17.685552][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffff9366a5f9
[   17.685554][    C3] RDX: ffffed100cb366fb RSI: ffffffff93a56840 RDI: ffffffff90b99f6f
[   17.685556][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100cb366fa
[   17.685557][    C3] R10: ffff8880659b37d3 R11: ffff888001b4cad8 R12: 0000000000000000
[   17.685559][    C3] R13: ffff888001b645c0 R14: dffffc0000000000 R15: 0000000000000000
[ 17.685563][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.685567][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.685571][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.685573][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.685575][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.685578][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.685582][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.685586][ C3] do_idle (kernel/sched/idle.c:325) 
[ 17.685589][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.685591][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.685595][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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