======================================
| [   14.647379][    C1] 1 lock held by ksoftirqd/1/22:
| [ 14.647552][ C1] #0: ffffffff97d774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   14.647861][    C1]
| [   14.647861][    C1] stack backtrace:
[   14.648081][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.648084][    C1] Call Trace:
[   14.648086][    C1]  <TASK>
[ 14.648088][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.648094][ C1] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 14.648099][ C1] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 14.648103][ C1] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.648108][ C1] ? save_trace (kernel/locking/lockdep.c:595) 
[ 14.648114][ C1] mark_lock (kernel/locking/lockdep.c:4756) 
[ 14.648117][ C1] mark_usage (kernel/locking/lockdep.c:4645) 
[ 14.648120][ C1] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 14.648124][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 14.648128][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 14.648131][ C1] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.648135][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.648139][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 14.648141][ C1] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.648146][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.648149][ C1] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.648152][ C1] simple_pin_fs (fs/libfs.c:1067) 
[ 14.648157][ C1] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.648159][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.648165][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.648169][ 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:2376) 
[ 14.648174][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.648177][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.648180][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.648184][ C1] ? kthread (kernel/kthread.c:464) 
[ 14.648187][ C1] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.648190][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 14.648193][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 14.648197][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 14.648202][ C1] __put_net (net/core/net_namespace.c:732) 
[ 14.648206][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.648210][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.648213][ C1] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.648218][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.648221][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.648224][ C1] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 14.648227][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.648231][ C1] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.648235][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 14.648239][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 14.648242][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 14.648245][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.648249][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 14.648253][ C1] kthread (kernel/kthread.c:464) 
[ 14.648255][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.648257][ C1] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 14.648260][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.648263][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.648266][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.648269][ C1] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.648272][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.648274][ C1] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   14.658610][    C1] RCU nest depth: 0, expected: 0
| [   14.658766][    C1] INFO: lockdep is turned off.
| [   14.658922][    C1] Preemption disabled at:
| [ 14.658924][ C1] handle_softirqs (kernel/softirq.c:553) 
[   14.659252][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.659253][    C1] Call Trace:
[   14.659255][    C1]  <TASK>
[ 14.659256][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.659262][ C1] __might_resched (kernel/sched/core.c:8796) 
[ 14.659267][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.659271][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.659274][ C1] ? simple_recursive_removal (fs/libfs.c:614) 
[ 14.659278][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.659282][ 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) 
[ 14.659288][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 14.659290][ 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) 
[ 14.659294][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.659299][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.659301][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.659306][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.659310][ 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:2376) 
[ 14.659314][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.659317][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.659320][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.659323][ C1] ? kthread (kernel/kthread.c:464) 
[ 14.659326][ C1] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.659329][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 14.659332][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 14.659335][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 14.659341][ C1] __put_net (net/core/net_namespace.c:732) 
[ 14.659344][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.659348][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.659350][ C1] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.659355][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.659359][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.659361][ C1] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 14.659364][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.659368][ C1] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.659372][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 14.659376][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 14.659380][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 14.659390][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 14.659394][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 14.659398][ C1] kthread (kernel/kthread.c:464) 
[ 14.659400][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.659402][ C1] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 14.659405][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.659408][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.659412][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.659415][ C1] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 14.659417][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 14.659420][ C1] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   16.302287][    C3] INFO: lockdep is turned off.
| [   16.302496][    C3] Preemption disabled at:
| [ 16.302497][ C3] __slab_alloc.constprop.0 (mm/slub.c:3945) 
| [   16.302931][    C3] Tainted: [W]=WARN
[   16.302932][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.302934][    C3] Call Trace:
[   16.302936][    C3]  <IRQ>
[ 16.302938][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.302945][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 16.302952][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.302957][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.302960][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.302964][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.302969][ 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) 
[ 16.302975][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.302978][ 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) 
[ 16.302981][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.302986][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.302989][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.302995][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.302998][ 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) 
[ 16.303004][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.303008][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.303011][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.303016][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.303020][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.303024][ C3] ? check_preemption_disabled (lib/smp_processor_id.c:56) 
[ 16.303029][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.303032][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.303035][ C3] ? is_module_text_address (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 kernel/module/main.c:3744) 
[ 16.303040][ C3] ? kernel_text_address (kernel/extable.c:119 kernel/extable.c:94) 
[ 16.303043][ C3] ? __kernel_text_address (kernel/extable.c:79) 
[ 16.303045][ C3] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 16.303049][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 16.303054][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.303058][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.303062][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.303066][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.303070][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.303072][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.303075][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 16.303079][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.303084][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.303087][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.303090][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.303097][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.303102][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.303107][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.303110][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.303113][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.303117][    C3]  </IRQ>
[   16.303118][    C3]  <TASK>
[ 16.303119][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.303122][ C3] RIP: 0010:check_preemption_disabled (lib/smp_processor_id.c:56) 
[ 16.303125][ C3] Code: 90 90 90 90 41 54 55 53 48 83 ec 08 65 44 8b 25 74 75 99 02 65 8b 05 69 75 99 02 a9 ff ff ff 7f 74 10 48 83 c4 08 44 89 e0 5b <5d> 41 5c e9 02 3d 02 00 9c 58 f6 c4 02 74 e9 48 89 fd 65 48 8b 05
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	41 54                	push   %r12
   6:	55                   	push   %rbp
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	65 44 8b 25 74 75 99 	mov    %gs:0x2997574(%rip),%r12d        # 0x2997588
  13:	02 
  14:	65 8b 05 69 75 99 02 	mov    %gs:0x2997569(%rip),%eax        # 0x2997584
  1b:	a9 ff ff ff 7f       	test   $0x7fffffff,%eax
  20:	74 10                	je     0x32
  22:	48 83 c4 08          	add    $0x8,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	e9 02 3d 02 00       	jmp    0x23d34
  32:	9c                   	pushf
  33:	58                   	pop    %rax
  34:	f6 c4 02             	test   $0x2,%ah
  37:	74 e9                	je     0x22
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	65                   	gs
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b
  3f:	05                   	.byte 0x5

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	e9 02 3d 02 00       	jmp    0x23d0a
   8:	9c                   	pushf
   9:	58                   	pop    %rax
   a:	f6 c4 02             	test   $0x2,%ah
   d:	74 e9                	je     0xfffffffffffffff8
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	65                   	gs
  13:	48                   	rex.W
  14:	8b                   	.byte 0x8b
  15:	05                   	.byte 0x5
[   16.303128][    C3] RSP: 0018:ffffc90000a378e0 EFLAGS: 00000286
[   16.303132][    C3] RAX: 0000000000000003 RBX: 0000000000000000 RCX: 0000000000000002
[   16.303134][    C3] RDX: 0000000000000000 RSI: ffffffff97053b60 RDI: ffffffff97053ba0
[   16.303135][    C3] RBP: ffffffff97d775e0 R08: 0000000000000000 R09: 0000000000000000
[   16.303137][    C3] R10: ffffffff946bd3c3 R11: ffffc90000a37a00 R12: 0000000000000003
[   16.303139][    C3] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
[ 16.303141][ C3] ? is_module_text_address (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 kernel/module/main.c:3744) 
[ 16.303147][ C3] rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.303150][ C3] lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.303153][ C3] ? is_module_text_address (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 kernel/module/main.c:3744) 
[ 16.303156][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 16.303160][ C3] is_module_text_address (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 kernel/module/main.c:3744) 
[ 16.303163][ C3] ? is_module_text_address (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 kernel/module/main.c:3744) 
[ 16.303166][ C3] kernel_text_address (kernel/extable.c:119 kernel/extable.c:94) 
[ 16.303169][ C3] __kernel_text_address (kernel/extable.c:79) 
[ 16.303171][ C3] unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 16.303174][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 16.303177][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 16.303184][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 16.303187][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 16.303191][ C3] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 16.303196][ C3] set_track_prepare (mm/slub.c:936) 
[ 16.303199][ C3] ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 16.303202][ C3] ? kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 16.303206][ C3] ? exit_mmap (mm/mmap.c:1311) 
[ 16.303210][ C3] ? mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 16.303214][ C3] ? exit_mm (kernel/exit.c:596) 
[ 16.303218][ C3] ? do_exit (kernel/exit.c:950) 
[ 16.303221][ C3] ? do_group_exit (kernel/exit.c:1089) 
[ 16.303224][ C3] ? __x64_sys_exit_group (kernel/exit.c:1117) 
[ 16.303227][ C3] ? x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 16.303232][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.303235][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 16.303238][ C3] __alloc_object (mm/kmemleak.c:697) 
[ 16.303242][ C3] __create_object (mm/kmemleak.c:770) 
[ 16.303247][ C3] __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 16.303252][ C3] kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 16.303256][ C3] ? exit_mmap (mm/mmap.c:1311) 
[ 16.303261][ C3] exit_mmap (mm/mmap.c:1311) 
[ 16.303265][ C3] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 16.303268][ C3] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:727 kernel/locking/mutex.c:746) 
[ 16.303273][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 16.303276][ C3] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 16.303285][ C3] mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 16.303288][ C3] exit_mm (kernel/exit.c:596) 
[ 16.303292][ C3] do_exit (kernel/exit.c:950) 
[ 16.303296][ C3] do_group_exit (kernel/exit.c:1089) 
[ 16.303300][ C3] __x64_sys_exit_group (kernel/exit.c:1117) 
[ 16.303304][ C3] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 16.303307][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.303310][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.303313][    C3] RIP: 0033:0x7fd499a02abd
[ 16.303316][ C3] Code: Unable to access opcode bytes at 0x7fd499a02a93.

Code starting with the faulting instruction
===========================================
[   16.303317][    C3] RSP: 002b:00007ffc245e4048 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   16.303320][    C3] RAX: ffffffffffffffda RBX: 00007fd499adf9c0 RCX: 00007fd499a02abd
[   16.303322][    C3] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   16.303324][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   16.303325][    C3] R10: 00007ffc245e3ef0 R11: 0000000000000246 R12: 00007fd499adf9c0


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