======================================
| [ 12.862768][ C2] #0: ffff888008745c20 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff (./include/linux/mmap_lock.h:147 mm/util.c:577) 
| [ 12.863157][ C2] #1: ffffffffb37749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   12.863538][    C2]
| [   12.863538][    C2] stack backtrace:
[   12.863806][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.863808][    C2] Call Trace:
[   12.863810][    C2]  <IRQ>
[ 12.863811][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.863817][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 12.863822][ C2] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 12.863825][ C2] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 12.863830][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 12.863834][ C2] ? save_trace (kernel/locking/lockdep.c:594) 
[ 12.863839][ C2] mark_lock (kernel/locking/lockdep.c:4754) 
[ 12.863842][ C2] mark_usage (kernel/locking/lockdep.c:4643) 
[ 12.863845][ C2] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 12.863850][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 12.863853][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 12.863856][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 12.863859][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 12.863862][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 12.863865][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 12.863868][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 12.863871][ C2] simple_pin_fs (fs/libfs.c:1066) 
[ 12.863874][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 12.863877][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 12.863883][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 12.863886][ C2] ? __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) 
[ 12.863891][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 12.863894][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 12.863898][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.863900][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 12.863904][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.863908][ C2] ? __pfx_mas_destroy (lib/maple_tree.c:5524) 
[ 12.863912][ C2] ? mas_store_prealloc (lib/maple_tree.c:5458 (discriminator 2)) 
[ 12.863915][ C2] ? __mmap_region (mm/vma.c:2434 mm/vma.c:2519) 
[ 12.863918][ C2] ? do_mmap (mm/mmap.c:561) 
[ 12.863922][ C2] ? vm_mmap_pgoff (mm/util.c:579) 
[ 12.863925][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.863929][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.863934][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.863938][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 12.863942][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 12.863945][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 12.863949][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 12.863954][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 12.863958][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 12.863961][ C2] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 12.863963][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 12.863968][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 12.863972][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.863977][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.863980][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.863983][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   12.863986][    C2]  </IRQ>
[   12.863987][    C2]  <TASK>
[ 12.863989][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.863991][ C2] RIP: 0010:mas_destroy (lib/maple_tree.c:5524) 
[ 12.863996][ C2] Code: 4c 89 f6 48 c7 c7 60 be 17 b4 e8 7b d9 70 fe e9 8f f9 ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 49 89 fe 41
All code
========
   0:	4c 89 f6             	mov    %r14,%rsi
   3:	48 c7 c7 60 be 17 b4 	mov    $0xffffffffb417be60,%rdi
   a:	e8 7b d9 70 fe       	call   0xfffffffffe70d98a
   f:	e9 8f f9 ff ff       	jmp    0xfffffffffffff9a3
  14:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  35:	fc ff df 
  38:	41 57                	push   %r15
  3a:	41 56                	push   %r14
  3c:	49 89 fe             	mov    %rdi,%r14
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   b:	fc ff df 
   e:	41 57                	push   %r15
  10:	41 56                	push   %r14
  12:	49 89 fe             	mov    %rdi,%r14
  15:	41                   	rex.B
[   12.863999][    C2] RSP: 0018:ffffc900004b7880 EFLAGS: 00000297
[   12.864002][    C2] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000001
[   12.864004][    C2] RDX: 1ffff92000096f4c RSI: ffffffffb3272ecb RDI: ffffc900004b7a28
[   12.864006][    C2] RBP: ffffc900004b7a28 R08: dffffc0000000000 R09: 0000000000000001
[   12.864007][    C2] R10: ffffffffb41db797 R11: ffffffffb3774ae0 R12: ffffc900004b7a60
[   12.864009][    C2] R13: 000000000000000f R14: 0000000000000000 R15: 1ffff92000096f19
[ 12.864015][ C2] mas_store_prealloc (lib/maple_tree.c:5458 (discriminator 2)) 
[ 12.864018][ C2] ? mas_preallocate (./include/linux/maple_tree.h:562 lib/maple_tree.c:5502) 
[ 12.864021][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 12.864023][ C2] ? __pfx_mas_store_prealloc (lib/maple_tree.c:5458) 
[ 12.864026][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 12.864031][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4209) 
[ 12.864038][ C2] __mmap_region (mm/vma.c:2434 mm/vma.c:2519) 
[ 12.864042][ C2] ? __pfx___mmap_region (mm/vma.c:2499) 
[ 12.864047][ C2] ? mas_find (lib/maple_tree.c:6016) 
[ 12.864053][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 12.864067][ C2] ? mmap_region (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/mman.h:202 mm/vma.c:2581) 
[ 12.864072][ C2] do_mmap (mm/mmap.c:561) 
[ 12.864076][ C2] ? __pfx_do_mmap (mm/mmap.c:342) 
[ 12.864079][ C2] ? down_write_killable (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1590) 
[ 12.864082][ C2] ? __pfx_down_write_killable (kernel/locking/rwsem.c:1586) 
[ 12.864086][ C2] vm_mmap_pgoff (mm/util.c:579) 
[ 12.864092][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:567) 
[ 12.864095][ C2] ? do_user_addr_fault (./include/linux/mmap_lock.h:212 arch/x86/mm/fault.c:1416) 
[ 12.864102][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.864106][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.864109][    C2] RIP: 0033:0x7f1e141f8116
[ 12.864112][ C2] Code: 5d 41 5c c3 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74 37 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 62 5b 5d c3 0f 1f 80 00 00 00 00 c7 05 ae f0
All code
========
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	c3                   	ret
   4:	f3 0f 1e fa          	endbr64
   8:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
   f:	75 2b                	jne    0x3c
  11:	55                   	push   %rbp
  12:	48 89 fd             	mov    %rdi,%rbp
  15:	53                   	push   %rbx
  16:	89 cb                	mov    %ecx,%ebx
  18:	48 85 ff             	test   %rdi,%rdi
  1b:	74 37                	je     0x54
  1d:	41 89 da             	mov    %ebx,%r10d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 62                	ja     0x94
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3c:	c7                   	.byte 0xc7
  3d:	05                   	.byte 0x5
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	f0                   	lock

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 62                	ja     0x6a
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	c3                   	ret
   b:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  12:	c7                   	.byte 0xc7
  13:	05                   	.byte 0x5
  14:	ae                   	scas   %es:(%rdi),%al
  15:	f0                   	lock
[   12.864115][    C2] RSP: 002b:00007ffd6fbd3f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   12.864118][    C2] RAX: ffffffffffffffda RBX: 0000000000000022 RCX: 00007f1e141f8116
[   12.864120][    C2] RDX: 0000000000000003 RSI: 0000000000002000 RDI: 0000000000000000
[   12.864122][    C2] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
[   12.864123][    C2] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000000
[   12.864125][    C2] R13: 0000000000000000 R14: 00007ffd6fbd4080 R15: 00007f1e14207f80
| [   12.885611][    C2] RCU nest depth: 0, expected: 0
| [   12.885814][    C2] INFO: lockdep is turned off.
| [   12.886134][    C2] Preemption disabled at:
| [ 12.886136][ C2] handle_softirqs (kernel/softirq.c:553) 
[   12.886550][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.886551][    C2] Call Trace:
[   12.886553][    C2]  <IRQ>
[ 12.886554][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.886561][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 12.886568][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 12.886572][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 12.886575][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 12.886580][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 12.886584][ C2] ? 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) 
[ 12.886589][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 12.886592][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 12.886597][ C2] ? 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) 
[ 12.886601][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 12.886605][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 12.886610][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 12.886614][ C2] ? __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) 
[ 12.886618][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 12.886623][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 12.886626][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.886629][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 12.886633][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.886636][ C2] ? __pfx_mas_destroy (lib/maple_tree.c:5524) 
[ 12.886640][ C2] ? mas_store_prealloc (lib/maple_tree.c:5458 (discriminator 2)) 
[ 12.886643][ C2] ? __mmap_region (mm/vma.c:2434 mm/vma.c:2519) 
[ 12.886646][ C2] ? do_mmap (mm/mmap.c:561) 
[ 12.886650][ C2] ? vm_mmap_pgoff (mm/util.c:579) 
[ 12.886654][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.886659][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.886664][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.886668][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 12.886672][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 12.886675][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 12.886679][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 12.886684][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 12.886688][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 12.886691][ C2] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 12.886694][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 12.886699][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 12.886702][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.886707][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.886710][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.886713][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   12.886716][    C2]  </IRQ>
[   12.886717][    C2]  <TASK>
[ 12.886719][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.886721][ C2] RIP: 0010:mas_destroy (lib/maple_tree.c:5524) 
[ 12.886725][ C2] Code: 4c 89 f6 48 c7 c7 60 be 17 b4 e8 7b d9 70 fe e9 8f f9 ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 49 89 fe 41
All code
========
   0:	4c 89 f6             	mov    %r14,%rsi
   3:	48 c7 c7 60 be 17 b4 	mov    $0xffffffffb417be60,%rdi
   a:	e8 7b d9 70 fe       	call   0xfffffffffe70d98a
   f:	e9 8f f9 ff ff       	jmp    0xfffffffffffff9a3
  14:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  35:	fc ff df 
  38:	41 57                	push   %r15
  3a:	41 56                	push   %r14
  3c:	49 89 fe             	mov    %rdi,%r14
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   b:	fc ff df 
   e:	41 57                	push   %r15
  10:	41 56                	push   %r14
  12:	49 89 fe             	mov    %rdi,%r14
  15:	41                   	rex.B
[   12.886727][    C2] RSP: 0018:ffffc900004b7880 EFLAGS: 00000297
[   12.886730][    C2] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000001
[   12.886732][    C2] RDX: 1ffff92000096f4c RSI: ffffffffb3272ecb RDI: ffffc900004b7a28
[   12.886734][    C2] RBP: ffffc900004b7a28 R08: dffffc0000000000 R09: 0000000000000001
[   12.886736][    C2] R10: ffffffffb41db797 R11: ffffffffb3774ae0 R12: ffffc900004b7a60
[   12.886737][    C2] R13: 000000000000000f R14: 0000000000000000 R15: 1ffff92000096f19
[ 12.886743][ C2] mas_store_prealloc (lib/maple_tree.c:5458 (discriminator 2)) 
[ 12.886746][ C2] ? mas_preallocate (./include/linux/maple_tree.h:562 lib/maple_tree.c:5502) 
[ 12.886749][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 12.886751][ C2] ? __pfx_mas_store_prealloc (lib/maple_tree.c:5458) 
[ 12.886754][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 12.886759][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4209) 
[ 12.886767][ C2] __mmap_region (mm/vma.c:2434 mm/vma.c:2519) 
[ 12.886770][ C2] ? __pfx___mmap_region (mm/vma.c:2499) 
[ 12.886775][ C2] ? mas_find (lib/maple_tree.c:6016) 
[ 12.886782][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 12.886795][ C2] ? mmap_region (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/mman.h:202 mm/vma.c:2581) 
[ 12.886799][ C2] do_mmap (mm/mmap.c:561) 
[ 12.886804][ C2] ? __pfx_do_mmap (mm/mmap.c:342) 
[ 12.886807][ C2] ? down_write_killable (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1590) 
[ 12.886809][ C2] ? __pfx_down_write_killable (kernel/locking/rwsem.c:1586) 
[ 12.886814][ C2] vm_mmap_pgoff (mm/util.c:579) 
[ 12.886819][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:567) 
[ 12.886823][ C2] ? do_user_addr_fault (./include/linux/mmap_lock.h:212 arch/x86/mm/fault.c:1416) 
[ 12.886830][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.886834][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.886837][    C2] RIP: 0033:0x7f1e141f8116
[ 12.886839][ C2] Code: 5d 41 5c c3 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74 37 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 62 5b 5d c3 0f 1f 80 00 00 00 00 c7 05 ae f0
All code
========
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	c3                   	ret
   4:	f3 0f 1e fa          	endbr64
   8:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
   f:	75 2b                	jne    0x3c
  11:	55                   	push   %rbp
  12:	48 89 fd             	mov    %rdi,%rbp
  15:	53                   	push   %rbx
  16:	89 cb                	mov    %ecx,%ebx
  18:	48 85 ff             	test   %rdi,%rdi
  1b:	74 37                	je     0x54
  1d:	41 89 da             	mov    %ebx,%r10d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 62                	ja     0x94
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3c:	c7                   	.byte 0xc7
  3d:	05                   	.byte 0x5
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	f0                   	lock

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 62                	ja     0x6a
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	c3                   	ret
   b:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  12:	c7                   	.byte 0xc7
  13:	05                   	.byte 0x5
  14:	ae                   	scas   %es:(%rdi),%al
  15:	f0                   	lock
[   12.886842][    C2] RSP: 002b:00007ffd6fbd3f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   12.886844][    C2] RAX: ffffffffffffffda RBX: 0000000000000022 RCX: 00007f1e141f8116
[   12.886846][    C2] RDX: 0000000000000003 RSI: 0000000000002000 RDI: 0000000000000000
[   12.886848][    C2] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
[   12.886850][    C2] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000000


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