======================================
| [ 12.408214][ C2] #0: ffff8880010860a0 (&mm->mmap_lock){++++}-{4:4}, at: __vm_munmap (./include/linux/mmap_lock.h:147 mm/vma.c:3011) 
| [ 12.408585][ C2] #1: ffffffff9bf774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   12.408959][    C2]
| [   12.408959][    C2] stack backtrace:
[   12.409222][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.409223][    C2] Call Trace:
[   12.409225][    C2]  <IRQ>
[ 12.409228][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.409234][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 12.409239][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 12.409244][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 12.409249][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 12.409253][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 12.409257][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 12.409260][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 12.409264][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 12.409268][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 12.409271][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.409274][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.409279][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 12.409282][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.409286][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 12.409289][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.409291][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 12.409295][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 12.409298][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 12.409303][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 12.409305][ 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:2376) 
[ 12.409311][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.409313][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 12.409316][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.409319][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 12.409323][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.409327][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 12.409330][ C2] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 12.409333][ C2] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 12.409336][ C2] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 12.409339][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 12.409342][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.409346][ C2] ? mas_store_gfp (lib/maple_tree.c:1345 lib/maple_tree.c:4255 lib/maple_tree.c:5432) 
[ 12.409349][ C2] ? do_vmi_align_munmap (./include/linux/maple_tree.h:562 ./include/linux/mm.h:1108 mm/vma.c:1487) 
[ 12.409354][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.409358][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 12.409362][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.409365][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.409369][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.409372][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 12.409376][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.409379][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 12.409382][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.409387][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 12.409392][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.409397][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.409400][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.409403][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   12.409407][    C2]  </IRQ>
[   12.409408][    C2]  <TASK>
[ 12.409410][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.409412][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 12.409417][ C2] Code: 74 24 10 e8 c1 fe 81 fd 48 89 ef e8 79 51 82 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> fa 4e 76 fd 65 8b 05 13 bd 96 02 85 c0 74 0e 5b 5d c3 cc cc cc
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	c1 fe 81             	sar    $0x81,%esi
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 51 82 fd       	call   0xfffffffffd825189
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  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 fa 4e 76 fd       	call   0xfffffffffd764f29		<-- trapping instruction
  2f:	65 8b 05 13 bd 96 02 	mov    %gs:0x296bd13(%rip),%eax        # 0x296bd49
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	e8 fa 4e 76 fd       	call   0xfffffffffd764eff
   5:	65 8b 05 13 bd 96 02 	mov    %gs:0x296bd13(%rip),%eax        # 0x296bd1f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[   12.409419][    C2] RSP: 0018:ffffc900006e7538 EFLAGS: 00000206
[   12.409422][    C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040
[   12.409424][    C2] RDX: 0000000000000000 RSI: ffffffff9ba9175c RDI: 0000000000000001
[   12.409426][    C2] RBP: ffff88800104fe40 R08: 0000000000000001 R09: 0000000000000001
[   12.409428][    C2] R10: ffffffff9c9e7cd7 R11: ffff88800104fe58 R12: ffff88800104fe40
[   12.409429][    C2] R13: ffffea0000141900 R14: ffff888001050ac0 R15: ffff888005064100
[ 12.409436][ C2] get_partial_node.part.0 (mm/slub.c:2902) 
[ 12.409441][ C2] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 12.409445][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.409450][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.409453][ C2] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 12.409457][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.409460][ C2] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 12.409465][ C2] mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.409470][ C2] mas_store_gfp (lib/maple_tree.c:1345 lib/maple_tree.c:4255 lib/maple_tree.c:5432) 
[ 12.409475][ C2] ? __pfx_mas_store_gfp (lib/maple_tree.c:5425) 
[ 12.409478][ C2] ? __pfx_mas_prev_range (lib/maple_tree.c:5853) 
[ 12.409482][ C2] ? vms_gather_munmap_vmas (mm/vma.c:1408) 
[ 12.409488][ C2] do_vmi_align_munmap (./include/linux/maple_tree.h:562 ./include/linux/mm.h:1108 mm/vma.c:1487) 
[ 12.409493][ C2] ? __pfx_do_vmi_align_munmap (mm/vma.c:1474) 
[ 12.409504][ C2] ? __vm_munmap (./include/linux/mmap_lock.h:147 mm/vma.c:3011) 
[ 12.409508][ C2] ? mas_walk (lib/maple_tree.c:3605 lib/maple_tree.c:4905) 
[ 12.409513][ C2] do_vmi_munmap (mm/vma.c:1540) 
[ 12.409517][ C2] __vm_munmap (mm/vma.c:3014) 
[ 12.409521][ C2] ? __pfx___vm_munmap (mm/vma.c:3005) 
[ 12.409525][ C2] ? vm_mmap_pgoff (mm/util.c:583) 
[ 12.409533][ C2] ? __pfx_get_random_u64 (drivers/char/random.c:555) 
[ 12.409539][ C2] elf_load (fs/binfmt_elf.c:382 fs/binfmt_elf.c:407) 
[ 12.409544][ C2] load_elf_binary (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 fs/binfmt_elf.c:1175) 
[ 12.409551][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.409554][ C2] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 12.409556][ C2] ? exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.409562][ C2] exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.409567][ C2] ? __pfx_exec_binprm (fs/exec.c:1734) 
[ 12.409569][ C2] ? bprm_execve (fs/exec.c:1792 fs/exec.c:1778) 
[ 12.409574][ C2] bprm_execve (fs/exec.c:1802 fs/exec.c:1778) 
[ 12.409577][ C2] kernel_execve (fs/exec.c:1968) 
[ 12.409581][ C2] call_usermodehelper_exec_async (kernel/umh.c:113) 
[ 12.409585][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.409589][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.409591][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.409595][ C2] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 12.409598][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.409601][ C2] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   12.432780][    C2] RCU nest depth: 0, expected: 0
| [   12.432986][    C2] INFO: lockdep is turned off.
| [   12.433197][    C2] Preemption disabled at:
| [ 12.433199][ C2] __slab_alloc.constprop.0 (mm/slub.c:3945) 
[   12.433630][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.433632][    C2] Call Trace:
[   12.433634][    C2]  <IRQ>
[ 12.433636][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.433643][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 12.433651][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 12.433655][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 12.433657][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 12.433662][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.433668][ 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) 
[ 12.433672][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 12.433675][ 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) 
[ 12.433678][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 12.433684][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 12.433687][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 12.433692][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 12.433694][ 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:2376) 
[ 12.433700][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.433704][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 12.433706][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.433711][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 12.433716][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.433720][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 12.433724][ C2] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 12.433727][ C2] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 12.433730][ C2] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 12.433733][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 12.433736][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.433740][ C2] ? mas_store_gfp (lib/maple_tree.c:1345 lib/maple_tree.c:4255 lib/maple_tree.c:5432) 
[ 12.433744][ C2] ? do_vmi_align_munmap (./include/linux/maple_tree.h:562 ./include/linux/mm.h:1108 mm/vma.c:1487) 
[ 12.433751][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.433754][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 12.433759][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.433761][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.433765][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.433769][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 12.433772][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.433777][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 12.433780][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.433785][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 12.433790][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.433795][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.433799][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.433802][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   12.433805][    C2]  </IRQ>
[   12.433806][    C2]  <TASK>
[ 12.433808][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.433811][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 12.433815][ C2] Code: 74 24 10 e8 c1 fe 81 fd 48 89 ef e8 79 51 82 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> fa 4e 76 fd 65 8b 05 13 bd 96 02 85 c0 74 0e 5b 5d c3 cc cc cc
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	c1 fe 81             	sar    $0x81,%esi
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 51 82 fd       	call   0xfffffffffd825189
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  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 fa 4e 76 fd       	call   0xfffffffffd764f29		<-- trapping instruction
  2f:	65 8b 05 13 bd 96 02 	mov    %gs:0x296bd13(%rip),%eax        # 0x296bd49
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	e8 fa 4e 76 fd       	call   0xfffffffffd764eff
   5:	65 8b 05 13 bd 96 02 	mov    %gs:0x296bd13(%rip),%eax        # 0x296bd1f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[   12.433818][    C2] RSP: 0018:ffffc900006e7538 EFLAGS: 00000206
[   12.433821][    C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040
[   12.433823][    C2] RDX: 0000000000000000 RSI: ffffffff9ba9175c RDI: 0000000000000001
[   12.433825][    C2] RBP: ffff88800104fe40 R08: 0000000000000001 R09: 0000000000000001
[   12.433827][    C2] R10: ffffffff9c9e7cd7 R11: ffff88800104fe58 R12: ffff88800104fe40
[   12.433829][    C2] R13: ffffea0000141900 R14: ffff888001050ac0 R15: ffff888005064100
[ 12.433835][ C2] get_partial_node.part.0 (mm/slub.c:2902) 
[ 12.433841][ C2] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 12.433845][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.433849][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.433852][ C2] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 12.433857][ C2] ? mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.433860][ C2] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 12.433865][ C2] mas_alloc_nodes (lib/maple_tree.c:176 lib/maple_tree.c:1249) 
[ 12.433870][ C2] mas_store_gfp (lib/maple_tree.c:1345 lib/maple_tree.c:4255 lib/maple_tree.c:5432) 
[ 12.433874][ C2] ? __pfx_mas_store_gfp (lib/maple_tree.c:5425) 
[ 12.433877][ C2] ? __pfx_mas_prev_range (lib/maple_tree.c:5853) 
[ 12.433882][ C2] ? vms_gather_munmap_vmas (mm/vma.c:1408) 
[ 12.433888][ C2] do_vmi_align_munmap (./include/linux/maple_tree.h:562 ./include/linux/mm.h:1108 mm/vma.c:1487) 
[ 12.433892][ C2] ? __pfx_do_vmi_align_munmap (mm/vma.c:1474) 
[ 12.433903][ C2] ? __vm_munmap (./include/linux/mmap_lock.h:147 mm/vma.c:3011) 
[ 12.433908][ C2] ? mas_walk (lib/maple_tree.c:3605 lib/maple_tree.c:4905) 
[ 12.433912][ C2] do_vmi_munmap (mm/vma.c:1540) 
[ 12.433917][ C2] __vm_munmap (mm/vma.c:3014) 
[ 12.433921][ C2] ? __pfx___vm_munmap (mm/vma.c:3005) 
[ 12.433925][ C2] ? vm_mmap_pgoff (mm/util.c:583) 
[ 12.433933][ C2] ? __pfx_get_random_u64 (drivers/char/random.c:555) 
[ 12.433940][ C2] elf_load (fs/binfmt_elf.c:382 fs/binfmt_elf.c:407) 
[ 12.433945][ C2] load_elf_binary (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 fs/binfmt_elf.c:1175) 
[ 12.433952][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.433955][ C2] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 12.433957][ C2] ? exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.433963][ C2] exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.433967][ C2] ? __pfx_exec_binprm (fs/exec.c:1734) 
[ 12.433970][ C2] ? bprm_execve (fs/exec.c:1792 fs/exec.c:1778) 
[ 12.433974][ C2] bprm_execve (fs/exec.c:1802 fs/exec.c:1778) 
[ 12.433978][ C2] kernel_execve (fs/exec.c:1968) 
[ 12.433981][ C2] call_usermodehelper_exec_async (kernel/umh.c:113) 
[ 12.433986][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.433989][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.433992][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.433995][ C2] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 12.434000][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 


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