======================================
| [ 12.950635][ C2] #1: ffff8880016be9b8 (&mapping->i_mmap_rwsem){++++}-{4:4}, at: unmap_mapping_pages (mm/memory.c:4028) 
| [ 12.951079][ C2] #2: ffffffffb5b774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   12.951462][    C2]
| [   12.951462][    C2] stack backtrace:
[   12.951738][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.951740][    C2] Call Trace:
[   12.951742][    C2]  <IRQ>
[ 12.951745][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.951750][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 12.951755][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 12.951760][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 12.951765][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 12.951769][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 12.951773][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 12.951776][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 12.951780][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 12.951784][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 12.951788][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.951791][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.951796][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 12.951798][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.951802][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 12.951805][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.951808][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 12.951811][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 12.951814][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 12.951819][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 12.951821][ 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) 
[ 12.951827][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.951830][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 12.951832][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.951835][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 12.951840][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.951843][ C2] ? vma_interval_tree_iter_next (mm/interval_tree.c:23 (discriminator 7)) 
[ 12.951847][ C2] ? unmap_mapping_pages (mm/memory.c:3957 mm/memory.c:4029) 
[ 12.951850][ C2] ? invalidate_inode_pages2_range (mm/truncate.c:687) 
[ 12.951855][ C2] ? fuse_open (fs/fuse/file.c:280) 
[ 12.951858][ C2] ? do_dentry_open (fs/open.c:964) 
[ 12.951861][ C2] ? vfs_open (fs/open.c:1094) 
[ 12.951865][ C2] ? backing_file_open (fs/backing-file.c:45) 
[ 12.951869][ C2] ? ovl_open_realfile (fs/overlayfs/file.c:51) 
[ 12.951876][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.951880][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 12.951884][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.951887][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.951892][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 12.951896][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.951899][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 12.951904][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 12.951909][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.951915][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.951918][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.951921][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   12.951925][    C2]  </IRQ>
[   12.951926][    C2]  <TASK>
[ 12.951928][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.951930][ C2] RIP: 0010:vma_interval_tree_iter_next (mm/interval_tree.c:23 (discriminator 7)) 
[ 12.951934][ C2] Code: 2e e9 d6 00 00 00 48 8d 7b 08 4c 8d bb 50 ff ff ff 48 89 f8 4c 89 fd 48 c1 e8 03 42 80 3c 28 00 0f 85 ef 00 00 00 4c 8b 73 08 <4d> 39 e6 75 3b 4c 8d a5 b0 00 00 00 4c 89 e0 48 c1 e8 03 42 80 3c
All code
========
   0:	2e e9 d6 00 00 00    	cs jmp 0xdc
   6:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
   a:	4c 8d bb 50 ff ff ff 	lea    -0xb0(%rbx),%r15
  11:	48 89 f8             	mov    %rdi,%rax
  14:	4c 89 fd             	mov    %r15,%rbp
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  20:	0f 85 ef 00 00 00    	jne    0x115
  26:	4c 8b 73 08          	mov    0x8(%rbx),%r14
  2a:*	4d 39 e6             	cmp    %r12,%r14		<-- trapping instruction
  2d:	75 3b                	jne    0x6a
  2f:	4c 8d a5 b0 00 00 00 	lea    0xb0(%rbp),%r12
  36:	4c 89 e0             	mov    %r12,%rax
  39:	48 c1 e8 03          	shr    $0x3,%rax
  3d:	42                   	rex.X
  3e:	80                   	.byte 0x80
  3f:	3c                   	.byte 0x3c

Code starting with the faulting instruction
===========================================
   0:	4d 39 e6             	cmp    %r12,%r14
   3:	75 3b                	jne    0x40
   5:	4c 8d a5 b0 00 00 00 	lea    0xb0(%rbp),%r12
   c:	4c 89 e0             	mov    %r12,%rax
   f:	48 c1 e8 03          	shr    $0x3,%rax
  13:	42                   	rex.X
  14:	80                   	.byte 0x80
  15:	3c                   	.byte 0x3c
[   12.951937][    C2] RSP: 0018:ffffc900004e7158 EFLAGS: 00000246
[   12.951940][    C2] RAX: 1ffff1100172d2bf RBX: ffff88800b9695f0 RCX: 1ffff11001730057
[   12.951942][    C2] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff88800b9695f8
[   12.951944][    C2] RBP: ffff88800b969540 R08: 0000000000000001 R09: ffffed1000992ba8
[   12.951945][    C2] R10: ffff888004c95d43 R11: dffffc0000000000 R12: ffff8880096977b0
[   12.951947][    C2] R13: dffffc0000000000 R14: ffff88800a2602b0 R15: ffff88800b969540
[ 12.951955][ C2] unmap_mapping_pages (mm/memory.c:3957 mm/memory.c:4029) 
[ 12.951959][ C2] ? __pfx_unmap_mapping_pages (mm/memory.c:4018) 
[ 12.951962][ C2] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 12.951965][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 12.951970][ C2] invalidate_inode_pages2_range (mm/truncate.c:687) 
[ 12.951974][ C2] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:1070) 
[ 12.951981][ C2] ? __pfx_invalidate_inode_pages2_range (mm/truncate.c:649) 
[ 12.951984][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 12.951988][ C2] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 12.951998][ 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) 
[ 12.952008][ C2] ? fuse_file_io_open (fs/fuse/iomode.c:240) 
[ 12.952014][ C2] fuse_open (fs/fuse/file.c:280) 
[ 12.952018][ C2] do_dentry_open (fs/open.c:964) 
[ 12.952021][ C2] ? __pfx_fuse_open (fs/fuse/file.c:234) 
[ 12.952025][ C2] vfs_open (fs/open.c:1094) 
[ 12.952030][ C2] backing_file_open (fs/backing-file.c:45) 
[ 12.952033][ C2] ? inode_owner_or_capable (./include/linux/mnt_idmapping.h:87 fs/inode.c:2591) 
[ 12.952037][ C2] ovl_open_realfile (fs/overlayfs/file.c:51) 
[ 12.952042][ C2] ovl_open (fs/overlayfs/file.c:222) 
[ 12.952045][ C2] ? __pfx_ovl_open (fs/overlayfs/file.c:199) 
[ 12.952048][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 12.952053][ C2] do_dentry_open (fs/open.c:964) 
[ 12.952056][ C2] ? __pfx_ovl_open (fs/overlayfs/file.c:199) 
[ 12.952061][ C2] vfs_open (fs/open.c:1094) 
[ 12.952065][ C2] do_open (fs/namei.c:3888) 
[ 12.952070][ C2] path_openat (fs/namei.c:4046) 
[ 12.952074][ C2] ? __pfx_path_openat (fs/namei.c:4028) 
[ 12.952076][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 12.952081][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 12.952086][ C2] do_filp_open (fs/namei.c:4073) 
[ 12.952089][ C2] ? __pfx_do_filp_open (fs/namei.c:4067) 
[ 12.952092][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 12.952095][ C2] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 12.952100][ C2] ? __pfx_page_put_link (fs/namei.c:5478) 
[ 12.952105][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.952109][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.952112][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 12.952116][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.952121][ C2] do_open_execat (fs/exec.c:833) 
[ 12.952124][ C2] ? __pfx_do_open_execat (fs/exec.c:815) 
[ 12.952128][ C2] ? getname_kernel (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 fs/namei.c:132 fs/namei.c:271) 
[ 12.952132][ C2] open_exec (fs/exec.c:871) 
[ 12.952135][ C2] load_elf_binary (fs/binfmt_elf.c:893) 
[ 12.952139][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 12.952145][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.952147][ C2] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 12.952150][ C2] ? exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.952155][ C2] exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.952159][ C2] ? __pfx_exec_binprm (fs/exec.c:1734) 
[ 12.952161][ C2] ? bprm_execve (fs/exec.c:1792 fs/exec.c:1778) 
[ 12.952166][ C2] bprm_execve (fs/exec.c:1802 fs/exec.c:1778) 
[ 12.952169][ C2] kernel_execve (fs/exec.c:1968) 
[ 12.952173][ C2] call_usermodehelper_exec_async (kernel/umh.c:113) 
[ 12.952177][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.952180][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.952183][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.952186][ C2] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 12.952189][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.952192][ C2] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   12.980849][    C2] RCU nest depth: 0, expected: 0
| [   12.981064][    C2] INFO: lockdep is turned off.
| [   12.981421][    C2] Preemption disabled at:
| [ 12.981423][ C2] handle_softirqs (kernel/softirq.c:553) 
[   12.981875][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.981877][    C2] Call Trace:
[   12.981879][    C2]  <IRQ>
[ 12.981881][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.981887][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 12.981894][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 12.981898][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 12.981901][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 12.981905][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.981911][ 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) 
[ 12.981915][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 12.981918][ 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) 
[ 12.981921][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 12.981927][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 12.981930][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 12.981934][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 12.981936][ 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) 
[ 12.981941][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.981945][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 12.981947][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.981950][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 12.981954][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.981958][ C2] ? vma_interval_tree_iter_next (mm/interval_tree.c:23 (discriminator 7)) 
[ 12.981962][ C2] ? unmap_mapping_pages (mm/memory.c:3957 mm/memory.c:4029) 
[ 12.981966][ C2] ? invalidate_inode_pages2_range (mm/truncate.c:687) 
[ 12.981970][ C2] ? fuse_open (fs/fuse/file.c:280) 
[ 12.981973][ C2] ? do_dentry_open (fs/open.c:964) 
[ 12.981977][ C2] ? vfs_open (fs/open.c:1094) 
[ 12.981980][ C2] ? backing_file_open (fs/backing-file.c:45) 
[ 12.981984][ C2] ? ovl_open_realfile (fs/overlayfs/file.c:51) 
[ 12.981990][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.981994][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 12.981998][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.982002][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.982007][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 12.982011][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.982015][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 12.982021][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 12.982026][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.982031][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.982035][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.982038][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   12.982041][    C2]  </IRQ>
[   12.982043][    C2]  <TASK>
[ 12.982044][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.982047][ C2] RIP: 0010:vma_interval_tree_iter_next (mm/interval_tree.c:23 (discriminator 7)) 
[ 12.982050][ C2] Code: 2e e9 d6 00 00 00 48 8d 7b 08 4c 8d bb 50 ff ff ff 48 89 f8 4c 89 fd 48 c1 e8 03 42 80 3c 28 00 0f 85 ef 00 00 00 4c 8b 73 08 <4d> 39 e6 75 3b 4c 8d a5 b0 00 00 00 4c 89 e0 48 c1 e8 03 42 80 3c
All code
========
   0:	2e e9 d6 00 00 00    	cs jmp 0xdc
   6:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
   a:	4c 8d bb 50 ff ff ff 	lea    -0xb0(%rbx),%r15
  11:	48 89 f8             	mov    %rdi,%rax
  14:	4c 89 fd             	mov    %r15,%rbp
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  20:	0f 85 ef 00 00 00    	jne    0x115
  26:	4c 8b 73 08          	mov    0x8(%rbx),%r14
  2a:*	4d 39 e6             	cmp    %r12,%r14		<-- trapping instruction
  2d:	75 3b                	jne    0x6a
  2f:	4c 8d a5 b0 00 00 00 	lea    0xb0(%rbp),%r12
  36:	4c 89 e0             	mov    %r12,%rax
  39:	48 c1 e8 03          	shr    $0x3,%rax
  3d:	42                   	rex.X
  3e:	80                   	.byte 0x80
  3f:	3c                   	.byte 0x3c

Code starting with the faulting instruction
===========================================
   0:	4d 39 e6             	cmp    %r12,%r14
   3:	75 3b                	jne    0x40
   5:	4c 8d a5 b0 00 00 00 	lea    0xb0(%rbp),%r12
   c:	4c 89 e0             	mov    %r12,%rax
   f:	48 c1 e8 03          	shr    $0x3,%rax
  13:	42                   	rex.X
  14:	80                   	.byte 0x80
  15:	3c                   	.byte 0x3c
[   12.982053][    C2] RSP: 0018:ffffc900004e7158 EFLAGS: 00000246
[   12.982056][    C2] RAX: 1ffff1100172d2bf RBX: ffff88800b9695f0 RCX: 1ffff11001730057
[   12.982058][    C2] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff88800b9695f8
[   12.982060][    C2] RBP: ffff88800b969540 R08: 0000000000000001 R09: ffffed1000992ba8
[   12.982062][    C2] R10: ffff888004c95d43 R11: dffffc0000000000 R12: ffff8880096977b0
[   12.982063][    C2] R13: dffffc0000000000 R14: ffff88800a2602b0 R15: ffff88800b969540
[ 12.982071][ C2] unmap_mapping_pages (mm/memory.c:3957 mm/memory.c:4029) 
[ 12.982076][ C2] ? __pfx_unmap_mapping_pages (mm/memory.c:4018) 
[ 12.982079][ C2] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 12.982083][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 12.982088][ C2] invalidate_inode_pages2_range (mm/truncate.c:687) 
[ 12.982092][ C2] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:1070) 
[ 12.982098][ C2] ? __pfx_invalidate_inode_pages2_range (mm/truncate.c:649) 
[ 12.982101][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 12.982105][ C2] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 12.982116][ 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) 
[ 12.982125][ C2] ? fuse_file_io_open (fs/fuse/iomode.c:240) 
[ 12.982131][ C2] fuse_open (fs/fuse/file.c:280) 
[ 12.982135][ C2] do_dentry_open (fs/open.c:964) 
[ 12.982138][ C2] ? __pfx_fuse_open (fs/fuse/file.c:234) 
[ 12.982142][ C2] vfs_open (fs/open.c:1094) 
[ 12.982147][ C2] backing_file_open (fs/backing-file.c:45) 
[ 12.982149][ C2] ? inode_owner_or_capable (./include/linux/mnt_idmapping.h:87 fs/inode.c:2591) 
[ 12.982154][ C2] ovl_open_realfile (fs/overlayfs/file.c:51) 
[ 12.982159][ C2] ovl_open (fs/overlayfs/file.c:222) 
[ 12.982162][ C2] ? __pfx_ovl_open (fs/overlayfs/file.c:199) 
[ 12.982165][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 12.982170][ C2] do_dentry_open (fs/open.c:964) 
[ 12.982173][ C2] ? __pfx_ovl_open (fs/overlayfs/file.c:199) 
[ 12.982178][ C2] vfs_open (fs/open.c:1094) 
[ 12.982182][ C2] do_open (fs/namei.c:3888) 
[ 12.982187][ C2] path_openat (fs/namei.c:4046) 
[ 12.982191][ C2] ? __pfx_path_openat (fs/namei.c:4028) 
[ 12.982194][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 12.982199][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 12.982203][ C2] do_filp_open (fs/namei.c:4073) 
[ 12.982206][ C2] ? __pfx_do_filp_open (fs/namei.c:4067) 
[ 12.982209][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 12.982212][ C2] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 12.982218][ C2] ? __pfx_page_put_link (fs/namei.c:5478) 
[ 12.982223][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.982227][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.982231][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 12.982234][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.982239][ C2] do_open_execat (fs/exec.c:833) 
[ 12.982242][ C2] ? __pfx_do_open_execat (fs/exec.c:815) 
[ 12.982247][ C2] ? getname_kernel (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 fs/namei.c:132 fs/namei.c:271) 
[ 12.982251][ C2] open_exec (fs/exec.c:871) 
[ 12.982254][ C2] load_elf_binary (fs/binfmt_elf.c:893) 
[ 12.982258][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 12.982264][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.982267][ C2] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 12.982269][ C2] ? exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.982274][ C2] exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 12.982278][ C2] ? __pfx_exec_binprm (fs/exec.c:1734) 
[ 12.982280][ C2] ? bprm_execve (fs/exec.c:1792 fs/exec.c:1778) 
[ 12.982285][ C2] bprm_execve (fs/exec.c:1802 fs/exec.c:1778) 
[ 12.982288][ C2] kernel_execve (fs/exec.c:1968) 
[ 12.982292][ C2] call_usermodehelper_exec_async (kernel/umh.c:113) 
[ 12.982296][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.982299][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.982302][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 12.982305][ C2] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 12.982309][ C2] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 


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