======================================
| [ 15.181287][ C3] #0: ffff8880097219b8 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: bprm_execve (fs/exec.c:1409 fs/exec.c:1782) 
| [ 15.181706][ C3] #1: ffffffff8a7774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.182095][    C3]
| [   15.182095][    C3] stack backtrace:
[   15.182389][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.182391][    C3] Call Trace:
[   15.182393][    C3]  <IRQ>
[ 15.182397][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.182405][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.182411][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.182416][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.182423][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.182427][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.182431][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.182434][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.182438][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.182442][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.182446][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.182450][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.182457][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.182459][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.182463][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.182468][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.182470][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 15.182474][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.182478][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.182484][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.182487][ 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) 
[ 15.182494][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.182497][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.182500][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.182504][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.182509][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.182514][ C3] ? unwind_get_return_address (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:366) 
[ 15.182517][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 15.182521][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 15.182525][ C3] ? set_track_prepare (mm/slub.c:936) 
[ 15.182531][ C3] ? __alloc_object (mm/kmemleak.c:697) 
[ 15.182535][ C3] ? __create_object (mm/kmemleak.c:770) 
[ 15.182538][ C3] ? kmem_cache_alloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4203) 
[ 15.182545][ C3] ? getname_kernel (fs/namei.c:249) 
[ 15.182552][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.182557][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.182561][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.182564][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.182568][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.182572][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.182575][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 15.182578][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 15.182582][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.182586][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.182592][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.182598][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.182601][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.182604][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.182608][    C3]  </IRQ>
[   15.182610][    C3]  <TASK>
[ 15.182611][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.182614][ C3] RIP: 0010:unwind_get_return_address (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:366) 
[ 15.182619][ C3] Code: 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 55 48 c1 ea 03 53 48 89 fb 0f b6 04 02 84 c0 74 04 3c 03
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 0f                	add    %cl,(%rdi)
   4:	1f                   	(bad)
   5:	40 00 90 90 90 90 90 	rex add %dl,-0x6f6f6f70(%rax)
   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:	f3 0f 1e fa          	endbr64
  1b:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	48 89 fa             	mov    %rdi,%rdx		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	48 c1 ea 03          	shr    $0x3,%rdx
  32:	53                   	push   %rbx
  33:	48 89 fb             	mov    %rdi,%rbx
  36:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  3a:	84 c0                	test   %al,%al
  3c:	74 04                	je     0x42
  3e:	3c 03                	cmp    $0x3,%al

Code starting with the faulting instruction
===========================================
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	55                   	push   %rbp
   4:	48 c1 ea 03          	shr    $0x3,%rdx
   8:	53                   	push   %rbx
   9:	48 89 fb             	mov    %rdi,%rbx
   c:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  10:	84 c0                	test   %al,%al
  12:	74 04                	je     0x18
  14:	3c 03                	cmp    $0x3,%al
[   15.182621][    C3] RSP: 0018:ffffc900004d7978 EFLAGS: 00000202
[   15.182625][    C3] RAX: dffffc0000000000 RBX: ffffffff870c8380 RCX: ffffc900004d782c
[   15.182627][    C3] RDX: 0000000000000000 RSI: ffffffff8a27ab82 RDI: ffffc900004d7980
[   15.182629][    C3] RBP: ffffc900004d7a18 R08: 0000000000000000 R09: ffffc900004d79c1
[   15.182631][    C3] R10: 0000000000000000 R11: ffffc900004d79c0 R12: ffffc900004d7a48
[   15.182632][    C3] R13: 0000000000000000 R14: ffff88800972c5c0 R15: 0000000000000cc0
[ 15.182635][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 15.182641][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 15.182646][ C3] ? getname_kernel (fs/namei.c:249) 
[ 15.182650][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 15.182653][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 15.182658][ C3] set_track_prepare (mm/slub.c:936) 
[ 15.182662][ C3] ? kmem_cache_alloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4203) 
[ 15.182665][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.182669][ C3] ? trace_kmem_cache_alloc (./include/trace/events/kmem.h:12 (discriminator 21)) 
[ 15.182672][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 15.182677][ C3] __alloc_object (mm/kmemleak.c:697) 
[ 15.182682][ C3] __create_object (mm/kmemleak.c:770) 
[ 15.182685][ C3] kmem_cache_alloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4203) 
[ 15.182691][ C3] getname_kernel (fs/namei.c:249) 
[ 15.182695][ C3] open_exec (fs/exec.c:866) 
[ 15.182698][ C3] load_elf_binary (fs/binfmt_elf.c:893) 
[ 15.182704][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.182709][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.182712][ C3] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 15.182714][ C3] ? exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 15.182720][ C3] exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 15.182724][ C3] ? __pfx_exec_binprm (fs/exec.c:1734) 
[ 15.182726][ C3] ? bprm_execve (fs/exec.c:1792 fs/exec.c:1778) 
[ 15.182731][ C3] bprm_execve (fs/exec.c:1802 fs/exec.c:1778) 
[ 15.182734][ C3] kernel_execve (fs/exec.c:1968) 
[ 15.182738][ C3] call_usermodehelper_exec_async (kernel/umh.c:113) 
[ 15.182744][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.182747][ C3] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 15.182750][ C3] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 15.182753][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 15.182758][ C3] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 15.182761][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   15.208807][    C3] RCU nest depth: 0, expected: 0
| [   15.209141][    C3] INFO: lockdep is turned off.
| [   15.209356][    C3] Preemption disabled at:
| [ 15.209358][ C3] handle_softirqs (kernel/softirq.c:553) 
[   15.209797][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.209800][    C3] Call Trace:
[   15.209802][    C3]  <IRQ>
[ 15.209807][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.209816][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 15.209826][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.209831][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.209834][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.209841][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.209849][ 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) 
[ 15.209854][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.209857][ 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) 
[ 15.209860][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.209867][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.209870][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.209876][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.209879][ 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) 
[ 15.209885][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.209891][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.209894][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.209897][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.209902][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.209908][ C3] ? unwind_get_return_address (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:366) 
[ 15.209913][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 15.209917][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 15.209922][ C3] ? set_track_prepare (mm/slub.c:936) 
[ 15.209928][ C3] ? __alloc_object (mm/kmemleak.c:697) 
[ 15.209931][ C3] ? __create_object (mm/kmemleak.c:770) 
[ 15.209934][ C3] ? kmem_cache_alloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4203) 
[ 15.209941][ C3] ? getname_kernel (fs/namei.c:249) 
[ 15.209949][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.209954][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.209959][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.209961][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.209965][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.209970][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.209974][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 15.209979][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 15.209982][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.209987][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.209992][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.209997][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.210001][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.210004][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.210007][    C3]  </IRQ>
[   15.210008][    C3]  <TASK>
[ 15.210010][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.210013][ C3] RIP: 0010:unwind_get_return_address (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:366) 
[ 15.210017][ C3] Code: 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 55 48 c1 ea 03 53 48 89 fb 0f b6 04 02 84 c0 74 04 3c 03
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 0f                	add    %cl,(%rdi)
   4:	1f                   	(bad)
   5:	40 00 90 90 90 90 90 	rex add %dl,-0x6f6f6f70(%rax)
   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:	f3 0f 1e fa          	endbr64
  1b:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	48 89 fa             	mov    %rdi,%rdx		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	48 c1 ea 03          	shr    $0x3,%rdx
  32:	53                   	push   %rbx
  33:	48 89 fb             	mov    %rdi,%rbx
  36:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  3a:	84 c0                	test   %al,%al
  3c:	74 04                	je     0x42
  3e:	3c 03                	cmp    $0x3,%al

Code starting with the faulting instruction
===========================================
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	55                   	push   %rbp
   4:	48 c1 ea 03          	shr    $0x3,%rdx
   8:	53                   	push   %rbx
   9:	48 89 fb             	mov    %rdi,%rbx
   c:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  10:	84 c0                	test   %al,%al
  12:	74 04                	je     0x18
  14:	3c 03                	cmp    $0x3,%al
[   15.210020][    C3] RSP: 0018:ffffc900004d7978 EFLAGS: 00000202
[   15.210025][    C3] RAX: dffffc0000000000 RBX: ffffffff870c8380 RCX: ffffc900004d782c
[   15.210027][    C3] RDX: 0000000000000000 RSI: ffffffff8a27ab82 RDI: ffffc900004d7980
[   15.210028][    C3] RBP: ffffc900004d7a18 R08: 0000000000000000 R09: ffffc900004d79c1
[   15.210030][    C3] R10: 0000000000000000 R11: ffffc900004d79c0 R12: ffffc900004d7a48
[   15.210032][    C3] R13: 0000000000000000 R14: ffff88800972c5c0 R15: 0000000000000cc0
[ 15.210035][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 15.210041][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 15.210045][ C3] ? getname_kernel (fs/namei.c:249) 
[ 15.210050][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 15.210053][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 15.210058][ C3] set_track_prepare (mm/slub.c:936) 
[ 15.210061][ C3] ? kmem_cache_alloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4203) 
[ 15.210066][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.210069][ C3] ? trace_kmem_cache_alloc (./include/trace/events/kmem.h:12 (discriminator 21)) 
[ 15.210073][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 15.210078][ C3] __alloc_object (mm/kmemleak.c:697) 
[ 15.210082][ C3] __create_object (mm/kmemleak.c:770) 
[ 15.210086][ C3] kmem_cache_alloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4203) 
[ 15.210091][ C3] getname_kernel (fs/namei.c:249) 
[ 15.210095][ C3] open_exec (fs/exec.c:866) 
[ 15.210098][ C3] load_elf_binary (fs/binfmt_elf.c:893) 
[ 15.210105][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.210110][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.210113][ C3] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 15.210115][ C3] ? exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 15.210120][ C3] exec_binprm (fs/exec.c:1718 fs/exec.c:1750) 
[ 15.210125][ C3] ? __pfx_exec_binprm (fs/exec.c:1734) 
[ 15.210127][ C3] ? bprm_execve (fs/exec.c:1792 fs/exec.c:1778) 
[ 15.210132][ C3] bprm_execve (fs/exec.c:1802 fs/exec.c:1778) 
[ 15.210135][ C3] kernel_execve (fs/exec.c:1968) 
[ 15.210139][ C3] call_usermodehelper_exec_async (kernel/umh.c:113) 
[ 15.210144][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.210148][ C3] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 15.210151][ C3] ? __pfx_call_usermodehelper_exec_async (kernel/umh.c:64) 
[ 15.210154][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 15.210159][ C3] ? __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