======================================
| [ 16.425324][ C0] #2: ffff888009662020 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap (./include/linux/seqlock.h:431 ./include/linux/mmap_lock.h:82 ./include/linux/mmap_lock.h:129 mm/mmap.c:1292) 
| [ 16.425701][ C0] #3: ffffffff9f974480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   16.426067][    C0]
| [   16.426067][    C0] stack backtrace:
[   16.426332][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.426334][    C0] Call Trace:
[   16.426336][    C0]  <IRQ>
[ 16.426337][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.426343][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 16.426350][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 16.426355][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 16.426361][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 16.426365][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 16.426369][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 16.426373][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 16.426378][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 16.426381][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 16.426386][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.426392][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 16.426395][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 16.426399][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.426403][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 16.426406][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 16.426410][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 16.426414][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.426420][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.426423][ C0] ? __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:2333) 
[ 16.426428][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.426431][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.426434][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.426436][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 16.426440][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.426444][ C0] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3108) 
[ 16.426448][ C0] ? __put_anon_vma (mm/rmap.c:2757) 
[ 16.426452][ C0] ? unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 16.426454][ C0] ? free_pgtables (mm/memory.c:392) 
[ 16.426459][ C0] ? exit_mmap (mm/mmap.c:1297) 
[ 16.426461][ C0] ? mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
[ 16.426466][ C0] ? exec_mmap (fs/exec.c:1014) 
[ 16.426469][ C0] ? begin_new_exec (fs/exec.c:1264) 
[ 16.426474][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.426477][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.426482][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.426484][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.426488][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 16.426492][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.426496][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 16.426499][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 16.426502][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 16.426507][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.426510][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.426514][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.426517][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.426519][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   16.426522][    C0]  </IRQ>
[   16.426523][    C0]  <TASK>
[ 16.426525][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.426528][ C0] RIP: 0010:__call_rcu_common.constprop.0 (kernel/rcu/tree.c:3108) 
[ 16.426533][ C0] Code: 00 00 4c 89 ea 48 89 ee 4c 89 e7 e8 cd ac ff ff 48 85 db 75 24 9c 58 f6 c4 02 0f 85 6f 02 00 00 48 85 db 74 01 fb 48 83 c4 08 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 6f 69 1b 00 eb d5
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	4c 89 ea             	mov    %r13,%rdx
   5:	48 89 ee             	mov    %rbp,%rsi
   8:	4c 89 e7             	mov    %r12,%rdi
   b:	e8 cd ac ff ff       	call   0xffffffffffffacdd
  10:	48 85 db             	test   %rbx,%rbx
  13:	75 24                	jne    0x39
  15:	9c                   	pushf
  16:	58                   	pop    %rax
  17:	f6 c4 02             	test   $0x2,%ah
  1a:	0f 85 6f 02 00 00    	jne    0x28f
  20:	48 85 db             	test   %rbx,%rbx
  23:	74 01                	je     0x26
  25:	fb                   	sti
  26:	48 83 c4 08          	add    $0x8,%rsp
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	5d                   	pop    %rbp
  2c:	41 5c                	pop    %r12
  2e:	41 5d                	pop    %r13
  30:	41 5e                	pop    %r14
  32:	41 5f                	pop    %r15
  34:	c3                   	ret
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	e8 6f 69 1b 00       	call   0x1b69ad
  3e:	eb d5                	jmp    0x15

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	41 5d                	pop    %r13
   6:	41 5e                	pop    %r14
   8:	41 5f                	pop    %r15
   a:	c3                   	ret
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	e8 6f 69 1b 00       	call   0x1b6983
  14:	eb d5                	jmp    0xffffffffffffffeb
[   16.426535][    C0] RSP: 0018:ffffc90000ad7768 EFLAGS: 00000282
[   16.426539][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040
[   16.426541][    C0] RDX: 0000000000000000 RSI: ffffffff9f485f31 RDI: ffffffff9ec50ce0
[   16.426542][    C0] RBP: ffff88800a4e9620 R08: 0000000000000001 R09: 0000000000000001
[   16.426544][    C0] R10: ffffffffa03d8197 R11: ffffffff9f9745a0 R12: ffff888036039700
[   16.426546][    C0] R13: 0000000000000286 R14: 0000000000000000 R15: ffffffff9f988940
[ 16.426553][ C0] __put_anon_vma (mm/rmap.c:2757) 
[ 16.426556][ C0] unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 16.426561][ C0] free_pgtables (mm/memory.c:392) 
[ 16.426566][ C0] ? __pfx_free_pgtables (mm/memory.c:349) 
[ 16.426569][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 16.426573][ C0] ? exit_mmap (./include/linux/seqlock.h:431 ./include/linux/mmap_lock.h:82 ./include/linux/mmap_lock.h:129 mm/mmap.c:1292) 
[ 16.426576][ C0] ? down_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1313 kernel/locking/rwsem.c:1578) 
[ 16.426579][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.426584][ C0] exit_mmap (mm/mmap.c:1297) 
[ 16.426587][ C0] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 16.426592][ C0] ? __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) 
[ 16.426602][ C0] mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
[ 16.426606][ C0] exec_mmap (fs/exec.c:1014) 
[ 16.426610][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.426614][ C0] begin_new_exec (fs/exec.c:1264) 
[ 16.426618][ C0] load_elf_binary (fs/binfmt_elf.c:1002) 
[ 16.426625][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 16.426630][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 16.426633][ C0] ? __pfx_load_elf_binary (fs/binfmt_elf.c:825) 
[ 16.426636][ C0] ? exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 16.426642][ C0] exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 16.426647][ C0] ? __pfx_exec_binprm (fs/exec.c:1794) 
[ 16.426650][ C0] ? bprm_execve (fs/exec.c:1852 fs/exec.c:1838) 
[ 16.426656][ C0] bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 16.426660][ C0] do_execveat_common.isra.0 (fs/exec.c:1968) 
[ 16.426665][ C0] __x64_sys_execve (fs/exec.c:2113) 
[ 16.426669][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.426674][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.426676][    C0] RIP: 0033:0x7f276ca7d40b
[ 16.426683][ C0] Code: Unable to access opcode bytes at 0x7f276ca7d3e1.

Code starting with the faulting instruction
===========================================
[   16.426685][    C0] RSP: 002b:00007ffc6e287c28 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   16.426687][    C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f276ca7d40b
[   16.426689][    C0] RDX: 000055fde1b76640 RSI: 000055fde1b69d90 RDI: 000055fde1b83a00
[   16.426691][    C0] RBP: 000055fde1b83a00 R08: 000055fde1b5e4d0 R09: 0000000000000020
[   16.426693][    C0] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff
[   16.426695][    C0] R13: 000055fde1b69d90 R14: 000055fde1b76640 R15: 000055fde1b65660
| [   16.450495][    C0] RCU nest depth: 0, expected: 0
| [   16.450691][    C0] INFO: lockdep is turned off.
| [   16.450888][    C0] Preemption disabled at:
| [ 16.450890][ C0] handle_softirqs (kernel/softirq.c:553) 
[   16.451292][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.451294][    C0] Call Trace:
[   16.451296][    C0]  <IRQ>
[ 16.451298][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.451304][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 16.451309][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.451313][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.451316][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.451320][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.451326][ C0] ? 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) 
[ 16.451330][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.451333][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.451337][ C0] ? 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) 
[ 16.451341][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.451344][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.451349][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.451352][ C0] ? __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:2333) 
[ 16.451357][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.451361][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.451364][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.451366][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 16.451371][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.451375][ C0] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3108) 
[ 16.451379][ C0] ? __put_anon_vma (mm/rmap.c:2757) 
[ 16.451383][ C0] ? unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 16.451386][ C0] ? free_pgtables (mm/memory.c:392) 
[ 16.451390][ C0] ? exit_mmap (mm/mmap.c:1297) 
[ 16.451393][ C0] ? mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
[ 16.451397][ C0] ? exec_mmap (fs/exec.c:1014) 
[ 16.451401][ C0] ? begin_new_exec (fs/exec.c:1264) 
[ 16.451406][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.451409][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.451413][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.451416][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.451419][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 16.451424][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.451428][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 16.451432][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 16.451435][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 16.451440][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.451443][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.451448][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.451450][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.451452][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   16.451456][    C0]  </IRQ>
[   16.451457][    C0]  <TASK>
[ 16.451458][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.451461][ C0] RIP: 0010:__call_rcu_common.constprop.0 (kernel/rcu/tree.c:3108) 
[ 16.451468][ C0] Code: 00 00 4c 89 ea 48 89 ee 4c 89 e7 e8 cd ac ff ff 48 85 db 75 24 9c 58 f6 c4 02 0f 85 6f 02 00 00 48 85 db 74 01 fb 48 83 c4 08 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 6f 69 1b 00 eb d5
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	4c 89 ea             	mov    %r13,%rdx
   5:	48 89 ee             	mov    %rbp,%rsi
   8:	4c 89 e7             	mov    %r12,%rdi
   b:	e8 cd ac ff ff       	call   0xffffffffffffacdd
  10:	48 85 db             	test   %rbx,%rbx
  13:	75 24                	jne    0x39
  15:	9c                   	pushf
  16:	58                   	pop    %rax
  17:	f6 c4 02             	test   $0x2,%ah
  1a:	0f 85 6f 02 00 00    	jne    0x28f
  20:	48 85 db             	test   %rbx,%rbx
  23:	74 01                	je     0x26
  25:	fb                   	sti
  26:	48 83 c4 08          	add    $0x8,%rsp
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	5d                   	pop    %rbp
  2c:	41 5c                	pop    %r12
  2e:	41 5d                	pop    %r13
  30:	41 5e                	pop    %r14
  32:	41 5f                	pop    %r15
  34:	c3                   	ret
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	e8 6f 69 1b 00       	call   0x1b69ad
  3e:	eb d5                	jmp    0x15

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	41 5d                	pop    %r13
   6:	41 5e                	pop    %r14
   8:	41 5f                	pop    %r15
   a:	c3                   	ret
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	e8 6f 69 1b 00       	call   0x1b6983
  14:	eb d5                	jmp    0xffffffffffffffeb
[   16.451471][    C0] RSP: 0018:ffffc90000ad7768 EFLAGS: 00000282
[   16.451474][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040
[   16.451476][    C0] RDX: 0000000000000000 RSI: ffffffff9f485f31 RDI: ffffffff9ec50ce0
[   16.451478][    C0] RBP: ffff88800a4e9620 R08: 0000000000000001 R09: 0000000000000001
[   16.451480][    C0] R10: ffffffffa03d8197 R11: ffffffff9f9745a0 R12: ffff888036039700
[   16.451482][    C0] R13: 0000000000000286 R14: 0000000000000000 R15: ffffffff9f988940
[ 16.451489][ C0] __put_anon_vma (mm/rmap.c:2757) 
[ 16.451492][ C0] unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 16.451497][ C0] free_pgtables (mm/memory.c:392) 
[ 16.451503][ C0] ? __pfx_free_pgtables (mm/memory.c:349) 
[ 16.451505][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 16.451509][ C0] ? exit_mmap (./include/linux/seqlock.h:431 ./include/linux/mmap_lock.h:82 ./include/linux/mmap_lock.h:129 mm/mmap.c:1292) 
[ 16.451512][ C0] ? down_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1313 kernel/locking/rwsem.c:1578) 
[ 16.451515][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.451519][ C0] exit_mmap (mm/mmap.c:1297) 
[ 16.451523][ C0] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 16.451528][ C0] ? __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) 
[ 16.451538][ C0] mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
[ 16.451542][ C0] exec_mmap (fs/exec.c:1014) 
[ 16.451546][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.451550][ C0] begin_new_exec (fs/exec.c:1264) 
[ 16.451554][ C0] load_elf_binary (fs/binfmt_elf.c:1002) 
[ 16.451561][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 16.451567][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 16.451570][ C0] ? __pfx_load_elf_binary (fs/binfmt_elf.c:825) 
[ 16.451573][ C0] ? exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 16.451579][ C0] exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 16.451584][ C0] ? __pfx_exec_binprm (fs/exec.c:1794) 
[ 16.451587][ C0] ? bprm_execve (fs/exec.c:1852 fs/exec.c:1838) 
[ 16.451592][ C0] bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 16.451596][ C0] do_execveat_common.isra.0 (fs/exec.c:1968) 
[ 16.451602][ C0] __x64_sys_execve (fs/exec.c:2113) 
[ 16.451604][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.451610][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.451612][    C0] RIP: 0033:0x7f276ca7d40b
[ 16.451619][ C0] Code: Unable to access opcode bytes at 0x7f276ca7d3e1.

Code starting with the faulting instruction
===========================================
[   16.451620][    C0] RSP: 002b:00007ffc6e287c28 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   16.451623][    C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f276ca7d40b
[   16.451625][    C0] RDX: 000055fde1b76640 RSI: 000055fde1b69d90 RDI: 000055fde1b83a00
[   16.451627][    C0] RBP: 000055fde1b83a00 R08: 000055fde1b5e4d0 R09: 0000000000000020
[   16.451628][    C0] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff
[   16.451630][    C0] R13: 000055fde1b69d90 R14: 000055fde1b76640 R15: 000055fde1b65660
| [   18.710965][    C3] INFO: lockdep is turned off.
| [   18.711262][    C3] Preemption disabled at:
| [ 18.711265][ C3] copy_fpstate_to_sigframe (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 arch/x86/kernel/fpu/signal.c:223) 
| [   18.711946][    C3] Tainted: [W]=WARN
[   18.711948][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.711951][    C3] Call Trace:
[   18.711954][    C3]  <IRQ>
[ 18.711957][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.711968][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 18.711977][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.711983][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.711987][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 18.711993][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.712002][ 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) 
[ 18.712009][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 18.712013][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.712019][ 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) 
[ 18.712027][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.712032][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 18.712039][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.712044][ 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:2333) 
[ 18.712052][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.712057][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.712062][ C3] ? __local_bh_enable_ip (kernel/softirq.c:407) 
[ 18.712067][ C3] ? copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:231) 
[ 18.712074][ C3] ? get_sigframe (arch/x86/kernel/signal.c:163) 
[ 18.712080][ C3] ? x64_setup_rt_frame (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 arch/x86/kernel/signal_64.c:153 arch/x86/kernel/signal_64.c:176) 
[ 18.712085][ C3] ? handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) 
[ 18.712089][ C3] ? arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 18.712094][ C3] ? syscall_exit_to_user_mode (kernel/entry/common.c:113 ./include/linux/entry-common.h:329 kernel/entry/common.c:207 kernel/entry/common.c:218) 
[ 18.712100][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:113) 
[ 18.712106][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 18.712113][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.712117][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.712125][ C3] __put_net (net/core/net_namespace.c:732) 
[ 18.712130][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 18.712135][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.712140][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.712148][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 18.712155][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.712160][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.712170][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 18.712176][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 18.712183][ C3] ? copy_fpstate_to_sigframe (./include/linux/bottom_half.h:33 ./arch/x86/include/asm/fpu/api.h:77 arch/x86/kernel/fpu/signal.c:229) 
[ 18.712190][ C3] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) 
[   18.712194][    C3]  </IRQ>
[   18.712196][    C3]  <TASK>
[ 18.712199][ C3] __local_bh_enable_ip (kernel/softirq.c:407) 
[ 18.712204][ C3] copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:231) 
[ 18.712214][ C3] get_sigframe (arch/x86/kernel/signal.c:163) 
[ 18.712219][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.712226][ C3] ? __pfx_get_sigframe (arch/x86/kernel/signal.c:96) 
[ 18.712232][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.712238][ C3] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21)) 
[ 18.712248][ C3] x64_setup_rt_frame (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 arch/x86/kernel/signal_64.c:153 arch/x86/kernel/signal_64.c:176) 
[ 18.712255][ C3] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) 
[ 18.712262][ C3] ? __pfx_x64_setup_rt_frame (arch/x86/kernel/signal_64.c:165) 
[ 18.712267][ C3] ? __pfx___schedule (kernel/sched/core.c:6646) 
[ 18.712277][ C3] handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) 
[ 18.712283][ C3] arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 18.712289][ C3] ? __pfx_arch_do_signal_or_restart (arch/x86/kernel/signal.c:334) 
[ 18.712299][ C3] ? __x64_sys_rt_sigsuspend (kernel/signal.c:4858 kernel/signal.c:4848 kernel/signal.c:4848) 
[ 18.712307][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.712314][ C3] syscall_exit_to_user_mode (kernel/entry/common.c:113 ./include/linux/entry-common.h:329 kernel/entry/common.c:207 kernel/entry/common.c:218) 
[ 18.712320][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:113) 
[ 18.712327][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.712331][    C3] RIP: 0033:0x7f1389c7106c
[ 18.712342][ C3] Code: Unable to access opcode bytes at 0x7f1389c71042.

Code starting with the faulting instruction
===========================================
[   18.712344][    C3] RSP: 002b:00007ffc9b1d87f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000082
[   18.712351][    C3] RAX: fffffffffffffffc RBX: 00007ffc9b1d8838 RCX: 00007f1389c7106c
[   18.712355][    C3] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00007ffc9b1d8860
[   18.712358][    C3] RBP: 00007ffc9b1d88e0 R08: 00007ffc9b1d88e0 R09: 0000000000000000
[   18.712361][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9b1d8860


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