======================================
| [   15.866657][    C0] 1 lock held by ksft_runner.sh/255:
| [ 15.866837][ C0] #0: ffffffffb3974480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.867155][    C0]
| [   15.867155][    C0] stack backtrace:
[   15.867383][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.867385][    C0] Call Trace:
[   15.867387][    C0]  <IRQ>
[ 15.867389][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.867394][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.867399][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.867404][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.867409][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.867413][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.867417][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.867421][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.867425][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.867430][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.867434][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.867438][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.867443][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.867446][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.867451][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.867454][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.867457][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 15.867461][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.867464][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.867469][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.867472][ 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) 
[ 15.867478][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.867481][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.867484][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.867486][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.867491][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.867495][ C0] ? fuse_flush (fs/fuse/fuse_i.h:1237 fs/fuse/file.c:557) 
[ 15.867499][ C0] ? ovl_flush (fs/overlayfs/file.c:649) 
[ 15.867503][ C0] ? filp_flush (fs/open.c:1541) 
[ 15.867506][ C0] ? __x64_sys_close (fs/open.c:1581 fs/open.c:1566 fs/open.c:1566) 
[ 15.867509][ C0] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.867513][ C0] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 15.867518][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.867522][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.867526][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.867528][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.867532][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.867536][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.867540][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.867543][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 15.867547][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.867552][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.867555][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.867559][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.867562][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.867564][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.867568][    C0]  </IRQ>
[   15.867569][    C0]  <TASK>
[ 15.867571][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.867574][ C0] RIP: 0010:fuse_flush (fs/fuse/fuse_i.h:1237 fs/fuse/file.c:557) 
[ 15.867578][ C0] Code: 48 b8 00 00 00 00 00 fc ff df c7 84 24 90 00 00 00 19 00 00 00 48 c1 ea 03 80 3c 02 00 0f 85 ea 01 00 00 49 8b 86 58 04 00 00 <48> 8b 54 24 08 4c 89 e6 48 c7 c7 a0 6c bd b3 80 8c 24 97 00 00 00
All code
========
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	c7 84 24 90 00 00 00 	movl   $0x19,0x90(%rsp)
  11:	19 00 00 00 
  15:	48 c1 ea 03          	shr    $0x3,%rdx
  19:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1d:	0f 85 ea 01 00 00    	jne    0x20d
  23:	49 8b 86 58 04 00 00 	mov    0x458(%r14),%rax
  2a:*	48 8b 54 24 08       	mov    0x8(%rsp),%rdx		<-- trapping instruction
  2f:	4c 89 e6             	mov    %r12,%rsi
  32:	48 c7 c7 a0 6c bd b3 	mov    $0xffffffffb3bd6ca0,%rdi
  39:	80                   	.byte 0x80
  3a:	8c 24 97             	mov    %fs,(%rdi,%rdx,4)
  3d:	00 00                	add    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 8b 54 24 08       	mov    0x8(%rsp),%rdx
   5:	4c 89 e6             	mov    %r12,%rsi
   8:	48 c7 c7 a0 6c bd b3 	mov    $0xffffffffb3bd6ca0,%rdi
   f:	80                   	.byte 0x80
  10:	8c 24 97             	mov    %fs,(%rdi,%rdx,4)
  13:	00 00                	add    %al,(%rax)
	...
[   15.867580][    C0] RSP: 0018:ffffc900006d7d10 EFLAGS: 00000246
[   15.867584][    C0] RAX: 00000000000001c0 RBX: 1ffff920000dafa5 RCX: 0000000000000000
[   15.867586][    C0] RDX: 1ffff11001404b73 RSI: ffff88800934a240 RDI: ffff88800a025b98
[   15.867587][    C0] RBP: ffff888009e70800 R08: 0000000000000000 R09: 0000000000000000
[   15.867589][    C0] R10: ffffc900006d7d60 R11: ffff88800a025d60 R12: ffff8880022cde40
[   15.867591][    C0] R13: ffff888008cd1000 R14: ffff88800a025740 R15: ffff88800a025cb0
[ 15.867597][ C0] ? __pfx_fuse_flush (fs/fuse/file.c:517) 
[ 15.867601][ C0] ? ovl_verify_lowerdata (fs/overlayfs/namei.c:1024) 
[ 15.867606][ C0] ? __pfx_ovl_verify_lowerdata (fs/overlayfs/namei.c:1017) 
[ 15.867612][ C0] ? ovl_real_file (fs/overlayfs/file.c:195) 
[ 15.867615][ C0] ? __pfx_ovl_real_file (fs/overlayfs/file.c:175) 
[ 15.867617][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.867620][ C0] ? file_close_fd (fs/file.c:845) 
[ 15.867625][ C0] ovl_flush (fs/overlayfs/file.c:649) 
[ 15.867628][ C0] filp_flush (fs/open.c:1541) 
[ 15.867631][ C0] __x64_sys_close (fs/open.c:1581 fs/open.c:1566 fs/open.c:1566) 
[ 15.867634][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.867639][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.867641][    C0] RIP: 0033:0x7f2180dce227
[ 15.867645][ C0] Code: ff e8 9d e3 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 e3 c9 f5 ff
All code
========
   0:	ff                   	ljmp   (bad)
   1:	e8 9d e3 01 00       	call   0x1e3a3
   6:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 03 00 00 00       	mov    $0x3,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 41                	ja     0x73
  32:	c3                   	ret
  33:	48 83 ec 18          	sub    $0x18,%rsp
  37:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  3b:	e8 e3 c9 f5 ff       	call   0xfffffffffff5ca23

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 41                	ja     0x49
   8:	c3                   	ret
   9:	48 83 ec 18          	sub    $0x18,%rsp
   d:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  11:	e8 e3 c9 f5 ff       	call   0xfffffffffff5c9f9
[   15.867647][    C0] RSP: 002b:00007ffd4031bc28 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   15.867650][    C0] RAX: ffffffffffffffda RBX: 00000000000000ff RCX: 00007f2180dce227
[   15.867652][    C0] RDX: 00000000000000ff RSI: 000055868c3fb010 RDI: 00000000000000ff
[   15.867654][    C0] RBP: 00007ffd4031bd60 R08: 000055868c40c050 R09: 0000000000000000
[   15.867656][    C0] R10: 00007f2180f0d008 R11: 0000000000000246 R12: 0000000000000000
[   15.867657][    C0] R13: 00007ffd4031bc60 R14: 0000558653e1df27 R15: 000055868c40a620
| [   15.885081][    C0] RCU nest depth: 0, expected: 0
| [   15.885248][    C0] INFO: lockdep is turned off.
| [   15.885413][    C0] Preemption disabled at:
| [ 15.885415][ C0] handle_softirqs (kernel/softirq.c:553) 
[   15.885763][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.885764][    C0] Call Trace:
[   15.885766][    C0]  <IRQ>
[ 15.885768][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.885774][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 15.885779][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.885783][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.885786][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.885790][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.885795][ 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) 
[ 15.885799][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.885802][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.885806][ 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) 
[ 15.885811][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.885813][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.885818][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.885821][ 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) 
[ 15.885827][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.885831][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.885834][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.885836][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.885840][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.885843][ C0] ? fuse_flush (fs/fuse/fuse_i.h:1237 fs/fuse/file.c:557) 
[ 15.885847][ C0] ? ovl_flush (fs/overlayfs/file.c:649) 
[ 15.885850][ C0] ? filp_flush (fs/open.c:1541) 
[ 15.885853][ C0] ? __x64_sys_close (fs/open.c:1581 fs/open.c:1566 fs/open.c:1566) 
[ 15.885857][ C0] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.885861][ C0] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 15.885866][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.885870][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.885873][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.885876][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.885880][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.885885][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.885889][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.885892][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 15.885895][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.885900][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.885904][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.885908][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.885910][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.885913][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.885916][    C0]  </IRQ>
[   15.885917][    C0]  <TASK>
[ 15.885918][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.885921][ C0] RIP: 0010:fuse_flush (fs/fuse/fuse_i.h:1237 fs/fuse/file.c:557) 
[ 15.885925][ C0] Code: 48 b8 00 00 00 00 00 fc ff df c7 84 24 90 00 00 00 19 00 00 00 48 c1 ea 03 80 3c 02 00 0f 85 ea 01 00 00 49 8b 86 58 04 00 00 <48> 8b 54 24 08 4c 89 e6 48 c7 c7 a0 6c bd b3 80 8c 24 97 00 00 00
All code
========
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	c7 84 24 90 00 00 00 	movl   $0x19,0x90(%rsp)
  11:	19 00 00 00 
  15:	48 c1 ea 03          	shr    $0x3,%rdx
  19:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1d:	0f 85 ea 01 00 00    	jne    0x20d
  23:	49 8b 86 58 04 00 00 	mov    0x458(%r14),%rax
  2a:*	48 8b 54 24 08       	mov    0x8(%rsp),%rdx		<-- trapping instruction
  2f:	4c 89 e6             	mov    %r12,%rsi
  32:	48 c7 c7 a0 6c bd b3 	mov    $0xffffffffb3bd6ca0,%rdi
  39:	80                   	.byte 0x80
  3a:	8c 24 97             	mov    %fs,(%rdi,%rdx,4)
  3d:	00 00                	add    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 8b 54 24 08       	mov    0x8(%rsp),%rdx
   5:	4c 89 e6             	mov    %r12,%rsi
   8:	48 c7 c7 a0 6c bd b3 	mov    $0xffffffffb3bd6ca0,%rdi
   f:	80                   	.byte 0x80
  10:	8c 24 97             	mov    %fs,(%rdi,%rdx,4)
  13:	00 00                	add    %al,(%rax)
	...
[   15.885928][    C0] RSP: 0018:ffffc900006d7d10 EFLAGS: 00000246
[   15.885931][    C0] RAX: 00000000000001c0 RBX: 1ffff920000dafa5 RCX: 0000000000000000
[   15.885933][    C0] RDX: 1ffff11001404b73 RSI: ffff88800934a240 RDI: ffff88800a025b98
[   15.885935][    C0] RBP: ffff888009e70800 R08: 0000000000000000 R09: 0000000000000000
[   15.885936][    C0] R10: ffffc900006d7d60 R11: ffff88800a025d60 R12: ffff8880022cde40
[   15.885938][    C0] R13: ffff888008cd1000 R14: ffff88800a025740 R15: ffff88800a025cb0
[ 15.885945][ C0] ? __pfx_fuse_flush (fs/fuse/file.c:517) 
[ 15.885948][ C0] ? ovl_verify_lowerdata (fs/overlayfs/namei.c:1024) 
[ 15.885953][ C0] ? __pfx_ovl_verify_lowerdata (fs/overlayfs/namei.c:1017) 
[ 15.885959][ C0] ? ovl_real_file (fs/overlayfs/file.c:195) 
[ 15.885962][ C0] ? __pfx_ovl_real_file (fs/overlayfs/file.c:175) 
[ 15.885964][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.885967][ C0] ? file_close_fd (fs/file.c:845) 
[ 15.885972][ C0] ovl_flush (fs/overlayfs/file.c:649) 
[ 15.885975][ C0] filp_flush (fs/open.c:1541) 
[ 15.885978][ C0] __x64_sys_close (fs/open.c:1581 fs/open.c:1566 fs/open.c:1566) 
[ 15.885982][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.885986][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.885988][    C0] RIP: 0033:0x7f2180dce227
[ 15.885993][ C0] Code: ff e8 9d e3 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 e3 c9 f5 ff
All code
========
   0:	ff                   	ljmp   (bad)
   1:	e8 9d e3 01 00       	call   0x1e3a3
   6:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 03 00 00 00       	mov    $0x3,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 41                	ja     0x73
  32:	c3                   	ret
  33:	48 83 ec 18          	sub    $0x18,%rsp
  37:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  3b:	e8 e3 c9 f5 ff       	call   0xfffffffffff5ca23

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 41                	ja     0x49
   8:	c3                   	ret
   9:	48 83 ec 18          	sub    $0x18,%rsp
   d:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  11:	e8 e3 c9 f5 ff       	call   0xfffffffffff5c9f9
[   15.885995][    C0] RSP: 002b:00007ffd4031bc28 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   15.885997][    C0] RAX: ffffffffffffffda RBX: 00000000000000ff RCX: 00007f2180dce227
[   15.885999][    C0] RDX: 00000000000000ff RSI: 000055868c3fb010 RDI: 00000000000000ff
[   15.886001][    C0] RBP: 00007ffd4031bd60 R08: 000055868c40c050 R09: 0000000000000000
[   15.886003][    C0] R10: 00007f2180f0d008 R11: 0000000000000246 R12: 0000000000000000
[   15.886004][    C0] R13: 00007ffd4031bc60 R14: 0000558653e1df27 R15: 000055868c40a620
| [   17.710344][    C2] INFO: lockdep is turned off.
| [   17.710674][    C2] Preemption disabled at:
| [ 17.710677][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   17.711258][    C2] Tainted: [W]=WARN
[   17.711260][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.711264][    C2] Call Trace:
[   17.711266][    C2]  <IRQ>
[ 17.711270][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.711282][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 17.711292][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.711299][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.711302][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.711310][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.711320][ 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) 
[ 17.711327][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.711332][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.711339][ 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) 
[ 17.711346][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.711351][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.711358][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.711363][ 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:2333) 
[ 17.711371][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.711377][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.711382][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.711387][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.711394][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.711400][ C2] ? acct_collect (kernel/acct.c:599) 
[ 17.711405][ C2] ? do_exit (kernel/exit.c:937) 
[ 17.711411][ C2] ? do_group_exit (kernel/exit.c:1083) 
[ 17.711415][ C2] ? __x64_sys_exit_group (kernel/exit.c:1111) 
[ 17.711419][ C2] ? x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.711426][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.711432][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 17.711436][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.711442][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.711449][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.711454][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 17.711460][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.711464][ C2] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.711473][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.711482][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.711487][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.711496][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.711502][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.711510][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.711514][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.711518][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.711524][    C2]  </IRQ>
[   17.711525][    C2]  <TASK>
[ 17.711528][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.711533][ C2] RIP: 0010:acct_collect (kernel/acct.c:599) 
[ 17.711538][ C2] Code: 63 02 0f 1f 44 00 00 31 db 4c 8d 74 24 50 49 bc 00 00 00 00 00 fc ff df eb 32 48 8d 78 08 48 89 fa 48 c1 ea 03 42 80 3c 22 00 <0f> 85 b8 05 00 00 48 89 c1 48 8b 50 08 48 c1 e9 03 42 80 3c 21 00
All code
========
   0:	63 02                	movsxd (%rdx),%eax
   2:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   7:	31 db                	xor    %ebx,%ebx
   9:	4c 8d 74 24 50       	lea    0x50(%rsp),%r14
   e:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  15:	fc ff df 
  18:	eb 32                	jmp    0x4c
  1a:	48 8d 78 08          	lea    0x8(%rax),%rdi
  1e:	48 89 fa             	mov    %rdi,%rdx
  21:	48 c1 ea 03          	shr    $0x3,%rdx
  25:	42 80 3c 22 00       	cmpb   $0x0,(%rdx,%r12,1)
  2a:*	0f 85 b8 05 00 00    	jne    0x5e8		<-- trapping instruction
  30:	48 89 c1             	mov    %rax,%rcx
  33:	48 8b 50 08          	mov    0x8(%rax),%rdx
  37:	48 c1 e9 03          	shr    $0x3,%rcx
  3b:	42 80 3c 21 00       	cmpb   $0x0,(%rcx,%r12,1)

Code starting with the faulting instruction
===========================================
   0:	0f 85 b8 05 00 00    	jne    0x5be
   6:	48 89 c1             	mov    %rax,%rcx
   9:	48 8b 50 08          	mov    0x8(%rax),%rdx
   d:	48 c1 e9 03          	shr    $0x3,%rcx
  11:	42 80 3c 21 00       	cmpb   $0x0,(%rcx,%r12,1)
[   17.711543][    C2] RSP: 0018:ffffc90000a57d90 EFLAGS: 00000246
[   17.711549][    C2] RAX: ffff888009fedc40 RBX: 000000000026a000 RCX: 1ffff9200014afc3
[   17.711552][    C2] RDX: 1ffff110013fdb89 RSI: 0000000000000005 RDI: ffff888009fedc48
[   17.711555][    C2] RBP: 1ffff9200014afb6 R08: ffff888002465c00 R09: 0000000000000001
[   17.711558][    C2] R10: ffff888002465c08 R11: 0000000000000005 R12: dffffc0000000000
[   17.711561][    C2] R13: 0000000000000000 R14: ffffc90000a57de0 R15: ffff888005866c40
[ 17.711571][ C2] ? __pfx_acct_collect (kernel/acct.c:587) 
[ 17.711575][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.711584][ C2] ? hrtimer_try_to_cancel (kernel/time/hrtimer.c:1359) 
[ 17.711592][ C2] do_exit (kernel/exit.c:937) 
[ 17.711598][ C2] do_group_exit (kernel/exit.c:1083) 
[ 17.711604][ C2] __x64_sys_exit_group (kernel/exit.c:1111) 
[ 17.711608][ C2] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.711613][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.711619][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.711623][    C2] RIP: 0033:0x7f0534606abd
[ 17.711630][ C2] Code: ff ff ff ff 64 89 02 44 89 c0 c3 66 90 f3 0f 1e fa 48 8b 35 35 03 0e 00 ba e7 00 00 00 eb 07 66 0f 1f 44 00 00 f4 89 d0 0f 05 <48> 3d 00 f0 ff ff 76 f3 f7 d8 64 89 06 eb ec 0f 1f 40 00 f3 0f 1e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff                   	(bad)
   3:	ff 64 89 02          	jmp    *0x2(%rcx,%rcx,4)
   7:	44 89 c0             	mov    %r8d,%eax
   a:	c3                   	ret
   b:	66 90                	xchg   %ax,%ax
   d:	f3 0f 1e fa          	endbr64
  11:	48 8b 35 35 03 0e 00 	mov    0xe0335(%rip),%rsi        # 0xe034d
  18:	ba e7 00 00 00       	mov    $0xe7,%edx
  1d:	eb 07                	jmp    0x26
  1f:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  25:	f4                   	hlt
  26:	89 d0                	mov    %edx,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	76 f3                	jbe    0x25
  32:	f7 d8                	neg    %eax
  34:	64 89 06             	mov    %eax,%fs:(%rsi)
  37:	eb ec                	jmp    0x25
  39:	0f 1f 40 00          	nopl   0x0(%rax)
  3d:	f3                   	repz
  3e:	0f                   	.byte 0xf
  3f:	1e                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	76 f3                	jbe    0xfffffffffffffffb
   8:	f7 d8                	neg    %eax
   a:	64 89 06             	mov    %eax,%fs:(%rsi)
   d:	eb ec                	jmp    0xfffffffffffffffb
   f:	0f 1f 40 00          	nopl   0x0(%rax)
  13:	f3                   	repz
  14:	0f                   	.byte 0xf
  15:	1e                   	(bad)
[   17.711634][    C2] RSP: 002b:00007ffdc2c2ebe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   17.711638][    C2] RAX: ffffffffffffffda RBX: 00007f05346e39c0 RCX: 00007f0534606abd
[   17.711641][    C2] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   17.711644][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   17.711646][    C2] R10: 00007ffdc2c2ea90 R11: 0000000000000246 R12: 00007f05346e39c0


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