======================================
| [ 18.481902][ C2] #0: ffffffffa8779fb0 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce (./include/linux/srcu.h:161 ./include/linux/srcu.h:253 mm/kasan/quarantine.c:259) 
| [ 18.482335][ C2] #1: ffffffffa85749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   18.482695][    C2]
| [   18.482695][    C2] stack backtrace:
[   18.482950][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.482953][    C2] Call Trace:
[   18.482954][    C2]  <IRQ>
[ 18.482956][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.482962][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 18.482968][ C2] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 18.482973][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 18.482979][ C2] ? save_trace (kernel/locking/lockdep.c:594) 
[ 18.482983][ C2] mark_lock (kernel/locking/lockdep.c:4754) 
[ 18.482988][ C2] mark_usage (kernel/locking/lockdep.c:4643) 
[ 18.482992][ C2] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 18.482997][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 18.483000][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 18.483003][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.483009][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 18.483011][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 18.483014][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 18.483018][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 18.483020][ C2] simple_pin_fs (fs/libfs.c:1066) 
[ 18.483023][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 18.483027][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 18.483032][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.483035][ 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:2366) 
[ 18.483040][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.483044][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.483047][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.483049][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 18.483054][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.483057][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.483061][ C2] ? qlist_free_all (mm/kasan/quarantine.c:174) 
[ 18.483064][ C2] ? kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 18.483067][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 18.483072][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 18.483076][ C2] ? getname_flags (fs/namei.c:146) 
[ 18.483080][ C2] ? do_sys_openat2 (./include/linux/fs.h:2852 fs/open.c:1423) 
[ 18.483085][ C2] ? __x64_sys_openat (fs/open.c:1455) 
[ 18.483090][ C2] __put_net (net/core/net_namespace.c:732) 
[ 18.483094][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 18.483098][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.483101][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.483105][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 18.483109][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 18.483113][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 18.483116][ C2] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 18.483120][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 18.483125][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 18.483129][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 18.483134][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.483136][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.483139][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   18.483142][    C2]  </IRQ>
[   18.483143][    C2]  <TASK>
[ 18.483145][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.483148][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.483152][ C2] Code: 74 24 10 e8 21 f4 85 fd 48 89 ef e8 99 46 86 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 4e 7a fd 65 8b 05 63 e8 98 02 85 c0 74 0e 5b 5d e9 c8 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	21 f4                	and    %esi,%esp
   6:	85 fd                	test   %edi,%ebp
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 99 46 86 fd       	call   0xfffffffffd8646a9
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 4e 7a fd       	call   0xfffffffffd7a4ee9		<-- trapping instruction
  2f:	65 8b 05 63 e8 98 02 	mov    %gs:0x298e863(%rip),%eax        # 0x298e899
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	c8                   	.byte 0xc8
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 4e 7a fd       	call   0xfffffffffd7a4ebf
   5:	65 8b 05 63 e8 98 02 	mov    %gs:0x298e863(%rip),%eax        # 0x298e86f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	c8                   	.byte 0xc8
  14:	34 00                	xor    $0x0,%al
[   18.483155][    C2] RSP: 0018:ffffc90000af7c78 EFLAGS: 00000206
[   18.483158][    C2] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000080
[   18.483160][    C2] RDX: 0000000000000000 RSI: ffffffffa8087785 RDI: 0000000000000001
[   18.483162][    C2] RBP: ffff888001040f40 R08: 0000000000000001 R09: 0000000000000001
[   18.483164][    C2] R10: ffffffffa8fda697 R11: 00000000000003a0 R12: ffff8880020c1fe4
[   18.483166][    C2] R13: 0000000000000000 R14: ffffc90000af7cc8 R15: ffff8880053e9064
[ 18.483177][ C2] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 18.483184][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 18.483191][ C2] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 18.483198][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 18.483203][ C2] getname_flags (fs/namei.c:146) 
[ 18.483207][ C2] do_sys_openat2 (./include/linux/fs.h:2852 fs/open.c:1423) 
[ 18.483211][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1414) 
[ 18.483215][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 18.483220][ C2] __x64_sys_openat (fs/open.c:1455) 
[ 18.483223][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 18.483227][ C2] ? __pfx___x64_sys_openat (fs/open.c:1455) 
[ 18.483232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.483235][ C2] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:198 arch/x86/entry/syscall_64.c:90) 
[ 18.483239][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.483241][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.483244][    C2] RIP: 0033:0x7f8f14b1982b
[ 18.483249][ C2] Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25
All code
========
   0:	25 00 00 41 00       	and    $0x410000,%eax
   5:	3d 00 00 41 00       	cmp    $0x410000,%eax
   a:	74 4b                	je     0x57
   c:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  13:	00 
  14:	85 c0                	test   %eax,%eax
  16:	75 67                	jne    0x7f
  18:	44 89 e2             	mov    %r12d,%edx
  1b:	48 89 ee             	mov    %rbp,%rsi
  1e:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  23:	b8 01 01 00 00       	mov    $0x101,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	0f 87 91 00 00 00    	ja     0xc7
  36:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  3b:	64                   	fs
  3c:	48                   	rex.W
  3d:	2b                   	.byte 0x2b
  3e:	14 25                	adc    $0x25,%al

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	0f 87 91 00 00 00    	ja     0x9d
   c:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  11:	64                   	fs
  12:	48                   	rex.W
  13:	2b                   	.byte 0x2b
  14:	14 25                	adc    $0x25,%al
[   18.483252][    C2] RSP: 002b:00007ffc16fb5700 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[   18.483254][    C2] RAX: ffffffffffffffda RBX: 0000561eaa4b62c0 RCX: 00007f8f14b1982b
[   18.483256][    C2] RDX: 0000000000000241 RSI: 0000561eaa49f160 RDI: 00000000ffffff9c
[   18.483258][    C2] RBP: 0000561eaa49f160 R08: 0000000000000000 R09: 0000000000000020
[   18.483260][    C2] R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000241
[   18.483262][    C2] R13: 0000000000000001 R14: 0000561eaa49f160 R15: 00007f8f149d86c0
| [   18.503977][    C2] RCU nest depth: 0, expected: 0
| [   18.504180][    C2] INFO: lockdep is turned off.
| [   18.504379][    C2] Preemption disabled at:
| [ 18.504381][ C2] 0x0 
[   18.504740][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.504742][    C2] Call Trace:
[   18.504744][    C2]  <IRQ>
[ 18.504745][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.504753][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 18.504760][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.504765][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.504768][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 18.504773][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.504779][ 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) 
[ 18.504783][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 18.504786][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.504791][ 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) 
[ 18.504795][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.504798][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 18.504803][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.504806][ 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:2366) 
[ 18.504812][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.504816][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.504819][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.504823][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 18.504827][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.504831][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.504835][ C2] ? qlist_free_all (mm/kasan/quarantine.c:174) 
[ 18.504840][ C2] ? kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 18.504844][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 18.504848][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 18.504853][ C2] ? getname_flags (fs/namei.c:146) 
[ 18.504856][ C2] ? do_sys_openat2 (./include/linux/fs.h:2852 fs/open.c:1423) 
[ 18.504860][ C2] ? __x64_sys_openat (fs/open.c:1455) 
[ 18.504866][ C2] __put_net (net/core/net_namespace.c:732) 
[ 18.504870][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 18.504874][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 18.504877][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 18.504881][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 18.504886][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 18.504890][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 18.504894][ C2] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 18.504898][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 18.504903][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 18.504906][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 18.504911][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.504914][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.504916][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   18.504920][    C2]  </IRQ>
[   18.504921][    C2]  <TASK>
[ 18.504922][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.504925][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.504930][ C2] Code: 74 24 10 e8 21 f4 85 fd 48 89 ef e8 99 46 86 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 4e 7a fd 65 8b 05 63 e8 98 02 85 c0 74 0e 5b 5d e9 c8 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	21 f4                	and    %esi,%esp
   6:	85 fd                	test   %edi,%ebp
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 99 46 86 fd       	call   0xfffffffffd8646a9
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 4e 7a fd       	call   0xfffffffffd7a4ee9		<-- trapping instruction
  2f:	65 8b 05 63 e8 98 02 	mov    %gs:0x298e863(%rip),%eax        # 0x298e899
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	c8                   	.byte 0xc8
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 4e 7a fd       	call   0xfffffffffd7a4ebf
   5:	65 8b 05 63 e8 98 02 	mov    %gs:0x298e863(%rip),%eax        # 0x298e86f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	c8                   	.byte 0xc8
  14:	34 00                	xor    $0x0,%al
[   18.504932][    C2] RSP: 0018:ffffc90000af7c78 EFLAGS: 00000206
[   18.504935][    C2] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000080
[   18.504937][    C2] RDX: 0000000000000000 RSI: ffffffffa8087785 RDI: 0000000000000001
[   18.504939][    C2] RBP: ffff888001040f40 R08: 0000000000000001 R09: 0000000000000001
[   18.504941][    C2] R10: ffffffffa8fda697 R11: 00000000000003a0 R12: ffff8880020c1fe4
[   18.504942][    C2] R13: 0000000000000000 R14: ffffc90000af7cc8 R15: ffff8880053e9064
[ 18.504949][ C2] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 18.504953][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 18.504958][ C2] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 18.504962][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 18.504967][ C2] getname_flags (fs/namei.c:146) 
[ 18.504971][ C2] do_sys_openat2 (./include/linux/fs.h:2852 fs/open.c:1423) 
[ 18.504975][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1414) 
[ 18.504979][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 18.504984][ C2] __x64_sys_openat (fs/open.c:1455) 
[ 18.504987][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 18.504991][ C2] ? __pfx___x64_sys_openat (fs/open.c:1455) 
[ 18.504995][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 18.504999][ C2] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:198 arch/x86/entry/syscall_64.c:90) 
[ 18.505002][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.505005][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.505008][    C2] RIP: 0033:0x7f8f14b1982b
[ 18.505012][ C2] Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25
All code
========
   0:	25 00 00 41 00       	and    $0x410000,%eax
   5:	3d 00 00 41 00       	cmp    $0x410000,%eax
   a:	74 4b                	je     0x57
   c:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  13:	00 
  14:	85 c0                	test   %eax,%eax
  16:	75 67                	jne    0x7f
  18:	44 89 e2             	mov    %r12d,%edx
  1b:	48 89 ee             	mov    %rbp,%rsi
  1e:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  23:	b8 01 01 00 00       	mov    $0x101,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	0f 87 91 00 00 00    	ja     0xc7
  36:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  3b:	64                   	fs
  3c:	48                   	rex.W
  3d:	2b                   	.byte 0x2b
  3e:	14 25                	adc    $0x25,%al

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	0f 87 91 00 00 00    	ja     0x9d
   c:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  11:	64                   	fs
  12:	48                   	rex.W
  13:	2b                   	.byte 0x2b
  14:	14 25                	adc    $0x25,%al
[   18.505014][    C2] RSP: 002b:00007ffc16fb5700 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[   18.505017][    C2] RAX: ffffffffffffffda RBX: 0000561eaa4b62c0 RCX: 00007f8f14b1982b
[   18.505019][    C2] RDX: 0000000000000241 RSI: 0000561eaa49f160 RDI: 00000000ffffff9c
[   18.505021][    C2] RBP: 0000561eaa49f160 R08: 0000000000000000 R09: 0000000000000020
[   18.505023][    C2] R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000241
[   18.505024][    C2] R13: 0000000000000001 R14: 0000561eaa49f160 R15: 00007f8f149d86c0
| [   21.722823][    C3] INFO: lockdep is turned off.
| [   21.722997][    C3] Preemption disabled at:
| [ 21.722998][ C3] 0x0 
| [   21.723321][    C3] Tainted: [W]=WARN
[   21.723323][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.723325][    C3] Call Trace:
[   21.723327][    C3]  <IRQ>
[ 21.723329][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 21.723337][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 21.723344][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 21.723349][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 21.723352][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 21.723357][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 21.723363][ 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) 
[ 21.723368][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 21.723371][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 21.723376][ 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) 
[ 21.723380][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 21.723383][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 21.723388][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 21.723391][ 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:2366) 
[ 21.723397][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 21.723401][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 21.723404][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 21.723408][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 21.723413][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.723417][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 21.723420][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 21.723422][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 21.723425][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.723429][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 21.723432][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 21.723435][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 21.723440][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 21.723446][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 21.723451][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 21.723459][ C3] __put_net (net/core/net_namespace.c:732) 
[ 21.723464][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 21.723471][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 21.723474][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 21.723480][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 21.723484][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 21.723489][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.723494][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 21.723498][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 21.723503][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 21.723506][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 21.723508][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   21.723512][    C3]  </IRQ>
[   21.723513][    C3]  <TASK>
[ 21.723515][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.723518][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 21.723522][ C3] Code: 60 b8 00 e9 c3 57 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 75 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   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:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   21.723525][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   21.723528][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffffa755ba19
[   21.723530][    C3] RDX: ffffed1006c3667b RSI: ffffffffa78511e0 RDI: ffffffffa4d8633f
[   21.723532][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c3667a
[   21.723534][    C3] R10: ffff8880361b33d3 R11: ffff8880052f8558 R12: 0000000000000000
[   21.723536][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 21.723540][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 21.723543][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.723547][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 21.723549][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 21.723552][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.723556][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 21.723560][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 21.723565][ C3] do_idle (kernel/sched/idle.c:325) 
[ 21.723569][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 21.723573][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 21.723576][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__might_resched:down_write:simple_recursive_removal:debugfs_remove:ref_tracker_dir_exit