======================================
| [ 14.154499][ C3] #0: ffff88800a000190 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: walk_component (fs/namei.c:1834 fs/namei.c:2138) 
| [ 14.154958][ C3] #1: ffffffffa0b749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.155378][    C3]
| [   14.155378][    C3] stack backtrace:
[   14.155685][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.155687][    C3] Call Trace:
[   14.155690][    C3]  <IRQ>
[ 14.155691][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.155699][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.155703][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.155707][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.155713][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.155719][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.155723][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.155726][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.155730][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.155734][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.155737][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.155741][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.155743][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.155747][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.155751][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.155753][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 14.155757][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.155760][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.155767][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.155770][ 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) 
[ 14.155776][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 14.155780][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.155784][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.155787][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.155792][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.155796][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:839 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 14.155799][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 14.155805][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 14.155810][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 14.155814][ C3] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 14.155816][ C3] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 14.155819][ C3] ? kmem_cache_alloc_lru_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4215) 
[ 14.155825][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.155834][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.155838][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 14.155842][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.155846][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 14.155852][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.155856][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 14.155859][ C3] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 14.155861][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.155866][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.155871][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 14.155876][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.155879][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.155881][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.155885][    C3]  </IRQ>
[   14.155886][    C3]  <TASK>
[ 14.155887][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.155890][ C3] RIP: 0010:unwind_next_frame (./include/linux/rcupdate.h:839 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 14.155894][ C3] Code: 45 48 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 af 16 00 00 49 8b 45 48 48 89 44 24 18 <e8> d8 65 25 00 31 d2 45 31 c9 45 31 c0 48 8d 05 00 00 00 00 50 b9
All code
========
   0:	45                   	rex.RB
   1:	48                   	rex.W
   2:	48 89 c2             	mov    %rax,%rdx
   5:	48 89 04 24          	mov    %rax,(%rsp)
   9:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  10:	fc ff df 
  13:	48 c1 ea 03          	shr    $0x3,%rdx
  17:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1b:	0f 85 af 16 00 00    	jne    0x16d0
  21:	49 8b 45 48          	mov    0x48(%r13),%rax
  25:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
  2a:*	e8 d8 65 25 00       	call   0x256607		<-- trapping instruction
  2f:	31 d2                	xor    %edx,%edx
  31:	45 31 c9             	xor    %r9d,%r9d
  34:	45 31 c0             	xor    %r8d,%r8d
  37:	48 8d 05 00 00 00 00 	lea    0x0(%rip),%rax        # 0x3e
  3e:	50                   	push   %rax
  3f:	b9                   	.byte 0xb9

Code starting with the faulting instruction
===========================================
   0:	e8 d8 65 25 00       	call   0x2565dd
   5:	31 d2                	xor    %edx,%edx
   7:	45 31 c9             	xor    %r9d,%r9d
   a:	45 31 c0             	xor    %r8d,%r8d
   d:	48 8d 05 00 00 00 00 	lea    0x0(%rip),%rax        # 0x14
  14:	50                   	push   %rax
  15:	b9                   	.byte 0xb9
[   14.155897][    C3] RSP: 0018:ffffc900004d71f8 EFLAGS: 00000246
[   14.155900][    C3] RAX: ffffc900004d7a30 RBX: 1ffff9200009ae48 RCX: ffffc900004d71a4
[   14.155902][    C3] RDX: 1ffff9200009ae68 RSI: ffffffff9db8fb2b RDI: ffffc900004d72f8
[   14.155904][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc900004d7339
[   14.155906][    C3] R10: 0000000000000028 R11: ffffc900004d7338 R12: ffffc900004d7350
[   14.155908][    C3] R13: ffffc900004d72f8 R14: ffff88800bd7a340 R15: 0000000000000cc0
[ 14.155912][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.155917][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 14.155920][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.155924][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.155928][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.155931][ C3] ? kernel_text_address (kernel/extable.c:99) 
[ 14.155934][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 14.155939][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 14.155945][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.155949][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 14.155953][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 14.155956][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 14.155960][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 14.155964][ C3] kasan_save_stack (mm/kasan/common.c:48) 
[ 14.155967][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 14.155969][ C3] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 14.155971][ C3] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 14.155973][ C3] ? kmem_cache_alloc_lru_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4215) 
[ 14.155977][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.155980][ C3] ? d_alloc (fs/dcache.c:1760) 
[ 14.155982][ C3] ? d_alloc_parallel (fs/dcache.c:2525) 
[ 14.155986][ C3] ? __lookup_slow (fs/namei.c:1802) 
[ 14.155989][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.155992][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 14.155997][ C3] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 14.156003][ C3] ? set_track_prepare (mm/slub.c:939) 
[ 14.156006][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4215) 
[ 14.156009][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.156012][ C3] ? d_alloc (fs/dcache.c:1760) 
[ 14.156015][ C3] ? d_alloc_parallel (fs/dcache.c:2525) 
[ 14.156017][ C3] ? __lookup_slow (fs/namei.c:1802) 
[ 14.156019][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.156022][ C3] ? link_path_walk.part.0.constprop.0 (fs/namei.c:2505) 
[ 14.156025][ C3] ? path_openat (fs/namei.c:4035) 
[ 14.156028][ C3] ? do_filp_open (fs/namei.c:4066) 
[ 14.156031][ C3] ? do_sys_openat2 (fs/open.c:1429) 
[ 14.156036][ C3] ? __x64_sys_openat (fs/open.c:1455) 
[ 14.156038][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 14.156044][ C3] ? set_track_update.isra.0 (mm/slub.c:957) 
[ 14.156047][ C3] ? ___slab_alloc (mm/slub.c:968 mm/slub.c:3848) 
[ 14.156052][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.156057][ C3] kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 14.156059][ C3] __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 14.156062][ C3] kmem_cache_alloc_lru_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4215) 
[ 14.156066][ C3] ? __pfx_format_decode (lib/vsprintf.c:2571) 
[ 14.156072][ C3] __d_alloc (fs/dcache.c:1681) 
[ 14.156076][ C3] d_alloc (fs/dcache.c:1760) 
[ 14.156081][ C3] d_alloc_parallel (fs/dcache.c:2525) 
[ 14.156084][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 14.156086][ C3] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 14.156090][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 14.156093][ C3] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 14.156095][ C3] ? __pfx_d_alloc_parallel (fs/dcache.c:2521) 
[ 14.156098][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 14.156101][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4974) 
[ 14.156105][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4974) 
[ 14.156109][ C3] __lookup_slow (fs/namei.c:1802) 
[ 14.156112][ C3] ? __pfx___lookup_slow (fs/namei.c:1793) 
[ 14.156120][ C3] ? lookup_fast (fs/namei.c:1753) 
[ 14.156124][ C3] walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.156128][ C3] link_path_walk.part.0.constprop.0 (fs/namei.c:2505) 
[ 14.156133][ C3] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2428) 
[ 14.156138][ C3] path_openat (fs/namei.c:4035) 
[ 14.156142][ C3] ? __pfx_path_openat (fs/namei.c:4021) 
[ 14.156145][ C3] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 14.156149][ C3] do_filp_open (fs/namei.c:4066) 
[ 14.156153][ C3] ? __pfx_do_filp_open (fs/namei.c:4060) 
[ 14.156159][ C3] ? __pfx_kfree_link (fs/libfs.c:1625) 
[ 14.156163][ C3] ? alloc_fd (fs/file.c:597) 
[ 14.156167][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.156170][ 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) 
[ 14.156174][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 14.156178][ C3] ? alloc_fd (fs/file.c:597) 
[ 14.156183][ C3] do_sys_openat2 (fs/open.c:1429) 
[ 14.156187][ C3] ? __pfx_do_sys_openat2 (fs/open.c:1414) 
[ 14.156191][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.156196][ C3] __x64_sys_openat (fs/open.c:1455) 
[ 14.156199][ C3] ? 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) 
[ 14.156202][ C3] ? __pfx___x64_sys_openat (fs/open.c:1455) 
[ 14.156206][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.156209][ C3] ? 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) 
[ 14.156213][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 14.156217][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   14.156219][    C3] RIP: 0033:0x7f161f74e82b
[ 14.156224][ C3] 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
[   14.156227][    C3] RSP: 002b:00007ffc7b3d5130 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[   14.156229][    C3] RAX: ffffffffffffffda RBX: 0000000000000090 RCX: 00007f161f74e82b
[   14.156231][    C3] RDX: 0000000000080101 RSI: 00007f161fb2d6b9 RDI: 00000000ffffff9c
[   14.156233][    C3] RBP: 00007f161fb2d6b9 R08: 0000000000000000 R09: 00007ffc7b3d5090
[   14.156235][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080101
[   14.156237][    C3] R13: 00007ffc7b3d520c R14: 0000000000000000 R15: 000055f30fb67e50
| [   14.196493][    C3] RCU nest depth: 0, expected: 0
| [   14.196702][    C3] INFO: lockdep is turned off.
| [   14.196917][    C3] Preemption disabled at:
| [ 14.196918][ C3] handle_softirqs (kernel/softirq.c:553) 
[   14.197365][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.197370][    C3] Call Trace:
[   14.197372][    C3]  <IRQ>
[ 14.197374][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.197384][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 14.197392][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.197398][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.197400][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.197406][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.197412][ 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) 
[ 14.197418][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.197421][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.197427][ 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) 
[ 14.197432][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.197435][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.197442][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.197446][ 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) 
[ 14.197452][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 14.197457][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.197461][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.197464][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.197469][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.197473][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:839 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 14.197478][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 14.197484][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 14.197489][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 14.197494][ C3] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 14.197496][ C3] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 14.197499][ C3] ? kmem_cache_alloc_lru_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4215) 
[ 14.197505][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.197513][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.197517][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 14.197521][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.197525][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 14.197531][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.197535][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 14.197538][ C3] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 14.197541][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.197546][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.197550][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 14.197555][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.197558][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.197561][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.197564][    C3]  </IRQ>
[   14.197565][    C3]  <TASK>
[ 14.197567][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.197570][ C3] RIP: 0010:unwind_next_frame (./include/linux/rcupdate.h:839 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 14.197573][ C3] Code: 45 48 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 af 16 00 00 49 8b 45 48 48 89 44 24 18 <e8> d8 65 25 00 31 d2 45 31 c9 45 31 c0 48 8d 05 00 00 00 00 50 b9
All code
========
   0:	45                   	rex.RB
   1:	48                   	rex.W
   2:	48 89 c2             	mov    %rax,%rdx
   5:	48 89 04 24          	mov    %rax,(%rsp)
   9:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  10:	fc ff df 
  13:	48 c1 ea 03          	shr    $0x3,%rdx
  17:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1b:	0f 85 af 16 00 00    	jne    0x16d0
  21:	49 8b 45 48          	mov    0x48(%r13),%rax
  25:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
  2a:*	e8 d8 65 25 00       	call   0x256607		<-- trapping instruction
  2f:	31 d2                	xor    %edx,%edx
  31:	45 31 c9             	xor    %r9d,%r9d
  34:	45 31 c0             	xor    %r8d,%r8d
  37:	48 8d 05 00 00 00 00 	lea    0x0(%rip),%rax        # 0x3e
  3e:	50                   	push   %rax
  3f:	b9                   	.byte 0xb9

Code starting with the faulting instruction
===========================================
   0:	e8 d8 65 25 00       	call   0x2565dd
   5:	31 d2                	xor    %edx,%edx
   7:	45 31 c9             	xor    %r9d,%r9d
   a:	45 31 c0             	xor    %r8d,%r8d
   d:	48 8d 05 00 00 00 00 	lea    0x0(%rip),%rax        # 0x14
  14:	50                   	push   %rax
  15:	b9                   	.byte 0xb9
[   14.197576][    C3] RSP: 0018:ffffc900004d71f8 EFLAGS: 00000246
[   14.197581][    C3] RAX: ffffc900004d7a30 RBX: 1ffff9200009ae48 RCX: ffffc900004d71a4
[   14.197583][    C3] RDX: 1ffff9200009ae68 RSI: ffffffff9db8fb2b RDI: ffffc900004d72f8
[   14.197585][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc900004d7339
[   14.197587][    C3] R10: 0000000000000028 R11: ffffc900004d7338 R12: ffffc900004d7350
[   14.197589][    C3] R13: ffffc900004d72f8 R14: ffff88800bd7a340 R15: 0000000000000cc0
[ 14.197593][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197599][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 14.197602][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197606][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.197610][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197613][ C3] ? kernel_text_address (kernel/extable.c:99) 
[ 14.197617][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 14.197621][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 14.197627][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197631][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 14.197634][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 14.197638][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 14.197642][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 14.197646][ C3] kasan_save_stack (mm/kasan/common.c:48) 
[ 14.197649][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 14.197651][ C3] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 14.197653][ C3] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 14.197655][ C3] ? kmem_cache_alloc_lru_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4215) 
[ 14.197658][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.197661][ C3] ? d_alloc (fs/dcache.c:1760) 
[ 14.197664][ C3] ? d_alloc_parallel (fs/dcache.c:2525) 
[ 14.197667][ C3] ? __lookup_slow (fs/namei.c:1802) 
[ 14.197669][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197673][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 14.197677][ C3] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 14.197683][ C3] ? set_track_prepare (mm/slub.c:939) 
[ 14.197686][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4215) 
[ 14.197689][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.197692][ C3] ? d_alloc (fs/dcache.c:1760) 
[ 14.197695][ C3] ? d_alloc_parallel (fs/dcache.c:2525) 
[ 14.197697][ C3] ? __lookup_slow (fs/namei.c:1802) 
[ 14.197699][ C3] ? walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197702][ C3] ? link_path_walk.part.0.constprop.0 (fs/namei.c:2505) 
[ 14.197705][ C3] ? path_openat (fs/namei.c:4035) 
[ 14.197707][ C3] ? do_filp_open (fs/namei.c:4066) 
[ 14.197710][ C3] ? do_sys_openat2 (fs/open.c:1429) 
[ 14.197715][ C3] ? __x64_sys_openat (fs/open.c:1455) 
[ 14.197717][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 14.197722][ C3] ? set_track_update.isra.0 (mm/slub.c:957) 
[ 14.197725][ C3] ? ___slab_alloc (mm/slub.c:968 mm/slub.c:3848) 
[ 14.197729][ C3] ? __d_alloc (fs/dcache.c:1681) 
[ 14.197734][ C3] kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 14.197736][ C3] __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 14.197739][ C3] kmem_cache_alloc_lru_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4215) 
[ 14.197743][ C3] ? __pfx_format_decode (lib/vsprintf.c:2571) 
[ 14.197748][ C3] __d_alloc (fs/dcache.c:1681) 
[ 14.197753][ C3] d_alloc (fs/dcache.c:1760) 
[ 14.197757][ C3] d_alloc_parallel (fs/dcache.c:2525) 
[ 14.197760][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 14.197762][ C3] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 14.197766][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 14.197769][ C3] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 14.197771][ C3] ? __pfx_d_alloc_parallel (fs/dcache.c:2521) 
[ 14.197774][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 14.197777][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4974) 
[ 14.197780][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4974) 
[ 14.197785][ C3] __lookup_slow (fs/namei.c:1802) 
[ 14.197788][ C3] ? __pfx___lookup_slow (fs/namei.c:1793) 
[ 14.197795][ C3] ? lookup_fast (fs/namei.c:1753) 
[ 14.197799][ C3] walk_component (./include/linux/fs.h:882 fs/namei.c:1835 fs/namei.c:2138) 
[ 14.197803][ C3] link_path_walk.part.0.constprop.0 (fs/namei.c:2505) 
[ 14.197808][ C3] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2428) 
[ 14.197813][ C3] path_openat (fs/namei.c:4035) 
[ 14.197817][ C3] ? __pfx_path_openat (fs/namei.c:4021) 
[ 14.197820][ C3] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 14.197824][ C3] do_filp_open (fs/namei.c:4066) 
[ 14.197828][ C3] ? __pfx_do_filp_open (fs/namei.c:4060) 
[ 14.197834][ C3] ? __pfx_kfree_link (fs/libfs.c:1625) 
[ 14.197838][ C3] ? alloc_fd (fs/file.c:597) 
[ 14.197842][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.197846][ 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) 
[ 14.197849][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 14.197854][ C3] ? alloc_fd (fs/file.c:597) 
[ 14.197859][ C3] do_sys_openat2 (fs/open.c:1429) 
[ 14.197863][ C3] ? __pfx_do_sys_openat2 (fs/open.c:1414) 
[ 14.197867][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.197874][ C3] __x64_sys_openat (fs/open.c:1455) 
[ 14.197877][ C3] ? 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) 
[ 14.197880][ C3] ? __pfx___x64_sys_openat (fs/open.c:1455) 
[ 14.197884][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.197886][ C3] ? 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) 
[ 14.197890][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 14.197894][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   14.197897][    C3] RIP: 0033:0x7f161f74e82b
[ 14.197907][ C3] Code: Unable to access opcode bytes at 0x7f161f74e801.

Code starting with the faulting instruction
===========================================
[   14.197908][    C3] RSP: 002b:00007ffc7b3d5130 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[   14.197912][    C3] RAX: ffffffffffffffda RBX: 0000000000000090 RCX: 00007f161f74e82b
[   14.197913][    C3] RDX: 0000000000080101 RSI: 00007f161fb2d6b9 RDI: 00000000ffffff9c
[   14.197915][    C3] RBP: 00007f161fb2d6b9 R08: 0000000000000000 R09: 00007ffc7b3d5090
[   14.197917][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080101


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