======================================
| [ 17.493013][ C0] #3: ffffffffb6f81e90 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce (./include/linux/srcu.h:161 ./include/linux/srcu.h:253 mm/kasan/quarantine.c:259) 
| [ 17.493840][ C0] #4: ffffffffb6d793c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   17.494562][    C0]
| [   17.494562][    C0] stack backtrace:
[   17.495058][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.495061][    C0] Call Trace:
[   17.495065][    C0]  <IRQ>
[ 17.495068][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.495080][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 17.495089][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 17.495098][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 17.495103][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 17.495108][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 17.495112][ C0] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 17.495119][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 17.495126][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 17.495131][ C0] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 17.495137][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.495145][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 17.495149][ C0] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 17.495153][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.495160][ C0] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 17.495164][ C0] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 17.495168][ C0] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 17.495172][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.495182][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.495188][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:54 lib/ref_tracker.c:223) 
[ 17.495197][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 17.495202][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.495209][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 17.495215][ C0] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 17.495221][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.495225][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 17.495230][ 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:2368) 
[ 17.495239][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 17.495245][ C0] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 17.495249][ C0] ? handle_softirqs (kernel/softirq.c:580) 
[ 17.495257][ C0] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 17.495265][ C0] ? __kernel_text_address (kernel/extable.c:79) 
[ 17.495273][ C0] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 17.495281][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.495290][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 17.495296][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.495300][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 17.495307][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.495313][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.495319][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 17.495324][ C0] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 17.495330][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.495339][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.495344][ C0] handle_softirqs (kernel/softirq.c:580) 
[ 17.495352][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.495357][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.495362][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.495368][    C0]  </IRQ>
[   17.495370][    C0]  <TASK>
[ 17.495372][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.495379][ C0] RIP: 0010:debug_lockdep_rcu_enabled (kernel/rcu/update.c:320 (discriminator 4)) 
[ 17.495386][ C0] Code: 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 8b 05 a6 c7 a2 01 85 c0 74 20 <8b> 05 30 d7 a2 01 85 c0 74 16 65 48 8b 05 f8 b4 97 02 8b 80 4c 0a
All code
========
   0:	1f                   	(bad)
   1:	84 00                	test   %al,(%rax)
   3:	00 00                	add    %al,(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   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:	90                   	nop
  1c:	f3 0f 1e fa          	endbr64
  20:	8b 05 a6 c7 a2 01    	mov    0x1a2c7a6(%rip),%eax        # 0x1a2c7cc
  26:	85 c0                	test   %eax,%eax
  28:	74 20                	je     0x4a
  2a:*	8b 05 30 d7 a2 01    	mov    0x1a2d730(%rip),%eax        # 0x1a2d760		<-- trapping instruction
  30:	85 c0                	test   %eax,%eax
  32:	74 16                	je     0x4a
  34:	65 48 8b 05 f8 b4 97 	mov    %gs:0x297b4f8(%rip),%rax        # 0x297b534
  3b:	02 
  3c:	8b                   	.byte 0x8b
  3d:	80                   	.byte 0x80
  3e:	4c                   	rex.WR
  3f:	0a                   	.byte 0xa

Code starting with the faulting instruction
===========================================
   0:	8b 05 30 d7 a2 01    	mov    0x1a2d730(%rip),%eax        # 0x1a2d736
   6:	85 c0                	test   %eax,%eax
   8:	74 16                	je     0x20
   a:	65 48 8b 05 f8 b4 97 	mov    %gs:0x297b4f8(%rip),%rax        # 0x297b50a
  11:	02 
  12:	8b                   	.byte 0x8b
  13:	80                   	.byte 0x80
  14:	4c                   	rex.WR
  15:	0a                   	.byte 0xa
[   17.495391][    C0] RSP: 0018:ffffc90000ab7438 EFLAGS: 00000202
[   17.495397][    C0] RAX: 0000000000000002 RBX: dffffc0000000000 RCX: ffffc90000ab7404
[   17.495401][    C0] RDX: 0000000000000000 RSI: ffffffffb688de21 RDI: 00007f1ef534ea47
[   17.495404][    C0] RBP: 00007f1ef534ea47 R08: 0000000000000000 R09: 0000000000000001
[   17.495408][    C0] R10: 0000000000000000 R11: ffffffffb6d794e0 R12: ffffffffb77f69e0
[   17.495411][    C0] R13: 0000000000000000 R14: ffff88800a9245c0 R15: ffff8880010407c0
[ 17.495423][ C0] ftrace_ops_trampoline (kernel/trace/ftrace.c:1098 (discriminator 10)) 
[ 17.495432][ C0] is_ftrace_trampoline (kernel/trace/ftrace.c:1118) 
[ 17.495437][ C0] kernel_text_address (kernel/extable.c:121 kernel/extable.c:94) 
[ 17.495443][ C0] __kernel_text_address (kernel/extable.c:79) 
[ 17.495449][ C0] unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 17.495455][ C0] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 17.495462][ C0] arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 17.495473][ C0] stack_trace_save (kernel/stacktrace.c:123) 
[ 17.495478][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 17.495482][ C0] ? check_bytes_and_report (mm/slub.c:1212) 
[ 17.495495][ C0] ? check_object (mm/slub.c:1289 mm/slub.c:1388) 
[ 17.495500][ C0] set_track_prepare (mm/slub.c:936) 
[ 17.495505][ C0] ? kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 17.495511][ C0] ? __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 17.495517][ C0] ? kmem_cache_alloc_bulk_noprof (mm/slub.c:4148 mm/slub.c:5374 mm/slub.c:5354) 
[ 17.495523][ C0] ? mas_dup_alloc.isra.0 (lib/maple_tree.c:6674) 
[ 17.495530][ C0] ? mas_dup_build (./include/linux/maple_tree.h:566 lib/maple_tree.c:6738) 
[ 17.495535][ C0] ? __mt_dup (lib/maple_tree.c:6802) 
[ 17.495540][ C0] ? dup_mmap (mm/mmap.c:1749) 
[ 17.495545][ C0] ? copy_mm (kernel/fork.c:1478 kernel/fork.c:1529) 
[ 17.495552][ C0] ? copy_process (kernel/fork.c:2169) 
[ 17.495558][ C0] ? kernel_clone (./include/linux/random.h:26 kernel/fork.c:2600) 
[ 17.495562][ C0] ? __do_sys_clone (kernel/fork.c:2731) 
[ 17.495566][ C0] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.495570][ C0] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 17.495577][ C0] free_to_partial_list (mm/slub.c:4388) 
[ 17.495582][ C0] ? qlist_free_all (mm/kasan/quarantine.c:163 mm/kasan/quarantine.c:179) 
[ 17.495590][ C0] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 17.495597][ C0] kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 17.495602][ C0] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 17.495608][ C0] kmem_cache_alloc_bulk_noprof (mm/slub.c:4148 mm/slub.c:5374 mm/slub.c:5354) 
[ 17.495616][ C0] mas_dup_alloc.isra.0 (lib/maple_tree.c:6674) 
[ 17.495624][ C0] mas_dup_build (./include/linux/maple_tree.h:566 lib/maple_tree.c:6738) 
[ 17.495632][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.495641][ C0] __mt_dup (lib/maple_tree.c:6802) 
[ 17.495647][ C0] ? __pfx___mt_dup (lib/maple_tree.c:6796) 
[ 17.495656][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.495667][ C0] ? dup_mm_exe_file (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2526 ./include/linux/atomic/atomic-instrumented.h:1575 ./include/linux/fs.h:3179 ./include/linux/fs.h:3203 kernel/fork.c:526) 
[ 17.495673][ C0] dup_mmap (mm/mmap.c:1749) 
[ 17.495679][ C0] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 17.495693][ C0] ? __pfx_dup_mmap (mm/mmap.c:1724) 
[ 17.495704][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.495713][ C0] copy_mm (kernel/fork.c:1478 kernel/fork.c:1529) 
[ 17.495721][ C0] copy_process (kernel/fork.c:2169) 
[ 17.495727][ C0] ? do_fault_around (mm/memory.c:5574) 
[ 17.495735][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.495745][ C0] ? __pfx_copy_process (kernel/fork.c:1918) 
[ 17.495752][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.495760][ C0] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 17.495770][ C0] kernel_clone (./include/linux/random.h:26 kernel/fork.c:2600) 
[ 17.495776][ C0] ? __pfx_kernel_clone (kernel/fork.c:2559) 
[ 17.495783][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.495788][ C0] ? ovl_llseek (fs/overlayfs/file.c:284) 
[ 17.495795][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.495803][ C0] ? ovl_llseek (fs/overlayfs/file.c:284) 
[ 17.495810][ C0] __do_sys_clone (kernel/fork.c:2731) 
[ 17.495814][ C0] ? __pfx___do_sys_clone (kernel/fork.c:2731) 
[ 17.495825][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.495829][ C0] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:199 arch/x86/entry/syscall_64.c:90) 
[ 17.495834][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.495839][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.495845][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.495850][    C0] RIP: 0033:0x7f1ef534ea47
[ 17.495857][ C0] Code: 00 00 00 f3 0f 1e fa 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 39 41 89 c0 85 c0 75 2a 64 48 8b 04 25 10 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 39                	ja     0x6b
  32:	41 89 c0             	mov    %eax,%r8d
  35:	85 c0                	test   %eax,%eax
  37:	75 2a                	jne    0x63
  39:	64                   	fs
  3a:	48                   	rex.W
  3b:	8b                   	.byte 0x8b
  3c:	04 25                	add    $0x25,%al
  3e:	10 00                	adc    %al,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 39                	ja     0x41
   8:	41 89 c0             	mov    %eax,%r8d
   b:	85 c0                	test   %eax,%eax
   d:	75 2a                	jne    0x39
   f:	64                   	fs
  10:	48                   	rex.W
  11:	8b                   	.byte 0x8b
  12:	04 25                	add    $0x25,%al
  14:	10 00                	adc    %al,(%rax)
[   17.495861][    C0] RSP: 002b:00007ffd2dc573e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[   17.495867][    C0] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f1ef534ea47
[   17.495870][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[   17.495874][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0065726168736e75
[   17.495877][    C0] R10: 00007f1ef5233a10 R11: 0000000000000246 R12: 0000000000000000


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock