======================================
| [ 13.445000][ C2] #0: ffffffffa2d81e90 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce (./include/linux/srcu.h:161 ./include/linux/srcu.h:253 mm/kasan/quarantine.c:259) 
| [ 13.445408][ C2] #1: ffffffffa2b793c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   13.445787][    C2]
| [   13.445787][    C2] stack backtrace:
[   13.446052][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.446057][    C2] Call Trace:
[   13.446062][    C2]  <IRQ>
[ 13.446064][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 13.446074][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 13.446079][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 13.446085][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 13.446088][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 13.446091][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 13.446094][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 13.446105][ C2] ? do_sys_openat2 (./include/linux/fs.h:2903 fs/open.c:1431) 
[ 13.446113][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 13.446116][ C2] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.446119][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.446122][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 13.446125][ C2] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.446128][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 13.446131][ C2] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.446138][ C2] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 13.446141][ C2] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 13.446143][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 13.446148][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 13.446155][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:54 lib/ref_tracker.c:223) 
[ 13.446160][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 13.446162][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 13.446166][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 13.446170][ C2] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 13.446174][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 13.446177][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 13.446180][ 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:2368) 
[ 13.446196][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 13.446199][ C2] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 13.446203][ C2] ? handle_softirqs (kernel/softirq.c:580) 
[ 13.446207][ C2] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 13.446214][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4148 mm/slub.c:4197 mm/slub.c:4204) 
[ 13.446223][ C2] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 13.446227][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 13.446235][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 13.446238][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 13.446242][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 13.446246][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 13.446250][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 13.446254][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 13.446256][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 13.446260][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 13.446267][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 13.446271][ C2] handle_softirqs (kernel/softirq.c:580) 
[ 13.446275][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 13.446278][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 13.446280][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   13.446284][    C2]  </IRQ>
[   13.446285][    C2]  <TASK>
[ 13.446286][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 13.446293][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 13.446297][ C2] Code: 74 24 10 e8 81 d8 7e fd 48 89 ef e8 39 2b 7f 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> fa e8 72 fd 65 8b 05 53 fb b4 02 85 c0 74 0e 5b 5d c3 cc cc cc
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	81 d8 7e fd 48 89    	sbb    $0x8948fd7e,%eax
   a:	ef                   	out    %eax,(%dx)
   b:	e8 39 2b 7f fd       	call   0xfffffffffd7f2b49
  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 fa e8 72 fd       	call   0xfffffffffd72e929		<-- trapping instruction
  2f:	65 8b 05 53 fb b4 02 	mov    %gs:0x2b4fb53(%rip),%eax        # 0x2b4fb89
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	e8 fa e8 72 fd       	call   0xfffffffffd72e8ff
   5:	65 8b 05 53 fb b4 02 	mov    %gs:0x2b4fb53(%rip),%eax        # 0x2b4fb5f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[   13.446300][    C2] RSP: 0018:ffffc90000727c78 EFLAGS: 00000206
[   13.446307][    C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000080
[   13.446310][    C2] RDX: 0000000000000000 RSI: ffffffffa26a76e1 RDI: 0000000000000001
[   13.446311][    C2] RBP: ffff888001040f40 R08: 0000000000000001 R09: 0000000000000001
[   13.446313][    C2] R10: ffffffffa35f75d7 R11: 00000000000003a0 R12: ffff888004bc21e4
[   13.446315][    C2] R13: 0000000000000000 R14: ffffc90000727cc8 R15: ffff888007267064
[ 13.446321][ C2] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 13.446325][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 13.446329][ C2] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 13.446336][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4148 mm/slub.c:4197 mm/slub.c:4204) 
[ 13.446341][ C2] getname_flags (fs/namei.c:146) 
[ 13.446352][ C2] do_sys_openat2 (./include/linux/fs.h:2903 fs/open.c:1431) 
[ 13.446355][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1422) 
[ 13.446360][ C2] ? trace_rcu_segcb_stats (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745 ./include/trace/events/rcu.h:537) 
[ 13.446364][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.446366][ C2] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3115) 
[ 13.446369][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 13.446374][ C2] __x64_sys_openat (fs/open.c:1463) 
[ 13.446377][ C2] ? fput_close_sync (fs/file_table.c:568) 
[ 13.446384][ C2] ? __pfx___x64_sys_openat (fs/open.c:1463) 
[ 13.446389][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 13.446391][ C2] ? 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) 
[ 13.446396][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 13.446400][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.446403][    C2] RIP: 0033:0x7fad8b8e29a6
[ 13.446409][ C2] Code: c0 f6 c2 40 75 4e 89 d0 45 31 d2 25 00 00 41 00 3d 00 00 41 00 74 3d 64 8b 04 25 18 00 00 00 85 c0 75 61 b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 9e 00 00 00 48 8b 54 24 38 64 48 2b 14 25
All code
========
   0:	c0 f6 c2             	shl    $0xc2,%dh
   3:	40 75 4e             	rex jne 0x54
   6:	89 d0                	mov    %edx,%eax
   8:	45 31 d2             	xor    %r10d,%r10d
   b:	25 00 00 41 00       	and    $0x410000,%eax
  10:	3d 00 00 41 00       	cmp    $0x410000,%eax
  15:	74 3d                	je     0x54
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 61                	jne    0x84
  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 9e 00 00 00    	ja     0xd4
  36:	48 8b 54 24 38       	mov    0x38(%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 9e 00 00 00    	ja     0xaa
   c:	48 8b 54 24 38       	mov    0x38(%rsp),%rdx
  11:	64                   	fs
  12:	48                   	rex.W
  13:	2b                   	.byte 0x2b
  14:	14 25                	adc    $0x25,%al
[   13.446412][    C2] RSP: 002b:00007fff657402e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[   13.446415][    C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fad8b8e29a6
[   13.446416][    C2] RDX: 00000000002a0000 RSI: 0000563e02db94b0 RDI: 000000000000000b
[   13.446418][    C2] RBP: 00007fff65740540 R08: 0000000000000003 R09: 0000000000000020
[   13.446420][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003


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