======================================
| [ 44.908884][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   44.909180][    C0]
| [   44.909297][    C0]
| [   44.909297][    C0] stack backtrace:
[   44.910133][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.910838][    C0] Call Trace:
[   44.911023][    C0]  <IRQ>
[ 44.911147][ C0] dump_stack_lvl (lib/dump_stack.c:117) 
[ 44.911560][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 44.911865][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 44.912166][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 44.912401][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 44.912816][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.913053][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 44.913300][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 44.913542][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.913958][ C0] ? add_chain_cache (kernel/locking/lockdep.c:3730) 
[ 44.914196][ C0] ? save_trace (kernel/locking/lockdep.c:586) 
[ 44.914437][ C0] mark_lock (kernel/locking/lockdep.c:4678) 
[ 44.914624][ C0] mark_usage (kernel/locking/lockdep.c:4567) 
[ 44.914806][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 44.915202][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 44.915432][ C0] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 44.915834][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 44.916064][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.916415][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 44.916650][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 44.916880][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.917235][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.917464][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.917818][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 44.918048][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.918556][ C0] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.918924][ C0] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 44.919343][ C0] call_timer_fn (kernel/time/timer.c:1793) 
[ 44.919749][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.919979][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.920208][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 44.920436][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 44.920669][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 44.921061][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 44.921295][ C0] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 44.921886][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 44.922126][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 44.922532][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 44.922773][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.923008][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.923259][ C0] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 44.923658][ C0] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 44.923899][ C0] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:127 kernel/time/timer_migration.c:925) 
[ 44.924138][ C0] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) 
[ 44.924444][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 44.924848][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 44.925027][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 44.925268][ C0] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) 
[ 44.925515][ C0] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) 
[ 44.926096][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 44.926332][ C0] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) 
[ 44.926582][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 44.926884][ C0] __do_softirq (kernel/softirq.c:554) 
[ 44.927122][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 44.927302][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   44.927538][    C0]  </IRQ>
[   44.927824][    C0]  <TASK>
[ 44.927948][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 44.928248][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 44.928731][ C0] Code: 10 e8 21 49 9b fd 48 89 ef e8 59 b9 9b fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 05 bf 2f 4c <74> 0e 5b 5d c3 cc cc cc cc e8 4f b3 be fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	21 49 9b             	and    %ecx,-0x65(%rcx)
   5:	fd                   	std
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 59 b9 9b fd       	call   0xfffffffffd9bb967
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 05 bf 2f 4c 	decl   %gs:0x4c2fbf05(%rip)        # 0x4c2fbf2f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 4f b3 be fd       	call   0xfffffffffdbeb387
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 4f b3 be fd       	call   0xfffffffffdbeb35d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[   44.929569][    C0] RSP: 0018:ffffc9000093fc38 EFLAGS: 00000246
[   44.930048][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff6de5955
[   44.930407][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb3d40911
[   44.930941][    C0] RBP: ffff8880010411c0 R08: 0000000000000001 R09: fffffbfff6de38a9
[   44.931298][    C0] R10: ffffffffb6f1c54f R11: 0000000000002000 R12: ffff888001043540
[   44.931662][    C0] R13: ffff88800441a000 R14: 0000000000000286 R15: ffff8880010411c0
[ 44.932201][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 44.932500][ C0] free_to_partial_list (mm/slub.c:4071) 
[ 44.932735][ C0] ? qlist_free_all (mm/kasan/quarantine.c:163 mm/kasan/quarantine.c:179) 
[ 44.932981][ C0] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 44.933386][ C0] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) 
[ 44.933627][ C0] __kasan_slab_alloc (mm/kasan/common.c:322) 
[ 44.933862][ C0] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) 
[ 44.934105][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 44.934365][ C0] getname_flags (fs/namei.c:139) 
[ 44.934601][ C0] vfs_fstatat (fs/stat.c:304) 
[ 44.934960][ C0] __do_sys_newfstatat (fs/stat.c:469) 
[ 44.935198][ C0] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 44.935427][ C0] ? __rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 44.935896][ C0] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 44.936199][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 44.936502][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.936745][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   44.937205][    C0] RIP: 0033:0x7fc7dd5f7eee
[ 44.937461][ C0] Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 07 00 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 0b 31 c0 c3 0f 1f 84 00 00 00 00 00 48 8b 15 d9
All code
========
   0:	48 89 f2             	mov    %rsi,%rdx
   3:	b9 00 01 00 00       	mov    $0x100,%ecx
   8:	48 89 fe             	mov    %rdi,%rsi
   b:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  10:	e9 07 00 00 00       	jmp    0x1c
  15:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1c:	f3 0f 1e fa          	endbr64
  20:	41 89 ca             	mov    %ecx,%r10d
  23:	b8 06 01 00 00       	mov    $0x106,%eax
  28:	0f 05                	syscall
  2a:*	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax		<-- trapping instruction
  2f:	77 0b                	ja     0x3c
  31:	31 c0                	xor    %eax,%eax
  33:	c3                   	ret
  34:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  3b:	00 
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	15                   	.byte 0x15
  3f:	d9                   	.byte 0xd9

Code starting with the faulting instruction
===========================================
   0:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   5:	77 0b                	ja     0x12
   7:	31 c0                	xor    %eax,%eax
   9:	c3                   	ret
   a:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  11:	00 
  12:	48                   	rex.W
  13:	8b                   	.byte 0x8b
  14:	15                   	.byte 0x15
  15:	d9                   	.byte 0xd9
[   44.938489][    C0] RSP: 002b:00007ffc1bb979b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   44.938850][    C0] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fc7dd5f7eee
[   44.939377][    C0] RDX: 00007ffc1bb979c0 RSI: 000055aca51d10a0 RDI: 00000000ffffff9c
[   44.939747][    C0] RBP: 000055aca51d10a0 R08: 00007ffc1bb97bc8 R09: 000055aca51c1502
[   44.940099][    C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage