======================================
| [ 44.389509][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   44.389815][    C1]
| [   44.389900][    C1]
| [   44.389900][    C1] stack backtrace:
[   44.390361][    C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.390736][    C1] Call Trace:
[   44.390865][    C1]  <IRQ>
[ 44.390954][ C1] dump_stack_lvl (lib/dump_stack.c:117) 
[ 44.391123][ C1] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 44.391431][ C1] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 44.391648][ C1] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 44.391816][ C1] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 44.391982][ C1] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.392150][ C1] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 44.392326][ C1] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 44.392494][ C1] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.392667][ C1] ? add_chain_cache (kernel/locking/lockdep.c:3730) 
[ 44.392937][ C1] ? save_trace (kernel/locking/lockdep.c:586) 
[ 44.393109][ C1] mark_lock (kernel/locking/lockdep.c:4678) 
[ 44.393235][ C1] mark_usage (kernel/locking/lockdep.c:4567) 
[ 44.393362][ C1] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 44.393532][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 44.393706][ C1] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 44.394004][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 44.394170][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.394522][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 44.394696][ C1] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 44.394862][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.395104][ C1] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.395270][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.395512][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 44.395685][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.395927][ C1] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 44.396272][ C1] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 44.396554][ C1] call_timer_fn (kernel/time/timer.c:1793) 
[ 44.396725][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.396890][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.397058][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 44.397223][ C1] ? 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) 
[ 44.397389][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 44.397557][ C1] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 44.397732][ C1] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 44.398014][ C1] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 44.398178][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 44.398445][ C1] ? 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) 
[ 44.398615][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.398783][ C1] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.398949][ C1] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 44.399117][ C1] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 44.399288][ C1] 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) 
[ 44.399458][ C1] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) 
[ 44.399682][ C1] ? 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) 
[ 44.399850][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 44.400078][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 44.400244][ C1] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) 
[ 44.400408][ C1] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) 
[ 44.400570][ C1] ? 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) 
[ 44.400747][ C1] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) 
[ 44.400916][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 44.401132][ C1] __do_softirq (kernel/softirq.c:554) 
[ 44.401299][ C1] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 44.401525][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   44.401705][    C1]  </IRQ>
[   44.401795][    C1]  <TASK>
[ 44.401880][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 44.402093][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 44.402308][ C1] 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 8f 70 <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 8f 70 	decl   %gs:0x708fbf05(%rip)        # 0x708fbf2f
  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
[   44.402902][    C1] RSP: 0018:ffffc90000c4f908 EFLAGS: 00000246
[   44.403218][    C1] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff2525955
[   44.403491][    C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8f740911
[   44.403746][    C1] RBP: ffff88800104f440 R08: 0000000000000001 R09: fffffbfff25238a9
[   44.403993][    C1] R10: ffffffff9291c54f R11: 0000000000000008 R12: ffff888007844788
[   44.404253][    C1] R13: 0000000000000000 R14: ffffc90000c4f958 R15: ffff8880078457c8
[ 44.404534][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 44.404749][ C1] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 44.404920][ C1] ? netfs_alloc_request (./include/linux/slab.h:632 (discriminator 4) ./include/linux/slab.h:749 (discriminator 4) fs/netfs/objects.c:29 (discriminator 4)) 
[ 44.405105][ C1] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) 
[ 44.405275][ C1] __kasan_slab_alloc (mm/kasan/common.c:322) 
[ 44.405548][ C1] __kmalloc (mm/slub.c:3799 mm/slub.c:3845 mm/slub.c:3965 mm/slub.c:3979) 
[ 44.405680][ C1] ? down_read_interruptible (kernel/locking/rwsem.c:1249 kernel/locking/rwsem.c:1268 kernel/locking/rwsem.c:1537) 
[ 44.405847][ C1] netfs_alloc_request (./include/linux/slab.h:632 (discriminator 4) ./include/linux/slab.h:749 (discriminator 4) fs/netfs/objects.c:29 (discriminator 4)) 
[ 44.406015][ C1] netfs_unbuffered_read_iter_locked (fs/netfs/direct_read.c:46) 
[ 44.406235][ C1] netfs_unbuffered_read_iter (fs/netfs/direct_read.c:121) 
[ 44.406403][ C1] do_iter_readv_writev (./include/linux/fs.h:2102 fs/read_write.c:739) 
[ 44.406570][ C1] ? __pfx_do_iter_readv_writev (fs/read_write.c:728) 
[ 44.406741][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 44.407010][ C1] vfs_iter_read (fs/read_write.c:830) 
[ 44.407179][ C1] backing_file_read_iter (fs/backing-file.c:160) 
[ 44.407349][ C1] ovl_read_iter (./include/linux/file.h:47 fs/overlayfs/file.c:283) 
[ 44.407626][ C1] ? __pfx_ovl_read_iter (fs/overlayfs/file.c:264) 
[ 44.407798][ C1] ? __pfx_ovl_file_accessed (fs/overlayfs/file.c:236) 
[ 44.407955][ C1] vfs_read (./include/linux/fs.h:2102 fs/read_write.c:395 fs/read_write.c:476) 
[ 44.408072][ C1] ? kmem_cache_free (mm/slub.c:4280 mm/slub.c:4344) 
[ 44.408230][ C1] ? __pfx_vfs_read (fs/read_write.c:457) 
[ 44.408386][ C1] ? __pfx_do_sys_openat2 (fs/open.c:1392) 
[ 44.408645][ C1] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.408800][ C1] __x64_sys_pread64 (fs/read_write.c:671 fs/read_write.c:681 fs/read_write.c:678 fs/read_write.c:678) 
[ 44.408953][ C1] ? __pfx___x64_sys_pread64 (fs/read_write.c:678) 
[ 44.409115][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.409271][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   44.409463][    C1] RIP: 0033:0x7f500ca7e16e
[ 44.409625][ C1] Code: 00 00 00 00 f7 d8 89 05 90 f0 00 00 48 c7 c0 ff ff ff ff c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 49 89 ca b8 11 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 f7 d8 89 05
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	f7 d8                	neg    %eax
   6:	89 05 90 f0 00 00    	mov    %eax,0xf090(%rip)        # 0xf09c
   c:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  1b:	00 
  1c:	f3 0f 1e fa          	endbr64
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 11 00 00 00       	mov    $0x11,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 0a                	ja     0x3c
  32:	c3                   	ret
  33:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  3a:	00 00 
  3c:	f7 d8                	neg    %eax
  3e:	89                   	.byte 0x89
  3f:	05                   	.byte 0x5

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 0a                	ja     0x12
   8:	c3                   	ret
   9:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  10:	00 00 
  12:	f7 d8                	neg    %eax
  14:	89                   	.byte 0x89
  15:	05                   	.byte 0x5
[   44.410362][    C1] RSP: 002b:00007fff342afae8 EFLAGS: 00000206 ORIG_RAX: 0000000000000011
[   44.410603][    C1] RAX: ffffffffffffffda RBX: 00007fff342afcd8 RCX: 00007f500ca7e16e
[   44.410837][    C1] RDX: 0000000000000050 RSI: 00007fff342afaf0 RDI: 0000000000000005
[   44.411068][    C1] RBP: 00007fff342afed0 R08: 00007fff342afb50 R09: 0000000000000000
[   44.411298][    C1] R10: 0000000000000350 R11: 0000000000000206 R12: 00007fff342afaf0


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage