======================================
| [ 43.582537][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   43.582740][    C2]
| [   43.582818][    C2]
| [   43.582818][    C2] stack backtrace:
[   43.583339][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   43.583681][    C2] Call Trace:
[   43.583798][    C2]  <IRQ>
[ 43.583987][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 43.584147][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 43.584337][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 43.584529][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 43.584685][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 43.584837][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 43.584992][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 43.585146][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 43.585303][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 43.585458][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 43.585611][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 43.585727][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 43.585844][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 43.586004][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 43.586160][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 43.586314][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 43.586468][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 43.586714][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 43.586866][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.587018][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 43.587169][ C2] _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:177 kernel/locking/spinlock.c:252) 
[ 43.587326][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 43.587566][ C2] ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) 
[ 43.587722][ C2] ndisc_send_ns (net/ipv6/ndisc.c:658) 
[ 43.587883][ C2] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653) 
[ 43.588048][ C2] ? __ipv6_chk_addr_and_flags (net/ipv6/addrconf.c:2009) 
[ 43.588340][ C2] ndisc_solicit (net/ipv6/ndisc.c:736) 
[ 43.588496][ C2] ? __pfx_ndisc_solicit (net/ipv6/ndisc.c:736) 
[ 43.588649][ C2] ? neigh_probe (net/core/neighbour.c:1074) 
[ 43.588803][ C2] neigh_probe (net/core/neighbour.c:1075) 
[ 43.589023][ C2] neigh_timer_handler (net/core/neighbour.c:1163) 
[ 43.589181][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.589350][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) 
[ 43.589506][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 43.589661][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.589812][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.589965][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 43.590118][ C2] ? 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) 
[ 43.590273][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 43.590427][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 43.590584][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) 
[ 43.590741][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 43.590896][ C2] ? 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) 
[ 43.591150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 43.591303][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.591460][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 43.591616][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 43.591857][ C2] __do_softirq (kernel/softirq.c:554) 
[ 43.592012][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 43.592127][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   43.592287][    C2]  </IRQ>
[   43.592368][    C2]  <TASK>
[ 43.592449][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 43.592737][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 43.592937][ C2] 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 ef 43 <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 ef 43 	decl   %gs:0x43efbf05(%rip)        # 0x43efbf2f
  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
[   43.593585][    C2] RSP: 0018:ffffc900005ffa18 EFLAGS: 00000286
[   43.593783][    C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff7e6596e
[   43.594104][    C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffbc140911
[   43.594327][    C2] RBP: ffff888001041080 R08: 0000000000000001 R09: fffffbfff7e638a9
[   43.594556][    C2] R10: ffffffffbf31c54f R11: 0000000000001000 R12: ffff8880063bc000
[   43.594881][    C2] R13: 0000000000000000 R14: ffffc900005ffa68 R15: ffff888002ad1000
[ 43.595130][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 43.595338][ C2] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 43.595507][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) 
[ 43.595766][ C2] __kasan_slab_alloc (mm/kasan/common.c:322) 
[ 43.595934][ C2] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) 
[ 43.596099][ C2] ? 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) 
[ 43.596253][ C2] alloc_empty_file (./include/linux/slab.h:739 fs/file_table.c:202) 
[ 43.596494][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 43.596649][ C2] path_openat (fs/namei.c:3785) 
[ 43.596762][ C2] ? __pfx_path_openat (fs/namei.c:3781) 
[ 43.596918][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 43.597160][ C2] do_filp_open (fs/namei.c:3826) 
[ 43.597309][ C2] ? __pfx_do_filp_open (fs/namei.c:3820) 
[ 43.597457][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 43.597605][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 43.597752][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 43.597977][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 43.598131][ C2] ? 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) 
[ 43.598279][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 43.598426][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 43.598539][ C2] ? 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) 
[ 43.598686][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 43.598834][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 43.598950][ C2] do_sys_openat2 (fs/open.c:1406) 
[ 43.599097][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1392) 
[ 43.599245][ C2] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 52)) 
[ 43.599398][ C2] ? __rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 43.599598][ C2] __x64_sys_openat (fs/open.c:1432) 
[ 43.599747][ C2] ? __pfx_task_work_run (kernel/task_work.c:148) 
[ 43.599901][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 43.600050][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 43.600199][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   43.600382][    C2] RIP: 0033:0x7fb22fad6786
[ 43.600642][ 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
[   43.601226][    C2] RSP: 002b:00007fffa8636d30 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[   43.601547][    C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb22fad6786
[   43.601767][    C2] RDX: 00000000002a0000 RSI: 000056414721c060 RDI: 000000000000000d
[   43.602175][    C2] RBP: 00007fffa8636f90 R08: 00000000ffffffff R09: 0000000000000000
[   43.602396][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage