======================================
| [ 43.484744][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   43.484946][    C3]
| [   43.485025][    C3]
| [   43.485025][    C3] stack backtrace:
[   43.485562][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   43.486024][    C3] Call Trace:
[   43.486142][    C3]  <IRQ>
[ 43.486223][ C3] dump_stack_lvl (lib/dump_stack.c:117) 
[ 43.486381][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 43.486572][ C3] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 43.486825][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 43.487031][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 43.487185][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 43.487336][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 43.487591][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 43.487743][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 43.487905][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 43.488061][ C3] ? save_trace (kernel/locking/lockdep.c:586) 
[ 43.488216][ C3] mark_lock (kernel/locking/lockdep.c:4678) 
[ 43.488331][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 43.488489][ C3] mark_usage (kernel/locking/lockdep.c:4567) 
[ 43.488604][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 43.488756][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 43.489011][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.489164][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 43.489317][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.489470][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 43.489721][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 43.489886][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.490037][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.490189][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.490437][ C3] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 43.490590][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.490740][ C3] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.490895][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 43.491142][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.491301][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.491468][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.491619][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.491773][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.492115][ C3] call_timer_fn (kernel/time/timer.c:1793) 
[ 43.492353][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.492597][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.492828][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 43.493093][ C3] ? 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) 
[ 43.493305][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 43.493461][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 43.493614][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.493972][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 43.494130][ C3] ? 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) 
[ 43.494292][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 43.494451][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.494695][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 43.494856][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 43.495014][ C3] __do_softirq (kernel/softirq.c:554) 
[ 43.495188][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 43.495305][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   43.495560][    C3]  </IRQ>
[   43.495637][    C3]  <TASK>
[ 43.495714][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 43.495919][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 43.496117][ C3] 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 af 56 <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 af 56 	decl   %gs:0x56afbf05(%rip)        # 0x56afbf2f
  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
[   43.496682][    C3] RSP: 0018:ffffc9000096f340 EFLAGS: 00000282
[   43.497000][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff58e7e58
[   43.497232][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa9540911
[   43.497461][    C3] RBP: ffff888001040400 R08: 0000000000000001 R09: fffffbfff58e38af
[   43.497798][    C3] R10: ffffffffac71c57f R11: 0000000000000010 R12: ffff888001040400
[   43.498033][    C3] R13: ffffea0000127480 R14: ffff8880010424c0 R15: ffff8880049d2d90
[ 43.498266][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 43.498555][ C3] get_partial_node.part.0 (mm/slub.c:2623) 
[ 43.498715][ C3] ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 43.498878][ C3] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 43.499039][ C3] ? p9pdu_vreadf (net/9p/protocol.c:453) 
[ 43.499193][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 43.499350][ C3] ? p9pdu_vreadf (net/9p/protocol.c:453) 
[ 43.499505][ C3] ? __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 43.499658][ C3] __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 43.499773][ C3] p9pdu_vreadf (net/9p/protocol.c:453) 
[ 43.500123][ C3] ? __pfx_p9pdu_vreadf (net/9p/protocol.c:260) 
[ 43.500365][ C3] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 43.500628][ C3] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 43.500911][ C3] p9pdu_readf (net/9p/protocol.c:696) 
[ 43.501129][ C3] ? __pfx_p9pdu_readf (net/9p/protocol.c:696) 
[ 43.501283][ C3] ? p9_fid_create (./include/linux/local_lock_internal.h:38 ./include/linux/idr.h:174 net/9p/client.c:867) 
[ 43.501451][ C3] p9_client_walk (net/9p/client.c:1175) 
[ 43.501606][ C3] ? __pfx_p9_client_walk (net/9p/client.c:1143) 
[ 43.501857][ C3] ? d_alloc_parallel (./arch/x86/include/asm/bitops.h:94 ./arch/x86/include/asm/bitops.h:112 ./include/asm-generic/bitops/instrumented-lock.h:43 ./include/linux/bit_spinlock.h:80 ./include/linux/list_bl.h:153 fs/dcache.c:2556) 
[ 43.502027][ C3] ? v9fs_fid_lookup_with_uid (fs/9p/fid.c:181) 
[ 43.502263][ C3] ? v9fs_vfs_lookup.part.0 (fs/9p/vfs_inode.c:676) 
[ 43.502494][ C3] v9fs_vfs_lookup.part.0 (fs/9p/vfs_inode.c:676) 
[ 43.502879][ C3] ? __pfx_v9fs_vfs_lookup.part.0 (fs/9p/vfs_inode.c:649) 
[ 43.503178][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4892) 
[ 43.503427][ C3] __lookup_slow (fs/namei.c:1692) 
[ 43.503674][ C3] ? __pfx___lookup_slow (fs/namei.c:1668) 
[ 43.504085][ C3] ? walk_component (fs/namei.c:1709 fs/namei.c:2004) 
[ 43.504343][ C3] walk_component (./include/linux/fs.h:808 fs/namei.c:1710 fs/namei.c:2004) 
[ 43.504607][ C3] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) 
[ 43.504912][ C3] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) 
[ 43.505223][ C3] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 43.505377][ C3] ? 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) 
[ 43.505528][ C3] path_lookupat (fs/namei.c:2254 (discriminator 2) fs/namei.c:2484 (discriminator 2)) 
[ 43.505689][ C3] filename_lookup (fs/namei.c:2514) 
[ 43.505960][ C3] ? __pfx_filename_lookup (fs/namei.c:2508) 
[ 43.506117][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 43.506275][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 43.506431][ C3] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 43.506593][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 43.506844][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 43.507006][ C3] vfs_statx (fs/stat.c:244) 
[ 43.507123][ C3] ? __pfx_vfs_statx (fs/stat.c:234) 
[ 43.507280][ C3] ? getname_flags (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 fs/namei.c:190) 
[ 43.507637][ C3] vfs_fstatat (fs/stat.c:305) 
[ 43.507762][ C3] __do_sys_newfstatat (fs/stat.c:469) 
[ 43.507922][ C3] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 43.508078][ C3] ? __x64_sys_openat (fs/open.c:1432) 
[ 43.508231][ C3] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 43.508381][ C3] ? __pfx_do_faccessat (fs/open.c:465) 
[ 43.508536][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 43.508723][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 43.508884][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   43.509189][    C3] RIP: 0033:0x7f3f2ad89eae
[ 43.509349][ C3] 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 f7 d8 89 05
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:	f7 d8                	neg    %eax
  3e:	89                   	.byte 0x89
  3f:	05                   	.byte 0x5

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:	f7 d8                	neg    %eax
  14:	89                   	.byte 0x89
  15:	05                   	.byte 0x5
[   43.509997][    C3] RSP: 002b:00007fff86823908 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   43.510227][    C3] RAX: ffffffffffffffda RBX: 000000000000000e RCX: 00007f3f2ad89eae
[   43.510557][    C3] RDX: 00007fff868239e0 RSI: 00007fff86823910 RDI: 00000000ffffff9c
[   43.510783][    C3] RBP: 00007fff86823aa0 R08: 00000000ffffffff R09: 00007fff86823910
[   43.511021][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff86823917


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage