======================================
| [ 44.760414][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   44.760691][    C2]
| [   44.760763][    C2]
| [   44.760763][    C2] stack backtrace:
[   44.761158][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.761503][    C2] Call Trace:
[   44.761622][    C2]  <IRQ>
[ 44.761697][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 44.761845][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 44.762113][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.762268][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 44.762454][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 44.762599][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 44.762910][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.763061][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 44.763210][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 44.763415][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.763657][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 44.763802][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 44.763962][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 44.764083][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 44.764204][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 44.764446][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 44.764562][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 44.764708][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 44.764852][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 44.765081][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 44.765265][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 44.765416][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 44.765556][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 44.765786][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.765931][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 44.766072][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 44.766209][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 44.766438][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 44.766586][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 44.766755][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 44.766896][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.767050][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.767298][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.767439][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 44.767579][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 44.767724][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.767975][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 44.768133][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 44.768288][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 44.768413][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 44.768655][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 44.768805][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 44.768955][ 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) 
[ 44.769095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.769241][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 44.769392][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 44.769561][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 44.769717][ C2] __do_softirq (kernel/softirq.c:554) 
[ 44.769869][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 44.770086][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   44.770238][    C2]  </IRQ>
[   44.770340][    C2]  <TASK>
[ 44.770420][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 44.770607][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 44.770899][ 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 0f 4f <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 0f 4f 	decl   %gs:0x4f0fbf05(%rip)        # 0x4f0fbf2f
  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
[   44.771477][    C2] RSP: 0018:ffffc900005cf7c8 EFLAGS: 00000286
[   44.771766][    C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff6564179
[   44.771983][    C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb0f40911
[   44.772216][    C2] RBP: ffff8880054c2008 R08: 0000000000000001 R09: fffffbfff65649fa
[   44.772448][    C2] R10: ffffffffb2b24fd7 R11: 0000000000000000 R12: dffffc0000000000
[   44.772668][    C2] R13: 0000000000000001 R14: 0000000000000286 R15: ffff8880054c2078
[ 44.772984][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 44.773181][ C2] p9_virtio_request (net/9p/trans_virtio.c:305) 
[ 44.773341][ C2] ? trace_9p_client_req (./include/trace/events/9p.h:124 (discriminator 52)) 
[ 44.773486][ C2] ? __pfx_p9_virtio_request (net/9p/trans_virtio.c:256) 
[ 44.773722][ C2] ? p9_client_prepare_req (net/9p/client.c:625) 
[ 44.773865][ C2] ? __kasan_kmalloc (mm/kasan/common.c:391) 
[ 44.774033][ C2] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) 
[ 44.774224][ C2] ? vfs_statx (fs/stat.c:251) 
[ 44.774550][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[ 44.774771][ C2] p9_client_rpc (net/9p/client.c:703) 
[ 44.774923][ C2] ? __create_object (mm/kmemleak.c:756) 
[ 44.775072][ C2] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 44.775340][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.775523][ C2] ? __create_object (mm/kmemleak.c:756) 
[ 44.775683][ C2] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.775856][ C2] p9_client_getattr_dotl (net/9p/client.c:1732) 
[ 44.776010][ C2] v9fs_vfs_getattr_dotl (fs/9p/vfs_inode_dotl.c:396) 
[ 44.776171][ C2] ovl_getattr (fs/overlayfs/overlayfs.h:416 fs/overlayfs/inode.c:174) 
[ 44.776355][ C2] ? __pfx_ovl_getattr (fs/overlayfs/inode.c:159) 
[ 44.776536][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 44.776684][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 44.776832][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 44.777003][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 44.777167][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 44.777333][ C2] ? vfs_getattr_nosec (fs/stat.c:112) 
[ 44.777562][ C2] vfs_statx (fs/stat.c:251) 
[ 44.777691][ C2] ? __pfx_vfs_statx (fs/stat.c:234) 
[ 44.777864][ C2] ? 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) 
[ 44.778014][ C2] vfs_fstatat (fs/stat.c:305) 
[ 44.778127][ C2] __do_sys_newfstatat (fs/stat.c:469) 
[ 44.778364][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 44.778517][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 44.778703][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.778872][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   44.779137][    C2] RIP: 0033:0x7f85147c0eee
[ 44.779294][ C2] 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
[   44.779895][    C2] RSP: 002b:00007fff14502a18 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   44.780115][    C2] RAX: ffffffffffffffda RBX: 00007fff14502ac0 RCX: 00007f85147c0eee
[   44.780322][    C2] RDX: 00007fff14502a30 RSI: 00007fff14502ac0 RDI: 00000000ffffff9c
[   44.780719][    C2] RBP: 0006153f36090fb4 R08: 0000000000000000 R09: 00007fff145028b0
[   44.780933][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff14502a30


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage