======================================
| [ 35.089541][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   35.089718][    C0]
| [   35.089790][    C0]
| [   35.089790][    C0] stack backtrace:
[   35.090177][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.090493][    C0] Call Trace:
[   35.090605][    C0]  <IRQ>
[ 35.090678][ C0] dump_stack_lvl (lib/dump_stack.c:117) 
[ 35.090824][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 35.091004][ C0] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.091238][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 35.091414][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 35.091555][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 35.091703][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.091853][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 35.091996][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 35.092139][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.092283][ C0] ? save_trace (kernel/locking/lockdep.c:586) 
[ 35.092512][ C0] mark_lock (kernel/locking/lockdep.c:4678) 
[ 35.092619][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.092762][ C0] mark_usage (kernel/locking/lockdep.c:4567) 
[ 35.092869][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 35.093013][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 35.093244][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 35.093387][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 35.093527][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 35.093671][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 35.093814][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 35.093955][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 35.094094][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 35.094237][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 35.094465][ C0] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 35.094606][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 35.094754][ C0] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 35.094895][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 35.095216][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 35.095357][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.095497][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 35.095638][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.095782][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 35.095930][ C0] call_timer_fn (kernel/time/timer.c:1793) 
[ 35.096079][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.096224][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 35.096365][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 35.096593][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 35.096706][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 35.096848][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 35.096989][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 35.097221][ 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) 
[ 35.097362][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.097507][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 35.097648][ C0] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 35.097793][ C0] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 35.097935][ C0] __do_softirq (kernel/softirq.c:554) 
[ 35.098078][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 35.098191][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   35.098333][    C0]  </IRQ>
[   35.098405][    C0]  <TASK>
[ 35.098563][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 35.098747][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 35.098932][ C0] Code: 10 e8 81 21 79 fd 48 89 ef e8 b9 91 79 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 f5 7b 2d 47 <74> 0e 5b 5d c3 cc cc cc cc e8 0f f0 9c fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	81 21 79 fd 48 89    	andl   $0x8948fd79,(%rcx)
   8:	ef                   	out    %eax,(%dx)
   9:	e8 b9 91 79 fd       	call   0xfffffffffd7991c7
   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 f5 7b 2d 47 	decl   %gs:0x472d7bf5(%rip)        # 0x472d7c1f
  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 0f f0 9c fd       	call   0xfffffffffd9cf047
  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 0f f0 9c fd       	call   0xfffffffffd9cf01d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[   35.099528][    C0] RSP: 0018:ffffc90000bef6b0 EFLAGS: 00000282
[   35.099715][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff75322d9
[   35.100019][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb8d64de1
[   35.100231][    C0] RBP: ffff888001041080 R08: 0000000000000001 R09: fffffbfff7532b5a
[   35.100442][    C0] R10: ffffffffba995ad7 R11: 0000000000001000 R12: ffff888001041080
[   35.100744][    C0] R13: ffffea00003cce00 R14: ffff8880010433c0 R15: ffff88800f33c000
[ 35.100958][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 35.101137][ C0] get_partial_node.part.0 (mm/slub.c:2623) 
[ 35.101368][ C0] ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 35.101510][ C0] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 35.101651][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 35.101794][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 35.102026][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 35.102168][ C0] ? __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 35.102309][ C0] __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 35.102420][ C0] p9_fcall_init (net/9p/client.c:232) 
[ 35.102562][ C0] p9_tag_alloc (net/9p/client.c:295) 
[ 35.102792][ C0] ? __pfx_p9_tag_alloc (net/9p/client.c:277) 
[ 35.102934][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.103076][ C0] ? stack_depot_save_flags (lib/stackdepot.c:609) 
[ 35.103227][ 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) 
[ 35.103455][ C0] p9_client_prepare_req (net/9p/client.c:641) 
[ 35.103596][ C0] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 35.103738][ C0] ? __kasan_kmalloc (mm/kasan/common.c:391) 
[ 35.103888][ C0] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) 
[ 35.104149][ C0] ? vfs_fstat (./include/linux/file.h:47 fs/stat.c:199) 
[ 35.104260][ C0] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) 
[ 35.104400][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 35.104542][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 35.104685][ C0] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 35.104827][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.104971][ C0] ? __create_object (mm/kmemleak.c:756) 
[ 35.105126][ C0] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.105272][ C0] p9_client_getattr_dotl (net/9p/client.c:1732) 
[ 35.105504][ C0] v9fs_vfs_getattr_dotl (fs/9p/vfs_inode_dotl.c:396) 
[ 35.105645][ C0] ovl_getattr (fs/overlayfs/overlayfs.h:416 fs/overlayfs/inode.c:174) 
[ 35.105790][ C0] ? __pfx_ovl_getattr (fs/overlayfs/inode.c:159) 
[ 35.105932][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 35.106262][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 35.106404][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 35.106550][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 35.106691][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 35.106836][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 35.106977][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 35.107119][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 35.107262][ C0] ? vfs_getattr_nosec (fs/stat.c:112) 
[ 35.107404][ C0] vfs_fstat (./include/linux/file.h:47 fs/stat.c:199) 
[ 35.107598][ C0] __do_sys_newfstatat (fs/stat.c:469) 
[ 35.107739][ C0] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 35.107890][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 35.108070][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.108301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   35.108477][    C0] RIP: 0033:0x7efd04e89eae
[ 35.108622][ 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 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
[   35.109123][    C0] RSP: 002b:00007fffde8d0c38 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
[   35.109344][    C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efd04e89eae
[   35.109644][    C0] RDX: 00007fffde8d0cd0 RSI: 00007efd04e8dcfb RDI: 0000000000000005
[   35.109858][    C0] RBP: 00007fffde8d0d90 R08: 00007efd04dfb510 R09: 00007efd04e5b940
[   35.110069][    C0] R10: 0000000000001000 R11: 0000000000000206 R12: 00007efd04e5b940


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage