======================================
| [ 30.589442][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   30.589781][    C0]
| [   30.589915][    C0]
| [   30.589915][    C0] stack backtrace:
[   30.590825][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   30.591421][    C0] Call Trace:
[   30.591632][    C0]  <IRQ>
[ 30.591773][ C0] dump_stack_lvl (lib/dump_stack.c:117) 
[ 30.592048][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 30.592382][ C0] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 30.592663][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 30.592997][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 30.593266][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 30.593543][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 30.593994][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 30.594256][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 30.594515][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 30.594773][ C0] ? save_trace (kernel/locking/lockdep.c:586) 
[ 30.595022][ C0] mark_lock (kernel/locking/lockdep.c:4678) 
[ 30.595367][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 30.595613][ C0] mark_usage (kernel/locking/lockdep.c:4567) 
[ 30.595804][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 30.596052][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 30.596465][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 30.596711][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 30.596954][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 30.597199][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 30.597442][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 30.597690][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 30.597964][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 30.598232][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 30.598514][ C0] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 30.598788][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 30.599055][ C0] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 30.599326][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 30.599597][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 30.600050][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 30.600317][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 30.600592][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 30.600862][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 30.601312][ C0] call_timer_fn (kernel/time/timer.c:1793) 
[ 30.601582][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 30.601854][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 30.602127][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 30.602406][ C0] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 30.602681][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 30.602955][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 30.603225][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 30.603498][ 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) 
[ 30.603775][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 30.604045][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 30.604313][ C0] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 30.604584][ C0] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 30.605035][ C0] __do_softirq (kernel/softirq.c:554) 
[ 30.605307][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 30.605518][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   30.605789][    C0]  </IRQ>
[   30.605929][    C0]  <TASK>
[ 30.606068][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 30.606585][ C0] RIP: 0010:unwind_next_frame (./arch/x86/include/asm/stacktrace.h:60 arch/x86/kernel/unwind_orc.c:665) 
[ 30.606931][ C0] Code: 80 3c 02 00 0f 85 d8 05 00 00 49 8b 45 10 48 39 dd 0f 87 f6 fd ff ff 48 39 d8 0f 86 ed fd ff ff 48 8d 53 08 48 39 ea 0f 97 c1 <48> 39 c2 0f 96 c0 84 c1 0f 84 d5 fd ff ff 48 39 5c 24 18 0f 82 ca
All code
========
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 d8 05 00 00    	jne    0x5e2
   a:	49 8b 45 10          	mov    0x10(%r13),%rax
   e:	48 39 dd             	cmp    %rbx,%rbp
  11:	0f 87 f6 fd ff ff    	ja     0xfffffffffffffe0d
  17:	48 39 d8             	cmp    %rbx,%rax
  1a:	0f 86 ed fd ff ff    	jbe    0xfffffffffffffe0d
  20:	48 8d 53 08          	lea    0x8(%rbx),%rdx
  24:	48 39 ea             	cmp    %rbp,%rdx
  27:	0f 97 c1             	seta   %cl
  2a:*	48 39 c2             	cmp    %rax,%rdx		<-- trapping instruction
  2d:	0f 96 c0             	setbe  %al
  30:	84 c1                	test   %al,%cl
  32:	0f 84 d5 fd ff ff    	je     0xfffffffffffffe0d
  38:	48 39 5c 24 18       	cmp    %rbx,0x18(%rsp)
  3d:	0f                   	.byte 0xf
  3e:	82                   	(bad)
  3f:	ca                   	.byte 0xca

Code starting with the faulting instruction
===========================================
   0:	48 39 c2             	cmp    %rax,%rdx
   3:	0f 96 c0             	setbe  %al
   6:	84 c1                	test   %al,%cl
   8:	0f 84 d5 fd ff ff    	je     0xfffffffffffffde3
   e:	48 39 5c 24 18       	cmp    %rbx,0x18(%rsp)
  13:	0f                   	.byte 0xf
  14:	82                   	(bad)
  15:	ca                   	.byte 0xca
[   30.608021][    C0] RSP: 0018:ffffc900006cf310 EFLAGS: 00000202
[   30.608332][    C0] RAX: ffffc900006d0000 RBX: ffffc900006cff30 RCX: ffffc900006d0001
[   30.608710][    C0] RDX: ffffc900006cff38 RSI: 0000000000000001 RDI: ffffc900006cf420
[   30.609072][    C0] RBP: ffffc900006c8000 R08: ffffc900006cf450 R09: 1ffff920000d9e6b
[   30.609436][    C0] R10: ffffc900006cf410 R11: ffffc900006cf451 R12: 1ffff920000d9e6b
[   30.609808][    C0] R13: ffffc900006cf410 R14: ffffffffad829560 R15: ffffc900006cff28
[ 30.610182][ C0] ? __x64_sys_openat (fs/open.c:1432) 
[ 30.610434][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 30.610682][ C0] ? __x64_sys_openat (fs/open.c:1432) 
[ 30.611136][ C0] ? kernel_text_address (kernel/extable.c:99) 
[ 30.611406][ C0] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 30.611750][ C0] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 30.612024][ C0] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 30.612483][ C0] stack_trace_save (kernel/stacktrace.c:123) 
[ 30.612752][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 30.613023][ C0] ? ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 30.613296][ C0] ? kmem_cache_alloc (./include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) 
[ 30.613746][ C0] ? __alloc_object (mm/kmemleak.c:466 mm/kmemleak.c:645) 
[ 30.614019][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 30.614289][ C0] set_track_prepare (mm/slub.c:889) 
[ 30.614562][ C0] ? __pfx_set_track_prepare (mm/slub.c:880) 
[ 30.615018][ C0] ? kmalloc_trace (./include/linux/kmemleak.h:42 mm/slub.c:3802 mm/slub.c:3845 mm/slub.c:3992) 
[ 30.615291][ C0] ? p9_fid_create (./include/linux/slab.h:628 ./include/linux/slab.h:749 net/9p/client.c:853) 
[ 30.615560][ C0] ? p9_client_walk (net/9p/client.c:1154) 
[ 30.615829][ C0] ? v9fs_file_open (fs/9p/fid.h:23 fs/9p/fid.h:33 fs/9p/vfs_file.c:56) 
[ 30.616100][ C0] ? do_dentry_open (fs/open.c:955) 
[ 30.616555][ C0] ? backing_file_open (fs/backing-file.c:45) 
[ 30.616825][ C0] ? ovl_open_realfile (fs/overlayfs/file.c:54) 
[ 30.617096][ C0] ? ovl_open (fs/overlayfs/file.c:169) 
[ 30.617310][ C0] ? do_dentry_open (fs/open.c:955) 
[ 30.617758][ C0] ? do_open (fs/namei.c:3643) 
[ 30.617961][ C0] ? path_openat (fs/namei.c:3799) 
[ 30.618225][ C0] ? do_filp_open (fs/namei.c:3826) 
[ 30.618499][ C0] ? do_sys_openat2 (fs/open.c:1406) 
[ 30.618766][ C0] ? __x64_sys_openat (fs/open.c:1432) 
[ 30.619223][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 30.619498][ C0] __alloc_object (mm/kmemleak.c:681) 
[ 30.619770][ C0] __create_object (mm/kmemleak.c:750) 
[ 30.620041][ C0] kmalloc_trace (./include/linux/kmemleak.h:42 mm/slub.c:3802 mm/slub.c:3845 mm/slub.c:3992) 
[ 30.620473][ C0] p9_fid_create (./include/linux/slab.h:628 ./include/linux/slab.h:749 net/9p/client.c:853) 
[ 30.620729][ C0] p9_client_walk (net/9p/client.c:1154) 
[ 30.620975][ C0] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) 
[ 30.621222][ C0] ? __pfx_p9_client_walk (net/9p/client.c:1143) 
[ 30.621643][ C0] ? v9fs_fid_lookup_with_uid (fs/9p/fid.c:181) 
[ 30.621889][ C0] ? v9fs_file_open (fs/9p/fid.h:23 fs/9p/fid.h:33 fs/9p/vfs_file.c:56) 
[ 30.622136][ C0] v9fs_file_open (fs/9p/fid.h:23 fs/9p/fid.h:33 fs/9p/vfs_file.c:56) 
[ 30.622385][ C0] ? __pfx_v9fs_file_open (fs/9p/vfs_file.c:41) 
[ 30.622634][ C0] ? do_dentry_open (fs/open.c:912) 
[ 30.622880][ C0] do_dentry_open (fs/open.c:955) 
[ 30.623123][ C0] ? __pfx_v9fs_file_open (fs/9p/vfs_file.c:41) 
[ 30.623365][ C0] ? backing_file_open (fs/backing-file.c:44) 
[ 30.623617][ C0] backing_file_open (fs/backing-file.c:45) 
[ 30.624067][ C0] ovl_open_realfile (fs/overlayfs/file.c:54) 
[ 30.624340][ C0] ovl_open (fs/overlayfs/file.c:169) 
[ 30.624545][ C0] ? __pfx_ovl_open (fs/overlayfs/file.c:146) 
[ 30.624821][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 30.625273][ C0] ? do_dentry_open (fs/open.c:912) 
[ 30.625550][ C0] do_dentry_open (fs/open.c:955) 
[ 30.625817][ C0] ? __pfx_ovl_open (fs/overlayfs/file.c:146) 
[ 30.626087][ C0] ? may_open (fs/namei.c:3270) 
[ 30.626295][ C0] do_open (fs/namei.c:3643) 
[ 30.626695][ C0] path_openat (fs/namei.c:3799) 
[ 30.626966][ C0] ? __pfx_path_openat (fs/namei.c:3781) 
[ 30.627238][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 30.627519][ C0] do_filp_open (fs/namei.c:3826) 
[ 30.627792][ C0] ? __pfx_do_filp_open (fs/namei.c:3820) 
[ 30.628064][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 30.628335][ C0] ? __pfx_kfree_link (fs/libfs.c:1573) 
[ 30.628632][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 30.628910][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 30.629123][ C0] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 30.629398][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 30.629612][ C0] do_sys_openat2 (fs/open.c:1406) 
[ 30.629894][ C0] ? vfs_fstatat (fs/stat.c:308) 
[ 30.630342][ C0] ? __pfx_do_sys_openat2 (fs/open.c:1392) 
[ 30.630613][ C0] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 30.630887][ C0] __x64_sys_openat (fs/open.c:1432) 
[ 30.631160][ C0] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 30.631626][ C0] ? __pfx_do_faccessat (fs/open.c:465) 
[ 30.631903][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 30.632175][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   30.632518][    C0] RIP: 0033:0x7f16dd4080e8
[ 30.632791][ C0] Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7
All code
========
   0:	f9                   	stc
   1:	41 89 f0             	mov    %esi,%r8d
   4:	41 83 e2 40          	and    $0x40,%r10d
   8:	75 30                	jne    0x3a
   a:	89 f0                	mov    %esi,%eax
   c:	25 00 00 41 00       	and    $0x410000,%eax
  11:	3d 00 00 41 00       	cmp    $0x410000,%eax
  16:	74 22                	je     0x3a
  18:	44 89 c2             	mov    %r8d,%edx
  1b:	4c 89 ce             	mov    %r9,%rsi
  1e:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  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:	77 30                	ja     0x62
  32:	c3                   	ret
  33:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3a:	48 8d 44 24 08       	lea    0x8(%rsp),%rax
  3f:	c7                   	.byte 0xc7

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 30                	ja     0x38
   8:	c3                   	ret
   9:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  10:	48 8d 44 24 08       	lea    0x8(%rsp),%rax
  15:	c7                   	.byte 0xc7
[   30.633675][    C0] RSP: 002b:00007ffec79e6388 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
[   30.634047][    C0] RAX: ffffffffffffffda RBX: 00007ffec79e661f RCX: 00007f16dd4080e8
[   30.634416][    C0] RDX: 0000000000080000 RSI: 00007ffec79e6400 RDI: 00000000ffffff9c
[   30.634783][    C0] RBP: 00007ffec79e63f0 R08: 0000000000080000 R09: 00007ffec79e6400
[   30.635311][    C0] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffec79e6407


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage