======================================
| [ 43.909438][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   43.909744][    C2]
| [   43.909841][    C2]
| [   43.909841][    C2] stack backtrace:
[   43.910297][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   43.910791][    C2] Call Trace:
[   43.910920][    C2]  <IRQ>
[ 43.911008][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 43.911179][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 43.911488][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 43.911657][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 43.911875][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 43.912043][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 43.912313][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 43.912482][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 43.912651][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 43.912819][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 43.913087][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 43.913255][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 43.913380][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 43.913552][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 43.913677][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 43.913943][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 43.914110][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.914277][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 43.914444][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.914733][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 43.914898][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 43.915069][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.915236][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.915501][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.915667][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 43.915834][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.915998][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 43.916163][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 43.916328][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.916492][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.916663][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.916837][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.917102][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.917267][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 43.917431][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.917596][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 43.917863][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 43.918026][ 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) 
[ 43.918191][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 43.918364][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 43.918638][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 43.918812][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 43.918981][ 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) 
[ 43.919150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 43.919315][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 43.919583][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 43.919749][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 43.919919][ C2] __do_softirq (kernel/softirq.c:554) 
[ 43.920081][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 43.920206][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   43.920368][    C2]  </IRQ>
[   43.920453][    C2]  <TASK>
[ 43.920536][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 43.920742][ C2] RIP: 0010:unwind_next_frame (./arch/x86/include/asm/stacktrace.h:59 arch/x86/kernel/unwind_orc.c:665) 
[ 43.921161][ C2] Code: 89 fa 48 c1 ea 03 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
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   a:	0f 85 d8 05 00 00    	jne    0x5e8
  10:	49 8b 45 10          	mov    0x10(%r13),%rax
  14:	48 39 dd             	cmp    %rbx,%rbp
  17:	0f 87 f6 fd ff ff    	ja     0xfffffffffffffe13
  1d:	48 39 d8             	cmp    %rbx,%rax
  20:	0f 86 ed fd ff ff    	jbe    0xfffffffffffffe13
  26:	48 8d 53 08          	lea    0x8(%rbx),%rdx
  2a:*	48 39 ea             	cmp    %rbp,%rdx		<-- trapping instruction
  2d:	0f 97 c1             	seta   %cl
  30:	48 39 c2             	cmp    %rax,%rdx
  33:	0f 96 c0             	setbe  %al
  36:	84 c1                	test   %al,%cl
  38:	0f 84 d5 fd ff ff    	je     0xfffffffffffffe13
  3e:	48                   	rex.W
  3f:	39                   	.byte 0x39

Code starting with the faulting instruction
===========================================
   0:	48 39 ea             	cmp    %rbp,%rdx
   3:	0f 97 c1             	seta   %cl
   6:	48 39 c2             	cmp    %rax,%rdx
   9:	0f 96 c0             	setbe  %al
   c:	84 c1                	test   %al,%cl
   e:	0f 84 d5 fd ff ff    	je     0xfffffffffffffde9
  14:	48                   	rex.W
  15:	39                   	.byte 0x39
[   43.921759][    C2] RSP: 0018:ffffc90000baf1a8 EFLAGS: 00000202
[   43.922065][    C2] RAX: ffffc90000bb0000 RBX: ffffc90000baf3e0 RCX: 1ffffffff681f601
[   43.922306][    C2] RDX: ffffc90000baf3e8 RSI: 0000000000000004 RDI: ffffc90000baf2b8
[   43.922566][    C2] RBP: ffffc90000ba8000 R08: ffffc90000baf2e8 R09: 1ffff92000175e3e
[   43.922914][    C2] R10: ffffc90000baf2a8 R11: ffffc90000baf2e9 R12: 1ffff92000175e3e
[   43.923160][    C2] R13: ffffc90000baf2a8 R14: ffffffffb40fb5de R15: ffffc90000baf3d8
[ 43.923509][ C2] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:643) 
[ 43.923673][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 43.923838][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 43.924002][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 43.924168][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 43.924332][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 43.924536][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 43.924701][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 43.924865][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 43.925123][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 43.925285][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 43.925448][ 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) 
[ 43.925613][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 43.925833][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 43.925995][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 43.926158][ C2] ? debug_object_active_state (lib/debugobjects.c:950) 
[ 43.926359][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 43.926637][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 43.926798][ C2] ? __virt_addr_valid (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:894 ./include/linux/mmzone.h:2029 arch/x86/mm/physaddr.c:65) 
[ 43.926960][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 43.927121][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 43.927389][ C2] ? __virt_addr_valid (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:894 ./include/linux/mmzone.h:2029 arch/x86/mm/physaddr.c:65) 
[ 43.927552][ C2] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 ./include/linux/mmzone.h:2029 arch/x86/mm/physaddr.c:65) 
[ 43.927712][ C2] ? __pfx_free_object_rcu (mm/kmemleak.c:508) 
[ 43.927876][ C2] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:507 mm/kasan/../slab.h:206 mm/kasan/common.c:38) 
[ 43.928042][ C2] __kasan_record_aux_stack (mm/kasan/generic.c:541) 
[ 43.928300][ C2] ? __pfx_free_object_rcu (mm/kmemleak.c:508) 
[ 43.928462][ C2] __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:103 kernel/rcu/tree.c:2735) 
[ 43.928671][ C2] kfree (./include/linux/kmemleak.h:48 mm/slub.c:2072 mm/slub.c:4280 mm/slub.c:4390) 
[ 43.928796][ C2] ? p9_client_walk (net/9p/client.c:1201) 
[ 43.929058][ C2] ? p9_req_put (net/9p/client.c:410) 
[ 43.929226][ C2] p9_client_walk (net/9p/client.c:1201) 
[ 43.929391][ C2] ? __pfx_p9_client_walk (net/9p/client.c:1143) 
[ 43.929555][ C2] ? 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) 
[ 43.929829][ C2] ? v9fs_fid_lookup_with_uid (fs/9p/fid.c:181) 
[ 43.929999][ C2] ? v9fs_vfs_lookup.part.0 (fs/9p/vfs_inode.c:676) 
[ 43.930172][ C2] v9fs_vfs_lookup.part.0 (fs/9p/vfs_inode.c:676) 
[ 43.930338][ C2] ? __pfx_v9fs_vfs_lookup.part.0 (fs/9p/vfs_inode.c:649) 
[ 43.930660][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4892) 
[ 43.930830][ C2] __lookup_slow (fs/namei.c:1692) 
[ 43.930994][ C2] ? __pfx___lookup_slow (fs/namei.c:1668) 
[ 43.931161][ C2] ? walk_component (fs/namei.c:1709 fs/namei.c:2004) 
[ 43.931425][ C2] walk_component (./include/linux/fs.h:808 fs/namei.c:1710 fs/namei.c:2004) 
[ 43.931590][ C2] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) 
[ 43.931814][ C2] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) 
[ 43.932019][ C2] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 43.932186][ 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) 
[ 43.932353][ C2] path_lookupat (fs/namei.c:2254 (discriminator 2) fs/namei.c:2484 (discriminator 2)) 
[ 43.932525][ C2] filename_lookup (fs/namei.c:2514) 
[ 43.932695][ C2] ? __pfx_filename_lookup (fs/namei.c:2508) 
[ 43.932963][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 43.933128][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 43.933300][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 43.933468][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 43.933633][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 43.933994][ C2] vfs_statx (fs/stat.c:244) 
[ 43.934121][ C2] ? __pfx_vfs_statx (fs/stat.c:234) 
[ 43.934286][ 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) 
[ 43.934451][ C2] vfs_fstatat (fs/stat.c:305) 
[ 43.934682][ C2] __do_sys_newfstatat (fs/stat.c:469) 
[ 43.934852][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 43.935025][ C2] ? __x64_sys_openat (fs/open.c:1432) 
[ 43.935192][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 43.935356][ C2] ? __pfx_do_faccessat (fs/open.c:465) 
[ 43.935625][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 43.935832][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 43.936000][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   43.936209][    C2] RIP: 0033:0x7f3813968eae
[ 43.936388][ 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 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
[   43.937079][    C2] RSP: 002b:00007ffd5a179de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   43.937329][    C2] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f3813968eae
[   43.937577][    C2] RDX: 00007ffd5a179ec0 RSI: 00007ffd5a179df0 RDI: 00000000ffffff9c
[   43.937933][    C2] RBP: 00007ffd5a179f80 R08: 00000000ffffffff R09: 00007ffd5a179df0
[   43.938177][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd5a179df7


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage