======================================
| [ 60.946634][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   60.946900][    C2]
| [   60.946972][    C2]
| [   60.946972][    C2] stack backtrace:
[   60.947366][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   60.947777][    C2] Call Trace:
[   60.947892][    C2]  <IRQ>
[ 60.947966][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 60.948113][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 60.948292][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 60.948439][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 60.948621][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 60.948765][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 60.948997][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 60.949142][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 60.949307][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 60.949452][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 60.949685][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 60.949834][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 60.949979][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 60.950089][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 60.950199][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 60.950433][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 60.950543][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 60.950686][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 60.950832][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 60.951062][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) 
[ 60.951244][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 60.951388][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 60.951532][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 60.951761][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 60.951904][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 60.952048][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 60.952193][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 60.952337][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 60.952569][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 60.952714][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 60.952858][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 60.953003][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 60.953234][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 60.953403][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 60.953546][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 60.953690][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 60.954022][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 60.954168][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 60.954316][ 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) 
[ 60.954460][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 60.954692][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 60.954836][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 60.954980][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 60.955124][ 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) 
[ 60.955269][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 60.955500][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 60.955643][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 60.955787][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 60.955930][ C2] __do_softirq (kernel/softirq.c:554) 
[ 60.956163][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 60.956271][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   60.956417][    C2]  </IRQ>
[   60.956492][    C2]  <TASK>
[ 60.956565][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 60.956832][ C2] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 60.957016][ C2] Code: ff 48 83 c4 28 65 0f c1 05 54 17 b3 70 83 f8 01 0f 85 b5 01 00 00 9c 58 f6 c4 02 0f 85 be 01 00 00 48 85 ed 0f 85 9b 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
All code
========
   0:	ff 48 83             	decl   -0x7d(%rax)
   3:	c4                   	(bad)
   4:	28 65 0f             	sub    %ah,0xf(%rbp)
   7:	c1 05 54 17 b3 70 83 	roll   $0x83,0x70b31754(%rip)        # 0x70b31762
   e:	f8                   	clc
   f:	01 0f                	add    %ecx,(%rdi)
  11:	85 b5 01 00 00 9c    	test   %esi,-0x63ffffff(%rbp)
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	0f 85 be 01 00 00    	jne    0x1df
  21:	48 85 ed             	test   %rbp,%rbp
  24:	0f 85 9b 01 00 00    	jne    0x1c5
  2a:*	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax		<-- trapping instruction
  31:	fc ff df 
  34:	48 01 c3             	add    %rax,%rbx
  37:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  3e:	48                   	rex.W
  3f:	c7                   	.byte 0xc7

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	48 01 c3             	add    %rax,%rbx
   d:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  14:	48                   	rex.W
  15:	c7                   	.byte 0xc7
[   60.957640][    C2] RSP: 0018:ffffc9000160f550 EFLAGS: 00000206
[   60.957826][    C2] RAX: 0000000000000046 RBX: 1ffff920002c1ead RCX: 0000000000000001
[   60.958043][    C2] RDX: 1ffff110011019fd RSI: ffff88800880cff0 RDI: ffff88800880d012
[   60.958260][    C2] RBP: 0000000000000200 R08: 0000000000000000 R09: ffff88800880cff0
[   60.958476][    C2] R10: 1ffff920002c1e7f R11: 0000000000000000 R12: ffffffff92e31da0
[   60.958690][    C2] R13: ffffc9000160f6b8 R14: ffff8880043ced38 R15: ffffed1000879da5
[ 60.959000][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 60.959147][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 60.959291][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 60.959438][ C2] ? schedule (kernel/sched/core.c:6779 kernel/sched/core.c:6837) 
[ 60.959639][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 60.959783][ C2] ? schedule (kernel/sched/core.c:6779 kernel/sched/core.c:6837) 
[ 60.959892][ C2] schedule (kernel/sched/core.c:6781 kernel/sched/core.c:6837) 
[ 60.960001][ C2] ? schedule (kernel/sched/core.c:6779 kernel/sched/core.c:6837) 
[ 60.960109][ C2] p9_client_rpc (net/9p/client.c:713 (discriminator 13)) 
[ 60.960254][ C2] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 60.960401][ C2] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 60.960581][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 60.960725][ C2] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) 
[ 60.960956][ C2] ? __pfx_make_vfsgid (fs/mnt_idmapping.c:110) 
[ 60.961100][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 60.961245][ C2] ? v9fs_fid_add (fs/9p/fid.c:41) 
[ 60.961411][ C2] p9_client_readlink (net/9p/client.c:2238) 
[ 60.961643][ C2] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 60.961789][ C2] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) 
[ 60.961968][ C2] ? __lookup_slow (fs/namei.c:1692) 
[ 60.962111][ C2] pick_link (fs/namei.c:1808) 
[ 60.962219][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 60.962366][ C2] step_into (fs/namei.c:1874) 
[ 60.962474][ C2] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2749 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3317 kernel/locking/rwsem.c:1347) 
[ 60.962617][ C2] ? __pfx_step_into (fs/namei.c:1839) 
[ 60.962762][ C2] ? walk_component (fs/namei.c:2005) 
[ 60.962997][ C2] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) 
[ 60.963178][ C2] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) 
[ 60.963357][ C2] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 60.963499][ 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) 
[ 60.963729][ C2] path_lookupat (fs/namei.c:2254 (discriminator 2) fs/namei.c:2484 (discriminator 2)) 
[ 60.963877][ C2] filename_lookup (fs/namei.c:2514) 
[ 60.964022][ C2] ? __pfx_filename_lookup (fs/namei.c:2508) 
[ 60.964168][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 60.964400][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 60.964549][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 60.964692][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 60.964835][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 60.965154][ C2] vfs_statx (fs/stat.c:244) 
[ 60.965276][ C2] ? __pfx_vfs_statx (fs/stat.c:234) 
[ 60.965427][ 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) 
[ 60.965574][ C2] vfs_fstatat (fs/stat.c:305) 
[ 60.965682][ C2] __do_sys_newfstatat (fs/stat.c:469) 
[ 60.965914][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 60.966061][ C2] ? __x64_sys_openat (fs/open.c:1432) 
[ 60.966204][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 60.966346][ C2] ? __pfx_do_faccessat (fs/open.c:465) 
[ 60.966584][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 60.966764][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 60.966907][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   60.967085][    C2] RIP: 0033:0x7f5c34809eae
[ 60.967236][ 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
[   60.967741][    C2] RSP: 002b:00007ffe43fce138 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   60.968046][    C2] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f5c34809eae
[   60.968260][    C2] RDX: 00007ffe43fce210 RSI: 00007ffe43fce140 RDI: 00000000ffffff9c
[   60.968568][    C2] RBP: 00007ffe43fce2d0 R08: 00000000ffffffff R09: 00007ffe43fce140
[   60.968783][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe43fce147


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage