======================================
| [ 31.060073][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   31.060267][    C2]
| [   31.060431][    C2]
| [   31.060431][    C2] stack backtrace:
[   31.060855][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   31.061286][    C2] Call Trace:
[   31.061411][    C2]  <IRQ>
[ 31.061494][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 31.061653][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 31.061934][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 31.062094][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 31.062290][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 31.062444][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 31.062694][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 31.062855][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 31.063016][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 31.063175][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 31.063422][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 31.063583][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 31.063702][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 31.063859][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 31.063978][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 31.064312][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 31.064472][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 31.064629][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 31.064785][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 31.065029][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 31.065186][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 31.065342][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 31.065498][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 31.065654][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 31.065896][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 31.066054][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 31.066209][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 31.066366][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 31.066610][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 31.066766][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 31.066921][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 31.067078][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 31.067323][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 31.067481][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 31.067639][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 31.067798][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 31.068042][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 31.068205][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 31.068328][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 31.068486][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 31.068644][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 31.068888][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 31.069049][ 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) 
[ 31.069207][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 31.069364][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 31.069608][ C2] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 31.069768][ C2] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 31.069931][ C2] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:127 kernel/time/timer_migration.c:925) 
[ 31.070091][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) 
[ 31.070377][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) 
[ 31.070545][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) 
[ 31.070701][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) 
[ 31.070858][ C2] __do_softirq (kernel/softirq.c:554) 
[ 31.071104][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 31.071221][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   31.071376][    C2]  </IRQ>
[   31.071456][    C2]  <TASK>
[ 31.071534][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 31.071730][ C2] RIP: 0010:unwind_next_frame (arch/x86/kernel/unwind_orc.c:664) 
[ 31.072023][ C2] Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 cd 06 00 00 49 89 6d 50 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e b2 06 00 00 41 3b 5d 00 0f 84
All code
========
   0:	00 fc                	add    %bh,%ah
   2:	ff                   	(bad)
   3:	df 48 89             	fisttps -0x77(%rax)
   6:	fa                   	cli
   7:	48 c1 ea 03          	shr    $0x3,%rdx
   b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   f:	0f 85 cd 06 00 00    	jne    0x6e2
  15:	49 89 6d 50          	mov    %rbp,0x50(%r13)
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	4c 89 ea             	mov    %r13,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax		<-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 08                	je     0x3a
  32:	3c 03                	cmp    $0x3,%al
  34:	0f 8e b2 06 00 00    	jle    0x6ec
  3a:	41 3b 5d 00          	cmp    0x0(%r13),%ebx
  3e:	0f                   	.byte 0xf
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
   4:	84 c0                	test   %al,%al
   6:	74 08                	je     0x10
   8:	3c 03                	cmp    $0x3,%al
   a:	0f 8e b2 06 00 00    	jle    0x6c2
  10:	41 3b 5d 00          	cmp    0x0(%r13),%ebx
  14:	0f                   	.byte 0xf
  15:	84                   	.byte 0x84
[   31.072685][    C2] RSP: 0018:ffffc90000f0f938 EFLAGS: 00000a02
[   31.072886][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90000f10000
[   31.073123][    C2] RDX: 1ffff920001e1f51 RSI: 0000000000000001 RDI: ffffc90000f0fad8
[   31.073444][    C2] RBP: ffffc90000f0fd10 R08: ffffc90000f0fac8 R09: 1ffff920001e1f30
[   31.073688][    C2] R10: ffffc90000f0fa88 R11: ffffc90000f0fac9 R12: 1ffff920001e1f30
[   31.073921][    C2] R13: ffffc90000f0fa88 R14: ffffffff92733466 R15: ffffc90000f0fb28
[ 31.074247][ C2] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:406 arch/x86/kernel/unwind_orc.c:648) 
[ 31.074406][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 31.074562][ C2] ? is_bpf_text_address (kernel/bpf/core.c:772) 
[ 31.074723][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 31.074966][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 31.075122][ 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) 
[ 31.075276][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 31.075392][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 31.075546][ C2] ? get_stack_info_noinstr (arch/x86/kernel/dumpstack_64.c:173) 
[ 31.075794][ C2] __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:757) 
[ 31.075949][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 31.076141][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 31.076297][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 31.076628][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 31.076782][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 31.076940][ C2] set_track_prepare (mm/slub.c:886) 
[ 31.077095][ C2] ? get_partial_node.part.0 (mm/slub.c:2623) 
[ 31.077341][ C2] ___slab_alloc (mm/slub.c:917 mm/slub.c:3515) 
[ 31.077497][ C2] ? kmem_cache_alloc (./include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) 
[ 31.077653][ C2] ? getname_flags (fs/namei.c:139) 
[ 31.077811][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 31.078058][ C2] ? getname_flags (fs/namei.c:139) 
[ 31.078215][ C2] ? kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 31.078373][ C2] kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 31.078533][ C2] getname_flags (fs/namei.c:139) 
[ 31.078777][ C2] do_sys_openat2 (fs/open.c:1400) 
[ 31.078936][ C2] ? vfs_fstatat (fs/stat.c:308) 
[ 31.079093][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1392) 
[ 31.079250][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 31.079404][ C2] ? hrtimer_interrupt (kernel/time/hrtimer.c:1831) 
[ 31.079651][ C2] __x64_sys_openat (fs/open.c:1432) 
[ 31.079808][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 31.079974][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 31.080132][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   31.080419][    C2] RIP: 0033:0x7f32d9c0b0e8
[ 31.080581][ C2] 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
[   31.081224][    C2] RSP: 002b:00007ffe86664bf8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
[   31.081464][    C2] RAX: ffffffffffffffda RBX: 00007ffe86664e8f RCX: 00007f32d9c0b0e8
[   31.081702][    C2] RDX: 0000000000080000 RSI: 00007ffe86664c70 RDI: 00000000ffffff9c
[   31.082024][    C2] RBP: 00007ffe86664c60 R08: 0000000000080000 R09: 00007ffe86664c70
[   31.082256][    C2] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffe86664c77


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage