======================================
| [ 47.463569][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   47.463849][    C2]
| [   47.463923][    C2]
| [   47.463923][    C2] stack backtrace:
[   47.464327][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   47.464745][    C2] Call Trace:
[   47.464857][    C2]  <IRQ>
[ 47.464934][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 47.465273][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 47.465458][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 47.465641][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 47.465790][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 47.466029][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 47.466179][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 47.466327][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 47.466475][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 47.466728][ C2] ? add_chain_cache (kernel/locking/lockdep.c:3730) 
[ 47.466877][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 47.467026][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 47.467137][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 47.467250][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 47.467499][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 47.467652][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 47.467910][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 47.468058][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 47.468374][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 47.468522][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 47.468670][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 47.468889][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 47.469126][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 47.469347][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 47.469499][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 47.469808][ C2] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 47.470030][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 47.470284][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 47.470430][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 47.470673][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 47.470820][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 47.470972][ 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) 
[ 47.471120][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 47.471271][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 47.471419][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 47.471676][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 47.471826][ 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) 
[ 47.472077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 47.472225][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 47.472372][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 47.472523][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 47.472763][ C2] __do_softirq (kernel/softirq.c:554) 
[ 47.472912][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 47.473024][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   47.473171][    C2]  </IRQ>
[   47.473248][    C2]  <TASK>
[ 47.473323][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 47.473597][ C2] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 47.473786][ C2] Code: ff 48 83 c4 28 65 0f c1 05 84 34 93 68 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 84 34 93 68 83 	roll   $0x83,0x68933484(%rip)        # 0x68933492
   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
[   47.474408][    C2] RSP: 0018:ffffc9000058f618 EFLAGS: 00000206
[   47.474595][    C2] RAX: 0000000000000046 RBX: 1ffff920000b1ec6 RCX: 0000000000000001
[   47.474911][    C2] RDX: 1ffff11000b609fd RSI: 0000000000000008 RDI: ffff888005b05062
[   47.475134][    C2] RBP: 0000000000000200 R08: ffffffff9cf061c8 R09: ffff888005b05040
[   47.475354][    C2] R10: ffffffff9cf1c537 R11: ffffc9000058f489 R12: ffffffff9b121160
[   47.475676][    C2] R13: 0000000000092cc0 R14: 00000000000000f0 R15: ffffffff97da73e9
[ 47.475896][ C2] ? __alloc_object (mm/kmemleak.c:466 mm/kmemleak.c:645) 
[ 47.476049][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 47.476212][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 47.476363][ C2] ? mas_preallocate (lib/maple_tree.c:5557) 
[ 47.476510][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 47.476658][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 47.476808][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 47.477139][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 47.477287][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 47.477434][ C2] fs_reclaim_acquire (mm/page_alloc.c:3716 mm/page_alloc.c:3706) 
[ 47.477580][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 47.477821][ C2] kmem_cache_alloc (./include/linux/sched/mm.h:313 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) 
[ 47.477971][ C2] __alloc_object (mm/kmemleak.c:466 mm/kmemleak.c:645) 
[ 47.478120][ C2] __create_object (mm/kmemleak.c:750) 
[ 47.478270][ C2] kmem_cache_alloc (./include/linux/kmemleak.h:42 mm/slub.c:3802 mm/slub.c:3845 mm/slub.c:3852) 
[ 47.478418][ C2] ? __lock_release (kernel/locking/lockdep.c:5406) 
[ 47.478658][ C2] mas_alloc_nodes (lib/maple_tree.c:1243) 
[ 47.478805][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 47.478917][ C2] mas_preallocate (lib/maple_tree.c:5557) 
[ 47.479064][ C2] ? __pfx_mas_preallocate (lib/maple_tree.c:5500) 
[ 47.479214][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 47.479398][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 47.479546][ C2] __split_vma (mm/mmap.c:2352) 
[ 47.479694][ C2] ? __pfx___split_vma (mm/mmap.c:2325) 
[ 47.479935][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5134 (discriminator 9)) 
[ 47.480083][ C2] do_vmi_align_munmap.constprop.0 (mm/mmap.c:2550) 
[ 47.480267][ C2] ? __pfx_do_vmi_align_munmap.constprop.0 (mm/mmap.c:2505) 
[ 47.480456][ C2] ? mtree_range_walk (lib/maple_tree.c:788 lib/maple_tree.c:2792) 
[ 47.480702][ C2] ? mas_walk (lib/maple_tree.c:3678 lib/maple_tree.c:4909) 
[ 47.480816][ C2] ? mas_find (lib/maple_tree.c:6025 lib/maple_tree.c:6064) 
[ 47.480929][ C2] mmap_region (mm/mmap.c:2747) 
[ 47.481077][ C2] ? __pfx_arch_get_unmapped_area_topdown (arch/x86/kernel/sys_x86_64.c:157) 
[ 47.481262][ C2] ? __pfx_mmap_region (mm/mmap.c:2718) 
[ 47.481411][ C2] ? get_unmapped_area (mm/mmap.c:1854) 
[ 47.481560][ C2] do_mmap (mm/mmap.c:1385) 
[ 47.481673][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 47.481819][ C2] ? __fget_files (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 fs/file.c:1037) 
[ 47.482070][ C2] vm_mmap_pgoff (mm/util.c:573) 
[ 47.482220][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:563) 
[ 47.482367][ C2] ? __fget_files (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 fs/file.c:1037) 
[ 47.482514][ C2] ? __fget_files (fs/file.c:1040) 
[ 47.482754][ C2] ksys_mmap_pgoff (mm/mmap.c:1431) 
[ 47.482903][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 47.483051][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   47.483238][    C2] RIP: 0033:0x7f386a76d287
[ 47.483488][ C2] Code: c3 66 90 48 89 2b 48 c7 43 08 00 04 00 00 5b 5d 41 5c c3 f3 0f 1e fa 41 89 ca 41 f7 c1 ff 0f 00 00 75 10 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 19 c3 c7 05 46 ef 00 00 16 00 00 00 48 c7 c0
All code
========
   0:	c3                   	ret
   1:	66 90                	xchg   %ax,%ax
   3:	48 89 2b             	mov    %rbp,(%rbx)
   6:	48 c7 43 08 00 04 00 	movq   $0x400,0x8(%rbx)
   d:	00 
   e:	5b                   	pop    %rbx
   f:	5d                   	pop    %rbp
  10:	41 5c                	pop    %r12
  12:	c3                   	ret
  13:	f3 0f 1e fa          	endbr64
  17:	41 89 ca             	mov    %ecx,%r10d
  1a:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
  21:	75 10                	jne    0x33
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 19                	ja     0x4b
  32:	c3                   	ret
  33:	c7 05 46 ef 00 00 16 	movl   $0x16,0xef46(%rip)        # 0xef83
  3a:	00 00 00 
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	c0                   	.byte 0xc0

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 19                	ja     0x21
   8:	c3                   	ret
   9:	c7 05 46 ef 00 00 16 	movl   $0x16,0xef46(%rip)        # 0xef59
  10:	00 00 00 
  13:	48                   	rex.W
  14:	c7                   	.byte 0xc7
  15:	c0                   	.byte 0xc0
[   47.484009][    C2] RSP: 002b:00007ffee54b6598 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   47.484332][    C2] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f386a76d287
[   47.484554][    C2] RDX: 0000000000000005 RSI: 0000000000004000 RDI: 00007f386a6e2000
[   47.484772][    C2] RBP: 00007ffee54b6900 R08: 0000000000000005 R09: 0000000000002000
[   47.485084][    C2] R10: 0000000000000812 R11: 0000000000000246 R12: 00007ffee54b65d0


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage