======================================
| [ 46.933826][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   46.934098][    C3]
| [   46.934172][    C3]
| [   46.934172][    C3] stack backtrace:
[   46.934580][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   46.935090][    C3] Call Trace:
[   46.935202][    C3]  <IRQ>
[ 46.935279][ C3] dump_stack_lvl (lib/dump_stack.c:117) 
[ 46.935435][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 46.935709][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 46.935893][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 46.936045][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 46.936193][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 46.936432][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 46.936583][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 46.936731][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 46.936882][ C3] ? add_chain_cache (kernel/locking/lockdep.c:3730) 
[ 46.937119][ C3] ? save_trace (kernel/locking/lockdep.c:586) 
[ 46.937270][ C3] mark_lock (kernel/locking/lockdep.c:4678) 
[ 46.937386][ C3] mark_usage (kernel/locking/lockdep.c:4567) 
[ 46.937500][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 46.937653][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 46.937891][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 46.938155][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 46.938304][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 46.938618][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 46.938767][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 46.938914][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 46.939135][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 46.939378][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 46.939620][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 46.939769][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 46.939991][ C3] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge
[ 46.940312][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 46.940568][ C3] call_timer_fn (kernel/time/timer.c:1793) 
[ 46.940717][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 46.940869][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 46.941114][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 46.941262][ C3] ? 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) 
[ 46.941427][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 46.941581][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 46.941729][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge
[ 46.941997][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 46.942150][ C3] ? 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) 
[ 46.942302][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 46.942551][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 46.942708][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 46.942858][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 46.943008][ C3] __do_softirq (kernel/softirq.c:554) 
[ 46.943246][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 46.943364][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   46.943523][    C3]  </IRQ>
[   46.943599][    C3]  <TASK>
[ 46.943674][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 46.943953][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 46.944156][ C3] Code: 10 e8 21 49 9b fd 48 89 ef e8 59 b9 9b fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 05 bf 4f 57 <74> 0e 5b 5d c3 cc cc cc cc e8 4f b3 be fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	21 49 9b             	and    %ecx,-0x65(%rcx)
   5:	fd                   	std
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 59 b9 9b fd       	call   0xfffffffffd9bb967
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 05 bf 4f 57 	decl   %gs:0x574fbf05(%rip)        # 0x574fbf2f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 4f b3 be fd       	call   0xfffffffffdbeb387
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 4f b3 be fd       	call   0xfffffffffdbeb35d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[   46.944691][    C3] RSP: 0018:ffffc900005bf670 EFLAGS: 00000282
[   46.944880][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff57a5eb4
[   46.945117][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa8b40911
[   46.945435][    C3] RBP: ffff88800104fe40 R08: 0000000000000001 R09: fffffbfff57a38aa
[   46.945661][    C3] R10: ffffffffabd1c557 R11: 0000000000000100 R12: ffff88800104fe40
[   46.945890][    C3] R13: ffffea000017d300 R14: ffff888001050ac0 R15: ffff888005f4d000
[ 46.946208][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 46.946407][ C3] get_partial_node.part.0 (mm/slub.c:2623) 
[ 46.946557][ C3] ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 46.946883][ C3] ? kmem_cache_alloc (./include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) 
[ 46.947030][ C3] ? mas_alloc_nodes (lib/maple_tree.c:1243) 
[ 46.947177][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 46.947329][ C3] ? mas_alloc_nodes (lib/maple_tree.c:1243) 
[ 46.947478][ C3] ? kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 46.947719][ C3] kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 46.947877][ C3] ? __lock_release (kernel/locking/lockdep.c:5406) 
[ 46.948029][ C3] mas_alloc_nodes (lib/maple_tree.c:1243) 
[ 46.948177][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 46.948392][ C3] mas_preallocate (lib/maple_tree.c:5557) 
[ 46.948544][ C3] ? __pfx_mas_preallocate (lib/maple_tree.c:5500) 
[ 46.948690][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 46.948876][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 46.949112][ C3] __split_vma (mm/mmap.c:2352) 
[ 46.949265][ C3] ? 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) 
[ 46.949412][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 46.949525][ C3] ? __pfx___split_vma (mm/mmap.c:2325) 
[ 46.949673][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 46.949909][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5134 (discriminator 9)) 
[ 46.950059][ C3] do_vmi_align_munmap.constprop.0 (mm/mmap.c:2537) 
[ 46.950242][ C3] ? vma_link_file (./include/linux/mm.h:965 mm/mmap.c:387 mm/mmap.c:403) 
[ 46.950397][ C3] ? __pfx_do_vmi_align_munmap.constprop.0 (mm/mmap.c:2505) 
[ 46.950668][ C3] ? mtree_range_walk (lib/maple_tree.c:788 lib/maple_tree.c:2792) 
[ 46.950823][ C3] ? mas_walk (lib/maple_tree.c:3678 lib/maple_tree.c:4909) 
[ 46.950935][ C3] ? mas_find (lib/maple_tree.c:6025 lib/maple_tree.c:6064) 
[ 46.951047][ C3] mmap_region (mm/mmap.c:2747) 
[ 46.951292][ C3] ? __pfx_arch_get_unmapped_area_topdown (arch/x86/kernel/sys_x86_64.c:157) 
[ 46.951478][ C3] ? __pfx_mmap_region (mm/mmap.c:2718) 
[ 46.951627][ C3] ? get_unmapped_area (mm/mmap.c:1854) 
[ 46.951774][ C3] do_mmap (mm/mmap.c:1385) 
[ 46.951979][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 46.952129][ C3] ? __fget_files (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 fs/file.c:1037) 
[ 46.952277][ C3] vm_mmap_pgoff (mm/util.c:573) 
[ 46.952430][ C3] ? __pfx_vm_mmap_pgoff (mm/util.c:563) 
[ 46.952578][ C3] ? __fget_files (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 fs/file.c:1037) 
[ 46.952725][ C3] ? __fget_files (fs/file.c:1040) 
[ 46.952873][ C3] ksys_mmap_pgoff (mm/mmap.c:1431) 
[ 46.953022][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 46.953172][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   46.953460][    C3] RIP: 0033:0x7f196648b287
[ 46.953620][ C3] 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
[   46.954241][    C3] RSP: 002b:00007ffecf486cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   46.954471][    C3] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f196648b287
[   46.954695][    C3] RDX: 0000000000000005 RSI: 0000000000009000 RDI: 00007f1966442000
[   46.955007][    C3] RBP: 00007ffecf487020 R08: 0000000000000005 R09: 0000000000003000
[   46.955229][    C3] R10: 0000000000000812 R11: 0000000000000246 R12: 00007ffecf486cf0


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage