======================================
| [   72.343100][    C2]  #0: ff1100000dd46608 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu (mm/mmap_lock.c:310)
| [   72.343410][    C2]  #1: ffffffff89177c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   72.343641][    C2]
| [   72.343641][    C2] stack backtrace:
[   72.343804][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.343806][    C2] Call Trace:
[   72.343808][    C2]  <IRQ>
[   72.343810][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   72.343816][    C2]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   72.343819][    C2]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   72.343824][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   72.343827][    C2]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   72.343830][    C2]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   72.343833][    C2]  ? save_trace (kernel/locking/lockdep.c:589)
[   72.343837][    C2]  mark_lock (kernel/locking/lockdep.c:4753)
[   72.343840][    C2]  mark_usage (kernel/locking/lockdep.c:4642)
[   72.343842][    C2]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   72.343844][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   72.343846][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   72.343851][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   72.343853][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   72.343857][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   72.343860][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   72.343863][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   72.343866][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   72.343868][    C2] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   72.343871][    C2]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   72.343874][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   72.343877][    C2]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   72.343881][    C2]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   72.343884][    C2]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   72.343887][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   72.343889][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   72.343891][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   72.343895][    C2]  rcu_core (kernel/rcu/tree.c:2869)
[   72.343898][    C2]  handle_softirqs (kernel/softirq.c:622)
[   72.343900][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   72.343904][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   72.343906][    C2]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   72.343910][    C2]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   72.343912][    C2]  irq_exit_rcu (kernel/softirq.c:752)
[   72.343914][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   72.343917][    C2]  </IRQ>
[   72.343918][    C2]  <TASK>
[   72.343920][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   72.343923][    C2] RIP: 0010:copy_mc_enhanced_fast_string (arch/x86/lib/copy_mc_64.S:128)
[   72.343927][    C2] Code: 07 48 ff c6 48 ff c7 ff c9 75 f2 31 c0 c3 c1 e1 03 01 d1 89 c8 eb f6 c1 e1 03 01 d1 89 ca e9 b1 fe ff ff 90 48 89 f8 48 89 d1 <f3> a4 31 c0 c3 48 89 c8 c3 90 f3 0f 1e fa 66 90 b9 00 02 00 00 f3
All code
========
   0:	07                   	(bad)
   1:	48 ff c6             	inc    %rsi
   4:	48 ff c7             	inc    %rdi
   7:	ff c9                	dec    %ecx
   9:	75 f2                	jne    0xfffffffffffffffd
   b:	31 c0                	xor    %eax,%eax
   d:	c3                   	ret
   e:	c1 e1 03             	shl    $0x3,%ecx
  11:	01 d1                	add    %edx,%ecx
  13:	89 c8                	mov    %ecx,%eax
  15:	eb f6                	jmp    0xd
  17:	c1 e1 03             	shl    $0x3,%ecx
  1a:	01 d1                	add    %edx,%ecx
  1c:	89 ca                	mov    %ecx,%edx
  1e:	e9 b1 fe ff ff       	jmp    0xfffffffffffffed4
  23:	90                   	nop
  24:	48 89 f8             	mov    %rdi,%rax
  27:	48 89 d1             	mov    %rdx,%rcx
  2a:*	f3 a4                	rep movsb (%rsi),(%rdi)		<-- trapping instruction
  2c:	31 c0                	xor    %eax,%eax
  2e:	c3                   	ret
  2f:	48 89 c8             	mov    %rcx,%rax
  32:	c3                   	ret
  33:	90                   	nop
  34:	f3 0f 1e fa          	endbr64
  38:	66 90                	xchg   %ax,%ax
  3a:	b9 00 02 00 00       	mov    $0x200,%ecx
  3f:	f3                   	repz

Code starting with the faulting instruction
===========================================
   0:	f3 a4                	rep movsb (%rsi),(%rdi)
   2:	31 c0                	xor    %eax,%eax
   4:	c3                   	ret
   5:	48 89 c8             	mov    %rcx,%rax
   8:	c3                   	ret
   9:	90                   	nop
   a:	f3 0f 1e fa          	endbr64
   e:	66 90                	xchg   %ax,%ax
  10:	b9 00 02 00 00       	mov    $0x200,%ecx
  15:	f3                   	repz
[   72.343930][    C2] RSP: 0000:ffa0000001837bc0 EFLAGS: 00000296
[   72.343933][    C2] RAX: ff11000012fb8000 RBX: ffd40000004bee00 RCX: 0000000000001000
[   72.343935][    C2] RDX: 0000000000001000 RSI: ff1100000d68d000 RDI: ff11000012fb8000
[   72.343937][    C2] RBP: ffd400000035a340 R08: ffffffff882521ad R09: 0000000000000000
[   72.343938][    C2] R10: ffe21c0001ad1c00 R11: 0000000000000000 R12: ff1100000dd46580
[   72.343940][    C2] R13: ffd400000035a340 R14: ffa0000001837d88 R15: ffa0000001837dc8
[   72.343942][    C2]  ? copy_mc_to_kernel (./include/linux/instrumented.h:180 arch/x86/lib/copy_mc.c:74)
[   72.343946][    C2]  __wp_page_copy_user (./include/linux/highmem.h:442 mm/memory.c:3566)
[   72.343949][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   72.343952][    C2]  wp_page_copy (mm/memory.c:3882)
[   72.343955][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   72.343958][    C2]  ? __vmf_anon_prepare (mm/memory.c:3826)
[   72.343961][    C2]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   72.343964][    C2]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[   72.343966][    C2]  ? do_wp_page (./include/linux/pgtable.h:117 mm/memory.c:4331)
[   72.343969][    C2]  __handle_mm_fault (mm/memory.c:6443 mm/memory.c:6565)
[   72.343972][    C2]  ? __pmd_alloc (./include/linux/mm.h:1682)
[   72.343974][    C2]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   72.343977][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5574)
[   72.343983][    C2]  handle_mm_fault (mm/memory.c:6734)
[   72.343985][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   72.343989][    C2]  do_user_addr_fault (arch/x86/mm/fault.c:1334)
[   72.343994][    C2]  ? irqentry_enter (./include/linux/irq-entry-common.h:108 ./include/linux/irq-entry-common.h:293 kernel/entry/common.c:113)
[   72.343996][    C2]  exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   72.343999][    C2]  asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:618)
[   72.344001][    C2] RIP: 0033:0x7fd9563eb340
[   72.344004][    C2] Code: be b9 13 00 e8 51 f8 ff ff 90 48 39 4f 08 0f 84 d6 00 00 00 55 48 89 d0 48 89 fa 48 89 e5 48 83 ec 20 42 f6 44 01 08 01 74 50 <48> 83 61 08 fe 48 3d ff 03 00 00 76 73 48 8b 7a 18 4c 8d 42 08 4c
All code
========
   0:	be b9 13 00 e8       	mov    $0xe80013b9,%esi
   5:	51                   	push   %rcx
   6:	f8                   	clc
   7:	ff                   	(bad)
   8:	ff 90 48 39 4f 08    	call   *0x84f3948(%rax)
   e:	0f 84 d6 00 00 00    	je     0xea
  14:	55                   	push   %rbp
  15:	48 89 d0             	mov    %rdx,%rax
  18:	48 89 fa             	mov    %rdi,%rdx
  1b:	48 89 e5             	mov    %rsp,%rbp
  1e:	48 83 ec 20          	sub    $0x20,%rsp
  22:	42 f6 44 01 08 01    	testb  $0x1,0x8(%rcx,%r8,1)
  28:	74 50                	je     0x7a
  2a:*	48 83 61 08 fe       	andq   $0xfffffffffffffffe,0x8(%rcx)		<-- trapping instruction
  2f:	48 3d ff 03 00 00    	cmp    $0x3ff,%rax
  35:	76 73                	jbe    0xaa
  37:	48 8b 7a 18          	mov    0x18(%rdx),%rdi
  3b:	4c 8d 42 08          	lea    0x8(%rdx),%r8
  3f:	4c                   	rex.WR

Code starting with the faulting instruction
===========================================
   0:	48 83 61 08 fe       	andq   $0xfffffffffffffffe,0x8(%rcx)
   5:	48 3d ff 03 00 00    	cmp    $0x3ff,%rax
   b:	76 73                	jbe    0x80
   d:	48 8b 7a 18          	mov    0x18(%rdx),%rdi
  11:	4c 8d 42 08          	lea    0x8(%rdx),%r8
  15:	4c                   	rex.WR
[   72.344006][    C2] RSP: 002b:00007ffc589af650 EFLAGS: 00010202
[   72.344008][    C2] RAX: 0000000000000020 RBX: 000055e035408040 RCX: 000055e035408060
[   72.344010][    C2] RDX: 00007fd95655cac0 RSI: 000055e035408040 RDI: 00007fd95655cac0
[   72.344011][    C2] RBP: 00007ffc589af670 R08: 0000000000000020 R09: 0000000000000020
[   72.344012][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000020


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock