======================================
| [   22.725159][    C3]  #1: ff11000004d28378 (&mm->mmap_lock){++++}-{4:4}, at: __vmf_anon_prepare (./include/linux/mmap_lock.h:611 mm/memory.c:3826)
| [   22.725376][    C3]  #2: ffffffffbc177c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   22.725544][    C3]
| [   22.725544][    C3] stack backtrace:
[   22.725714][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.725716][    C3] Call Trace:
[   22.725718][    C3]  <IRQ>
[   22.725719][    C3]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.725724][    C3]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   22.725727][    C3]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   22.725730][    C3]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   22.725732][    C3]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   22.725734][    C3]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   22.725736][    C3]  ? save_trace (kernel/locking/lockdep.c:589)
[   22.725738][    C3]  ? phys_pte_init (./arch/x86/include/asm/pgtable.h:737 arch/x86/mm/init_64.c:508)
[   22.725741][    C3]  mark_lock (kernel/locking/lockdep.c:4753)
[   22.725743][    C3]  mark_usage (kernel/locking/lockdep.c:4642)
[   22.725744][    C3]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   22.725746][    C3]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   22.725747][    C3]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   22.725750][    C3]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   22.725751][    C3]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   22.725753][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   22.725755][    C3]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   22.725757][    C3]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   22.725759][    C3]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   22.725760][    C3] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   22.725762][    C3]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   22.725764][    C3]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   22.725766][    C3]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   22.725769][    C3]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   22.725771][    C3]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   22.725772][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   22.725774][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   22.725776][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   22.725778][    C3]  rcu_core (kernel/rcu/tree.c:2869)
[   22.725780][    C3]  handle_softirqs (kernel/softirq.c:622)
[   22.725781][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   22.725784][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   22.725786][    C3]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   22.725788][    C3]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   22.725789][    C3]  irq_exit_rcu (kernel/softirq.c:752)
[   22.725791][    C3]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   22.725793][    C3]  </IRQ>
[   22.725793][    C3]  <TASK>
[   22.725794][    C3]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   22.725796][    C3] RIP: 0010:lock_is_held_type (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./arch/x86/include/asm/irqflags.h:159 kernel/locking/lockdep.c:5942)
[   22.725799][    C3] Code: ff ff ff 65 0f c1 15 22 ce 00 02 83 fa 01 8b 44 24 04 75 55 9c 5a 80 e6 02 75 6f 41 f7 c6 00 02 00 00 74 2c fb 48 8b 5c 24 08 <4c> 8b 74 24 28 4c 8b 7c 24 30 48 8b 6c 24 10 48 83 c4 38 c3 b8 ff
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff 65 0f             	jmp    *0xf(%rbp)
   5:	c1 15 22 ce 00 02 83 	rcll   $0x83,0x200ce22(%rip)        # 0x200ce2e
   c:	fa                   	cli
   d:	01 8b 44 24 04 75    	add    %ecx,0x75042444(%rbx)
  13:	55                   	push   %rbp
  14:	9c                   	pushf
  15:	5a                   	pop    %rdx
  16:	80 e6 02             	and    $0x2,%dh
  19:	75 6f                	jne    0x8a
  1b:	41 f7 c6 00 02 00 00 	test   $0x200,%r14d
  22:	74 2c                	je     0x50
  24:	fb                   	sti
  25:	48 8b 5c 24 08       	mov    0x8(%rsp),%rbx
  2a:*	4c 8b 74 24 28       	mov    0x28(%rsp),%r14		<-- trapping instruction
  2f:	4c 8b 7c 24 30       	mov    0x30(%rsp),%r15
  34:	48 8b 6c 24 10       	mov    0x10(%rsp),%rbp
  39:	48 83 c4 38          	add    $0x38,%rsp
  3d:	c3                   	ret
  3e:	b8                   	.byte 0xb8
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	4c 8b 74 24 28       	mov    0x28(%rsp),%r14
   5:	4c 8b 7c 24 30       	mov    0x30(%rsp),%r15
   a:	48 8b 6c 24 10       	mov    0x10(%rsp),%rbp
   f:	48 83 c4 38          	add    $0x38,%rsp
  13:	c3                   	ret
  14:	b8                   	.byte 0xb8
  15:	ff                   	.byte 0xff
[   22.725801][    C3] RSP: 0000:ffa0000000557b30 EFLAGS: 00000206
[   22.725803][    C3] RAX: 0000000000000000 RBX: 1ff40000000aaf6f RCX: 0000000000000000
[   22.725804][    C3] RDX: 0000000000000046 RSI: ffffffffbbbebde8 RDI: ffffffffbb66f6c0
[   22.725805][    C3] RBP: ff11000004be0040 R08: 0000000000000001 R09: 0000000000000658
[   22.725806][    C3] R10: 0000000000000003 R11: ffe21c0000943890 R12: dffffc0000000000
[   22.725807][    C3] R13: ff11000004d282d0 R14: 0000000000000246 R15: 00000000ffffffff
[   22.725810][    C3]  __might_resched (./include/linux/lockdep.h:249 kernel/sched/core.c:9125)
[   22.725813][    C3]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   22.725815][    C3]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   22.725817][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   22.725819][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   22.725820][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   22.725822][    C3]  down_write (kernel/locking/rwsem.c:1624)
[   22.725823][    C3]  ? rwsem_down_write_slowpath (./include/linux/list.h:159)
[   22.725825][    C3]  ? kmem_cache_alloc_noprof (mm/slub.c:4909 (discriminator 1))
[   22.725829][    C3]  __anon_vma_prepare (mm/internal.h:221 mm/rmap.c:208)
[   22.725832][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   22.725834][    C3]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   22.725835][    C3]  __vmf_anon_prepare (mm/memory.c:3829)
[   22.725837][    C3]  do_pte_missing (mm/internal.h:503 mm/memory.c:5929 mm/memory.c:6045 mm/memory.c:4566)
[   22.725839][    C3]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 5))
[   22.725841][    C3]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[   22.725842][    C3]  __handle_mm_fault (mm/memory.c:6427 mm/memory.c:6565)
[   22.725844][    C3]  ? __pmd_alloc (./include/linux/mm.h:1682)
[   22.725845][    C3]  ? 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))
[   22.725847][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5574)
[   22.725850][    C3]  handle_mm_fault (mm/memory.c:6734)
[   22.725852][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   22.725854][    C3]  do_user_addr_fault (arch/x86/mm/fault.c:1334)
[   22.725857][    C3]  ? irqentry_enter (./include/linux/irq-entry-common.h:108 ./include/linux/irq-entry-common.h:293 kernel/entry/common.c:113)
[   22.725858][    C3]  exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   22.725860][    C3]  asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:618)
[   22.725862][    C3] RIP: 0033:0x7f7309b2d918
[   22.725868][    C3] Code: 00 00 f3 0f 1e fa 66 0f 6e c6 48 89 f8 66 0f 60 c0 66 0f 61 c0 66 0f 70 c0 00 48 83 fa 10 0f 82 7e 00 00 00 48 83 fa 20 77 12 <0f> 11 44 17 f0 0f 11 07 c3 0f 11 47 e0 0f 11 47 f0 c3 0f 11 07 0f
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	f3 0f 1e fa          	endbr64
   6:	66 0f 6e c6          	movd   %esi,%xmm0
   a:	48 89 f8             	mov    %rdi,%rax
   d:	66 0f 60 c0          	punpcklbw %xmm0,%xmm0
  11:	66 0f 61 c0          	punpcklwd %xmm0,%xmm0
  15:	66 0f 70 c0 00       	pshufd $0x0,%xmm0,%xmm0
  1a:	48 83 fa 10          	cmp    $0x10,%rdx
  1e:	0f 82 7e 00 00 00    	jb     0xa2
  24:	48 83 fa 20          	cmp    $0x20,%rdx
  28:	77 12                	ja     0x3c
  2a:*	0f 11 44 17 f0       	movups %xmm0,-0x10(%rdi,%rdx,1)		<-- trapping instruction
  2f:	0f 11 07             	movups %xmm0,(%rdi)
  32:	c3                   	ret
  33:	0f 11 47 e0          	movups %xmm0,-0x20(%rdi)
  37:	0f 11 47 f0          	movups %xmm0,-0x10(%rdi)
  3b:	c3                   	ret
  3c:	0f 11 07             	movups %xmm0,(%rdi)
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 11 44 17 f0       	movups %xmm0,-0x10(%rdi,%rdx,1)
   5:	0f 11 07             	movups %xmm0,(%rdi)
   8:	c3                   	ret
   9:	0f 11 47 e0          	movups %xmm0,-0x20(%rdi)
   d:	0f 11 47 f0          	movups %xmm0,-0x10(%rdi)
  11:	c3                   	ret
  12:	0f 11 07             	movups %xmm0,(%rdi)
  15:	0f                   	.byte 0xf
[   22.725870][    C3] RSP: 002b:00007ffe813ac418 EFLAGS: 00010283
[   22.725871][    C3] RAX: 00007f7309a33030 RBX: 00007f7309a34000 RCX: 00007f7309a33030
[   22.725872][    C3] RDX: 0000000000000018 RSI: 0000000000000000 RDI: 00007f7309a33030
[   22.725872][    C3] RBP: 00007ffe813ac860 R08: 00007f7309a34000 R09: 0000000000000003
[   22.725873][    C3] R10: 00007f7309a33048 R11: 0000000000000206 R12: 0000000000000003


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