======================================
| [   23.890816][    C2]  #2: ff1100000e09b378 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap (./include/linux/mmap_lock.h:536 mm/mmap.c:1308)
| [   23.890979][    C2]  #3: ffffffffbc977c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   23.891144][    C2]
| [   23.891144][    C2] stack backtrace:
[   23.891263][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.891265][    C2] Call Trace:
[   23.891267][    C2]  <IRQ>
[   23.891268][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.891272][    C2]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   23.891275][    C2]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   23.891279][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   23.891280][    C2]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   23.891282][    C2]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   23.891284][    C2]  ? save_trace (kernel/locking/lockdep.c:589)
[   23.891286][    C2]  ? kernel_pgtable_work_func (mm/pgtable-generic.c:436)
[   23.891288][    C2]  mark_lock (kernel/locking/lockdep.c:4753)
[   23.891290][    C2]  mark_usage (kernel/locking/lockdep.c:4642)
[   23.891291][    C2]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   23.891293][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   23.891294][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   23.891297][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   23.891298][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   23.891300][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   23.891302][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   23.891303][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   23.891305][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   23.891306][    C2] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   23.891308][    C2]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   23.891310][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   23.891311][    C2]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   23.891314][    C2]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   23.891316][    C2]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   23.891317][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   23.891319][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   23.891320][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   23.891322][    C2]  rcu_core (kernel/rcu/tree.c:2869)
[   23.891324][    C2]  handle_softirqs (kernel/softirq.c:622)
[   23.891326][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.891329][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   23.891330][    C2]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   23.891332][    C2]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   23.891333][    C2]  irq_exit_rcu (kernel/softirq.c:752)
[   23.891335][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   23.891336][    C2]  </IRQ>
[   23.891337][    C2]  <TASK>
[   23.891338][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   23.891339][    C2] RIP: 0010:stack_trace_consume_entry (kernel/stacktrace.c:87)
[   23.891342][    C2] Code: 78 08 8b 50 10 48 b9 00 00 00 00 00 fc ff df 49 89 f8 49 c1 e8 03 41 0f b6 0c 08 84 c9 74 09 80 f9 03 0f 8e ab 00 00 00 31 c9 <3b> 50 08 0f 83 87 00 00 00 48 b9 00 00 00 00 00 fc ff df 48 8d 78
All code
========
   0:	78 08                	js     0xa
   2:	8b 50 10             	mov    0x10(%rax),%edx
   5:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
   c:	fc ff df 
   f:	49 89 f8             	mov    %rdi,%r8
  12:	49 c1 e8 03          	shr    $0x3,%r8
  16:	41 0f b6 0c 08       	movzbl (%r8,%rcx,1),%ecx
  1b:	84 c9                	test   %cl,%cl
  1d:	74 09                	je     0x28
  1f:	80 f9 03             	cmp    $0x3,%cl
  22:	0f 8e ab 00 00 00    	jle    0xd3
  28:	31 c9                	xor    %ecx,%ecx
  2a:*	3b 50 08             	cmp    0x8(%rax),%edx		<-- trapping instruction
  2d:	0f 83 87 00 00 00    	jae    0xba
  33:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  3a:	fc ff df 
  3d:	48                   	rex.W
  3e:	8d                   	.byte 0x8d
  3f:	78                   	.byte 0x78

Code starting with the faulting instruction
===========================================
   0:	3b 50 08             	cmp    0x8(%rax),%edx
   3:	0f 83 87 00 00 00    	jae    0x90
   9:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  10:	fc ff df 
  13:	48                   	rex.W
  14:	8d                   	.byte 0x8d
  15:	78                   	.byte 0x78
[   23.891344][    C2] RSP: 0018:ffa0000000637440 EFLAGS: 00000246
[   23.891346][    C2] RAX: ffa0000000637528 RBX: ffffffffb98208f0 RCX: 0000000000000000
[   23.891347][    C2] RDX: 000000000000000a RSI: ffffffffb9fb6c05 RDI: ffa0000000637530
[   23.891348][    C2] RBP: ffa00000006374f8 R08: 1ff40000000c6ea6 R09: ffffffffbd3606a4
[   23.891349][    C2] R10: 0000000000000002 R11: 0000000000000002 R12: ffa0000000637528
[   23.891350][    C2] R13: 0000000000000000 R14: ff1100000fb38040 R15: 0000000000000001
[   23.891351][    C2]  ? write_profile (profile.c:?)
[   23.891353][    C2]  ? exec_binprm (fs/exec.c:1664 fs/exec.c:1696)
[   23.891355][    C2]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   23.891357][    C2]  arch_stack_walk (arch/x86/kernel/stacktrace.c:27 (discriminator 1))
[   23.891361][    C2]  ? exec_binprm (fs/exec.c:1664 fs/exec.c:1696)
[   23.891362][    C2]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   23.891364][    C2]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   23.891367][    C2]  set_track_prepare (mm/slub.c:1038)
[   23.891370][    C2]  ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[   23.891372][    C2]  ? kmem_cache_free (./include/linux/slab.h:950 (discriminator 1) mm/slub.c:2641 (discriminator 1) mm/slub.c:6251 (discriminator 1) mm/slub.c:6378 (discriminator 1))
[   23.891374][    C2]  ? __put_anon_vma (mm/rmap.c:137 mm/rmap.c:2917)
[   23.891376][    C2]  ? unlink_anon_vmas (mm/internal.h:216 mm/rmap.c:536)
[   23.891377][    C2]  ? free_pgtables (mm/memory.c:414)
[   23.891379][    C2]  ? exit_mmap (mm/mmap.c:1312)
[   23.891381][    C2]  ? mmput (kernel/fork.c:1178 kernel/fork.c:1201)
[   23.891382][    C2]  ? exec_mmap (fs/exec.c:893)
[   23.891383][    C2]  ? begin_new_exec (fs/exec.c:1148)
[   23.891384][    C2]  ? load_elf_binary (fs/binfmt_elf.c:1010)
[   23.891387][    C2]  __alloc_object (mm/kmemleak.c:701)
[   23.891389][    C2]  __create_object (mm/kmemleak.c:779)
[   23.891390][    C2]  __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[   23.891393][    C2]  ? __put_anon_vma (mm/rmap.c:137 mm/rmap.c:2917)
[   23.891394][    C2]  kmem_cache_free (./include/linux/slab.h:950 (discriminator 1) mm/slub.c:2641 (discriminator 1) mm/slub.c:6251 (discriminator 1) mm/slub.c:6378 (discriminator 1))
[   23.891396][    C2]  __put_anon_vma (mm/rmap.c:137 mm/rmap.c:2917)
[   23.891398][    C2]  unlink_anon_vmas (mm/internal.h:216 mm/rmap.c:536)
[   23.891400][    C2]  free_pgtables (mm/memory.c:414)
[   23.891403][    C2]  ? free_pgd_range (mm/memory.c:351)
[   23.891404][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   23.891406][    C2]  ? rwsem_down_write_slowpath (./include/linux/list.h:159)
[   23.891408][    C2]  exit_mmap (mm/mmap.c:1312)
[   23.891410][    C2]  ? vm_brk_flags (./include/linux/seqlock.h:453)
[   23.891412][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   23.891413][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   23.891415][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.891418][    C2]  ? __mutex_unlock_slowpath (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:4480 kernel/locking/mutex.c:1007)
[   23.891421][    C2]  mmput (kernel/fork.c:1178 kernel/fork.c:1201)
[   23.891423][    C2]  exec_mmap (fs/exec.c:893)
[   23.891425][    C2]  begin_new_exec (fs/exec.c:1148)
[   23.891427][    C2]  load_elf_binary (fs/binfmt_elf.c:1010)
[   23.891429][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.891430][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   23.891432][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.891434][    C2]  ? load_elf_interp.isra.0 (fs/binfmt_elf.c:693 (discriminator 4))
[   23.891435][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   23.891436][    C2]  ? exec_binprm (fs/exec.c:1662 fs/exec.c:1696)
[   23.891438][    C2]  exec_binprm (fs/exec.c:1664 fs/exec.c:1696)
[   23.891440][    C2]  ? check_unsafe_exec (fs/exec.c:1522)
[   23.891442][    C2]  bprm_execve (fs/exec.c:1748 fs/exec.c:1724)
[   23.891443][    C2]  do_execveat_common.isra.0 (fs/exec.c:1846)
[   23.891445][    C2]  __x64_sys_execve (fs/exec.c:1930 (discriminator 2) fs/exec.c:1924 (discriminator 2) fs/exec.c:1924 (discriminator 2))
[   23.891447][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   23.891448][    C2]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   23.891451][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   23.891453][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.891454][    C2] RIP: 0033:0x7f674a80815b
[   23.891458][    C2] Code: Unable to access opcode bytes at 0x7f674a808131.

Code starting with the faulting instruction
===========================================
[   23.891459][    C2] RSP: 002b:00007ffcb3f57fd8 EFLAGS: 00000202 ORIG_RAX: 000000000000003b
[   23.891461][    C2] RAX: ffffffffffffffda RBX: 000055bd21feaf00 RCX: 00007f674a80815b
[   23.891462][    C2] RDX: 000055bd21f4e2c0 RSI: 000055bd21fadd40 RDI: 000055bd21feaf00
[   23.891462][    C2] RBP: 00007ffcb3f580c0 R08: 000055bd21ed9830 R09: 0000000000000070
[   23.891463][    C2] R10: 0000000000000070 R11: 0000000000000202 R12: 000055bd21feaf00


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