MiRemovePlaceholderVad

VOID __stdcall MiRemovePlaceholderVad(_RTL_BALANCED_NODE *Node){
  _ETHREAD *CurrentThread; 
  INT64 Process; 
  unsigned __int64 v4; 
  _MMSUPPORT_SHARED *SharedVm; 
  UINT8 v6; 
  UINT8 v7; 
  _ETHREAD *v8; 
  unsigned int SessionId; 
  unsigned __int8 v10; 
  int v11; 
  _KLOCK_ENTRY *v12; 
  bool v13; 
  __int64 v14; 
  __int64 v15; 
  UINT64 a3; 

  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  Process = (INT64)CurrentThread->Tcb.ApcState.Process;
  --CurrentThread->Tcb.SpecialApcDisable;
  v4 = Process + 1232;
  ExAcquirePushLockExclusiveEx((_EX_PUSH_LOCK *)(Process + 1232), 0i64);
  SharedVm = MiGetSharedVm((_MMSUPPORT_INSTANCE *)(Process + 1664));
  v6 = ExAcquireSpinLockExclusive((INT64 *)&SharedVm->WorkingSetLock);
  SharedVm->GoodCitizenWaiting = 0;
  v7 = v6;
  MiRemoveVad(Node, Process);
  MiUnlockWorkingSetExclusive((_MMSUPPORT_INSTANCE *)(Process + 1664), v7);
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)(Process + 1232), 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)(Process + 1232));
  LODWORD(a3) = 0;
  v8 = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType(Process + 1232) == 1 )
    SessionId = MmGetSessionIdEx(v8->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v8->Tcb.SpecialApcDisable;
  v10 = ++v8->Tcb.AbAllocationRegionCount;
  v11 = ((char)v8->Tcb.AbEntrySummary | (char)v8->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v13 = !_BitScanReverse((unsigned int *)&v14, v11);
    if( v13 )
      goto LABEL_13;
    v12 = &v8->Tcb.LockEntries[v14];
    v11 &= ~(1 << v14);
    if( (v12->AcquiredByte & 1) != 0
      && (v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (v4 & 0x7FFFFFFFFFFFFFFCi64)
      && v12->LockState.SessionId == SessionId )
    {
      v12->AcquiredByte &= ~1u;
      if( v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
        break;
    }
  }
  if( !v12 )
  {
LABEL_13:
    if( (*(&v8->Tcb.MiscFlags + 1) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, v8, (PVOID)v4, (PVOID)SessionId, 0i64);
    goto LABEL_20;
  }
  v12->CrossThreadReleasableAndBusyByte |= 2u;
  if( v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
    KiAbEntryRemoveFromTree(v12);
  LODWORD(a3) = v12->BoostBitmap.AllFields & 0x1FFFF;
  v12->BoostBitmap.AllFields &= 0xFFFE0000;
  v12->ThreadLocalFlags &= ~1u;
  v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
  v15 = v12 - v8->Tcb.LockEntries;
  if( v10 == 1 )
    v8->Tcb.AbEntrySummary |= 1 << v15;
  else
    _InterlockedOr8((volatile signed __int8 *)&v8->Tcb.AbOrphanedEntrySummary, 1 << v15);
LABEL_20:
  --v8->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v8->Tcb, (VOID *)v4, &a3);
  v13 = v8->Tcb.SpecialApcDisable++ == -1;
  if( v13 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v8->Tcb.ApcState.ApcListHead[0].Flink != &v8->Tcb.152 )
    KiCheckForKernelApcDelivery();
  KiLeaveGuardedRegionUnsafe((__int64)CurrentThread);
}

Referenced by: