MiClearPartitionPageBitMap

VOID __stdcall MiClearPartitionPageBitMap(_MI_PARTITION *Partition, _RTL_AVL_TREE *PageRoot){
  _ETHREAD *CurrentThread; 
  UINT64 v5; 
  KIRQL v6; 
  _RTL_BALANCED_NODE *Root; 
  _QWORD *Children; 
  unsigned __int64 v9; 
  _QWORD *v10; 
  __int64 v11; 
  _QWORD *v12; 
  _ETHREAD *v13; 
  unsigned int SessionId; 
  char v15; 
  int v16; 
  unsigned __int64 v17; 
  bool v18; 
  __int64 v19; 
  __int64 v20; 
  __int128 v21; 
  __int64 v22; 
  unsigned __int64 v23; 
  __int128 v24; 
  __int64 v25; 
  int v26; 
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  v25 = 0i64;
  v22 = 0i64;
  v23 = 0i64;
  --*((_WORD *)CurrentThread + 243);
  v21 = (unsigned __int64)Partition;
  v24 = 0i64;
  v5 = (UINT64)Partition + 192;
  ExAcquirePushLockExclusiveEx((UINT64)Partition + 192, 0i64);
  v6 = ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)Partition + 50);
  Root = PageRoot->Root;
  Children = 0i64;
  v9 = v6;
  while( Root )
  {
    Children = Root->Children;
    Root = Root->Children[0];
  }
  while( Children )
  {
    v10 = (_QWORD *)Children[1];
    v11 = (__int64)Children;
    v12 = Children;
    if( v10 )
    {
      do
      {
        Children = v10;
        v10 = (_QWORD *)*v10;
      }
      while( v10 );
    }
    else
    {
      while( 1 )
      {
        Children = (_QWORD *)(Children[2] & 0xFFFFFFFFFFFFFFFCui64);
        if( !Children || (_QWORD *)*Children == v12 )
          break;
        v12 = Children;
      }
    }
    MiActOnPartitionNodePages(v11, 7u, (__int16 **)&v21);
  }
  ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)Partition + 25);
  __writecr8(v9);
  MiFreePartitionTree((unsigned __int64)Partition, &v23, 0, 1);
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v5, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((volatile INT64 *)v5);
  v26 = 0;
  v13 = (_ETHREAD *)KeGetCurrentThread();
  if( (unsigned int)MiGetSystemRegionType(v5) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)v13 + 23));
  else
    SessionId = -1;
  --*((_WORD *)v13 + 243);
  v15 = ++*((_BYTE *)v13 + 794);
  v16 = (*((char *)v13 + 792) | *((char *)v13 + 870)) ^ 0x3F;
  while( 1 )
  {
    v18 = !_BitScanReverse((unsigned int *)&v19, v16);
    if( v18 )
      goto LABEL_25;
    v17 = *((_QWORD *)v13 + 100) + 96 * v19;
    v16 &= ~(1 << v19);
    if( (*(_BYTE *)(v17 + 26) & 1) != 0
      && (*(_DWORD *)(v17 + 32) & 1) == 0
      && (*(_QWORD *)(v17 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (v5 & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v17 + 40) == SessionId )
    {
      *(_BYTE *)(v17 + 26) &= ~1u;
      if( *(_QWORD *)(v17 + 32) )
        break;
    }
  }
  if( !v17 )
  {
LABEL_25:
    if( (*((_DWORD *)v13 + 30) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, (ULONG_PTR)v13, v5, SessionId, 0i64);
    goto LABEL_32;
  }
  *(_BYTE *)(v17 + 32) |= 2u;
  if( *(__int64 *)(v17 + 32) < 0 )
    KiAbEntryRemoveFromTree(v17);
  v26 = *(_DWORD *)(v17 + 88) & 0x1FFFF;
  *(_DWORD *)(v17 + 88) &= 0xFFFE0000;
  *(_BYTE *)(v17 + 25) &= ~1u;
  *(_QWORD *)(v17 + 32) = 0i64;
  v20 = (__int64)(v17 - *((_QWORD *)v13 + 100)) / 96;
  if( v15 == 1 )
    *((_BYTE *)v13 + 792) |= 1 << v20;
  else
    _InterlockedOr8((volatile signed __int8 *)v13 + 870, 1 << v20);
LABEL_32:
  --*((_BYTE *)v13 + 794);
  KiAbThreadRemoveBoosts((ULONG_PTR)v13, v5, (unsigned int *)&v26);
  v18 = (*((_WORD *)v13 + 243))++ == 0xFFFF;
  if( v18 && *((_ETHREAD **)v13 + 19) != (_ETHREAD *)((char *)v13 + 152) )
    KiCheckForKernelApcDelivery();
  KiLeaveGuardedRegionUnsafe((__int64)CurrentThread);
}

Referenced by: