MiCommitPageTableRangesForVad

NTSTATUS __stdcall MiCommitPageTableRangesForVad(_MMVAD_SHORT *Vad){
  _QWORD *ExtraCreateInfo; 
  int v3; 
  NTSTATUS result; 
  _ETHREAD *CurrentThread; 
  _EPROCESS *Process; 
  UINT64 p_PageTableCommitmentLock; 
  _QWORD *v8; 
  unsigned __int64 v9; 
  _QWORD *v10; 
  _ETHREAD *v11; 
  unsigned int SessionId; 
  unsigned __int8 v13; 
  int v14; 
  bool v15; 
  __int64 v16; 
  _KLOCK_ENTRY *v17; 
  __int64 v18; 
  UINT64 a3; 

  ExtraCreateInfo = Vad->ExtraCreateInfo;
  v3 = 0;
  if( !ExtraCreateInfo )
    return 0;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  Process = CurrentThread->Tcb.ApcState.Process;
  Vad->VadNode.ParentValue = 1i64;
  --CurrentThread->Tcb.SpecialApcDisable;
  p_PageTableCommitmentLock = (UINT64)&Process->PageTableCommitmentLock;
  ExAcquirePushLockExclusiveEx((_EX_PUSH_LOCK *)p_PageTableCommitmentLock, 0i64);
  do
  {
    v8 = (_QWORD *)*ExtraCreateInfo;
    if( v3 >= 0 )
    {
      v9 = 0i64;
      if( ExtraCreateInfo[1] )
      {
        v10 = ExtraCreateInfo + 2;
        do
        {
          v3 = MiCommitPageTablesForVad(
                 Vad,
                 (VOID *)(*v10 & 0xFFFFFFFFFFE00000ui64),
                 (VOID *)((*v10 & 0xFFFFFFFFFFE00000ui64) + ((*v10 & 0x1FFFFFi64) << 21) + 0x1FFFFF));
          if( v3 < 0 )
            break;
          ++v9;
          ++v10;
        }
        while( v9 < ExtraCreateInfo[1] );
      }
    }
    ExFreePoolWithTag(ExtraCreateInfo, 0);
    ExtraCreateInfo = v8;
  }
  while( v8 );
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)p_PageTableCommitmentLock, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)p_PageTableCommitmentLock);
  LODWORD(a3) = 0;
  v11 = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType(p_PageTableCommitmentLock) == 1 )
    SessionId = MmGetSessionIdEx(v11->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v11->Tcb.SpecialApcDisable;
  v13 = ++v11->Tcb.AbAllocationRegionCount;
  v14 = ((char)v11->Tcb.AbEntrySummary | (char)v11->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v15 = !_BitScanReverse((unsigned int *)&v16, v14);
    if( v15 )
      break;
    v17 = &v11->Tcb.LockEntries[v16];
    v14 &= ~(1 << v16);
    if( (v17->AcquiredByte & 1) != 0
      && (v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (p_PageTableCommitmentLock & 0x7FFFFFFFFFFFFFFCi64)
      && v17->LockState.SessionId == SessionId )
    {
      v17->AcquiredByte &= ~1u;
      if( v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
      {
        if( v17 )
        {
          v17->CrossThreadReleasableAndBusyByte |= 2u;
          if( v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
            KiAbEntryRemoveFromTree(v17);
          LODWORD(a3) = v17->BoostBitmap.AllFields & 0x1FFFF;
          v17->BoostBitmap.AllFields &= 0xFFFE0000;
          v17->ThreadLocalFlags &= ~1u;
          v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
          v18 = v17 - v11->Tcb.LockEntries;
          if( v13 == 1 )
            v11->Tcb.AbEntrySummary |= 1 << v18;
          else
            _InterlockedOr8((volatile signed __int8 *)&v11->Tcb.AbOrphanedEntrySummary, 1 << v18);
          goto LABEL_28;
        }
        break;
      }
    }
  }
  if( (*(&v11->Tcb.MiscFlags + 1) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, v11, (PVOID)p_PageTableCommitmentLock, (PVOID)SessionId, 0i64);
LABEL_28:
  --v11->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v11->Tcb, (VOID *)p_PageTableCommitmentLock, &a3);
  v15 = v11->Tcb.SpecialApcDisable++ == -1;
  if( v15 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v11->Tcb.ApcState.ApcListHead[0].Flink != &v11->Tcb.152 )
    KiCheckForKernelApcDelivery();
  KiLeaveGuardedRegionUnsafe((__int64)CurrentThread);
  result = v3;
  Vad->VadNode.ParentValue = -2i64;
  return result;
}

Referenced by: