MiReferenceActiveSubsection

NTSTATUS __fastcall MiReferenceActiveSubsection(ULONG_PTR BugCheckParameter2, int a2, KIRQL a3){
  __int64 v3; 
  UINT64 v4; 
  int v5; 
  KIRQL v6; 
  BOOL v9; 
  __int64 v10; 
  BOOL v11; 
  int v12; 
  NTSTATUS result; 
  INT64 CommittedPages; 
  __int64 v15; 
  __int64 v16; 
  NTSTATUS v17; 
  INT64 a3a; 
  v3 = *(_QWORD *)BugCheckParameter2;
  v4 = 0i64;
  a3a = 0i64;
  v5 = 0;
  v16 = *(_QWORD *)BugCheckParameter2;
  v6 = a3;
  v9 = *(_QWORD *)(*(_QWORD *)BugCheckParameter2 + 64i64) != 0i64;
  if( a3 == 17 )
  {
    v5 = 1;
    v6 = ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)(v3 + 72));
  }
  while( 1 )
  {
    v10 = *(_QWORD *)BugCheckParameter2;
    if( !*(_QWORD *)(BugCheckParameter2 + 8) )
      goto LABEL_19;
    v11 = *(_QWORD *)(v10 + 64) != 0i64;
    v12 = MiIncrementSubsectionViewCount((INT64 *)BugCheckParameter2, a2);
    if( v12 > 1 && v11 && (*(_DWORD *)(v10 + 56) & 0x20) == 0 )
    {
      if( (*(_BYTE *)(BugCheckParameter2 + 34) & 8) != 0 )
        MiRemoveUnusedSubsection((_MSUBSECTION *)BugCheckParameter2);
      *(_WORD *)(BugCheckParameter2 + 32) |= 1u;
    }
    if( v12 >= 2 )
    {
      if( v12 == 2 && (a2 & 0x20) != 0 && a3a )
      {
        v15 = v16;
        ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(v16 + 72));
        __writecr8(v6);
        MiReturnCrossPartitionSectionCharges(
          *(volatile INT64 **)(qword_140C4E388 + 8i64 * (*(_WORD *)(v15 + 60) & 0x3FF)),
          v9,
          a3a);
        if( !v5 )
          ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)(v16 + 72));
      }
      else if( v5 )
      {
        ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(v16 + 72));
        __writecr8(v6);
      }
      return 0;
    }
    if( !v12 )
      break;
    v3 = v16;
    v4 = a3a;
LABEL_19:
    if( (a2 & 0x20) != 0 )
    {
      ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(v3 + 72));
      __writecr8(v6);
      MiReturnCrossPartitionSectionCharges(
        *(volatile INT64 **)(qword_140C4E388 + 8i64 * (*(_WORD *)(v3 + 60) & 0x3FF)),
        v9,
        v4);
      if( !v5 )
        ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)(v3 + 72));
      return -1073741523;
    }
    a3a = MiComputeCrossPartitionSectionCharges((INT64 *)BugCheckParameter2);
    v4 = a3a;
    if( a3a )
    {
      ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(v3 + 72));
      __writecr8(v6);
      result = MiGetSubsectionCharges(BugCheckParameter2);
      v17 = result;
      if( result < 0 )
      {
        if( !v5 )
        {
          ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)(v3 + 72));
          return v17;
        }
        return result;
      }
      a2 |= 0x20u;
      ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)(v3 + 72));
      if( (*(_DWORD *)(v3 + 56) & 0x20) == 0 )
      {
        if( v9 )
        {
          if( !*(_QWORD *)(BugCheckParameter2 + 8) )
          {
LABEL_27:
            ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(v3 + 72));
            __writecr8(v6);
            MiReturnCrossPartitionSectionCharges(
              *(volatile INT64 **)(qword_140C4E388 + 8i64 * (*(_WORD *)(v3 + 60) & 0x3FF)),
              v9,
              a3a);
            if( !v5 )
              ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)(v3 + 72));
            return -1073741302;
          }
          CommittedPages = *(_DWORD *)(BugCheckParameter2 + 44) - (*(_DWORD *)(BugCheckParameter2 + 52) & 0x3FFFFFFFu);
        }
        else
        {
          CommittedPages = MiGetCommittedPages((_QWORD *)v3);
        }
        if( a3a != CommittedPages )
          goto LABEL_27;
      }
    }
    else
    {
      a2 |= 0x20u;
    }
  }
  if( v5 )
  {
    ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(v16 + 72));
    __writecr8(v6);
  }
  return -1073740277;
}

Referenced by: