PspUnlockQuotaExpansion

INT64 __fastcall PspUnlockQuotaExpansion(INT64 a1, UINT8 a2){
  INT64 v2; 
  unsigned __int64 v3; 
  INT64 result; 
  _ETHREAD *CurrentThread; 
  char v6; 
  _ETHREAD *v7; 
  unsigned int SessionId; 
  char v9; 
  int v10; 
  bool v11; 
  __int64 v12; 
  unsigned __int64 v13; 
  int v14; 
  unsigned int v15; 
  __int64 v16; 
  int v17; 
  v2 = a1 + 16;
  v3 = a2;
  if( *(_DWORD *)a1 )
  {
    KxReleaseSpinLock((UINT64 *)(a1 + 16));
    result = (unsigned int)KiIrqlFlags;
    __writecr8(v3);
  }
  else
  {
    CurrentThread = (_ETHREAD *)KeGetCurrentThread();
    v6 = _InterlockedExchangeAdd64((volatile signed __int64 *)v2, 0xFFFFFFFFFFFFFFFFui64);
    if( (v6 & 2) != 0 && (v6 & 4) == 0 )
      ExfTryToWakePushLock((volatile INT64 *)(a1 + 16));
    v17 = 0;
    v7 = (_ETHREAD *)KeGetCurrentThread();
    if( (unsigned int)MiGetSystemRegionType(v2) == 1 )
      SessionId = MmGetSessionIdEx(*((_QWORD *)v7 + 23));
    else
      SessionId = -1;
    --*((_WORD *)v7 + 243);
    v9 = ++*((_BYTE *)v7 + 794);
    v10 = (*((char *)v7 + 792) | *((char *)v7 + 870)) ^ 0x3F;
    while( 1 )
    {
      v11 = !_BitScanReverse((unsigned int *)&v12, v10);
      if( v11 )
        break;
      v13 = *((_QWORD *)v7 + 100) + 96 * v12;
      v10 &= ~(1 << v12);
      if( (*(_BYTE *)(v13 + 26) & 1) != 0
        && (*(_DWORD *)(v13 + 32) & 1) == 0
        && (*(_QWORD *)(v13 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (v2 & 0x7FFFFFFFFFFFFFFCi64)
        && *(_DWORD *)(v13 + 40) == SessionId )
      {
        *(_BYTE *)(v13 + 26) &= ~1u;
        if( *(_QWORD *)(v13 + 32) )
        {
          if( v13 )
          {
            *(_BYTE *)(v13 + 32) |= 2u;
            if( *(__int64 *)(v13 + 32) < 0 )
              KiAbEntryRemoveFromTree(v13);
            v14 = *(_DWORD *)(v13 + 88) & 0x1FFFF;
            v15 = *(_DWORD *)(v13 + 88) & 0xFFFE0000;
            *(_BYTE *)(v13 + 25) &= ~1u;
            v17 = v14;
            *(_DWORD *)(v13 + 88) = v15;
            *(_QWORD *)(v13 + 32) = 0i64;
            v16 = (__int64)(v13 - *((_QWORD *)v7 + 100)) / 96;
            if( v9 == 1 )
              *((_BYTE *)v7 + 792) |= 1 << v16;
            else
              _InterlockedOr8((volatile signed __int8 *)v7 + 870, 1 << v16);
            goto LABEL_18;
          }
          break;
        }
      }
    }
    if( (*((_DWORD *)v7 + 30) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, (ULONG_PTR)v7, v2, SessionId, 0i64);
LABEL_18:
    --*((_BYTE *)v7 + 794);
    KiAbThreadRemoveBoosts((ULONG_PTR)v7, v2, (unsigned int *)&v17);
    v11 = (*((_WORD *)v7 + 243))++ == 0xFFFF;
    if( v11 && *((_ETHREAD **)v7 + 19) != (_ETHREAD *)((char *)v7 + 152) )
      KiCheckForKernelApcDelivery();
    return KiLeaveGuardedRegionUnsafe((__int64)CurrentThread);
  }
  return result;
}

Referenced by: