MmIsSpecialPoolAddress

UINT64 __stdcall MmIsSpecialPoolAddress(PVOID VirtualAddress){
  _MMPTE *PteBase; 
  PteBase = MmGetPteBase();
  if( VirtualAddress < PteBase || VirtualAddress > MmGetPteLimit() )
    MmIsAddressValidEx((INT64)PteBase + (((unsigned __int64)VirtualAddress >> 9) & 0x7FFFFFFFF8i64));
  return 0i64;
}

Referenced by:

IopAddBugcheckTriageDataFromParameters
KeBugCheck2