ViZwCheckApcRequirement

VOID __stdcall ViZwCheckApcRequirement(PVOID Caller){
  unsigned __int8 CurrentIrql; 
  UINT64 v3; 
  CurrentIrql = KeGetCurrentIrql();
  if( (MmVerifierData & 0x100) != 0 && (CurrentIrql || KeAreAllApcsDisabled()) )
    VerifierBugCheckIfAppropriate(
      0xC4ui64,
      0xE6ui64,
      (UINT64)Caller,
      CurrentIrql,
      *((__int16 *)KeGetCurrentThread() + 243),
      v3);
}

Referenced by:

VfZwDeviceIoControlFile
VfZwFsControlFile
VfZwQueryDirectoryFile
VfZwReadFile
VfZwWriteFile