841 	    void * messageArgument, vm_size_t argSize );
844 	    void * messageArgument, vm_size_t argSize );
1147     void * argument, vm_size_t argSize )  in _handler()  argument
1154 		ref, messageType, provider, argument, argSize);  in _handler()
1165 	vm_size_t                    argSize;  in handler()  local
1176 			argSize = sizeof(io_user_reference_t);  in handler()
1178 			argSize = sizeof(uint32_t);  in handler()
1184 		argSize = callerArgSize;  in handler()
1190 	type |= ((argSize & kIOKitNoticationMsgSizeMask) << kIOKitNoticationTypeSizeAdjShift);  in handler()
1191 	argSize = (argSize + kIOKitNoticationMsgSizeMask) & ~kIOKitNoticationMsgSizeMask;  in handler()
1197 …if (os_add3_overflow(msgSize, offsetof(IOServiceInterestContent64, messageArgument), argSize, &thi…  in handler()
1239 		        assert((char *)data->messageArgument + argSize <= (char *)payload + payloadSize);  in handler()