In an information processing apparatus for relaying a calling from a first module to a function inside a second module in software divided into a plurality of modules, the calling is relayed from the first module to the function inside the second module. A log in the second module corresponding to the calling is obtained. The log includes at least a write starting address of binary data and a data size thereof. An area where the binary data is written is determined based on the write starting address and the data size thereof. Whether or not writing into the decided area is permitted is determined. On the basis of the determination result, writing into the decided area of the binary data is controlled. As a result, writing into an invalid area of the log is prevented without modifying the software.