Segmentation fault (core dumped)

reason ： The structure must be initialized before it can be used , Include structures nested in structures , The structure of the nested structure in the structure .

    otaTaskInstruction_t *ota = malloc(sizeof(otaTaskInstruction_t));
    ota->taskArray = malloc(sizeof(ota->taskArray));
    ota->taskArray->fileInfoArray = malloc(sizeof(ota->taskArray->fileInfoArray));
    printf("000000\n");
    const char *name = "12312";
    // ota.taskArray->fileInfoArray = malloc(sizeof(ota.taskArray->fileInfoArray));
    ota->taskArray->fileInfoArray->fileLevelName = name;
    printf("111111\n");
    // task_instruction_add->taskArray->fileInfoArray->fileName = "filename";
    printf("-----%s\n", ota->taskArray->fileInfoArray->fileLevelName);