CMSIS DSP returning Hard Fault (Cortex M0)

Question

I'm trying to debug this code and identify what's causing a hard fault upon calling the fft method. The program is reading from an ADC via interrupts and every 128 cycles it calculates the FFT of the previous set of cycles.

I have indicated the line that is causing the fault. Can anyone identify what I am doing wrong?

uint16_t dataADC[64];
uint16_t dataFFT[128];
uint16_t magFFT[64];
uint16_t count = 127;

arm_rfft_instance_q15 RealFFT_Instance;
arm_cfft_radix4_instance_q15 MyComplexFFT_Instance;


void ADC_IRQHandler(void){
    /* Read ADC value */
    Chip_ADC_ReadValue(LPC_ADC, ADC_CH0, &dataADC[count]);

    count--;

    if (count == 0){
        NVIC_DisableIRQ(ADC_IRQn);
    }

    Chip_ADC_SetStartMode(LPC_ADC, ADC_START_NOW, ADC_TRIGGERMODE_RISING);
}

/**
 * @brief   main routine for ADC example
 * @return  Function should not exit
 */
int main(void){
    SystemCoreClockUpdate();
    Board_Init();
    Init_ADC_PinMux();
    DEBUGSTR("ADC Demo\r\n");

    //Init FFT
    arm_rfft_init_q15(&RealFFT_Instance, &MyComplexFFT_Instance, 64,0,1);

    /* ADC Init */
    Chip_ADC_Init(LPC_ADC, &ADCSetup);
    Chip_ADC_EnableChannel(LPC_ADC, ADC_CH0, ENABLE);

    /* Enable ADC interrupt*/
    NVIC_ClearPendingIRQ(ADC_IRQn);
    NVIC_EnableIRQ(ADC_IRQn);

    HAID_ADC->INTEN |= 0x0011;

    /* Start A/D conversion */
    Chip_ADC_SetStartMode(LPC_ADC, ADC_START_NOW, ADC_TRIGGERMODE_RISING);

    while (1) {
        if(count == 0){
                NVIC_DisableIRQ(ADC_IRQn);
                arm_rfft_q15(&RealFFT_Instance, (q15_t *)dataADC, (q15_t *)dataFFT); //Causing Hard Fault!
                for(int i = 0; i < 128; i++){
                    dataFFT[i] <<= 8; //scaling
                }
                arm_cmplx_mag_q15((q15_t *)dataFFT, (q15_t *)magFFT, 64);
                count = 63;
                NVIC_EnableIRQ(ADC_IRQn);
        }
        __WFI();
    }
    return 0;
}

#endif