Unable to read memory after allocate from a function which referenced in main function - c

Question

I have a function which is called get_audio_signal(). This function is called in main thread.
This is main file and main function:
#include <stdio.h>
#include <stdlib.h>
#include "record.h"
/*******************************************************************/
int main(void);
int main(void)
{
SAMPLE *tmp = get_audio_signal();
free(tmp);
return 1;
}
get_audio_signal was declared in record.h. Here is get_audio_signal() function:
SAMPLE* get_audio_signal()
{
PaStreamParameters inputParameters, outputParameters;
PaStream *stream;
PaError err;
SAMPLE *recordedSamples;
int i;
int totalFrames;
int numSamples;
int numBytes;
SAMPLE max, average, val;
printf("patest_read_record.c\n"); fflush(stdout);
totalFrames = NUM_SECONDS * SAMPLE_RATE; /* Record for a few seconds. */
numSamples = totalFrames * NUM_CHANNELS;
numBytes = numSamples * sizeof(SAMPLE);
recordedSamples = (SAMPLE *)malloc(numBytes);
if (recordedSamples == NULL)
{
printf("Could not allocate record array.\n");
exit(1);
}
//printf("%f ", *recordedSamples);
for (i = 0; i<numSamples; i++) recordedSamples[i] = 0;
err = Pa_Initialize();
if (err != paNoError) goto error;
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input
device */
if (inputParameters.device == paNoDevice) {
fprintf(stderr, "Error: No default input device.\n");
goto error;
}
inputParameters.channelCount = NUM_CHANNELS;
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
inputParameters.suggestedLatency =
Pa_GetDeviceInfo(inputParameters.device)->defaultLowInputLatency;
inputParameters.hostApiSpecificStreamInfo = NULL;
/* Record some audio. -------------------------------------------- */
err = Pa_OpenStream(
&stream,
&inputParameters,
NULL, /* &outputParameters, */
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't
bother clipping them */
NULL, /* no callback, use blocking API */
NULL); /* no callback, so no callback userData */
if (err != paNoError) goto error;
err = Pa_StartStream(stream);
if (err != paNoError) goto error;
printf("Now recording!!\n"); fflush(stdout);
err = Pa_ReadStream(stream, recordedSamples, totalFrames);
if (err != paNoError) goto error;
err = Pa_CloseStream(stream);
if (err != paNoError) goto error;
return recordedSamples;
error:
Pa_Terminate();
fprintf(stderr, "An error occured while using the portaudio stream\n");
fprintf(stderr, "Error number: %d\n", err);
fprintf(stderr, "Error message: %s\n", Pa_GetErrorText(err));
return -1;
}
My issue is, when i allocate for recordedSamples by using malloc then recoredSamples is unable to read memory. Hence, it make my assignment for recordedSamples crash. The error return is "Access violation writing location".
Here is the path that made the program crashed:
recordedSamples = (SAMPLE *)malloc(numBytes);
if (recordedSamples == NULL)
{
printf("Could not allocate record array.\n");
exit(1);
}
//printf("%f ", *recordedSamples);
for (i = 0; i<numSamples; i++) recordedSamples[i] = 0;
Here is constant define.
#define SAMPLE_RATE (16000)
#define FRAMES_PER_BUFFER (1024)
#define NUM_SECONDS (5)
#define NUM_CHANNELS (1)
#define DITHER_FLAG (0) /**/
#define PA_SAMPLE_TYPE paFloat32
typedef float SAMPLE;
#define SAMPLE_SILENCE (0.0f)
#define PRINTF_S_FORMAT "%.8f"
Can anyone explain for me!!!