Dynamic allocation for 2 2D arrays in C

Question

So im trying to create two dynamic arrays, one for holding reference points and the other for holding query points but i get this error: malloc(): corrupted top size Aborted (core dumped) I want to create 2 2D arrays with the same widths, row size doesnt matter but there should be at least one row.

double **createSyntheticReference(int rows, int columns)
{
    int i,j;

    // Dynamically allocate a 2D array
    double **student = (double **)malloc(rows * sizeof(int *)); 
    for ( i=0; i<rows; i++) 
         student[i] = (double *)malloc(columns * sizeof(int));
    // load synthetic data
    for(i=0; i<rows;i++) {
        for(j=0; j<columns; j++) {
            student[i][j] = rand()%100+1;       
        }    
    }
    for(i=0; i<rows; i++) {
        printf("%lf", student[i][0]);
        for(j=1; j<columns; j++) {
            printf("%17lf", student[i][j]);
        }
        puts("");
    }
    return student;
}

double **createSyntheticQuery(int columns)
{
    int i,j;
    int rows = 10;
    // Dynamically allocate a 2D array
    double **query = (double **)malloc(rows * sizeof(int *)); 
    for ( i=0; i<rows; i++) 
         query[i] = (double *)malloc(columns * sizeof(int));
    // load synthetic data
    for(i=0; i<rows;i++) {
        for(j=0; j<columns; j++) {
            query[i][j] = rand()%100+1;       
        }    
    }
    for(i=0; i<rows; i++) {
        printf("%lf", query[i][0]);
        for(j=1; j<columns; j++) {
            printf("%17lf", query[i][j]);
        }
        puts("");
    }
    return query;
}

in my main i run this to try and create the 2 2d arrays:

double **student = createSyntheticReference(rows, columns);
double **query = createSyntheticQuery(columns);

Answer 1

@kaylum helped me with problem, i didnt see that im allocating space for int but it should be double

double **student = (double **)malloc(rows * sizeof(double *)); 
    for ( i=0; i<rows; i++) 
         student[i] = (double *)malloc(columns * sizeof(double));