c-在引入两个矩阵的元素后出现的分割错误

若我运行程序，它可以让我输入3个整数n、m、p和矩阵元素。n是行，m和p是列。然而，它说在我输入最后一个元素后不久就会出现分割错误，就像这样；

4.3.2.输入元素矩阵1[0][0]：3输入元素矩阵1[0][1]：9输入元素矩阵1[0][2]：3输入元素矩阵1[1][0]：2输入元素矩阵1[1][1]:7输入元素矩阵1[1][2]：9输入元素矩阵1[2][0]：0输入元素矩阵1[2][1]:5输入元素矩阵1[2][2]:8输入元素矩阵1[3][0]：5输入元素矩阵1[3][1]：4输入元素矩阵1[3][2]:3输入元素矩阵2[0][0]：8输入元素矩阵2[0][1]：3输入元素矩阵2[1][0]：9输入元素矩阵2[1][1]:7输入元素矩阵2[2][0]：8输入元素矩阵2[2][1]:5分段故障

    matrix1 = (int**) malloc(row1 * sizeof(int*));
//read elements of 1st matrix
for (i = 0; i < row1; i++) {
    matrix1[i] = (int*) malloc(col1 * sizeof (int));
    for (j = 0; j < col1; j++) {
      printf("nEnter element matrix 1[%d][%d]: ", i, j);
        scanf("%d", &matrix1[i][j]);
    }
}
matrix2 = (int**) malloc(row2 * sizeof (int*));
//read elements of 2nd matrix
for (i = 0; i < row2; i++) {
    matrix2[i] = (int*) malloc(col2 * sizeof (int));
    for (j = 0; j < col2; j++) {
      printf("nEnter element matrix 2[%d][%d]: ", i, j);
        scanf("%d", &matrix2[i][j]);
    }
}
//memory allocation of no. of cols in matrix
mtxProduct = (int**) malloc(row1 * sizeof (int*));
//memory allocation of no. of cols in matrix
for (i = 0; i < col2; i++) {
    mtxProduct[i] = (int*) malloc(col2 * sizeof (int));
}
//multiplication
for (i = 0; i < row1; i++) {
    for (j = 0; j < col2; j++) {
        mtxProduct[i][j] = 0;
        for (e = 0; e < row2; e++) {
            mtxProduct[i][j] +=(matrix1[i][e] * matrix2[e][j]);
        }
    }
}
//print matrix product
for (i = 0; i < row1; i++) {
    for (j = 0; j < col2; j++) {
        printf("%d ", mtxProduct[i][j]);
    }
    printf("n");
}
return 0;

}