C :: Access A FIFO (Circular Queue) Between Two Cores

I want to write a program where one core (core 0) will fill the FIFO and other core (core 1 ) will delete the data from FIFO.

Core 0:

I create a fifo

Code:
struct node
{
int info;
struct node *ptr;
}*front,*rear,*temp,*front1;

And my en-queue function is in core 0 and writing to specific memory location..(which works perfectly)

Code:
void enq(int data)
{
if (rear == NULL)
{
rear = (struct node *)malloc(1*sizeof(struct node));
rear->ptr = NULL;
rear->info = data;
front = rear;

[Code] ....

Now the problem is in the core 1. Here I am unable to read the values from the specific memory location. I am getting garbage value. Where I am doing some stupid error.. I did not understand

Code:
(front->ptr) = (unsigned int *) memory_location;

When I print the (front->ptr) it shows correct memory address but inside the De-queue function in core 1, I am getting wrong value..

Code:
int deq(int buf[n]) {
front1 = front;
printf("Val %d ", front->info); // showing wrong value
if (front1 == NULL) {
printf("

Error: Trying to display elements from empty queue");
return 0;

[Code] ...