static void __ip_vs_del_dest(struct ip_vs_dest *dest)
{
	ip_vs_kill_estimator(&dest->stats);

	/*
	 *  Remove it from the d-linked list with the real services.
	 */
	write_lock_bh(&__ip_vs_rs_lock);
	ip_vs_rs_unhash(dest);
	write_unlock_bh(&__ip_vs_rs_lock);

	/*
	 *  Decrease the refcnt of the dest, and free the dest
	 *  if nobody refers to it (refcnt=0). Otherwise, throw
	 *  the destination into the trash.
	 */
	if (atomic_dec_and_test(&dest->refcnt)) {
		ip_vs_dst_reset(dest);
		/* simply decrease svc->refcnt here, let the caller check
		   and release the service if nobody refers to it.
		   Only user context can release destination and service,
		   and only one user context can update virtual service at a
		   time, so the operation here is OK */
		atomic_dec(&dest->svc->refcnt);
		kfree(dest);
	} else {
		IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, "
			      "dest->refcnt=%d\n",
			      IP_VS_DBG_ADDR(dest->af, &dest->addr),
			      ntohs(dest->port),
			      atomic_read(&dest->refcnt));
		list_add(&dest->n_list, &ip_vs_dest_trash);
		atomic_inc(&dest->refcnt);
	}
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.