 struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
{
	struct io_context *ret;

	ret = kmem_cache_alloc_node(iocontext_cachep, gfp_flags, node);
	if (ret) {
		atomic_long_set(&ret->refcount, 1);
		atomic_set(&ret->nr_tasks, 1);
		spin_lock_init(&ret->lock);
		ret->ioprio_changed = 0;
		ret->ioprio = 0;
		ret->last_waited = jiffies; /* doesn't matter... */
		ret->nr_batch_requests = 0; /* because this is 0 */
		ret->aic = NULL;
		INIT_RADIX_TREE(&ret->radix_root, GFP_ATOMIC | __GFP_HIGH);
		INIT_HLIST_HEAD(&ret->cic_list);
		ret->ioc_data = NULL;
	}

	return ret;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.