void mlock_vma_page(struct page *page)
{
	/* Serialize with page migration */
	BUG_ON(!PageLocked(page));

	VM_BUG_ON_PAGE(PageTail(page), page);
	VM_BUG_ON_PAGE(PageCompound(page) && PageDoubleMap(page), page);

	if (!TestSetPageMlocked(page)) {
		mod_zone_page_state(page_zone(page), NR_MLOCK,
				    hpage_nr_pages(page));
		count_vm_event(UNEVICTABLE_PGMLOCKED);
		if (!isolate_lru_page(page))
			putback_lru_page(page);
	}
}

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.