static int __commit_inmem_pages(struct inode *inode,
					struct list_head *revoke_list)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct f2fs_inode_info *fi = F2FS_I(inode);
	struct inmem_pages *cur, *tmp;
	struct f2fs_io_info fio = {
		.sbi = sbi,
		.type = DATA,
		.op = REQ_OP_WRITE,
		.op_flags = REQ_SYNC | REQ_PRIO,
		.io_type = FS_DATA_IO,
	};
	pgoff_t last_idx = ULONG_MAX;
	int err = 0;

	list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
		struct page *page = cur->page;

		lock_page(page);
		if (page->mapping == inode->i_mapping) {
			trace_f2fs_commit_inmem_page(page, INMEM);

			set_page_dirty(page);
			f2fs_wait_on_page_writeback(page, DATA, true);
			if (clear_page_dirty_for_io(page)) {
				inode_dec_dirty_pages(inode);
				remove_dirty_inode(inode);
			}
retry:
			fio.page = page;
			fio.old_blkaddr = NULL_ADDR;
			fio.encrypted_page = NULL;
			fio.need_lock = LOCK_DONE;
			err = do_write_data_page(&fio);
			if (err) {
				if (err == -ENOMEM) {
					congestion_wait(BLK_RW_ASYNC, HZ/50);
					cond_resched();
					goto retry;
				}
				unlock_page(page);
				break;
			}
			/* record old blkaddr for revoking */
			cur->old_addr = fio.old_blkaddr;
			last_idx = page->index;
		}
		unlock_page(page);
		list_move_tail(&cur->list, revoke_list);
	}

	if (last_idx != ULONG_MAX)
		f2fs_submit_merged_write_cond(sbi, inode, 0, last_idx, DATA);

	if (!err)
		__revoke_inmem_pages(inode, revoke_list, false, false);

	return err;
}

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.