static int sched_open(struct inode *inode, struct file *filp)
{
	int ret;

	ret = single_open(filp, sched_show, NULL);
	if (!ret) {
		struct seq_file *m = filp->private_data;

		m->private = inode;
	}
	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.