static void __wait_one_discard_bio(struct f2fs_sb_info *sbi,
							struct discard_cmd *dc)
{
	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;

	wait_for_completion_io(&dc->wait);
	mutex_lock(&dcc->cmd_lock);
	f2fs_bug_on(sbi, dc->state != D_DONE);
	dc->ref--;
	if (!dc->ref)
		__remove_discard_cmd(sbi, dc);
	mutex_unlock(&dcc->cmd_lock);
}

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.