void stop_discard_thread(struct f2fs_sb_info *sbi)
{
	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;

	if (dcc && dcc->f2fs_issue_discard) {
		struct task_struct *discard_thread = dcc->f2fs_issue_discard;

		dcc->f2fs_issue_discard = NULL;
		kthread_stop(discard_thread);
	}
 }

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.