void exit_signals(struct task_struct *tsk)
{
	int group_stop = 0;
	sigset_t unblocked;

	/*
	 * @tsk is about to have PF_EXITING set - lock out users which
	 * expect stable threadgroup.
	 */
	cgroup_threadgroup_change_begin(tsk);

	if (thread_group_empty(tsk) || signal_group_exit(tsk->signal)) {
		tsk->flags |= PF_EXITING;
		cgroup_threadgroup_change_end(tsk);
		return;
	}

	spin_lock_irq(&tsk->sighand->siglock);
	/*
	 * From now this task is not visible for group-wide signals,
	 * see wants_signal(), do_signal_stop().
	 */
	tsk->flags |= PF_EXITING;

	cgroup_threadgroup_change_end(tsk);

	if (!signal_pending(tsk))
		goto out;

	unblocked = tsk->blocked;
	signotset(&unblocked);
	retarget_shared_pending(tsk, &unblocked);

	if (unlikely(tsk->jobctl & JOBCTL_STOP_PENDING) &&
	    task_participate_group_stop(tsk))
		group_stop = CLD_STOPPED;
out:
	spin_unlock_irq(&tsk->sighand->siglock);

	/*
	 * If group stop has completed, deliver the notification.  This
	 * should always go to the real parent of the group leader.
	 */
	if (unlikely(group_stop)) {
		read_lock(&tasklist_lock);
		do_notify_parent_cldstop(tsk, false, group_stop);
		read_unlock(&tasklist_lock);
	}
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.