static void smp_task_timedout(struct timer_list *t)
{
	struct sas_task_slow *slow = from_timer(slow, t, timer);
	struct sas_task *task = slow->task;
	unsigned long flags;

	spin_lock_irqsave(&task->task_state_lock, flags);
	if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
		task->task_state_flags |= SAS_TASK_STATE_ABORTED;
		complete(&task->slow_task->completion);
	}
	spin_unlock_irqrestore(&task->task_state_lock, flags);
}
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.