diff --git a/drivers/misc/uid_cputime.c b/drivers/misc/uid_cputime.c
index 89bfba6c5b6a..012bd3505ed5 100644
--- a/drivers/misc/uid_cputime.c
+++ b/drivers/misc/uid_cputime.c
@@ -100,6 +100,11 @@ static int uid_stat_show(struct seq_file *m, void *v)
 				task_uid(task)));
 			return -ENOMEM;
 		}
+		/* if this task is exiting, we have already accounted for the
+		 * time and power.
+		 */
+		if (task->cpu_power == ULLONG_MAX)
+			continue;
 		task_cputime_adjusted(task, &utime, &stime);
 		uid_entry->active_utime += utime;
 		uid_entry->active_stime += stime;
@@ -211,6 +216,7 @@ static int process_notifier(struct notifier_block *self,
 	uid_entry->utime += utime;
 	uid_entry->stime += stime;
 	uid_entry->power += task->cpu_power;
+	task->cpu_power = ULLONG_MAX;
 
 exit:
 	mutex_unlock(&uid_lock);