1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index c358d4081b81..74cccfae87a8 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -2275,7 +2275,13 @@ unsigned long scale_rt_power(int cpu)
 	u64 total, available;
 
 	total = sched_avg_period() + (rq->clock - rq->age_stamp);
-	available = total - rq->rt_avg;
+
+	if (unlikely(total < rq->rt_avg)) {
+		/* Ensures that power won't end up being negative */
+		available = 0;
+	} else {
+		available = total - rq->rt_avg;
+	}
 
 	if (unlikely((s64)total < SCHED_LOAD_SCALE))
 		total = SCHED_LOAD_SCALE;