[PATCH] sched/deadline: fix double enqueue on dl_task_timer.

[Juri Lelli]

Signed-off-by: Juri Lelli <juri.lelli@xxxxxxx>
---
 kernel/sched/deadline.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 255ce13..d0beefa 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -520,10 +520,13 @@ again:
 	/*
 	 * We need to take care of a possible races here. In fact, the
 	 * task might have changed its scheduling policy to something
-	 * different from SCHED_DEADLINE or changed its reservation
-	 * parameters (through sched_setattr()).
+	 * different from SCHED_DEADLINE, changed its reservation
+	 * parameters (through sched_setattr()) or inherited priority
+	 * (and parameters) from someone else (in this last case it is
+	 * also outside of bandwidth enforcement, so we can safely bail
+	 * out).
 	 */
-	if (!dl_task(p) || dl_se->dl_new)
+	if (!dl_task(p) || dl_se->dl_new || dl_se->dl_boosted)
 		goto unlock;
 
 	sched_clock_tick();
-- 
2.1.0

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