P-FP: prevent misuse of priority queue

Stop hard-to-detect out-of-bounds errors early.

1 files changed, 1 insertions, 1 deletions

diff --git a/include/litmus/fp_common.h b/include/litmus/fp_common.h
index dd1f7bf1e347..19356c0fa6c1 100644
--- a/include/litmus/fp_common.h
+++ b/include/litmus/fp_common.h
@@ -57,7 +57,7 @@ static inline unsigned int fpq_find(struct fp_prio_queue* q)
 
 static inline void fp_prio_add(struct fp_prio_queue* q, struct task_struct* t, unsigned int index)
 {
-
+        BUG_ON(index >= LITMUS_MAX_PRIORITY);
         BUG_ON(bheap_node_in_heap(tsk_rt(t)->heap_node));
 
         fpq_set(q, index);