Better bug ons

1 files changed, 2 insertions, 0 deletions

diff --git a/litmus/sched_edf_hsb.c b/litmus/sched_edf_hsb.c
index 70a0ddd4ad5a..5fe546d156c0 100644
--- a/litmus/sched_edf_hsb.c
+++ b/litmus/sched_edf_hsb.c
@@ -171,6 +171,7 @@ static struct sched_plugin edf_hsb_plugin __cacheline_aligned_in_smp;
  */
 static inline int head_in_list(struct list_head *head)
 {
+        BUG_ON(!head);
         return !(head->next == head->prev && head->prev == head);
 }
 
@@ -858,6 +859,7 @@ static server_t* next_eligible_slack_server(void)
 
         while (!list_empty(&slack_queue)) {
                 next_slack = list_entry(slack_queue.next, server_t, list);
+                BUG_ON(!next_slack);
 
                 if (lt_after(next_slack->deadline, litmus_clock()) &&
                     lt_after(next_slack->budget, SLACK_MIN)) {