1 files changed, 1 insertions, 0 deletions

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 9a2f8e41a26e..87e48a4e1051 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -179,6 +179,7 @@ requeue:
                 netif_schedule(dev);
                 return 1;
         }
+        BUG_ON((int) q->q.qlen < 0);
         return q->q.qlen;
 }