1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index d145796bd61f..e0d98157fbea 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -2938,6 +2938,10 @@ static void __init rcu_init_one(struct rcu_state *rsp,
 
         BUILD_BUG_ON(MAX_RCU_LVLS > ARRAY_SIZE(buf));  /* Fix buf[] init! */
 
+        /* Silence gcc 4.8 warning about array index out of range. */
+        if (rcu_num_lvls > RCU_NUM_LVLS)
+                panic("rcu_init_one: rcu_num_lvls overflow");
+
         /* Initialize the level-tracking arrays. */
 
         for (i = 0; i < rcu_num_lvls; i++)