1 files changed, 3 insertions, 1 deletions

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index d8d98655c9e7..705f02ac7433 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -1647,7 +1647,8 @@ static void __init rcu_init_one(struct rcu_state *rsp)
                 cpustride *= rsp->levelspread[i];
                 rnp = rsp->level[i];
                 for (j = 0; j < rsp->levelcnt[i]; j++, rnp++) {
-                        spin_lock_init(&rnp->lock);
+                        if (rnp != rcu_get_root(rsp))
+                                spin_lock_init(&rnp->lock);
                         rnp->gpnum = 0;
                         rnp->qsmask = 0;
                         rnp->qsmaskinit = 0;
@@ -1670,6 +1671,7 @@ static void __init rcu_init_one(struct rcu_state *rsp)
                         INIT_LIST_HEAD(&rnp->blocked_tasks[1]);
                 }
         }
+        spin_lock_init(&rcu_get_root(rsp)->lock);
 }
 
 /*