1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index de6d0774e609..c88b12beef25 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -1375,8 +1375,10 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
                 goto reject;
         }
         dst = &rt->dst;
+        rcu_read_lock();
         neigh = dst_get_neighbour(dst);
         l2t = t3_l2t_get(tdev, neigh, neigh->dev);
+        rcu_read_unlock();
         if (!l2t) {
                 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
                        __func__);
@@ -1946,10 +1948,12 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
         }
         ep->dst = &rt->dst;
 
+        rcu_read_lock();
         neigh = dst_get_neighbour(ep->dst);
 
         /* get a l2t entry */
         ep->l2t = t3_l2t_get(ep->com.tdev, neigh, neigh->dev);
+        rcu_read_unlock();
         if (!ep->l2t) {
                 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
                 err = -ENOMEM;