diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 866746695712..6526fda8f9c0 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -321,11 +321,14 @@ static int dst_fetch_ha(const struct dst_entry *dst,
 	if (!n)
 		return -ENODATA;
 
+	read_lock_bh(&n->lock);
 	if (!(n->nud_state & NUD_VALID)) {
+		read_unlock_bh(&n->lock);
 		neigh_event_send(n, NULL);
 		ret = -ENODATA;
 	} else {
 		neigh_ha_snapshot(dev_addr->dst_dev_addr, n, dst->dev);
+		read_unlock_bh(&n->lock);
 	}
 
 	neigh_release(n);