X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fnet%2Fcore%2Fneighbour.c;fp=kernel%2Fnet%2Fcore%2Fneighbour.c;h=769cece9b00b3829bdb3d56e707703c90c459a2e;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=f18ae91b652e971ccba5c03177301f1a46a8da57;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/net/core/neighbour.c b/kernel/net/core/neighbour.c
index f18ae91b6..769cece9b 100644
--- a/kernel/net/core/neighbour.c
+++ b/kernel/net/core/neighbour.c
@@ -2467,13 +2467,17 @@ int neigh_xmit(int index, struct net_device *dev,
 		tbl = neigh_tables[index];
 		if (!tbl)
 			goto out;
+		rcu_read_lock_bh();
 		neigh = __neigh_lookup_noref(tbl, addr, dev);
 		if (!neigh)
 			neigh = __neigh_create(tbl, addr, dev, false);
 		err = PTR_ERR(neigh);
-		if (IS_ERR(neigh))
+		if (IS_ERR(neigh)) {
+			rcu_read_unlock_bh();
 			goto out_kfree_skb;
+		}
 		err = neigh->output(neigh, skb);
+		rcu_read_unlock_bh();
 	}
 	else if (index == NEIGH_LINK_TABLE) {
 		err = dev_hard_header(skb, dev, ntohs(skb->protocol),