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-rw-r--r--net/core/neighbour.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 43449649cf73..909ecb3c2a33 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1168,10 +1168,14 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n2, *n1 = neigh;
write_unlock_bh(&neigh->lock);
+
+ rcu_read_lock();
/* On shaper/eql skb->dst->neighbour != neigh :( */
if (dst && (n2 = dst_get_neighbour(dst)) != NULL)
n1 = n2;
n1->output(n1, skb);
+ rcu_read_unlock();
+
write_lock_bh(&neigh->lock);
}
skb_queue_purge(&neigh->arp_queue);