[DECNET]: Fix RCU race condition in dn_neigh_construct().

Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index f32dba9..8d0cc3c 100644 (file)
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -148,12 +148,12 @@ static int dn_neigh_construct(struct neighbour *neigh)
 
        __neigh_parms_put(neigh->parms);
        neigh->parms = neigh_parms_clone(parms);
-       rcu_read_unlock();
 
        if (dn_db->use_long)
                neigh->ops = &dn_long_ops;
        else
                neigh->ops = &dn_short_ops;
+       rcu_read_unlock();
 
        if (dn->flags & DN_NDFLAG_P3)
                neigh->ops = &dn_phase3_ops;