bridge: multicast flood
Fix unsafe usage of RCU. Would never work on Alpha SMP because
of lack of rcu_dereference()
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 7a241c3..5b70fc0 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -216,7 +216,7 @@
prev = NULL;
- rp = br->router_list.first;
+ rp = rcu_dereference(br->router_list.first);
p = mdst ? mdst->ports : NULL;
while (p || rp) {
lport = p ? p->port : NULL;
@@ -233,7 +233,7 @@
if ((unsigned long)lport >= (unsigned long)port)
p = p->next;
if ((unsigned long)rport >= (unsigned long)port)
- rp = rp->next;
+ rp = rcu_dereference(rp->next);
}
if (!prev)