From 3260155ac784ae9f4889c6d3e40b85f33e94d098 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Fri, 27 Jul 2018 13:43:21 -0700 Subject: [PATCH] failover: change mtu has RTNL When changing MTU, RTNL is held so use rtnl_dereference instead of rcu_dereference. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/net_failover.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/net_failover.c b/drivers/net/net_failover.c index d00d42c845b7..7ae1856d1f18 100644 --- a/drivers/net/net_failover.c +++ b/drivers/net/net_failover.c @@ -220,14 +220,14 @@ static int net_failover_change_mtu(struct net_device *dev, int new_mtu) struct net_device *primary_dev, *standby_dev; int ret = 0; - primary_dev = rcu_dereference(nfo_info->primary_dev); + primary_dev = rtnl_dereference(nfo_info->primary_dev); if (primary_dev) { ret = dev_set_mtu(primary_dev, new_mtu); if (ret) return ret; } - standby_dev = rcu_dereference(nfo_info->standby_dev); + standby_dev = rtnl_dereference(nfo_info->standby_dev); if (standby_dev) { ret = dev_set_mtu(standby_dev, new_mtu); if (ret) {