From 1fc19aff84edf97753c58cf4b858c6c4fdb246fa Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 9 May 2011 20:55:03 -0700 Subject: [PATCH] net: fix two lockdep splats Commit e67f88dd12f6 (net: dont hold rtnl mutex during netlink dump callbacks) switched rtnl protection to RCU, but we forgot to adjust two rcu_dereference() lockdep annotations : inet_get_link_af_size() or inet_fill_link_af() might be called with rcu_read_lock or rtnl held, so use rcu_dereference_rtnl() instead of rtnl_dereference() Reported-by: Valdis Kletnieks Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/devinet.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index cd9ca0811cfa..0d4a184af16f 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1369,7 +1369,7 @@ errout: static size_t inet_get_link_af_size(const struct net_device *dev) { - struct in_device *in_dev = __in_dev_get_rtnl(dev); + struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr); if (!in_dev) return 0; @@ -1379,7 +1379,7 @@ static size_t inet_get_link_af_size(const struct net_device *dev) static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev) { - struct in_device *in_dev = __in_dev_get_rtnl(dev); + struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr); struct nlattr *nla; int i; -- 2.20.1