From: Eric Dumazet Date: Tue, 10 May 2011 03:55:03 +0000 (-0700) Subject: net: fix two lockdep splats X-Git-Tag: v3.0~749^2~112 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1fc19aff84edf97753c58cf4b858c6c4fdb246fa;p=platform%2Fkernel%2Flinux-amlogic.git 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 --- diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index cd9ca08..0d4a184 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;