diff --git a/include/net/route.h b/include/net/route.h index af8431b25f80059ef56204ca2ca0e5e26ae226b4..f396176022377722ccd06a17b3d8a7eabdae7f0d 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -362,10 +362,15 @@ static inline int inet_iif(const struct sk_buff *skb) static inline int ip4_dst_hoplimit(const struct dst_entry *dst) { int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT); - struct net *net = dev_net(dst->dev); - if (hoplimit == 0) + if (hoplimit == 0) { + const struct net *net; + + rcu_read_lock(); + net = dev_net_rcu(dst->dev); hoplimit = READ_ONCE(net->ipv4.sysctl_ip_default_ttl); + rcu_read_unlock(); + } return hoplimit; }