Hi Lance, [auto build test WARNING on net/master]
url: https://github.com/0day-ci/linux/commits/Lance-Richardson/ipv4-allow-local-fragmentation-in-ip_finish_output_gso/20161103-040904 config: x86_64-randconfig-x014-201644 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): net/ipv4/ip_tunnel_core.c: In function 'iptunnel_xmit': >> net/ipv4/ip_tunnel_core.c:66:6: warning: unused variable 'skb_iif' >> [-Wunused-variable] int skb_iif = skb->skb_iif; ^~~~~~~ vim +/skb_iif +66 net/ipv4/ip_tunnel_core.c 0e6fbc5b6 Pravin B Shelar 2013-06-17 50 55c2bc143 Tom Herbert 2016-05-18 51 const struct ip_tunnel_encap_ops __rcu * 55c2bc143 Tom Herbert 2016-05-18 52 iptun_encaps[MAX_IPTUN_ENCAP_OPS] __read_mostly; 55c2bc143 Tom Herbert 2016-05-18 53 EXPORT_SYMBOL(iptun_encaps); 55c2bc143 Tom Herbert 2016-05-18 54 058214a4d Tom Herbert 2016-05-18 55 const struct ip6_tnl_encap_ops __rcu * 058214a4d Tom Herbert 2016-05-18 56 ip6tun_encaps[MAX_IPTUN_ENCAP_OPS] __read_mostly; 058214a4d Tom Herbert 2016-05-18 57 EXPORT_SYMBOL(ip6tun_encaps); 058214a4d Tom Herbert 2016-05-18 58 039f50629 Pravin B Shelar 2015-12-24 59 void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb, 0e6fbc5b6 Pravin B Shelar 2013-06-17 60 __be32 src, __be32 dst, __u8 proto, 963a88b31 Nicolas Dichtel 2013-09-02 61 __u8 tos, __u8 ttl, __be16 df, bool xnet) 0e6fbc5b6 Pravin B Shelar 2013-06-17 62 { bc22a0e2e Nicolas Dichtel 2015-09-18 63 int pkt_len = skb->len - skb_inner_network_offset(skb); f859b0f66 Eric W. Biederman 2015-10-07 64 struct net *net = dev_net(rt->dst.dev); 039f50629 Pravin B Shelar 2015-12-24 65 struct net_device *dev = skb->dev; b8247f095 Shmulik Ladkani 2016-07-18 @66 int skb_iif = skb->skb_iif; 0e6fbc5b6 Pravin B Shelar 2013-06-17 67 struct iphdr *iph; 0e6fbc5b6 Pravin B Shelar 2013-06-17 68 int err; 0e6fbc5b6 Pravin B Shelar 2013-06-17 69 963a88b31 Nicolas Dichtel 2013-09-02 70 skb_scrub_packet(skb, xnet); 963a88b31 Nicolas Dichtel 2013-09-02 71 bf8d85d4f Eric Dumazet 2016-09-08 72 skb_clear_hash_if_not_l4(skb); 0e6fbc5b6 Pravin B Shelar 2013-06-17 73 skb_dst_set(skb, &rt->dst); 0e6fbc5b6 Pravin B Shelar 2013-06-17 74 memset(IPCB(skb), 0, sizeof(*IPCB(skb))); :::::: The code at line 66 was first introduced by commit :::::: b8247f095eddfbfdba0fcecd1e3525a6cdb4b585 net: ip_finish_output_gso: If skb_gso_network_seglen exceeds MTU, allow segmentation for local udp tunneled skbs :::::: TO: Shmulik Ladkani <shmulik.ladk...@gmail.com> :::::: CC: David S. Miller <da...@davemloft.net> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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