From e19680f8347ec0e335ae90801fbe42d85d7b385a Mon Sep 17 00:00:00 2001 From: Haishuang Yan Date: Mon, 30 Mar 2020 11:20:15 +0800 Subject: [PATCH] ipvs: fix uninitialized variable warning If outer_proto is not set, GCC warning as following: In file included from net/netfilter/ipvs/ip_vs_core.c:52: net/netfilter/ipvs/ip_vs_core.c: In function 'ip_vs_in_icmp': include/net/ip_vs.h:233:4: warning: 'outer_proto' may be used uninitialized in this function [-Wmaybe-uninitialized] 233 | printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \ | ^~~~~~ net/netfilter/ipvs/ip_vs_core.c:1666:8: note: 'outer_proto' was declared here 1666 | char *outer_proto; | ^~~~~~~~~~~ Fixes: 73348fed35d0 ("ipvs: optimize tunnel dumps for icmp errors") Signed-off-by: Haishuang Yan Acked-by: Julian Anastasov Signed-off-by: Pablo Neira Ayuso --- net/netfilter/ipvs/ip_vs_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index d2ac530a9501..aa6a603a2425 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1663,7 +1663,7 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related, unsigned int offset, offset2, ihl, verdict; bool tunnel, new_cp = false; union nf_inet_addr *raddr; - char *outer_proto; + char *outer_proto = "IPIP"; *related = 1; @@ -1723,7 +1723,6 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related, if (cih == NULL) return NF_ACCEPT; /* The packet looks wrong, ignore */ tunnel = true; - outer_proto = "IPIP"; } else if ((cih->protocol == IPPROTO_UDP || /* Can be UDP encap */ cih->protocol == IPPROTO_GRE) && /* Can be GRE encap */ /* Error for our tunnel must arrive at LOCAL_IN */ -- 2.20.1