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 <yanhaishuang@xxxxxxxxxxxxxxxxxxxx>
---
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 d2ac530..aa6a603 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1663,7 +1663,7 @@ static int ipvs_gre_decap(struct netns_ipvs *ipvs, struct sk_buff *skb,
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 @@ static int ipvs_gre_decap(struct netns_ipvs *ipvs, struct sk_buff *skb,
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 */
--
1.8.3.1
