Skip to content

Commit

Permalink
ipvs: fix uninitialized variable warning
Browse files Browse the repository at this point in the history
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: 73348fe ("ipvs: optimize tunnel dumps for icmp errors")
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
  • Loading branch information
Haishuang Yan authored and Pablo Neira Ayuso committed Mar 30, 2020
1 parent 2e34328 commit e19680f
Showing 1 changed file with 1 addition and 2 deletions.
3 changes: 1 addition & 2 deletions net/netfilter/ipvs/ip_vs_core.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;

Expand Down Expand Up @@ -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 */
Expand Down

0 comments on commit e19680f

Please sign in to comment.