If CONFIG_IP_VS_IPV6 is not defined, then ip_vs_fill_iph_skb() does not
initialize all of the fields in struct ip_vs_iphdr. Silence the 'may be used
uninitialized' warning in the IPV4 only case by initializing the only field
that is unique to IPV6.
net/netfilter/ipvs/ip_vs_pe_sip.c: In function 'ip_vs_sip_fill_param':
net/netfilter/ipvs/ip_vs_pe_sip.c:87:11: warning: 'iph.thoff_reasm' may be used
uninitialized in this function [-Wuninitialized]
gcc version 4.6.3
Also update comment to correctly reference fragoffs.
Cc: Wensong Zhang <wens...@linux-vs.org>
Cc: Simon Horman <ho...@verge.net.au>
Cc: Julian Anastasov <j...@ssi.bg>
Cc: "David S. Miller" <da...@davemloft.net>
Cc: Alexey Kuznetsov <kuz...@ms2.inr.ac.ru>
Cc: James Morris <jmor...@namei.org>
Cc: Hideaki YOSHIFUJI <yoshf...@linux-ipv6.org>
Cc: Patrick McHardy <ka...@trash.net>
Cc: net...@vger.kernel.org
Cc: lvs-de...@vger.kernel.org
Signed-off-by: Tim Gardner <tim.gard...@canonical.com>
---
include/net/ip_vs.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 108ebe8..64ca32f 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -165,14 +165,16 @@ ip_vs_fill_ip4hdr(const void *nh, struct ip_vs_iphdr
*iphdr)
static inline void
ip_vs_fill_iph_skb(int af, const struct sk_buff *skb, struct ip_vs_iphdr
*iphdr)
{
+ /* May not get initialized in all cases */
+ iphdr->thoff_reasm = 0;
+
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
const struct ipv6hdr *iph =
(struct ipv6hdr *)skb_network_header(skb);
iphdr->saddr.in6 = iph->saddr;
iphdr->daddr.in6 = iph->daddr;
- /* ipv6_find_hdr() updates len, flags, thoff_reasm */
- iphdr->thoff_reasm = 0;
+ /* ipv6_find_hdr() updates len, flags, and fragoffs */
iphdr->len = 0;
iphdr->flags = 0;
iphdr->protocol = ipv6_find_hdr(skb, &iphdr->len, -1,
--
1.7.9.5
--
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