netfilter: nf_ct_sip: fix helper name

Commit 3a8fc53a (netfilter: nf_ct_helper: allocate 16 bytes for the helper
and policy names) introduced a bug in the SIP helper, the helper name is
sprinted to the sip_names array instead of instead of into the helper
structure. This breaks the helper match and the /proc/net/nf_conntrack_expect
output.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 758a1bacc126..2fb666920cc9 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1515,7 +1515,6 @@ static int sip_help_udp(struct sk_buff *skb, unsigned int protoff,
 }
 
 static struct nf_conntrack_helper sip[MAX_PORTS][4] __read_mostly;
-static char sip_names[MAX_PORTS][4][sizeof("sip-65535")] __read_mostly;
 
 static const struct nf_conntrack_expect_policy sip_exp_policy[SIP_EXPECT_MAX + 1] = {
         [SIP_EXPECT_SIGNALLING] = {
@@ -1585,9 +1584,9 @@ static int __init nf_conntrack_sip_init(void)
                         sip[i][j].me = THIS_MODULE;
 
                         if (ports[i] == SIP_PORT)
-                                sprintf(sip_names[i][j], "sip");
+                                sprintf(sip[i][j].name, "sip");
                         else
-                                sprintf(sip_names[i][j], "sip-%u", i);
+                                sprintf(sip[i][j].name, "sip-%u", i);
 
                         pr_debug("port #%u: %u\n", i, ports[i]);