netfilter: nf_conntrack_sip: Allow ct_sip_get_header() to be called w…

…ith a null ct argument Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
git-mirror · Oct 4, 2010 · 5adbb9f · 5adbb9f
1 parent bc01bef
commit 5adbb9f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
@@ -152,6 +152,9 @@ static int parse_addr(const struct nf_conn *ct, const char *cp,
 	const char *end;
 	int ret = 0;
 
+	if (!ct)
+		return 0;
+
 	memset(addr, 0, sizeof(*addr));
 	switch (nf_ct_l3num(ct)) {
 	case AF_INET: