[patch v5 01/12] netfilter: nf_conntrack_sip: Allow ct_sip_get_header() to be called with a null ct argument

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Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
Acked-by: Julian Anastasov <ja@xxxxxx>

diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 53d8922..2fd1ea2 100644
--- 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:
-- 
1.7.1


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