From: Simon Horman <horms@verge.net.au>
Date: Sun, 22 Aug 2010 12:37:51 +0000 (+0900)
Subject: netfilter: nf_conntrack_sip: Allow ct_sip_get_header() to be called with a null ct... 
X-Git-Tag: firefly_0821_release~7613^2~3670^2~3^2~40
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5adbb9fb0c35c38022f79e09fecf15ba8f65f069;p=firefly-linux-kernel-4.4.55.git

netfilter: nf_conntrack_sip: Allow ct_sip_get_header() to be called with a null ct argument

Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Julian Anastasov <ja@ssi.bg>
---

diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 53d892210a04..2fd1ea2c1bb3 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: