netdev - [v2 PATCH 1/2] ipvs: null check of net->ipvs in lblc(r) shedulers

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Message-ID: <1335426335-5093-2-git-send-email-hans.schillstrom@ericsson.com>
Date:	Thu, 26 Apr 2012 09:45:34 +0200
From:	Hans Schillstrom <hans.schillstrom@...csson.com>
To:	<horms@...ge.net.au>, <ja@....bg>, <wensong@...ux-vs.org>,
	<lvs-devel@...r.kernel.org>, <netdev@...r.kernel.org>,
	<netfilter-devel@...r.kernel.org>
CC:	<hans@...illstrom.com>,
	Hans Schillstrom <hans.schillstrom@...csson.com>
Subject: [v2 PATCH 1/2] ipvs: null check of net->ipvs in lblc(r) shedulers

Avoid crash when registering shedulers after
the IPVS core initialization for netns fails. Do this by
checking for present core (net->ipvs).

Ver 2 
	-

Signed-off-by: Hans Schillstrom <hans.schillstrom@...csson.com>
---
 net/netfilter/ipvs/ip_vs_lblc.c  |    3 +++
 net/netfilter/ipvs/ip_vs_lblcr.c |    3 +++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 222b6cb..df646cc 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -551,6 +551,9 @@ static int __net_init __ip_vs_lblc_init(struct net *net)
 {
 	struct netns_ipvs *ipvs = net_ipvs(net);
 
+	if (!ipvs)
+		return -ENOENT;
+
 	if (!net_eq(net, &init_net)) {
 		ipvs->lblc_ctl_table = kmemdup(vs_vars_table,
 						sizeof(vs_vars_table),
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 30c476f..570e31e 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -745,6 +745,9 @@ static int __net_init __ip_vs_lblcr_init(struct net *net)
 {
 	struct netns_ipvs *ipvs = net_ipvs(net);
 
+	if (!ipvs)
+		return -ENOENT;
+
 	if (!net_eq(net, &init_net)) {
 		ipvs->lblcr_ctl_table = kmemdup(vs_vars_table,
 						sizeof(vs_vars_table),
-- 
1.7.2.3

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