From: pablo@netfilter.org
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 6/8] ipvs: take care of return value from protocol init_netns
Date: Mon, 30 Apr 2012 17:16:53 +0200 [thread overview]
Message-ID: <1335799015-2003-7-git-send-email-pablo@netfilter.org> (raw)
In-Reply-To: <1335799015-2003-1-git-send-email-pablo@netfilter.org>
From: Hans Schillstrom <hans.schillstrom@ericsson.com>
ip_vs_create_timeout_table() can return NULL
All functions protocol init_netns is affected of this patch.
Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
---
include/net/ip_vs.h | 2 +-
net/netfilter/ipvs/ip_vs_proto.c | 11 +++++++++--
net/netfilter/ipvs/ip_vs_proto_sctp.c | 5 ++++-
net/netfilter/ipvs/ip_vs_proto_tcp.c | 5 ++++-
net/netfilter/ipvs/ip_vs_proto_udp.c | 5 ++++-
5 files changed, 22 insertions(+), 6 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 2bdee51..6d90dda 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -393,7 +393,7 @@ struct ip_vs_protocol {
void (*exit)(struct ip_vs_protocol *pp);
- void (*init_netns)(struct net *net, struct ip_vs_proto_data *pd);
+ int (*init_netns)(struct net *net, struct ip_vs_proto_data *pd);
void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd);
diff --git a/net/netfilter/ipvs/ip_vs_proto.c b/net/netfilter/ipvs/ip_vs_proto.c
index a62360e..ed835e6 100644
--- a/net/netfilter/ipvs/ip_vs_proto.c
+++ b/net/netfilter/ipvs/ip_vs_proto.c
@@ -78,8 +78,15 @@ register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp)
ipvs->proto_data_table[hash] = pd;
atomic_set(&pd->appcnt, 0); /* Init app counter */
- if (pp->init_netns != NULL)
- pp->init_netns(net, pd);
+ if (pp->init_netns != NULL) {
+ int ret = pp->init_netns(net, pd);
+ if (ret) {
+ /* unlink an free proto data */
+ ipvs->proto_data_table[hash] = pd->next;
+ kfree(pd);
+ return ret;
+ }
+ }
return 0;
}
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 1fbf7a2..9f3fb75 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -1090,7 +1090,7 @@ out:
* timeouts is netns related now.
* ---------------------------------------------
*/
-static void __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd)
+static int __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd)
{
struct netns_ipvs *ipvs = net_ipvs(net);
@@ -1098,6 +1098,9 @@ static void __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd)
spin_lock_init(&ipvs->sctp_app_lock);
pd->timeout_table = ip_vs_create_timeout_table((int *)sctp_timeouts,
sizeof(sctp_timeouts));
+ if (!pd->timeout_table)
+ return -ENOMEM;
+ return 0;
}
static void __ip_vs_sctp_exit(struct net *net, struct ip_vs_proto_data *pd)
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index ef8641f..cd609cc 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -677,7 +677,7 @@ void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp)
* timeouts is netns related now.
* ---------------------------------------------
*/
-static void __ip_vs_tcp_init(struct net *net, struct ip_vs_proto_data *pd)
+static int __ip_vs_tcp_init(struct net *net, struct ip_vs_proto_data *pd)
{
struct netns_ipvs *ipvs = net_ipvs(net);
@@ -685,7 +685,10 @@ static void __ip_vs_tcp_init(struct net *net, struct ip_vs_proto_data *pd)
spin_lock_init(&ipvs->tcp_app_lock);
pd->timeout_table = ip_vs_create_timeout_table((int *)tcp_timeouts,
sizeof(tcp_timeouts));
+ if (!pd->timeout_table)
+ return -ENOMEM;
pd->tcp_state_table = tcp_states;
+ return 0;
}
static void __ip_vs_tcp_exit(struct net *net, struct ip_vs_proto_data *pd)
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c
index f4b7262..2fedb2d 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -467,7 +467,7 @@ udp_state_transition(struct ip_vs_conn *cp, int direction,
cp->timeout = pd->timeout_table[IP_VS_UDP_S_NORMAL];
}
-static void __udp_init(struct net *net, struct ip_vs_proto_data *pd)
+static int __udp_init(struct net *net, struct ip_vs_proto_data *pd)
{
struct netns_ipvs *ipvs = net_ipvs(net);
@@ -475,6 +475,9 @@ static void __udp_init(struct net *net, struct ip_vs_proto_data *pd)
spin_lock_init(&ipvs->udp_app_lock);
pd->timeout_table = ip_vs_create_timeout_table((int *)udp_timeouts,
sizeof(udp_timeouts));
+ if (!pd->timeout_table)
+ return -ENOMEM;
+ return 0;
}
static void __udp_exit(struct net *net, struct ip_vs_proto_data *pd)
--
1.7.9.5
next prev parent reply other threads:[~2012-04-30 15:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-30 15:16 [PATCH 0/8] netfilter updates for 3.4-rc5 pablo
2012-04-30 15:16 ` [PATCH 1/8] ipvs: Verify that IP_VS protocol has been registered pablo
2012-04-30 15:16 ` [PATCH 2/8] ipvs: fix crash in ip_vs_control_net_cleanup on unload pablo
2012-04-30 15:16 ` [PATCH 3/8] ipvs: add check in ftp for initialized core pablo
2012-04-30 15:16 ` [PATCH 4/8] ipvs: reset ipvs pointer in netns pablo
2012-04-30 15:16 ` [PATCH 5/8] ipvs: null check of net->ipvs in lblc(r) shedulers pablo
2012-04-30 15:16 ` pablo [this message]
2012-04-30 15:16 ` [PATCH 7/8] ipvs: kernel oops - do_ip_vs_get_ctl pablo
2012-04-30 15:16 ` [PATCH 8/8] netfilter: xt_CT: fix wrong checking in the timeout assignment path pablo
2012-04-30 17:23 ` [PATCH 0/8] netfilter updates for 3.4-rc5 David Miller
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