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Subject[PATCH 3.11 087/128] ipvs: stop tot_stats estimator only under CONFIG_SYSCTL
Date
3.11.10.14 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Julian Anastasov <ja@ssi.bg>

commit 9802d21e7a0b0d2167ef745edc1f4ea7a0fc6ea3 upstream.

The tot_stats estimator is started only when CONFIG_SYSCTL
is defined. But it is stopped without checking CONFIG_SYSCTL.
Fix the crash by moving ip_vs_stop_estimator into
ip_vs_control_net_cleanup_sysctl.

The change is needed after commit 14e405461e664b
("IPVS: Add __ip_vs_control_{init,cleanup}_sysctl()") from 2.6.39.

Reported-by: Jet Chen <jet.chen@intel.com>
Tested-by: Jet Chen <jet.chen@intel.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
net/netfilter/ipvs/ip_vs_ctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index c8148e487386..c9de95e8faa6 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -3781,6 +3781,7 @@ static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net)
cancel_delayed_work_sync(&ipvs->defense_work);
cancel_work_sync(&ipvs->defense_work.work);
unregister_net_sysctl_table(ipvs->sysctl_hdr);
+ ip_vs_stop_estimator(net, &ipvs->tot_stats);
}

#else
@@ -3841,7 +3842,6 @@ void __net_exit ip_vs_control_net_cleanup(struct net *net)
*/
rcu_barrier();
ip_vs_trash_cleanup(net);
- ip_vs_stop_estimator(net, &ipvs->tot_stats);
ip_vs_control_net_cleanup_sysctl(net);
remove_proc_entry("ip_vs_stats_percpu", net->proc_net);
remove_proc_entry("ip_vs_stats", net->proc_net);
--
1.9.1


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