From 4302f5eeb95f78da6351a38cb170943651e8599a Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Mon, 5 Oct 2015 16:51:02 +0200
Subject: nfnetlink_cttimeout: add rcu_barrier() on module removal

Make sure kfree_rcu() released objects before leaving the module removal
exit path.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index 5bda647..c7a2d0e 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -612,6 +612,7 @@ static void __exit cttimeout_exit(void)
 	RCU_INIT_POINTER(nf_ct_timeout_find_get_hook, NULL);
 	RCU_INIT_POINTER(nf_ct_timeout_put_hook, NULL);
 #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
+	rcu_barrier();
 }
 
 module_init(cttimeout_init);
-- 
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