[patch 14/26] {ip, nf}_conntrack_netlink: fix expectation notifier unregistration

[gregkh]

From: Martin Josefsson <gandalf@xxxxxxxxxxxxxx>

[NETFILTER]: {ip,nf}_conntrack_netlink: fix expectation notifier unregistration

This patch fixes expectation notifier unregistration on module unload to
use ip_conntrack_expect_unregister_notifier(). This bug causes a soft
lockup at the first expectation created after a rmmod ; insmod of this
module.

Should go into -stable as well.

Signed-off-by: Martin Josefsson <gandalf@xxxxxxxxxxxxxx>
Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
Signed-off-by: David Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 net/ipv4/netfilter/ip_conntrack_netlink.c |    2 +-
 net/netfilter/nf_conntrack_netlink.c      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.16.1.orig/net/ipv4/netfilter/ip_conntrack_netlink.c
+++ linux-2.6.16.1/net/ipv4/netfilter/ip_conntrack_netlink.c
@@ -1619,7 +1619,7 @@ static void __exit ctnetlink_exit(void)
 	printk("ctnetlink: unregistering from nfnetlink.\n");
 
 #ifdef CONFIG_IP_NF_CONNTRACK_EVENTS
-	ip_conntrack_unregister_notifier(&ctnl_notifier_exp);
+	ip_conntrack_expect_unregister_notifier(&ctnl_notifier_exp);
 	ip_conntrack_unregister_notifier(&ctnl_notifier);
 #endif
 
--- linux-2.6.16.1.orig/net/netfilter/nf_conntrack_netlink.c
+++ linux-2.6.16.1/net/netfilter/nf_conntrack_netlink.c
@@ -1641,7 +1641,7 @@ static void __exit ctnetlink_exit(void)
 	printk("ctnetlink: unregistering from nfnetlink.\n");
 
 #ifdef CONFIG_NF_CONNTRACK_EVENTS
-	nf_conntrack_unregister_notifier(&ctnl_notifier_exp);
+	nf_conntrack_expect_unregister_notifier(&ctnl_notifier_exp);
 	nf_conntrack_unregister_notifier(&ctnl_notifier);
 #endif
 

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