[SCTP]: Fix inetaddr notifier chain corruption

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/ipv6.c

@@ -78,7 +78,10 @@
 
 #include <asm/uaccess.h>
 
-extern struct notifier_block sctp_inetaddr_notifier;
+extern int sctp_inetaddr_event(struct notifier_block *, unsigned long, void *);
+static struct notifier_block sctp_inet6addr_notifier = {
+	.notifier_call = sctp_inetaddr_event,
+};
 
 /* ICMP error handler. */
 void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
@@ -983,7 +986,7 @@ int sctp_v6_init(void)
 	sctp_register_af(&sctp_ipv6_specific);
 
 	/* Register notifier for inet6 address additions/deletions. */
-	register_inet6addr_notifier(&sctp_inetaddr_notifier);
+	register_inet6addr_notifier(&sctp_inet6addr_notifier);
 	rc = 0;
 out:
 	return rc;
@@ -999,6 +1002,6 @@ void sctp_v6_exit(void)
 	inet6_del_protocol(&sctpv6_protocol, IPPROTO_SCTP);
 	inet6_unregister_protosw(&sctpv6_seqpacket_protosw);
 	inet6_unregister_protosw(&sctpv6_stream_protosw);
-	unregister_inet6addr_notifier(&sctp_inetaddr_notifier);
+	unregister_inet6addr_notifier(&sctp_inet6addr_notifier);
 	sk_free_slab(&sctpv6_prot);
 }

net/sctp/protocol.c

@@ -622,7 +622,7 @@ static void sctp_v4_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr)
 /* Event handler for inet address addition/deletion events.
  * Basically, whenever there is an event, we re-build our local address list.
  */
-static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
+int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
                         void *ptr)
 {
 	unsigned long flags;
@@ -824,7 +824,7 @@ static struct sctp_pf sctp_pf_inet = {
 };
 
 /* Notifier for inetaddr addition/deletion events.  */
-struct notifier_block sctp_inetaddr_notifier = {
+static struct notifier_block sctp_inetaddr_notifier = {
 	.notifier_call = sctp_inetaddr_event,
 };