Merge branch 'linus' into core/iommu

1 files changed, 9 insertions, 7 deletions

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index b78e3be69013..c4986d0f7419 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -717,15 +717,20 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
 static int sctp_ctl_sock_init(void)
 {
         int err;
-        sa_family_t family;
+        sa_family_t family = PF_INET;
 
         if (sctp_get_pf_specific(PF_INET6))
                 family = PF_INET6;
-        else
-                family = PF_INET;
 
         err = inet_ctl_sock_create(&sctp_ctl_sock, family,
                                    SOCK_SEQPACKET, IPPROTO_SCTP, &init_net);
+
+        /* If IPv6 socket could not be created, try the IPv4 socket */
+        if (err < 0 && family == PF_INET6)
+                err = inet_ctl_sock_create(&sctp_ctl_sock, AF_INET,
+                                           SOCK_SEQPACKET, IPPROTO_SCTP,
+                                           &init_net);
+
         if (err < 0) {
                 printk(KERN_ERR
                        "SCTP: Failed to create the SCTP control socket.\n");
@@ -1322,9 +1327,8 @@ SCTP_STATIC __init int sctp_init(void)
 out:
         return status;
 err_v6_add_protocol:
-        sctp_v6_del_protocol();
-err_add_protocol:
         sctp_v4_del_protocol();
+err_add_protocol:
         inet_ctl_sock_destroy(sctp_ctl_sock);
 err_ctl_sock_init:
         sctp_v6_protosw_exit();
@@ -1335,7 +1339,6 @@ err_protosw_init:
         sctp_v4_pf_exit();
         sctp_v6_pf_exit();
         sctp_sysctl_unregister();
-        list_del(&sctp_af_inet.list);
         free_pages((unsigned long)sctp_port_hashtable,
                    get_order(sctp_port_hashsize *
                              sizeof(struct sctp_bind_hashbucket)));
@@ -1383,7 +1386,6 @@ SCTP_STATIC __exit void sctp_exit(void)
         sctp_v4_pf_exit();
 
         sctp_sysctl_unregister();
-        list_del(&sctp_af_inet.list);
 
         free_pages((unsigned long)sctp_assoc_hashtable,
                    get_order(sctp_assoc_hashsize *