Merge branch 'sctp-process-the-error-returned-from-sctp_sock_migrate'

Xin Long says:

====================
sctp: process the error returned from sctp_sock_migrate()

This patchset is to process the errs returned by sctp_auth_init_hmacs()
and sctp_bind_addr_dup() from sctp_sock_migrate(). And also fix a panic
caused by new ep->auth_hmacs was not set due to net->sctp.auth_enable
changed by sysctl before accepting an assoc.
====================

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 8 deletions

diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 40c7eb941bc9..0448b68fce74 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -107,6 +107,13 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
 			auth_chunks->param_hdr.length =
 					htons(sizeof(struct sctp_paramhdr) + 2);
 		}
+
+		/* Allocate and initialize transorms arrays for supported
+		 * HMACs.
+		 */
+		err = sctp_auth_init_hmacs(ep, gfp);
+		if (err)
+			goto nomem;
 	}
 
 	/* Initialize the base structure. */
@@ -150,15 +157,10 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
 	INIT_LIST_HEAD(&ep->endpoint_shared_keys);
 	null_key = sctp_auth_shkey_create(0, gfp);
 	if (!null_key)
-		goto nomem;
+		goto nomem_shkey;
 
 	list_add(&null_key->key_list, &ep->endpoint_shared_keys);
 
-	/* Allocate and initialize transorms arrays for supported HMACs. */
-	err = sctp_auth_init_hmacs(ep, gfp);
-	if (err)
-		goto nomem_hmacs;
-
 	/* Add the null key to the endpoint shared keys list and
 	 * set the hmcas and chunks pointers.
 	 */
@@ -169,8 +171,8 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
 
 	return ep;
 
-nomem_hmacs:
-	sctp_auth_destroy_keys(&ep->endpoint_shared_keys);
+nomem_shkey:
+	sctp_auth_destroy_hmacs(ep->auth_hmacs);
 nomem:
 	/* Free all allocations */
 	kfree(auth_hmacs);