From: Andy Adamson <andros@netapp.com>
Date: Thu, 6 Jan 2011 02:04:33 +0000 (+0000)
Subject: NFS RPC_AUTH_GSS unsupported on v4.1 back channel
X-Git-Tag: firefly_0821_release~7613^2~3053^2~24
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ece0de633c4d9106c39ea9f0db1638c42ead2541;p=firefly-linux-kernel-4.4.55.git

NFS RPC_AUTH_GSS unsupported on v4.1 back channel

Signed-off-by: Andy Adamson <andros@netapp.com>
Acked-by: Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 15677e7bede5..753a9e315518 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -365,6 +365,9 @@ static int check_gss_callback_principal(struct nfs_client *clp,
 	struct rpc_clnt *r = clp->cl_rpcclient;
 	char *p = svc_gss_principal(rqstp);
 
+	/* No RPC_AUTH_GSS on NFSv4.1 back channel yet */
+	if (clp->cl_minorversion != 0)
+		return SVC_DROP;
 	/*
 	 * It might just be a normal user principal, in which case
 	 * userspace won't bother to tell us the name at all.