NFS check the return of nfs4_negotiate_security in nfs4_submount

Signed-off-by: Andy Adamson <andros@netapp.com>
Tested-By: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 3d5dbf80d46a..1b86fef0b828 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -399,8 +399,11 @@ struct vfsmount *nfs4_submount(struct nfs_server *server, struct dentry *dentry,
                 flavor = client->cl_auth->au_flavor;
         else {
                 rpc_authflavor_t new = nfs4_negotiate_security(dir, name);
-                if ((int)new >= 0)
-                        flavor = new;
+                if ((int)new < 0) {
+                        mnt = ERR_PTR((int)new);
+                        goto out;
+                }
+                flavor = new;
         }
         mnt = nfs_do_submount(dentry, fh, fattr, flavor);
 out: