NFSv4: handle nfs4_get_referral failure

nfs4_proc_lookup_common is supposed to return a posix error, we have to
handle any error returned that isn't errno

Reported-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 55e1e3af23a3d3f2313f977b185eb8c3f8ccbc6d..d689ea37be8484b5d38b10078528656b6352aa6e 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3355,6 +3355,8 @@ static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
                        goto out;
                case -NFS4ERR_MOVED:
                        err = nfs4_get_referral(client, dir, name, fattr, fhandle);
                        goto out;
                case -NFS4ERR_MOVED:
                        err = nfs4_get_referral(client, dir, name, fattr, fhandle);

+                       if (err == -NFS4ERR_MOVED)
+                               err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);

                        goto out;
                case -NFS4ERR_WRONGSEC:
                        err = -EPERM;
                        goto out;
                case -NFS4ERR_WRONGSEC:
                        err = -EPERM;