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-rw-r--r--fs/nfs/callback.c3
1 files changed, 3 insertions, 0 deletions
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.