nfsd: Fix a memory scribble in the callback channel

The offset of the entry in struct rpc_version has to match the version
number.

Reported-by: Dave Jones <davej@codemonkey.org.uk>
Fixes: 1c5876ddbdb4 ("sunrpc: move p_count out of struct rpc_procinfo")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index b45083c0f9ae..49b0a9e7ff18 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -720,8 +720,8 @@ static const struct rpc_version nfs_cb_version4 = {
         .counts                 = nfs4_cb_counts,
 };
 
-static const struct rpc_version *nfs_cb_version[] = {
-        &nfs_cb_version4,
+static const struct rpc_version *nfs_cb_version[2] = {
+        [1] = &nfs_cb_version4,
 };
 
 static const struct rpc_program cb_program;
@@ -795,7 +795,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
                 .saddress       = (struct sockaddr *) &conn->cb_saddr,
                 .timeout        = &timeparms,
                 .program        = &cb_program,
-                .version        = 0,
+                .version        = 1,
                 .flags          = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
         };
         struct rpc_clnt *client;