NFS: Fix infinite loop in gss_create_upcall()

[firefly-linux-kernel-4.4.55.git] / net / sunrpc / auth_gss / auth_gss.c

diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index f3914d0c5079596d04af62417ca909693675a64f..339ba64cce1e2ee7134a2c9d09cd64f5fb9cb85e 100644 (file)
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -520,7 +520,7 @@ gss_refresh_upcall(struct rpc_task *task)
                warn_gssd();
                task->tk_timeout = 15*HZ;
                rpc_sleep_on(&pipe_version_rpc_waitqueue, task, NULL);
-               return 0;
+               return -EAGAIN;
        }
        if (IS_ERR(gss_msg)) {
                err = PTR_ERR(gss_msg);
@@ -563,10 +563,12 @@ retry:
        if (PTR_ERR(gss_msg) == -EAGAIN) {
                err = wait_event_interruptible_timeout(pipe_version_waitqueue,
                                pipe_version >= 0, 15*HZ);
+               if (pipe_version < 0) {
+                       warn_gssd();
+                       err = -EACCES;
+               }
                if (err)
                        goto out;
-               if (pipe_version < 0)
-                       warn_gssd();
                goto retry;
        }
        if (IS_ERR(gss_msg)) {