From 8192af65ef5d3f5f0aa6cd56939fb36a7687653b Mon Sep 17 00:00:00 2001
From: Qu Xuan <quxuan@yunionyun.com>
Date: Thu, 3 Jun 2021 10:54:19 +0800
Subject: [PATCH] fix(host): avoid panic when params is nil

---
 pkg/hostman/guestman/guestman.go | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/pkg/hostman/guestman/guestman.go b/pkg/hostman/guestman/guestman.go
index 07842949dc..27cc48d4cd 100644
--- a/pkg/hostman/guestman/guestman.go
+++ b/pkg/hostman/guestman/guestman.go
@@ -689,12 +689,13 @@ func (m *SGuestManager) GuestStart(ctx context.Context, sid string, body jsonuti
 			guest.SaveDesc(desc)
 		}
 		if guest.IsStopped() {
-			var data *jsonutils.JSONDict
-			params, err := body.Get("params")
-			if err != nil {
-				data, _ = params.(*jsonutils.JSONDict)
+			data := struct {
+				Params *jsonutils.JSONDict
+			}{
+				Params: jsonutils.NewDict(),
 			}
-			guest.StartGuest(ctx, data)
+			body.Unmarshal(&data)
+			guest.StartGuest(ctx, data.Params)
 			res := jsonutils.NewDict()
 			res.Set("vnc_port", jsonutils.NewInt(0))
 			return res, nil