From c797bf446e6f1a88e0a575501ab5d6b0f1d1ca8d Mon Sep 17 00:00:00 2001
From: Yao Yue <yao@twitter.com>
Date: Mon, 25 Jun 2018 12:35:10 -0700
Subject: [PATCH] add condition to check for null pointer in rsp recycling

---
 src/protocol/data/memcache/response.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/protocol/data/memcache/response.c b/src/protocol/data/memcache/response.c
index e4dd16efc..a698b49a0 100644
--- a/src/protocol/data/memcache/response.c
+++ b/src/protocol/data/memcache/response.c
@@ -163,6 +163,10 @@ response_return_all(struct response **response)
 
     struct response *nr, *rsp = *response;
 
+    if (rsp == NULL) {
+        return;
+    }
+
     nr = STAILQ_NEXT(rsp, next);
     while (rsp != NULL) {
         nr = STAILQ_NEXT(rsp, next);