diff --git a/deps/rust-sgx-sdk.patch b/deps/rust-sgx-sdk.patch
index da1a036e..d505648a 100644
--- a/deps/rust-sgx-sdk.patch
+++ b/deps/rust-sgx-sdk.patch
@@ -1,7 +1,7 @@
-From ba4147e76c7cfe17f843b7b28bf535d04bc5db77 Mon Sep 17 00:00:00 2001
+From ebd4f84dd2561d5ef381312ef9934a6076e62915 Mon Sep 17 00:00:00 2001
 From: "Tate, Hongliang Tian" <tate.thl@antfin.com>
 Date: Wed, 3 Jun 2020 08:11:35 +0000
-Subject: [PATCH 1/3] Add support for integrity-only SGX files
+Subject: [PATCH 1/4] Add support for integrity-only SGX files
 
 ---
  samplecode/unit-test/enclave/src/lib.rs       |  2 +
@@ -374,10 +374,10 @@ index 3c2db3a4..f96cd9e8 100644
 2.17.1
 
 
-From 982897c432dd98c6d63691ddb238acd29db4233f Mon Sep 17 00:00:00 2001
+From b126b99cd8cf12ac4971915d408d48a557bc5399 Mon Sep 17 00:00:00 2001
 From: "Tate, Hongliang Tian" <tate.thl@antfin.com>
 Date: Wed, 3 Jun 2020 08:35:53 +0000
-Subject: [PATCH 2/3] Add data structures for #PF and #GP exceptions
+Subject: [PATCH 2/4] Add data structures for #PF and #GP exceptions
 
 ---
  sgx_types/src/types.rs | 11 +++++++++++
@@ -421,10 +421,10 @@ index 4f191364..651d088e 100644
 2.17.1
 
 
-From 43b32d82c09a796fd52b954dc0217ac9ce01c559 Mon Sep 17 00:00:00 2001
+From 3b224780e7f948753ef27e67677a5fc6a2a49961 Mon Sep 17 00:00:00 2001
 From: "Tate, Hongliang Tian" <tate.thl@antfin.com>
 Date: Wed, 3 Jun 2020 08:37:47 +0000
-Subject: [PATCH 3/3] Add a new exception type: simulated
+Subject: [PATCH 3/4] Add a new exception type: simulated
 
 ---
  sgx_types/src/types.rs | 1 +
@@ -445,3 +445,28 @@ index 651d088e..ef43d7d6 100644
 -- 
 2.17.1
 
+
+From 53707096d65d2c2439246274328484094be28c05 Mon Sep 17 00:00:00 2001
+From: volcano <volcano_dr@163.com>
+Date: Mon, 31 Aug 2020 11:12:44 +0800
+Subject: [PATCH 4/4] fix no return value of u_malloc_ocall
+
+---
+ sgx_ustdc/mem.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sgx_ustdc/mem.c b/sgx_ustdc/mem.c
+index 3dceb037..5e4aea84 100644
+--- a/sgx_ustdc/mem.c
++++ b/sgx_ustdc/mem.c
+@@ -26,6 +26,7 @@ void *u_malloc_ocall(int *error, size_t size)
+     if (error) {
+         *error = ret == NULL ? errno : 0;
+     }
++    return ret;
+ }
+ 
+ void u_free_ocall(void *p)
+-- 
+2.17.1
+