From 45ae555a0bd45e4ebbbdb6774f5757664ac1fafd Mon Sep 17 00:00:00 2001
From: David Lin <linpeng1577@gmail.com>
Date: Sat, 14 Mar 2020 23:11:37 +0800
Subject: [PATCH] [bsp]Fixed a  stack overflow bug in drv_crypto.c

Added if null before used.
---
 bsp/stm32/libraries/HAL_Drivers/drv_crypto.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_crypto.c b/bsp/stm32/libraries/HAL_Drivers/drv_crypto.c
index 85d8f1b1b7..795d3b499c 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_crypto.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_crypto.c
@@ -168,6 +168,11 @@ static rt_err_t _crypto_create(struct rt_hwcrypto_ctx *ctx)
     case HWCRYPTO_TYPE_RNG:
     {
         RNG_HandleTypeDef *hrng = rt_calloc(1, sizeof(RNG_HandleTypeDef));
+        if (RT_NULL == hrng)
+        {
+            res = -RT_ERROR;
+            break;
+        }
 
         hrng->Instance = RNG;
         HAL_RNG_Init(hrng);
-- 
GitLab