From 33be34d8ec6d7a8272065a49c47673b49aef53c2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=B1=E5=A4=A9=E9=BE=99=20=28Armink=29?=
 <armink.ztl@gmail.com>
Date: Fri, 10 Jun 2022 12:26:01 +0800
Subject: [PATCH] [kservice] add NULL check for rt_free and rt_free_align.

---
 src/kservice.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/kservice.c b/src/kservice.c
index e8c53bd2ea..4e6dc22675 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -1551,6 +1551,8 @@ RT_WEAK void rt_free(void *rmem)
 
     /* call 'rt_free' hook */
     RT_OBJECT_HOOK_CALL(rt_free_hook, (rmem));
+    /* NULL check */
+    if (rmem == RT_NULL) return;
     /* Enter critical zone */
     level = _heap_lock();
     _MEM_FREE(rmem);
@@ -1672,6 +1674,8 @@ RT_WEAK void rt_free_align(void *ptr)
 {
     void *real_ptr;
 
+    /* NULL check */
+    if (ptr == RT_NULL) return;
     real_ptr = (void *) * (rt_ubase_t *)((rt_ubase_t)ptr - sizeof(void *));
     rt_free(real_ptr);
 }
-- 
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