From 496e44db7f9d52e00ad7e3deee3408e555fcb76e Mon Sep 17 00:00:00 2001
From: yinshengkai <yinshengkai@xiaomi.com>
Date: Thu, 6 Jun 2024 17:06:36 +0800
Subject: [PATCH] mm: kasan supports checking 0 address access

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
---
 mm/kasan/hook.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mm/kasan/hook.c b/mm/kasan/hook.c
index 2ed8b34cb6..946257283d 100644
--- a/mm/kasan/hook.c
+++ b/mm/kasan/hook.c
@@ -173,6 +173,11 @@ static inline void kasan_check_report(FAR const void *addr, size_t size,
       return;
     }
 
+  if (addr == NULL)
+    {
+      kasan_report(addr, size, is_write, return_address);
+    }
+
   if (kasan_is_poisoned(addr, size))
     {
       kasan_report(addr, size, is_write, return_address);