From 5d0ffdf44eb9b8d92eee17bf15abebd9d4bf588a Mon Sep 17 00:00:00 2001
From: yinshengkai <yinshengkai@xiaomi.com>
Date: Sat, 6 Jan 2024 21:03:39 +0800
Subject: [PATCH] mm: add disable kasan panic configuration

In some cases we hope to be able to find errors without affecting the running of the program

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
---
 mm/Kconfig       | 8 ++++++++
 mm/kasan/kasan.c | 9 +++++++++
 2 files changed, 17 insertions(+)

diff --git a/mm/Kconfig b/mm/Kconfig
index 42af2c5330..cfb2a5e539 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -301,6 +301,14 @@ config MM_KASAN_GLOBAL
 		KEEP ( *(. data. rel. local.. LASAN0))
 		}", used to extract data generated by the compiler
 
+config MM_KASAN_DISABLE_PANIC
+	bool "Disable panic on kasan error"
+	depends on MM_KASAN
+	default n
+	---help---
+		This option disable panic on kasan error. It will print error info
+		and continue to run.
+
 config MM_UBSAN
 	bool "Undefined Behavior Sanitizer"
 	default n
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c
index 566e3edb7e..d29d549275 100644
--- a/mm/kasan/kasan.c
+++ b/mm/kasan/kasan.c
@@ -26,6 +26,7 @@
 
 #include <assert.h>
 #include <debug.h>
+#include <execinfo.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -191,6 +192,9 @@ static void kasan_report(FAR const void *addr, size_t size,
                          FAR void *return_address)
 {
   static int recursion;
+  irqstate_t flags;
+
+  flags = enter_critical_section();
 
   if (++recursion == 1)
     {
@@ -200,10 +204,15 @@ static void kasan_report(FAR const void *addr, size_t size,
              addr, size, return_address);
 
       kasan_show_memory(addr, size, 80);
+#ifndef CONFIG_MM_KASAN_DISABLE_PANIC
       PANIC();
+#else
+      dump_stack();
+#endif
     }
 
   --recursion;
+  leave_critical_section(flags);
 }
 
 static bool kasan_is_poisoned(FAR const void *addr, size_t size)