From: Luo Qiu <luoqiu@kylinsec.com.cn>
Date: Wed, 22 Apr 2026 07:45:12 +0000 (+0800)
Subject: LoongArch: Use get_random_canary() for stack canary init
X-Git-Tag: v7.1-rc1~28^2~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a28547576b3b3c95f2261cd5374c1e459f36d9dc;p=thirdparty%2Fkernel%2Flinux.git

LoongArch: Use get_random_canary() for stack canary init

Like others, replace the custom stack canary initialization with the
get_random_canary() helper, following the pattern established in commit
622754e84b10 ("stackprotector: actually use get_random_canary()").

Signed-off-by: Luo Qiu <luoqiu@kylinsec.com.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---

diff --git a/arch/loongarch/include/asm/stackprotector.h b/arch/loongarch/include/asm/stackprotector.h
index a1a965751a7b..42f6c3f69115 100644
--- a/arch/loongarch/include/asm/stackprotector.h
+++ b/arch/loongarch/include/asm/stackprotector.h
@@ -12,9 +12,6 @@
 #ifndef _ASM_STACKPROTECTOR_H
 #define _ASM_STACKPROTECTOR_H
 
-#include <linux/random.h>
-#include <linux/version.h>
-
 extern unsigned long __stack_chk_guard;
 
 /*
@@ -25,11 +22,7 @@ extern unsigned long __stack_chk_guard;
  */
 static __always_inline void boot_init_stack_canary(void)
 {
-	unsigned long canary;
-
-	/* Try to get a semi random initial value. */
-	get_random_bytes(&canary, sizeof(canary));
-	canary ^= LINUX_VERSION_CODE;
+	unsigned long canary = get_random_canary();
 
 	current->stack_canary = canary;
 	__stack_chk_guard = current->stack_canary;