linux-kernel - [PATCH 6/9] kasan/um: call kasan_init_generic in kasan

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Message-Id: <20250625095224.118679-7-snovitoll@gmail.com>
Date: Wed, 25 Jun 2025 14:52:21 +0500
From: Sabyrzhan Tasbolatov <snovitoll@...il.com>
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Subject: [PATCH 6/9] kasan/um: call kasan_init_generic in kasan_init

Call kasan_init_generic() which enables the static flag
to mark generic KASAN initialized, otherwise it's an inline stub.

Delete the key `kasan_um_is_ready` in favor of the global static flag in
linux/kasan-enabled.h which is enabled with kasan_init_generic().

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218315
Signed-off-by: Sabyrzhan Tasbolatov <snovitoll@...il.com>
---
 arch/um/include/asm/kasan.h | 5 -----
 arch/um/kernel/mem.c        | 4 ++--
 2 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/um/include/asm/kasan.h b/arch/um/include/asm/kasan.h
index f97bb1f7b85..81bcdc0f962 100644
--- a/arch/um/include/asm/kasan.h
+++ b/arch/um/include/asm/kasan.h
@@ -24,11 +24,6 @@
 
 #ifdef CONFIG_KASAN
 void kasan_init(void);
-extern int kasan_um_is_ready;
-
-#ifdef CONFIG_STATIC_LINK
-#define kasan_arch_is_ready() (kasan_um_is_ready)
-#endif
 #else
 static inline void kasan_init(void) { }
 #endif /* CONFIG_KASAN */
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 76bec7de81b..2632269d530 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -21,9 +21,9 @@
 #include <os.h>
 #include <um_malloc.h>
 #include <linux/sched/task.h>
+#include <linux/kasan-enabled.h>
 
 #ifdef CONFIG_KASAN
-int kasan_um_is_ready;
 void kasan_init(void)
 {
 	/*
@@ -32,7 +32,7 @@ void kasan_init(void)
 	 */
 	kasan_map_memory((void *)KASAN_SHADOW_START, KASAN_SHADOW_SIZE);
 	init_task.kasan_depth = 0;
-	kasan_um_is_ready = true;
+	kasan_init_generic();
 }
 
 static void (*kasan_init_ptr)(void)
-- 
2.34.1