From ee930fffee469d076998274a2ca55e13dc1efb67 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:54 +0000
Subject: [PATCH] enable tun/tap/iptables

---
 kernel/arch/arm64/include/asm/kasan.h |   17 ++++++++---------
 1 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/kernel/arch/arm64/include/asm/kasan.h b/kernel/arch/arm64/include/asm/kasan.h
index b52aacd..12d5f47 100644
--- a/kernel/arch/arm64/include/asm/kasan.h
+++ b/kernel/arch/arm64/include/asm/kasan.h
@@ -6,23 +6,23 @@
 
 #include <linux/linkage.h>
 #include <asm/memory.h>
+#include <asm/mte-kasan.h>
 #include <asm/pgtable-types.h>
 
 #define arch_kasan_set_tag(addr, tag)	__tag_set(addr, tag)
 #define arch_kasan_reset_tag(addr)	__tag_reset(addr)
 #define arch_kasan_get_tag(addr)	__tag_get(addr)
 
-#ifdef CONFIG_KASAN
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
+
+void kasan_init(void);
 
 /*
  * KASAN_SHADOW_START: beginning of the kernel virtual addresses.
  * KASAN_SHADOW_END: KASAN_SHADOW_START + 1/N of kernel virtual addresses,
  * where N = (1 << KASAN_SHADOW_SCALE_SHIFT).
- */
-#define KASAN_SHADOW_START      (VA_START)
-#define KASAN_SHADOW_END        (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
-
-/*
+ *
+ * KASAN_SHADOW_OFFSET:
  * This value is used to map an address to the corresponding shadow
  * address by the following formula:
  *     shadow_addr = (address >> KASAN_SHADOW_SCALE_SHIFT) + KASAN_SHADOW_OFFSET
@@ -33,10 +33,9 @@
  *      KASAN_SHADOW_OFFSET = KASAN_SHADOW_END -
  *				(1ULL << (64 - KASAN_SHADOW_SCALE_SHIFT))
  */
-#define KASAN_SHADOW_OFFSET     (KASAN_SHADOW_END - (1ULL << \
-					(64 - KASAN_SHADOW_SCALE_SHIFT)))
+#define _KASAN_SHADOW_START(va)	(KASAN_SHADOW_END - (1UL << ((va) - KASAN_SHADOW_SCALE_SHIFT)))
+#define KASAN_SHADOW_START      _KASAN_SHADOW_START(vabits_actual)
 
-void kasan_init(void);
 void kasan_copy_shadow(pgd_t *pgdir);
 asmlinkage void kasan_early_init(void);
 

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