Some #ifdef CONFIG_KASAN checks are only relevant for software KASAN
modes (either related to shadow memory or compiler instrumentation).
Expand those into CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS.
Signed-off-by: Andrey Konovalov
Signed-off-by: Vincenzo Frascino
---
Change-Id: I91e661e2c1627783cb845d877c6371dfc8779505
---
arch/arm64/Kconfig | 2 +-
arch/arm64/Makefile| 2 +-
arch/arm64/include/asm/assembler.h | 2 +-
arch/arm64/include/asm/memory.h| 2 +-
arch/arm64/include/asm/string.h| 5 +++--
arch/arm64/kernel/head.S | 2 +-
arch/arm64/kernel/image-vars.h | 2 +-
arch/arm64/kernel/kaslr.c | 3 ++-
arch/arm64/kernel/module.c | 6 --
arch/arm64/mm/ptdump.c | 6 +++---
include/linux/kasan-checks.h | 2 +-
include/linux/kasan.h | 7 ---
include/linux/moduleloader.h | 3 ++-
include/linux/string.h | 2 +-
mm/ptdump.c| 13 -
scripts/Makefile.lib | 2 ++
16 files changed, 36 insertions(+), 25 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index cebbd07ba27c..43702780f28c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -330,7 +330,7 @@ config BROKEN_GAS_INST
config KASAN_SHADOW_OFFSET
hex
- depends on KASAN
+ depends on KASAN_GENERIC || KASAN_SW_TAGS
default 0xdfffa000 if (ARM64_VA_BITS_48 || ARM64_VA_BITS_52) &&
!KASAN_SW_TAGS
default 0xdfffd000 if ARM64_VA_BITS_47 && !KASAN_SW_TAGS
default 0xde80 if ARM64_VA_BITS_42 && !KASAN_SW_TAGS
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 50ad9cbccb51..0b31a3f06f15 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -141,7 +141,7 @@ head-y := arch/arm64/kernel/head.o
ifeq ($(CONFIG_KASAN_SW_TAGS), y)
KASAN_SHADOW_SCALE_SHIFT := 4
-else
+else ifeq ($(CONFIG_KASAN_GENERIC), y)
KASAN_SHADOW_SCALE_SHIFT := 3
endif
diff --git a/arch/arm64/include/asm/assembler.h
b/arch/arm64/include/asm/assembler.h
index ddbe6bf00e33..bf125c591116 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -473,7 +473,7 @@ USER(\label, ic ivau, \tmp2)//
invalidate I line PoU
#define NOKPROBE(x)
#endif
-#ifdef CONFIG_KASAN
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
#define EXPORT_SYMBOL_NOKASAN(name)
#else
#define EXPORT_SYMBOL_NOKASAN(name)EXPORT_SYMBOL(name)
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 580d6ef17079..507012ed24f4 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -72,7 +72,7 @@
* address space for the shadow region respectively. They can bloat the stack
* significantly, so double the (minimum) stack size when they are in use.
*/
-#ifdef CONFIG_KASAN
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
#define KASAN_SHADOW_OFFSET_AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
#define KASAN_SHADOW_END ((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \
+ KASAN_SHADOW_OFFSET)
diff --git a/arch/arm64/include/asm/string.h b/arch/arm64/include/asm/string.h
index b31e8e87a0db..3a3264ff47b9 100644
--- a/arch/arm64/include/asm/string.h
+++ b/arch/arm64/include/asm/string.h
@@ -5,7 +5,7 @@
#ifndef __ASM_STRING_H
#define __ASM_STRING_H
-#ifndef CONFIG_KASAN
+#if !(defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS))
#define __HAVE_ARCH_STRRCHR
extern char *strrchr(const char *, int c);
@@ -48,7 +48,8 @@ extern void *__memset(void *, int, __kernel_size_t);
void memcpy_flushcache(void *dst, const void *src, size_t cnt);
#endif
-#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
+#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \
+ !defined(__SANITIZE_ADDRESS__)
/*
* For files that are not instrumented (e.g. mm/slub.c) we
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index d8d9caf02834..fdcb99d7ba23 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -448,7 +448,7 @@ SYM_FUNC_START_LOCAL(__primary_switched)
bl __pi_memset
dsb ishst // Make zero page visible to PTW
-#ifdef CONFIG_KASAN
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
bl kasan_early_init
#endif
#ifdef CONFIG_RANDOMIZE_BASE
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
index c615b285ff5b..4282edd2fe81 100644
--- a/arch/arm64/kernel/image-vars.h
+++ b/arch/arm64/kernel/image-vars.h
@@ -37,7 +37,7 @@ __efistub_strncmp = __pi_strncmp;
__efistub_strrchr = __pi_strrchr;
__efistub___clean_dcache_area_poc = __pi___clean_dcache_area_poc;
-#ifdef CONFIG_KASAN
+#if defined(CONFIG_KASAN_GENERIC) ||
