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List: linux-arm-kernel
Subject: [PATCH 23/31] kasan, arm64: allow KASAN_VMALLOC with SW_TAGS
From: andrey.konovalov () linux ! dev
Date: 2021-11-30 22:07:51
Message-ID: f90dfb0c02598aab3ad1b5b6ea4a4104b14e099d.1638308023.git.andreyknvl () google ! com
[Download RAW message or body]
From: Andrey Konovalov <andreyknvl@google.com>
vmalloc support for SW_TAGS KASAN is now complete.
Allow enabling CONFIG_KASAN_VMALLOC.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
arch/arm64/Kconfig | 1 +
lib/Kconfig.kasan | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index c4207cf9bb17..c05d7a06276f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -206,6 +206,7 @@ config ARM64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
select KASAN_VMALLOC if KASAN_GENERIC
+ select KASAN_VMALLOC if KASAN_SW_TAGS
select MODULES_USE_ELF_RELA
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index cdc842d090db..3f144a87f8a3 100644
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -179,7 +179,7 @@ config KASAN_TAGS_IDENTIFY
config KASAN_VMALLOC
bool "Back mappings in vmalloc space with real shadow memory"
- depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC
+ depends on (KASAN_GENERIC || KASAN_SW_TAGS) && HAVE_ARCH_KASAN_VMALLOC
help
By default, the shadow region for vmalloc space is the read-only
zero page. This means that KASAN cannot detect errors involving
--
2.25.1
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