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    Subject[PATCH 23/31] kasan, arm64: allow KASAN_VMALLOC with SW_TAGS
    Date
    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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