On Fri, Aug 14, 2020 at 07:27:01PM +0200, Andrey Konovalov wrote: > Software tag-based KASAN provides its own tag checking machinery that > can conflict with MTE. Don't allow enabling software tag-based KASAN > when MTE is enabled. > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > --- > lib/Kconfig.kasan | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > index b4cf6c519d71..e500c18cbe79 100644 > --- a/lib/Kconfig.kasan > +++ b/lib/Kconfig.kasan > @@ -69,6 +69,7 @@ config KASAN_GENERIC > config KASAN_SW_TAGS > bool "Software tag-based mode" > depends on HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS > + depends on !ARM64_MTE I think that's better as: diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 10cf81d70657..736c32bd8905 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -131,7 +131,7 @@ config ARM64 select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48) - select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN + select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN && !ARM64_MTE select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT -- Catalin
