From 8a494023b80e29bb3638be18a6710a1c884ee68e Mon Sep 17 00:00:00 2001 From: Andrey Konovalov Date: Tue, 22 Dec 2020 12:02:03 -0800 Subject: kasan, x86, s390: update undef CONFIG_KASAN With the intoduction of hardware tag-based KASAN some kernel checks of this kind: ifdef CONFIG_KASAN will be updated to: if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) x86 and s390 use a trick to #undef CONFIG_KASAN for some of the code that isn't linked with KASAN runtime and shouldn't have any KASAN annotations. Also #undef CONFIG_KASAN_GENERIC with CONFIG_KASAN. Link: https://lkml.kernel.org/r/9d84bfaaf8fabe0fc89f913c9e420a30bd31a260.1606161801.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Signed-off-by: Vincenzo Frascino Reviewed-by: Marco Elver Acked-by: Vasily Gorbik Reviewed-by: Alexander Potapenko Tested-by: Vincenzo Frascino Cc: Andrey Ryabinin Cc: Branislav Rankov Cc: Catalin Marinas Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Kevin Brodsky Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/s390/boot/string.c | 1 + arch/x86/boot/compressed/misc.h | 1 + 2 files changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/s390/boot/string.c b/arch/s390/boot/string.c index b11e8108773a..faccb33b462c 100644 --- a/arch/s390/boot/string.c +++ b/arch/s390/boot/string.c @@ -3,6 +3,7 @@ #include #include #undef CONFIG_KASAN +#undef CONFIG_KASAN_GENERIC #include "../lib/string.c" int strncmp(const char *cs, const char *ct, size_t count) diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index d9a631c5973c..901ea5ebec22 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -12,6 +12,7 @@ #undef CONFIG_PARAVIRT_XXL #undef CONFIG_PARAVIRT_SPINLOCKS #undef CONFIG_KASAN +#undef CONFIG_KASAN_GENERIC /* cpu_feature_enabled() cannot be used this early */ #define USE_EARLY_PGTABLE_L5 -- cgit v1.2.3