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Date: Wed, 2 Dec 2020 16:44:31 -0800 From: Kees Cook <keescook@...omium.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Kees Cook <keescook@...omium.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Ard Biesheuvel <ardb@...nel.org>, Arnd Bergmann <arnd@...db.de>, Masahiro Yamada <masahiroy@...nel.org>, Michal Marek <michal.lkml@...kovi.net>, Nathan Chancellor <natechancellor@...il.com>, Nick Desaulniers <ndesaulniers@...gle.com>, Marco Elver <elver@...gle.com>, Randy Dunlap <rdunlap@...radead.org>, Dmitry Vyukov <dvyukov@...gle.com>, George Popescu <georgepope@...roid.com>, Herbert Xu <herbert@...dor.apana.org.au>, Peter Oberparleiter <oberpar@...ux.ibm.com>, Andrey Ryabinin <aryabinin@...tuozzo.com>, clang-built-linux@...glegroups.com, linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v2 1/7] ubsan: Remove redundant -Wno-maybe-uninitialized In commit 78a5255ffb6a ("Stop the ad-hoc games with -Wno-maybe-initialized") -Wmaybe-uninitialized was disabled globally, so keeping the disabling logic here too doesn't make sense. Signed-off-by: Kees Cook <keescook@...omium.org> --- lib/Kconfig.ubsan | 4 ---- scripts/Makefile.ubsan | 4 ---- 2 files changed, 8 deletions(-) diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 58f8d03d037b..d8d4d6557b80 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -72,10 +72,6 @@ config UBSAN_MISC config UBSAN_SANITIZE_ALL bool "Enable instrumentation for the entire kernel" depends on ARCH_HAS_UBSAN_SANITIZE_ALL - - # We build with -Wno-maybe-uninitilzed, but we still want to - # use -Wmaybe-uninitilized in allmodconfig builds. - # So dependsy bellow used to disable this option in allmodconfig depends on !COMPILE_TEST default y help diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan index 9716dab06bc7..c18fecc53605 100644 --- a/scripts/Makefile.ubsan +++ b/scripts/Makefile.ubsan @@ -31,7 +31,3 @@ endif ifdef CONFIG_UBSAN_TRAP CFLAGS_UBSAN += $(call cc-option, -fsanitize-undefined-trap-on-error) endif - - # -fsanitize=* options makes GCC less smart than usual and - # increase number of 'maybe-uninitialized false-positives - CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized) -- 2.25.1
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