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authorKees Cook <keescook@chromium.org>2020-12-15 20:46:20 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 22:46:18 -0800
commitd8a7f62b6eec198e85b8602e062c00e199f5c328 (patch)
treed3575723ada6384e39f012250c1b4e84bfc78a31 /lib/Kconfig.ubsan
parent3be8da570868a7989f1a0c11820ee1413877fa8c (diff)
downloadlinux-d8a7f62b6eec198e85b8602e062c00e199f5c328.tar.gz
ubsan: remove redundant -Wno-maybe-uninitialized
Patch series "Clean up UBSAN Makefile", v2.

This series attempts to address the issues seen with UBSAN's object-size
sanitizer causing problems under GCC.  In the process, the Kconfig and
Makefile are refactored to do all the cc-option calls in the Kconfig.
Additionally start to detangle -Wno-maybe-uninitialized, disable
UBSAN_TRAP under COMPILE_TEST for wider build coverage, and expand the
libusan tests.

This patch (of 7):

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.

Link: https://lkml.kernel.org/r/20201203004437.389959-1-keescook@chromium.org
Link: https://lkml.kernel.org/r/20201203004437.389959-2-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: George Popescu <georgepope@android.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/Kconfig.ubsan')
-rw-r--r--lib/Kconfig.ubsan4
1 files changed, 0 insertions, 4 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