From: Kees Cook <keescook@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Masahiro Yamada <masahiroy@kernel.org>,
Michal Marek <michal.lkml@markovi.net>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Marco Elver <elver@google.com>,
Randy Dunlap <rdunlap@infradead.org>,
Dmitry Vyukov <dvyukov@google.com>,
George Popescu <georgepope@android.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
clang-built-linux@googlegroups.com, linux-kbuild@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 5/7] ubsan: Enable for all*config builds
Date: Wed, 2 Dec 2020 16:44:35 -0800 [thread overview]
Message-ID: <20201203004437.389959-6-keescook@chromium.org> (raw)
In-Reply-To: <20201203004437.389959-1-keescook@chromium.org>
With UBSAN_OBJECT_SIZE disabled for GCC, only UBSAN_ALIGNMENT remained
a noisy UBSAN option. Disable it for COMPILE_TEST so the rest of UBSAN
can be used for full all*config builds or other large combinations.
Link: https://lore.kernel.org/lkml/CAHk-=wgXW=YLxGN0QVpp-1w5GDd2pf1W-FqY15poKzoVfik2qA@mail.gmail.com/
Signed-off-by: Kees Cook <keescook@chromium.org>
---
lib/Kconfig.ubsan | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index 6e8b67d4b0d9..fa78f0f3c1dc 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -130,7 +130,6 @@ config UBSAN_ENUM
config UBSAN_SANITIZE_ALL
bool "Enable instrumentation for the entire kernel"
depends on ARCH_HAS_UBSAN_SANITIZE_ALL
- depends on !COMPILE_TEST
default y
help
This option activates instrumentation for the entire kernel.
@@ -142,7 +141,7 @@ config UBSAN_SANITIZE_ALL
config UBSAN_ALIGNMENT
bool "Enable checks for pointers alignment"
default !HAVE_EFFICIENT_UNALIGNED_ACCESS
- depends on !UBSAN_TRAP
+ depends on !UBSAN_TRAP && !COMPILE_TEST
depends on $(cc-option,-fsanitize=alignment)
help
This option enables the check of unaligned memory accesses.
--
2.25.1
next prev parent reply other threads:[~2020-12-03 0:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-03 0:44 [PATCH v2 0/7] Clean up UBSAN Makefile Kees Cook
2020-12-03 0:44 ` [PATCH v2 1/7] ubsan: Remove redundant -Wno-maybe-uninitialized Kees Cook
2020-12-03 0:44 ` [PATCH v2 2/7] ubsan: Move cc-option tests into Kconfig Kees Cook
2020-12-03 0:44 ` [PATCH v2 3/7] ubsan: Disable object-size sanitizer under GCC Kees Cook
2020-12-03 0:44 ` [PATCH v2 4/7] ubsan: Disable UBSAN_TRAP for all*config Kees Cook
2020-12-03 0:44 ` Kees Cook [this message]
2020-12-03 8:51 ` [PATCH v2 5/7] ubsan: Enable for all*config builds Arnd Bergmann
2020-12-05 0:46 ` Kees Cook
2020-12-09 18:46 ` Kees Cook
2020-12-09 19:25 ` Arnd Bergmann
2020-12-03 0:44 ` [PATCH v2 6/7] ubsan: Remove UBSAN_MISC in favor of individual options Kees Cook
2020-12-03 0:44 ` [PATCH v2 7/7] ubsan: Expand tests and reporting Kees Cook
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