The patch titled
Subject: ubsan: enable for all*config builds
has been added to the -mm tree. Its filename is
ubsan-enable-for-allconfig-builds.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/ubsan-enable-for-allconfig-builds.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/ubsan-enable-for-allconfig-builds.patch
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------------------------------------------------------
From: Kees Cook <keescook@xxxxxxxxxxxx>
Subject: ubsan: enable for all*config builds
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@xxxxxxxxxxxxxx/
Link: https://lkml.kernel.org/r/20201203004437.389959-6-keescook@xxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Ard Biesheuvel <ardb@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: George Popescu <georgepope@xxxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Cc: Michal Marek <michal.lkml@xxxxxxxxxxx>
Cc: Nathan Chancellor <natechancellor@xxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Kconfig.ubsan | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/lib/Kconfig.ubsan~ubsan-enable-for-allconfig-builds
+++ a/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.
_
Patches currently in -mm which might be from keescook@xxxxxxxxxxxx are
ubsan-remove-redundant-wno-maybe-uninitialized.patch
ubsan-move-cc-option-tests-into-kconfig.patch
ubsan-disable-object-size-sanitizer-under-gcc.patch
ubsan-disable-ubsan_trap-for-allconfig.patch
ubsan-enable-for-allconfig-builds.patch
ubsan-remove-ubsan_misc-in-favor-of-individual-options.patch
ubsan-expand-tests-and-reporting.patch
