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| author | Kees Cook <keescook@chromium.org> | 2020-12-16 05:46:28 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 07:46:18 +0100 |
| commit | 61e0349f703d1576a12f88c15f25e0a56fd277af (patch) | |
| tree | 8f658a6d8b50777499b621ac87664d60c3faa294 /lib/Kconfig.ubsan | |
| parent | ubsan: move cc-option tests into Kconfig (diff) | |
| download | linux-61e0349f703d1576a12f88c15f25e0a56fd277af.tar.xz linux-61e0349f703d1576a12f88c15f25e0a56fd277af.zip | |
ubsan: disable object-size sanitizer under GCC
GCC's -fsanitize=object-size (as part of CONFIG_UBSAN_MISC) greatly
increases stack utilization. Do not allow this under GCC.
Link: https://lkml.kernel.org/r/20201203004437.389959-4-keescook@chromium.org
Link: https://lore.kernel.org/lkml/CAHk-=wjPasyJrDuwDnpHJS2TuQfExwe=px-SzLeN8GFMAQJPmQ@mail.gmail.com/
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: George Popescu <georgepope@android.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Marco Elver <elver@google.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | lib/Kconfig.ubsan | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 05147112b355..4190a99b1eaa 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -113,6 +113,9 @@ config UBSAN_UNSIGNED_OVERFLOW config UBSAN_OBJECT_SIZE def_bool UBSAN_MISC + # gcc hugely expands stack usage with -fsanitize=object-size + # https://lore.kernel.org/lkml/CAHk-=wjPasyJrDuwDnpHJS2TuQfExwe=px-SzLeN8GFMAQJPmQ@mail.gmail.com/ + depends on !CC_IS_GCC depends on $(cc-option,-fsanitize=object-size) config UBSAN_BOOL |