android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

UPSTREAM: ubsan: disable object-size sanitizer under GCC

Browse Source 
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>

Bug: 199373673
(cherry picked from commit 61e0349f703d1576a12f88c15f25e0a56fd277af)
Signed-off-by: Yee Lee <yee.lee@mediatek.com>
Change-Id: If7f5ecfe7a8bc47ff9a8300026bf2a0744cd7507
This commit is contained in:
Kees Cook 2020-12-15 20:46:28 -08:00 committed by Todd Kjos
parent 9ecd3c915d
commit c108d79a12
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/Kconfig.ubsan
View File

@ -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