[merged] ubsan-disable-object-size-sanitizer-under-gcc.patch removed from -mm tree

[merged] ubsan-disable-object-size-sanitizer-under-gcc.patch removed from -mm tree

[akpm]

The patch titled
     Subject: ubsan: disable object-size sanitizer under GCC
has been removed from the -mm tree.  Its filename was
     ubsan-disable-object-size-sanitizer-under-gcc.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Kees Cook <keescook@chromium.org>
Subject: 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>
---

 lib/Kconfig.ubsan |    3 +++
 1 file changed, 3 insertions(+)

--- a/lib/Kconfig.ubsan~ubsan-disable-object-size-sanitizer-under-gcc
+++ a/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
_

Patches currently in -mm which might be from keescook@chromium.org are