ubsan: remove CONFIG_UBSAN_OBJECT_SIZE
authorKees Cook <keescook@chromium.org>
Thu, 20 Jan 2022 02:10:35 +0000 (18:10 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 20 Jan 2022 06:52:55 +0000 (08:52 +0200)
commit69d0db01e210e07fe915e5da91b54a867cda040f
tree50f6773063f4c3e11913a0097edf3c2beaadd3c7
parentbece04b5b41dd7730dd06aec0d6b15c53d1fbb5a
ubsan: remove CONFIG_UBSAN_OBJECT_SIZE

The object-size sanitizer is redundant to -Warray-bounds, and
inappropriately performs its checks at run-time when all information
needed for the evaluation is available at compile-time, making it quite
difficult to use:

  https://bugzilla.kernel.org/show_bug.cgi?id=214861

With -Warray-bounds almost enabled globally, it doesn't make sense to
keep this around.

Link: https://lkml.kernel.org/r/20211203235346.110809-1-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: 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: Nathan Chancellor <nathan@kernel.org>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/Kconfig.ubsan
lib/test_ubsan.c
scripts/Makefile.ubsan