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Date: Mon, 16 May 2022 14:35:45 -0700 From: Nick Desaulniers <ndesaulniers@...gle.com> To: Kees Cook <keescook@...omium.org>, Nathan Chancellor <nathan@...nel.org> Cc: kernel test robot <lkp@...el.com>, Rasmus Villemoes <linux@...musvillemoes.dk>, Vitor Massaru Iha <vitor@...saru.org>, "Gustavo A. R. Silva" <gustavoars@...nel.org>, Daniel Latypov <dlatypov@...gle.com>, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH] lib: overflow: Always build 64-bit test cases On Wed, May 11, 2022 at 10:45 AM Kees Cook <keescook@...omium.org> wrote: > > There shouldn't be a reason to not build the 64-bit test cases on 32-bit > systems; the types exist there too. Remove the #ifdefs. I think this is breaking 32b ARM for clang-13 and older? https://github.com/ClangBuiltLinux/linux/issues/1636 > > Reported-by: kernel test robot <lkp@...el.com> > Link: https://lore.kernel.org/lkml/202205110324.7GrtxG8u-lkp@intel.com > Fixes: 455a35a6cdb6 ("lib: add runtime test of check_*_overflow functions") > Cc: Rasmus Villemoes <linux@...musvillemoes.dk> > Cc: Vitor Massaru Iha <vitor@...saru.org> > Cc: "Gustavo A. R. Silva" <gustavoars@...nel.org> > Cc: Daniel Latypov <dlatypov@...gle.com> > Signed-off-by: Kees Cook <keescook@...omium.org> > --- > lib/overflow_kunit.c | 4 ---- > 1 file changed, 4 deletions(-) > > diff --git a/lib/overflow_kunit.c b/lib/overflow_kunit.c > index 475f0c064bf6..ac37bb543476 100644 > --- a/lib/overflow_kunit.c > +++ b/lib/overflow_kunit.c > @@ -255,10 +255,8 @@ DEFINE_TEST_FUNC(u16, "%d"); > DEFINE_TEST_FUNC(s16, "%d"); > DEFINE_TEST_FUNC(u32, "%u"); > DEFINE_TEST_FUNC(s32, "%d"); > -#if BITS_PER_LONG == 64 > DEFINE_TEST_FUNC(u64, "%llu"); > DEFINE_TEST_FUNC(s64, "%lld"); > -#endif > > static void overflow_shift_test(struct kunit *test) > { > @@ -650,10 +648,8 @@ static struct kunit_case overflow_test_cases[] = { > KUNIT_CASE(s16_overflow_test), > KUNIT_CASE(u32_overflow_test), > KUNIT_CASE(s32_overflow_test), > -#if BITS_PER_LONG == 64 > KUNIT_CASE(u64_overflow_test), > KUNIT_CASE(s64_overflow_test), > -#endif > KUNIT_CASE(overflow_shift_test), > KUNIT_CASE(overflow_allocation_test), > KUNIT_CASE(overflow_size_helpers_test), > -- > 2.32.0 > -- Thanks, ~Nick Desaulniers
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