linux-hardening - [PATCH] lib: overflow: Always build 64-bit test cases

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Date:   Wed, 11 May 2022 10:45:31 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>,
        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: [PATCH] lib: overflow: Always build 64-bit test cases

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.

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