diff options
| -rw-r--r-- | lib/overflow_kunit.c | 52 |
1 files changed, 35 insertions, 17 deletions
diff --git a/lib/overflow_kunit.c b/lib/overflow_kunit.c index ca5f1aa3e91d..b8556a2e7bb1 100644 --- a/lib/overflow_kunit.c +++ b/lib/overflow_kunit.c @@ -16,6 +16,34 @@ #include <linux/types.h> #include <linux/vmalloc.h> +#define SKIP(cond, reason) do { \ + if (cond) { \ + kunit_skip(test, reason); \ + return; \ + } \ +} while (0) + +/* + * Clang 11 and earlier generate unwanted libcalls for signed output + * on unsigned input. + */ +#if defined(CONFIG_CC_IS_CLANG) && __clang_major__ <= 11 +# define SKIP_SIGN_MISMATCH(t) SKIP(t, "Clang 11 unwanted libcalls") +#else +# define SKIP_SIGN_MISMATCH(t) do { } while (0) +#endif + +/* + * Clang 13 and earlier generate unwanted libcalls for 64-bit tests on + * 32-bit hosts. + */ +#if defined(CONFIG_CC_IS_CLANG) && __clang_major__ <= 13 && \ + BITS_PER_LONG != 64 +# define SKIP_64_ON_32(t) SKIP(t, "Clang 13 unwanted libcalls") +#else +# define SKIP_64_ON_32(t) do { } while (0) +#endif + #define DEFINE_TEST_ARRAY_TYPED(t1, t2, t) \ static const struct test_ ## t1 ## _ ## t2 ## __ ## t { \ t1 a; \ @@ -94,7 +122,6 @@ DEFINE_TEST_ARRAY(u32) = { {-4U, 5U, 1U, -9U, -20U, true, false, true}, }; -#if BITS_PER_LONG == 64 DEFINE_TEST_ARRAY(u64) = { {0, 0, 0, 0, 0, false, false, false}, {1, 1, 2, 0, 1, false, false, false}, @@ -118,7 +145,6 @@ DEFINE_TEST_ARRAY(u64) = { false, true, false}, {-15ULL, 10ULL, -5ULL, -25ULL, -150ULL, false, false, true}, }; -#endif DEFINE_TEST_ARRAY(s8) = { {0, 0, 0, 0, 0, false, false, false}, @@ -194,7 +220,6 @@ DEFINE_TEST_ARRAY(s32) = { {S32_MAX, S32_MAX, -2, 0, 1, true, false, true}, }; -#if BITS_PER_LONG == 64 DEFINE_TEST_ARRAY(s64) = { {0, 0, 0, 0, 0, false, false, false}, @@ -223,7 +248,6 @@ DEFINE_TEST_ARRAY(s64) = { {-128, -1, -129, -127, 128, false, false, false}, {0, -S64_MAX, -S64_MAX, S64_MAX, 0, false, false, false}, }; -#endif #define check_one_op(t, fmt, op, sym, a, b, r, of) do { \ int _a_orig = a, _a_bump = a + 1; \ @@ -246,7 +270,7 @@ DEFINE_TEST_ARRAY(s64) = { #define DEFINE_TEST_FUNC_TYPED(n, t, fmt) \ static void do_test_ ## n(struct kunit *test, const struct test_ ## n *p) \ -{ \ +{ \ check_one_op(t, fmt, add, "+", p->a, p->b, p->sum, p->s_of); \ check_one_op(t, fmt, add, "+", p->b, p->a, p->sum, p->s_of); \ check_one_op(t, fmt, sub, "-", p->a, p->b, p->diff, p->d_of); \ @@ -254,10 +278,15 @@ static void do_test_ ## n(struct kunit *test, const struct test_ ## n *p) \ check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \ } \ \ -__maybe_unused \ static void n ## _overflow_test(struct kunit *test) { \ unsigned i; \ \ + SKIP_64_ON_32(__same_type(t, u64)); \ + SKIP_64_ON_32(__same_type(t, s64)); \ + SKIP_SIGN_MISMATCH(__same_type(n ## _tests[0].a, u32) && \ + __same_type(n ## _tests[0].b, u32) && \ + __same_type(n ## _tests[0].sum, int)); \ + \ for (i = 0; i < ARRAY_SIZE(n ## _tests); ++i) \ do_test_ ## n(test, &n ## _tests[i]); \ kunit_info(test, "%zu %s arithmetic tests finished\n", \ @@ -273,10 +302,8 @@ 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 DEFINE_TEST_ARRAY_TYPED(u32, u32, u8) = { {0, 0, 0, 0, 0, false, false, false}, @@ -716,18 +743,9 @@ static struct kunit_case overflow_test_cases[] = { KUNIT_CASE(s16_s16__s16_overflow_test), KUNIT_CASE(u32_u32__u32_overflow_test), KUNIT_CASE(s32_s32__s32_overflow_test), -/* Clang 13 and earlier generate unwanted libcalls on 32-bit. */ -#if BITS_PER_LONG == 64 KUNIT_CASE(u64_u64__u64_overflow_test), KUNIT_CASE(s64_s64__s64_overflow_test), -#endif -/* - * Clang 11 and earlier generate unwanted libcalls for signed output, unsigned - * input. - */ -#if !(defined(CONFIG_CC_IS_CLANG) && __clang_major__ <= 11) KUNIT_CASE(u32_u32__int_overflow_test), -#endif KUNIT_CASE(u32_u32__u8_overflow_test), KUNIT_CASE(u8_u8__int_overflow_test), KUNIT_CASE(int_int__u8_overflow_test), |