Skip to content

L
linux
Commit 617f55e2 authored by Kees Cook's avatar Kees Cook
Browse files
Options

lib: overflow: Convert to Kunit 

Convert overflow unit tests to KUnit, for better integration into the
kernel self test framework. Includes a rename of test_overflow.c to
overflow_kunit.c, and CONFIG_TEST_OVERFLOW to CONFIG_OVERFLOW_KUNIT_TEST.

$ ./tools/testing/kunit/kunit.py run overflow
...
[14:33:51] Starting KUnit Kernel (1/1)...
[14:33:51] ============================================================
[14:33:51] ================== overflow (11 subtests) ==================
[14:33:51] [PASSED] u8_overflow_test
[14:33:51] [PASSED] s8_overflow_test
[14:33:51] [PASSED] u16_overflow_test
[14:33:51] [PASSED] s16_overflow_test
[14:33:51] [PASSED] u32_overflow_test
[14:33:51] [PASSED] s32_overflow_test
[14:33:51] [PASSED] u64_overflow_test
[14:33:51] [PASSED] s64_overflow_test
[14:33:51] [PASSED] overflow_shift_test
[14:33:51] [PASSED] overflow_allocation_test
[14:33:51] [PASSED] overflow_size_helpers_test
[14:33:51] ==================== [PASSED] overflow =====================
[14:33:51] ============================================================
[14:33:51] Testing complete. Passed: 11, Failed: 0, Crashed: 0, Skipped: 0, Errors: 0
[14:33:51] Elapsed time: 12.525s total, 0.001s configuring, 12.402s building, 0.101s running

Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Co-developed-by: default avatarVitor Massaru Iha <vitor@massaru.org>
Signed-off-by: default avatarVitor Massaru Iha <vitor@massaru.org>
Link: https://lore.kernel.org/lkml/20200720224418.200495-1-vitor@massaru.org/Co-developed-by: default avatarDaniel Latypov <dlatypov@google.com>
Signed-off-by: default avatarDaniel Latypov <dlatypov@google.com>
Link: https://lore.kernel.org/linux-kselftest/20210503211536.1384578-1-dlatypov@google.com/Acked-by: default avatarNick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/lkml/CAKwvOdm62iA1dNiC6Q11UJ-MnTqtc4kXkm-ubPaFMK824_k0nw@mail.gmail.comSigned-off-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarDavid Gow <davidgow@google.com>
Link: https://lore.kernel.org/lkml/CABVgOS=TWVh649_Vjo3wnMu9gZnq66gkV-LtGgsksAWMqc+MSA@mail.gmail.com
parent 230f6fa2
Hide whitespace changes
Inline Side-by-side
Showing with 263 additions and 309 deletions
lib/Kconfig.debug
View file @ 617f55e2
...@@ -2214,9 +2214,6 @@ config TEST_UUID ...@@ -2214,9 +2214,6 @@ config TEST_UUID
config TEST_XARRAY config TEST_XARRAY
tristate "Test the XArray code at runtime" tristate "Test the XArray code at runtime"
config TEST_OVERFLOW
tristate "Test check_*_overflow() functions at runtime"
config TEST_RHASHTABLE config TEST_RHASHTABLE
tristate "Perform selftest on resizable hash table" tristate "Perform selftest on resizable hash table"
help help
...@@ -2501,6 +2498,19 @@ config MEMCPY_KUNIT_TEST ...@@ -2501,6 +2498,19 @@ config MEMCPY_KUNIT_TEST
If unsure, say N. If unsure, say N.
config OVERFLOW_KUNIT_TEST
tristate "Test check_*_overflow() functions at runtime" if !KUNIT_ALL_TESTS
depends on KUNIT
default KUNIT_ALL_TESTS
help
Builds unit tests for the check_*_overflow(), size_*(), allocation, and
related functions.
For more information on KUnit and unit tests in general please refer
to the KUnit documentation in Documentation/dev-tools/kunit/.
If unsure, say N.
config TEST_UDELAY config TEST_UDELAY
tristate "udelay test driver" tristate "udelay test driver"
help help
......
lib/Makefile
View file @ 617f55e2
...@@ -77,7 +77,6 @@ obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o ...@@ -77,7 +77,6 @@ obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
obj-$(CONFIG_TEST_LKM) += test_module.o obj-$(CONFIG_TEST_LKM) += test_module.o
obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
obj-$(CONFIG_TEST_SORT) += test_sort.o obj-$(CONFIG_TEST_SORT) += test_sort.o
obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
...@@ -363,6 +362,7 @@ obj-$(CONFIG_BITS_TEST) += test_bits.o ...@@ -363,6 +362,7 @@ obj-$(CONFIG_BITS_TEST) += test_bits.o
obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o
obj-$(CONFIG_SLUB_KUNIT_TEST) += slub_kunit.o obj-$(CONFIG_SLUB_KUNIT_TEST) += slub_kunit.o
obj-$(CONFIG_MEMCPY_KUNIT_TEST) += memcpy_kunit.o obj-$(CONFIG_MEMCPY_KUNIT_TEST) += memcpy_kunit.o
obj-$(CONFIG_OVERFLOW_KUNIT_TEST) += overflow_kunit.o
obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
......
lib/test_overflow.c → lib/overflow_kunit.c
View file @ 617f55e2
// SPDX-License-Identifier: GPL-2.0 OR MIT // SPDX-License-Identifier: GPL-2.0 OR MIT
/* /*
* Test cases for arithmetic overflow checks. * Test cases for arithmetic overflow checks. See:
* https://www.kernel.org/doc/html/latest/dev-tools/kunit/kunit-tool.html#configuring-building-and-running-tests
* ./tools/testing/kunit/kunit.py run overflow [--raw_output]
*/ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <kunit/test.h>
#include <linux/device.h> #include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/module.h> #include <linux/module.h>
...@@ -19,7 +21,7 @@ ...@@ -19,7 +21,7 @@
t a, b; \ t a, b; \
t sum, diff, prod; \ t sum, diff, prod; \
bool s_of, d_of, p_of; \ bool s_of, d_of, p_of; \
} t ## _tests[] __initconst } t ## _tests[]
DEFINE_TEST_ARRAY(u8) = { DEFINE_TEST_ARRAY(u8) = {
{0, 0, 0, 0, 0, false, false, false}, {0, 0, 0, 0, 0, false, false, false},
...@@ -220,43 +222,31 @@ DEFINE_TEST_ARRAY(s64) = { ...@@ -220,43 +222,31 @@ DEFINE_TEST_ARRAY(s64) = {
bool _of; \ bool _of; \
\ \
_of = check_ ## op ## _overflow(a, b, &_r); \ _of = check_ ## op ## _overflow(a, b, &_r); \
if (_of != of) { \ KUNIT_EXPECT_EQ_MSG(test, _of, of, \
pr_warn("expected "fmt" "sym" "fmt \ "expected "fmt" "sym" "fmt" to%s overflow (type %s)\n", \
" to%s overflow (type %s)\n", \ a, b, of ? "" : " not", #t); \
a, b, of ? "" : " not", #t); \ KUNIT_EXPECT_EQ_MSG(test, _r, r, \
err = 1; \ "expected "fmt" "sym" "fmt" == "fmt", got "fmt" (type %s)\n", \
} \ a, b, r, _r, #t); \
if (_r != r) { \
pr_warn("expected "fmt" "sym" "fmt" == " \
fmt", got "fmt" (type %s)\n", \
a, b, r, _r, #t); \
err = 1; \
} \
} while (0) } while (0)
#define DEFINE_TEST_FUNC(t, fmt) \ #define DEFINE_TEST_FUNC(t, fmt) \
static int __init do_test_ ## t(const struct test_ ## t *p) \ static void do_test_ ## t(struct kunit *test, const struct test_ ## t *p) \
{ \ { \
int err = 0; \
\
check_one_op(t, fmt, add, "+", p->a, p->b, p->sum, p->s_of); \ 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, 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); \ check_one_op(t, fmt, sub, "-", p->a, p->b, p->diff, p->d_of); \
check_one_op(t, fmt, mul, "*", p->a, p->b, p->prod, p->p_of); \ check_one_op(t, fmt, mul, "*", p->a, p->b, p->prod, p->p_of); \
check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \ check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \
\
return err; \
} \ } \
\ \
static int __init test_ ## t ## _overflow(void) { \ static void t ## _overflow_test(struct kunit *test) { \
int err = 0; \
unsigned i; \ unsigned i; \
\ \
for (i = 0; i < ARRAY_SIZE(t ## _tests); ++i) \ for (i = 0; i < ARRAY_SIZE(t ## _tests); ++i) \
err |= do_test_ ## t(&t ## _tests[i]); \ do_test_ ## t(test, &t ## _tests[i]); \
pr_info("%zu %s arithmetic tests finished\n", \ kunit_info(test, "%zu %s arithmetic tests finished\n", \
ARRAY_SIZE(t ## _tests), #t); \ ARRAY_SIZE(t ## _tests), #t); \
return err; \
} }
DEFINE_TEST_FUNC(u8, "%d"); DEFINE_TEST_FUNC(u8, "%d");
...@@ -270,198 +260,176 @@ DEFINE_TEST_FUNC(u64, "%llu"); ...@@ -270,198 +260,176 @@ DEFINE_TEST_FUNC(u64, "%llu");
DEFINE_TEST_FUNC(s64, "%lld"); DEFINE_TEST_FUNC(s64, "%lld");
#endif #endif
static int __init test_overflow_calculation(void) static void overflow_shift_test(struct kunit *test)
{ {
int err = 0;
err |= test_u8_overflow();
err |= test_s8_overflow();
err |= test_u16_overflow();
err |= test_s16_overflow();
err |= test_u32_overflow();
err |= test_s32_overflow();
#if BITS_PER_LONG == 64
err |= test_u64_overflow();
err |= test_s64_overflow();
#endif
return err;
}
static int __init test_overflow_shift(void)
{
int err = 0;
int count = 0; int count = 0;
/* Args are: value, shift, type, expected result, overflow expected */ /* Args are: value, shift, type, expected result, overflow expected */
#define TEST_ONE_SHIFT(a, s, t, expect, of) ({ \ #define TEST_ONE_SHIFT(a, s, t, expect, of) do { \
int __failed = 0; \
typeof(a) __a = (a); \ typeof(a) __a = (a); \
typeof(s) __s = (s); \ typeof(s) __s = (s); \
t __e = (expect); \ t __e = (expect); \
t __d; \ t __d; \
bool __of = check_shl_overflow(__a, __s, &__d); \ bool __of = check_shl_overflow(__a, __s, &__d); \
if (__of != of) { \ if (__of != of) { \
pr_warn("expected (%s)(%s << %s) to%s overflow\n", \ KUNIT_EXPECT_EQ_MSG(test, __of, of, \
"expected (%s)(%s << %s) to%s overflow\n", \
#t, #a, #s, of ? "" : " not"); \ #t, #a, #s, of ? "" : " not"); \
__failed = 1; \
} else if (!__of && __d != __e) { \ } else if (!__of && __d != __e) { \
pr_warn("expected (%s)(%s << %s) == %s\n", \ KUNIT_EXPECT_EQ_MSG(test, __d, __e, \
"expected (%s)(%s << %s) == %s\n", \
#t, #a, #s, #expect); \ #t, #a, #s, #expect); \
if ((t)-1 < 0) \ if ((t)-1 < 0) \
pr_warn("got %lld\n", (s64)__d); \ kunit_info(test, "got %lld\n", (s64)__d); \
else \ else \
pr_warn("got %llu\n", (u64)__d); \ kunit_info(test, "got %llu\n", (u64)__d); \
__failed = 1; \
} \ } \
count++; \ count++; \
__failed; \ } while (0)
})
/* Sane shifts. */ /* Sane shifts. */
err |= TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false); TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false);
err |= TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false); TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false);
err |= TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false); TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false);
err |= TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false); TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false);
err |= TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false); TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false);
err |= TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false); TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false);
err |= TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false); TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false);
err |= TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false); TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false);
err |= TEST_ONE_SHIFT(1, 0, int, 1 << 0, false); TEST_ONE_SHIFT(1, 0, int, 1 << 0, false);
err |= TEST_ONE_SHIFT(1, 16, int, 1 << 16, false); TEST_ONE_SHIFT(1, 16, int, 1 << 16, false);
err |= TEST_ONE_SHIFT(1, 30, int, 1 << 30, false); TEST_ONE_SHIFT(1, 30, int, 1 << 30, false);
err |= TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false); TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false);
err |= TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false); TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false);
err |= TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false); TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false);
err |= TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false); TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false);
err |= TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false); TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false);
err |= TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false); TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false);
err |= TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false); TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false);
err |= TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false); TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false);
err |= TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false); TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false);
err |= TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false); TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false);
err |= TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false); TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false);
err |= TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false); TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false);
err |= TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false); TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false);
err |= TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false); TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false);
err |= TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64, TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64, 0xFFFFFFFFULL << 32, false);
0xFFFFFFFFULL << 32, false);
/* Sane shift: start and end with 0, without a too-wide shift. */ /* Sane shift: start and end with 0, without a too-wide shift. */
err |= TEST_ONE_SHIFT(0, 7, u8, 0, false); TEST_ONE_SHIFT(0, 7, u8, 0, false);
err |= TEST_ONE_SHIFT(0, 15, u16, 0, false); TEST_ONE_SHIFT(0, 15, u16, 0, false);
err |= TEST_ONE_SHIFT(0, 31, unsigned int, 0, false); TEST_ONE_SHIFT(0, 31, unsigned int, 0, false);
err |= TEST_ONE_SHIFT(0, 31, u32, 0, false); TEST_ONE_SHIFT(0, 31, u32, 0, false);
err |= TEST_ONE_SHIFT(0, 63, u64, 0, false); TEST_ONE_SHIFT(0, 63, u64, 0, false);
/* Sane shift: start and end with 0, without reaching signed bit. */ /* Sane shift: start and end with 0, without reaching signed bit. */
err |= TEST_ONE_SHIFT(0, 6, s8, 0, false); TEST_ONE_SHIFT(0, 6, s8, 0, false);
err |= TEST_ONE_SHIFT(0, 14, s16, 0, false); TEST_ONE_SHIFT(0, 14, s16, 0, false);
err |= TEST_ONE_SHIFT(0, 30, int, 0, false); TEST_ONE_SHIFT(0, 30, int, 0, false);
err |= TEST_ONE_SHIFT(0, 30, s32, 0, false); TEST_ONE_SHIFT(0, 30, s32, 0, false);
err |= TEST_ONE_SHIFT(0, 62, s64, 0, false); TEST_ONE_SHIFT(0, 62, s64, 0, false);
/* Overflow: shifted the bit off the end. */ /* Overflow: shifted the bit off the end. */
err |= TEST_ONE_SHIFT(1, 8, u8, 0, true); TEST_ONE_SHIFT(1, 8, u8, 0, true);
err |= TEST_ONE_SHIFT(1, 16, u16, 0, true); TEST_ONE_SHIFT(1, 16, u16, 0, true);
err |= TEST_ONE_SHIFT(1, 32, unsigned int, 0, true); TEST_ONE_SHIFT(1, 32, unsigned int, 0, true);
err |= TEST_ONE_SHIFT(1, 32, u32, 0, true); TEST_ONE_SHIFT(1, 32, u32, 0, true);
err |= TEST_ONE_SHIFT(1, 64, u64, 0, true); TEST_ONE_SHIFT(1, 64, u64, 0, true);
/* Overflow: shifted into the signed bit. */ /* Overflow: shifted into the signed bit. */
err |= TEST_ONE_SHIFT(1, 7, s8, 0, true); TEST_ONE_SHIFT(1, 7, s8, 0, true);
err |= TEST_ONE_SHIFT(1, 15, s16, 0, true); TEST_ONE_SHIFT(1, 15, s16, 0, true);
err |= TEST_ONE_SHIFT(1, 31, int, 0, true); TEST_ONE_SHIFT(1, 31, int, 0, true);
err |= TEST_ONE_SHIFT(1, 31, s32, 0, true); TEST_ONE_SHIFT(1, 31, s32, 0, true);
err |= TEST_ONE_SHIFT(1, 63, s64, 0, true); TEST_ONE_SHIFT(1, 63, s64, 0, true);
/* Overflow: high bit falls off unsigned types. */ /* Overflow: high bit falls off unsigned types. */
/* 10010110 */ /* 10010110 */
err |= TEST_ONE_SHIFT(150, 1, u8, 0, true); TEST_ONE_SHIFT(150, 1, u8, 0, true);
/* 1000100010010110 */ /* 1000100010010110 */
err |= TEST_ONE_SHIFT(34966, 1, u16, 0, true); TEST_ONE_SHIFT(34966, 1, u16, 0, true);
/* 10000100000010001000100010010110 */ /* 10000100000010001000100010010110 */
err |= TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true); TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true);
err |= TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true); TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true);
/* 1000001000010000010000000100000010000100000010001000100010010110 */ /* 1000001000010000010000000100000010000100000010001000100010010110 */
err |= TEST_ONE_SHIFT(9372061470395238550ULL, 1, u64, 0, true); TEST_ONE_SHIFT(9372061470395238550ULL, 1, u64, 0, true);
/* Overflow: bit shifted into signed bit on signed types. */ /* Overflow: bit shifted into signed bit on signed types. */
/* 01001011 */ /* 01001011 */
err |= TEST_ONE_SHIFT(75, 1, s8, 0, true); TEST_ONE_SHIFT(75, 1, s8, 0, true);
/* 0100010001001011 */ /* 0100010001001011 */
err |= TEST_ONE_SHIFT(17483, 1, s16, 0, true); TEST_ONE_SHIFT(17483, 1, s16, 0, true);
/* 01000010000001000100010001001011 */ /* 01000010000001000100010001001011 */
err |= TEST_ONE_SHIFT(1107575883, 1, s32, 0, true); TEST_ONE_SHIFT(1107575883, 1, s32, 0, true);
err |= TEST_ONE_SHIFT(1107575883, 1, int, 0, true); TEST_ONE_SHIFT(1107575883, 1, int, 0, true);
/* 0100000100001000001000000010000001000010000001000100010001001011 */ /* 0100000100001000001000000010000001000010000001000100010001001011 */
err |= TEST_ONE_SHIFT(4686030735197619275LL, 1, s64, 0, true); TEST_ONE_SHIFT(4686030735197619275LL, 1, s64, 0, true);
/* Overflow: bit shifted past signed bit on signed types. */ /* Overflow: bit shifted past signed bit on signed types. */
/* 01001011 */ /* 01001011 */
err |= TEST_ONE_SHIFT(75, 2, s8, 0, true); TEST_ONE_SHIFT(75, 2, s8, 0, true);
/* 0100010001001011 */ /* 0100010001001011 */
err |= TEST_ONE_SHIFT(17483, 2, s16, 0, true); TEST_ONE_SHIFT(17483, 2, s16, 0, true);
/* 01000010000001000100010001001011 */ /* 01000010000001000100010001001011 */
err |= TEST_ONE_SHIFT(1107575883, 2, s32, 0, true); TEST_ONE_SHIFT(1107575883, 2, s32, 0, true);
err |= TEST_ONE_SHIFT(1107575883, 2, int, 0, true); TEST_ONE_SHIFT(1107575883, 2, int, 0, true);
/* 0100000100001000001000000010000001000010000001000100010001001011 */ /* 0100000100001000001000000010000001000010000001000100010001001011 */
err |= TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true); TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true);
/* Overflow: values larger than destination type. */ /* Overflow: values larger than destination type. */
err |= TEST_ONE_SHIFT(0x100, 0, u8, 0, true); TEST_ONE_SHIFT(0x100, 0, u8, 0, true);
err |= TEST_ONE_SHIFT(0xFF, 0, s8, 0, true); TEST_ONE_SHIFT(0xFF, 0, s8, 0, true);
err |= TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true); TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true);
err |= TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true); TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true);
err |= TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true); TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true);
err |= TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true); TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true);
err |= TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true); TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true);
err |= TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true); TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true);
err |= TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true); TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true);
/* Nonsense: negative initial value. */ /* Nonsense: negative initial value. */
err |= TEST_ONE_SHIFT(-1, 0, s8, 0, true); TEST_ONE_SHIFT(-1, 0, s8, 0, true);
err |= TEST_ONE_SHIFT(-1, 0, u8, 0, true); TEST_ONE_SHIFT(-1, 0, u8, 0, true);
err |= TEST_ONE_SHIFT(-5, 0, s16, 0, true); TEST_ONE_SHIFT(-5, 0, s16, 0, true);
err |= TEST_ONE_SHIFT(-5, 0, u16, 0, true); TEST_ONE_SHIFT(-5, 0, u16, 0, true);
err |= TEST_ONE_SHIFT(-10, 0, int, 0, true); TEST_ONE_SHIFT(-10, 0, int, 0, true);
err |= TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true); TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true);
err |= TEST_ONE_SHIFT(-100, 0, s32, 0, true); TEST_ONE_SHIFT(-100, 0, s32, 0, true);
err |= TEST_ONE_SHIFT(-100, 0, u32, 0, true); TEST_ONE_SHIFT(-100, 0, u32, 0, true);
err |= TEST_ONE_SHIFT(-10000, 0, s64, 0, true); TEST_ONE_SHIFT(-10000, 0, s64, 0, true);
err |= TEST_ONE_SHIFT(-10000, 0, u64, 0, true); TEST_ONE_SHIFT(-10000, 0, u64, 0, true);
/* Nonsense: negative shift values. */ /* Nonsense: negative shift values. */
err |= TEST_ONE_SHIFT(0, -5, s8, 0, true); TEST_ONE_SHIFT(0, -5, s8, 0, true);
err |= TEST_ONE_SHIFT(0, -5, u8, 0, true); TEST_ONE_SHIFT(0, -5, u8, 0, true);
err |= TEST_ONE_SHIFT(0, -10, s16, 0, true); TEST_ONE_SHIFT(0, -10, s16, 0, true);
err |= TEST_ONE_SHIFT(0, -10, u16, 0, true); TEST_ONE_SHIFT(0, -10, u16, 0, true);
err |= TEST_ONE_SHIFT(0, -15, int, 0, true); TEST_ONE_SHIFT(0, -15, int, 0, true);
err |= TEST_ONE_SHIFT(0, -15, unsigned int, 0, true); TEST_ONE_SHIFT(0, -15, unsigned int, 0, true);
err |= TEST_ONE_SHIFT(0, -20, s32, 0, true); TEST_ONE_SHIFT(0, -20, s32, 0, true);
err |= TEST_ONE_SHIFT(0, -20, u32, 0, true); TEST_ONE_SHIFT(0, -20, u32, 0, true);
err |= TEST_ONE_SHIFT(0, -30, s64, 0, true); TEST_ONE_SHIFT(0, -30, s64, 0, true);
err |= TEST_ONE_SHIFT(0, -30, u64, 0, true); TEST_ONE_SHIFT(0, -30, u64, 0, true);
/* Overflow: shifted at or beyond entire type's bit width. */ /* Overflow: shifted at or beyond entire type's bit width. */
err |= TEST_ONE_SHIFT(0, 8, u8, 0, true); TEST_ONE_SHIFT(0, 8, u8, 0, true);
err |= TEST_ONE_SHIFT(0, 9, u8, 0, true); TEST_ONE_SHIFT(0, 9, u8, 0, true);
err |= TEST_ONE_SHIFT(0, 8, s8, 0, true); TEST_ONE_SHIFT(0, 8, s8, 0, true);
err |= TEST_ONE_SHIFT(0, 9, s8, 0, true); TEST_ONE_SHIFT(0, 9, s8, 0, true);
err |= TEST_ONE_SHIFT(0, 16, u16, 0, true); TEST_ONE_SHIFT(0, 16, u16, 0, true);
err |= TEST_ONE_SHIFT(0, 17, u16, 0, true); TEST_ONE_SHIFT(0, 17, u16, 0, true);
err |= TEST_ONE_SHIFT(0, 16, s16, 0, true); TEST_ONE_SHIFT(0, 16, s16, 0, true);
err |= TEST_ONE_SHIFT(0, 17, s16, 0, true); TEST_ONE_SHIFT(0, 17, s16, 0, true);
err |= TEST_ONE_SHIFT(0, 32, u32, 0, true); TEST_ONE_SHIFT(0, 32, u32, 0, true);
err |= TEST_ONE_SHIFT(0, 33, u32, 0, true); TEST_ONE_SHIFT(0, 33, u32, 0, true);
err |= TEST_ONE_SHIFT(0, 32, int, 0, true); TEST_ONE_SHIFT(0, 32, int, 0, true);
err |= TEST_ONE_SHIFT(0, 33, int, 0, true); TEST_ONE_SHIFT(0, 33, int, 0, true);
err |= TEST_ONE_SHIFT(0, 32, s32, 0, true); TEST_ONE_SHIFT(0, 32, s32, 0, true);
err |= TEST_ONE_SHIFT(0, 33, s32, 0, true); TEST_ONE_SHIFT(0, 33, s32, 0, true);
err |= TEST_ONE_SHIFT(0, 64, u64, 0, true); TEST_ONE_SHIFT(0, 64, u64, 0, true);
err |= TEST_ONE_SHIFT(0, 65, u64, 0, true); TEST_ONE_SHIFT(0, 65, u64, 0, true);
err |= TEST_ONE_SHIFT(0, 64, s64, 0, true); TEST_ONE_SHIFT(0, 64, s64, 0, true);
err |= TEST_ONE_SHIFT(0, 65, s64, 0, true); TEST_ONE_SHIFT(0, 65, s64, 0, true);
/* /*
* Corner case: for unsigned types, we fail when we've shifted * Corner case: for unsigned types, we fail when we've shifted
...@@ -472,17 +440,14 @@ static int __init test_overflow_shift(void) ...@@ -472,17 +440,14 @@ static int __init test_overflow_shift(void)
* signed bit). So, for now, we will test this condition but * signed bit). So, for now, we will test this condition but
* mark it as not expected to overflow. * mark it as not expected to overflow.
*/ */
err |= TEST_ONE_SHIFT(0, 7, s8, 0, false); TEST_ONE_SHIFT(0, 7, s8, 0, false);
err |= TEST_ONE_SHIFT(0, 15, s16, 0, false); TEST_ONE_SHIFT(0, 15, s16, 0, false);
err |= TEST_ONE_SHIFT(0, 31, int, 0, false); TEST_ONE_SHIFT(0, 31, int, 0, false);
err |= TEST_ONE_SHIFT(0, 31, s32, 0, false); TEST_ONE_SHIFT(0, 31, s32, 0, false);
err |= TEST_ONE_SHIFT(0, 63, s64, 0, false); TEST_ONE_SHIFT(0, 63, s64, 0, false);
pr_info("%d shift tests finished\n", count);
kunit_info(test, "%d shift tests finished\n", count);
#undef TEST_ONE_SHIFT #undef TEST_ONE_SHIFT
return err;
} }
/* /*
...@@ -502,7 +467,7 @@ static int __init test_overflow_shift(void) ...@@ -502,7 +467,7 @@ static int __init test_overflow_shift(void)
#define TEST_SIZE (5 * 4096) #define TEST_SIZE (5 * 4096)
#define DEFINE_TEST_ALLOC(func, free_func, want_arg, want_gfp, want_node)\ #define DEFINE_TEST_ALLOC(func, free_func, want_arg, want_gfp, want_node)\
static int __init test_ ## func (void *arg) \ static void test_ ## func (struct kunit *test, void *arg) \
{ \ { \
volatile size_t a = TEST_SIZE; \ volatile size_t a = TEST_SIZE; \
volatile size_t b = (SIZE_MAX / TEST_SIZE) + 1; \ volatile size_t b = (SIZE_MAX / TEST_SIZE) + 1; \
...@@ -510,30 +475,24 @@ static int __init test_ ## func (void *arg) \ ...@@ -510,30 +475,24 @@ static int __init test_ ## func (void *arg) \
\ \
/* Tiny allocation test. */ \ /* Tiny allocation test. */ \
ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, 1);\ ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, 1);\
if (!ptr) { \ KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \
pr_warn(#func " failed regular allocation?!\n"); \ #func " failed regular allocation?!\n"); \
return 1; \
} \
free ## want_arg (free_func, arg, ptr); \ free ## want_arg (free_func, arg, ptr); \
\ \
/* Wrapped allocation test. */ \ /* Wrapped allocation test. */ \
ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \
a * b); \ a * b); \
if (!ptr) { \ KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \
pr_warn(#func " unexpectedly failed bad wrapping?!\n"); \ #func " unexpectedly failed bad wrapping?!\n"); \
return 1; \
} \
free ## want_arg (free_func, arg, ptr); \ free ## want_arg (free_func, arg, ptr); \
\ \
/* Saturated allocation test. */ \ /* Saturated allocation test. */ \
ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \
array_size(a, b)); \ array_size(a, b)); \
if (ptr) { \ if (ptr) { \
pr_warn(#func " missed saturation!\n"); \ KUNIT_FAIL(test, #func " missed saturation!\n"); \
free ## want_arg (free_func, arg, ptr); \ free ## want_arg (free_func, arg, ptr); \
return 1; \
} \ } \
return 0; \
} }
/* /*
...@@ -554,44 +513,38 @@ DEFINE_TEST_ALLOC(kvzalloc_node, kvfree, 0, 1, 1); ...@@ -554,44 +513,38 @@ DEFINE_TEST_ALLOC(kvzalloc_node, kvfree, 0, 1, 1);
DEFINE_TEST_ALLOC(devm_kmalloc, devm_kfree, 1, 1, 0); DEFINE_TEST_ALLOC(devm_kmalloc, devm_kfree, 1, 1, 0);
DEFINE_TEST_ALLOC(devm_kzalloc, devm_kfree, 1, 1, 0); DEFINE_TEST_ALLOC(devm_kzalloc, devm_kfree, 1, 1, 0);
static int __init test_overflow_allocation(void) static void overflow_allocation_test(struct kunit *test)
{ {
const char device_name[] = "overflow-test"; const char device_name[] = "overflow-test";
struct device *dev; struct device *dev;
int count = 0; int count = 0;
int err = 0;
#define check_allocation_overflow(alloc) ({ \ #define check_allocation_overflow(alloc) do { \
count++; \ count++; \
test_ ## alloc(dev); \ test_ ## alloc(test, dev); \
}) } while (0)
/* Create dummy device for devm_kmalloc()-family tests. */ /* Create dummy device for devm_kmalloc()-family tests. */
dev = root_device_register(device_name); dev = root_device_register(device_name);
if (IS_ERR(dev)) { KUNIT_ASSERT_FALSE_MSG(test, IS_ERR(dev),
pr_warn("Cannot register test device\n"); "Cannot register test device\n");
return 1;
} check_allocation_overflow(kmalloc);
check_allocation_overflow(kmalloc_node);
err |= check_allocation_overflow(kmalloc); check_allocation_overflow(kzalloc);
err |= check_allocation_overflow(kmalloc_node); check_allocation_overflow(kzalloc_node);
err |= check_allocation_overflow(kzalloc); check_allocation_overflow(__vmalloc);
err |= check_allocation_overflow(kzalloc_node); check_allocation_overflow(kvmalloc);
err |= check_allocation_overflow(__vmalloc); check_allocation_overflow(kvmalloc_node);
err |= check_allocation_overflow(kvmalloc); check_allocation_overflow(kvzalloc);
err |= check_allocation_overflow(kvmalloc_node); check_allocation_overflow(kvzalloc_node);
err |= check_allocation_overflow(kvzalloc); check_allocation_overflow(devm_kmalloc);
err |= check_allocation_overflow(kvzalloc_node); check_allocation_overflow(devm_kzalloc);
err |= check_allocation_overflow(devm_kmalloc);
err |= check_allocation_overflow(devm_kzalloc);
device_unregister(dev); device_unregister(dev);
pr_info("%d allocation overflow tests finished\n", count); kunit_info(test, "%d allocation overflow tests finished\n", count);
#undef check_allocation_overflow #undef check_allocation_overflow
return err;
} }
struct __test_flex_array { struct __test_flex_array {
...@@ -600,127 +553,118 @@ struct __test_flex_array { ...@@ -600,127 +553,118 @@ struct __test_flex_array {
unsigned long data[]; unsigned long data[];
}; };
static int __init test_overflow_size_helpers(void) static void overflow_size_helpers_test(struct kunit *test)
{ {
/* Make sure struct_size() can be used in a constant expression. */ /* Make sure struct_size() can be used in a constant expression. */
u8 ce_array[struct_size((struct __test_flex_array *)0, data, 55)]; u8 ce_array[struct_size((struct __test_flex_array *)0, data, 55)];
struct __test_flex_array *obj; struct __test_flex_array *obj;
int count = 0; int count = 0;
int err = 0;
int var; int var;
volatile int unconst = 0; volatile int unconst = 0;
/* Verify constant expression against runtime version. */ /* Verify constant expression against runtime version. */
var = 55; var = 55;
OPTIMIZER_HIDE_VAR(var); OPTIMIZER_HIDE_VAR(var);
err |= sizeof(ce_array) != struct_size(obj, data, var); KUNIT_EXPECT_EQ(test, sizeof(ce_array), struct_size(obj, data, var));
#define check_one_size_helper(expected, func, args...) ({ \ #define check_one_size_helper(expected, func, args...) do { \
bool __failure = false; \ size_t _r = func(args); \
size_t _r; \ KUNIT_EXPECT_EQ_MSG(test, _r, expected, \
\ "expected " #func "(" #args ") to return %zu but got %zu instead\n", \
_r = func(args); \ (size_t)(expected), _r); \
if (_r != (expected)) { \
pr_warn("expected " #func "(" #args ") " \
"to return %zu but got %zu instead\n", \
(size_t)(expected), _r); \
__failure = true; \
} \
count++; \ count++; \
__failure; \ } while (0)
})
var = 4; var = 4;
err |= check_one_size_helper(20, size_mul, var++, 5); check_one_size_helper(20, size_mul, var++, 5);
err |= check_one_size_helper(20, size_mul, 4, var++); check_one_size_helper(20, size_mul, 4, var++);
err |= check_one_size_helper(0, size_mul, 0, 3); check_one_size_helper(0, size_mul, 0, 3);
err |= check_one_size_helper(0, size_mul, 3, 0); check_one_size_helper(0, size_mul, 3, 0);
err |= check_one_size_helper(6, size_mul, 2, 3); check_one_size_helper(6, size_mul, 2, 3);
err |= check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 1); check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 1);
err |= check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 3); check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 3);
err |= check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, -3); check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, -3);
var = 4; var = 4;
err |= check_one_size_helper(9, size_add, var++, 5); check_one_size_helper(9, size_add, var++, 5);
err |= check_one_size_helper(9, size_add, 4, var++); check_one_size_helper(9, size_add, 4, var++);
err |= check_one_size_helper(9, size_add, 9, 0); check_one_size_helper(9, size_add, 9, 0);
err |= check_one_size_helper(9, size_add, 0, 9); check_one_size_helper(9, size_add, 0, 9);
err |= check_one_size_helper(5, size_add, 2, 3); check_one_size_helper(5, size_add, 2, 3);
err |= check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 1); check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 1);
err |= check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 3); check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 3);
err |= check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, -3); check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, -3);
var = 4; var = 4;
err |= check_one_size_helper(1, size_sub, var--, 3); check_one_size_helper(1, size_sub, var--, 3);
err |= check_one_size_helper(1, size_sub, 4, var--); check_one_size_helper(1, size_sub, 4, var--);
err |= check_one_size_helper(1, size_sub, 3, 2); check_one_size_helper(1, size_sub, 3, 2);
err |= check_one_size_helper(9, size_sub, 9, 0); check_one_size_helper(9, size_sub, 9, 0);
err |= check_one_size_helper(SIZE_MAX, size_sub, 9, -3); check_one_size_helper(SIZE_MAX, size_sub, 9, -3);
err |= check_one_size_helper(SIZE_MAX, size_sub, 0, 9); check_one_size_helper(SIZE_MAX, size_sub, 0, 9);
err |= check_one_size_helper(SIZE_MAX, size_sub, 2, 3); check_one_size_helper(SIZE_MAX, size_sub, 2, 3);
err |= check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 0); check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 0);
err |= check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 10); check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 10);
err |= check_one_size_helper(SIZE_MAX, size_sub, 0, SIZE_MAX); check_one_size_helper(SIZE_MAX, size_sub, 0, SIZE_MAX);
err |= check_one_size_helper(SIZE_MAX, size_sub, 14, SIZE_MAX); check_one_size_helper(SIZE_MAX, size_sub, 14, SIZE_MAX);
err |= check_one_size_helper(SIZE_MAX - 2, size_sub, SIZE_MAX - 1, 1); check_one_size_helper(SIZE_MAX - 2, size_sub, SIZE_MAX - 1, 1);
err |= check_one_size_helper(SIZE_MAX - 4, size_sub, SIZE_MAX - 1, 3); check_one_size_helper(SIZE_MAX - 4, size_sub, SIZE_MAX - 1, 3);
err |= check_one_size_helper(1, size_sub, SIZE_MAX - 1, -3); check_one_size_helper(1, size_sub, SIZE_MAX - 1, -3);
var = 4; var = 4;
err |= check_one_size_helper(4 * sizeof(*obj->data), check_one_size_helper(4 * sizeof(*obj->data),
flex_array_size, obj, data, var++); flex_array_size, obj, data, var++);
err |= check_one_size_helper(5 * sizeof(*obj->data), check_one_size_helper(5 * sizeof(*obj->data),
flex_array_size, obj, data, var++); flex_array_size, obj, data, var++);
err |= check_one_size_helper(0, flex_array_size, obj, data, 0 + unconst); check_one_size_helper(0, flex_array_size, obj, data, 0 + unconst);
err |= check_one_size_helper(sizeof(*obj->data), check_one_size_helper(sizeof(*obj->data),
flex_array_size, obj, data, 1 + unconst); flex_array_size, obj, data, 1 + unconst);
err |= check_one_size_helper(7 * sizeof(*obj->data), check_one_size_helper(7 * sizeof(*obj->data),
flex_array_size, obj, data, 7 + unconst); flex_array_size, obj, data, 7 + unconst);
err |= check_one_size_helper(SIZE_MAX, check_one_size_helper(SIZE_MAX,
flex_array_size, obj, data, -1 + unconst); flex_array_size, obj, data, -1 + unconst);
err |= check_one_size_helper(SIZE_MAX, check_one_size_helper(SIZE_MAX,
flex_array_size, obj, data, SIZE_MAX - 4 + unconst); flex_array_size, obj, data, SIZE_MAX - 4 + unconst);
var = 4; var = 4;
err |= check_one_size_helper(sizeof(*obj) + (4 * sizeof(*obj->data)), check_one_size_helper(sizeof(*obj) + (4 * sizeof(*obj->data)),
struct_size, obj, data, var++); struct_size, obj, data, var++);
err |= check_one_size_helper(sizeof(*obj) + (5 * sizeof(*obj->data)), check_one_size_helper(sizeof(*obj) + (5 * sizeof(*obj->data)),
struct_size, obj, data, var++); struct_size, obj, data, var++);
err |= check_one_size_helper(sizeof(*obj), struct_size, obj, data, 0 + unconst); check_one_size_helper(sizeof(*obj), struct_size, obj, data, 0 + unconst);
err |= check_one_size_helper(sizeof(*obj) + sizeof(*obj->data), check_one_size_helper(sizeof(*obj) + sizeof(*obj->data),
struct_size, obj, data, 1 + unconst); struct_size, obj, data, 1 + unconst);
err |= check_one_size_helper(SIZE_MAX, check_one_size_helper(SIZE_MAX,
struct_size, obj, data, -3 + unconst); struct_size, obj, data, -3 + unconst);
err |= check_one_size_helper(SIZE_MAX, check_one_size_helper(SIZE_MAX,
struct_size, obj, data, SIZE_MAX - 3 + unconst); struct_size, obj, data, SIZE_MAX - 3 + unconst);
pr_info("%d overflow size helper tests finished\n", count); kunit_info(test, "%d overflow size helper tests finished\n", count);
#undef check_one_size_helper
return err;
} }
static int __init test_module_init(void) static struct kunit_case overflow_test_cases[] = {
{ KUNIT_CASE(u8_overflow_test),
int err = 0; KUNIT_CASE(s8_overflow_test),
KUNIT_CASE(u16_overflow_test),
err |= test_overflow_calculation(); KUNIT_CASE(s16_overflow_test),
err |= test_overflow_shift(); KUNIT_CASE(u32_overflow_test),
err |= test_overflow_size_helpers(); KUNIT_CASE(s32_overflow_test),
err |= test_overflow_allocation(); #if BITS_PER_LONG == 64
KUNIT_CASE(u64_overflow_test),
if (err) { KUNIT_CASE(s64_overflow_test),
pr_warn("FAIL!\n"); #endif
err = -EINVAL; KUNIT_CASE(overflow_shift_test),
} else { KUNIT_CASE(overflow_allocation_test),
pr_info("all tests passed\n"); KUNIT_CASE(overflow_size_helpers_test),
} {}
};
return err; static struct kunit_suite overflow_test_suite = {
} .name = "overflow",
.test_cases = overflow_test_cases,
};
static void __exit test_module_exit(void) kunit_test_suite(overflow_test_suite);
{ }
module_init(test_module_init);
module_exit(test_module_exit);
MODULE_LICENSE("Dual MIT/GPL"); MODULE_LICENSE("Dual MIT/GPL");
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7