mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 16:41:58 +00:00
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: Vitor Massaru Iha <vitor@massaru.org> Signed-off-by: Vitor Massaru Iha <vitor@massaru.org> Link: https://lore.kernel.org/lkml/20200720224418.200495-1-vitor@massaru.org/ Co-developed-by: Daniel Latypov <dlatypov@google.com> Signed-off-by: Daniel Latypov <dlatypov@google.com> Link: https://lore.kernel.org/linux-kselftest/20210503211536.1384578-1-dlatypov@google.com/ Acked-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/lkml/CAKwvOdm62iA1dNiC6Q11UJ-MnTqtc4kXkm-ubPaFMK824_k0nw@mail.gmail.com Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: David Gow <davidgow@google.com> Link: https://lore.kernel.org/lkml/CABVgOS=TWVh649_Vjo3wnMu9gZnq66gkV-LtGgsksAWMqc+MSA@mail.gmail.com
This commit is contained in:
parent
230f6fa2c1
commit
617f55e207
@ -2214,9 +2214,6 @@ config TEST_UUID
|
||||
config TEST_XARRAY
|
||||
tristate "Test the XArray code at runtime"
|
||||
|
||||
config TEST_OVERFLOW
|
||||
tristate "Test check_*_overflow() functions at runtime"
|
||||
|
||||
config TEST_RHASHTABLE
|
||||
tristate "Perform selftest on resizable hash table"
|
||||
help
|
||||
@ -2501,6 +2498,19 @@ config MEMCPY_KUNIT_TEST
|
||||
|
||||
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
|
||||
tristate "udelay test driver"
|
||||
help
|
||||
|
@ -77,7 +77,6 @@ obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
|
||||
obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
|
||||
obj-$(CONFIG_TEST_LKM) += test_module.o
|
||||
obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
|
||||
obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
|
||||
obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
|
||||
obj-$(CONFIG_TEST_SORT) += test_sort.o
|
||||
obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
|
||||
@ -363,6 +362,7 @@ obj-$(CONFIG_BITS_TEST) += test_bits.o
|
||||
obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o
|
||||
obj-$(CONFIG_SLUB_KUNIT_TEST) += slub_kunit.o
|
||||
obj-$(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
|
||||
|
||||
|
@ -1,11 +1,13 @@
|
||||
// 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
|
||||
|
||||
#include <kunit/test.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/module.h>
|
||||
@ -19,7 +21,7 @@
|
||||
t a, b; \
|
||||
t sum, diff, prod; \
|
||||
bool s_of, d_of, p_of; \
|
||||
} t ## _tests[] __initconst
|
||||
} t ## _tests[]
|
||||
|
||||
DEFINE_TEST_ARRAY(u8) = {
|
||||
{0, 0, 0, 0, 0, false, false, false},
|
||||
@ -220,43 +222,31 @@ DEFINE_TEST_ARRAY(s64) = {
|
||||
bool _of; \
|
||||
\
|
||||
_of = check_ ## op ## _overflow(a, b, &_r); \
|
||||
if (_of != of) { \
|
||||
pr_warn("expected "fmt" "sym" "fmt \
|
||||
" to%s overflow (type %s)\n", \
|
||||
a, b, of ? "" : " not", #t); \
|
||||
err = 1; \
|
||||
} \
|
||||
if (_r != r) { \
|
||||
pr_warn("expected "fmt" "sym" "fmt" == " \
|
||||
fmt", got "fmt" (type %s)\n", \
|
||||
a, b, r, _r, #t); \
|
||||
err = 1; \
|
||||
} \
|
||||
KUNIT_EXPECT_EQ_MSG(test, _of, of, \
|
||||
"expected "fmt" "sym" "fmt" to%s overflow (type %s)\n", \
|
||||
a, b, of ? "" : " not", #t); \
|
||||
KUNIT_EXPECT_EQ_MSG(test, _r, r, \
|
||||
"expected "fmt" "sym" "fmt" == "fmt", got "fmt" (type %s)\n", \
|
||||
a, b, r, _r, #t); \
|
||||
} while (0)
|
||||
|
||||
#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->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, 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); \
|
||||
\
|
||||
return err; \
|
||||
} \
|
||||
\
|
||||
static int __init test_ ## t ## _overflow(void) { \
|
||||
int err = 0; \
|
||||
static void t ## _overflow_test(struct kunit *test) { \
|
||||
unsigned i; \
|
||||
\
|
||||
for (i = 0; i < ARRAY_SIZE(t ## _tests); ++i) \
|
||||
err |= do_test_ ## t(&t ## _tests[i]); \
|
||||
pr_info("%zu %s arithmetic tests finished\n", \
|
||||
do_test_ ## t(test, &t ## _tests[i]); \
|
||||
kunit_info(test, "%zu %s arithmetic tests finished\n", \
|
||||
ARRAY_SIZE(t ## _tests), #t); \
|
||||
return err; \
|
||||
}
|
||||
|
||||
DEFINE_TEST_FUNC(u8, "%d");
|
||||
@ -270,198 +260,176 @@ DEFINE_TEST_FUNC(u64, "%llu");
|
||||
DEFINE_TEST_FUNC(s64, "%lld");
|
||||
#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;
|
||||
|
||||
/* Args are: value, shift, type, expected result, overflow expected */
|
||||
#define TEST_ONE_SHIFT(a, s, t, expect, of) ({ \
|
||||
int __failed = 0; \
|
||||
#define TEST_ONE_SHIFT(a, s, t, expect, of) do { \
|
||||
typeof(a) __a = (a); \
|
||||
typeof(s) __s = (s); \
|
||||
t __e = (expect); \
|
||||
t __d; \
|
||||
bool __of = check_shl_overflow(__a, __s, &__d); \
|
||||
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"); \
|
||||
__failed = 1; \
|
||||
} 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); \
|
||||
if ((t)-1 < 0) \
|
||||
pr_warn("got %lld\n", (s64)__d); \
|
||||
kunit_info(test, "got %lld\n", (s64)__d); \
|
||||
else \
|
||||
pr_warn("got %llu\n", (u64)__d); \
|
||||
__failed = 1; \
|
||||
kunit_info(test, "got %llu\n", (u64)__d); \
|
||||
} \
|
||||
count++; \
|
||||
__failed; \
|
||||
})
|
||||
} while (0)
|
||||
|
||||
/* Sane shifts. */
|
||||
err |= TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false);
|
||||
err |= TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false);
|
||||
err |= TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false);
|
||||
err |= TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false);
|
||||
err |= TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false);
|
||||
err |= TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false);
|
||||
err |= TEST_ONE_SHIFT(1, 0, int, 1 << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 16, int, 1 << 16, false);
|
||||
err |= TEST_ONE_SHIFT(1, 30, int, 1 << 30, false);
|
||||
err |= TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false);
|
||||
err |= TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false);
|
||||
err |= TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false);
|
||||
err |= TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false);
|
||||
err |= TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false);
|
||||
err |= TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false);
|
||||
err |= TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false);
|
||||
err |= TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false);
|
||||
err |= TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64,
|
||||
0xFFFFFFFFULL << 32, false);
|
||||
TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false);
|
||||
TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false);
|
||||
TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false);
|
||||
TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false);
|
||||
TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false);
|
||||
TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false);
|
||||
TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false);
|
||||
TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false);
|
||||
TEST_ONE_SHIFT(1, 0, int, 1 << 0, false);
|
||||
TEST_ONE_SHIFT(1, 16, int, 1 << 16, false);
|
||||
TEST_ONE_SHIFT(1, 30, int, 1 << 30, false);
|
||||
TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false);
|
||||
TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false);
|
||||
TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false);
|
||||
TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false);
|
||||
TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false);
|
||||
TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false);
|
||||
TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false);
|
||||
TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false);
|
||||
TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false);
|
||||
TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false);
|
||||
TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false);
|
||||
TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false);
|
||||
TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false);
|
||||
TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false);
|
||||
TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64, 0xFFFFFFFFULL << 32, false);
|
||||
|
||||
/* Sane shift: start and end with 0, without a too-wide shift. */
|
||||
err |= TEST_ONE_SHIFT(0, 7, u8, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 15, u16, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 31, unsigned int, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 31, u32, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 63, u64, 0, false);
|
||||
TEST_ONE_SHIFT(0, 7, u8, 0, false);
|
||||
TEST_ONE_SHIFT(0, 15, u16, 0, false);
|
||||
TEST_ONE_SHIFT(0, 31, unsigned int, 0, false);
|
||||
TEST_ONE_SHIFT(0, 31, u32, 0, false);
|
||||
TEST_ONE_SHIFT(0, 63, u64, 0, false);
|
||||
|
||||
/* Sane shift: start and end with 0, without reaching signed bit. */
|
||||
err |= TEST_ONE_SHIFT(0, 6, s8, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 14, s16, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 30, int, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 30, s32, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 62, s64, 0, false);
|
||||
TEST_ONE_SHIFT(0, 6, s8, 0, false);
|
||||
TEST_ONE_SHIFT(0, 14, s16, 0, false);
|
||||
TEST_ONE_SHIFT(0, 30, int, 0, false);
|
||||
TEST_ONE_SHIFT(0, 30, s32, 0, false);
|
||||
TEST_ONE_SHIFT(0, 62, s64, 0, false);
|
||||
|
||||
/* Overflow: shifted the bit off the end. */
|
||||
err |= TEST_ONE_SHIFT(1, 8, u8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 16, u16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 32, unsigned int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 32, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 64, u64, 0, true);
|
||||
TEST_ONE_SHIFT(1, 8, u8, 0, true);
|
||||
TEST_ONE_SHIFT(1, 16, u16, 0, true);
|
||||
TEST_ONE_SHIFT(1, 32, unsigned int, 0, true);
|
||||
TEST_ONE_SHIFT(1, 32, u32, 0, true);
|
||||
TEST_ONE_SHIFT(1, 64, u64, 0, true);
|
||||
|
||||
/* Overflow: shifted into the signed bit. */
|
||||
err |= TEST_ONE_SHIFT(1, 7, s8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 15, s16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 31, int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 31, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1, 63, s64, 0, true);
|
||||
TEST_ONE_SHIFT(1, 7, s8, 0, true);
|
||||
TEST_ONE_SHIFT(1, 15, s16, 0, true);
|
||||
TEST_ONE_SHIFT(1, 31, int, 0, true);
|
||||
TEST_ONE_SHIFT(1, 31, s32, 0, true);
|
||||
TEST_ONE_SHIFT(1, 63, s64, 0, true);
|
||||
|
||||
/* Overflow: high bit falls off unsigned types. */
|
||||
/* 10010110 */
|
||||
err |= TEST_ONE_SHIFT(150, 1, u8, 0, true);
|
||||
TEST_ONE_SHIFT(150, 1, u8, 0, true);
|
||||
/* 1000100010010110 */
|
||||
err |= TEST_ONE_SHIFT(34966, 1, u16, 0, true);
|
||||
TEST_ONE_SHIFT(34966, 1, u16, 0, true);
|
||||
/* 10000100000010001000100010010110 */
|
||||
err |= TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true);
|
||||
TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true);
|
||||
TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true);
|
||||
/* 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. */
|
||||
/* 01001011 */
|
||||
err |= TEST_ONE_SHIFT(75, 1, s8, 0, true);
|
||||
TEST_ONE_SHIFT(75, 1, s8, 0, true);
|
||||
/* 0100010001001011 */
|
||||
err |= TEST_ONE_SHIFT(17483, 1, s16, 0, true);
|
||||
TEST_ONE_SHIFT(17483, 1, s16, 0, true);
|
||||
/* 01000010000001000100010001001011 */
|
||||
err |= TEST_ONE_SHIFT(1107575883, 1, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1107575883, 1, int, 0, true);
|
||||
TEST_ONE_SHIFT(1107575883, 1, s32, 0, true);
|
||||
TEST_ONE_SHIFT(1107575883, 1, int, 0, true);
|
||||
/* 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. */
|
||||
/* 01001011 */
|
||||
err |= TEST_ONE_SHIFT(75, 2, s8, 0, true);
|
||||
TEST_ONE_SHIFT(75, 2, s8, 0, true);
|
||||
/* 0100010001001011 */
|
||||
err |= TEST_ONE_SHIFT(17483, 2, s16, 0, true);
|
||||
TEST_ONE_SHIFT(17483, 2, s16, 0, true);
|
||||
/* 01000010000001000100010001001011 */
|
||||
err |= TEST_ONE_SHIFT(1107575883, 2, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(1107575883, 2, int, 0, true);
|
||||
TEST_ONE_SHIFT(1107575883, 2, s32, 0, true);
|
||||
TEST_ONE_SHIFT(1107575883, 2, int, 0, true);
|
||||
/* 0100000100001000001000000010000001000010000001000100010001001011 */
|
||||
err |= TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true);
|
||||
TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true);
|
||||
|
||||
/* Overflow: values larger than destination type. */
|
||||
err |= TEST_ONE_SHIFT(0x100, 0, u8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0xFF, 0, s8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true);
|
||||
TEST_ONE_SHIFT(0x100, 0, u8, 0, true);
|
||||
TEST_ONE_SHIFT(0xFF, 0, s8, 0, true);
|
||||
TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true);
|
||||
TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true);
|
||||
TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true);
|
||||
TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true);
|
||||
TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true);
|
||||
TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true);
|
||||
TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true);
|
||||
|
||||
/* Nonsense: negative initial value. */
|
||||
err |= TEST_ONE_SHIFT(-1, 0, s8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-1, 0, u8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-5, 0, s16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-5, 0, u16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-10, 0, int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-100, 0, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-100, 0, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-10000, 0, s64, 0, true);
|
||||
err |= TEST_ONE_SHIFT(-10000, 0, u64, 0, true);
|
||||
TEST_ONE_SHIFT(-1, 0, s8, 0, true);
|
||||
TEST_ONE_SHIFT(-1, 0, u8, 0, true);
|
||||
TEST_ONE_SHIFT(-5, 0, s16, 0, true);
|
||||
TEST_ONE_SHIFT(-5, 0, u16, 0, true);
|
||||
TEST_ONE_SHIFT(-10, 0, int, 0, true);
|
||||
TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true);
|
||||
TEST_ONE_SHIFT(-100, 0, s32, 0, true);
|
||||
TEST_ONE_SHIFT(-100, 0, u32, 0, true);
|
||||
TEST_ONE_SHIFT(-10000, 0, s64, 0, true);
|
||||
TEST_ONE_SHIFT(-10000, 0, u64, 0, true);
|
||||
|
||||
/* Nonsense: negative shift values. */
|
||||
err |= TEST_ONE_SHIFT(0, -5, s8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -5, u8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -10, s16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -10, u16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -15, int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -15, unsigned int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -20, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -20, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -30, s64, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, -30, u64, 0, true);
|
||||
TEST_ONE_SHIFT(0, -5, s8, 0, true);
|
||||
TEST_ONE_SHIFT(0, -5, u8, 0, true);
|
||||
TEST_ONE_SHIFT(0, -10, s16, 0, true);
|
||||
TEST_ONE_SHIFT(0, -10, u16, 0, true);
|
||||
TEST_ONE_SHIFT(0, -15, int, 0, true);
|
||||
TEST_ONE_SHIFT(0, -15, unsigned int, 0, true);
|
||||
TEST_ONE_SHIFT(0, -20, s32, 0, true);
|
||||
TEST_ONE_SHIFT(0, -20, u32, 0, true);
|
||||
TEST_ONE_SHIFT(0, -30, s64, 0, true);
|
||||
TEST_ONE_SHIFT(0, -30, u64, 0, true);
|
||||
|
||||
/* Overflow: shifted at or beyond entire type's bit width. */
|
||||
err |= TEST_ONE_SHIFT(0, 8, u8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 9, u8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 8, s8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 9, s8, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 16, u16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 17, u16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 16, s16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 17, s16, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 32, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 33, u32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 32, int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 33, int, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 32, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 33, s32, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 64, u64, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 65, u64, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 64, s64, 0, true);
|
||||
err |= TEST_ONE_SHIFT(0, 65, s64, 0, true);
|
||||
TEST_ONE_SHIFT(0, 8, u8, 0, true);
|
||||
TEST_ONE_SHIFT(0, 9, u8, 0, true);
|
||||
TEST_ONE_SHIFT(0, 8, s8, 0, true);
|
||||
TEST_ONE_SHIFT(0, 9, s8, 0, true);
|
||||
TEST_ONE_SHIFT(0, 16, u16, 0, true);
|
||||
TEST_ONE_SHIFT(0, 17, u16, 0, true);
|
||||
TEST_ONE_SHIFT(0, 16, s16, 0, true);
|
||||
TEST_ONE_SHIFT(0, 17, s16, 0, true);
|
||||
TEST_ONE_SHIFT(0, 32, u32, 0, true);
|
||||
TEST_ONE_SHIFT(0, 33, u32, 0, true);
|
||||
TEST_ONE_SHIFT(0, 32, int, 0, true);
|
||||
TEST_ONE_SHIFT(0, 33, int, 0, true);
|
||||
TEST_ONE_SHIFT(0, 32, s32, 0, true);
|
||||
TEST_ONE_SHIFT(0, 33, s32, 0, true);
|
||||
TEST_ONE_SHIFT(0, 64, u64, 0, true);
|
||||
TEST_ONE_SHIFT(0, 65, u64, 0, true);
|
||||
TEST_ONE_SHIFT(0, 64, s64, 0, true);
|
||||
TEST_ONE_SHIFT(0, 65, s64, 0, true);
|
||||
|
||||
/*
|
||||
* Corner case: for unsigned types, we fail when we've shifted
|
||||
@ -472,17 +440,14 @@ static int __init test_overflow_shift(void)
|
||||
* signed bit). So, for now, we will test this condition but
|
||||
* mark it as not expected to overflow.
|
||||
*/
|
||||
err |= TEST_ONE_SHIFT(0, 7, s8, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 15, s16, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 31, int, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 31, s32, 0, false);
|
||||
err |= TEST_ONE_SHIFT(0, 63, s64, 0, false);
|
||||
|
||||
pr_info("%d shift tests finished\n", count);
|
||||
TEST_ONE_SHIFT(0, 7, s8, 0, false);
|
||||
TEST_ONE_SHIFT(0, 15, s16, 0, false);
|
||||
TEST_ONE_SHIFT(0, 31, int, 0, false);
|
||||
TEST_ONE_SHIFT(0, 31, s32, 0, false);
|
||||
TEST_ONE_SHIFT(0, 63, s64, 0, false);
|
||||
|
||||
kunit_info(test, "%d shift tests finished\n", count);
|
||||
#undef TEST_ONE_SHIFT
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -502,7 +467,7 @@ static int __init test_overflow_shift(void)
|
||||
#define TEST_SIZE (5 * 4096)
|
||||
|
||||
#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 b = (SIZE_MAX / TEST_SIZE) + 1; \
|
||||
@ -510,30 +475,24 @@ static int __init test_ ## func (void *arg) \
|
||||
\
|
||||
/* Tiny allocation test. */ \
|
||||
ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, 1);\
|
||||
if (!ptr) { \
|
||||
pr_warn(#func " failed regular allocation?!\n"); \
|
||||
return 1; \
|
||||
} \
|
||||
KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \
|
||||
#func " failed regular allocation?!\n"); \
|
||||
free ## want_arg (free_func, arg, ptr); \
|
||||
\
|
||||
/* Wrapped allocation test. */ \
|
||||
ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \
|
||||
a * b); \
|
||||
if (!ptr) { \
|
||||
pr_warn(#func " unexpectedly failed bad wrapping?!\n"); \
|
||||
return 1; \
|
||||
} \
|
||||
KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \
|
||||
#func " unexpectedly failed bad wrapping?!\n"); \
|
||||
free ## want_arg (free_func, arg, ptr); \
|
||||
\
|
||||
/* Saturated allocation test. */ \
|
||||
ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \
|
||||
array_size(a, b)); \
|
||||
if (ptr) { \
|
||||
pr_warn(#func " missed saturation!\n"); \
|
||||
KUNIT_FAIL(test, #func " missed saturation!\n"); \
|
||||
free ## want_arg (free_func, arg, ptr); \
|
||||
return 1; \
|
||||
} \
|
||||
return 0; \
|
||||
}
|
||||
|
||||
/*
|
||||
@ -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_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";
|
||||
struct device *dev;
|
||||
int count = 0;
|
||||
int err = 0;
|
||||
|
||||
#define check_allocation_overflow(alloc) ({ \
|
||||
#define check_allocation_overflow(alloc) do { \
|
||||
count++; \
|
||||
test_ ## alloc(dev); \
|
||||
})
|
||||
test_ ## alloc(test, dev); \
|
||||
} while (0)
|
||||
|
||||
/* Create dummy device for devm_kmalloc()-family tests. */
|
||||
dev = root_device_register(device_name);
|
||||
if (IS_ERR(dev)) {
|
||||
pr_warn("Cannot register test device\n");
|
||||
return 1;
|
||||
}
|
||||
KUNIT_ASSERT_FALSE_MSG(test, IS_ERR(dev),
|
||||
"Cannot register test device\n");
|
||||
|
||||
err |= check_allocation_overflow(kmalloc);
|
||||
err |= check_allocation_overflow(kmalloc_node);
|
||||
err |= check_allocation_overflow(kzalloc);
|
||||
err |= check_allocation_overflow(kzalloc_node);
|
||||
err |= check_allocation_overflow(__vmalloc);
|
||||
err |= check_allocation_overflow(kvmalloc);
|
||||
err |= check_allocation_overflow(kvmalloc_node);
|
||||
err |= check_allocation_overflow(kvzalloc);
|
||||
err |= check_allocation_overflow(kvzalloc_node);
|
||||
err |= check_allocation_overflow(devm_kmalloc);
|
||||
err |= check_allocation_overflow(devm_kzalloc);
|
||||
check_allocation_overflow(kmalloc);
|
||||
check_allocation_overflow(kmalloc_node);
|
||||
check_allocation_overflow(kzalloc);
|
||||
check_allocation_overflow(kzalloc_node);
|
||||
check_allocation_overflow(__vmalloc);
|
||||
check_allocation_overflow(kvmalloc);
|
||||
check_allocation_overflow(kvmalloc_node);
|
||||
check_allocation_overflow(kvzalloc);
|
||||
check_allocation_overflow(kvzalloc_node);
|
||||
check_allocation_overflow(devm_kmalloc);
|
||||
check_allocation_overflow(devm_kzalloc);
|
||||
|
||||
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
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
struct __test_flex_array {
|
||||
@ -600,127 +553,118 @@ struct __test_flex_array {
|
||||
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. */
|
||||
u8 ce_array[struct_size((struct __test_flex_array *)0, data, 55)];
|
||||
struct __test_flex_array *obj;
|
||||
int count = 0;
|
||||
int err = 0;
|
||||
int var;
|
||||
volatile int unconst = 0;
|
||||
|
||||
/* Verify constant expression against runtime version. */
|
||||
var = 55;
|
||||
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...) ({ \
|
||||
bool __failure = false; \
|
||||
size_t _r; \
|
||||
\
|
||||
_r = func(args); \
|
||||
if (_r != (expected)) { \
|
||||
pr_warn("expected " #func "(" #args ") " \
|
||||
"to return %zu but got %zu instead\n", \
|
||||
(size_t)(expected), _r); \
|
||||
__failure = true; \
|
||||
} \
|
||||
#define check_one_size_helper(expected, func, args...) do { \
|
||||
size_t _r = func(args); \
|
||||
KUNIT_EXPECT_EQ_MSG(test, _r, expected, \
|
||||
"expected " #func "(" #args ") to return %zu but got %zu instead\n", \
|
||||
(size_t)(expected), _r); \
|
||||
count++; \
|
||||
__failure; \
|
||||
})
|
||||
} while (0)
|
||||
|
||||
var = 4;
|
||||
err |= check_one_size_helper(20, size_mul, var++, 5);
|
||||
err |= check_one_size_helper(20, size_mul, 4, var++);
|
||||
err |= check_one_size_helper(0, size_mul, 0, 3);
|
||||
err |= check_one_size_helper(0, size_mul, 3, 0);
|
||||
err |= check_one_size_helper(6, size_mul, 2, 3);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 1);
|
||||
err |= 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(20, size_mul, var++, 5);
|
||||
check_one_size_helper(20, size_mul, 4, var++);
|
||||
check_one_size_helper(0, size_mul, 0, 3);
|
||||
check_one_size_helper(0, size_mul, 3, 0);
|
||||
check_one_size_helper(6, size_mul, 2, 3);
|
||||
check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 1);
|
||||
check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 3);
|
||||
check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, -3);
|
||||
|
||||
var = 4;
|
||||
err |= check_one_size_helper(9, size_add, var++, 5);
|
||||
err |= check_one_size_helper(9, size_add, 4, var++);
|
||||
err |= check_one_size_helper(9, size_add, 9, 0);
|
||||
err |= check_one_size_helper(9, size_add, 0, 9);
|
||||
err |= check_one_size_helper(5, size_add, 2, 3);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 1);
|
||||
err |= 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(9, size_add, var++, 5);
|
||||
check_one_size_helper(9, size_add, 4, var++);
|
||||
check_one_size_helper(9, size_add, 9, 0);
|
||||
check_one_size_helper(9, size_add, 0, 9);
|
||||
check_one_size_helper(5, size_add, 2, 3);
|
||||
check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 1);
|
||||
check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 3);
|
||||
check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, -3);
|
||||
|
||||
var = 4;
|
||||
err |= check_one_size_helper(1, size_sub, var--, 3);
|
||||
err |= check_one_size_helper(1, size_sub, 4, var--);
|
||||
err |= check_one_size_helper(1, size_sub, 3, 2);
|
||||
err |= check_one_size_helper(9, size_sub, 9, 0);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_sub, 9, -3);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_sub, 0, 9);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_sub, 2, 3);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 0);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 10);
|
||||
err |= check_one_size_helper(SIZE_MAX, size_sub, 0, SIZE_MAX);
|
||||
err |= 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);
|
||||
err |= 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, var--, 3);
|
||||
check_one_size_helper(1, size_sub, 4, var--);
|
||||
check_one_size_helper(1, size_sub, 3, 2);
|
||||
check_one_size_helper(9, size_sub, 9, 0);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, 9, -3);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, 0, 9);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, 2, 3);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 0);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 10);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, 0, SIZE_MAX);
|
||||
check_one_size_helper(SIZE_MAX, size_sub, 14, SIZE_MAX);
|
||||
check_one_size_helper(SIZE_MAX - 2, size_sub, SIZE_MAX - 1, 1);
|
||||
check_one_size_helper(SIZE_MAX - 4, size_sub, SIZE_MAX - 1, 3);
|
||||
check_one_size_helper(1, size_sub, SIZE_MAX - 1, -3);
|
||||
|
||||
var = 4;
|
||||
err |= check_one_size_helper(4 * sizeof(*obj->data),
|
||||
flex_array_size, obj, data, var++);
|
||||
err |= check_one_size_helper(5 * sizeof(*obj->data),
|
||||
flex_array_size, obj, data, var++);
|
||||
err |= check_one_size_helper(0, flex_array_size, obj, data, 0 + unconst);
|
||||
err |= check_one_size_helper(sizeof(*obj->data),
|
||||
flex_array_size, obj, data, 1 + unconst);
|
||||
err |= check_one_size_helper(7 * sizeof(*obj->data),
|
||||
flex_array_size, obj, data, 7 + unconst);
|
||||
err |= check_one_size_helper(SIZE_MAX,
|
||||
flex_array_size, obj, data, -1 + unconst);
|
||||
err |= check_one_size_helper(SIZE_MAX,
|
||||
flex_array_size, obj, data, SIZE_MAX - 4 + unconst);
|
||||
check_one_size_helper(4 * sizeof(*obj->data),
|
||||
flex_array_size, obj, data, var++);
|
||||
check_one_size_helper(5 * sizeof(*obj->data),
|
||||
flex_array_size, obj, data, var++);
|
||||
check_one_size_helper(0, flex_array_size, obj, data, 0 + unconst);
|
||||
check_one_size_helper(sizeof(*obj->data),
|
||||
flex_array_size, obj, data, 1 + unconst);
|
||||
check_one_size_helper(7 * sizeof(*obj->data),
|
||||
flex_array_size, obj, data, 7 + unconst);
|
||||
check_one_size_helper(SIZE_MAX,
|
||||
flex_array_size, obj, data, -1 + unconst);
|
||||
check_one_size_helper(SIZE_MAX,
|
||||
flex_array_size, obj, data, SIZE_MAX - 4 + unconst);
|
||||
|
||||
var = 4;
|
||||
err |= check_one_size_helper(sizeof(*obj) + (4 * sizeof(*obj->data)),
|
||||
struct_size, obj, data, var++);
|
||||
err |= check_one_size_helper(sizeof(*obj) + (5 * sizeof(*obj->data)),
|
||||
struct_size, obj, data, var++);
|
||||
err |= check_one_size_helper(sizeof(*obj), struct_size, obj, data, 0 + unconst);
|
||||
err |= check_one_size_helper(sizeof(*obj) + sizeof(*obj->data),
|
||||
struct_size, obj, data, 1 + unconst);
|
||||
err |= check_one_size_helper(SIZE_MAX,
|
||||
struct_size, obj, data, -3 + unconst);
|
||||
err |= check_one_size_helper(SIZE_MAX,
|
||||
struct_size, obj, data, SIZE_MAX - 3 + unconst);
|
||||
check_one_size_helper(sizeof(*obj) + (4 * sizeof(*obj->data)),
|
||||
struct_size, obj, data, var++);
|
||||
check_one_size_helper(sizeof(*obj) + (5 * sizeof(*obj->data)),
|
||||
struct_size, obj, data, var++);
|
||||
check_one_size_helper(sizeof(*obj), struct_size, obj, data, 0 + unconst);
|
||||
check_one_size_helper(sizeof(*obj) + sizeof(*obj->data),
|
||||
struct_size, obj, data, 1 + unconst);
|
||||
check_one_size_helper(SIZE_MAX,
|
||||
struct_size, obj, data, -3 + unconst);
|
||||
check_one_size_helper(SIZE_MAX,
|
||||
struct_size, obj, data, SIZE_MAX - 3 + unconst);
|
||||
|
||||
pr_info("%d overflow size helper tests finished\n", count);
|
||||
|
||||
return err;
|
||||
kunit_info(test, "%d overflow size helper tests finished\n", count);
|
||||
#undef check_one_size_helper
|
||||
}
|
||||
|
||||
static int __init test_module_init(void)
|
||||
{
|
||||
int err = 0;
|
||||
static struct kunit_case overflow_test_cases[] = {
|
||||
KUNIT_CASE(u8_overflow_test),
|
||||
KUNIT_CASE(s8_overflow_test),
|
||||
KUNIT_CASE(u16_overflow_test),
|
||||
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),
|
||||
{}
|
||||
};
|
||||
|
||||
err |= test_overflow_calculation();
|
||||
err |= test_overflow_shift();
|
||||
err |= test_overflow_size_helpers();
|
||||
err |= test_overflow_allocation();
|
||||
static struct kunit_suite overflow_test_suite = {
|
||||
.name = "overflow",
|
||||
.test_cases = overflow_test_cases,
|
||||
};
|
||||
|
||||
if (err) {
|
||||
pr_warn("FAIL!\n");
|
||||
err = -EINVAL;
|
||||
} else {
|
||||
pr_info("all tests passed\n");
|
||||
}
|
||||
kunit_test_suite(overflow_test_suite);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __exit test_module_exit(void)
|
||||
{ }
|
||||
|
||||
module_init(test_module_init);
|
||||
module_exit(test_module_exit);
|
||||
MODULE_LICENSE("Dual MIT/GPL");
|
Loading…
Reference in New Issue
Block a user