d2912cb15bdda (Thomas Gleixner 2019-06-04 10:11:33 +0200 1) // SPDX-License-Identifier: GPL-2.0-only
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 2) /*
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 3) *
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 4) * Copyright (c) 2014 Samsung Electronics Co., Ltd.
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 5) * Author: Andrey Ryabinin <a.ryabinin@samsung.com>
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 6) */
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 7)
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 8) #include <linux/bitops.h>
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 9) #include <linux/delay.h>
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 10) #include <linux/kasan.h>
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 11) #include <linux/kernel.h>
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 12) #include <linux/mm.h>
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 13) #include <linux/mman.h>
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 14) #include <linux/module.h>
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 15) #include <linux/printk.h>
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 16) #include <linux/random.h>
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 17) #include <linux/slab.h>
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 18) #include <linux/string.h>
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 19) #include <linux/uaccess.h>
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 20) #include <linux/io.h>
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 21) #include <linux/vmalloc.h>
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 22)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 23) #include <asm/page.h>
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 24)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 25) #include <kunit/test.h>
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 26)
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 27) #include "../mm/kasan/kasan.h"
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 28)
1f600626b3a9b (Andrey Konovalov 2020-12-22 12:00:24 -0800 29) #define OOB_TAG_OFF (IS_ENABLED(CONFIG_KASAN_GENERIC) ? 0 : KASAN_GRANULE_SIZE)
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 30)
adb72ae1915db (Daniel Axtens 2020-06-03 15:56:43 -0700 31) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 32) * Some tests use these global variables to store return values from function
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 33) * calls that could otherwise be eliminated by the compiler as dead code.
adb72ae1915db (Daniel Axtens 2020-06-03 15:56:43 -0700 34) */
adb72ae1915db (Daniel Axtens 2020-06-03 15:56:43 -0700 35) void *kasan_ptr_result;
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 36) int kasan_int_result;
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 37)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 38) static struct kunit_resource resource;
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 39) static struct kunit_kasan_expectation fail_data;
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 40) static bool multishot;
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 41)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 42) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 43) * Temporarily enable multi-shot mode. Otherwise, KASAN would only report the
f05842cfb9ae2 (Andrey Konovalov 2021-02-24 12:05:26 -0800 44) * first detected bug and panic the kernel if panic_on_warn is enabled. For
f05842cfb9ae2 (Andrey Konovalov 2021-02-24 12:05:26 -0800 45) * hardware tag-based KASAN also allow tag checking to be reenabled for each
f05842cfb9ae2 (Andrey Konovalov 2021-02-24 12:05:26 -0800 46) * test, see the comment for KUNIT_EXPECT_KASAN_FAIL().
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 47) */
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 48) static int kasan_test_init(struct kunit *test)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 49) {
d82dc3a40d12c (Andrey Konovalov 2021-02-24 12:06:02 -0800 50) if (!kasan_enabled()) {
d82dc3a40d12c (Andrey Konovalov 2021-02-24 12:06:02 -0800 51) kunit_err(test, "can't run KASAN tests with KASAN disabled");
d82dc3a40d12c (Andrey Konovalov 2021-02-24 12:06:02 -0800 52) return -1;
d82dc3a40d12c (Andrey Konovalov 2021-02-24 12:06:02 -0800 53) }
d82dc3a40d12c (Andrey Konovalov 2021-02-24 12:06:02 -0800 54)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 55) multishot = kasan_save_enable_multi_shot();
f05842cfb9ae2 (Andrey Konovalov 2021-02-24 12:05:26 -0800 56) kasan_set_tagging_report_once(false);
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 57) fail_data.report_found = false;
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 58) fail_data.report_expected = false;
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 59) kunit_add_named_resource(test, NULL, NULL, &resource,
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 60) "kasan_data", &fail_data);
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 61) return 0;
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 62) }
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 63)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 64) static void kasan_test_exit(struct kunit *test)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 65) {
f05842cfb9ae2 (Andrey Konovalov 2021-02-24 12:05:26 -0800 66) kasan_set_tagging_report_once(true);
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 67) kasan_restore_multi_shot(multishot);
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 68) KUNIT_EXPECT_FALSE(test, fail_data.report_found);
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 69) }
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 70)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 71) /**
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 72) * KUNIT_EXPECT_KASAN_FAIL() - check that the executed expression produces a
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 73) * KASAN report; causes a test failure otherwise. This relies on a KUnit
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 74) * resource named "kasan_data". Do not use this name for KUnit resources
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 75) * outside of KASAN tests.
f05842cfb9ae2 (Andrey Konovalov 2021-02-24 12:05:26 -0800 76) *
e80a76aa1a910 (Andrey Konovalov 2021-03-15 13:20:19 +0000 77) * For hardware tag-based KASAN in sync mode, when a tag fault happens, tag
e80a76aa1a910 (Andrey Konovalov 2021-03-15 13:20:19 +0000 78) * checking is auto-disabled. When this happens, this test handler reenables
e80a76aa1a910 (Andrey Konovalov 2021-03-15 13:20:19 +0000 79) * tag checking. As tag checking can be only disabled or enabled per CPU,
e80a76aa1a910 (Andrey Konovalov 2021-03-15 13:20:19 +0000 80) * this handler disables migration (preemption).
2e4bde6a1e3a3 (Andrey Konovalov 2021-02-24 12:05:34 -0800 81) *
2e4bde6a1e3a3 (Andrey Konovalov 2021-02-24 12:05:34 -0800 82) * Since the compiler doesn't see that the expression can change the fail_data
2e4bde6a1e3a3 (Andrey Konovalov 2021-02-24 12:05:34 -0800 83) * fields, it can reorder or optimize away the accesses to those fields.
2e4bde6a1e3a3 (Andrey Konovalov 2021-02-24 12:05:34 -0800 84) * Use READ/WRITE_ONCE() for the accesses and compiler barriers around the
2e4bde6a1e3a3 (Andrey Konovalov 2021-02-24 12:05:34 -0800 85) * expression to prevent that.
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 86) *
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 87) * In between KUNIT_EXPECT_KASAN_FAIL checks, fail_data.report_found is kept as
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 88) * false. This allows detecting KASAN reports that happen outside of the checks
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 89) * by asserting !fail_data.report_found at the start of KUNIT_EXPECT_KASAN_FAIL
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 90) * and in kasan_test_exit.
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 91) */
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 92) #define KUNIT_EXPECT_KASAN_FAIL(test, expression) do { \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 93) if (IS_ENABLED(CONFIG_KASAN_HW_TAGS) && \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 94) !kasan_async_mode_enabled()) \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 95) migrate_disable(); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 96) KUNIT_EXPECT_FALSE(test, READ_ONCE(fail_data.report_found)); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 97) WRITE_ONCE(fail_data.report_expected, true); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 98) barrier(); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 99) expression; \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 100) barrier(); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 101) KUNIT_EXPECT_EQ(test, \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 102) READ_ONCE(fail_data.report_expected), \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 103) READ_ONCE(fail_data.report_found)); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 104) if (IS_ENABLED(CONFIG_KASAN_HW_TAGS)) { \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 105) if (READ_ONCE(fail_data.report_found)) \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 106) kasan_enable_tagging_sync(); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 107) migrate_enable(); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 108) } \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 109) WRITE_ONCE(fail_data.report_found, false); \
99734b535d9bf (Andrey Konovalov 2021-04-29 23:00:49 -0700 110) WRITE_ONCE(fail_data.report_expected, false); \
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 111) } while (0)
83c4e7a0363bd (Patricia Alfonso 2020-10-13 16:55:02 -0700 112)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 113) #define KASAN_TEST_NEEDS_CONFIG_ON(test, config) do { \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 114) if (!IS_ENABLED(config)) { \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 115) kunit_info((test), "skipping, " #config " required"); \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 116) return; \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 117) } \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 118) } while (0)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 119)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 120) #define KASAN_TEST_NEEDS_CONFIG_OFF(test, config) do { \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 121) if (IS_ENABLED(config)) { \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 122) kunit_info((test), "skipping, " #config " enabled"); \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 123) return; \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 124) } \
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 125) } while (0)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 126)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 127) static void kmalloc_oob_right(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 128) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 129) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 130) size_t size = 123;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 131)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 132) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 133) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 134)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 135) KUNIT_EXPECT_KASAN_FAIL(test, ptr[size + OOB_TAG_OFF] = 'x');
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 136) kfree(ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 137) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 138)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 139) static void kmalloc_oob_left(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 140) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 141) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 142) size_t size = 15;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 143)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 144) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 145) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 146)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 147) KUNIT_EXPECT_KASAN_FAIL(test, *ptr = *(ptr - 1));
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 148) kfree(ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 149) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 150)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 151) static void kmalloc_node_oob_right(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 152) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 153) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 154) size_t size = 4096;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 155)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 156) ptr = kmalloc_node(size, GFP_KERNEL, 0);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 157) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 158)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 159) KUNIT_EXPECT_KASAN_FAIL(test, ptr[size] = 0);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 160) kfree(ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 161) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 162)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 163) /*
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 164) * These kmalloc_pagealloc_* tests try allocating a memory chunk that doesn't
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 165) * fit into a slab cache and therefore is allocated via the page allocator
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 166) * fallback. Since this kind of fallback is only implemented for SLUB, these
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 167) * tests are limited to that allocator.
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 168) */
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 169) static void kmalloc_pagealloc_oob_right(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 170) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 171) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 172) size_t size = KMALLOC_MAX_CACHE_SIZE + 10;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 173)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 174) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 175)
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 176) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 177) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 178)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 179) KUNIT_EXPECT_KASAN_FAIL(test, ptr[size + OOB_TAG_OFF] = 0);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 180)
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 181) kfree(ptr);
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 182) }
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 183)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 184) static void kmalloc_pagealloc_uaf(struct kunit *test)
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 185) {
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 186) char *ptr;
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 187) size_t size = KMALLOC_MAX_CACHE_SIZE + 10;
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 188)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 189) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 190)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 191) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 192) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 193) kfree(ptr);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 194)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 195) KUNIT_EXPECT_KASAN_FAIL(test, ptr[0] = 0);
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 196) }
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 197)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 198) static void kmalloc_pagealloc_invalid_free(struct kunit *test)
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 199) {
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 200) char *ptr;
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 201) size_t size = KMALLOC_MAX_CACHE_SIZE + 10;
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 202)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 203) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 204)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 205) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 206) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 207)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 208) KUNIT_EXPECT_KASAN_FAIL(test, kfree(ptr + 1));
47adccce3e8a3 (Dmitry Vyukov 2018-02-06 15:36:23 -0800 209) }
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 210)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 211) static void pagealloc_oob_right(struct kunit *test)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 212) {
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 213) char *ptr;
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 214) struct page *pages;
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 215) size_t order = 4;
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 216) size_t size = (1UL << (PAGE_SHIFT + order));
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 217)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 218) /*
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 219) * With generic KASAN page allocations have no redzones, thus
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 220) * out-of-bounds detection is not guaranteed.
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 221) * See https://bugzilla.kernel.org/show_bug.cgi?id=210503.
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 222) */
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 223) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 224)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 225) pages = alloc_pages(GFP_KERNEL, order);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 226) ptr = page_address(pages);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 227) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 228)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 229) KUNIT_EXPECT_KASAN_FAIL(test, ptr[size] = 0);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 230) free_pages((unsigned long)ptr, order);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 231) }
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 232)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 233) static void pagealloc_uaf(struct kunit *test)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 234) {
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 235) char *ptr;
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 236) struct page *pages;
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 237) size_t order = 4;
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 238)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 239) pages = alloc_pages(GFP_KERNEL, order);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 240) ptr = page_address(pages);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 241) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 242) free_pages((unsigned long)ptr, order);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 243)
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 244) KUNIT_EXPECT_KASAN_FAIL(test, ptr[0] = 0);
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 245) }
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 246)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 247) static void kmalloc_large_oob_right(struct kunit *test)
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 248) {
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 249) char *ptr;
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 250) size_t size = KMALLOC_MAX_CACHE_SIZE - 256;
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 251)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 252) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 253) * Allocate a chunk that is large enough, but still fits into a slab
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 254) * and does not trigger the page allocator fallback in SLUB.
e6e8379c876de (Alexander Potapenko 2016-03-25 14:21:56 -0700 255) */
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 256) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 257) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 258)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 259) KUNIT_EXPECT_KASAN_FAIL(test, ptr[size] = 0);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 260) kfree(ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 261) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 262)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 263) static void krealloc_more_oob_helper(struct kunit *test,
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 264) size_t size1, size_t size2)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 265) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 266) char *ptr1, *ptr2;
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 267) size_t middle;
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 268)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 269) KUNIT_ASSERT_LT(test, size1, size2);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 270) middle = size1 + (size2 - size1) / 2;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 271)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 272) ptr1 = kmalloc(size1, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 273) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 274)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 275) ptr2 = krealloc(ptr1, size2, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 276) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 277)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 278) /* All offsets up to size2 must be accessible. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 279) ptr2[size1 - 1] = 'x';
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 280) ptr2[size1] = 'x';
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 281) ptr2[middle] = 'x';
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 282) ptr2[size2 - 1] = 'x';
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 283)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 284) /* Generic mode is precise, so unaligned size2 must be inaccessible. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 285) if (IS_ENABLED(CONFIG_KASAN_GENERIC))
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 286) KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size2] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 287)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 288) /* For all modes first aligned offset after size2 must be inaccessible. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 289) KUNIT_EXPECT_KASAN_FAIL(test,
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 290) ptr2[round_up(size2, KASAN_GRANULE_SIZE)] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 291)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 292) kfree(ptr2);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 293) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 294)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 295) static void krealloc_less_oob_helper(struct kunit *test,
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 296) size_t size1, size_t size2)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 297) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 298) char *ptr1, *ptr2;
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 299) size_t middle;
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 300)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 301) KUNIT_ASSERT_LT(test, size2, size1);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 302) middle = size2 + (size1 - size2) / 2;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 303)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 304) ptr1 = kmalloc(size1, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 305) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 306)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 307) ptr2 = krealloc(ptr1, size2, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 308) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 309)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 310) /* Must be accessible for all modes. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 311) ptr2[size2 - 1] = 'x';
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 312)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 313) /* Generic mode is precise, so unaligned size2 must be inaccessible. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 314) if (IS_ENABLED(CONFIG_KASAN_GENERIC))
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 315) KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size2] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 316)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 317) /* For all modes first aligned offset after size2 must be inaccessible. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 318) KUNIT_EXPECT_KASAN_FAIL(test,
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 319) ptr2[round_up(size2, KASAN_GRANULE_SIZE)] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 320)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 321) /*
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 322) * For all modes all size2, middle, and size1 should land in separate
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 323) * granules and thus the latter two offsets should be inaccessible.
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 324) */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 325) KUNIT_EXPECT_LE(test, round_up(size2, KASAN_GRANULE_SIZE),
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 326) round_down(middle, KASAN_GRANULE_SIZE));
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 327) KUNIT_EXPECT_LE(test, round_up(middle, KASAN_GRANULE_SIZE),
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 328) round_down(size1, KASAN_GRANULE_SIZE));
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 329) KUNIT_EXPECT_KASAN_FAIL(test, ptr2[middle] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 330) KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size1 - 1] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 331) KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size1] = 'x');
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 332)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 333) kfree(ptr2);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 334) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 335)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 336) static void krealloc_more_oob(struct kunit *test)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 337) {
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 338) krealloc_more_oob_helper(test, 201, 235);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 339) }
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 340)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 341) static void krealloc_less_oob(struct kunit *test)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 342) {
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 343) krealloc_less_oob_helper(test, 235, 201);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 344) }
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 345)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 346) static void krealloc_pagealloc_more_oob(struct kunit *test)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 347) {
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 348) /* page_alloc fallback in only implemented for SLUB. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 349) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 350)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 351) krealloc_more_oob_helper(test, KMALLOC_MAX_CACHE_SIZE + 201,
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 352) KMALLOC_MAX_CACHE_SIZE + 235);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 353) }
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 354)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 355) static void krealloc_pagealloc_less_oob(struct kunit *test)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 356) {
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 357) /* page_alloc fallback in only implemented for SLUB. */
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 358) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 359)
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 360) krealloc_less_oob_helper(test, KMALLOC_MAX_CACHE_SIZE + 235,
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 361) KMALLOC_MAX_CACHE_SIZE + 201);
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 362) }
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 363)
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 364) /*
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 365) * Check that krealloc() detects a use-after-free, returns NULL,
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 366) * and doesn't unpoison the freed object.
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 367) */
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 368) static void krealloc_uaf(struct kunit *test)
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 369) {
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 370) char *ptr1, *ptr2;
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 371) int size1 = 201;
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 372) int size2 = 235;
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 373)
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 374) ptr1 = kmalloc(size1, GFP_KERNEL);
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 375) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 376) kfree(ptr1);
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 377)
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 378) KUNIT_EXPECT_KASAN_FAIL(test, ptr2 = krealloc(ptr1, size2, GFP_KERNEL));
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 379) KUNIT_ASSERT_PTR_EQ(test, (void *)ptr2, NULL);
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 380) KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)ptr1);
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 381) }
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 382)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 383) static void kmalloc_oob_16(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 384) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 385) struct {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 386) u64 words[2];
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 387) } *ptr1, *ptr2;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 388)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 389) /* This test is specifically crafted for the generic mode. */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 390) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 391)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 392) ptr1 = kmalloc(sizeof(*ptr1) - 3, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 393) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 394)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 395) ptr2 = kmalloc(sizeof(*ptr2), GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 396) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 397)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 398) KUNIT_EXPECT_KASAN_FAIL(test, *ptr1 = *ptr2);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 399) kfree(ptr1);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 400) kfree(ptr2);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 401) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 402)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 403) static void kmalloc_uaf_16(struct kunit *test)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 404) {
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 405) struct {
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 406) u64 words[2];
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 407) } *ptr1, *ptr2;
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 408)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 409) ptr1 = kmalloc(sizeof(*ptr1), GFP_KERNEL);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 410) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 411)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 412) ptr2 = kmalloc(sizeof(*ptr2), GFP_KERNEL);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 413) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 414) kfree(ptr2);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 415)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 416) KUNIT_EXPECT_KASAN_FAIL(test, *ptr1 = *ptr2);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 417) kfree(ptr1);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 418) }
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 419)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 420) static void kmalloc_oob_memset_2(struct kunit *test)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 421) {
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 422) char *ptr;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 423) size_t size = 8;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 424)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 425) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 426) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 427)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 428) KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + 7 + OOB_TAG_OFF, 0, 2));
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 429) kfree(ptr);
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 430) }
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 431)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 432) static void kmalloc_oob_memset_4(struct kunit *test)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 433) {
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 434) char *ptr;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 435) size_t size = 8;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 436)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 437) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 438) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 439)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 440) KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + 5 + OOB_TAG_OFF, 0, 4));
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 441) kfree(ptr);
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 442) }
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 443)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 444)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 445) static void kmalloc_oob_memset_8(struct kunit *test)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 446) {
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 447) char *ptr;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 448) size_t size = 8;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 449)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 450) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 451) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 452)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 453) KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + 1 + OOB_TAG_OFF, 0, 8));
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 454) kfree(ptr);
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 455) }
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 456)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 457) static void kmalloc_oob_memset_16(struct kunit *test)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 458) {
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 459) char *ptr;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 460) size_t size = 16;
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 461)
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 462) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 463) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 464)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 465) KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + 1 + OOB_TAG_OFF, 0, 16));
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 466) kfree(ptr);
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 467) }
f523e737c08f5 (Wang Long 2015-11-05 18:51:15 -0800 468)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 469) static void kmalloc_oob_in_memset(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 470) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 471) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 472) size_t size = 666;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 473)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 474) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 475) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
f33a01492a24a (Walter Wu 2020-08-06 23:24:54 -0700 476)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 477) KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr, 0, size + 5 + OOB_TAG_OFF));
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 478) kfree(ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 479) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 480)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 481) static void kmalloc_memmove_invalid_size(struct kunit *test)
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 482) {
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 483) char *ptr;
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 484) size_t size = 64;
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 485) volatile size_t invalid_size = -2;
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 486)
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 487) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 488) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 489)
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 490) memset((char *)ptr, 0, 64);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 491)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 492) KUNIT_EXPECT_KASAN_FAIL(test,
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 493) memmove((char *)ptr, (char *)ptr + 4, invalid_size));
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 494) kfree(ptr);
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 495) }
98f3b56fa62a6 (Walter Wu 2020-04-01 21:09:40 -0700 496)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 497) static void kmalloc_uaf(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 498) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 499) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 500) size_t size = 10;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 501)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 502) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 503) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 504)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 505) kfree(ptr);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 506) KUNIT_EXPECT_KASAN_FAIL(test, *(ptr + 8) = 'x');
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 507) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 508)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 509) static void kmalloc_uaf_memset(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 510) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 511) char *ptr;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 512) size_t size = 33;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 513)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 514) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 515) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 516)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 517) kfree(ptr);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 518) KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr, 0, size));
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 519) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 520)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 521) static void kmalloc_uaf2(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 522) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 523) char *ptr1, *ptr2;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 524) size_t size = 43;
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 525) int counter = 0;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 526)
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 527) again:
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 528) ptr1 = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 529) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 530)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 531) kfree(ptr1);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 532)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 533) ptr2 = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 534) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 535)
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 536) /*
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 537) * For tag-based KASAN ptr1 and ptr2 tags might happen to be the same.
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 538) * Allow up to 16 attempts at generating different tags.
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 539) */
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 540) if (!IS_ENABLED(CONFIG_KASAN_GENERIC) && ptr1 == ptr2 && counter++ < 16) {
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 541) kfree(ptr2);
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 542) goto again;
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 543) }
1b1df4c4e2576 (Andrey Konovalov 2021-02-24 12:05:38 -0800 544)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 545) KUNIT_EXPECT_KASAN_FAIL(test, ptr1[40] = 'x');
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 546) KUNIT_EXPECT_PTR_NE(test, ptr1, ptr2);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 547)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 548) kfree(ptr2);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 549) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 550)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 551) static void kfree_via_page(struct kunit *test)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 552) {
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 553) char *ptr;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 554) size_t size = 8;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 555) struct page *page;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 556) unsigned long offset;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 557)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 558) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 559) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 560)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 561) page = virt_to_page(ptr);
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 562) offset = offset_in_page(ptr);
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 563) kfree(page_address(page) + offset);
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 564) }
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 565)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 566) static void kfree_via_phys(struct kunit *test)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 567) {
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 568) char *ptr;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 569) size_t size = 8;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 570) phys_addr_t phys;
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 571)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 572) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 573) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 574)
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 575) phys = virt_to_phys(ptr);
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 576) kfree(phys_to_virt(phys));
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 577) }
b92a953cb7f72 (Mark Rutland 2019-09-23 15:34:16 -0700 578)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 579) static void kmem_cache_oob(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 580) {
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 581) char *p;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 582) size_t size = 200;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 583) struct kmem_cache *cache;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 584)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 585) cache = kmem_cache_create("test_cache", size, 0, 0, NULL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 586) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 587)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 588) p = kmem_cache_alloc(cache, GFP_KERNEL);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 589) if (!p) {
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 590) kunit_err(test, "Allocation failed: %s\n", __func__);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 591) kmem_cache_destroy(cache);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 592) return;
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 593) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 594)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 595) KUNIT_EXPECT_KASAN_FAIL(test, *p = p[size + OOB_TAG_OFF]);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 596)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 597) kmem_cache_free(cache, p);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 598) kmem_cache_destroy(cache);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 599) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 600)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 601) static void kmem_cache_accounted(struct kunit *test)
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 602) {
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 603) int i;
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 604) char *p;
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 605) size_t size = 200;
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 606) struct kmem_cache *cache;
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 607)
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 608) cache = kmem_cache_create("test_cache", size, 0, SLAB_ACCOUNT, NULL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 609) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 610)
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 611) /*
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 612) * Several allocations with a delay to allow for lazy per memcg kmem
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 613) * cache creation.
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 614) */
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 615) for (i = 0; i < 5; i++) {
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 616) p = kmem_cache_alloc(cache, GFP_KERNEL);
dc2bf000a2848 (Markus Elfring 2017-11-17 15:28:00 -0800 617) if (!p)
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 618) goto free_cache;
dc2bf000a2848 (Markus Elfring 2017-11-17 15:28:00 -0800 619)
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 620) kmem_cache_free(cache, p);
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 621) msleep(100);
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 622) }
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 623)
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 624) free_cache:
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 625) kmem_cache_destroy(cache);
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 626) }
0386bf385d9db (Greg Thelen 2017-02-24 15:00:08 -0800 627)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 628) static void kmem_cache_bulk(struct kunit *test)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 629) {
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 630) struct kmem_cache *cache;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 631) size_t size = 200;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 632) char *p[10];
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 633) bool ret;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 634) int i;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 635)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 636) cache = kmem_cache_create("test_cache", size, 0, 0, NULL);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 637) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 638)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 639) ret = kmem_cache_alloc_bulk(cache, GFP_KERNEL, ARRAY_SIZE(p), (void **)&p);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 640) if (!ret) {
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 641) kunit_err(test, "Allocation failed: %s\n", __func__);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 642) kmem_cache_destroy(cache);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 643) return;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 644) }
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 645)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 646) for (i = 0; i < ARRAY_SIZE(p); i++)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 647) p[i][0] = p[i][size - 1] = 42;
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 648)
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 649) kmem_cache_free_bulk(cache, ARRAY_SIZE(p), (void **)&p);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 650) kmem_cache_destroy(cache);
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 651) }
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 652)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 653) static char global_array[10];
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 654)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 655) static void kasan_global_oob(struct kunit *test)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 656) {
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 657) /*
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 658) * Deliberate out-of-bounds access. To prevent CONFIG_UBSAN_LOCAL_BOUNDS
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 659) * from failing here and panicing the kernel, access the array via a
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 660) * volatile pointer, which will prevent the compiler from being able to
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 661) * determine the array bounds.
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 662) *
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 663) * This access uses a volatile pointer to char (char *volatile) rather
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 664) * than the more conventional pointer to volatile char (volatile char *)
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 665) * because we want to prevent the compiler from making inferences about
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 666) * the pointer itself (i.e. its array bounds), not the data that it
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 667) * refers to.
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 668) */
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 669) char *volatile array = global_array;
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 670) char *p = &array[ARRAY_SIZE(global_array) + 3];
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 671)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 672) /* Only generic mode instruments globals. */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 673) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 674)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 675) KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 676) }
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 677)
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 678) /* Check that ksize() makes the whole object accessible. */
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 679) static void ksize_unpoisons_memory(struct kunit *test)
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 680) {
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 681) char *ptr;
48c232395431c (Colin Ian King 2018-02-06 15:36:48 -0800 682) size_t size = 123, real_size;
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 683)
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 684) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 685) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 686) real_size = ksize(ptr);
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 687)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 688) /* This access shouldn't trigger a KASAN report. */
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 689) ptr[size] = 'x';
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 690)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 691) /* This one must. */
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 692) KUNIT_EXPECT_KASAN_FAIL(test, ptr[real_size] = 'y');
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 693)
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 694) kfree(ptr);
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 695) }
96fe805fb6fe9 (Alexander Potapenko 2016-05-20 16:59:17 -0700 696)
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 697) /*
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 698) * Check that a use-after-free is detected by ksize() and via normal accesses
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 699) * after it.
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 700) */
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 701) static void ksize_uaf(struct kunit *test)
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 702) {
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 703) char *ptr;
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 704) int size = 128 - KASAN_GRANULE_SIZE;
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 705)
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 706) ptr = kmalloc(size, GFP_KERNEL);
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 707) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 708) kfree(ptr);
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 709)
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 710) KUNIT_EXPECT_KASAN_FAIL(test, ksize(ptr));
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 711) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = *ptr);
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 712) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = *(ptr + size));
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 713) }
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 714)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 715) static void kasan_stack_oob(struct kunit *test)
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 716) {
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 717) char stack_array[10];
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 718) /* See comment in kasan_global_oob. */
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 719) char *volatile array = stack_array;
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 720) char *p = &array[ARRAY_SIZE(stack_array) + OOB_TAG_OFF];
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 721)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 722) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK);
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 723)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 724) KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 725) }
eae08dcab80c6 (Andrey Ryabinin 2016-05-20 16:59:34 -0700 726)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 727) static void kasan_alloca_oob_left(struct kunit *test)
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 728) {
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 729) volatile int i = 10;
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 730) char alloca_array[i];
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 731) /* See comment in kasan_global_oob. */
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 732) char *volatile array = alloca_array;
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 733) char *p = array - 1;
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 734)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 735) /* Only generic mode instruments dynamic allocas. */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 736) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 737) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 738)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 739) KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 740) }
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 741)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 742) static void kasan_alloca_oob_right(struct kunit *test)
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 743) {
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 744) volatile int i = 10;
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 745) char alloca_array[i];
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 746) /* See comment in kasan_global_oob. */
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 747) char *volatile array = alloca_array;
f649dc0e0d7b5 (Peter Collingbourne 2021-05-14 17:27:27 -0700 748) char *p = array + i;
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 749)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 750) /* Only generic mode instruments dynamic allocas. */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 751) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 752) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 753)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 754) KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 755) }
00a14294bb33a (Paul Lawrence 2018-02-06 15:36:16 -0800 756)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 757) static void kmem_cache_double_free(struct kunit *test)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 758) {
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 759) char *p;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 760) size_t size = 200;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 761) struct kmem_cache *cache;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 762)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 763) cache = kmem_cache_create("test_cache", size, 0, 0, NULL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 764) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 765)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 766) p = kmem_cache_alloc(cache, GFP_KERNEL);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 767) if (!p) {
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 768) kunit_err(test, "Allocation failed: %s\n", __func__);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 769) kmem_cache_destroy(cache);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 770) return;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 771) }
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 772)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 773) kmem_cache_free(cache, p);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 774) KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_free(cache, p));
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 775) kmem_cache_destroy(cache);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 776) }
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 777)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 778) static void kmem_cache_invalid_free(struct kunit *test)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 779) {
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 780) char *p;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 781) size_t size = 200;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 782) struct kmem_cache *cache;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 783)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 784) cache = kmem_cache_create("test_cache", size, 0, SLAB_TYPESAFE_BY_RCU,
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 785) NULL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 786) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 787)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 788) p = kmem_cache_alloc(cache, GFP_KERNEL);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 789) if (!p) {
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 790) kunit_err(test, "Allocation failed: %s\n", __func__);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 791) kmem_cache_destroy(cache);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 792) return;
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 793) }
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 794)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 795) /* Trigger invalid free, the object doesn't get freed. */
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 796) KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_free(cache, p + 1));
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 797)
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 798) /*
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 799) * Properly free the object to prevent the "Objects remaining in
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 800) * test_cache on __kmem_cache_shutdown" BUG failure.
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 801) */
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 802) kmem_cache_free(cache, p);
91c93ed07f04f (Andrey Konovalov 2018-04-10 16:30:35 -0700 803)
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 804) kmem_cache_destroy(cache);
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 805) }
b1d5728939ebe (Dmitry Vyukov 2018-02-06 15:36:37 -0800 806)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 807) static void kasan_memchr(struct kunit *test)
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 808) {
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 809) char *ptr;
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 810) size_t size = 24;
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 811)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 812) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 813) * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT.
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 814) * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details.
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 815) */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 816) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 817)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 818) if (OOB_TAG_OFF)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 819) size = round_up(size, OOB_TAG_OFF);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 820)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 821) ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 822) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 823)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 824) KUNIT_EXPECT_KASAN_FAIL(test,
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 825) kasan_ptr_result = memchr(ptr, '1', size + 1));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 826)
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 827) kfree(ptr);
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 828) }
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 829)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 830) static void kasan_memcmp(struct kunit *test)
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 831) {
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 832) char *ptr;
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 833) size_t size = 24;
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 834) int arr[9];
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 835)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 836) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 837) * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT.
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 838) * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details.
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 839) */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 840) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT);
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 841)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 842) if (OOB_TAG_OFF)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 843) size = round_up(size, OOB_TAG_OFF);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 844)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 845) ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 846) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 847) memset(arr, 0, sizeof(arr));
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 848)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 849) KUNIT_EXPECT_KASAN_FAIL(test,
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 850) kasan_int_result = memcmp(ptr, arr, size+1));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 851) kfree(ptr);
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 852) }
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 853)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 854) static void kasan_strings(struct kunit *test)
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 855) {
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 856) char *ptr;
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 857) size_t size = 24;
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 858)
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 859) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 860) * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT.
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 861) * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details.
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 862) */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 863) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 864)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 865) ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 866) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 867)
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 868) kfree(ptr);
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 869)
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 870) /*
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 871) * Try to cause only 1 invalid access (less spam in dmesg).
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 872) * For that we need ptr to point to zeroed byte.
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 873) * Skip metadata that could be stored in freed object so ptr
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 874) * will likely point to zeroed byte.
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 875) */
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 876) ptr += 16;
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 877) KUNIT_EXPECT_KASAN_FAIL(test, kasan_ptr_result = strchr(ptr, '1'));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 878)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 879) KUNIT_EXPECT_KASAN_FAIL(test, kasan_ptr_result = strrchr(ptr, '1'));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 880)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 881) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strcmp(ptr, "2"));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 882)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 883) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strncmp(ptr, "2", 1));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 884)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 885) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strlen(ptr));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 886)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 887) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strnlen(ptr, 1));
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 888) }
0c96350a2d2f6 (Andrey Ryabinin 2018-10-26 15:02:34 -0700 889)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 890) static void kasan_bitops_modify(struct kunit *test, int nr, void *addr)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 891) {
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 892) KUNIT_EXPECT_KASAN_FAIL(test, set_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 893) KUNIT_EXPECT_KASAN_FAIL(test, __set_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 894) KUNIT_EXPECT_KASAN_FAIL(test, clear_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 895) KUNIT_EXPECT_KASAN_FAIL(test, __clear_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 896) KUNIT_EXPECT_KASAN_FAIL(test, clear_bit_unlock(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 897) KUNIT_EXPECT_KASAN_FAIL(test, __clear_bit_unlock(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 898) KUNIT_EXPECT_KASAN_FAIL(test, change_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 899) KUNIT_EXPECT_KASAN_FAIL(test, __change_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 900) }
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 901)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 902) static void kasan_bitops_test_and_modify(struct kunit *test, int nr, void *addr)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 903) {
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 904) KUNIT_EXPECT_KASAN_FAIL(test, test_and_set_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 905) KUNIT_EXPECT_KASAN_FAIL(test, __test_and_set_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 906) KUNIT_EXPECT_KASAN_FAIL(test, test_and_set_bit_lock(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 907) KUNIT_EXPECT_KASAN_FAIL(test, test_and_clear_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 908) KUNIT_EXPECT_KASAN_FAIL(test, __test_and_clear_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 909) KUNIT_EXPECT_KASAN_FAIL(test, test_and_change_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 910) KUNIT_EXPECT_KASAN_FAIL(test, __test_and_change_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 911) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = test_bit(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 912)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 913) #if defined(clear_bit_unlock_is_negative_byte)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 914) KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result =
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 915) clear_bit_unlock_is_negative_byte(nr, addr));
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 916) #endif
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 917) }
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 918)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 919) static void kasan_bitops_generic(struct kunit *test)
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 920) {
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 921) long *bits;
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 922)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 923) /* This test is specifically crafted for the generic mode. */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 924) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 925)
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 926) /*
0fd379253691e (Andrey Konovalov 2021-02-24 12:05:13 -0800 927) * Allocate 1 more byte, which causes kzalloc to round up to 16 bytes;
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 928) * this way we do not actually corrupt other memory.
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 929) */
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 930) bits = kzalloc(sizeof(*bits) + 1, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 931) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bits);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 932)
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 933) /*
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 934) * Below calls try to access bit within allocated memory; however, the
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 935) * below accesses are still out-of-bounds, since bitops are defined to
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 936) * operate on the whole long the bit is in.
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 937) */
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 938) kasan_bitops_modify(test, BITS_PER_LONG, bits);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 939)
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 940) /*
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 941) * Below calls try to access bit beyond allocated memory.
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 942) */
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 943) kasan_bitops_test_and_modify(test, BITS_PER_LONG + BITS_PER_BYTE, bits);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 944)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 945) kfree(bits);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 946) }
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 947)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 948) static void kasan_bitops_tags(struct kunit *test)
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 949) {
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 950) long *bits;
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 951)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 952) /* This test is specifically crafted for tag-based modes. */
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 953) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 954)
e66e1799a7662 (Andrey Konovalov 2021-02-24 12:05:42 -0800 955) /* kmalloc-64 cache will be used and the last 16 bytes will be the redzone. */
e66e1799a7662 (Andrey Konovalov 2021-02-24 12:05:42 -0800 956) bits = kzalloc(48, GFP_KERNEL);
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 957) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bits);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 958)
e66e1799a7662 (Andrey Konovalov 2021-02-24 12:05:42 -0800 959) /* Do the accesses past the 48 allocated bytes, but within the redone. */
e66e1799a7662 (Andrey Konovalov 2021-02-24 12:05:42 -0800 960) kasan_bitops_modify(test, BITS_PER_LONG, (void *)bits + 48);
e66e1799a7662 (Andrey Konovalov 2021-02-24 12:05:42 -0800 961) kasan_bitops_test_and_modify(test, BITS_PER_LONG + BITS_PER_BYTE, (void *)bits + 48);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 962)
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 963) kfree(bits);
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 964) }
19a33ca6c209f (Marco Elver 2019-07-11 20:53:52 -0700 965)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 966) static void kmalloc_double_kzfree(struct kunit *test)
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 967) {
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 968) char *ptr;
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 969) size_t size = 16;
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 970)
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 971) ptr = kmalloc(size, GFP_KERNEL);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 972) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 973)
453431a54934d (Waiman Long 2020-08-06 23:18:13 -0700 974) kfree_sensitive(ptr);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 975) KUNIT_EXPECT_KASAN_FAIL(test, kfree_sensitive(ptr));
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 976) }
bb104ed785521 (Marco Elver 2019-07-11 20:54:11 -0700 977)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 978) static void vmalloc_oob(struct kunit *test)
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 979) {
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 980) void *area;
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 981)
da17e377723f5 (Andrey Konovalov 2021-02-24 12:05:17 -0800 982) KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 983)
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 984) /*
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 985) * We have to be careful not to hit the guard page.
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 986) * The MMU will catch that and crash us.
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 987) */
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 988) area = vmalloc(3000);
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 989) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, area);
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 990)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 991) KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)area)[3100]);
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 992) vfree(area);
0651391693012 (Daniel Axtens 2019-11-30 17:54:53 -0800 993) }
387d6e46681b0 (Walter Wu 2020-08-06 23:24:42 -0700 994)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 995) /*
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 996) * Check that the assigned pointer tag falls within the [KASAN_TAG_MIN,
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 997) * KASAN_TAG_KERNEL) range (note: excluding the match-all tag) for tag-based
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 998) * modes.
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 999) */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1000) static void match_all_not_assigned(struct kunit *test)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1001) {
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1002) char *ptr;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1003) struct page *pages;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1004) int i, size, order;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1005)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1006) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1007)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1008) for (i = 0; i < 256; i++) {
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1009) size = (get_random_int() % 1024) + 1;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1010) ptr = kmalloc(size, GFP_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1011) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1012) KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1013) KUNIT_EXPECT_LT(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1014) kfree(ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1015) }
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1016)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1017) for (i = 0; i < 256; i++) {
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1018) order = (get_random_int() % 4) + 1;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1019) pages = alloc_pages(GFP_KERNEL, order);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1020) ptr = page_address(pages);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1021) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1022) KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1023) KUNIT_EXPECT_LT(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1024) free_pages((unsigned long)ptr, order);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1025) }
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1026) }
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1027)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1028) /* Check that 0xff works as a match-all pointer tag for tag-based modes. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1029) static void match_all_ptr_tag(struct kunit *test)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1030) {
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1031) char *ptr;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1032) u8 tag;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1033)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1034) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1035)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1036) ptr = kmalloc(128, GFP_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1037) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1038)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1039) /* Backup the assigned tag. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1040) tag = get_tag(ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1041) KUNIT_EXPECT_NE(test, tag, (u8)KASAN_TAG_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1042)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1043) /* Reset the tag to 0xff.*/
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1044) ptr = set_tag(ptr, KASAN_TAG_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1045)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1046) /* This access shouldn't trigger a KASAN report. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1047) *ptr = 0;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1048)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1049) /* Recover the pointer tag and free. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1050) ptr = set_tag(ptr, tag);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1051) kfree(ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1052) }
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1053)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1054) /* Check that there are no match-all memory tags for tag-based modes. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1055) static void match_all_mem_tag(struct kunit *test)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1056) {
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1057) char *ptr;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1058) int tag;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1059)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1060) KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1061)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1062) ptr = kmalloc(128, GFP_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1063) KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1064) KUNIT_EXPECT_NE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1065)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1066) /* For each possible tag value not matching the pointer tag. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1067) for (tag = KASAN_TAG_MIN; tag <= KASAN_TAG_KERNEL; tag++) {
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1068) if (tag == get_tag(ptr))
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1069) continue;
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1070)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1071) /* Mark the first memory granule with the chosen memory tag. */
aa5c219c60ccb (Andrey Konovalov 2021-04-29 22:59:59 -0700 1072) kasan_poison(ptr, KASAN_GRANULE_SIZE, (u8)tag, false);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1073)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1074) /* This access must cause a KASAN report. */
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1075) KUNIT_EXPECT_KASAN_FAIL(test, *ptr = 0);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1076) }
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1077)
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1078) /* Recover the memory tag and free. */
aa5c219c60ccb (Andrey Konovalov 2021-04-29 22:59:59 -0700 1079) kasan_poison(ptr, KASAN_GRANULE_SIZE, get_tag(ptr), false);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1080) kfree(ptr);
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1081) }
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1082)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1083) static struct kunit_case kasan_kunit_test_cases[] = {
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1084) KUNIT_CASE(kmalloc_oob_right),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1085) KUNIT_CASE(kmalloc_oob_left),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1086) KUNIT_CASE(kmalloc_node_oob_right),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1087) KUNIT_CASE(kmalloc_pagealloc_oob_right),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1088) KUNIT_CASE(kmalloc_pagealloc_uaf),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1089) KUNIT_CASE(kmalloc_pagealloc_invalid_free),
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 1090) KUNIT_CASE(pagealloc_oob_right),
858bdeb046f6d (Andrey Konovalov 2021-02-24 12:05:55 -0800 1091) KUNIT_CASE(pagealloc_uaf),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1092) KUNIT_CASE(kmalloc_large_oob_right),
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 1093) KUNIT_CASE(krealloc_more_oob),
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 1094) KUNIT_CASE(krealloc_less_oob),
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 1095) KUNIT_CASE(krealloc_pagealloc_more_oob),
b87c28b9a7ef6 (Andrey Konovalov 2021-02-25 17:20:15 -0800 1096) KUNIT_CASE(krealloc_pagealloc_less_oob),
26a5ca7a73be3 (Andrey Konovalov 2021-02-25 17:20:19 -0800 1097) KUNIT_CASE(krealloc_uaf),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1098) KUNIT_CASE(kmalloc_oob_16),
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 1099) KUNIT_CASE(kmalloc_uaf_16),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1100) KUNIT_CASE(kmalloc_oob_in_memset),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1101) KUNIT_CASE(kmalloc_oob_memset_2),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1102) KUNIT_CASE(kmalloc_oob_memset_4),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1103) KUNIT_CASE(kmalloc_oob_memset_8),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1104) KUNIT_CASE(kmalloc_oob_memset_16),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1105) KUNIT_CASE(kmalloc_memmove_invalid_size),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1106) KUNIT_CASE(kmalloc_uaf),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1107) KUNIT_CASE(kmalloc_uaf_memset),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1108) KUNIT_CASE(kmalloc_uaf2),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1109) KUNIT_CASE(kfree_via_page),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1110) KUNIT_CASE(kfree_via_phys),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1111) KUNIT_CASE(kmem_cache_oob),
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 1112) KUNIT_CASE(kmem_cache_accounted),
115161354d0e0 (Andrey Konovalov 2021-02-24 12:05:59 -0800 1113) KUNIT_CASE(kmem_cache_bulk),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1114) KUNIT_CASE(kasan_global_oob),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1115) KUNIT_CASE(kasan_stack_oob),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1116) KUNIT_CASE(kasan_alloca_oob_left),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1117) KUNIT_CASE(kasan_alloca_oob_right),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1118) KUNIT_CASE(ksize_unpoisons_memory),
611806b4bf8dd (Andrey Konovalov 2021-02-24 12:05:50 -0800 1119) KUNIT_CASE(ksize_uaf),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1120) KUNIT_CASE(kmem_cache_double_free),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1121) KUNIT_CASE(kmem_cache_invalid_free),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1122) KUNIT_CASE(kasan_memchr),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1123) KUNIT_CASE(kasan_memcmp),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1124) KUNIT_CASE(kasan_strings),
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 1125) KUNIT_CASE(kasan_bitops_generic),
58b999d7a22c5 (Andrey Konovalov 2020-11-01 17:07:37 -0800 1126) KUNIT_CASE(kasan_bitops_tags),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1127) KUNIT_CASE(kmalloc_double_kzfree),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1128) KUNIT_CASE(vmalloc_oob),
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1129) KUNIT_CASE(match_all_not_assigned),
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1130) KUNIT_CASE(match_all_ptr_tag),
573a48092313d (Andrey Konovalov 2021-02-24 12:05:21 -0800 1131) KUNIT_CASE(match_all_mem_tag),
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1132) {}
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1133) };
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1134)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1135) static struct kunit_suite kasan_kunit_test_suite = {
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1136) .name = "kasan",
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1137) .init = kasan_test_init,
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1138) .test_cases = kasan_kunit_test_cases,
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1139) .exit = kasan_test_exit,
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1140) };
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1141)
73228c7ecc5e4 (Patricia Alfonso 2020-10-13 16:55:06 -0700 1142) kunit_test_suite(kasan_kunit_test_suite);
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 1143)
3f15801cdc237 (Andrey Ryabinin 2015-02-13 14:39:53 -0800 1144) MODULE_LICENSE("GPL");
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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