1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
5 * Author: Andrey Ryabinin <a.ryabinin@samsung.com>
8 #include <linux/bitops.h>
9 #include <linux/delay.h>
10 #include <linux/kasan.h>
11 #include <linux/kernel.h>
13 #include <linux/mman.h>
14 #include <linux/module.h>
15 #include <linux/printk.h>
16 #include <linux/random.h>
17 #include <linux/slab.h>
18 #include <linux/string.h>
19 #include <linux/uaccess.h>
21 #include <linux/vmalloc.h>
22 #include <linux/set_memory.h>
26 #include <kunit/test.h>
28 #include "../mm/kasan/kasan.h"
30 #define OOB_TAG_OFF (IS_ENABLED(CONFIG_KASAN_GENERIC) ? 0 : KASAN_GRANULE_SIZE)
33 * Some tests use these global variables to store return values from function
34 * calls that could otherwise be eliminated by the compiler as dead code.
36 void *kasan_ptr_result;
39 static struct kunit_resource resource;
40 static struct kunit_kasan_status test_status;
41 static bool multishot;
44 * Temporarily enable multi-shot mode. Otherwise, KASAN would only report the
45 * first detected bug and panic the kernel if panic_on_warn is enabled. For
46 * hardware tag-based KASAN also allow tag checking to be reenabled for each
47 * test, see the comment for KUNIT_EXPECT_KASAN_FAIL().
49 static int kasan_test_init(struct kunit *test)
51 if (!kasan_enabled()) {
52 kunit_err(test, "can't run KASAN tests with KASAN disabled");
56 multishot = kasan_save_enable_multi_shot();
57 test_status.report_found = false;
58 test_status.sync_fault = false;
59 kunit_add_named_resource(test, NULL, NULL, &resource,
60 "kasan_status", &test_status);
64 static void kasan_test_exit(struct kunit *test)
66 kasan_restore_multi_shot(multishot);
67 KUNIT_EXPECT_FALSE(test, test_status.report_found);
71 * KUNIT_EXPECT_KASAN_FAIL() - check that the executed expression produces a
72 * KASAN report; causes a test failure otherwise. This relies on a KUnit
73 * resource named "kasan_status". Do not use this name for KUnit resources
74 * outside of KASAN tests.
76 * For hardware tag-based KASAN, when a synchronous tag fault happens, tag
77 * checking is auto-disabled. When this happens, this test handler reenables
78 * tag checking. As tag checking can be only disabled or enabled per CPU,
79 * this handler disables migration (preemption).
81 * Since the compiler doesn't see that the expression can change the test_status
82 * fields, it can reorder or optimize away the accesses to those fields.
83 * Use READ/WRITE_ONCE() for the accesses and compiler barriers around the
84 * expression to prevent that.
86 * In between KUNIT_EXPECT_KASAN_FAIL checks, test_status.report_found is kept
87 * as false. This allows detecting KASAN reports that happen outside of the
88 * checks by asserting !test_status.report_found at the start of
89 * KUNIT_EXPECT_KASAN_FAIL and in kasan_test_exit.
91 #define KUNIT_EXPECT_KASAN_FAIL(test, expression) do { \
92 if (IS_ENABLED(CONFIG_KASAN_HW_TAGS) && \
93 kasan_sync_fault_possible()) \
95 KUNIT_EXPECT_FALSE(test, READ_ONCE(test_status.report_found)); \
99 if (kasan_async_fault_possible()) \
100 kasan_force_async_fault(); \
101 if (!READ_ONCE(test_status.report_found)) { \
102 KUNIT_FAIL(test, KUNIT_SUBTEST_INDENT "KASAN failure " \
103 "expected in \"" #expression \
104 "\", but none occurred"); \
106 if (IS_ENABLED(CONFIG_KASAN_HW_TAGS) && \
107 kasan_sync_fault_possible()) { \
108 if (READ_ONCE(test_status.report_found) && \
109 READ_ONCE(test_status.sync_fault)) \
110 kasan_enable_tagging(); \
113 WRITE_ONCE(test_status.report_found, false); \
116 #define KASAN_TEST_NEEDS_CONFIG_ON(test, config) do { \
117 if (!IS_ENABLED(config)) \
118 kunit_skip((test), "Test requires " #config "=y"); \
121 #define KASAN_TEST_NEEDS_CONFIG_OFF(test, config) do { \
122 if (IS_ENABLED(config)) \
123 kunit_skip((test), "Test requires " #config "=n"); \
126 static void kmalloc_oob_right(struct kunit *test)
129 size_t size = 128 - KASAN_GRANULE_SIZE - 5;
131 ptr = kmalloc(size, GFP_KERNEL);
132 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
134 OPTIMIZER_HIDE_VAR(ptr);
136 * An unaligned access past the requested kmalloc size.
137 * Only generic KASAN can precisely detect these.
139 if (IS_ENABLED(CONFIG_KASAN_GENERIC))
140 KUNIT_EXPECT_KASAN_FAIL(test, ptr[size] = 'x');
143 * An aligned access into the first out-of-bounds granule that falls
144 * within the aligned kmalloc object.
146 KUNIT_EXPECT_KASAN_FAIL(test, ptr[size + 5] = 'y');
148 /* Out-of-bounds access past the aligned kmalloc object. */
149 KUNIT_EXPECT_KASAN_FAIL(test, ptr[0] =
150 ptr[size + KASAN_GRANULE_SIZE + 5]);
155 static void kmalloc_oob_left(struct kunit *test)
160 ptr = kmalloc(size, GFP_KERNEL);
161 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
163 OPTIMIZER_HIDE_VAR(ptr);
164 KUNIT_EXPECT_KASAN_FAIL(test, *ptr = *(ptr - 1));
168 static void kmalloc_node_oob_right(struct kunit *test)
173 ptr = kmalloc_node(size, GFP_KERNEL, 0);
174 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
176 OPTIMIZER_HIDE_VAR(ptr);
177 KUNIT_EXPECT_KASAN_FAIL(test, ptr[0] = ptr[size]);
182 * These kmalloc_pagealloc_* tests try allocating a memory chunk that doesn't
183 * fit into a slab cache and therefore is allocated via the page allocator
184 * fallback. Since this kind of fallback is only implemented for SLUB, these
185 * tests are limited to that allocator.
187 static void kmalloc_pagealloc_oob_right(struct kunit *test)
190 size_t size = KMALLOC_MAX_CACHE_SIZE + 10;
192 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
194 ptr = kmalloc(size, GFP_KERNEL);
195 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
197 OPTIMIZER_HIDE_VAR(ptr);
198 KUNIT_EXPECT_KASAN_FAIL(test, ptr[size + OOB_TAG_OFF] = 0);
203 static void kmalloc_pagealloc_uaf(struct kunit *test)
206 size_t size = KMALLOC_MAX_CACHE_SIZE + 10;
208 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
210 ptr = kmalloc(size, GFP_KERNEL);
211 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
214 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[0]);
217 static void kmalloc_pagealloc_invalid_free(struct kunit *test)
220 size_t size = KMALLOC_MAX_CACHE_SIZE + 10;
222 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
224 ptr = kmalloc(size, GFP_KERNEL);
225 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
227 KUNIT_EXPECT_KASAN_FAIL(test, kfree(ptr + 1));
230 static void pagealloc_oob_right(struct kunit *test)
235 size_t size = (1UL << (PAGE_SHIFT + order));
238 * With generic KASAN page allocations have no redzones, thus
239 * out-of-bounds detection is not guaranteed.
240 * See https://bugzilla.kernel.org/show_bug.cgi?id=210503.
242 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
244 pages = alloc_pages(GFP_KERNEL, order);
245 ptr = page_address(pages);
246 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
248 KUNIT_EXPECT_KASAN_FAIL(test, ptr[0] = ptr[size]);
249 free_pages((unsigned long)ptr, order);
252 static void pagealloc_uaf(struct kunit *test)
258 pages = alloc_pages(GFP_KERNEL, order);
259 ptr = page_address(pages);
260 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
261 free_pages((unsigned long)ptr, order);
263 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[0]);
266 static void kmalloc_large_oob_right(struct kunit *test)
269 size_t size = KMALLOC_MAX_CACHE_SIZE - 256;
272 * Allocate a chunk that is large enough, but still fits into a slab
273 * and does not trigger the page allocator fallback in SLUB.
275 ptr = kmalloc(size, GFP_KERNEL);
276 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
278 OPTIMIZER_HIDE_VAR(ptr);
279 KUNIT_EXPECT_KASAN_FAIL(test, ptr[size] = 0);
283 static void krealloc_more_oob_helper(struct kunit *test,
284 size_t size1, size_t size2)
289 KUNIT_ASSERT_LT(test, size1, size2);
290 middle = size1 + (size2 - size1) / 2;
292 ptr1 = kmalloc(size1, GFP_KERNEL);
293 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
295 ptr2 = krealloc(ptr1, size2, GFP_KERNEL);
296 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
298 /* All offsets up to size2 must be accessible. */
299 ptr2[size1 - 1] = 'x';
302 ptr2[size2 - 1] = 'x';
304 /* Generic mode is precise, so unaligned size2 must be inaccessible. */
305 if (IS_ENABLED(CONFIG_KASAN_GENERIC))
306 KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size2] = 'x');
308 /* For all modes first aligned offset after size2 must be inaccessible. */
309 KUNIT_EXPECT_KASAN_FAIL(test,
310 ptr2[round_up(size2, KASAN_GRANULE_SIZE)] = 'x');
315 static void krealloc_less_oob_helper(struct kunit *test,
316 size_t size1, size_t size2)
321 KUNIT_ASSERT_LT(test, size2, size1);
322 middle = size2 + (size1 - size2) / 2;
324 ptr1 = kmalloc(size1, GFP_KERNEL);
325 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
327 ptr2 = krealloc(ptr1, size2, GFP_KERNEL);
328 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
330 /* Must be accessible for all modes. */
331 ptr2[size2 - 1] = 'x';
333 /* Generic mode is precise, so unaligned size2 must be inaccessible. */
334 if (IS_ENABLED(CONFIG_KASAN_GENERIC))
335 KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size2] = 'x');
337 /* For all modes first aligned offset after size2 must be inaccessible. */
338 KUNIT_EXPECT_KASAN_FAIL(test,
339 ptr2[round_up(size2, KASAN_GRANULE_SIZE)] = 'x');
342 * For all modes all size2, middle, and size1 should land in separate
343 * granules and thus the latter two offsets should be inaccessible.
345 KUNIT_EXPECT_LE(test, round_up(size2, KASAN_GRANULE_SIZE),
346 round_down(middle, KASAN_GRANULE_SIZE));
347 KUNIT_EXPECT_LE(test, round_up(middle, KASAN_GRANULE_SIZE),
348 round_down(size1, KASAN_GRANULE_SIZE));
349 KUNIT_EXPECT_KASAN_FAIL(test, ptr2[middle] = 'x');
350 KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size1 - 1] = 'x');
351 KUNIT_EXPECT_KASAN_FAIL(test, ptr2[size1] = 'x');
356 static void krealloc_more_oob(struct kunit *test)
358 krealloc_more_oob_helper(test, 201, 235);
361 static void krealloc_less_oob(struct kunit *test)
363 krealloc_less_oob_helper(test, 235, 201);
366 static void krealloc_pagealloc_more_oob(struct kunit *test)
368 /* page_alloc fallback in only implemented for SLUB. */
369 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
371 krealloc_more_oob_helper(test, KMALLOC_MAX_CACHE_SIZE + 201,
372 KMALLOC_MAX_CACHE_SIZE + 235);
375 static void krealloc_pagealloc_less_oob(struct kunit *test)
377 /* page_alloc fallback in only implemented for SLUB. */
378 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB);
380 krealloc_less_oob_helper(test, KMALLOC_MAX_CACHE_SIZE + 235,
381 KMALLOC_MAX_CACHE_SIZE + 201);
385 * Check that krealloc() detects a use-after-free, returns NULL,
386 * and doesn't unpoison the freed object.
388 static void krealloc_uaf(struct kunit *test)
394 ptr1 = kmalloc(size1, GFP_KERNEL);
395 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
398 KUNIT_EXPECT_KASAN_FAIL(test, ptr2 = krealloc(ptr1, size2, GFP_KERNEL));
399 KUNIT_ASSERT_NULL(test, ptr2);
400 KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)ptr1);
403 static void kmalloc_oob_16(struct kunit *test)
409 /* This test is specifically crafted for the generic mode. */
410 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
412 ptr1 = kmalloc(sizeof(*ptr1) - 3, GFP_KERNEL);
413 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
415 ptr2 = kmalloc(sizeof(*ptr2), GFP_KERNEL);
416 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
418 OPTIMIZER_HIDE_VAR(ptr1);
419 OPTIMIZER_HIDE_VAR(ptr2);
420 KUNIT_EXPECT_KASAN_FAIL(test, *ptr1 = *ptr2);
425 static void kmalloc_uaf_16(struct kunit *test)
431 ptr1 = kmalloc(sizeof(*ptr1), GFP_KERNEL);
432 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
434 ptr2 = kmalloc(sizeof(*ptr2), GFP_KERNEL);
435 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
438 KUNIT_EXPECT_KASAN_FAIL(test, *ptr1 = *ptr2);
443 * Note: in the memset tests below, the written range touches both valid and
444 * invalid memory. This makes sure that the instrumentation does not only check
445 * the starting address but the whole range.
448 static void kmalloc_oob_memset_2(struct kunit *test)
451 size_t size = 128 - KASAN_GRANULE_SIZE;
453 ptr = kmalloc(size, GFP_KERNEL);
454 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
456 OPTIMIZER_HIDE_VAR(size);
457 KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + size - 1, 0, 2));
461 static void kmalloc_oob_memset_4(struct kunit *test)
464 size_t size = 128 - KASAN_GRANULE_SIZE;
466 ptr = kmalloc(size, GFP_KERNEL);
467 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
469 OPTIMIZER_HIDE_VAR(size);
470 KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + size - 3, 0, 4));
474 static void kmalloc_oob_memset_8(struct kunit *test)
477 size_t size = 128 - KASAN_GRANULE_SIZE;
479 ptr = kmalloc(size, GFP_KERNEL);
480 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
482 OPTIMIZER_HIDE_VAR(size);
483 KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + size - 7, 0, 8));
487 static void kmalloc_oob_memset_16(struct kunit *test)
490 size_t size = 128 - KASAN_GRANULE_SIZE;
492 ptr = kmalloc(size, GFP_KERNEL);
493 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
495 OPTIMIZER_HIDE_VAR(size);
496 KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr + size - 15, 0, 16));
500 static void kmalloc_oob_in_memset(struct kunit *test)
503 size_t size = 128 - KASAN_GRANULE_SIZE;
505 ptr = kmalloc(size, GFP_KERNEL);
506 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
508 OPTIMIZER_HIDE_VAR(ptr);
509 OPTIMIZER_HIDE_VAR(size);
510 KUNIT_EXPECT_KASAN_FAIL(test,
511 memset(ptr, 0, size + KASAN_GRANULE_SIZE));
515 static void kmalloc_memmove_negative_size(struct kunit *test)
519 size_t invalid_size = -2;
522 * Hardware tag-based mode doesn't check memmove for negative size.
523 * As a result, this test introduces a side-effect memory corruption,
524 * which can result in a crash.
526 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_HW_TAGS);
528 ptr = kmalloc(size, GFP_KERNEL);
529 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
531 memset((char *)ptr, 0, 64);
532 OPTIMIZER_HIDE_VAR(ptr);
533 OPTIMIZER_HIDE_VAR(invalid_size);
534 KUNIT_EXPECT_KASAN_FAIL(test,
535 memmove((char *)ptr, (char *)ptr + 4, invalid_size));
539 static void kmalloc_memmove_invalid_size(struct kunit *test)
543 volatile size_t invalid_size = size;
545 ptr = kmalloc(size, GFP_KERNEL);
546 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
548 memset((char *)ptr, 0, 64);
549 OPTIMIZER_HIDE_VAR(ptr);
550 KUNIT_EXPECT_KASAN_FAIL(test,
551 memmove((char *)ptr, (char *)ptr + 4, invalid_size));
555 static void kmalloc_uaf(struct kunit *test)
560 ptr = kmalloc(size, GFP_KERNEL);
561 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
564 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[8]);
567 static void kmalloc_uaf_memset(struct kunit *test)
573 * Only generic KASAN uses quarantine, which is required to avoid a
574 * kernel memory corruption this test causes.
576 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
578 ptr = kmalloc(size, GFP_KERNEL);
579 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
582 KUNIT_EXPECT_KASAN_FAIL(test, memset(ptr, 0, size));
585 static void kmalloc_uaf2(struct kunit *test)
592 ptr1 = kmalloc(size, GFP_KERNEL);
593 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1);
597 ptr2 = kmalloc(size, GFP_KERNEL);
598 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
601 * For tag-based KASAN ptr1 and ptr2 tags might happen to be the same.
602 * Allow up to 16 attempts at generating different tags.
604 if (!IS_ENABLED(CONFIG_KASAN_GENERIC) && ptr1 == ptr2 && counter++ < 16) {
609 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr1)[40]);
610 KUNIT_EXPECT_PTR_NE(test, ptr1, ptr2);
615 static void kfree_via_page(struct kunit *test)
620 unsigned long offset;
622 ptr = kmalloc(size, GFP_KERNEL);
623 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
625 page = virt_to_page(ptr);
626 offset = offset_in_page(ptr);
627 kfree(page_address(page) + offset);
630 static void kfree_via_phys(struct kunit *test)
636 ptr = kmalloc(size, GFP_KERNEL);
637 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
639 phys = virt_to_phys(ptr);
640 kfree(phys_to_virt(phys));
643 static void kmem_cache_oob(struct kunit *test)
647 struct kmem_cache *cache;
649 cache = kmem_cache_create("test_cache", size, 0, 0, NULL);
650 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
652 p = kmem_cache_alloc(cache, GFP_KERNEL);
654 kunit_err(test, "Allocation failed: %s\n", __func__);
655 kmem_cache_destroy(cache);
659 KUNIT_EXPECT_KASAN_FAIL(test, *p = p[size + OOB_TAG_OFF]);
661 kmem_cache_free(cache, p);
662 kmem_cache_destroy(cache);
665 static void kmem_cache_accounted(struct kunit *test)
670 struct kmem_cache *cache;
672 cache = kmem_cache_create("test_cache", size, 0, SLAB_ACCOUNT, NULL);
673 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
676 * Several allocations with a delay to allow for lazy per memcg kmem
679 for (i = 0; i < 5; i++) {
680 p = kmem_cache_alloc(cache, GFP_KERNEL);
684 kmem_cache_free(cache, p);
689 kmem_cache_destroy(cache);
692 static void kmem_cache_bulk(struct kunit *test)
694 struct kmem_cache *cache;
700 cache = kmem_cache_create("test_cache", size, 0, 0, NULL);
701 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
703 ret = kmem_cache_alloc_bulk(cache, GFP_KERNEL, ARRAY_SIZE(p), (void **)&p);
705 kunit_err(test, "Allocation failed: %s\n", __func__);
706 kmem_cache_destroy(cache);
710 for (i = 0; i < ARRAY_SIZE(p); i++)
711 p[i][0] = p[i][size - 1] = 42;
713 kmem_cache_free_bulk(cache, ARRAY_SIZE(p), (void **)&p);
714 kmem_cache_destroy(cache);
717 static char global_array[10];
719 static void kasan_global_oob_right(struct kunit *test)
722 * Deliberate out-of-bounds access. To prevent CONFIG_UBSAN_LOCAL_BOUNDS
723 * from failing here and panicking the kernel, access the array via a
724 * volatile pointer, which will prevent the compiler from being able to
725 * determine the array bounds.
727 * This access uses a volatile pointer to char (char *volatile) rather
728 * than the more conventional pointer to volatile char (volatile char *)
729 * because we want to prevent the compiler from making inferences about
730 * the pointer itself (i.e. its array bounds), not the data that it
733 char *volatile array = global_array;
734 char *p = &array[ARRAY_SIZE(global_array) + 3];
736 /* Only generic mode instruments globals. */
737 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
739 KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
742 static void kasan_global_oob_left(struct kunit *test)
744 char *volatile array = global_array;
748 * GCC is known to fail this test, skip it.
749 * See https://bugzilla.kernel.org/show_bug.cgi?id=215051.
751 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_CC_IS_CLANG);
752 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
753 KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
756 /* Check that ksize() makes the whole object accessible. */
757 static void ksize_unpoisons_memory(struct kunit *test)
760 size_t size = 123, real_size;
762 ptr = kmalloc(size, GFP_KERNEL);
763 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
764 real_size = ksize(ptr);
766 OPTIMIZER_HIDE_VAR(ptr);
768 /* This access shouldn't trigger a KASAN report. */
772 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[real_size]);
778 * Check that a use-after-free is detected by ksize() and via normal accesses
781 static void ksize_uaf(struct kunit *test)
784 int size = 128 - KASAN_GRANULE_SIZE;
786 ptr = kmalloc(size, GFP_KERNEL);
787 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
790 OPTIMIZER_HIDE_VAR(ptr);
791 KUNIT_EXPECT_KASAN_FAIL(test, ksize(ptr));
792 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[0]);
793 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[size]);
796 static void kasan_stack_oob(struct kunit *test)
798 char stack_array[10];
799 /* See comment in kasan_global_oob_right. */
800 char *volatile array = stack_array;
801 char *p = &array[ARRAY_SIZE(stack_array) + OOB_TAG_OFF];
803 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK);
805 KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
808 static void kasan_alloca_oob_left(struct kunit *test)
811 char alloca_array[i];
812 /* See comment in kasan_global_oob_right. */
813 char *volatile array = alloca_array;
816 /* Only generic mode instruments dynamic allocas. */
817 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
818 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK);
820 KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
823 static void kasan_alloca_oob_right(struct kunit *test)
826 char alloca_array[i];
827 /* See comment in kasan_global_oob_right. */
828 char *volatile array = alloca_array;
831 /* Only generic mode instruments dynamic allocas. */
832 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
833 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK);
835 KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p);
838 static void kmem_cache_double_free(struct kunit *test)
842 struct kmem_cache *cache;
844 cache = kmem_cache_create("test_cache", size, 0, 0, NULL);
845 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
847 p = kmem_cache_alloc(cache, GFP_KERNEL);
849 kunit_err(test, "Allocation failed: %s\n", __func__);
850 kmem_cache_destroy(cache);
854 kmem_cache_free(cache, p);
855 KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_free(cache, p));
856 kmem_cache_destroy(cache);
859 static void kmem_cache_invalid_free(struct kunit *test)
863 struct kmem_cache *cache;
865 cache = kmem_cache_create("test_cache", size, 0, SLAB_TYPESAFE_BY_RCU,
867 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
869 p = kmem_cache_alloc(cache, GFP_KERNEL);
871 kunit_err(test, "Allocation failed: %s\n", __func__);
872 kmem_cache_destroy(cache);
876 /* Trigger invalid free, the object doesn't get freed. */
877 KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_free(cache, p + 1));
880 * Properly free the object to prevent the "Objects remaining in
881 * test_cache on __kmem_cache_shutdown" BUG failure.
883 kmem_cache_free(cache, p);
885 kmem_cache_destroy(cache);
888 static void empty_cache_ctor(void *object) { }
890 static void kmem_cache_double_destroy(struct kunit *test)
892 struct kmem_cache *cache;
894 /* Provide a constructor to prevent cache merging. */
895 cache = kmem_cache_create("test_cache", 200, 0, 0, empty_cache_ctor);
896 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
897 kmem_cache_destroy(cache);
898 KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_destroy(cache));
901 static void kasan_memchr(struct kunit *test)
907 * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT.
908 * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details.
910 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT);
913 size = round_up(size, OOB_TAG_OFF);
915 ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
916 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
918 OPTIMIZER_HIDE_VAR(ptr);
919 OPTIMIZER_HIDE_VAR(size);
920 KUNIT_EXPECT_KASAN_FAIL(test,
921 kasan_ptr_result = memchr(ptr, '1', size + 1));
926 static void kasan_memcmp(struct kunit *test)
933 * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT.
934 * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details.
936 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT);
939 size = round_up(size, OOB_TAG_OFF);
941 ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
942 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
943 memset(arr, 0, sizeof(arr));
945 OPTIMIZER_HIDE_VAR(ptr);
946 OPTIMIZER_HIDE_VAR(size);
947 KUNIT_EXPECT_KASAN_FAIL(test,
948 kasan_int_result = memcmp(ptr, arr, size+1));
952 static void kasan_strings(struct kunit *test)
958 * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT.
959 * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details.
961 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT);
963 ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
964 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
969 * Try to cause only 1 invalid access (less spam in dmesg).
970 * For that we need ptr to point to zeroed byte.
971 * Skip metadata that could be stored in freed object so ptr
972 * will likely point to zeroed byte.
975 KUNIT_EXPECT_KASAN_FAIL(test, kasan_ptr_result = strchr(ptr, '1'));
977 KUNIT_EXPECT_KASAN_FAIL(test, kasan_ptr_result = strrchr(ptr, '1'));
979 KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strcmp(ptr, "2"));
981 KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strncmp(ptr, "2", 1));
983 KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strlen(ptr));
985 KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = strnlen(ptr, 1));
988 static void kasan_bitops_modify(struct kunit *test, int nr, void *addr)
990 KUNIT_EXPECT_KASAN_FAIL(test, set_bit(nr, addr));
991 KUNIT_EXPECT_KASAN_FAIL(test, __set_bit(nr, addr));
992 KUNIT_EXPECT_KASAN_FAIL(test, clear_bit(nr, addr));
993 KUNIT_EXPECT_KASAN_FAIL(test, __clear_bit(nr, addr));
994 KUNIT_EXPECT_KASAN_FAIL(test, clear_bit_unlock(nr, addr));
995 KUNIT_EXPECT_KASAN_FAIL(test, __clear_bit_unlock(nr, addr));
996 KUNIT_EXPECT_KASAN_FAIL(test, change_bit(nr, addr));
997 KUNIT_EXPECT_KASAN_FAIL(test, __change_bit(nr, addr));
1000 static void kasan_bitops_test_and_modify(struct kunit *test, int nr, void *addr)
1002 KUNIT_EXPECT_KASAN_FAIL(test, test_and_set_bit(nr, addr));
1003 KUNIT_EXPECT_KASAN_FAIL(test, __test_and_set_bit(nr, addr));
1004 KUNIT_EXPECT_KASAN_FAIL(test, test_and_set_bit_lock(nr, addr));
1005 KUNIT_EXPECT_KASAN_FAIL(test, test_and_clear_bit(nr, addr));
1006 KUNIT_EXPECT_KASAN_FAIL(test, __test_and_clear_bit(nr, addr));
1007 KUNIT_EXPECT_KASAN_FAIL(test, test_and_change_bit(nr, addr));
1008 KUNIT_EXPECT_KASAN_FAIL(test, __test_and_change_bit(nr, addr));
1009 KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result = test_bit(nr, addr));
1011 #if defined(clear_bit_unlock_is_negative_byte)
1012 KUNIT_EXPECT_KASAN_FAIL(test, kasan_int_result =
1013 clear_bit_unlock_is_negative_byte(nr, addr));
1017 static void kasan_bitops_generic(struct kunit *test)
1021 /* This test is specifically crafted for the generic mode. */
1022 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
1025 * Allocate 1 more byte, which causes kzalloc to round up to 16 bytes;
1026 * this way we do not actually corrupt other memory.
1028 bits = kzalloc(sizeof(*bits) + 1, GFP_KERNEL);
1029 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bits);
1032 * Below calls try to access bit within allocated memory; however, the
1033 * below accesses are still out-of-bounds, since bitops are defined to
1034 * operate on the whole long the bit is in.
1036 kasan_bitops_modify(test, BITS_PER_LONG, bits);
1039 * Below calls try to access bit beyond allocated memory.
1041 kasan_bitops_test_and_modify(test, BITS_PER_LONG + BITS_PER_BYTE, bits);
1046 static void kasan_bitops_tags(struct kunit *test)
1050 /* This test is specifically crafted for tag-based modes. */
1051 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
1053 /* kmalloc-64 cache will be used and the last 16 bytes will be the redzone. */
1054 bits = kzalloc(48, GFP_KERNEL);
1055 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bits);
1057 /* Do the accesses past the 48 allocated bytes, but within the redone. */
1058 kasan_bitops_modify(test, BITS_PER_LONG, (void *)bits + 48);
1059 kasan_bitops_test_and_modify(test, BITS_PER_LONG + BITS_PER_BYTE, (void *)bits + 48);
1064 static void kmalloc_double_kzfree(struct kunit *test)
1069 ptr = kmalloc(size, GFP_KERNEL);
1070 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1072 kfree_sensitive(ptr);
1073 KUNIT_EXPECT_KASAN_FAIL(test, kfree_sensitive(ptr));
1076 static void vmalloc_helpers_tags(struct kunit *test)
1080 /* This test is intended for tag-based modes. */
1081 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
1083 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
1085 ptr = vmalloc(PAGE_SIZE);
1086 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1088 /* Check that the returned pointer is tagged. */
1089 KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
1090 KUNIT_EXPECT_LT(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
1092 /* Make sure exported vmalloc helpers handle tagged pointers. */
1093 KUNIT_ASSERT_TRUE(test, is_vmalloc_addr(ptr));
1094 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vmalloc_to_page(ptr));
1096 #if !IS_MODULE(CONFIG_KASAN_KUNIT_TEST)
1100 /* Make sure vmalloc'ed memory permissions can be changed. */
1101 rv = set_memory_ro((unsigned long)ptr, 1);
1102 KUNIT_ASSERT_GE(test, rv, 0);
1103 rv = set_memory_rw((unsigned long)ptr, 1);
1104 KUNIT_ASSERT_GE(test, rv, 0);
1111 static void vmalloc_oob(struct kunit *test)
1113 char *v_ptr, *p_ptr;
1115 size_t size = PAGE_SIZE / 2 - KASAN_GRANULE_SIZE - 5;
1117 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
1119 v_ptr = vmalloc(size);
1120 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr);
1122 OPTIMIZER_HIDE_VAR(v_ptr);
1125 * We have to be careful not to hit the guard page in vmalloc tests.
1126 * The MMU will catch that and crash us.
1129 /* Make sure in-bounds accesses are valid. */
1131 v_ptr[size - 1] = 0;
1134 * An unaligned access past the requested vmalloc size.
1135 * Only generic KASAN can precisely detect these.
1137 if (IS_ENABLED(CONFIG_KASAN_GENERIC))
1138 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)v_ptr)[size]);
1140 /* An aligned access into the first out-of-bounds granule. */
1141 KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)v_ptr)[size + 5]);
1143 /* Check that in-bounds accesses to the physical page are valid. */
1144 page = vmalloc_to_page(v_ptr);
1145 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, page);
1146 p_ptr = page_address(page);
1147 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, p_ptr);
1153 * We can't check for use-after-unmap bugs in this nor in the following
1154 * vmalloc tests, as the page might be fully unmapped and accessing it
1155 * will crash the kernel.
1159 static void vmap_tags(struct kunit *test)
1161 char *p_ptr, *v_ptr;
1162 struct page *p_page, *v_page;
1165 * This test is specifically crafted for the software tag-based mode,
1166 * the only tag-based mode that poisons vmap mappings.
1168 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_SW_TAGS);
1170 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
1172 p_page = alloc_pages(GFP_KERNEL, 1);
1173 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, p_page);
1174 p_ptr = page_address(p_page);
1175 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, p_ptr);
1177 v_ptr = vmap(&p_page, 1, VM_MAP, PAGE_KERNEL);
1178 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr);
1181 * We can't check for out-of-bounds bugs in this nor in the following
1182 * vmalloc tests, as allocations have page granularity and accessing
1183 * the guard page will crash the kernel.
1186 KUNIT_EXPECT_GE(test, (u8)get_tag(v_ptr), (u8)KASAN_TAG_MIN);
1187 KUNIT_EXPECT_LT(test, (u8)get_tag(v_ptr), (u8)KASAN_TAG_KERNEL);
1189 /* Make sure that in-bounds accesses through both pointers work. */
1193 /* Make sure vmalloc_to_page() correctly recovers the page pointer. */
1194 v_page = vmalloc_to_page(v_ptr);
1195 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_page);
1196 KUNIT_EXPECT_PTR_EQ(test, p_page, v_page);
1199 free_pages((unsigned long)p_ptr, 1);
1202 static void vm_map_ram_tags(struct kunit *test)
1204 char *p_ptr, *v_ptr;
1208 * This test is specifically crafted for the software tag-based mode,
1209 * the only tag-based mode that poisons vm_map_ram mappings.
1211 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_SW_TAGS);
1213 page = alloc_pages(GFP_KERNEL, 1);
1214 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, page);
1215 p_ptr = page_address(page);
1216 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, p_ptr);
1218 v_ptr = vm_map_ram(&page, 1, -1);
1219 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr);
1221 KUNIT_EXPECT_GE(test, (u8)get_tag(v_ptr), (u8)KASAN_TAG_MIN);
1222 KUNIT_EXPECT_LT(test, (u8)get_tag(v_ptr), (u8)KASAN_TAG_KERNEL);
1224 /* Make sure that in-bounds accesses through both pointers work. */
1228 vm_unmap_ram(v_ptr, 1);
1229 free_pages((unsigned long)p_ptr, 1);
1232 static void vmalloc_percpu(struct kunit *test)
1238 * This test is specifically crafted for the software tag-based mode,
1239 * the only tag-based mode that poisons percpu mappings.
1241 KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_SW_TAGS);
1243 ptr = __alloc_percpu(PAGE_SIZE, PAGE_SIZE);
1245 for_each_possible_cpu(cpu) {
1246 char *c_ptr = per_cpu_ptr(ptr, cpu);
1248 KUNIT_EXPECT_GE(test, (u8)get_tag(c_ptr), (u8)KASAN_TAG_MIN);
1249 KUNIT_EXPECT_LT(test, (u8)get_tag(c_ptr), (u8)KASAN_TAG_KERNEL);
1251 /* Make sure that in-bounds accesses don't crash the kernel. */
1259 * Check that the assigned pointer tag falls within the [KASAN_TAG_MIN,
1260 * KASAN_TAG_KERNEL) range (note: excluding the match-all tag) for tag-based
1263 static void match_all_not_assigned(struct kunit *test)
1269 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
1271 for (i = 0; i < 256; i++) {
1272 size = (get_random_int() % 1024) + 1;
1273 ptr = kmalloc(size, GFP_KERNEL);
1274 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1275 KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
1276 KUNIT_EXPECT_LT(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
1280 for (i = 0; i < 256; i++) {
1281 order = (get_random_int() % 4) + 1;
1282 pages = alloc_pages(GFP_KERNEL, order);
1283 ptr = page_address(pages);
1284 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1285 KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
1286 KUNIT_EXPECT_LT(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
1287 free_pages((unsigned long)ptr, order);
1290 if (!IS_ENABLED(CONFIG_KASAN_VMALLOC))
1293 for (i = 0; i < 256; i++) {
1294 size = (get_random_int() % 1024) + 1;
1295 ptr = vmalloc(size);
1296 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1297 KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
1298 KUNIT_EXPECT_LT(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
1303 /* Check that 0xff works as a match-all pointer tag for tag-based modes. */
1304 static void match_all_ptr_tag(struct kunit *test)
1309 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
1311 ptr = kmalloc(128, GFP_KERNEL);
1312 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1314 /* Backup the assigned tag. */
1316 KUNIT_EXPECT_NE(test, tag, (u8)KASAN_TAG_KERNEL);
1318 /* Reset the tag to 0xff.*/
1319 ptr = set_tag(ptr, KASAN_TAG_KERNEL);
1321 /* This access shouldn't trigger a KASAN report. */
1324 /* Recover the pointer tag and free. */
1325 ptr = set_tag(ptr, tag);
1329 /* Check that there are no match-all memory tags for tag-based modes. */
1330 static void match_all_mem_tag(struct kunit *test)
1335 KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
1337 ptr = kmalloc(128, GFP_KERNEL);
1338 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
1339 KUNIT_EXPECT_NE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_KERNEL);
1341 /* For each possible tag value not matching the pointer tag. */
1342 for (tag = KASAN_TAG_MIN; tag <= KASAN_TAG_KERNEL; tag++) {
1343 if (tag == get_tag(ptr))
1346 /* Mark the first memory granule with the chosen memory tag. */
1347 kasan_poison(ptr, KASAN_GRANULE_SIZE, (u8)tag, false);
1349 /* This access must cause a KASAN report. */
1350 KUNIT_EXPECT_KASAN_FAIL(test, *ptr = 0);
1353 /* Recover the memory tag and free. */
1354 kasan_poison(ptr, KASAN_GRANULE_SIZE, get_tag(ptr), false);
1358 static struct kunit_case kasan_kunit_test_cases[] = {
1359 KUNIT_CASE(kmalloc_oob_right),
1360 KUNIT_CASE(kmalloc_oob_left),
1361 KUNIT_CASE(kmalloc_node_oob_right),
1362 KUNIT_CASE(kmalloc_pagealloc_oob_right),
1363 KUNIT_CASE(kmalloc_pagealloc_uaf),
1364 KUNIT_CASE(kmalloc_pagealloc_invalid_free),
1365 KUNIT_CASE(pagealloc_oob_right),
1366 KUNIT_CASE(pagealloc_uaf),
1367 KUNIT_CASE(kmalloc_large_oob_right),
1368 KUNIT_CASE(krealloc_more_oob),
1369 KUNIT_CASE(krealloc_less_oob),
1370 KUNIT_CASE(krealloc_pagealloc_more_oob),
1371 KUNIT_CASE(krealloc_pagealloc_less_oob),
1372 KUNIT_CASE(krealloc_uaf),
1373 KUNIT_CASE(kmalloc_oob_16),
1374 KUNIT_CASE(kmalloc_uaf_16),
1375 KUNIT_CASE(kmalloc_oob_in_memset),
1376 KUNIT_CASE(kmalloc_oob_memset_2),
1377 KUNIT_CASE(kmalloc_oob_memset_4),
1378 KUNIT_CASE(kmalloc_oob_memset_8),
1379 KUNIT_CASE(kmalloc_oob_memset_16),
1380 KUNIT_CASE(kmalloc_memmove_negative_size),
1381 KUNIT_CASE(kmalloc_memmove_invalid_size),
1382 KUNIT_CASE(kmalloc_uaf),
1383 KUNIT_CASE(kmalloc_uaf_memset),
1384 KUNIT_CASE(kmalloc_uaf2),
1385 KUNIT_CASE(kfree_via_page),
1386 KUNIT_CASE(kfree_via_phys),
1387 KUNIT_CASE(kmem_cache_oob),
1388 KUNIT_CASE(kmem_cache_accounted),
1389 KUNIT_CASE(kmem_cache_bulk),
1390 KUNIT_CASE(kasan_global_oob_right),
1391 KUNIT_CASE(kasan_global_oob_left),
1392 KUNIT_CASE(kasan_stack_oob),
1393 KUNIT_CASE(kasan_alloca_oob_left),
1394 KUNIT_CASE(kasan_alloca_oob_right),
1395 KUNIT_CASE(ksize_unpoisons_memory),
1396 KUNIT_CASE(ksize_uaf),
1397 KUNIT_CASE(kmem_cache_double_free),
1398 KUNIT_CASE(kmem_cache_invalid_free),
1399 KUNIT_CASE(kmem_cache_double_destroy),
1400 KUNIT_CASE(kasan_memchr),
1401 KUNIT_CASE(kasan_memcmp),
1402 KUNIT_CASE(kasan_strings),
1403 KUNIT_CASE(kasan_bitops_generic),
1404 KUNIT_CASE(kasan_bitops_tags),
1405 KUNIT_CASE(kmalloc_double_kzfree),
1406 KUNIT_CASE(vmalloc_helpers_tags),
1407 KUNIT_CASE(vmalloc_oob),
1408 KUNIT_CASE(vmap_tags),
1409 KUNIT_CASE(vm_map_ram_tags),
1410 KUNIT_CASE(vmalloc_percpu),
1411 KUNIT_CASE(match_all_not_assigned),
1412 KUNIT_CASE(match_all_ptr_tag),
1413 KUNIT_CASE(match_all_mem_tag),
1417 static struct kunit_suite kasan_kunit_test_suite = {
1419 .init = kasan_test_init,
1420 .test_cases = kasan_kunit_test_cases,
1421 .exit = kasan_test_exit,
1424 kunit_test_suite(kasan_kunit_test_suite);
1426 MODULE_LICENSE("GPL");