From: Andrey Konovalov <andreyknvl@google.com> To: Andrew Morton <akpm@linux-foundation.org>, Catalin Marinas <catalin.marinas@arm.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com>, Alexander Potapenko <glider@google.com>, Marco Elver <elver@google.com> Cc: Will Deacon <will.deacon@arm.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Peter Collingbourne <pcc@google.com>, Evgenii Stepanov <eugenis@google.com>, Branislav Rankov <Branislav.Rankov@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov <andreyknvl@google.com> Subject: [PATCH v3 14/15] kasan: add a test for kmem_cache_alloc/free_bulk Date: Thu, 14 Jan 2021 20:36:30 +0100 [thread overview] Message-ID: <b75320408b90f18e369a464c446b6969c2afb06c.1610652890.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1610652890.git.andreyknvl@google.com> Add a test for kmem_cache_alloc/free_bulk to make sure there are no false-positives when these functions are used. Link: https://linux-review.googlesource.com/id/I2a8bf797aecf81baeac61380c567308f319e263d Signed-off-by: Andrey Konovalov <andreyknvl@google.com> --- lib/test_kasan.c | 38 +++++++++++++++++++++++++++++++++----- 1 file changed, 33 insertions(+), 5 deletions(-) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index ab22a653762e..a96376aa7293 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -479,10 +479,11 @@ static void kmem_cache_oob(struct kunit *test) { char *p; size_t size = 200; - struct kmem_cache *cache = kmem_cache_create("test_cache", - size, 0, - 0, NULL); + struct kmem_cache *cache; + + cache = kmem_cache_create("test_cache", size, 0, 0, NULL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache); + p = kmem_cache_alloc(cache, GFP_KERNEL); if (!p) { kunit_err(test, "Allocation failed: %s\n", __func__); @@ -491,11 +492,12 @@ static void kmem_cache_oob(struct kunit *test) } KUNIT_EXPECT_KASAN_FAIL(test, *p = p[size + OOB_TAG_OFF]); + kmem_cache_free(cache, p); kmem_cache_destroy(cache); } -static void memcg_accounted_kmem_cache(struct kunit *test) +static void kmem_cache_accounted(struct kunit *test) { int i; char *p; @@ -522,6 +524,31 @@ static void memcg_accounted_kmem_cache(struct kunit *test) kmem_cache_destroy(cache); } +static void kmem_cache_bulk(struct kunit *test) +{ + struct kmem_cache *cache; + size_t size = 200; + char *p[10]; + bool ret; + int i; + + cache = kmem_cache_create("test_cache", size, 0, 0, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache); + + ret = kmem_cache_alloc_bulk(cache, GFP_KERNEL, ARRAY_SIZE(p), (void **)&p); + if (!ret) { + kunit_err(test, "Allocation failed: %s\n", __func__); + kmem_cache_destroy(cache); + return; + } + + for (i = 0; i < ARRAY_SIZE(p); i++) + p[i][0] = p[i][size - 1] = 42; + + kmem_cache_free_bulk(cache, ARRAY_SIZE(p), (void **)&p); + kmem_cache_destroy(cache); +} + static char global_array[10]; static void kasan_global_oob(struct kunit *test) @@ -961,7 +988,8 @@ static struct kunit_case kasan_kunit_test_cases[] = { KUNIT_CASE(kfree_via_page), KUNIT_CASE(kfree_via_phys), KUNIT_CASE(kmem_cache_oob), - KUNIT_CASE(memcg_accounted_kmem_cache), + KUNIT_CASE(kmem_cache_accounted), + KUNIT_CASE(kmem_cache_bulk), KUNIT_CASE(kasan_global_oob), KUNIT_CASE(kasan_stack_oob), KUNIT_CASE(kasan_alloca_oob_left), -- 2.30.0.284.gd98b1dd5eaa7-goog
WARNING: multiple messages have this Message-ID (diff)
From: Andrey Konovalov <andreyknvl@google.com> To: Andrew Morton <akpm@linux-foundation.org>, Catalin Marinas <catalin.marinas@arm.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com>, Alexander Potapenko <glider@google.com>, Marco Elver <elver@google.com> Cc: Branislav Rankov <Branislav.Rankov@arm.com>, Andrey Konovalov <andreyknvl@google.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Will Deacon <will.deacon@arm.com>, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, Andrey Ryabinin <aryabinin@virtuozzo.com>, Peter Collingbourne <pcc@google.com>, Evgenii Stepanov <eugenis@google.com> Subject: [PATCH v3 14/15] kasan: add a test for kmem_cache_alloc/free_bulk Date: Thu, 14 Jan 2021 20:36:30 +0100 [thread overview] Message-ID: <b75320408b90f18e369a464c446b6969c2afb06c.1610652890.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1610652890.git.andreyknvl@google.com> Add a test for kmem_cache_alloc/free_bulk to make sure there are no false-positives when these functions are used. Link: https://linux-review.googlesource.com/id/I2a8bf797aecf81baeac61380c567308f319e263d Signed-off-by: Andrey Konovalov <andreyknvl@google.com> --- lib/test_kasan.c | 38 +++++++++++++++++++++++++++++++++----- 1 file changed, 33 insertions(+), 5 deletions(-) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index ab22a653762e..a96376aa7293 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -479,10 +479,11 @@ static void kmem_cache_oob(struct kunit *test) { char *p; size_t size = 200; - struct kmem_cache *cache = kmem_cache_create("test_cache", - size, 0, - 0, NULL); + struct kmem_cache *cache; + + cache = kmem_cache_create("test_cache", size, 0, 0, NULL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache); + p = kmem_cache_alloc(cache, GFP_KERNEL); if (!p) { kunit_err(test, "Allocation failed: %s\n", __func__); @@ -491,11 +492,12 @@ static void kmem_cache_oob(struct kunit *test) } KUNIT_EXPECT_KASAN_FAIL(test, *p = p[size + OOB_TAG_OFF]); + kmem_cache_free(cache, p); kmem_cache_destroy(cache); } -static void memcg_accounted_kmem_cache(struct kunit *test) +static void kmem_cache_accounted(struct kunit *test) { int i; char *p; @@ -522,6 +524,31 @@ static void memcg_accounted_kmem_cache(struct kunit *test) kmem_cache_destroy(cache); } +static void kmem_cache_bulk(struct kunit *test) +{ + struct kmem_cache *cache; + size_t size = 200; + char *p[10]; + bool ret; + int i; + + cache = kmem_cache_create("test_cache", size, 0, 0, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache); + + ret = kmem_cache_alloc_bulk(cache, GFP_KERNEL, ARRAY_SIZE(p), (void **)&p); + if (!ret) { + kunit_err(test, "Allocation failed: %s\n", __func__); + kmem_cache_destroy(cache); + return; + } + + for (i = 0; i < ARRAY_SIZE(p); i++) + p[i][0] = p[i][size - 1] = 42; + + kmem_cache_free_bulk(cache, ARRAY_SIZE(p), (void **)&p); + kmem_cache_destroy(cache); +} + static char global_array[10]; static void kasan_global_oob(struct kunit *test) @@ -961,7 +988,8 @@ static struct kunit_case kasan_kunit_test_cases[] = { KUNIT_CASE(kfree_via_page), KUNIT_CASE(kfree_via_phys), KUNIT_CASE(kmem_cache_oob), - KUNIT_CASE(memcg_accounted_kmem_cache), + KUNIT_CASE(kmem_cache_accounted), + KUNIT_CASE(kmem_cache_bulk), KUNIT_CASE(kasan_global_oob), KUNIT_CASE(kasan_stack_oob), KUNIT_CASE(kasan_alloca_oob_left), -- 2.30.0.284.gd98b1dd5eaa7-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-14 19:38 UTC|newest] Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-14 19:36 [PATCH v3 00/15] kasan: HW_TAGS tests support and fixes Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 01/15] kasan: prefix global functions with kasan_ Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 02/15] kasan: clarify HW_TAGS impact on TBI Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 03/15] kasan: clean up comments in tests Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 13:26 ` Alexander Potapenko 2021-01-15 13:26 ` Alexander Potapenko 2021-01-15 13:26 ` Alexander Potapenko 2021-01-14 19:36 ` [PATCH v3 04/15] kasan: add macros to simplify checking test constraints Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 05/15] kasan: add match-all tag tests Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 13:33 ` Alexander Potapenko 2021-01-15 13:33 ` Alexander Potapenko 2021-01-15 13:33 ` Alexander Potapenko 2021-01-14 19:36 ` [PATCH v3 06/15] kasan, arm64: allow using KUnit tests with HW_TAGS mode Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 07/15] kasan: rename CONFIG_TEST_KASAN_MODULE Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 08/15] kasan: add compiler barriers to KUNIT_EXPECT_KASAN_FAIL Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 14:11 ` Alexander Potapenko 2021-01-15 14:11 ` Alexander Potapenko 2021-01-15 14:11 ` Alexander Potapenko 2021-01-14 19:36 ` [PATCH v3 09/15] kasan: adapt kmalloc_uaf2 test to HW_TAGS mode Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 10/15] kasan: fix memory corruption in kasan_bitops_tags test Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 11/15] kasan: move _RET_IP_ to inline wrappers Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 13:19 ` Marco Elver 2021-01-15 13:19 ` Marco Elver 2021-01-15 14:07 ` Alexander Potapenko 2021-01-15 14:07 ` Alexander Potapenko 2021-01-15 14:07 ` Alexander Potapenko 2021-01-14 19:36 ` [PATCH v3 12/15] kasan: fix bug detection via ksize for HW_TAGS mode Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 13:17 ` Marco Elver 2021-01-15 13:17 ` Marco Elver 2021-01-15 14:04 ` Alexander Potapenko 2021-01-15 14:04 ` Alexander Potapenko 2021-01-15 14:04 ` Alexander Potapenko 2021-01-14 19:36 ` [PATCH v3 13/15] kasan: add proper page allocator tests Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov [this message] 2021-01-14 19:36 ` [PATCH v3 14/15] kasan: add a test for kmem_cache_alloc/free_bulk Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 13:16 ` Marco Elver 2021-01-15 13:16 ` Marco Elver 2021-01-15 13:49 ` Alexander Potapenko 2021-01-15 13:49 ` Alexander Potapenko 2021-01-15 13:49 ` Alexander Potapenko 2021-01-15 17:24 ` Andrey Konovalov 2021-01-15 17:24 ` Andrey Konovalov 2021-01-15 17:24 ` Andrey Konovalov 2021-01-14 19:36 ` [PATCH v3 15/15] kasan: don't run tests when KASAN is not enabled Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-14 19:36 ` Andrey Konovalov 2021-01-15 13:13 ` Marco Elver 2021-01-15 13:13 ` Marco Elver 2021-01-15 13:44 ` Alexander Potapenko 2021-01-15 13:44 ` Alexander Potapenko 2021-01-15 13:44 ` Alexander Potapenko
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