On Fri, Nov 19, 2021 at 3:22 PM Marco Elver <elver@xxxxxxxxxx> wrote:
>
> Add a test case for double-kmem_cache_destroy() detection.
>
> Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
> ---
> lib/test_kasan.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/lib/test_kasan.c b/lib/test_kasan.c
> index 40f7274297c1..4da4b214ed06 100644
> --- a/lib/test_kasan.c
> +++ b/lib/test_kasan.c
> @@ -866,6 +866,16 @@ static void kmem_cache_invalid_free(struct kunit *test)
> kmem_cache_destroy(cache);
> }
>
> +static void kmem_cache_double_destroy(struct kunit *test)
> +{
> + struct kmem_cache *cache;
> +
> + cache = kmem_cache_create("test_cache", 200, 0, 0, NULL);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
> + kmem_cache_destroy(cache);
> + KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_destroy(cache));
> +}
> +
> static void kasan_memchr(struct kunit *test)
> {
> char *ptr;
> @@ -1183,6 +1193,7 @@ static struct kunit_case kasan_kunit_test_cases[] = {
> KUNIT_CASE(ksize_uaf),
> KUNIT_CASE(kmem_cache_double_free),
> KUNIT_CASE(kmem_cache_invalid_free),
> + KUNIT_CASE(kmem_cache_double_destroy),
> KUNIT_CASE(kasan_memchr),
> KUNIT_CASE(kasan_memcmp),
> KUNIT_CASE(kasan_strings),
> --
> 2.34.0.rc2.393.gf8c9666880-goog
>
Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Thanks!
