From: Andrey Konovalov <andreyknvl@xxxxxxxxx> kmalloc_uaf_memset() writes to freed memory, which is only safe with the GENERIC mode (as it uses quarantine). For other modes, this test corrupts kernel memory, which might result in a crash. Only enable kmalloc_uaf_memset() for the GENERIC mode. Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxx> --- lib/test_kasan.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 0b5698cd7d1d..efd0da5c750f 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -528,6 +528,12 @@ static void kmalloc_uaf_memset(struct kunit *test) char *ptr; size_t size = 33; + /* + * Only generic KASAN uses quarantine, which is required to avoid a + * kernel memory corruption this test causes. + */ + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC); + ptr = kmalloc(size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); -- 2.25.1
