diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_kasan.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 479c31a5dc21..785e724ce0d8 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -69,10 +69,10 @@ static void kasan_test_exit(struct kunit *test) * resource named "kasan_data". Do not use this name for KUnit resources * outside of KASAN tests. * - * For hardware tag-based KASAN, when a tag fault happens, tag checking is - * normally auto-disabled. When this happens, this test handler reenables - * tag checking. As tag checking can be only disabled or enabled per CPU, this - * handler disables migration (preemption). + * For hardware tag-based KASAN in sync mode, when a tag fault happens, tag + * checking is auto-disabled. When this happens, this test handler reenables + * tag checking. As tag checking can be only disabled or enabled per CPU, + * this handler disables migration (preemption). * * Since the compiler doesn't see that the expression can change the fail_data * fields, it can reorder or optimize away the accesses to those fields. @@ -80,7 +80,8 @@ static void kasan_test_exit(struct kunit *test) * expression to prevent that. */ #define KUNIT_EXPECT_KASAN_FAIL(test, expression) do { \ - if (IS_ENABLED(CONFIG_KASAN_HW_TAGS)) \ + if (IS_ENABLED(CONFIG_KASAN_HW_TAGS) && \ + !kasan_async_mode_enabled()) \ migrate_disable(); \ WRITE_ONCE(fail_data.report_expected, true); \ WRITE_ONCE(fail_data.report_found, false); \ @@ -92,10 +93,14 @@ static void kasan_test_exit(struct kunit *test) barrier(); \ expression; \ barrier(); \ + if (kasan_async_mode_enabled()) \ + kasan_force_async_fault(); \ + barrier(); \ KUNIT_EXPECT_EQ(test, \ READ_ONCE(fail_data.report_expected), \ READ_ONCE(fail_data.report_found)); \ - if (IS_ENABLED(CONFIG_KASAN_HW_TAGS)) { \ + if (IS_ENABLED(CONFIG_KASAN_HW_TAGS) && \ + !kasan_async_mode_enabled()) { \ if (READ_ONCE(fail_data.report_found)) \ kasan_enable_tagging_sync(); \ migrate_enable(); \ |