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SubjectRe: [PATCH v11 5/5] kasan: don't run tests in async mode
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On 1/30/21 4:52 PM, Vincenzo Frascino wrote:
> From: Andrey Konovalov <andreyknvl@google.com>
>
> Asynchronous KASAN mode doesn't guarantee that a tag fault will be
> detected immediately and causes tests to fail. Forbid running them
> in asynchronous mode.
>
> Signed-off-by: Andrey Konovalov <andreyknvl@google.com>

Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

With:

[ 18.283644] 1..1
[ 18.284167] # Subtest: kasan
[ 18.284444] 1..45
[ 18.295536] # kmalloc_oob_right: can't run KASAN tests in async mode
[ 18.296873] # kmalloc_oob_right: failed to initialize: -1
[ 18.303714] not ok 1 - kmalloc_oob_right
[ 18.316439] # kmalloc_oob_left: can't run KASAN tests in async mode
[ 18.319466] # kmalloc_oob_left: failed to initialize: -1
[ 18.325001] not ok 2 - kmalloc_oob_left

Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

> ---
> lib/test_kasan.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/lib/test_kasan.c b/lib/test_kasan.c
> index 7285dcf9fcc1..f82d9630cae1 100644
> --- a/lib/test_kasan.c
> +++ b/lib/test_kasan.c
> @@ -51,6 +51,10 @@ static int kasan_test_init(struct kunit *test)
> kunit_err(test, "can't run KASAN tests with KASAN disabled");
> return -1;
> }
> + if (kasan_flag_async) {
> + kunit_err(test, "can't run KASAN tests in async mode");
> + return -1;
> + }
>
> multishot = kasan_save_enable_multi_shot();
> hw_set_tagging_report_once(false);
>

--
Regards,
Vincenzo

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