From patchwork Mon Apr 29 19:19:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= X-Patchwork-Id: 793542 Received: from smtp-8faf.mail.infomaniak.ch (smtp-8faf.mail.infomaniak.ch [83.166.143.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE68013C68A for ; Mon, 29 Apr 2024 19:19:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.166.143.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714418367; cv=none; b=kMpg1f9H2mHjqniHVG5u/El1kpIIo1lb4pMiYoIGTSF8wTN0QdRX5qHCVtslv1DAwPYhKUI5xN0j8v3vOo+OAr+9IW3/0dlG3CCx8g+e9ZVgiYCRNTDy7jPRzhyjW0klelurA40qHPVtYI4/onZ/tQWEteboYsg6Fdl2bSUYz1A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714418367; c=relaxed/simple; bh=3PXhxV7iXwVfyBsouE+oC23MF65qM+eZR7kMA49Oe2w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LKcIsQ8c167YAqXP1Eqo40qU1/7UGnKfR26USV/bhVNN+JGCYtgjn3ahBuM4nACoqCZeHorKBguXm5OJdrrfCQlLjYLAkOE+Wb15PYPe8DrhI0CWgFVOIbG4ZoolF+wy1XprfJxjxE9OW9geST8krmMZB1Dr7ZL6NkJh4iotqcE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=digikod.net; spf=pass smtp.mailfrom=digikod.net; dkim=pass (1024-bit key) header.d=digikod.net header.i=@digikod.net header.b=M8CMfpj1; arc=none smtp.client-ip=83.166.143.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=digikod.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=digikod.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=digikod.net header.i=@digikod.net header.b="M8CMfpj1" Received: from smtp-4-0001.mail.infomaniak.ch (smtp-4-0001.mail.infomaniak.ch [10.7.10.108]) by smtp-4-3000.mail.infomaniak.ch (Postfix) with ESMTPS id 4VStRv0dmzzCTK; Mon, 29 Apr 2024 21:19:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=digikod.net; s=20191114; t=1714418362; bh=3PXhxV7iXwVfyBsouE+oC23MF65qM+eZR7kMA49Oe2w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M8CMfpj1OT5bUx1X0iG6sJ409K/5jXoYP9l431ZQqVxYSgbIFO8GxqSowRMASLcmM /D+uQppb1BHgHFBtunS1XH/NvP/Dk+syLdQMsAu/3QH0FqT9pXMifVwvOHwmRiiH1U fsgm5Kwsys0ttBfdiunMjFerVtbMjxKUbP9Vgu4E= Received: from unknown by smtp-4-0001.mail.infomaniak.ch (Postfix) with ESMTPA id 4VStRt3TLWzXPb; Mon, 29 Apr 2024 21:19:22 +0200 (CEST) From: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= To: Christian Brauner , Jakub Kicinski , Kees Cook , Mark Brown , Shengyu Li , Shuah Khan Cc: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= , "David S . Miller" , =?utf-8?q?G=C3=BCnther_Noack?= , Will Drewry , kernel test robot , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Shuah Khan Subject: [PATCH v3 8/9] selftests/harness: Share _metadata between forked processes Date: Mon, 29 Apr 2024 21:19:10 +0200 Message-ID: <20240429191911.2552580-9-mic@digikod.net> In-Reply-To: <20240429191911.2552580-1-mic@digikod.net> References: <20240429191911.2552580-1-mic@digikod.net> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Infomaniak-Routing: alpha Unconditionally share _metadata between all forked processes, which enables to actually catch errors which were previously ignored. This is required for a following commit replacing vfork() with clone3() and CLONE_VFORK (i.e. not sharing the full memory) . It should also be useful to share _metadata to extend expectations to test process's forks. For instance, this change identified a wrong expectation in pidfd_setns_test. Cc: Jakub Kicinski Cc: Shuah Khan Cc: Will Drewry Reviewed-by: Kees Cook Signed-off-by: Mickaël Salaün Link: https://lore.kernel.org/r/20240429191911.2552580-9-mic@digikod.net --- Changes since v1: * Extract change from a bigger patch (suggested by Kees). --- tools/testing/selftests/kselftest_harness.h | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h index 201040207c85..abf2ffd2094f 100644 --- a/tools/testing/selftests/kselftest_harness.h +++ b/tools/testing/selftests/kselftest_harness.h @@ -430,19 +430,17 @@ static inline pid_t clone3_vfork(void) kill(getpid(), WTERMSIG(status)); \ __test_check_assert(_metadata); \ } \ - static struct __test_metadata \ - _##fixture_name##_##test_name##_object = { \ - .name = #test_name, \ - .fn = &wrapper_##fixture_name##_##test_name, \ - .fixture = &_##fixture_name##_fixture_object, \ - .termsig = signal, \ - .timeout = tmout, \ - .teardown_parent = false, \ - }; \ static void __attribute__((constructor)) \ _register_##fixture_name##_##test_name(void) \ { \ - __register_test(&_##fixture_name##_##test_name##_object); \ + struct __test_metadata *object = mmap(NULL, sizeof(*object), \ + PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); \ + object->name = #test_name; \ + object->fn = &wrapper_##fixture_name##_##test_name; \ + object->fixture = &_##fixture_name##_fixture_object; \ + object->termsig = signal; \ + object->timeout = tmout; \ + __register_test(object); \ } \ static void fixture_name##_##test_name( \ struct __test_metadata __attribute__((unused)) *_metadata, \