From patchwork Sat May 11 17:14:43 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: 796607 Received: from smtp-bc0c.mail.infomaniak.ch (smtp-bc0c.mail.infomaniak.ch [45.157.188.12]) (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 599321BF50 for ; Sat, 11 May 2024 17:15:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.157.188.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715447707; cv=none; b=VBqyikoMiTh66uV04Bg4Jwh+9c3D2796yV06ACkHnxGepPhkMr/zxIY7GeyKKnummFEQVwDPWv0/4x9LpB4XMwLAm1nz5ZVR0MCF+N4ubgG0d1TU8ChR73rRWcl3PKw2lpy+lPunGDY2vakuug5rjXEfZgYdCanNdW6KOUX7iy0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715447707; c=relaxed/simple; bh=6guh9BQ5rVONa/bVyJCE/mpvREYMTA6JDcfQf6vaLP4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FhevbsTspPduMke5DlwERT3ZWCtIuLzU6ld84lKKL0CdVYwtDDtOATz0gcGwFQQmv7yj98stA0d6om4uR9lh8jAVdg/LvIDrdiiD7ulq9TCXyAl6o2SH93T6FTD1EoMMF2Fp4GoweECbSlfcrjhZColoJiXUTZesIgCi9fkDfVE= 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=yrDpfYn5; arc=none smtp.client-ip=45.157.188.12 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="yrDpfYn5" Received: from smtp-3-0000.mail.infomaniak.ch (smtp-3-0000.mail.infomaniak.ch [10.4.36.107]) by smtp-3-3000.mail.infomaniak.ch (Postfix) with ESMTPS id 4VcC6s2hVRzlMR; Sat, 11 May 2024 19:15:01 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=digikod.net; s=20191114; t=1715447701; bh=ItMTZYFsQr6hEmRCd+hw3M8K9T4Nec7f+7qfQcftklE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yrDpfYn5sBSTPp2UkPB4Uhtvy93ocHWXxkXIgH5aOxQpuhJhFd4X3Yk0NksyC6VeV bQBRZN2nlNnP6Yie9El0d0KYRTBkqtH47MhExd9rLSiBGE4ON9C7JgmB1zNeRR+zFV hEtC9AWfiMligrgX+qFyIi2DtUvYY20tndoaIPVw= Received: from unknown by smtp-3-0000.mail.infomaniak.ch (Postfix) with ESMTPA id 4VcC6r58Z8z9Rg; Sat, 11 May 2024 19:15:00 +0200 (CEST) From: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= To: Christian Brauner , Greg Kroah-Hartman , Jakub Kicinski , Kees Cook , Linus Torvalds , Mark Brown , Sasha Levin , Sean Christopherson , Shengyu Li , Shuah Khan , Shuah Khan Cc: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= , Bagas Sanjaya , Brendan Higgins , David Gow , "David S . Miller" , Florian Fainelli , =?utf-8?q?G=C3=BCnther_No?= =?utf-8?q?ack?= , Jon Hunter , Ron Economos , Ronald Warsow , Stephen Rothwell , Will Drewry , kernel test robot , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netdev@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH v7 08/10] selftests/harness: Share _metadata between forked processes Date: Sat, 11 May 2024 19:14:43 +0200 Message-ID: <20240511171445.904356-9-mic@digikod.net> In-Reply-To: <20240511171445.904356-1-mic@digikod.net> References: <20240511171445.904356-1-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. Because this _metadata is used by the new XFAIL_ADD(), use a global pointer initialized in TEST_F(). This is OK because only XFAIL_ADD() use it, and XFAIL_ADD() already depends on TEST_F(). Cc: Jakub Kicinski Cc: Shuah Khan Cc: Will Drewry Reviewed-by: Kees Cook Signed-off-by: Mickaël Salaün Link: https://lore.kernel.org/r/20240511171445.904356-9-mic@digikod.net --- Changes since v6: * Use a global pointer per TEST_F() and complete build of the __test_xfail object in the xfail constructor to fix XFAIL_ADD(): https://lore.kernel.org/r/202405100339.vfBe0t9C-lkp@intel.com/ Changes since v4: * Reset _metadata's aborted and setup_completed fields. Changes since v1: * Extract change from a bigger patch (suggested by Kees). --- tools/testing/selftests/kselftest_harness.h | 26 ++++++++++++--------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h index 201040207c85..28415798fa60 100644 --- a/tools/testing/selftests/kselftest_harness.h +++ b/tools/testing/selftests/kselftest_harness.h @@ -430,19 +430,19 @@ 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 struct __test_metadata *_##fixture_name##_##test_name##_object; \ 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; \ + _##fixture_name##_##test_name##_object = object; \ + __register_test(object); \ } \ static void fixture_name##_##test_name( \ struct __test_metadata __attribute__((unused)) *_metadata, \ @@ -850,11 +850,12 @@ struct __test_xfail { { \ .fixture = &_##fixture_name##_fixture_object, \ .variant = &_##fixture_name##_##variant_name##_object, \ - .test = &_##fixture_name##_##test_name##_object, \ }; \ static void __attribute__((constructor)) \ _register_##fixture_name##_##variant_name##_##test_name##_xfail(void) \ { \ + _##fixture_name##_##variant_name##_##test_name##_xfail.test = \ + _##fixture_name##_##test_name##_object; \ __register_xfail(&_##fixture_name##_##variant_name##_##test_name##_xfail); \ } @@ -1181,6 +1182,9 @@ void __run_test(struct __fixture_metadata *f, /* reset test struct */ t->exit_code = KSFT_PASS; t->trigger = 0; + t->aborted = false; + t->setup_completed = false; + memset(t->env, 0, sizeof(t->env)); memset(t->results->reason, 0, sizeof(t->results->reason)); if (asprintf(&test_name, "%s%s%s.%s", f->name,