From patchwork Fri May 3 10:58:18 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: 794705 Received: from smtp-190a.mail.infomaniak.ch (smtp-190a.mail.infomaniak.ch [185.125.25.10]) (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 6DC6D153832 for ; Fri, 3 May 2024 10:58:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.125.25.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714733924; cv=none; b=XonDpBzexfm1bFSl9y2bApmGUVu2lvKVHjnkbFVdxvC928rnqbCsKO4Y2oj8we/kx/gRdXcJpZVPoC6Vp8MAisz52V/XsN3B8exCHRoeyJzjSr5AQlgptx2/gPZMhAHvA1KOpPZEsmuhwlFXoQXEPznFmvxJM1rKfW8s7ORtses= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714733924; c=relaxed/simple; bh=2Y0nOVcRkIUq7/FBVt+wFbHUgDdz1Cx5Myja8BL91y4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=mC3lc587Scc3CYR8OpHpP+elwk2/nbSbEPETqhyBRrMEODCwZQuVFkhxA3t9n9XBvR17klI9tQSy/NBBOpvAEAn1RRQcFW9VqFmBQsMJqqPt5PGnQO/g1cnxbMFtZzMd18KuWdjHoMWlc70ZoVzZwUpgvwPuwzWwSSvK2p5B+Xc= 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=RfmW2Yhl; arc=none smtp.client-ip=185.125.25.10 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="RfmW2Yhl" Received: from smtp-4-0001.mail.infomaniak.ch (smtp-4-0001.mail.infomaniak.ch [10.7.10.108]) by smtp-3-3000.mail.infomaniak.ch (Postfix) with ESMTPS id 4VW78H4xfMzNjH; Fri, 3 May 2024 12:58:39 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=digikod.net; s=20191114; t=1714733919; bh=2Y0nOVcRkIUq7/FBVt+wFbHUgDdz1Cx5Myja8BL91y4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RfmW2YhlSvEvMhJ1eDX70f4rrmeBcgAdpNHcyq1KkAX4TpL7R0dTCy8vKfAw1nf2T 5RxGRCqOePu6j8kPEUc7KkiKnw6jjHSTXyIft9MaZM/ayY6Wdkjzs2zbt2WgDXFeiu 9XRKeMapi1lsAOmDHn1nVfnFGp4tee+jlmWl4+oU= Received: from unknown by smtp-4-0001.mail.infomaniak.ch (Postfix) with ESMTPA id 4VW78H1XrYzcTF; Fri, 3 May 2024 12:58:39 +0200 (CEST) From: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= To: Christian Brauner , Jakub Kicinski , Kees Cook , Mark Brown , Sean Christopherson , 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 , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netdev@vger.kernel.org, Shuah Khan Subject: [PATCH v5 08/10] selftests/harness: Share _metadata between forked processes Date: Fri, 3 May 2024 12:58:18 +0200 Message-ID: <20240503105820.300927-9-mic@digikod.net> In-Reply-To: <20240503105820.300927-1-mic@digikod.net> References: <20240503105820.300927-1-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/20240503105820.300927-9-mic@digikod.net --- 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 | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h index 201040207c85..ea78bec5856f 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, \ @@ -1181,6 +1179,9 @@ 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,