From patchwork Thu May 2 21:09:19 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: 13652076 Received: from smtp-42ae.mail.infomaniak.ch (smtp-42ae.mail.infomaniak.ch [84.16.66.174]) (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 C6385180A82; Thu, 2 May 2024 21:09:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=84.16.66.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714684189; cv=none; b=Q8sODY/9TI5PdcOzNGM8R590B4PNR1L4c2DHt5/hvkt+5IsgK6GuPSDAaFt4x06Yj4RR8oiwDMOru5YJjjZGjIVKNEwLO0xVDB1DQ9h88dfUvTdPXAG0Rgo1ZWBwNNQ6X3nKDAmpqeQ3uiYFPvnVX4UU3W8A2r2YeYJQKxwNP+I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714684189; c=relaxed/simple; bh=o1BZa1ZTcA/1JqgMCw9VzGJzjIj9CX4NqTY0j+UJi3A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ngifeQ9Zo0A8IISQhYoWeD1F8KOjeFev/2rR64F+ypW1lVkhnPpSqbOBHZEnjHbkaGMnthIXqmr0SFtUUMo6q1eBckSZWEjwPOWEdm4zinp0YVs5PDBZo7aQ6EFtcCYUBz0AVQfLUrQeY9r/ZHTu6JxsZ1ZXGpCrSuQpNfQh47o= 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=ZCAO39UD; arc=none smtp.client-ip=84.16.66.174 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="ZCAO39UD" Received: from smtp-4-0000.mail.infomaniak.ch (smtp-4-0000.mail.infomaniak.ch [10.7.10.107]) by smtp-3-3000.mail.infomaniak.ch (Postfix) with ESMTPS id 4VVmlk56XfzMR6; Thu, 2 May 2024 23:09:38 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=digikod.net; s=20191114; t=1714684178; bh=o1BZa1ZTcA/1JqgMCw9VzGJzjIj9CX4NqTY0j+UJi3A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZCAO39UDMhXO/3Dy+ND/jBQS31eS7uykiSkNB+ceJtVo5mgfONIiXqx+uKzg0MHey l7DAy/5vzSpZtMS8neeTeIuPehnRGKLwpLuB+tCV9TNvGKjIbtTKRt4gSnTKJxzj5P QtRLy9/r+favJN/R3wyMVWNrNUQNgkkAaUILKej4= Received: from unknown by smtp-4-0000.mail.infomaniak.ch (Postfix) with ESMTPA id 4VVmlk1Kk4zJ1h; Thu, 2 May 2024 23:09:38 +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, Shuah Khan Subject: [PATCH v4 03/10] selftests/harness: Fix fixture teardown Date: Thu, 2 May 2024 23:09:19 +0200 Message-ID: <20240502210926.145539-4-mic@digikod.net> In-Reply-To: <20240502210926.145539-1-mic@digikod.net> References: <20240502210926.145539-1-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 Make sure fixture teardowns are run when test cases failed, including when _metadata->teardown_parent is set to true. Make sure only one fixture teardown is run per test case, handling the case where the test child forks. Cc: Jakub Kicinski Cc: Shengyu Li Cc: Shuah Khan Fixes: 72d7cb5c190b ("selftests/harness: Prevent infinite loop due to Assert in FIXTURE_TEARDOWN") Fixes: 0710a1a73fb4 ("selftests/harness: Merge TEST_F_FORK() into TEST_F()") Reviewed-by: Kees Cook Signed-off-by: Mickaël Salaün Link: https://lore.kernel.org/r/20240502210926.145539-4-mic@digikod.net --- tools/testing/selftests/kselftest_harness.h | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h index d98702b6955d..55699a762c45 100644 --- a/tools/testing/selftests/kselftest_harness.h +++ b/tools/testing/selftests/kselftest_harness.h @@ -382,7 +382,10 @@ FIXTURE_DATA(fixture_name) self; \ pid_t child = 1; \ int status = 0; \ - bool jmp = false; \ + /* Makes sure there is only one teardown, even when child forks again. */ \ + bool *teardown = mmap(NULL, sizeof(*teardown), \ + PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); \ + *teardown = false; \ memset(&self, 0, sizeof(FIXTURE_DATA(fixture_name))); \ if (setjmp(_metadata->env) == 0) { \ /* Use the same _metadata. */ \ @@ -399,15 +402,16 @@ _metadata->exit_code = KSFT_FAIL; \ } \ } \ - else \ - jmp = true; \ if (child == 0) { \ - if (_metadata->setup_completed && !_metadata->teardown_parent && !jmp) \ + if (_metadata->setup_completed && !_metadata->teardown_parent && \ + __sync_bool_compare_and_swap(teardown, false, true)) \ fixture_name##_teardown(_metadata, &self, variant->data); \ _exit(0); \ } \ - if (_metadata->setup_completed && _metadata->teardown_parent) \ + if (_metadata->setup_completed && _metadata->teardown_parent && \ + __sync_bool_compare_and_swap(teardown, false, true)) \ fixture_name##_teardown(_metadata, &self, variant->data); \ + munmap(teardown, sizeof(*teardown)); \ if (!WIFEXITED(status) && WIFSIGNALED(status)) \ /* Forward signal to __wait_for_test(). */ \ kill(getpid(), WTERMSIG(status)); \