From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0225C4724C for ; Thu, 30 Apr 2020 13:52:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 909E124957 for ; Thu, 30 Apr 2020 13:52:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588254753; bh=/pCLZHYr2OmVi2mS3ZUGZ80/NyMpK1+qw2ThEw/BWPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xx9fE3IORLDVh5ScDTH/KWkOgPlhlIzx6g5hugqglLmDMycV4buXe4Az0J9Qi3jew 8uOIgVMKWUA1nHB+9xkD1vIt0elasbLwq0+/mJHKXvwV521wV0aq1J2QvpuDlw63BA 348JMQfkK+woEw5GVcpywDe/blpOJ8BwjhJ8X/bk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728422AbgD3Nwb (ORCPT ); Thu, 30 Apr 2020 09:52:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:33616 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728413AbgD3Nwa (ORCPT ); Thu, 30 Apr 2020 09:52:30 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 562A220870; Thu, 30 Apr 2020 13:52:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588254750; bh=/pCLZHYr2OmVi2mS3ZUGZ80/NyMpK1+qw2ThEw/BWPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S2qOmiAfF3VSRcp5kx3imh3IDyQbnS80tq/U1sKk1cTkuv75yhYeMdqyEF/mpKSIy tC9VHop6TruWVvHXhl4KMxECEHTYLYKctL52LK9FiS9Jj697TZZVlYJBGOBJXQRRng 6cp5imhMWAPR5LcaeWei4QnZDFcO/y2oWCZ2+C5E= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tyler Hicks , Shuah Khan , Sasha Levin , linux-api@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 09/57] selftests/ipc: Fix test failure seen after initial test run Date: Thu, 30 Apr 2020 09:51:30 -0400 Message-Id: <20200430135218.20372-9-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200430135218.20372-1-sashal@kernel.org> References: <20200430135218.20372-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-api-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org From: Tyler Hicks [ Upstream commit b87080eab4c1377706c113fc9c0157f19ea8fed1 ] After successfully running the IPC msgque test once, subsequent runs result in a test failure: $ sudo ./run_kselftest.sh TAP version 13 1..1 # selftests: ipc: msgque # Failed to get stats for IPC queue with id 0 # Failed to dump queue: -22 # Bail out! # # Pass 0 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0 not ok 1 selftests: ipc: msgque # exit=1 The dump_queue() function loops through the possible message queue index values using calls to msgctl(kern_id, MSG_STAT, ...) where kern_id represents the index value. The first time the test is ran, the initial index value of 0 is valid and the test is able to complete. The index value of 0 is not valid in subsequent test runs and the loop attempts to try index values of 1, 2, 3, and so on until a valid index value is found that corresponds to the message queue created earlier in the test. The msgctl() syscall returns -1 and sets errno to EINVAL when invalid index values are used. The test failure is caused by incorrectly comparing errno to -EINVAL when cycling through possible index values. Fix invalid test failures on subsequent runs of the msgque test by correctly comparing errno values to a non-negated EINVAL. Fixes: 3a665531a3b7 ("selftests: IPC message queue copy feature test") Signed-off-by: Tyler Hicks Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- tools/testing/selftests/ipc/msgque.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/ipc/msgque.c b/tools/testing/selftests/ipc/msgque.c index 4c156aeab6b80..5ec4d9e18806c 100644 --- a/tools/testing/selftests/ipc/msgque.c +++ b/tools/testing/selftests/ipc/msgque.c @@ -137,7 +137,7 @@ int dump_queue(struct msgque_data *msgque) for (kern_id = 0; kern_id < 256; kern_id++) { ret = msgctl(kern_id, MSG_STAT, &ds); if (ret < 0) { - if (errno == -EINVAL) + if (errno == EINVAL) continue; printf("Failed to get stats for IPC queue with id %d\n", kern_id); -- 2.20.1