From patchwork Mon Sep 6 19:06:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 1525037 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=virtuozzo.com header.i=@virtuozzo.com header.a=rsa-sha256 header.s=selector2 header.b=oyr8xzCv; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4H3Hxd21WTz9s5R for ; Tue, 7 Sep 2021 05:08:51 +1000 (AEST) Received: from localhost ([::1]:54092 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mNJz5-0005Z4-9J for incoming@patchwork.ozlabs.org; Mon, 06 Sep 2021 15:08:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42286) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNJxc-0005XQ-Om; Mon, 06 Sep 2021 15:07:17 -0400 Received: from mail-db8eur05on2098.outbound.protection.outlook.com ([40.107.20.98]:34209 helo=EUR05-DB8-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNJxa-0002G7-4K; Mon, 06 Sep 2021 15:07:16 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=LPRXeNNdISanqEZtbdNfWiRnMO5Tp3r+oADXKw5NLLsib9wR4xDOSyDsihnLxe8StvqLUysp4z2ER17so5Jov6P9bvfq6piN85tOn8FWIOTp14Ea357eZwecxY1MdlBKfYsL4lp+Z41SuoOn19Z3lnTM+I4UhiZANHfsXZcejzVN6a9j/bItyMvI8fmHDw6GAKkbhNHy8KeubIa8G8jB41wwhzLVQV/3/hYvqwORfOak28PlRt0S0tfujrGy3nzzyKeUok4gep3+kpp1D2wGGcEBdeGknMplqoBs+UvNQvaJAKs6yyDBCosahebVXnruBEtwOBFYFAePKuvOdjbEIA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=p6A6rdt5gViLesmH5ovI1+VQkhBE9y0YSkimt38CKWo=; b=CpdscptlQ5o22/cokwXq2UdZrB+2hEVnefx3z+GH2PQyX6oYnYLvKVvyw6RCnxsqFbEyypfUd5xfbYmSt1VBER5cIJLDGSY/qcGwLirZPjZ730wKwuCrMx7wdbLNdvWsu/TG7YRP6DrXp7OE2ms+E9zrckwfNvb5zA0r6wGrQ+aKsnYaKv0QGkYO5B2Oe9YOdWWckezDdFtI+m+pQS270q2ow6drqsfdLz6e+2Hj4F79nYTo3DPk2B56CKXExIQk0RbSiNXLZgB8IOYRFwgcClqBs+WX6rUbjUXIWDWNX+AbNJvNkkq6o3d+36y++778jJWIK3bX7QcSa+Ntx8YxLA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=virtuozzo.com; dmarc=pass action=none header.from=virtuozzo.com; dkim=pass header.d=virtuozzo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=virtuozzo.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=p6A6rdt5gViLesmH5ovI1+VQkhBE9y0YSkimt38CKWo=; b=oyr8xzCvpyG3PHzD3+xWD7m4z+kOrS4MorehQ97Rnk6S3x/0ShC+fX4xvQE9Fcvfpg+N0fccGgGm7MjxEd/gA9j0H10bNE4V6Ey0BpTSeNX8rQQW+59zAUB9xu29F5oD6GI6iFMm374THghpqqu36cwgV8kGPo18fKhD8zYbRK8= Authentication-Results: nongnu.org; dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=virtuozzo.com; Received: from AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) by AS8PR08MB6038.eurprd08.prod.outlook.com (2603:10a6:20b:23f::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4478.24; Mon, 6 Sep 2021 19:07:09 +0000 Received: from AM7PR08MB5494.eurprd08.prod.outlook.com ([fe80::2817:53b3:f8b4:fe22]) by AM7PR08MB5494.eurprd08.prod.outlook.com ([fe80::2817:53b3:f8b4:fe22%8]) with mapi id 15.20.4478.025; Mon, 6 Sep 2021 19:07:09 +0000 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, armbru@redhat.com, hreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com, eblake@redhat.com, den@openvz.org Subject: [PATCH v3 1/9] nbd/client-connection: nbd_co_establish_connection(): fix non set errp Date: Mon, 6 Sep 2021 22:06:46 +0300 Message-Id: <20210906190654.183421-2-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210906190654.183421-1-vsementsov@virtuozzo.com> References: <20210906190654.183421-1-vsementsov@virtuozzo.com> X-ClientProxiedBy: HE1PR05CA0302.eurprd05.prod.outlook.com (2603:10a6:7:93::33) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (185.215.60.196) by HE1PR05CA0302.eurprd05.prod.outlook.com (2603:10a6:7:93::33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4478.17 via Frontend Transport; Mon, 6 Sep 2021 19:07:08 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 135c5abe-12cd-4188-6f50-08d9716986c2 X-MS-TrafficTypeDiagnostic: AS8PR08MB6038: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:AM7PR08MB5494.eurprd08.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(6486002)(6916009)(8676002)(6666004)(2906002)(956004)(26005)(66476007)(66556008)(66946007)(6512007)(186003)(5660300002)(316002)(52116002)(6506007)(4744005)(4326008)(508600001)(2616005)(83380400001)(38350700002)(107886003)(1076003)(38100700002)(36756003)(86362001)(8936002); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-Network-Message-Id: 135c5abe-12cd-4188-6f50-08d9716986c2 X-MS-Exchange-CrossTenant-AuthSource: AM7PR08MB5494.eurprd08.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Sep 2021 19:07:09.8260 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ArngqNIlUiOtz5fJnfnpDCKkL3PJnVyrOE0M6miOxHFRAXYZfAk/+dYDxpE5QfMOyvsSk5opwXT2pAwy1WDLrgwgeu2wuksFxoLSSGtg8Do= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR08MB6038 Received-SPF: pass client-ip=40.107.20.98; envelope-from=vsementsov@virtuozzo.com; helo=EUR05-DB8-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" When we don't have a connection and blocking is false, we return NULL but don't set errp. That's wrong. We have two paths for calling nbd_co_establish_connection(): 1. nbd_open() -> nbd_do_establish_connection() -> ... but that will never set blocking=false 2. nbd_reconnect_attempt() -> nbd_co_do_establish_connection() -> ... but that uses errp=NULL So, we are safe with our wrong errp policy in nbd_co_establish_connection(). Still let's fix it. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Blake --- nbd/client-connection.c | 1 + 1 file changed, 1 insertion(+) diff --git a/nbd/client-connection.c b/nbd/client-connection.c index 7123b1e189..695f855754 100644 --- a/nbd/client-connection.c +++ b/nbd/client-connection.c @@ -318,6 +318,7 @@ nbd_co_establish_connection(NBDClientConnection *conn, NBDExportInfo *info, } if (!blocking) { + error_setg(errp, "No connection at the moment"); return NULL; }