From patchwork Mon Dec 2 11:12:49 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yann Droneaud X-Patchwork-Id: 3264801 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 1D5D5BEEAD for ; Mon, 2 Dec 2013 11:13:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0E1C620240 for ; Mon, 2 Dec 2013 11:13:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE50720279 for ; Mon, 2 Dec 2013 11:13:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753436Ab3LBLNx (ORCPT ); Mon, 2 Dec 2013 06:13:53 -0500 Received: from smtp2-g21.free.fr ([212.27.42.2]:50419 "EHLO smtp2-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753331Ab3LBLNw (ORCPT ); Mon, 2 Dec 2013 06:13:52 -0500 Received: from localhost.localdomain (unknown [37.163.28.200]) by smtp2-g21.free.fr (Postfix) with ESMTP id D52084B00A7; Mon, 2 Dec 2013 12:13:45 +0100 (CET) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by localhost.localdomain (8.14.7/8.14.7) with ESMTP id rB2BDgqH023915; Mon, 2 Dec 2013 12:13:43 +0100 Received: (from ydroneaud@localhost) by localhost.localdomain (8.14.7/8.14.7/Submit) id rB2BDeGA023912; Mon, 2 Dec 2013 12:13:40 +0100 From: Yann Droneaud To: Roland Dreier , linux-rdma@vger.kernel.org Cc: Or Gerlitz , Matan Barak , Yann Droneaud Subject: [PATCH v2 for v3.13 7/8] IB/uverbs: set error code when fail to consume all flow_spec items Date: Mon, 2 Dec 2013 12:12:49 +0100 Message-Id: <23fb7b2a4d63fe5f33f00591ab61d7a0cda0de56.1385981934.git.ydroneaud@opteya.com> X-Mailer: git-send-email 1.8.4.2 In-Reply-To: References: In-Reply-To: References: Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If the flow_spec items parsed count does not match the number of items declared in the flow_attr command, or if not all bytes are used for flow_spec items (eg. trailing garbage), a log message is reported and the function leave through the error path. Unfortunately the error code is currently not set. This patch set error code to -EINVAL in such cases, so that the error is reported to userspace instead of silently fail. Link: http://marc.info/?i=cover.1385981934.git.ydroneaud@opteya.com Signed-off-by: Yann Droneaud --- drivers/infiniband/core/uverbs_cmd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index dd1c5b6ab019..5976d885f408 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -2738,6 +2738,7 @@ int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", i, cmd.flow_attr.size); + err = -EINVAL; goto err_free; } flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);