From patchwork Thu Oct 29 13:43:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Chen X-Patchwork-Id: 311425 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=-11.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_SANE_1 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 3045BC2D0A3 for ; Thu, 29 Oct 2020 13:49:44 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9BC952076A for ; Thu, 29 Oct 2020 13:49:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9BC952076A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36670 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kY8JC-0000ul-H7 for qemu-devel@archiver.kernel.org; Thu, 29 Oct 2020 09:49:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42134) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kY8DS-0003Ip-37; Thu, 29 Oct 2020 09:43:46 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:2308) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kY8DP-0000Nk-Mu; Thu, 29 Oct 2020 09:43:45 -0400 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CMRVJ0jfZzkbrF; Thu, 29 Oct 2020 21:43:36 +0800 (CST) Received: from [10.174.187.138] (10.174.187.138) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Thu, 29 Oct 2020 21:43:27 +0800 Message-ID: <5F9AC6FF.4000301@huawei.com> Date: Thu, 29 Oct 2020 21:43:27 +0800 From: AlexChen User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: , , , Laurent Vivier Subject: [PATCH] contrib/rdmacm-mux: Fix error condition in hash_tbl_search_fd_by_ifid() X-Originating-IP: [10.174.187.138] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.190; envelope-from=alex.chen@huawei.com; helo=szxga04-in.huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/29 09:43:35 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=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: , Cc: qemu-trivial@nongnu.org, zhengchuan@huawei.com, QEMU , zhang.zhanghailiang@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When fd is not found according to ifid, the _hash_tbl_search_fd_by_ifid() returns 0 and assigns the result to *fd, so We have to check that *fd is 0, not that fd is 0. Reported-by: Euler Robot Signed-off-by: AlexChen Reviewed-by: Marcel Apfelbaum Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: AlexChen <alex.chen@huawei.com>
--- contrib/rdmacm-mux/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/contrib/rdmacm-mux/main.c b/contrib/rdmacm-mux/main.c index bd82abbad3..771ca01e03 100644 --- a/contrib/rdmacm-mux/main.c +++ b/contrib/rdmacm-mux/main.c @@ -186,7 +186,7 @@ static int hash_tbl_search_fd_by_ifid(int *fd, __be64 *gid_ifid) *fd = _hash_tbl_search_fd_by_ifid(gid_ifid); pthread_rwlock_unlock(&server.lock); - if (!fd) { + if (!*fd) { syslog(LOG_WARNING, "Can't find matching for ifid 0x%llx\n", *gid_ifid); return -ENOENT; }