From patchwork Sat Nov 26 04:34:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuan Can X-Patchwork-Id: 13056365 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 288C6C4321E for ; Sat, 26 Nov 2022 04:36:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230084AbiKZEgU (ORCPT ); Fri, 25 Nov 2022 23:36:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230077AbiKZEgT (ORCPT ); Fri, 25 Nov 2022 23:36:19 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE44D3204B for ; Fri, 25 Nov 2022 20:36:17 -0800 (PST) Received: from dggpeml500024.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4NJzNK4fQlzqSd8; Sat, 26 Nov 2022 12:32:17 +0800 (CST) Received: from huawei.com (10.175.112.208) by dggpeml500024.china.huawei.com (7.185.36.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 26 Nov 2022 12:36:15 +0800 From: Yuan Can To: , , , , , , , CC: Subject: [PATCH] RDMA/nldev: Add checks for nla_nest_start() in fill_stat_counter_qps() Date: Sat, 26 Nov 2022 04:34:10 +0000 Message-ID: <20221126043410.85632-1-yuancan@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.175.112.208] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml500024.china.huawei.com (7.185.36.10) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org As the nla_nest_start() may fail with NULL returned, the return value needs to be checked. Fixes: c4ffee7c9bdb ("RDMA/netlink: Implement counter dumpit calback") Signed-off-by: Yuan Can --- drivers/infiniband/core/nldev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 12dc97067ed2..f3309f07e466 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -894,6 +894,8 @@ static int fill_stat_counter_qps(struct sk_buff *msg, int ret = 0; table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP); + if (!table_attr) + return -EMSGSIZE; rt = &counter->device->res[RDMA_RESTRACK_QP]; xa_lock(&rt->xa);