From patchwork Wed Nov 16 12:22:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: xiujianfeng X-Patchwork-Id: 1704553 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4NC2Qd36VPz23n4 for ; Wed, 16 Nov 2022 23:28:41 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233374AbiKPM2g (ORCPT ); Wed, 16 Nov 2022 07:28:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233379AbiKPM2T (ORCPT ); Wed, 16 Nov 2022 07:28:19 -0500 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44BA7B31; Wed, 16 Nov 2022 04:25:47 -0800 (PST) Received: from dggpeml500023.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4NC2Ls6pPSzRpG4; Wed, 16 Nov 2022 20:25:25 +0800 (CST) Received: from ubuntu1804.huawei.com (10.67.174.58) by dggpeml500023.china.huawei.com (7.185.36.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 16 Nov 2022 20:25:45 +0800 From: Xiu Jianfeng To: , , , , , CC: , Subject: [PATCH] ksmbd: Fix resource leak in ksmbd_session_rpc_open() Date: Wed, 16 Nov 2022 20:22:37 +0800 Message-ID: <20221116122237.227736-1-xiujianfeng@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.67.174.58] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml500023.china.huawei.com (7.185.36.114) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org When ksmbd_rpc_open() fails then it must call ksmbd_rpc_id_free() to undo the result of ksmbd_ipc_id_alloc(). Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3") Signed-off-by: Xiu Jianfeng Acked-by: Namjae Jeon --- fs/ksmbd/mgmt/user_session.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/ksmbd/mgmt/user_session.c b/fs/ksmbd/mgmt/user_session.c index 3fa2139a0b30..92b1603b5abe 100644 --- a/fs/ksmbd/mgmt/user_session.c +++ b/fs/ksmbd/mgmt/user_session.c @@ -108,15 +108,17 @@ int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name) entry->method = method; entry->id = ksmbd_ipc_id_alloc(); if (entry->id < 0) - goto error; + goto free_entry; resp = ksmbd_rpc_open(sess, entry->id); if (!resp) - goto error; + goto free_id; kvfree(resp); return entry->id; -error: +free_id: + ksmbd_rpc_id_free(entry->id); +free_entry: list_del(&entry->list); kfree(entry); return -EINVAL;