From patchwork Thu Sep 16 15:57:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 513776 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 130CFC28CAE for ; Thu, 16 Sep 2021 17:14:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 09EBC60F70 for ; Thu, 16 Sep 2021 17:14:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351404AbhIPRPg (ORCPT ); Thu, 16 Sep 2021 13:15:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:39748 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350661AbhIPRLy (ORCPT ); Thu, 16 Sep 2021 13:11:54 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 87497619E8; Thu, 16 Sep 2021 16:38:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631810282; bh=DRQhfn7N1YUU+lNFrA1dYMbzRU+euNsQlv058abfMY4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1LFmlgT3c9ab/1UxprPE/9iHDeluNj2+i7D59++Rh5IvU9z8LCY97Z418ROETTtnF SJ2uWYshdBvfYQT9t6VvUl+Ole6MNIDPlrDMZKBj687NYnlqBk4afX33ExV8Q+qU90 kd5HS+jMGbVweK5ezksFYHcvdWWfpD6R9g3nv1Xw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Leon Romanovsky , Jason Gunthorpe , Sasha Levin Subject: [PATCH 5.14 083/432] RDMA/iwcm: Release resources if iw_cm module initialization fails Date: Thu, 16 Sep 2021 17:57:12 +0200 Message-Id: <20210916155813.596889788@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210916155810.813340753@linuxfoundation.org> References: <20210916155810.813340753@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Leon Romanovsky [ Upstream commit e677b72a0647249370f2635862bf0241c86f66ad ] The failure during iw_cm module initialization partially left the system with unreleased memory and other resources. Rewrite the module init/exit routines in such way that netlink commands will be opened only after successful initialization. Fixes: b493d91d333e ("iwcm: common code for port mapper") Link: https://lore.kernel.org/r/b01239f99cb1a3e6d2b0694c242d89e6410bcd93.1627048781.git.leonro@nvidia.com Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/core/iwcm.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c index 42261152b489..2b47073c61a6 100644 --- a/drivers/infiniband/core/iwcm.c +++ b/drivers/infiniband/core/iwcm.c @@ -1186,29 +1186,34 @@ static int __init iw_cm_init(void) ret = iwpm_init(RDMA_NL_IWCM); if (ret) - pr_err("iw_cm: couldn't init iwpm\n"); - else - rdma_nl_register(RDMA_NL_IWCM, iwcm_nl_cb_table); + return ret; + iwcm_wq = alloc_ordered_workqueue("iw_cm_wq", 0); if (!iwcm_wq) - return -ENOMEM; + goto err_alloc; iwcm_ctl_table_hdr = register_net_sysctl(&init_net, "net/iw_cm", iwcm_ctl_table); if (!iwcm_ctl_table_hdr) { pr_err("iw_cm: couldn't register sysctl paths\n"); - destroy_workqueue(iwcm_wq); - return -ENOMEM; + goto err_sysctl; } + rdma_nl_register(RDMA_NL_IWCM, iwcm_nl_cb_table); return 0; + +err_sysctl: + destroy_workqueue(iwcm_wq); +err_alloc: + iwpm_exit(RDMA_NL_IWCM); + return -ENOMEM; } static void __exit iw_cm_cleanup(void) { + rdma_nl_unregister(RDMA_NL_IWCM); unregister_net_sysctl_table(iwcm_ctl_table_hdr); destroy_workqueue(iwcm_wq); - rdma_nl_unregister(RDMA_NL_IWCM); iwpm_exit(RDMA_NL_IWCM); }