From patchwork Tue Jun 23 19:58:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 223381 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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 489E1C433DF for ; Tue, 23 Jun 2020 20:47:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E2BF20781 for ; Tue, 23 Jun 2020 20:47:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592945258; bh=8fU3l5yIMm0+QfOPOLk1KC+nutzhw3BIfXEgK1zhcjA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=b33s07G+Rs8AMjU/ZnEiYFSCysopX+kM/ioFzMeS2uChHJQSi5FHqc2ZA9g1pwYq5 8o2MqaidYzNrKE71KfRLP9ZJbegN8PshnzLBzzkt6+6OtgRTm1w0+u20xaapbdppUM kw3bbA++fBa2qabBQ17ocDPaj0eXw3Z8jXz2srUA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404061AbgFWUrf (ORCPT ); Tue, 23 Jun 2020 16:47:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:46068 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404057AbgFWUre (ORCPT ); Tue, 23 Jun 2020 16:47:34 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A036820781; Tue, 23 Jun 2020 20:47:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592945255; bh=8fU3l5yIMm0+QfOPOLk1KC+nutzhw3BIfXEgK1zhcjA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cEXeKNNpxU4LUZTbnxj1fBrV7sq/+yN4IEnywdX5XhP5xPJ5/Kbsylh+eoffUoKW5 8TVCEETaHDNwuxFym1qjcYAGP5QLww6lnaTWCTT+4R6mkmXXM0YedEucnihmhtiHQ2 aDbOjh9xo4pJQURdzgtfb43YM1xvpto/pjP8Htj0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Maor Gottlieb , Leon Romanovsky , Jason Gunthorpe , Sasha Levin Subject: [PATCH 4.14 069/136] IB/cma: Fix ports memory leak in cma_configfs Date: Tue, 23 Jun 2020 21:58:45 +0200 Message-Id: <20200623195307.152650592@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200623195303.601828702@linuxfoundation.org> References: <20200623195303.601828702@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Maor Gottlieb [ Upstream commit 63a3345c2d42a9b29e1ce2d3a4043689b3995cea ] The allocated ports structure in never freed. The free function should be called by release_cma_ports_group, but the group is never released since we don't remove its default group. Remove default groups when device group is deleted. Fixes: 045959db65c6 ("IB/cma: Add configfs for rdma_cm") Link: https://lore.kernel.org/r/20200521072650.567908-1-leon@kernel.org Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/core/cma_configfs.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/infiniband/core/cma_configfs.c b/drivers/infiniband/core/cma_configfs.c index 54076a3e80076..ac47e8a1dfbf4 100644 --- a/drivers/infiniband/core/cma_configfs.c +++ b/drivers/infiniband/core/cma_configfs.c @@ -319,8 +319,21 @@ fail: return ERR_PTR(err); } +static void drop_cma_dev(struct config_group *cgroup, struct config_item *item) +{ + struct config_group *group = + container_of(item, struct config_group, cg_item); + struct cma_dev_group *cma_dev_group = + container_of(group, struct cma_dev_group, device_group); + + configfs_remove_default_groups(&cma_dev_group->ports_group); + configfs_remove_default_groups(&cma_dev_group->device_group); + config_item_put(item); +} + static struct configfs_group_operations cma_subsys_group_ops = { .make_group = make_cma_dev, + .drop_item = drop_cma_dev, }; static struct config_item_type cma_subsys_type = {