From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 7301EC433E0 for ; Thu, 18 Jun 2020 01:50:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E2A421D94 for ; Thu, 18 Jun 2020 01:50:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592445005; bh=AU2ypAdhvOt8W49P3pntcXxIhRzmgOcEWKQzI+HrWoc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lxloW6olhkm3QR2qLlb+BFHrSSiV+psU87yxaLefB7zuq/tKys0ghO7jzo+cQ4/Ml 64qQQ1r+Mg9+zvztRm789gS9725dxVLeDjln0Zmes/aFHsZV1HGFgjobpTO5XGt9+s 0mzeQoIqA4u2XJiWC+s3FQwTi+vTo2uCfFjurh44= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730417AbgFRBt7 (ORCPT ); Wed, 17 Jun 2020 21:49:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:35710 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731874AbgFRB1b (ORCPT ); Wed, 17 Jun 2020 21:27:31 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5AEA4221ED; Thu, 18 Jun 2020 01:27:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443651; bh=AU2ypAdhvOt8W49P3pntcXxIhRzmgOcEWKQzI+HrWoc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KtdilklWdBomltDyCu6bJZ9NpbLIUzCu+Kk8SR0k/SSVndL7JuWbK34R8F9CCL7OE 48UQknSYtj8QOopPs1IdOfTFZhciIBqXoklMF2nIHPem0mZcRYfUSEI3x3EF4+G+P/ f6KogGOYQTuusEuLgsoOMiWam/FDp7a28Se54xBk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Maor Gottlieb , Leon Romanovsky , Jason Gunthorpe , Sasha Levin , linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 071/108] IB/cma: Fix ports memory leak in cma_configfs Date: Wed, 17 Jun 2020 21:25:23 -0400 Message-Id: <20200618012600.608744-71-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618012600.608744-1-sashal@kernel.org> References: <20200618012600.608744-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@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 54076a3e8007..ac47e8a1dfbf 100644 --- a/drivers/infiniband/core/cma_configfs.c +++ b/drivers/infiniband/core/cma_configfs.c @@ -319,8 +319,21 @@ static struct config_group *make_cma_dev(struct config_group *group, 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 = { -- 2.25.1