From patchwork Mon Aug 17 15:09:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265897 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=-12.8 required=3.0 tests=BAYES_00,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=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 79594C433E1 for ; Mon, 17 Aug 2020 19:51:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4194820658 for ; Mon, 17 Aug 2020 19:51:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597693893; bh=U+gWfkrY3BsVuOe18g1jlpr8DJgrJunvSINNKdy/Hcs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sv4cOyPqQj2+aQwEuBpuKNfzfttx2eEFhM5DmUnPbAG201+8XVpnw1n4ZqVAXdsim WWB3EfTuNtrkjQz3ky2vJkcn5x1/3zXHbG1hYnfq+ECWChkk7KCjR5AGvU+myTlljY NUh8DOPIPHBEfnq/+Hn9ykSuINJlVthNZcg1045w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729203AbgHQTvO (ORCPT ); Mon, 17 Aug 2020 15:51:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:40372 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729194AbgHQPSw (ORCPT ); Mon, 17 Aug 2020 11:18:52 -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 5968B206FA; Mon, 17 Aug 2020 15:18:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597677531; bh=U+gWfkrY3BsVuOe18g1jlpr8DJgrJunvSINNKdy/Hcs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=USt9A+jvJrvxS48wpOu0IaX/a0+2yvtoL5mRgNxMsbxehh1L0oZl1zlCzK5VvVudE zYF86UmsF2dC0BCYUuMAC4TXRxJSSDvOk9ThZsPekyaOFaUgMhD+I4FuqhObJNEufl /zh1qHL8kvV1tB2O4Rf0Mz9ReOkCXjDILSb945io= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Qiushi Wu , Borislav Petkov , Sasha Levin Subject: [PATCH 5.8 017/464] EDAC: Fix reference count leaks Date: Mon, 17 Aug 2020 17:09:30 +0200 Message-Id: <20200817143834.582963824@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143833.737102804@linuxfoundation.org> References: <20200817143833.737102804@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: Qiushi Wu [ Upstream commit 17ed808ad243192fb923e4e653c1338d3ba06207 ] When kobject_init_and_add() returns an error, it should be handled because kobject_init_and_add() takes a reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Therefore, replace calling kfree() and call kobject_put() and add a missing kobject_put() in the edac_device_register_sysfs_main_kobj() error path. [ bp: Massage and merge into a single patch. ] Fixes: b2ed215a3338 ("Kobject: change drivers/edac to use kobject_init_and_add") Signed-off-by: Qiushi Wu Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200528202238.18078-1-wu000273@umn.edu Link: https://lkml.kernel.org/r/20200528203526.20908-1-wu000273@umn.edu Signed-off-by: Sasha Levin --- drivers/edac/edac_device_sysfs.c | 1 + drivers/edac/edac_pci_sysfs.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c index 0e7ea3591b781..5e75937537997 100644 --- a/drivers/edac/edac_device_sysfs.c +++ b/drivers/edac/edac_device_sysfs.c @@ -275,6 +275,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev) /* Error exit stack */ err_kobj_reg: + kobject_put(&edac_dev->kobj); module_put(edac_dev->owner); err_out: diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c index 72c9eb9fdffbe..53042af7262e2 100644 --- a/drivers/edac/edac_pci_sysfs.c +++ b/drivers/edac/edac_pci_sysfs.c @@ -386,7 +386,7 @@ static int edac_pci_main_kobj_setup(void) /* Error unwind statck */ kobject_init_and_add_fail: - kfree(edac_pci_top_main_kobj); + kobject_put(edac_pci_top_main_kobj); kzalloc_fail: module_put(THIS_MODULE);