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=-8.6 required=3.0 tests=DATE_IN_PAST_06_12, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 D6CD8C76191 for ; Thu, 25 Jul 2019 05:52:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6069204EC for ; Thu, 25 Jul 2019 05:52:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564033966; bh=2SuPtkwPkO4qr1b97i+rzqWm8BJ7svTIjfYhjq5vB+M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UlEv1cinc72ugWnc5ADqyIPwTxTeyXMi5NrFfMZwQ4PFacQsssjQdlL4X4kwshsEX t/2NAV54gqyiFIn2051/6JRO1e85Bx7xOSd+FLga7YHSINwiEC8kbLTSHPXgY2s20z tNNONHfsnV2q/nWnbBjW4JLve++63R+d5MZiJOv0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404260AbfGYFkD (ORCPT ); Thu, 25 Jul 2019 01:40:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:54352 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404241AbfGYFj7 (ORCPT ); Thu, 25 Jul 2019 01:39:59 -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 B155E22BEF; Thu, 25 Jul 2019 05:39:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564033199; bh=2SuPtkwPkO4qr1b97i+rzqWm8BJ7svTIjfYhjq5vB+M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eFIuo+42wXpqauJqajL3D6jm3weUdM7ZmrZ/2xrlQPqxTksIW4HksC2KTN+vSvDfm 50uuOcVshjxcGAR6MhPPENPDL6z7I8JIPI/jrlfSLikWXLWh6b2cBNUA7f2VuY0mGh GE4V87mGFUCQDsqHmMrjPE61/TlEEYr99elV6qYU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pan Bian , Borislav Petkov , James Morse , Mauro Carvalho Chehab , linux-edac , Sasha Levin Subject: [PATCH 4.19 086/271] EDAC/sysfs: Fix memory leak when creating a csrow object Date: Wed, 24 Jul 2019 21:19:15 +0200 Message-Id: <20190724191702.568005838@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191655.268628197@linuxfoundation.org> References: <20190724191655.268628197@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org [ Upstream commit 585fb3d93d32dbe89e718b85009f9c322cc554cd ] In edac_create_csrow_object(), the reference to the object is not released when adding the device to the device hierarchy fails (device_add()). This may result in a memory leak. Signed-off-by: Pan Bian Signed-off-by: Borislav Petkov Reviewed-by: Greg Kroah-Hartman Cc: James Morse Cc: Mauro Carvalho Chehab Cc: linux-edac Link: https://lkml.kernel.org/r/1555554438-103953-1-git-send-email-bianpan2016@163.com Signed-off-by: Sasha Levin --- drivers/edac/edac_mc_sysfs.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 20374b8248f0..e50610b5bd06 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -404,6 +404,8 @@ static inline int nr_pages_per_csrow(struct csrow_info *csrow) static int edac_create_csrow_object(struct mem_ctl_info *mci, struct csrow_info *csrow, int index) { + int err; + csrow->dev.type = &csrow_attr_type; csrow->dev.bus = mci->bus; csrow->dev.groups = csrow_dev_groups; @@ -416,7 +418,11 @@ static int edac_create_csrow_object(struct mem_ctl_info *mci, edac_dbg(0, "creating (virtual) csrow node %s\n", dev_name(&csrow->dev)); - return device_add(&csrow->dev); + err = device_add(&csrow->dev); + if (err) + put_device(&csrow->dev); + + return err; } /* Create a CSROW object under specifed edac_mc_device */ -- 2.20.1