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,URIBL_BLOCKED,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 A92C5C7618F for ; Mon, 15 Jul 2019 14:42:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7485F205ED for ; Mon, 15 Jul 2019 14:42:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563201759; bh=pTTi883ZAqvM41jkb31DsGWSQw8kAjR76b/bIzAVJno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KLuKR2yurfArlkjj5u1OHc4umwWt5JLSK+gqMHW0TdogFBF8v7tbG8N0wdhQndmg3 hod+YoATd/aaAjtzQ8jSWK37r4/Sb2NwJc6eITzZxm76a4SIiwaLq3QBDgmb9iUlXO LAYTWC2saZoJSqrl7eshwcf6RYviyBaNxShk4pbE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404311AbfGOOjh (ORCPT ); Mon, 15 Jul 2019 10:39:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:38864 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404243AbfGOOjY (ORCPT ); Mon, 15 Jul 2019 10:39:24 -0400 Received: from sasha-vm.mshome.net (unknown [73.61.17.35]) (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 6AB222184E; Mon, 15 Jul 2019 14:39:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563201563; bh=pTTi883ZAqvM41jkb31DsGWSQw8kAjR76b/bIzAVJno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TDrTRcvs8+NmNUcw5ec6FH0L3qWvbhQG0UaQ6FNxdFMtmJIkr/Q/mYa0VZNpWUUMg xNpc+HnjE9sIr7NvmryNek7cZ4TKJkwlwgGVPQ/sxEyh8NdExZvr+XlaMOfTkSyxRP NpHTiHYzlVREYIP0e+07H9zyFwNYX8Akia6zu5Pg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Pan Bian , Borislav Petkov , Greg Kroah-Hartman , James Morse , Mauro Carvalho Chehab , linux-edac , Sasha Levin Subject: [PATCH AUTOSEL 4.9 43/73] EDAC/sysfs: Fix memory leak when creating a csrow object Date: Mon, 15 Jul 2019 10:35:59 -0400 Message-Id: <20190715143629.10893-43-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190715143629.10893-1-sashal@kernel.org> References: <20190715143629.10893-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pan Bian [ 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 40d792e96b75..203ebe348b77 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -426,6 +426,8 @@ 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; @@ -438,7 +440,11 @@ 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