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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 D2A43C282C0 for ; Wed, 23 Jan 2019 09:28:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A28FD21019 for ; Wed, 23 Jan 2019 09:28:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726999AbfAWJ2j (ORCPT ); Wed, 23 Jan 2019 04:28:39 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:59210 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726229AbfAWJ2i (ORCPT ); Wed, 23 Jan 2019 04:28:38 -0500 Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 2F511E955A46C3247450; Wed, 23 Jan 2019 17:28:37 +0800 (CST) Received: from localhost (10.177.31.96) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.408.0; Wed, 23 Jan 2019 17:28:27 +0800 From: YueHaibing To: , , , , , CC: , , YueHaibing Subject: [PATCH v3 -next] mtd: docg3: Fix a possible memory leak of mtd->name Date: Wed, 23 Jan 2019 17:28:19 +0800 Message-ID: <20190123092819.5020-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.31.96] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In case DOC_CHIPID_G3, mtd->name is not freed in err handling path, which is alloced by kasprintf(). Fix this by using devm_kasprintf(). Fixes: ae9d4934b2d7 ("mtd: docg3: add multiple floor support") Signed-off-by: YueHaibing --- v3: use devm_kasprintf --- drivers/mtd/devices/docg3.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index 4c94fc0..59ca4f5 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -1767,8 +1767,8 @@ static int __init doc_set_driver_info(int chip_id, struct mtd_info *mtd) switch (chip_id) { case DOC_CHIPID_G3: - mtd->name = kasprintf(GFP_KERNEL, "docg3.%d", - docg3->device_id); + mtd->name = devm_kasprintf(docg3->dev, GFP_KERNEL, "docg3.%d", + docg3->device_id); if (!mtd->name) return -ENOMEM; docg3->max_block = 2047; -- 2.7.0