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=-10.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 76822C43441 for ; Mon, 26 Nov 2018 11:02:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3DBB021479 for ; Mon, 26 Nov 2018 11:02:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="YuyuOVGD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3DBB021479 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730424AbeKZV4E (ORCPT ); Mon, 26 Nov 2018 16:56:04 -0500 Received: from mail.kernel.org ([198.145.29.99]:38988 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729237AbeKZV4D (ORCPT ); Mon, 26 Nov 2018 16:56:03 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 A20A22089F; Mon, 26 Nov 2018 11:02:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1543230138; bh=9Bdl5CnzDmnRCu8LZEsBGHe0dwLPfU3GZ2eumisyNdE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YuyuOVGDC2OiNyDKo//TE9kjsaAS3b2ODLxg28OUwDfwpjc6fBcyE1PQNYMph/JQX uY75jGyrG7Bzk2MSJZQq1AYGSUl8SxkO6KeamumqqG/rHGOFQLyz5mSb9plRhj8t4+ E01peDh5D36yyv5ozsdeEiNcShlYHBzKSRgxe97M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chengguang Xu , Al Viro , Sasha Levin Subject: [PATCH 4.19 022/118] fs/exofs: fix potential memory leak in mount option parsing Date: Mon, 26 Nov 2018 11:50:16 +0100 Message-Id: <20181126105100.716827728@linuxfoundation.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181126105059.832485122@linuxfoundation.org> References: <20181126105059.832485122@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 515f1867addaba49c1c6ac73abfaffbc192c1db4 ] There are some cases can cause memory leak when parsing option 'osdname'. Signed-off-by: Chengguang Xu Signed-off-by: Al Viro Signed-off-by: Sasha Levin --- fs/exofs/super.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/exofs/super.c b/fs/exofs/super.c index 41cf2fbee50d..7d61e3fa378c 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -101,6 +101,7 @@ static int parse_options(char *options, struct exofs_mountopt *opts) token = match_token(p, tokens, args); switch (token) { case Opt_name: + kfree(opts->dev_name); opts->dev_name = match_strdup(&args[0]); if (unlikely(!opts->dev_name)) { EXOFS_ERR("Error allocating dev_name"); @@ -866,8 +867,10 @@ static struct dentry *exofs_mount(struct file_system_type *type, int ret; ret = parse_options(data, &opts); - if (ret) + if (ret) { + kfree(opts.dev_name); return ERR_PTR(ret); + } if (!opts.dev_name) opts.dev_name = dev_name; -- 2.17.1