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=-9.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 12861C43441 for ; Tue, 13 Nov 2018 05:52:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BDE0D2251C for ; Tue, 13 Nov 2018 05:52:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="lAQZNdiC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BDE0D2251C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.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 S1732741AbeKMPsk (ORCPT ); Tue, 13 Nov 2018 10:48:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:35212 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732688AbeKMPsi (ORCPT ); Tue, 13 Nov 2018 10:48:38 -0500 Received: from sasha-vm.mshome.net (unknown [64.114.255.114]) (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 40E422251F; Tue, 13 Nov 2018 05:52:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1542088331; bh=U5tbPCsrfZjD7HmLG4UiMbv/5pTnTm4SutG8xgj0QF0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lAQZNdiCS/trmET5J+Ru1osbubjODgRI6Gp3aCnRrQVDp8bVIk35XJugGOmP3EEHo pleI9v0V8ZGghfRwh5RbSomAbCFKugYFDr2e6lzEZr9lpzFLxS0RFlh+imktg5iA3L k2oMkJXdUW7q5gW2U6+5l9Hpg128y8FPXwStvIm8= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Chengguang Xu , Al Viro , Sasha Levin Subject: [PATCH AUTOSEL 4.14 17/26] fs/exofs: fix potential memory leak in mount option parsing Date: Tue, 13 Nov 2018 00:51:41 -0500 Message-Id: <20181113055150.78773-17-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181113055150.78773-1-sashal@kernel.org> References: <20181113055150.78773-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chengguang Xu [ 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 819624cfc8da..c9ec652e2fcd 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -100,6 +100,7 @@ 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"); @@ -863,8 +864,10 @@ 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