From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 4.14 14/62] fs/exofs: fix potential memory leak in mount option parsing Date: Mon, 26 Nov 2018 11:50:55 +0100 Message-Id: <20181126105052.063766745@linuxfoundation.org> In-Reply-To: <20181126105050.592727680@linuxfoundation.org> References: <20181126105050.592727680@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-ID: 4.14-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 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