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fs/exofs: fix potential memory leak in mount option parsing
[ Upstream commit 515f1867ad
]
There are some cases can cause memory leak when parsing
option 'osdname'.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -100,6 +100,7 @@ static int parse_options(char *options, struct exofs_mountopt *opts)
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token = match_token(p, tokens, args);
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switch (token) {
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case Opt_name:
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kfree(opts->dev_name);
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opts->dev_name = match_strdup(&args[0]);
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if (unlikely(!opts->dev_name)) {
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EXOFS_ERR("Error allocating dev_name");
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@ -868,8 +869,10 @@ static struct dentry *exofs_mount(struct file_system_type *type,
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int ret;
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ret = parse_options(data, &opts);
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if (ret)
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if (ret) {
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kfree(opts.dev_name);
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return ERR_PTR(ret);
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}
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if (!opts.dev_name)
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opts.dev_name = dev_name;
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