4.9-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 515f1867addaba49c1c6ac73abfaffbc192c1db4 ]
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 --- 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 1076a4233b39..0c48138486dc 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"); @@ -868,8 +869,10 @@ 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;