Re: [PATCH] exfat: fix memory leak in exfat_parse_param()

[Al Viro]

On Wed, Jun 03, 2020 at 10:29:57AM +0900, Namjae Jeon wrote:

> exfat_free() should call exfat_free_iocharset() after stealing
> param->string instead of kstrdup in exfat_parse_param().

ITYM
	extfat_free() should call exfat_free_iocharset(), to prevent
a leak in case we fail after parsing iocharset= but before calling
get_tree_bdev()

	Additionally, there's no point copying param->string in
exfat_parse_param() - just steal it, leaving NULL in param->string.
That's independent from the leak or fix thereof - it's simply
avoiding an extra copy.