Re: [PATCH] proc: Escape more characters in /proc/mounts output

[Al Viro]

On Tue, Dec 15, 2020 at 09:54:54AM +0530, Siddhesh Poyarekar wrote:

> +	get_user(byte, (const char __user *)data);
> +
> +	return byte ? strndup_user(data, PATH_MAX) : NULL;
>  }

No.  Not to mention anything else, you
	* fetch the same data twice
	* fail to check the get_user() results