Re: [PATCH] misc: hpilo: Fix use-after-free in ilo_open

[Greg KH]

On Sat, Dec 31, 2022 at 02:53:10PM +0900, Yoochan Lee wrote:
> --- a/drivers/misc/hpilo.h
> +++ b/drivers/misc/hpilo.h
> @@ -62,6 +62,7 @@ struct ilo_hwinfo {
>  	spinlock_t fifo_lock;
>  
>  	struct cdev cdev;
> +	struct kref refcnt;

This is obviously incorrect, please never have 2 reference counts for
the same structure.

greg k-h