Re: [PATCH 3/4] sparc: convert mdesc_handle.refcnt from atomic_t to refcount_t

From: David Miller
Date: Mon Feb 20 2017 - 09:57:49 EST

From: Elena Reshetova <elena.reshetova@xxxxxxxxx>
Date: Mon, 20 Feb 2017 13:06:20 +0200

> refcount_t type and corresponding API should be
> used instead of atomic_t when the variable is used as
> a reference counter. This allows to avoid accidental
> refcounter overflows that might lead to use-after-free
> situations.
> Signed-off-by: Elena Reshetova <elena.reshetova@xxxxxxxxx>
> Signed-off-by: Hans Liljestrand <ishkamiel@xxxxxxxxx>
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> Signed-off-by: David Windsor <dwindsor@xxxxxxxxx>

Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>