Re: [PATCH] kernel: convert css_set.refcount from atomic_t to refcount_t

From: Tejun Heo
Date: Wed Mar 08 2017 - 17:54:21 EST


On Wed, Mar 08, 2017 at 10:00:40AM +0200, Elena Reshetova wrote:
> 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>

Applied to cgroup/for-4.12.

Thanks.

--
tejun