RE: [Xen-devel] [PATCH 29/29] drivers, xen: convert grant_map.users from atomic_t to refcount_t

[Reshetova, Elena]

> On 03/06/2017 09:21 AM, 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>
> > ---
> >  drivers/xen/gntdev.c | 11 ++++++-----
> >  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

Is there a tree that can take this change? Turns out it is better to propagate changes via separate trees and only leftovers can be taken via Greg's tree.  

Best Regards,
Elena.