tag b95104389d1eba2ece5315c9a709d609bcddee21
tagger Juergen Gross <jgross@suse.com> Fri Mar 17 07:47:15 2017 +0100
object c5f7c5a9a0f84c511a8a336491f9b8a3060b6517

xen: fix for 4.11 rc3

commit c5f7c5a9a0f84c511a8a336491f9b8a3060b6517
author Elena Reshetova <elena.reshetova@intel.com> Mon Mar 06 16:21:16 2017 +0200
committer Boris Ostrovsky <boris.ostrovsky@oracle.com> Mon Mar 13 12:45:18 2017 -0400
tree 8c96894513de6ecef4ca4cd333e1a5840ca94fb7
parent 4495c08e84729385774601b5146d51d9e5849f81

drivers, xen: convert grant_map.users from atomic_t to refcount_t

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@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>