tree 627f9870ad82da8f6f06cca86a73e3b7e2fc97d5
parent 8291798dcf059cdc5e55a59b2c4ad70ae14508c2
author Elena Reshetova <elena.reshetova@intel.com> 1490962848 +0300
committer James Morris <james.l.morris@oracle.com> 1491180545 +1000

security, keys: convert key.usage 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>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>