net: convert netlbl_lsm_cache.refcount from atomic_t to refcount_t
authorReshetova, Elena <elena.reshetova@intel.com>
Fri, 30 Jun 2017 10:08:09 +0000 (13:08 +0300)
committerDavid S. Miller <davem@davemloft.net>
Sat, 1 Jul 2017 14:39:09 +0000 (07:39 -0700)
commitb4217b82893c23f9f45f77914b5aa3b662b75332
tree895da6d6919ceb4425c2392588a9a788baed5adb
parentc122e14df2d64311d1f0c0bbf4d8f42a7a8baf41
net: convert netlbl_lsm_cache.refcount 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: David S. Miller <davem@davemloft.net>
include/net/netlabel.h
net/ipv4/cipso_ipv4.c
net/ipv6/calipso.c