net: convert nf_bridge_info.use from atomic_t to refcount_t
authorReshetova, Elena <elena.reshetova@intel.com>
Fri, 30 Jun 2017 10:07:57 +0000 (13:07 +0300)
committerDavid S. Miller <davem@davemloft.net>
Sat, 1 Jul 2017 14:39:07 +0000 (07:39 -0700)
commit53869cebce4bc53f71a080e7830600d4ae1ab712
treec99b8ea34f0b909e5db784b7426e1afcb21aeabf
parent6343944bc1050dcec7c959f484ee0fb6928db3be
net: convert nf_bridge_info.use 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/linux/skbuff.h
include/net/netfilter/br_netfilter.h
net/bridge/br_netfilter_hooks.c