net: convert inet_peer.refcnt from atomic_t to refcount_t
authorReshetova, Elena <elena.reshetova@intel.com>
Fri, 30 Jun 2017 10:07:54 +0000 (13:07 +0300)
committerDavid S. Miller <davem@davemloft.net>
Sat, 1 Jul 2017 14:39:07 +0000 (07:39 -0700)
commit1cc9a98b59ba92fece1277f76aa43e05f34936a6
treefaaa05ab4da5bd6a3e284759117f036aeb8faabd
parent574a60208794d97ce571db93797f30c36ab38425
net: convert inet_peer.refcnt 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.
This conversion requires overall +1 on the whole
refcounting scheme.

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/inetpeer.h
net/ipv4/inetpeer.c