net, vxlan: convert vxlan_sock.refcnt from atomic_t to refcount_t
authorReshetova, Elena <elena.reshetova@intel.com>
Tue, 4 Jul 2017 12:52:59 +0000 (15:52 +0300)
committerDavid S. Miller <davem@davemloft.net>
Tue, 4 Jul 2017 21:35:15 +0000 (22:35 +0100)
commit66af846fe54b780f8f5bd9a62aee081bd2ace582
treed9b9f336bff0491e71d818ee6a3ccfbad9e35b23
parentf00c854c965fd7197c9ac0f59d823ca0a909e33b
net, vxlan: convert vxlan_sock.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.

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>
drivers/net/vxlan.c
include/net/vxlan.h