net, ipv6: convert ifacaddr6.aca_refcnt from atomic_t to refcount_t
authorReshetova, Elena <elena.reshetova@intel.com>
Tue, 4 Jul 2017 06:34:58 +0000 (09:34 +0300)
committerDavid S. Miller <davem@davemloft.net>
Tue, 4 Jul 2017 08:29:04 +0000 (01:29 -0700)
commitaffa78bc6a204fac1b5ced4f34376f53c70ec0ac
treecf44a8f3ed84f1eb22d80b8b7689a202eeabd9e6
parentd3981bc615f652b9ead0762dd180125ac2b21a3a
net, ipv6: convert ifacaddr6.aca_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>
include/net/if_inet6.h
net/ipv6/anycast.c