net, atm: convert atm_dev.refcnt from atomic_t to refcount_t
authorReshetova, Elena <elena.reshetova@intel.com>
Tue, 4 Jul 2017 12:53:01 +0000 (15:53 +0300)
committerDavid S. Miller <davem@davemloft.net>
Tue, 4 Jul 2017 21:35:16 +0000 (22:35 +0100)
commit458bc30cec26c2716746ae215ed23773257e417d
tree692d00b3c0b0af34c20fdfe31b7a9cf6fa33e3be
parente0542dd5185e68247b08c3418bdba14644b4c414
net, atm: convert atm_dev.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/linux/atmdev.h
net/atm/proc.c
net/atm/resources.c