drivers, char: convert vma_data.refcnt from atomic_t to refcount_t
authorElena Reshetova <elena.reshetova@intel.com>
Mon, 6 Mar 2017 14:20:50 +0000 (16:20 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 23 Mar 2017 12:57:19 +0000 (13:57 +0100)
commitf7d88d24c5a2b66b02770e2776fce72b5fd70193
tree97b3f2f75da7998195f1344a2438fc3079ca57a5
parent132c93d4215c5ea12f8bb291249ede159d507b6e
drivers, char: convert vma_data.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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/char/mspec.c