fuse: convert fuse_file.count from atomic_t to refcount_t
authorElena Reshetova <elena.reshetova@intel.com>
Fri, 3 Mar 2017 09:04:03 +0000 (11:04 +0200)
committerMiklos Szeredi <mszeredi@redhat.com>
Tue, 18 Apr 2017 14:58:37 +0000 (16:58 +0200)
commit4e8c2eb54327a6f8b0ef6d6afb28ab24b721dbe0
tree2d5899fded4f7a002cc8ca492fa1742453f946c0
parentc1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201
fuse: convert fuse_file.count 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: Miklos Szeredi <mszeredi@redhat.com>
fs/fuse/file.c
fs/fuse/fuse_i.h