BUILD_EXIT=0
-rwxr-xr-x  1 maxx  maxx  9104 Jul  1 22:17 df0079
-rw-r--r--  1 maxx  maxx  2734 Jul  1 22:17 df0079.c
=== /dev/null & /dev/zero are world-writable (0666) ===
crw-rw-rw-  1 root  wheel   14, 0x00000002 Jul  1 22:17 /dev/null
crw-rw-rw-  1 root  wheel   14, 0x0000000c Jul  1 22:15 /dev/zero
=== vulnerable decl at sys/kern/kern_memio.c:225 (host source) ===
mmrw(cdev_t dev, struct uio *uio, int flags)
{
	int o;
	u_int c;
	u_int poolsize;
	u_long v;
	struct iovec *iov;
	int error = 0;
	caddr_t buf = NULL;

	while (uio->uio_resid > 0 && error == 0) {