leaky_zalloc
new_state = leaky_zalloc(
nlkb = leaky_zalloc(LEAK_BUFCTL_SIZE(depth), UM_SLEEP);
lk_mtab = leaky_zalloc(est * sizeof (leak_mtab_t), UM_SLEEP | UM_GC);
lk_scan_buffer = leaky_zalloc(LK_SCAN_BUFFER_SIZE, UM_SLEEP | UM_GC);