klp_shadow_get_or_alloc
void *klp_shadow_get_or_alloc(void *obj, unsigned long id,
EXPORT_SYMBOL_GPL(klp_shadow_get_or_alloc);
shadow_count = klp_shadow_get_or_alloc(d, SV_COUNTER,
sv = klp_shadow_get_or_alloc(obj, id, size, gfp_flags, ctor, var);