BPF_DYNPTR_NR_SLOTS
i += BPF_DYNPTR_NR_SLOTS - 1;
return mark_stack_slot_obj_read(env, reg, spi, BPF_DYNPTR_NR_SLOTS);
return stack_slot_obj_get_spi(env, reg, "dynptr", BPF_DYNPTR_NR_SLOTS);