From: Takayoshi Kochi <kochi@netbsd.org>
Subject: Re: NOTE: ACPI update
Date: Mon, 03 Nov 2003 18:54:02 +0900 (JST)

> When I try envstat -r some times, the kernel will start spiting
> these messages and _BST can never be retrieved.
> 
> |utdelete-0478 [13] UtUpdateRefCount      : **** Warning **** Large Reference Count (CACA) in object 0xc0e6bd28
> |
> |utdelete-0478 [13] UtUpdateRefCount      : **** Warning **** Large Reference Count (CACB) in object 0xc0e6bd28
> |
> |utdelete-0478 [09] UtUpdateRefCount      : **** Warning **** Large Reference Count (CACC) in object 0xc0e6bd28
> |utobject-0558 [04] UtGetSimpleObjectSize : Unsupported type=CA in object 0xc0e6bd28
> |utdelete-0478 [03] UtUpdateRefCount      : **** Warning **** Large Reference Count (CACA) in object 0xc0e6bd28
> |
> |bat: failed to evaluate _BST: 0x8
> 
> This is a known problem since ACPI CA 20030619 and it prevented
> me from updating the ACPI CA tree in NetBSD.
> Clearly the memory was broken by someone.
> 
> I haven't had time to investigate this but Nate Lawson (working
> for FreeBSD) is at least aware of this and maybe someone
> at Intel is also aware.
> 
> I'll check the status of this and back to you later.

Unfortunately, no one has got a clue yet.

---
Takayoshi Kochi