port-i386/44408: More interrupt/locking errors in ACPI suspend

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

>Number:         44408
>Category:       port-i386
>Synopsis:       More interrupt/locking errors in ACPI suspend
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 18 13:05:00 +0000 2011
>Originator:     Jukka Ruohonen
>Release:        NetBSD 5.99.43
>Organization:
-
>Environment:

amd64

>Description:

During suspend:

...

acpi0: entering state S3
Flushing disk caches: done
ACPI Error: Mutex [0x0] is not acquired, cannot release (20100528/utmutex-422)
ACPI Error: Could not release AML Interpreter mutex (20100528/exutils-249)
 hwsleep-0399 [13328] EnterSleepState       : Entering sleep state [S3]
ioapic0 reenabling

...

This appers not to be fatal (i.e. the system still suspends and resumes),
but failure to acquire the interpreter mutex is a serious bug that may cause
other problems ("works by chance"). Could be a bug in ACPICA.

>How-To-Repeat:

Suspend and resume.

>Fix:

Under investigation.

>Unformatted: