Bug 6151

Summary:	The ASLTS test b129 falls into an infinitive loop in a 32-bit slack mode
Product:	ACPI	Reporter:	Valery A Podrezov (Valery.A.Podrezov)
Component:	ACPICA-Core	Assignee:	Robert Moore (Robert.Moore)
Status:	CLOSED CODE_FIX
Severity:	high	CC:	acpi-bugzilla
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	AML code to reproduce bug (infinite loop) Proposed patch

Description Valery A Podrezov 2006-03-02 07:08:26 UTC

Most recent kernel where this bug did not occur:
Distribution:
Hardware Environment:
Software Environment:
Problem Description:

The Linux kernel ACPI interpreter fails the following
AML test when it is compiled into a simulator. So if an
OEM BIOS includes this code, Linux would fail.

Steps to reproduce:

Run interpreter with the attached b129.aml AML code test of ASLTS.

Comment 1 Valery A Podrezov 2006-03-02 07:26:41 UTC

Created attachment 7497 [details]
AML code to reproduce bug (infinite loop)

AML code of ASLTS test b129 to reproduce bug (infinite loop).

Comment 2 Valery A Podrezov 2006-03-02 07:33:25 UTC

Created attachment 7498 [details]
Proposed patch


The ASLTS testing in a slack mode is blocked because
of this bug - the ACPICA AML Interpreter falls into an
infinitive loop on b129 test attached.

The root cause (similar to 6028) is an invalid
non-zero value of some pointer in FAILURE case.

The patch sets that pointer to NULL in FAILURE case.

INTERNAL BUG NUMBER

   202

Comment 3 Robert Moore 2006-03-10 12:36:30 UTC

Patch integrated into version 20060310

Comment 4 Len Brown 2006-06-25 21:55:35 UTC

ACPICA 20060608 shipped in Linux-2.6.17-git9, closed.