Bug 8517

Summary:	2.6.21 regression - system hang under heavy load with "lapic"
Product:	ACPI	Reporter:	Gregory Krzystek (ninex)
Component:	Power-Thermal	Assignee:	Len Brown (lenb)
Status:	REJECTED INVALID
Severity:	normal	CC:	acpi-bugzilla, Knut_Petersen
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.21	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	dmesg acpidump

Description Gregory Krzystek 2007-05-21 03:45:15 UTC

Most recent kernel where this bug did *NOT* occur: 2.6.20
Distribution: Gentoo 
Problem Description:
when thermal zone is enabled in kernel and module is loaded when system is
overloaded (glibc compilation or other long compilation process) system hangs
Steps to reproduce:
compile glibc on thremal zone enabled kernel

Comment 1 Gregory Krzystek 2007-05-21 03:50:40 UTC

*** Bug 8518 has been marked as a duplicate of this bug. ***

Comment 2 Len Brown 2007-05-23 18:46:56 UTC

What model machine is this?

Did this work properly in all releasese tested before 2.6.21?

Please attach the output from acpidump
Please attach the complete output from dmesg -s64000

Please paste the contents of /proc/acpi/thermal_zone/*/* here

Please monitor the /proc/acpi/thermal_zone/*/temperature
and
/proc/acpi/fan/*/*
and report what you see before the system hangs.
I assume it is rising and the hang occurs at some trip-point
or perhaps a thermal failure.

Is the fan spinning at full speed when the failure occurs?

Comment 3 Gregory Krzystek 2007-05-24 01:11:10 UTC

>What model machine is this?
Laptop MAXDATA ECO 4200X

>Did this work properly in all releasese tested before 2.6.21?
it was work properly with kernels <= 2.6.20

>Please attach the output from acpidump
>Please attach the complete output from dmesg -s64000
>Please paste the contents of /proc/acpi/thermal_zone/*/* here
cooling mode:   active
<polling disabled>
state:                   ok
temperature:             41 C
critical (S5):           100 C
passive:                 92 C: tc1=2 tc2=3 tsp=100 devices=0xedec357c
active[0]:               68 C: devices=0xedece978
active[1]:               61 C: devices=0xedecea68
>Please monitor the /proc/acpi/thermal_zone/*/temperature
>and
>/proc/acpi/fan/*/*
>and report what you see before the system hangs.
>I assume it is rising and the hang occurs at some trip-point
no in kernel 2.6.20 when i compiling glibc cpu temp is 59-72C
on 2.6.21 system hang when temp is ~52-58C
>or perhaps a thermal failure.
>Is the fan spinning at full speed when the failure occurs?
full speed of fan i have when cpu temp is ~70C
on 2.6.21 system hangs before cpu temp is that high.
i will atth all info you need
sorry for my english

Comment 4 Gregory Krzystek 2007-05-24 01:12:00 UTC

Created attachment 11582 [details]
dmesg

full dmesg from 2.6.21

Comment 5 Gregory Krzystek 2007-05-24 01:12:42 UTC

Created attachment 11583 [details]
acpidump

acpidump output

Comment 6 Knut Petersen 2007-08-04 00:52:48 UTC

Try to _enable_ polling:

echo 2 > /proc/acpi/thermal_zone/THRM/polling_frequency

If that does not help, please attach disassembled dsdt.

Comment 7 Len Brown 2007-08-06 18:48:35 UTC

> Kernel command line: root=/dev/hda6 lapic ...

> Local APIC disabled by BIOS -- reenabling.
> Found and enabled local APIC!

Overriding the BIOS in this way is not (and can not be) supported.
Please re-open this bug report if you can reproduce the hang
without "lapic" on the command line.