Bug 12649

Summary:	Early crash with 2.6.29-rc3
Product:	ACPI	Reporter:	Rafael J. Wysocki (rjw)
Component:	Config-Other	Assignee:	drivers_pci (drivers_pci)
Status:	CLOSED CODE_FIX
Severity:	normal	CC:	acpi-bugzilla, andrew, ming.m.lin
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.29-rc3	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	12398
Attachments:	Output of acpidump on my laptop

Description Rafael J. Wysocki 2009-02-07 06:33:46 UTC

Subject    : Early crash with 2.6.29-rc3
Submitter  : Andrew McMillan <andrew@morphoss.com>
Date       : 2009-02-04 20:03
References : http://marc.info/?l=linux-kernel&m=123377840816097&w=4
Handled-By : Len Brown <lenb@kernel.org>

This entry is being used for tracking a regression from 2.6.28.  Please don't
close it until the problem is fixed in the mainline.

Comment 1 ykzhao 2009-02-09 17:27:58 UTC

Hi, Andrew
    Will you please attach the output of acpidump?
    Thanks.

Comment 2 Andrew McMillan 2009-02-10 14:59:58 UTC

Created attachment 20186 [details]
Output of acpidump on my laptop

Comment 3 Lin Ming 2009-02-11 18:33:12 UTC

Andrew, 
please help to locate which line code causes the crash.
Build kernel with CONFIG_DEBUG_INFO=y, as below
menuconfig->General Setup->Optimize for size, disable this option
menuconfig->Kernel hacking->Compile the kernel with debug info, enable this option

reboot with this new kernel, then check EIP that causes the crash,
for example, 
EIP: 0060:[<c0441898>] EFLAGS: 00010217 CPU: 1

run addr2line to get the line of code,
addr2line c0441898 -e vmlinux

Comment 4 Andrew McMillan 2009-02-11 23:29:16 UTC

This problem appears to have been resolved in 2.6.29-rc4.  I have now built a kernel 2.6.29-rc4 with exactly the same configuration as earlier and it now boots and runs without this problem.

Comment 5 Zhang Rui 2009-02-12 00:00:26 UTC

good news. close this bug.
please re-open it if it can be reproduced in the upstream kernel again.