linux-kernel - Re: [boot crash] Re: [tip:x86/mce3] x86, mce: use 64bit machine check code on 32bit

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Date:	Mon, 17 Aug 2009 14:00:20 +0900
From:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	linux-kernel@...r.kernel.org, mingo@...hat.com, hpa@...or.com,
	ak@...ux.intel.com, tglx@...utronix.de,
	Yinghai Lu <yinghai@...nel.org>,
	Huang Ying <ying.huang@...el.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	linux-tip-commits@...r.kernel.org
Subject: Re: [boot crash] Re: [tip:x86/mce3] x86, mce: use 64bit machine check
 code on 32bit

Hi Ingo,

Ingo Molnar wrote:
> * tip-bot for Andi Kleen <ak@...ux.intel.com> wrote:
> 
>> Commit-ID:  4efc0670baf4b14bc95502e54a83ccf639146125
>> Gitweb:     http://git.kernel.org/tip/4efc0670baf4b14bc95502e54a83ccf639146125
>> Author:     Andi Kleen <ak@...ux.intel.com>
>> AuthorDate: Tue, 28 Apr 2009 19:07:31 +0200
>> Committer:  H. Peter Anvin <hpa@...or.com>
>> CommitDate: Thu, 28 May 2009 09:24:13 -0700
>>
>> x86, mce: use 64bit machine check code on 32bit

(snip)

> 
> This commit causes a new regression, it broke the bootup on one of 
> my -tip testsystems, an older, Pentium-M based HP laptop (HP 
> OmniBook 6000 EA).
> 
> The symptom is that the bootup hard-hangs after MCE init:
> 
>  [    0.022996] Mount-cache hash table entries: 512
>  [    0.024996] Initializing cgroup subsys debug
>  [    0.025996] Initializing cgroup subsys cpuacct
>  [    0.026995] Initializing cgroup subsys devices
>  [    0.027995] Initializing cgroup subsys freezer
>  [    0.028995] mce: CPU supports 5 MCE banks
> 
> Kernel config attached. cpuinfo:
> 
> processor	: 0
> vendor_id	: GenuineIntel
> cpu family	: 6
> model		: 8
> model name	: 06/08
> stepping	: 10
> cpu MHz		: 846.372

According to the cpuid, I suppose this cpu is Pentium III.

> fdiv_bug	: no
> hlt_bug		: no
> f00f_bug	: no
> coma_bug	: no
> fpu		: yes
> fpu_exception	: yes
> cpuid level	: 2
> wp		: yes
> flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse up

None of acpi, apic, and tm is available.
So at least thermal codes should be innocent.

> bogomips	: 1692.74
> clflush size	: 32
> power management:
> 
> 	Ingo

Could you try boot your laptop with mce=nobootlog?


Thanks,
H.Seto

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