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Message-Id: <20120215.001122.932491896825562262.nyan@FreeBSD.org>
To: jhb@freebsd.org
From: TAKAHASHI Yoshihiro <nyan@FreeBSD.org>
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	<201202140909.33894.jhb@freebsd.org>
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Cc: current@freebsd.org
Subject: Re: MCA UNCOR error
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In article <201202140909.33894.jhb@freebsd.org>
John Baldwin <jhb@freebsd.org> writes:

>> >> I get the following error and kernel panic on my pc98 at the boot time.
>> >> 
>> >> MCA: Bank 2, Status 0xb600000000140000
>> >> MCA: Global Cap 0x0000000000000005, Status 0x0000000000000004
>> >> MCA: Vendor "GenuineIntel", ID 0x616, APIC ID 0
>> >> MCA: CPU 0 UNCOR PCC no error
>> >> MCA: Address 0x3446ff003446ff
>> >> 
>> >> When I disable MCA with hw.mca.enabled=0 on loader prompt, the machine
>> >> works fine.  Does it mean my pc98 is broken?  Or other isssue?
>> > 
>> > Interesting, that is odd to get an error with no error code.
>> > 
>> > Can you tell from the stack trace if your CPU actually raised a machine check 
>> > exception (trap 28)?
>> 
>> I tested with debugger enabled kernel.
>> Please get from:
>> http://home.jp.freebsd.org/~nyan/mca-error1.jpg
>> http://home.jp.freebsd.org/~nyan/mca-error2.jpg
>> (Sorry for jpeg images)
> 
> Humm.  Try this:

Thanks.  But it still panics.

http://home.jp.freebsd.org/~nyan/mca-error3.jpg
http://home.jp.freebsd.org/~nyan/mca-error4.jpg
http://home.jp.freebsd.org/~nyan/mca-error5.jpg

---
TAKAHASHI Yoshihiro <nyan@FreeBSD.org>