Date: Tue, 14 Feb 2012 14:49:40 -0500 From: John Baldwin <jhb@freebsd.org> To: TAKAHASHI Yoshihiro <nyan@freebsd.org> Cc: current@freebsd.org Subject: Re: MCA UNCOR error Message-ID: <201202141449.40555.jhb@freebsd.org> In-Reply-To: <20120215.001122.932491896825562262.nyan@FreeBSD.org> References: <201202131308.48171.jhb@freebsd.org> <201202140909.33894.jhb@freebsd.org> <20120215.001122.932491896825562262.nyan@FreeBSD.org>
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On Tuesday, February 14, 2012 10:11:22 am TAKAHASHI Yoshihiro wrote: > 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 Ah great, you can maybe test another patch I have. Try this in addition to the earlier patch: http://www.freebsd.org/~jhb/patches/mca_alloc.patch -- John Baldwin
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