Date: Tue, 14 Feb 2012 21:57:50 +0900 (JST) From: TAKAHASHI Yoshihiro <nyan@FreeBSD.org> To: jhb@freebsd.org Cc: current@freebsd.org Subject: Re: MCA UNCOR error Message-ID: <20120214.215750.343708041257791038.nyan@FreeBSD.org> In-Reply-To: <201202131308.48171.jhb@freebsd.org> References: <20120212.185549.343708041257811633.nyan@FreeBSD.org> <201202131308.48171.jhb@freebsd.org>
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In article <201202131308.48171.jhb@freebsd.org> John Baldwin <jhb@freebsd.org> writes: > On Sunday, February 12, 2012 4:55:49 am TAKAHASHI Yoshihiro wrote: >> 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? >> >> It's spec is: >> >> FreeBSD 10.0-CURRENT #5: Thu Feb 9 13:18:22 UTC 2012 >> CPU: Pentium Pro (198.95-MHz 686-class CPU) >> Origin = "GenuineIntel" Id = 0x616 Family = 6 Model = 1 Stepping = 6 >> Features=0xf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV> >> real memory = 134217728 (128 MB) >> avail memory = 120471552 (114 MB) > > 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) --- TAKAHASHI Yoshihiro <nyan@FreeBSD.org>
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