MCA UNCOR error
John Baldwin
jhb at freebsd.org
Mon Feb 13 19:15:11 UTC 2012
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)?
--
John Baldwin
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