Date: Mon, 27 Jan 2014 22:50:31 -0600 From: Tim Daneliuk <tundra@tundraware.com> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Kernel Geniuses: Need Help With MCA Code Message-ID: <52E73717.3000503@tundraware.com>
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I am running 9.2 stable i386 r261207. As noted earlier:
>I just replaced mobo/CPU on FBSD server (Gigabyte Z-87-D3HP with
>an Intel i3-4130). I am not overclocking ... but I continue to see this sort of thing:
>MCA: CPU 0 COR (1) internal parity error
Dmesg shows:
>MCA: Vendor "GenuineIntel", ID 0x306c3, APIC ID 0
>MCA: CPU 0 COR (1) internal parity error
>MCA: Bank 0, Status 0x90000040000f0005
>MCA: Global Cap 0x0000000000000c07, Status 0x0000000000000000_
I've swapped CPUs (i5). I've fiddled with an endless supply of
mobo settings. I've switched power supplies. I've moved mem
sticks around .... No joy.
So, I dug through the sources and found this:
mca_log(const struct mca_record *rec)
{
uint16_t mca_error;
printf("MCA: Bank %d, Status 0x%016llx\n", rec->mr_bank,
(long long)rec->mr_status);
printf("MCA: Global Cap 0x%016llx, Status 0x%016llx\n",
(long long)rec->mr_mcg_cap, (long long)rec->mr_mcg_status);
printf("MCA: Vendor \"%s\", ID 0x%x, APIC ID %d\n", cpu_vendor,
rec->mr_cpu_id, rec->mr_apic_id);
printf("MCA: CPU %d ", rec->mr_cpu);
if (rec->mr_status & MC_STATUS_UC)
printf("UNCOR ");
else {
printf("COR ");
if (rec->mr_mcg_cap & MCG_CAP_CMCI_P)
printf("(%lld) ", ((long long)rec->mr_status &
MC_STATUS_COR_COUNT) >> 38);
}
It looks like the trailing else clause is kicking out the error but I am
unclear what the error means, beyond the fact that it appears to be a parity
error somewhere within the CPU's internal memory (cache?). Is this error
getting corrected? Is this benign, Should I get a different mobo?
Um .... Haaaaalp :)
--
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Tim Daneliuk tundra@tundraware.com
PGP Key: http://www.tundraware.com/PGP/
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