amd64/147963: cpu l2 cache error

[John Baldwin]

On Friday 18 June 2010 6:22:32 am Gabor Illo wrote:
> 
> >Number:         147963
> >Category:       amd64
> >Synopsis:       cpu l2 cache error
> >Confidential:   no
> >Severity:       serious
> >Priority:       medium
> >Responsible:    freebsd-amd64
> >State:          open
> >Quarter:        
> >Keywords:       
> >Date-Required:
> >Class:          sw-bug
> >Submitter-Id:   current-users
> >Arrival-Date:   Fri Jun 18 10:30:02 UTC 2010
> >Closed-Date:
> >Last-Modified:
> >Originator:     Gabor Illo
> >Release:        8.1-PRERELEASE
> >Organization:
> -
> >Environment:
> FreeBSD ns1.stageline.hu 8.1-PRERELEASE FreeBSD 8.1-PRERELEASE #1: Fri Jun  
4 11:47:01 CEST 2010     stageline at ns1.stageline.hu:/usr/obj/usr/src/sys/SAJAT
> >Description:
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
>  cpu2 (AP): APIC ID:  2
>  cpu3 (AP): APIC ID:  3
> cpu0: <ACPI CPU> on acpi0
> cpu1: <ACPI CPU> on acpi0
> cpu2: <ACPI CPU> on acpi0
> cpu3: <ACPI CPU> on acpi0
> est0: <Enhanced SpeedStep Frequency Control> on cpu0
> p4tcc0: <CPU Frequency Thermal Control> on cpu0
> est1: <Enhanced SpeedStep Frequency Control> on cpu1
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc1: <CPU Frequency Thermal Control> on cpu1
> est2: <Enhanced SpeedStep Frequency Control> on cpu2
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc2: <CPU Frequency Thermal Control> on cpu2
> est3: <Enhanced SpeedStep Frequency Control> on cpu3
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc3: <CPU Frequency Thermal Control> on cpu3
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
>  cpu2 (AP): APIC ID:  2
>  cpu3 (AP): APIC ID:  3
> cpu0: <ACPI CPU> on acpi0
> cpu1: <ACPI CPU> on acpi0
> cpu2: <ACPI CPU> on acpi0
> cpu3: <ACPI CPU> on acpi0
> est0: <Enhanced SpeedStep Frequency Control> on cpu0
> p4tcc0: <CPU Frequency Thermal Control> on cpu0
> est1: <Enhanced SpeedStep Frequency Control> on cpu1
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc1: <CPU Frequency Thermal Control> on cpu1
> est2: <Enhanced SpeedStep Frequency Control> on cpu2
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc2: <CPU Frequency Thermal Control> on cpu2
> est3: <Enhanced SpeedStep Frequency Control> on cpu3
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc3: <CPU Frequency Thermal Control> on cpu3
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP/HT): APIC ID:  1
>  cpu2 (AP/HT): APIC ID:  2
>  cpu3 (AP/HT): APIC ID:  3
> cpu0: <ACPI CPU> on acpi0
> cpu1: <ACPI CPU> on acpi0
> cpu2: <ACPI CPU> on acpi0
> cpu3: <ACPI CPU> on acpi0
> est0: <Enhanced SpeedStep Frequency Control> on cpu0
> p4tcc0: <CPU Frequency Thermal Control> on cpu0
> est1: <Enhanced SpeedStep Frequency Control> on cpu1
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc1: <CPU Frequency Thermal Control> on cpu1
> est2: <Enhanced SpeedStep Frequency Control> on cpu2
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc2: <CPU Frequency Thermal Control> on cpu2
> est3: <Enhanced SpeedStep Frequency Control> on cpu3
> est: cpu_vendor GenuineIntel, msr 928092806000928
> p4tcc3: <CPU Frequency Thermal Control> on cpu3
> 
> 
> 
> MCA: Bank 3, Status 0x942000842801010a
> MCA: Global Cap 0x0000000000000806, Status 0x0000000000000000
> MCA: Vendor "GenuineIntel", ID 0x6f7, APIC ID 0
> MCA: CPU 0 COR (2) GCACHE L2 ERR error
> MCA: Address 0x42de00
> MCA: Bank 3, Status 0x902000442920100e
> MCA: Global Cap 0x0000000000000806, Status 0x0000000000000000
> MCA: Vendor "GenuineIntel", ID 0x6f7, APIC ID 0
> MCA: CPU 0 COR (1) L2 memory error
> MCA: Bank 3, Status 0x902000442a20100e
> MCA: Global Cap 0x0000000000000806, Status 0x0000000000000000
> MCA: Vendor "GenuineIntel", ID 0x6f7, APIC ID 0
> MCA: CPU 0 COR (1) L2 memory error
> MCA: Bank 3, Status 0x942000c42b01010a
> MCA: Global Cap 0x0000000000000806, Status 0x0000000000000000
> MCA: Vendor "GenuineIntel", ID 0x6f7, APIC ID 0
> MCA: CPU 0 COR (3) GCACHE L2 ERR error
> MCA: Address 0x22aad300
> MCA: Bank 3, Status 0x902000c42c20100e
> MCA: Global Cap 0x0000000000000806, Status 0x0000000000000000
> MCA: Vendor "GenuineIntel", ID 0x6f7, APIC ID 0
> MCA: CPU 0 COR (3) L2 memory error
> MCA: Bank 3, Status 0x902000842d20100e
> MCA: Global Cap 0x0000000000000806, Status 0x0000000000000000
> MCA: Vendor "GenuineIntel", ID 0x6f7, APIC ID 0
> MCA: CPU 0 COR (2) L2 memory error

You are probably getting correctable memory errors.  You can get spurious 
single-bit errors in modern systems.  If you get any uncorrectable errors or a 
high rate (10's of thousands per hour) of correctable errors, then your RAM 
may be failing.

-- 
John Baldwin