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Hi,
I got a BSOD due to a Machine Check Exception. The CPU is an i7 4790S.
1: kd> !cpuinfo 0
CP F/M/S Manufacturer MHz PRCB Signature MSR 8B Signature Features
0 6,60,3 GenuineIntel 3192 0000001700000000 21193ffe
Cached Update Signature 0000001700000000
Initial Update Signature 0000001700000000
1: kd> .bugcheck
Bugcheck code 00000124
Arguments 00000000`00000000 fffffa80`1c297028 00000000`fe000000 00000000`00800400
1: kd> !errrec fffffa80`1c297028
===============================================================================
Common Platform Error Record @ fffffa801c297028
-------------------------------------------------------------------------------
Record Id : 01d0fa0fb97d2405
Severity : Fatal (1)
Length : 928
Creator : Microsoft
Notify Type : Machine Check Exception
Timestamp : 9/29/2015 0:21:24
Flags : 0x00000000
===============================================================================
Section 0 : Processor Generic
-------------------------------------------------------------------------------
Descriptor @ fffffa801c2970a8
Section @ fffffa801c297180
Offset : 344
Length : 192
Flags : 0x00000001 Primary
Severity : Fatal
Proc. Type : x86/x64
Instr. Set : x64
Error Type : Micro-Architectural Error
Flags : 0x00
CPU Version : 0x00000000000306c3
Processor ID : 0x0000000000000001
===============================================================================
Section 1 : x86/x64 Processor Specific
-------------------------------------------------------------------------------
Descriptor @ fffffa801c2970f0
Section @ fffffa801c297240
Offset : 536
Length : 128
Flags : 0x00000000
Severity : Fatal
Local APIC Id : 0x0000000000000001
CPU Id : c3 06 03 00 00 08 10 01 - ff fb fa 7f ff fb eb bf
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
Proc. Info 0 @ fffffa801c297240
===============================================================================
Section 2 : x86/x64 MCA
-------------------------------------------------------------------------------
Descriptor @ fffffa801c297138
Section @ fffffa801c2972c0
Offset : 664
Length : 264
Flags : 0x00000000
Severity : Fatal
Error : Internal timer (Proc 1 Bank 4)
Status : 0xfe00000000800400
Address : 0x000007fefcb36ddb
Misc. : 0x000007fefcb36ddb
This 2nd section is most likely the culprit. I have looked for IA32_MCi_STATUS[31:16] = 0080 to figure out what kind of Internal Timer Error occurs, but for this 06_3Ch Family/Model I could not find a Model Specific Error Code.
Can you tell me if there are other models that are compatible with this Haswell Microarchitecture?
The MCA_SECTION contains the following values:
1: kd> dd fffffa801c2972c0 L0n66
fffffa80`1c2972c0 00000001 00000001 c635d67f 01d0fa4c
fffffa80`1c2972d0 00000001 00000005 00000000 00000000
fffffa80`1c2972e0 00000000 00000004 00800400 fe000000
fffffa80`1c2972f0 fcb36ddb 000007fe fcb36ddb 000007fe
fffffa80`1c297300 00000000 00000000 00000000 00000000
fffffa80`1c297310 00000000 00000000 00000000 00000000
fffffa80`1c297320 00000000 00000000 00000000 00000000
fffffa80`1c297330 00000000 00000000 00000000 00000000
fffffa80`1c297340 00000000 00000000 00000000 00000000
fffffa80`1c297350 00000000 00000000 00000000 00000000
fffffa80`1c297360 00000000 00000000 00000000 00000000
fffffa80`1c297370 00000000 00000000 00000000 00000000
fffffa80`1c297380 00000000 00000000 00000000 00000000
fffffa80`1c297390 00000000 00000000 00000000 00000000
fffffa80`1c2973a0 00000000 00000000 00000000 00000000
fffffa80`1c2973b0 00000000 00000000 00000000 00000000
fffffa80`1c2973c0 00000000 00000000
And this is how it is laid down by the compiler:
typedef union _MCG_STATUS {
struct {
ULONG RestartIpValid:1;
ULONG ErrorIpValid:1;
ULONG MachineCheckInProgress:1;
ULONG Reserved1:29;
ULONG Reserved2;
} DUMMYSTRUCTNAME;
ULONGLONG QuadPart;
} MCG_STATUS, *PMCG_STATUS;
typedef union _MCI_STATUS {
struct {
USHORT McaErrorCode;
USHORT ModelErrorCode;
ULONG OtherInformation : 23;
ULONG ActionRequired : 1;
ULONG Signalling : 1;
ULONG ContextCorrupt : 1;
ULONG AddressValid : 1;
ULONG MiscValid : 1;
ULONG ErrorEnabled : 1;
ULONG UncorrectedError : 1;
ULONG StatusOverFlow : 1;
ULONG Valid : 1;
} DUMMYSTRUCTNAME;
ULONG64 QuadPart;
} MCI_STATUS, *PMCI_STATUS;
typedef enum _WHEA_CPU_VENDOR {
WheaCpuVendorOther = 0,
WheaCpuVendorIntel,
WheaCpuVendorAmd
} WHEA_CPU_VENDOR, *PWHEA_CPU_VENDOR;
#define WHEA_XPF_MCA_EXTREG_MAX_COUNT 24
#define WHEA_XPF_MCA_SECTION_VERSION 1
typedef struct _WHEA_XPF_MCA_SECTION {
ULONG VersionNumber;
WHEA_CPU_VENDOR CpuVendor;
LARGE_INTEGER Timestamp;
ULONG ProcessorNumber;
MCG_STATUS GlobalStatus;
ULONGLONG InstructionPointer;
ULONG BankNumber;
MCI_STATUS Status;
ULONGLONG Address;
ULONGLONG Misc;
ULONG ExtendedRegisterCount;
ULONG Reserved2;
ULONGLONG ExtendedRegisters[WHEA_XPF_MCA_EXTREG_MAX_COUNT];
} WHEA_XPF_MCA_SECTION, *PWHEA_XPF_MCA_SECTION;
Regards,
Calin
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Hi Calin,
Support for processors is in communities. You may want to repost here: https://communities.intel.com/community/tech/processors
Regards, Hal
Intel(R) Developer Zone Support
http://software.intel.com
*Other names and brands may be claimed as the property of others.

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