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My MBP just had a Kernel Panic...

daneoni

daneoni

macrumors G5
Original poster
Mar 24, 2006
12,041
1,959
...can someone please help me decode the log so i know what caused it. Thanks in advance.

Code: 
Interval Since Last Panic Report:  374224 sec
Panics Since Last Report:          1

Mon Apr  8 17:12:53 2013
Machine-check capabilities 0x0000000000000c09:
 family: 6 model: 42 stepping: 7 microcode: 26
 Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz
 9 error-reporting banks
 threshold-based error status present
 extended corrected memory error handling present
Processor 0: no valid machine-check state
Processor 1: no valid machine-check state
Processor 2: no valid machine-check state
Processor 3: no valid machine-check state
Processor 4: no valid machine-check state
Processor 5: no valid machine-check state
Processor 6: machine-check status 0x0000000000000004:
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003f7faf00baf2
 IA32_MC3_MISC(0x40f): 0x000000000003ffff
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 Package 0 logged:
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 7: machine-check status 0x0000000000000005:
 restart IP valid
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003f7faf00baf2
 IA32_MC3_MISC(0x40f): 0x000000000003ffff
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
panic(cpu 0 caller 0xffffff802dab8719): "Machine Check at 0xffffff802dabdab2, registers:\n" "CR0: 0x000000008001003b, CR2: 0x0000000109cce000, CR3: 0x0000000030490000, CR4: 0x00000000000606e0\n" "RAX: 0x0000000000000000, RBX: 0x0000000000000012, RCX: 0x0000000000000000, RDX: 0x000000000000006f\n" "RSP: 0xffffff81ff0a3c70, RBP: 0xffffff81ff0a3c80, RSI: 0x0000000000000002, RDI: 0x0000000000000120\n" "R8:  0x0000000000000000, R9:  0x7ffffffffffffffe, R10: 0x00000000ffffffff, R11: 0x00000000ffffff80\n" "R12: 0x7fffffffffffffff, R13: 0xffffff804f3c4800, R14: 0x0000006f8380bd2f, R15: 0x7fffffffffffffff\n" "RFL: 0x0000000000000002, RIP: 0xffffff802dabdab2, CS:  0x0000000000000008, SS:  0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2050.24.6/osfmk/i386/trap_native.c:280
Backtrace (CPU 0), Frame : Return Address
0xffffff802d90bd20 : 0xffffff802da1d626 
0xffffff802d90bd90 : 0xffffff802dab8719 
0xffffff802d90bf00 : 0xffffff802dacddbf 
0xffffff81ff0a3c80 : 0xffffff7faf561358 
0xffffff81ff0a3cb0 : 0xffffff7faf56142f 
0xffffff81ff0a3cf0 : 0xffffff7faf55ae52 
0xffffff81ff0a3dd0 : 0xffffff7faf559872 
0xffffff81ff0a3e80 : 0xffffff802dab8feb 
0xffffff81ff0a3ea0 : 0xffffff802da2f1c3 
0xffffff81ff0a3ee0 : 0xffffff802da2dc81 
0xffffff81ff0a3f40 : 0xffffff802da2d9f3 
0xffffff81ff0a3f80 : 0xffffff802de453dd 
0xffffff81ff0a3fb0 : 0xffffff802dab2987 
      Kernel Extensions in backtrace:
         com.apple.driver.AppleIntelCPUPowerManagement(196.0)[EDE188A8-D142-3689-B2F0-26AB424A4CAF]@0xffffff7faf558000->0xffffff7faf580fff

BSD process name corresponding to current thread: kernel_task
Boot args: iog=0x0

Mac OS version:
12D78

Kernel version:
Darwin Kernel Version 12.4.0: Sun Mar 10 18:01:10 PDT 2013; root:xnu-2050.24.6~1/RELEASE_X86_64
Kernel UUID: 95F6AE61-84F1-3B76-9A4B-A6BF9DDCD02D
Kernel slide:     0x000000002d800000
Kernel text base: 0xffffff802da00000
System model name: MacBookPro8,2 (Mac-94245A3940C91C80)

System uptime in nanoseconds: 507962437990
last loaded kext at 7213151985: com.apple.driver.AppleHWSensor	1.9.5d0 (addr 0xffffff7faf584000, size 36864)
loaded kexts:
com.apple.driver.AppleHWSensor	1.9.5d0
com.apple.driver.AudioAUUC	1.60
com.apple.filesystems.autofs	3.0
com.apple.iokit.IOBluetoothSerialManager	4.1.4f1
com.apple.driver.AppleHDAHardwareConfigDriver	2.3.7fc4
com.apple.driver.AGPM	100.12.87
com.apple.driver.AppleTyMCEDriver	1.0.2d2
com.apple.driver.AppleMikeyHIDDriver	122
com.apple.kext.AMDFramebuffer	8.1.2
com.apple.driver.AppleHDA	2.3.7fc4
com.apple.driver.AppleUpstreamUserClient	3.5.10
com.apple.iokit.IOBluetoothUSBDFU	4.1.4f1
com.apple.driver.AppleUSBDisplays	357
com.apple.AMDRadeonAccelerator	1.0.8
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport	4.1.4f1
com.apple.iokit.IOUserEthernet	1.0.0d1
com.apple.Dont_Steal_Mac_OS_X	7.0.0
com.apple.driver.ApplePolicyControl	3.4.1
com.apple.driver.AppleSMCPDRC	1.0.0
com.apple.driver.SMCMotionSensor	3.0.3d1
com.apple.driver.AppleSMCLMU	2.0.3d0
com.apple.driver.AppleMikeyDriver	2.3.7fc4
com.apple.driver.ACPI_SMC_PlatformPlugin	1.0.0
com.apple.driver.AppleIntelHD3000Graphics	8.1.2
com.apple.driver.AppleIntelSNBGraphicsFB	8.1.2
com.apple.driver.AppleBacklight	170.2.5
com.apple.driver.AppleMCCSControl	1.1.11
com.apple.driver.AppleLPC	1.6.0
com.apple.driver.AppleMuxControl	3.4.1
com.apple.driver.AppleUSBTCButtons	237.1
com.apple.driver.AppleUSBTCKeyEventDriver	237.1
com.apple.driver.AppleUSBTCKeyboard	237.1
com.apple.driver.AppleIRController	320.15
com.apple.iokit.SCSITaskUserClient	3.5.5
com.apple.driver.XsanFilter	404
com.apple.iokit.IOAHCIBlockStorage	2.3.1
com.apple.driver.AppleFileSystemDriver	3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless	1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib	1.0.0d1
com.apple.BootCache	34
com.apple.driver.AppleUSBHub	5.5.5
com.apple.driver.AppleSDXC	1.4.2
com.apple.iokit.AppleBCM5701Ethernet	3.6.1b2
com.apple.driver.AppleFWOHCI	4.9.6
com.apple.driver.AirPort.Brcm4331	615.20.17
com.apple.driver.AppleAHCIPort	2.5.1
com.apple.driver.AppleUSBUHCI	5.2.5
com.apple.driver.AppleUSBEHCI	5.5.0
com.apple.driver.AppleEFINVRAM	1.7
com.apple.driver.AppleSmartBatteryManager	161.0.0
com.apple.driver.AppleACPIButtons	1.7
com.apple.driver.AppleRTC	1.5
com.apple.driver.AppleHPET	1.8
com.apple.driver.AppleSMBIOS	1.9
com.apple.driver.AppleACPIEC	1.7
com.apple.driver.AppleAPIC	1.6
com.apple.driver.AppleIntelCPUPowerManagementClient	196.0.0
com.apple.nke.applicationfirewall	4.0.39
com.apple.security.quarantine	2
com.apple.driver.AppleIntelCPUPowerManagement	196.0.0
com.apple.driver.AppleHIDKeyboard	170.2
com.apple.driver.IOBluetoothHIDDriver	4.1.4f1
com.apple.kext.triggers	1.0
com.apple.iokit.IOSerialFamily	10.0.6
com.apple.driver.DspFuncLib	2.3.7fc4
com.apple.iokit.IOAcceleratorFamily	74.1.1
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport	4.1.4f1
com.apple.iokit.IOSurface	86.0.4
com.apple.iokit.IOFireWireIP	2.2.5
com.apple.driver.AppleUSBAudio	2.9.0f8
com.apple.iokit.IOAudioFamily	1.8.9fc11
com.apple.kext.OSvKernDSPLib	1.6
com.apple.kext.AMD6000Controller	8.1.2
com.apple.kext.AMDSupport	8.1.2
com.apple.iokit.IOBluetoothFamily	4.1.4f1
com.apple.driver.AppleThunderboltEDMSink	1.1.8
com.apple.driver.AppleThunderboltEDMSource	1.1.8
com.apple.driver.AppleThunderboltDPOutAdapter	1.8.9
com.apple.driver.AppleSMBusPCI	1.0.11d0
com.apple.driver.IOPlatformPluginLegacy	1.0.0
com.apple.driver.AppleSMC	3.1.4d2
com.apple.driver.AppleSMBusController	1.0.11d0
com.apple.driver.IOPlatformPluginFamily	5.3.0d51
com.apple.driver.AppleHDAController	2.3.7fc4
com.apple.iokit.IOHDAFamily	2.3.7fc4
com.apple.driver.AppleGraphicsControl	3.4.1
com.apple.driver.AppleBacklightExpert	1.0.4
com.apple.iokit.IONDRVSupport	2.3.7
com.apple.iokit.IOGraphicsFamily	2.3.7
com.apple.driver.AppleThunderboltDPInAdapter	1.8.9
com.apple.driver.AppleThunderboltDPAdapterFamily	1.8.9
com.apple.driver.AppleThunderboltPCIDownAdapter	1.2.6
com.apple.driver.AppleUSBMultitouch	237.3
com.apple.iokit.IOUSBHIDDriver	5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice	3.5.5
com.apple.iokit.IOBDStorageFamily	1.7
com.apple.iokit.IODVDStorageFamily	1.7.1
com.apple.iokit.IOCDStorageFamily	1.7.1
com.apple.driver.AppleUSBMergeNub	5.5.5
com.apple.driver.AppleUSBComposite	5.2.5
com.apple.iokit.IOAHCISerialATAPI	2.5.1
com.apple.iokit.IOSCSIArchitectureModelFamily	3.5.5
com.apple.driver.AppleThunderboltNHI	1.6.3
com.apple.iokit.IOThunderboltFamily	2.2.8
com.apple.iokit.IOUSBUserClient	5.5.5
com.apple.iokit.IOEthernetAVBController	1.0.2b1
com.apple.iokit.IOFireWireFamily	4.5.5
com.apple.iokit.IO80211Family	530.4
com.apple.iokit.IONetworkingFamily	3.0
com.apple.iokit.IOAHCIFamily	2.3.1
com.apple.iokit.IOUSBFamily	5.6.0
com.apple.driver.AppleEFIRuntime	1.7
com.apple.iokit.IOHIDFamily	1.8.1
com.apple.iokit.IOSMBusFamily	1.1
com.apple.security.sandbox	220.2
com.apple.kext.AppleMatch	1.0.0d1
com.apple.security.TMSafetyNet	7
com.apple.driver.DiskImages	345
com.apple.iokit.IOStorageFamily	1.8
com.apple.driver.AppleKeyStore	28.21
com.apple.driver.AppleACPIPlatform	1.7
com.apple.iokit.IOPCIFamily	2.7.3
com.apple.iokit.IOACPIFamily	1.4
com.apple.kec.corecrypto	1.0
System Profile:
Model: MacBookPro8,2, BootROM MBP81.0047.B27, 4 processors, Intel Core i7, 2.2 GHz, 16 GB, SMC 1.69f4
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 512 MB
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.4f1 11664, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: M4-CT256M4SSD2, 256.06 GB
Serial ATA Device: MAT****ADVD-R   UJ-8A8
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0xfa100000 / 3
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0246, 0xfa120000 / 5
USB Device: BRCM2070 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821a, 0xfa113000 / 7
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0xfa200000 / 2
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0xfd100000 / 2
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd110000 / 3
 
Last edited:
It's either memory or CPU. When dumps show corruption such as yours, the corruption is usually caused by faulty CPU or RAM (or both).

Boot into AHT and run the full test option. (Hold D key down while powering system on to boot into AHT.)
 
I did upgrade RAM recently but that was about 4 months ago and i never had issues till today.

Hmm...

Got another one shortly after the first one...

Code: 
Interval Since Last Panic Report:  721 sec
Panics Since Last Report:          1

Mon Apr  8 18:05:10 2013
Machine-check capabilities 0x0000000000000c09:
 family: 6 model: 42 stepping: 7 microcode: 26
 Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz
 9 error-reporting banks
 threshold-based error status present
 extended corrected memory error handling present
Processor 0: machine-check status 0x0000000000000004:
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003f7fa8f84114
 IA32_MC3_MISC(0x40f): 0x000000000003ffff
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 1: machine-check status 0x0000000000000005:
 restart IP valid
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003f7fa8f84114
 IA32_MC3_MISC(0x40f): 0x000000000003ffff
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 2: machine-check status 0x0000000000000004:
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003fff98b0794b
 IA32_MC3_MISC(0x40f): 0x0000000000000001
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 3: machine-check status 0x0000000000000005:
 restart IP valid
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003fff98b0794b
 IA32_MC3_MISC(0x40f): 0x0000000000000001
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 4: machine-check status 0x0000000000000004:
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003f7fa8f8fbd8
 IA32_MC3_MISC(0x40f): 0x000000000003ffff
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 5: machine-check status 0x0000000000000005:
 restart IP valid
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x00003f7fa8f8fbd8
 IA32_MC3_MISC(0x40f): 0x000000000003ffff
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 Package 0 logged:
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 6: machine-check status 0x0000000000000005:
 restart IP valid
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x0000000005065469
 IA32_MC3_MISC(0x40f): 0x0000000000000000
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 7: machine-check status 0x0000000000000004:
 machine-check in progress
MCA error-reporting registers:
 IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
 IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
 IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
 IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
  MCA error code:            0x0400
  Model specific error code: 0x0080
  Other information:         0x00000000
  Threshold-based status:    Undefined
  Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
 IA32_MC3_ADDR(0x40e): 0x0000000005065469
 IA32_MC3_MISC(0x40f): 0x0000000000000000
 IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
 IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
 IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
 IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
 IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
panic(cpu 4 caller 0xffffff80286b8719): "Machine Check at 0xffffff7fa8f8fbd8, registers:\n" "CR0: 0x0000000080010033, CR2: 0x000000010991a000, CR3: 0x00000000596e5041, CR4: 0x00000000000606e0\n" "RAX: 0xffffff8049f1d000, RBX: 0xffffff804aec9000, RCX: 0xffffff81f9065820, RDX: 0xffffff81f9a70010\n" "RSP: 0xffffff81f99d3d80, RBP: 0xffffff81f99d3d90, RSI: 0xffffff7fa9e82458, RDI: 0xffffff8049f1d000\n" "R8:  0x0000000000000080, R9:  0xffffff804aec90b0, R10: 0xffffff7fa98c5fa0, R11: 0x0000000000000202\n" "R12: 0x0000000000000000, R13: 0xffffff804aec9000, R14: 0x0000000000000080, R15: 0xffffff81f9a70010\n" "RFL: 0x0000000000010286, RIP: 0xffffff7fa8f8fbd8, CS:  0x0000000000000008, SS:  0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2050.24.6/osfmk/i386/trap_native.c:280
Backtrace (CPU 4), Frame : Return Address
0xffffff81ef795ec0 : 0xffffff802861d626 
0xffffff81ef795f30 :
System Profile:
Model: MacBookPro8,2, BootROM MBP81.0047.B27, 4 processors, Intel Core i7, 2.2 GHz, 16 GB, SMC 1.69f4
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 512 MB
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.4f1 11664, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: M4-CT256M4SSD2, 256.06 GB
Serial ATA Device: MAT****ADVD-R   UJ-8A8
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0xfa100000 / 3
USB Device: BRCM2070 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0xfa110000 / 5
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821a, 0xfa113000 / 7
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0246, 0xfa120000 / 4
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0xfa200000 / 2
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0xfd100000 / 2
USB Device: hub_device, apple_vendor_id, 0x9126, 0xfd120000 / 4
USB Device: USB RECEIVER, 0x046d  (Logitech Inc.), 0xc50e, 0xfd122000 / 8
USB Device: Apple LED Cinema Display, apple_vendor_id, 0x9226, 0xfd126000 / 7
USB Device: Display iSight, apple_vendor_id, 0x8508, 0xfd125000 / 6
USB Device: Display Audio, apple_vendor_id, 0x1105, 0xfd124000 / 5
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd110000 / 3
 
If only the RAM was cheap. I've run AHT and memtest and no issues found. Haven't KPd since the last two either. I dunno...
 
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