Macbook pro late 2011 Kernel Panic: bad ram? Not really

Question

Level 1

0 points

Macbook pro late 2011 Kernel Panic: bad ram? Not really

Hi guys, I'm Experiencing random kernel panics with my MacBook Pro 13" Unibody Late 2011. The kernel panics are completely random but I found a way to reproduce it with playing 2 videos in youtube simultaneously. The longest interval between kernel panics is about 20 minutes; I got sometimes 2 hours results.

Running the mac in safe mode, I can use the mac for hours and the kernel panic will not happen.

Strange thing is that the problem arise even when I load a linux live distro (ubuntu): this makes me think it's an hardware related problem.

I think my problem is related to this thread: Processor context corrupt.

I already changed the ssd and the ram (2x4 GB new Crucial modules) but kernel panic is still happening. No results even resetting PRAM and SMC.

Here's a little extract of kernel panic: as you'll see there are no third party modules loaded and applications installed.

Mon Jul 21 19:19:39 2014

Machine-check capabilities 0x0000000000000c07:

family: 6 model: 42 stepping: 7 microcode: 40

Intel(R) Core(TM) i5-2435M CPU @ 2.40GHz

7 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: machine-check status 0x0000000000000005:

restart IP valid

machine-check in progress

MCA error-reporting registers:

IA32_MC0_STATUS(0x401): 0xb200000000030005 valid

MCA error code: 0x0005

Model specific error code: 0x0003

Other information: 0x00000000

Threshold-based status: Undefined

Status bits:

Processor context corrupt

Error enabled

Uncorrected error

IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid

IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid

IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid

IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid

IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid

IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid

Processor 3: machine-check status 0x0000000000000005:

restart IP valid

machine-check in progress

MCA error-reporting registers:

IA32_MC0_STATUS(0x401): 0xb200000000030005 valid

MCA error code: 0x0005

Model specific error code: 0x0003

Other information: 0x00000000

Threshold-based status: Undefined

Status bits:

Processor context corrupt

Error enabled

Uncorrected error

IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid

IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid

IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid

IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid

IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid

IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid

panic(cpu 3 caller 0xffffff800a4dca29): "Machine Check at 0xffffff7f8bdebba7, registers:\n" "CR0: 0x000000008001003b, CR2: 0xffffff80b7740d20, CR3: 0x000000000c672000, CR4: 0x00000000000606e0\n" "RAX: 0x0000000000000031, RBX: 0xffffff8014d0b000, RCX: 0x0000000000000001, RDX: 0x0000000000000000\n" "RSP: 0xffffff8088b83d40, RBP: 0xffffff8088b83d70, RSI: 0x0000000000000007, RDI: 0xffffff8014eab100\n" "R8: 0x0000000000000000, R9: 0x0000000000000007, R10: 0x0000000000000000, R11: 0xffffffffffffff00\n" "R12: 0xffffff8014e605c0, R13: 0x0000000000000007, R14: 0xffffff7f8be00e20, R15: 0x00000000000008f8\n" "RFL: 0x0000000000000046, RIP: 0xffffff7f8bdebba7, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2422.1.72/osfmk/i386/trap_native.c:1 68

Backtrace (CPU 3), Frame : Return Address

0xffffff8083345e80 : 0xffffff800a422f69

0xffffff8083345f00 : 0xffffff800a4dca29

0xffffff8083346060 : 0xffffff800a4f3eaf

0xffffff8088b83d70 : 0xffffff7f8bddc953

0xffffff8088b83e70 : 0xffffff7f8bddbb89

0xffffff8088b83f30 : 0xffffff800a4dda5c

0xffffff8088b83f50 : 0xffffff800a43757a

0xffffff8088b83f90 : 0xffffff800a4378c8

0xffffff8088b83fb0 : 0xffffff800a4d6aa7

Kernel Extensions in backtrace:

com.apple.driver.AppleIntelCPUPowerManagement(216.0)[A6EE4D7B-228E-3A3C-95BA-10 ED6F331236]@0xffffff7f8bdd9000->0xffffff7f8be03fff

BSD process name corresponding to current thread: kernel_task

Mac OS version:

13B42

Kernel version:

Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64

Kernel UUID: 1D9369E3-D0A5-31B6-8D16-BFFBBB390393

Kernel slide: 0x000000000a200000

Kernel text base: 0xffffff800a400000

System model name: MacBookPro8,1 (Mac-94245B3640C91C81)

System uptime in nanoseconds: 338079466454

last loaded kext at 247526636793: com.apple.filesystems.msdosfs 1.9 (addr 0xffffff7f8c1d6000, size 65536)

loaded kexts:

com.apple.filesystems.msdosfs 1.9

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.filesystems.autofs 3.0

com.apple.driver.AudioAUUC 1.60

com.apple.driver.AppleHDAHardwareConfigDriver 2.5.3fc1

com.apple.driver.AppleTyMCEDriver 1.0.2d2

com.apple.driver.AGPM 100.14.11

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.iokit.IOBluetoothSerialManager 4.2.0f6

com.apple.driver.AppleHDA 2.5.3fc1

com.apple.driver.AppleMikeyDriver 2.5.3fc1

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.driver.AppleThunderboltIP 1.0.10

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHWAccess 1

com.apple.driver.AppleLPC 1.7.0

com.apple.driver.ApplePolicyControl 3.4.12

com.apple.driver.AppleSMCLMU 2.0.4d1

com.apple.driver.AppleBacklight 170.3.5

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AppleMuxControl 3.4.12

com.apple.driver.AppleUpstreamUserClient 3.5.13

com.apple.driver.AppleMCCSControl 1.1.12

com.apple.iokit.IOBluetoothUSBDFU 4.2.0f6

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.0f6

com.apple.driver.AppleIntelHD3000Graphics 8.1.8

com.apple.driver.AppleIntelSNBGraphicsFB 8.1.8

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.SMCMotionSensor 3.0.4d1

com.apple.driver.AppleUSBTCButtons 240.2

com.apple.driver.AppleUSBTCKeyEventDriver 240.2

com.apple.driver.AppleUSBTCKeyboard 240.2

com.apple.driver.AppleIRController 325.7

com.apple.iokit.SCSITaskUserClient 3.6.0

com.apple.driver.AppleFileSystemDriver 3.0.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 35

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.4.0

com.apple.driver.AppleUSBHub 650.4.4

com.apple.driver.AppleFWOHCI 4.9.9

com.apple.driver.AirPort.Brcm4331 700.20.22

com.apple.driver.AppleAHCIPort 2.9.5

com.apple.iokit.AppleBCM5701Ethernet 3.6.9b9

com.apple.driver.AppleSDXC 1.4.0

com.apple.driver.AppleUSBEHCI 650.4.1

com.apple.driver.AppleUSBUHCI 650.4.0

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleACPIButtons 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.0

com.apple.driver.AppleACPIEC 2.0

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 216.0.0

com.apple.nke.applicationfirewall 153

com.apple.security.quarantine 3

com.apple.driver.AppleIntelCPUPowerManagement 216.0.0

com.apple.kext.triggers 1.0

com.apple.AppleGraphicsDeviceControl 3.4.12

com.apple.iokit.IOSerialFamily 10.0.7

com.apple.driver.DspFuncLib 2.5.3fc1

com.apple.vecLib.kext 1.0.0

com.apple.iokit.IOAudioFamily 1.9.4fc11

com.apple.kext.OSvKernDSPLib 1.14

com.apple.iokit.IOSurface 91

com.apple.iokit.IOBluetoothFamily 4.2.0f6

com.apple.driver.AppleThunderboltEDMSink 1.2.1

com.apple.driver.AppleThunderboltDPOutAdapter 2.5.0

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.driver.AppleBacklightExpert 1.0.4

com.apple.driver.AppleGraphicsControl 3.4.12

com.apple.iokit.IOFireWireIP 2.2.5

com.apple.driver.AppleHDAController 2.5.3fc1

com.apple.iokit.IOHDAFamily 2.5.3fc1

com.apple.driver.AppleSMBusController 1.0.11d1

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.0f6

com.apple.iokit.IONDRVSupport 2.3.6

com.apple.iokit.IOGraphicsFamily 2.3.6

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.5.1d27

com.apple.driver.AppleSMC 3.1.6d1

com.apple.driver.AppleThunderboltDPInAdapter 2.5.0

com.apple.driver.AppleThunderboltDPAdapterFamily 2.5.0

com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.0

com.apple.driver.AppleUSBMultitouch 240.6

com.apple.iokit.IOUSBHIDDriver 650.4.4

com.apple.driver.AppleUSBMergeNub 650.4.0

com.apple.driver.AppleUSBComposite 650.4.0

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.0

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.6.0

com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.0

com.apple.driver.AppleThunderboltNHI 1.9.2

com.apple.iokit.IOThunderboltFamily 2.8.5

com.apple.iokit.IOUSBUserClient 650.4.4

com.apple.iokit.IOFireWireFamily 4.5.5

com.apple.iokit.IO80211Family 600.34

com.apple.iokit.IOAHCIFamily 2.6.0

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.driver.mDNSOffloadUserClient 1.0.1b4

com.apple.iokit.IONetworkingFamily 3.2

com.apple.iokit.IOUSBFamily 650.4.4

com.apple.driver.AppleEFINVRAM 2.0

com.apple.driver.AppleEFIRuntime 2.0

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 278.10

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.AppleKeyStore 2

com.apple.driver.DiskImages 371.1

com.apple.iokit.IOStorageFamily 1.9

com.apple.iokit.IOReportFamily 21

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 2.0

com.apple.iokit.IOPCIFamily 2.8

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.pthread 1

com.apple.kec.corecrypto 1.0

MacBook Pro, OS X Mavericks (10.9.4)

Posted on Jul 21, 2014 12:47 PM

Reply

Answer 1

OGELTHORPE

Level 9

57,305 points

Jul 21, 2014 1:12 PM in response to sn4psh0t

An Apple Hardware Test might give you a clue:

http://support.apple.com/kb/ht1509

Ciao.

Reply

Answer 2

sn4psh0t Author

Level 1

0 points

Jul 21, 2014 1:35 PM in response to OGELTHORPE

Unfortunately I did execute the AHT (enhanced) but no results: alla seems OK.

Reply

Answer 3

sn4psh0t Author

Level 1

0 points

Jul 21, 2014 3:09 PM in response to sn4psh0t

My main concern is: could this be overheating related? In idle mode my mac is around 50°C and overloaded it reaches 94°C. Maybe gpu and ram do not get enough cooling and so I have a kernel panic (in which ECC uncorrected errors are showed). I installed the software fan control and set the lowest temperature thresholding but still get same kernel panic. Is it worth to get new thermal paste for the CPU? P.s. RAM does not show any ecc error in the hardware list section.

Reply

Answer 4

OGELTHORPE

Level 9

57,305 points

Jul 21, 2014 3:40 PM in response to sn4psh0t

sn4psh0t wrote:

My main concern is: could this be overheating related?

Temperature levels are affected by several things such as the type and number of applications open, the ambient temperature, how the MBP is physically positioned and occasionally by foreign matter inside the unit. The temperatures that you describe for given circumstances are not necessarily out of line. Here is a screenshot of a temperature monitor from my MBP as I respond to you:

This is with a very light load on the MBP resources and is less than the 50°c that you report, but there could be explanations for the differences. The specific details would have to be examined but all told I do not view this as a matter for grave concern.

Temperatures in the 90°c+ range are not unusual when running applications such as Skype or rendering video. Again knowing the details would be required to make a definitive statement one way or the other.

Be aware that there are thermal shutdown provisions in the MBP that will protect it from heat damage.

Ciao.

Reply

Answer 5

sn4psh0t Author

Level 1

0 points

Jul 21, 2014 4:01 PM in response to OGELTHORPE

Yeah, I see. The fact is that I don't know what else to do. Overheating is one of the things I would bet. Apart from replacing the logic board, what else should I do? I read about reinstalling the firmware but I don't know if that's the case. Moreover, resetting SMC my charger did not change colour (maybe SMC was not really deleted?). Thanks

Reply

Answer 6

OGELTHORPE

Level 9

57,305 points

Jul 22, 2014 11:13 AM in response to sn4psh0t

I think that your best option is an appointment at an Apple store genius bar. The evaluation will be FREE regardless of the warranty status and you should be advised where the problem lies. Bring this kernel panic report with you.

Ciao.

Reply

Answer 7

sn4psh0t Author

Level 1

0 points

Jul 22, 2014 11:24 AM in response to OGELTHORPE

I already went to an apple store and they told me to replace the logic board. I'm trying to not to spend 600€ too prematurely without trying any other solution 🙂

Reply

Answer 8

sn4psh0t Author

Level 1

0 points

Jul 26, 2014 5:47 AM in response to sn4psh0t

Update:

To give it a try I disconnected the battery on my mac and voilà: no more panic for >4 hours! As far as I know, when battery is not present, CPU speed is limited and reduced (I think -3x) so actually it might be a problem of:

a) dead battery (even if from system info battery health is normal)

b) cpu running at max speed (causing so a kernel panic).

I reconnected the battery and ran the same test I did without battery. This time to limit cpu usage I used a software called 'Apppolice'. I limited both GoogleChrome and Safari and for >1 hours no kernel panic. When I disabled 'Apppolice' boom! After 2 minutes I had a kernel panic.

So, basically my concern is: is it worth to buy a new battery to see if it's causing the problem or is the CPU itself the problem?

Does anyone knows some good software to limit CPU speed so that I can try running at lower speed (checking this way if kernel panic comes)?

Thanks

Reply

Answer 9

OGELTHORPE

Level 9

57,305 points

Jul 26, 2014 7:28 AM in response to sn4psh0t

App Police is an application that is a new for me. Very interesting. When the battery is disconnected (or dead), OSX will throttle the CPU, thus possibly explaining the similar results experienced with App Police.

If possible I would rid the MBP of Google Chrome. It has a history of compatibility problems with OSX.

Open System Information>Power and post this from your MBP:

(Make certain that the charger is connected)

There may be a clue regarding you MBP battery.

Ciao.

Reply

Answer 10

sn4psh0t Author

Level 1

0 points

Jul 26, 2014 7:48 AM in response to OGELTHORPE

Reply

Answer 11

OGELTHORPE

Level 9

57,305 points

Jul 26, 2014 8:32 AM in response to sn4psh0t

I see no issues with your current battery, so a replacement would be pointless. Throttling the CPU thus making the MBP functional really is not the optimum solution. I would be inclined to go to an Apple store again ( different store or technician) and have the MBP reevaluated. This time I would ask what specifically is the problem. The logic board contains many parts.

Ciao.

Reply

Answer 12

sn4psh0t Author

Level 1

0 points

Jul 26, 2014 8:39 AM in response to OGELTHORPE

OGELTHORPE thanks four your help. I agree with you on the battery. I'll give a last chance to my MBP changing thermal paste (maybe cpu at full speed causes some issues). Btw I 'm now using safari with youtube and the mac still does not crash (maybe Chrome contributes to frequent panics since it's more CPU greedy).

Reply

Answer 13

sn4psh0t Author

Level 1

0 points

Sep 23, 2014 12:29 AM in response to sn4psh0t

Guys, I found a workaround that fixed the problem for me.

I deleted the 2 kexts from /System/Library/Extensions/AppleCPUIntelPowerManagement* and from that moment on, never had a single kernel panic.

Not elegant but it worked for me!

Reply

Answer 14

wolane

Level 1

6 points

Jul 3, 2015 9:21 AM in response to sn4psh0t

Wow, I’ve been having the same problem with my 2011 MacBook Pro for several weeks now. I’ve tried all the same things. My kernel panics usually cancelled startup. As others have reported, I could do a routine of zapping the PRAM and then Safe Boot, and that would work for a while - usually until the machine went to Sleep and I tried to reawaken it. Yesterday, I decided to trash my Flash, thinking that some of the Flash updates might have corrupted something on the video side of the system, because the problem appeared to be a bad Display or Video card, yet it seemed to respond to software tweaks (like the Safe Boot). That seemed to work for the rest of the day, but then this morning, it wasn’t working anymore. So now, I’ve just tried trashing the two kexts as sn4psh0t suggested, and so far it’s working! Amazing. So thanks for that! (And does anyone know WHY this workaround would work...?) I realize this thread is already close to a year old, but the problem is very fresh for me...

Reply

Answer 15

wolane

Level 1

6 points

Jul 3, 2015 10:05 AM in response to wolane

Ok so I'm not out of the woods yet. Just frozen out of Safari twice with the vertical blue bars covering the screen. So I guess trashing those kext files wasn't the answer for me. So.. have there been any new proposed fixes for this problem in the past few months? I'd appreciate any advice that anyone might have found useful... I'm not ready to trash this MacBook Pro yet... although I found I couldn't upgrade it beyond System 10.6.8 without toasting the logic board - replaced the logic board twice under warranty, and after that, I gave up trying to upgrade. So there are definitely some quirks with this model/year...

Reply