You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

User profile for user: Ibelins
Ibelins Author
User level: Level 1
0 points

kernel panic xpcproxy

Hi everyone,


Every now and then my macbook pro (mid 2011, 15inch, 16g RAM from Crucial) suddenly crashes without a warning.

I checked the hardware and everything is working just fine so I guess it must be the software.

I get the following report:


Anonymous UUID: 73B8C91E-A73E-D455-191F-DD2612E03A67



Mon Feb 8 10:38:43 2016



*** Panic Report ***

panic(cpu 2 caller 0xffffff802eb6beed): "a freed zone element has been modified in zone MAC Labels: expected 0xffffff8053b39e80 but found 0xffffff8051b39e80, bits changed 0x2000000, at offset 0 of 64 in element 0xffffff8051b39ec0, cookies 0x3f00111253cf4fbe 0x53521b7ac093bf5"@/SourceCache/xnu/xnu-2782.50.1/osfmk/kern/zalloc.c:496

Backtrace (CPU 2), Frame : Return Address

0xffffff8219103b60 : 0xffffff802eb2ad21

0xffffff8219103be0 : 0xffffff802eb6beed

0xffffff8219103c50 : 0xffffff802eb6b9f1

0xffffff8219103c90 : 0xffffff802eb6a837

0xffffff8219103dc0 : 0xffffff802f12fa3c

0xffffff8219103de0 : 0xffffff802efa4789

0xffffff8219103e10 : 0xffffff802efa683c

0xffffff8219103e40 : 0xffffff802efa3c9b

0xffffff8219103f00 : 0xffffff802efd03b5

0xffffff8219103f50 : 0xffffff802f04b376

0xffffff8219103fb0 : 0xffffff802ec344a6



BSD process name corresponding to current thread: xpcproxy



Mac OS version:

14F1509



Kernel version:

Darwin Kernel Version 14.5.0: Tue Sep 1 21:23:09 PDT 2015; root:xnu-2782.50.1~1/RELEASE_X86_64

Kernel UUID: 06D286E3-A8A1-3BE7-A7EB-EAC6E0C69758

Kernel slide: 0x000000002e800000

Kernel text base: 0xffffff802ea00000

__HIB text base: 0xffffff802e900000

System model name: MacBookPro9,1 (Mac-4B7AC7E43945597E)



System uptime in nanoseconds: 83534892688

last loaded kext at 66728331716: com.apple.driver.AudioAUUC 1.70 (addr 0xffffff7fb1006000, size 32768)

loaded kexts:

com.apple.driver.AudioAUUC 1.70

com.apple.driver.AppleGraphicsDevicePolicy 3.7.7

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AGPM 110.19.6

com.apple.driver.ApplePlatformEnabler 2.2.0d4

com.apple.driver.X86PlatformShim 1.0.0

com.apple.filesystems.autofs 3.0

com.apple.iokit.IOBluetoothSerialManager 4.3.6f3

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyDriver 272.18.3

com.apple.driver.AppleHDAHardwareConfigDriver 272.18.3

com.apple.driver.AppleHDA 272.18.3

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.iokit.IOBluetoothUSBDFU 4.3.6f3

com.apple.GeForce 10.0.4

com.apple.driver.AppleLPC 1.7.3

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.6f3

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleMuxControl 3.10.25

com.apple.driver.AppleFIVRDriver 4.1.0

com.apple.driver.AppleIntelHD4000Graphics 10.0.6

com.apple.nvidia.NVDAStartup 10.0.4

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AppleIntelFramebufferCapri 10.0.6

com.apple.driver.SMCMotionSensor 3.0.4d1

com.apple.driver.AppleBacklight 170.7.4

com.apple.driver.AppleMCCSControl 1.2.12

com.apple.driver.AppleSMCLMU 2.0.7d0

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHWAccess 1

com.apple.driver.AppleHV 1

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.driver.AppleUSBTCButtons 240.2

com.apple.driver.AppleUSBTCKeyEventDriver 240.2

com.apple.driver.AppleUSBTCKeyboard 240.2

com.apple.driver.AppleIRController 327.5

com.apple.driver.AppleFileSystemDriver 3.0.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 36

com.apple.driver.AppleUSBHub 705.4.2

com.apple.iokit.SCSITaskUserClient 3.7.5

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.7.1

com.apple.iokit.IOAHCIPassThrough 1.0.3

com.apple.driver.AirPort.Brcm4331 800.20.24

com.apple.driver.AppleSDXC 1.6.5

com.apple.iokit.AppleBCM5701Ethernet 10.1.3

com.apple.driver.AirPort.Brcm4360 930.37.3

com.apple.driver.AppleFWOHCI 5.5.2

com.apple.driver.AppleAHCIPort 3.1.2

com.apple.driver.AppleUSBEHCI 705.4.14

com.apple.driver.AppleUSBXHCI 710.4.11

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 3.1

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0

com.apple.nke.applicationfirewall 161

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleIntelCPUPowerManagement 218.0.0

com.apple.kext.triggers 1.0

com.apple.iokit.IOSerialFamily 11

com.apple.driver.DspFuncLib 272.18.3

com.apple.kext.OSvKernDSPLib 1.15

com.apple.nvidia.driver.NVDAGK100Hal 10.0.4

com.apple.nvidia.driver.NVDAResman 10.0.4

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.6f3

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.AppleGraphicsControl 3.10.25

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.driver.AppleHDAController 272.18.3

com.apple.iokit.IOHDAFamily 272.18.3

com.apple.iokit.IOAudioFamily 203.3

com.apple.vecLib.kext 1.2.0

com.apple.iokit.IOAcceleratorFamily2 156.16

com.apple.AppleGraphicsDeviceControl 3.10.25

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.iokit.IOFireWireIP 2.2.6

com.apple.iokit.IOSurface 97.4

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.iokit.IOBluetoothFamily 4.3.6f3

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.AppleThunderboltEDMSink 4.0.3

com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6

com.apple.driver.AppleUSBMultitouch 245.2

com.apple.iokit.IOUSBHIDDriver 705.4.0

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.5

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

com.apple.iokit.IOAHCISerialATAPI 2.6.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

com.apple.driver.AppleThunderboltNHI 3.1.7

com.apple.iokit.IOThunderboltFamily 4.2.2

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.iokit.IO80211Family 730.60

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.iokit.IOFireWireFamily 4.5.8

com.apple.iokit.IOAHCIFamily 2.7.5

com.apple.iokit.IOUSBFamily 720.4.4

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 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.DiskImages 398

com.apple.iokit.IOStorageFamily 2.0

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 3.1

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.Libm 1

com.apple.kec.pthread 1

com.apple.kec.corecrypto 1.0

Model: MacBookPro9,1, BootROM MBP91.00D3.B0C, 4 processors, Intel Core i7, 2.3 GHz, 16 GB, SMC 2.1f175

Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In

Graphics: NVIDIA GeForce GT 650M, NVIDIA GeForce GT 650M, PCIe, 512 MB

Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136

Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (7.15.166.24.3)

Bluetooth: Version 4.3.6f3 16238, 3 services, 18 devices, 1 incoming serial ports

Network Service: Wi-Fi, AirPort, en1

Serial ATA Device: APPLE HDD HTS545050A7E362, 500,11 GB

Serial ATA Device: HL-DT-ST DVDRW GS41N

USB Device: Hub

USB Device: FaceTime HD Camera (Built-in)

USB Device: Hub

USB Device: Hub

USB Device: BRCM20702 Hub

USB Device: Bluetooth USB Host Controller

USB Device: IR Receiver

USB Device: Apple Internal Keyboard / Trackpad

Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1




Would be awesome if somebody could help me troubleshoot this kernel panic/crash...!


Regards

MacBook Pro, OS X Yosemite (10.10.5), null

Posted on Feb 8, 2016 2:06 AM

Reply
6 replies
User profile for user: K Shaffer
K Shaffer
User level: Level 8
35,374 points

Feb 8, 2016 2:31 AM in response to Ibelins

You could try and isolate the cause, or at least troubleshoot as far as possible

and then at some point, if no forward traction can occur, arrange a visit to an

Apple Store with Genius (they can check the computer) or an Authorized Apple

Service Provider; among these are premium or specialist designations where

available who may also be authorized Apple resellers, independent businesses.


• Try safe mode if your Mac doesn't finish starting up - Apple Support


About kernel panic messages and routines that may help determine their cause

or their scope; and sometimes provide a means to resolve them...


• OS X Yosemite: If your Mac restarts and a message appears


Read through the link above and try what is suggested to see what details are learned.

The first link does show Safe Mode instructions as a means to start + troubleshoot.


Another item to try to see if the effect is software, is to try a different user account:

• How to test an issue in another user account on your Mac - Apple Support


Other suggestions and useful ideas may be found in other linked sources:


• Generic 'Resolving Kernel Panic' instructions + troubleshooting - the XLab:

http://www.thexlab.com/faqs/kernelpanics.html


• Technical Note TN2063: Understanding and Debugging Kernel Panics:

https://developer.apple.com/library/mac/technotes/tn2063/_index.html


Since there are hardware and software causes behind kernel panics, the message

does relate to a place to start. The Technical Note does show details on debugging

or understanding the coded messages; although a bit dated it is a fair resource.


At 1:30 AM on Monday...

Good luck in resolving this matter! 🙂

Reply
User profile for user: K Shaffer
K Shaffer
User level: Level 8
35,374 points

Feb 8, 2016 3:03 AM in response to K Shaffer

PS: XPC -- this appears relate to X Code. If you were developing software or using XCode to use software

this may relate to the XPCproxy. Look into the earlier explanation in the Error message, again...


panic(cpu 2 caller 0xffffff802eb6beed): "a freed zone element has been modified in zone MAC Labels: expected 0xffffff8053b39e80 but found 0xffffff8051b39e80, bits changed 0x2000000, at offset 0 of 64 in element 0xffffff8051b39ec0, cookies 0x3f00111253cf4fbe 0x53521b7ac093bf5"@/SourceCache/xnu/xnu-2782.50.1/osfmk/kern/zalloc.c:496


Although you may not have anything using XCode or at a developer level, the previous Developer article

on Understanding and Debugging Kernel Panics should be revealing, even if not resulting in a solution.


The various aspects of XPC and other layers of kernel and device drivers, are detailed below:


• Kernel and Device Drivers Layer - OS X Technology - Overview/System

https://developer.apple.com/library/mac/documentation/MacOSX/Conceptual/OSX_Tech nology_Overview/SystemTechnology/SystemT…


Do you have any system modification software, or have you changed the system in terminal or command-line?

Some users may use third party utilities that can change the OS X at the lower level & do damages there.


Thought I'd get back to you on this. Even if it may not help all that much.

And at 2 AM local time, I should be asleep long before now. Oh well...


Good luck & happy computing! 🙂

Reply
User profile for user: Linc Davis
Linc Davis
User level: Level 10
209,673 points

Feb 8, 2016 12:19 PM in response to Ibelins

According to Apple's specifications, your model can use at most 8 GB of memory, but you've installed 16 GB. The results are unpredictable. The manual for the product gives instructions for adding aftermarket memory that read something like this:

You can add two 4 GB memory modules for a maximum of 8 GB of memory.

I know the RAM vendor says that the out-of-spec configuration will work. If you accept that assurance, please ask the vendor for help with any problems you have with it. Otherwise, reinstall the original memory, or new memory that complies with Apple's instructions.

Reply
User profile for user: Ibelins
Ibelins Author
User level: Level 1
0 points

Feb 8, 2016 12:23 PM in response to Linc Davis

Dear Linc and Shaffer,


Thanks for helping me out here..

The problem was exactly caused by using 16g of RAM.

I googled a little bit around and saw that the issues of using 16g RAM in Macbook Pro from Mid 2011 started occurring when upgrading to OS Mavericks (happened to me as well).

Bit annoying now that this issue takes place because I often need a lot of work memory to run big datasets on multiple cores.

Any idea if the problem continues to exist on El Capitan?


Thanks again!

Reply
User profile for user: K Shaffer
K Shaffer
User level: Level 8
35,374 points

Feb 8, 2016 1:42 PM in response to Ibelins

Some users had issue with the memory chips supplied by reputable sources, but

only when they were not among specific ones tested by the seller in the exact Mac.


So, given Crucial (and others) supply a variety of similar specification RAM chips

I've been skeptical of just buying two 8-GB chips {for use in my i7 quad-core Mini}

when there are at least three different versions of what appears to match specs.


But they don't. This is where the problem can be sourced.


My first impression of a kernel panic where none had existed before, is to trace

the upgrade of RAM to see if anything (console logs, etc) began to show effects

about the time of the upgrade to new different chips. And be sure to keep those

original RAM memory chips, to revert to and test the hardware using them first.


Some companies like buyers of their RAM to 'trade-in' the original RAM chips.


Don't do it. They're inexpensive and are helpful in troubleshooting. And part of

my reply was in an assumption the unit you have could have been running OK

memory upgrade of the exactingly specific tested RAM chips. Otherwise I'd have

suggested to revert to the original ones, and test using less applications running

or use a lesser encumbered second user account. [My bad.] In a second account

you could load up a testing utility or run a heavy load to see if the system holds up.


{I've had a few instances of terrible Kernel Panics that lead to an AASP damaging

logic boards-- a horror story about factory upgrade slot in iMacG4 last model, under

AppleCare without qualified AASP & took 6,000 total driving miles to accommodate.

Bought an iMac direct from Apple, none available in nearest reseller 200+ mi away.}


And thank you to Linc Davis for the correct thinking on the RAM upgrade; it was my

first suspicion. And given the various subtle differences in memory chips that do fit

but MAY work, I've not bought upgrades for my (one year old) Late-2012 Mini i7...

My 2005 G4 Mini (last model -- 1.5GHz PPC) is still considered my main computer.


One of the suggested vendors with 'guaranteed tested' upgrade memory, is:

• MacBook Pro 15" Mid 2012 - View Memory Options - OWC macsales, reference:

http://eshop.macsales.com/item/Other%20World%20Computing/1600DDR3S16P/


So the RAM upgrade you purchased should go back to the vendor, and if guaranteed

to work in your model, they are doubly wrong. Read all specs (if available) next time

because they aren't created equal even if their labels suggest it's so.


Good luck in this matter and continuing developments! 🙂

Reply

kernel panic xpcproxy

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.
Learn more Sign up