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Question: Panic Report Help

Can someone help me determine what's going on with this 5K iMac auto shutting down while exporting a video from FCPX?


Anonymous UUID: 8C6A0E03-B2BF-8709-0E00-4D4E89F6494C



Sat Nov 11 12:29:06 2017



*** Panic Report ***

panic(cpu 4 caller 0xffffff800a934a3d): "a freed zone element has been modified in zone kalloc.48: expected 0xdeadbeefdeadbeef but found 0xdeadbeefdeacbeef, bits changed 0x10000, at offset 16 of 48 in element 0xffffff80892e8ea0, cookies 0x3f0011efebc81e28 0x53521040e10a38f"@/Library/Caches/com.apple.xbs/Sources/xnu/xnu-3789.70.16/osf mk/kern/zalloc.c:650

Backtrace (CPU 4), Frame : Return Address

0xffffff959ae73b20 : 0xffffff800a8e953c

0xffffff959ae73ba0 : 0xffffff800a934a3d

0xffffff959ae73cf0 : 0xffffff800ae35de7

0xffffff959ae73d20 : 0xffffff800aee21f8

0xffffff959ae73d60 : 0xffffff800a9b6b47

0xffffff959ae73d90 : 0xffffff800a9b78e9

0xffffff959ae73dd0 : 0xffffff800a8ee7bc

0xffffff959ae73e30 : 0xffffff800a8cafb1

0xffffff959ae73e80 : 0xffffff800a8df777

0xffffff959ae73f10 : 0xffffff800a9ea198

0xffffff959ae73fb0 : 0xffffff800a89adb6



BSD process name corresponding to current thread: WindowServer



Mac OS version:

16G29



Kernel version:

Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64

Kernel UUID: D3314D98-5D40-3CD8-98A4-F1DD46C20E03

Kernel slide: 0x000000000a600000

Kernel text base: 0xffffff800a800000

__HIB text base: 0xffffff800a700000

System model name: iMac17,1 (Mac-B809C3757DA9BB8D)



System uptime in nanoseconds: 2027687220297

last loaded kext at 17478921276: com.apple.driver.AppleBluetoothMultitouch 92 (addr 0xffffff7f8d84d000, size 61440)

last unloaded kext at 1073537602428: com.apple.driver.AppleIntelLpssGspi 3.0.60 (addr 0xffffff7f8d438000, size 45056)

loaded kexts:

com.apple.driver.AppleBluetoothMultitouch 92

com.apple.driver.AppleTopCaseHIDEventDriver 114

com.apple.driver.AppleHSBluetoothDriver 114

com.apple.driver.AudioAUUC 1.70

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleMikeyHIDDriver 131

com.apple.driver.AppleMikeyDriver 279.48

com.apple.driver.AGPM 110.23.17

com.apple.driver.ApplePlatformEnabler 2.7.0d0

com.apple.driver.X86PlatformShim 1.0.0

com.apple.driver.AppleHDA 279.48

com.apple.driver.AppleGraphicsDevicePolicy 3.14.49

com.apple.driver.AppleUpstreamUserClient 3.6.4

com.apple.driver.pmtelemetry 1

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.kext.AMDFramebuffer 1.5.1

com.apple.iokit.IOBluetoothSerialManager 5.0.5f1

com.apple.driver.AppleIntelPCHPMC 1.1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleIntelSKLGraphics 10.2.5

com.apple.AMDRadeonX4000 1.5.1

com.apple.driver.AppleHV 1

com.apple.driver.AppleMCCSControl 1.3.4

com.apple.driver.AppleOSXWatchdog 1

com.apple.iokit.BroadcomBluetooth20703USBTransport 5.0.5f1

com.apple.kext.AMD9000Controller 1.5.1

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleIntelSKLGraphicsFramebuffer 10.2.5

com.apple.driver.AppleSMCLMU 208

com.apple.driver.AppleThunderboltIP 3.0.8

com.apple.iokit.SCSITaskUserClient 394.50.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 40

com.apple.filesystems.hfs.kext 366.70.1

com.apple.driver.AppleUSBODD 404.50.6

com.apple.driver.AppleSDXC 1.7.6

com.apple.iokit.AppleBCM5701Ethernet 10.2.10

com.apple.driver.AirPort.Brcm4360 1150.12.1a1

com.apple.iokit.IOAHCIBlockStorage 295.20.1

com.apple.driver.AppleAHCIPort 326.60.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleACPIButtons 5.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 5.0

com.apple.driver.AppleAPIC 1.7

com.apple.nke.applicationfirewall 172

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleHIDKeyboard 199

com.apple.driver.AppleMultitouchDriver 368.16

com.apple.driver.AppleInputDeviceSupport 76.7

com.apple.driver.IOBluetoothHIDDriver 5.0.5f1

com.apple.driver.usb.cdc.ncm 5.0.0

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 279.48

com.apple.kext.OSvKernDSPLib 525

com.apple.driver.AppleGraphicsControl 3.14.49

com.apple.iokit.IOSurface 159.9

com.apple.driver.AppleSSE 1.0

com.apple.driver.AppleHDAController 279.48

com.apple.iokit.IOHDAFamily 279.48

com.apple.driver.AppleSMBusController 1.0.18d1

com.apple.driver.AppleSMBusPCI 1.0.14d1

com.apple.iokit.IONDRVSupport 516.1

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 5.0.5f1

com.apple.iokit.IOBluetoothHostControllerUSBTransport 5.0.5f1

com.apple.iokit.IOBluetoothHostControllerTransport 5.0.5f1

com.apple.iokit.IOBluetoothFamily 5.0.5f1

com.apple.kext.AMDSupport 1.5.1

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.iokit.IOSerialFamily 11

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 6.0.0d8

com.apple.AppleGraphicsDeviceControl 3.14.49

com.apple.iokit.IOAcceleratorFamily2 311.14

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOGraphicsFamily 515.3

com.apple.driver.AppleThunderboltEDMSink 4.1.1

com.apple.driver.usb.IOUSBHostHIDDevice 1.1

com.apple.driver.CoreStorage 540.30.1

com.apple.filesystems.hfs.encodings.kext 1

com.apple.iokit.IOSCSIMultimediaCommandsDevice 394.50.1

com.apple.iokit.IOBDStorageFamily 1.8

com.apple.iokit.IODVDStorageFamily 1.8

com.apple.iokit.IOCDStorageFamily 1.8

com.apple.iokit.IOUSBMassStorageDriver 131.60.1

com.apple.iokit.IOSCSIArchitectureModelFamily 394.50.1

com.apple.driver.AppleThunderboltDPInAdapter 5.0.2

com.apple.driver.AppleThunderboltDPOutAdapter 5.0.2

com.apple.driver.AppleThunderboltDPAdapterFamily 5.0.2

com.apple.driver.AppleThunderboltPCIUpAdapter 2.1.3

com.apple.driver.AppleThunderboltPCIDownAdapter 2.1.3

com.apple.driver.AppleUSBAudio 308.7

com.apple.iokit.IOAudioFamily 205.15

com.apple.vecLib.kext 1.2.0

com.apple.driver.usb.cdc 5.0.0

com.apple.driver.usb.networking 5.0.0

com.apple.driver.usb.AppleUSBHostCompositeDevice 1.1

com.apple.driver.AppleThunderboltNHI 4.5.4

com.apple.iokit.IOThunderboltFamily 6.5.7

com.apple.iokit.IOEthernetAVBController 1.0.3b4

com.apple.iokit.IO80211Family 1200.12.2

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.driver.corecapture 1.0.4

com.apple.driver.AppleUSBMergeNub 900.4.1

com.apple.driver.AppleUSBHostMergeProperties 1.1

com.apple.iokit.IOAHCIFamily 288

com.apple.driver.usb.AppleUSBXHCIPCI 1.1

com.apple.driver.usb.AppleUSBXHCI 1.1

com.apple.driver.usb.AppleUSBHostPacketFilter 1.0

com.apple.iokit.IOUSBFamily 900.4.1

com.apple.driver.AppleEFINVRAM 2.1

com.apple.driver.AppleEFIRuntime 2.1

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.KernelRelayHost 1

com.apple.iokit.IOUSBHostFamily 1.1

com.apple.driver.AppleBusPowerController 1.0

com.apple.driver.DiskImages 444.50.16

com.apple.iokit.IOStorageFamily 2.1

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 5.0

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: iMac17,1, BootROM IM171.0105.B26, 4 processors, Intel Core i7, 4 GHz, 48 GB, SMC 2.34f2

Graphics: AMD Radeon R9 M395X, AMD Radeon R9 M395X, PCIe, 4096 MB

Memory Module: BANK 0/DIMM0, 16 GB, DDR3, 1867 MHz, 0x00, -

Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1867 MHz, 0x00, -

Memory Module: BANK 1/DIMM0, 16 GB, DDR3, 1867 MHz, 0x00, -

Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1867 MHz, 0x00, -

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x14A), Broadcom BCM43xx 1.0 (7.21.171.130.1a1)

Bluetooth: Version 5.0.5f1, 3 services, 27 devices, 1 incoming serial ports

Network Service: iPad, Ethernet, en6

Network Service: Wi-Fi, AirPort, en1

PCI Card: pci1b21,612, AHCI Controller, Thunderbolt@194,0,0

PCI Card: pci1b21,612, AHCI Controller, Thunderbolt@193,0,0

PCI Card: pci1b21,612, AHCI Controller, Thunderbolt@191,0,0

PCI Card: pci1b21,612, AHCI Controller, Thunderbolt@192,0,0

Serial ATA Device: APPLE HDD ST3000DM001, 3 TB

Serial ATA Device: APPLE SSD SM0128G, 121.33 GB

Serial ATA Device: ST8000VN0022-2EL112, 8 TB

Serial ATA Device: ST8000VN0022-2EL112, 8 TB

Serial ATA Device: ST8000VN0022-2EL112, 8 TB

USB Device: USB 3.0 Bus

USB Device: iPad

USB Device: Bluetooth USB Host Controller

USB Device: FaceTime HD Camera (Built-in)

USB Device: Apple USB SuperDrive

Thunderbolt Bus: iMac, Apple Inc., 28.1

Thunderbolt Device: AKiTiO Thunder 2 Quad, inXtron, 1, 24.1

Final Cut Pro X, OS X Yosemite (10.10.2), iMac 5K i7

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Nov 11, 2017 10:49 AM in response to sebourns In response to sebourns

Start by shutting down. Disconnect all peripherals except the Apple keyboard and mouse. Now, restart in Safe Mode. If the panics cease, then one or more peripherals and/or their software is causing the problem. Restart normally.


To test if your user account is causing the problem then create a new Admin user account. Log out of your account then reboot the computer and log into the test account.

Nov 11, 2017 10:49 AM

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Nov 11, 2017 12:53 PM in response to sebourns In response to sebourns

Your memory is failing:

0xdeadbeefdeadbeef but found

0xdeadbeefdeacbeef


You will notice there is a single bit change in the 2nd 'dead' of the 'd' changing to 'c'


This is a classic memory failure.


Contact the vender where you got your RAM and ask about getting a replacement

Nov 11, 2017 12:53 PM

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Nov 11, 2017 1:27 PM in response to Kappy In response to Kappy

45 years writing software an debugging core dumps (both user space and kernel). I've also written code that writes 0xdeadbeefdeadbeef into unused memory or guard cells to detect buffer overwrites.


The likelihood 1 bit in 0xdeadbeefdeadbeef was changed by a program writing to the wrong address or a buffer overwrite is extremely unlikely.

Nov 11, 2017 1:27 PM

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User profile for user: sebourns

Question: Panic Report Help