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Question: iMac randomly restarts with frequent kernel panics

About 6 weeks ago, my iMac started randomly restarting multiple times a day. After logging back in, a kernel panic report followed. I'm very unfamiliar with the content of the report and what it means. The only thing I can think of around the time the problem started was when I added a new admin user account on my iMac which is very seldom used. I'm not saying that's the cause. I have since updated my OS to Sierra 10.12.6 hoping this would solve the problem. It did not. I'm also a Parallels 13 and a Windows 10 user. My Chrome browser is always open, as well as Parallels and Windows, when the restart suddenly happens. I've been using this iMac the same way daily for the past year with no problems until now. Even when my iMac is asleep, the restart randomly happens. Can anyone help me by viewing the latest report?


My iMac info:

iMac (Retina 5K, 27-inch, Late 2015)

Processor 3.3 GHz Intel Core i5

Memory 64 GB 1867 MHz DDR3

Startup Disk Macintosh HD

Graphics AMD Radeon R9 M395 2048 MB


Anonymous UUID: E784948D-296C-2D84-6D98-91F6DA385A15



Fri Nov 10 23:42:20 2017



*** Panic Report ***

panic(cpu 0 caller 0xffffff801ddff3cd): Kernel trap at 0xffffff7f9ff12d80, type 14=page fault, registers:

CR0: 0x0000000080010033, CR2: 0x0000000000000048, CR3: 0x0000000f735c305a, CR4: 0x00000000003627e0

RAX: 0x0000000000000000, RBX: 0xffffff80b20bd000, RCX: 0x0000000009000000, RDX: 0xffffff80ab372a20

RSP: 0xffffff976ffa32e0, RBP: 0xffffff976ffa33c0, RSI: 0x0000000000000002, RDI: 0xffffff80ab372a20

R8: 0xffffff976ffa33ee, R9: 0xffffff976ffa3386, R10: 0xffffff80b20bd000, R11: 0x0000000000000002

R12: 0xffffff80abd99c00, R13: 0x0000000000000000, R14: 0x0000000000000000, R15: 0x0000000000000002

RFL: 0x0000000000010202, RIP: 0xffffff7f9ff12d80, CS: 0x0000000000000008, SS: 0x0000000000000010

Fault CR2: 0x0000000000000048, Error code: 0x0000000000000002, Fault CPU: 0x0, PL: 0, VF: 0



Backtrace (CPU 0), Frame : Return Address

0xffffff976ffa2f70 : 0xffffff801dcea56c

0xffffff976ffa2ff0 : 0xffffff801ddff3cd

0xffffff976ffa31d0 : 0xffffff801dc9b593

0xffffff976ffa31f0 : 0xffffff7f9ff12d80

0xffffff976ffa33c0 : 0xffffff7f9ff49362

0xffffff976ffa3470 : 0xffffff7f9ff49065

0xffffff976ffa34e0 : 0xffffff7f9ff48e71

0xffffff976ffa35b0 : 0xffffff7f9ff27725

0xffffff976ffa3640 : 0xffffff801df4d36a

0xffffff976ffa36d0 : 0xffffff801df046e5

0xffffff976ffa3840 : 0xffffff801df0c260

0xffffff976ffa3900 : 0xffffff801df0b0ec

0xffffff976ffa3a80 : 0xffffff801df09992

0xffffff976ffa3d20 : 0xffffff7f9ff21759

0xffffff976ffa3da0 : 0xffffff801df3b0ce

0xffffff976ffa3e50 : 0xffffff801e19bb0a

0xffffff976ffa3ef0 : 0xffffff801e19bc7e

0xffffff976ffa3f50 : 0xffffff801e224995

0xffffff976ffa3fb0 : 0xffffff801dc9bd96

Kernel Extensions in backtrace:

com.apple.filesystems.hfs.kext(366.70.3)[42F964BB-20C0-3D36-B19F-8F7D48C59EAC]@ 0xffffff7f9ff01000->0xffffff7f9ff69fff

dependency: com.apple.filesystems.hfs.encodings.kext(1)[7C1264E1-EEB2-39FC-B8E2-71BCF122231 D]@0xffffff7f9fefa000



BSD process name corresponding to current thread: backupd



Mac OS version:

16G1036



Kernel version:

Darwin Kernel Version 16.7.0: Wed Oct 4 00:17:00 PDT 2017; root:xnu-3789.71.6~1/RELEASE_X86_64

Kernel UUID: F487A842-6E21-37AB-83C3-83F951218734

Kernel slide: 0x000000001da00000

Kernel text base: 0xffffff801dc00000

__HIB text base: 0xffffff801db00000

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



System uptime in nanoseconds: 24484016346095

last loaded kext at 12955201797851: com.apple.driver.AppleXsanScheme 3 (addr 0xffffff7fa1c9c000, size 32768)

last unloaded kext at 13018542924373: com.apple.driver.AppleXsanScheme 3 (addr 0xffffff7fa1c9c000, size 32768)

loaded kexts:

com.parallels.virtualhid 1.0.3 3

com.parallels.virtualsound 1.0.36 36

com.apple.filesystems.afpfs 11.0.5

com.apple.nke.asp-tcp 8.0.1

com.apple.driver.AudioAUUC 1.70

com.apple.driver.AppleTopCaseHIDEventDriver 114

com.apple.driver.AppleHSBluetoothDriver 114

com.apple.filesystems.autofs 3.0

com.apple.iokit.IOBluetoothSerialManager 5.0.5f1

com.apple.driver.AGPM 110.23.17

com.apple.driver.ApplePlatformEnabler 2.7.0d0

com.apple.driver.X86PlatformShim 1.0.0

com.apple.driver.AppleMikeyHIDDriver 131

com.apple.driver.AppleMikeyDriver 279.48

com.apple.driver.AppleHDA 279.48

com.apple.driver.AppleUpstreamUserClient 3.6.4

com.apple.kext.AMDFramebuffer 1.5.1

com.apple.driver.AppleGraphicsDevicePolicy 3.14.49

com.apple.driver.pmtelemetry 1

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.AMDRadeonX4000 1.5.1

com.apple.driver.AppleIntelPCHPMC 1.1

com.apple.driver.AppleHV 1

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.kext.AMD9000Controller 1.5.1

com.apple.iokit.BroadcomBluetooth20703USBTransport 5.0.5f1

com.apple.driver.AppleThunderboltIP 3.0.8

com.apple.driver.AppleSMCLMU 208

com.apple.driver.AppleMCCSControl 1.3.4

com.apple.driver.AppleIntelSKLGraphics 10.2.5

com.apple.driver.AppleIntelSKLGraphicsFramebuffer 10.2.5

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 40

com.apple.filesystems.hfs.kext 366.70.3

com.apple.iokit.AppleBCM5701Ethernet 10.2.10

com.apple.driver.AppleSDXC 1.7.6

com.apple.driver.AirPort.Brcm4360 1151.1.1a1

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.security.SecureRemotePassword 1.0

com.apple.driver.AppleMultitouchDriver 368.16

com.apple.driver.AppleInputDeviceSupport 76.7

com.apple.driver.IOBluetoothHIDDriver 5.0.5f1

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 279.48

com.apple.kext.OSvKernDSPLib 525

com.apple.driver.AppleSSE 1.0

com.apple.driver.AppleSMBusPCI 1.0.14d1

com.apple.iokit.IOUSBHIDDriver 900.4.1

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.AppleHDAController 279.48

com.apple.iokit.IOHDAFamily 279.48

com.apple.iokit.IOAudioFamily 205.15

com.apple.vecLib.kext 1.2.0

com.apple.kext.AMDSupport 1.5.1

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 6.0.0d8

com.apple.iokit.IOSerialFamily 11

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.driver.AppleThunderboltEDMSink 4.1.1

com.apple.driver.AppleGraphicsControl 3.14.49

com.apple.driver.AppleSMC 3.1.9

com.apple.driver.AppleSMBusController 1.0.18d1

com.apple.iokit.IOSurface 159.10

com.apple.iokit.IONDRVSupport 516.1

com.apple.AppleGraphicsDeviceControl 3.14.49

com.apple.iokit.IOAcceleratorFamily2 311.15

com.apple.iokit.IOGraphicsFamily 515.3

com.apple.iokit.IOSCSIArchitectureModelFamily 394.50.1

com.apple.driver.CoreStorage 540.30.1

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

com.apple.driver.usb.IOUSBHostHIDDevice 1.1

com.apple.driver.usb.networking 5.0.0

com.apple.driver.usb.AppleUSBHostCompositeDevice 1.1

com.apple.driver.AppleThunderboltDPInAdapter 5.0.2

com.apple.driver.AppleThunderboltDPOutAdapter 5.0.2

com.apple.driver.AppleThunderboltDPAdapterFamily 5.0.2

com.apple.driver.AppleThunderboltPCIDownAdapter 2.1.3

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 IM171.0110.B00, 4 processors, Intel Core i5, 3.3 GHz, 64 GB, SMC 2.34f2

Graphics: AMD Radeon R9 M395, AMD Radeon R9 M395, PCIe, 2048 MB

Memory Module: BANK 0/DIMM0, 16 GB, DDR3, 1867 MHz, 0x00, 0x484D54343147533642465238412D52442020

Memory Module: BANK 0/DIMM1, 16 GB, DDR3, 1867 MHz, 0x00, 0x484D54343147533642465238412D52442020

Memory Module: BANK 1/DIMM0, 16 GB, DDR3, 1867 MHz, 0x00, 0x484D54343147533642465238412D52442020

Memory Module: BANK 1/DIMM1, 16 GB, DDR3, 1867 MHz, 0x00, 0x484D54343147533642465238412D52442020

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x14A), Broadcom BCM43xx 1.0 (7.21.171.131.1a1)

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

Network Service: Wi-Fi, AirPort, en1

Serial ATA Device: APPLE HDD ST2000DM001, 2 TB

Serial ATA Device: APPLE SSD SM0128G, 121.33 GB

USB Device: USB 3.0 Bus

USB Device: Bluetooth USB Host Controller

USB Device: FaceTime HD Camera (Built-in)

USB Device: USB Receiver

Thunderbolt Bus: iMac, Apple Inc., 28.1

IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS Sierra (10.12.6), Parallels 13, Windows 10

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Question: iMac randomly restarts with frequent kernel panics