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Question: Reason for this kernel panic?

Hi everyone,

my iMac is starting to crash often and I'm unable to troubleshoot it. Can anyone shed some light on this subject? Thanks in advance!

Anonymous UUID: 045533E5-FFEA-286E-3EFA-9378ED393AB8

Mon Mar 12 14:43:51 2018

*** Panic Report ***

panic(cpu 4 caller 0xffffff801426aec2): "thread_invoke: preemption_level 1, possible cause: blocking while holding a spinlock, or within interrupt context"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-4570.41.2/osfm k/kern/sched_prim.c:2174

Backtrace (CPU 4), Frame : Return Address

0xffffff9223483600 : 0xffffff801424f606

0xffffff9223483650 : 0xffffff801437c654

0xffffff9223483690 : 0xffffff801436e149

0xffffff9223483710 : 0xffffff8014201120

0xffffff9223483730 : 0xffffff801424f03c

0xffffff9223483860 : 0xffffff801424edbc

0xffffff92234838c0 : 0xffffff801426aec2

0xffffff9223483940 : 0xffffff8014269e6f

0xffffff9223483990 : 0xffffff80143675c6

0xffffff92234839f0 : 0xffffff80141ffaad

0xffffff9223483a10 : 0xffffff80142d6241

0xffffff9223483af0 : 0xffffff801429bc63

0xffffff9223483c20 : 0xffffff8014230ec6

0xffffff9223483c50 : 0xffffff8014231ae3

0xffffff9223483ca0 : 0xffffff80142553b2

0xffffff9223483ce0 : 0xffffff7f94d4dadd

0xffffff9223483d20 : 0xffffff7f94da5109

0xffffff9223483d40 : 0xffffff7f94e5d67e

0xffffff9223483d90 : 0xffffff7f94db87de

0xffffff9223483dc0 : 0xffffff7f954e4102

0xffffff9223483e10 : 0xffffff7f94dac2fc

0xffffff9223483ed0 : 0xffffff8014890925

0xffffff9223483f30 : 0xffffff801488f132

0xffffff9223483f70 : 0xffffff801488e76c

0xffffff9223483fa0 : 0xffffff80142004f7

Kernel Extensions in backtrace:

com.nvidia.web.NVDAResmanWeb(10.2.9)[54347AEB-A457-319B-B0FA-536A95785906]@0xff ffff7f94d46000->0xffffff7f953befff

dependency: com.apple.iokit.IOPCIFamily(2.9)[8E6C654E-4A8F-3C6B-BBFE-BA8A68C9C146]@0xffffff 7f94c80000

dependency: com.apple.iokit.IONDRVSupport(517.22)[5672A7EF-44E8-3897-90DE-DAF4C1488143]@0xf fffff7f94d29000

dependency: com.apple.iokit.IOGraphicsFamily(517.22)[2AEA02BF-2A38-3674-A187-E5F610FD65B7]@ 0xffffff7f94cd5000

dependency: com.apple.AppleGraphicsDeviceControl(3.16.21)[F8503E88-24EF-3DBA-A4D6-FA1CE4C47 427]@0xffffff7f94d39000

com.nvidia.web.NVDAGK100HalWeb(10.2.9)[4CF09C75-1F42-31C5-B010-9FD3F18E5FE0]@0x ffffff7f953d5000->0xffffff7f95532fff

dependency: com.nvidia.web.NVDAResmanWeb(10.2.9)[54347AEB-A457-319B-B0FA-536A95785906]@0xff ffff7f94d46000

dependency: com.apple.iokit.IOPCIFamily(2.9)[8E6C654E-4A8F-3C6B-BBFE-BA8A68C9C146]@0xffffff 7f94c80000

BSD process name corresponding to current thread: kernel_task

Mac OS version:


Kernel version:

Darwin Kernel Version 17.4.0: Sun Dec 17 09:19:54 PST 2017; root:xnu-4570.41.2~1/RELEASE_X86_64

Kernel UUID: 18D901F1-4A03-3FF1-AE34-C26B2732F13C

Kernel slide: 0x0000000013e00000

Kernel text base: 0xffffff8014000000

__HIB text base: 0xffffff8013f00000

System model name: iMac14,2 (Mac-27ADBB7B4CEE8E61)

System uptime in nanoseconds: 440045098197073

last loaded kext at 424907358886305: com.apple.driver.usb.cdc 5.0.0 (addr 0xffffff7f97ef1000, size 28672)

last unloaded kext at 424967420952573: com.apple.driver.usb.cdc 5.0.0 (addr 0xffffff7f97ef1000, size 28672)

loaded kexts:

com.getdropbox.dropbox.kext 1.8.8

com.nvidia.CUDA 1.1.0

com.paragon-software.filesystems.ntfs 266.3.14

net.telestream.driver.TelestreamAudio 1.1.1

com.AmbrosiaSW.AudioSupport 4.1.4

com.nvidia.web.GeForceWeb 10.2.9

com.nvidia.web.NVDAGK100HalWeb 10.2.9

com.nvidia.web.NVDAResmanWeb 10.2.9

com.malwarebytes.mbam.rtprotection 3.2.35

com.apple.filesystems.smbfs 3.2.1

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.ApplePlatformEnabler 2.7.0d0

com.apple.driver.AGPM 110.23.30

com.apple.driver.X86PlatformShim 1.0.0

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleMikeyHIDDriver 131

com.apple.driver.AppleMikeyDriver 280.12

com.apple.driver.AppleHDA 280.12

com.apple.driver.AudioAUUC 1.70

com.apple.AGDCPluginDisplayMetrics 3.16.2

com.apple.driver.pmtelemetry 1

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.driver.AppleUpstreamUserClient 3.6.4

com.apple.iokit.IOBluetoothSerialManager 6.0.2f2

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHV 1

com.apple.driver.AppleIntelHD5000Graphics 10.3.0

com.apple.driver.eficheck 1

com.apple.driver.AppleBacklight 170.10.2

com.apple.driver.AppleLPC 3.1

com.apple.driver.AppleSMCLMU 211

com.apple.driver.AppleIntelFramebufferAzul 10.3.0

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleMCCSControl 1.5.3

com.apple.driver.AppleThunderboltIP 3.1.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 40

com.apple.filesystems.hfs.kext 407.30.1

com.apple.driver.AppleSDXC 1.7.6

com.apple.iokit.AppleBCM5701Ethernet 10.3.1

com.apple.driver.AirPort.BrcmNIC 1220.28.1a3

com.apple.driver.AppleAHCIPort 329

com.apple.driver.AppleACPIButtons 6.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 6.1

com.apple.driver.AppleAPIC 1.7

com.apple.nke.applicationfirewall 183

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.IOBufferCopyEngineTest 1

com.apple.driver.AppleBluetoothHIDKeyboard 203

com.apple.driver.IOBluetoothHIDDriver 6.0.2f2

com.apple.driver.AppleHIDKeyboard 203

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 280.12

com.apple.kext.OSvKernDSPLib 526

com.apple.iokit.IOSerialFamily 11

com.apple.driver.AppleSSE 1.0

com.apple.AppleGPUWrangler 3.16.2

com.apple.driver.AppleHDAController 280.12

com.apple.iokit.IOHDAFamily 280.12

com.apple.iokit.IOAudioFamily 206.5

com.apple.vecLib.kext 1.2.0

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 517.22

com.apple.driver.AppleSMBusPCI 1.0.14d1

com.apple.AppleGraphicsDeviceControl 3.16.21

com.apple.iokit.IOAcceleratorFamily2 376.6

com.apple.iokit.IOSurface 209.2.2

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 6.0.0d8

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.AppleSMBusController 1.0.18d1

com.apple.iokit.IOGraphicsFamily 517.22

com.apple.driver.AppleThunderboltEDMSink 4.1.2

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 6.0.2f2

com.apple.iokit.IOBluetoothHostControllerUSBTransport 6.0.2f2

com.apple.iokit.IOBluetoothHostControllerTransport 6.0.2f2

com.apple.iokit.IOBluetoothFamily 6.0.2f2

com.apple.driver.usb.IOUSBHostHIDDevice 1.2

com.apple.driver.usb.AppleUSBHub 1.2

com.apple.driver.usb.networking 5.0.0

com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2

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.CoreStorage 546

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

com.apple.iokit.IOAHCIBlockStorage 301.40.2

com.apple.driver.AppleThunderboltNHI 4.5.6

com.apple.iokit.IOThunderboltFamily 6.6.3

com.apple.iokit.IOEthernetAVBController 1.1.0

com.apple.iokit.IO80211Family 1200.12.2

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.driver.corecapture 1.0.4

com.apple.iokit.IOAHCIFamily 288

com.apple.driver.usb.AppleUSBXHCIPCI 1.2

com.apple.driver.usb.AppleUSBXHCI 1.2

com.apple.driver.usb.AppleUSBHostPacketFilter 1.0

com.apple.iokit.IOUSBFamily 900.4.1

com.apple.driver.AppleUSBHostMergeProperties 1.2

com.apple.driver.AppleEFINVRAM 2.1

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.driver.AppleEFIRuntime 2.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleEffaceableStorage 1.0

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleUSBTDM 439.30.4

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.iokit.IOUSBMassStorageDriver 140.30.1

com.apple.iokit.IOSCSIBlockCommandsDevice 404.30.2

com.apple.iokit.IOSCSIArchitectureModelFamily 404.30.2

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.KernelRelayHost 1

com.apple.iokit.IOUSBHostFamily 1.2

com.apple.driver.usb.AppleUSBCommon 1.0

com.apple.driver.AppleBusPowerController 1.0

com.apple.driver.AppleSEPManager 1.0.1

com.apple.driver.IOSlaveProcessor 1

com.apple.iokit.IOBufferCopyEngineFamily 1

com.apple.driver.DiskImages 480.30.2

com.apple.iokit.IOStorageFamily 2.1

com.apple.iokit.IOReportFamily 31

com.apple.iokit.IOTimeSyncFamily 650.5

com.apple.iokit.IONetworkingFamily 3.4

com.apple.driver.AppleACPIPlatform 6.1

com.apple.driver.AppleSMCRTC 1.0

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.pthread 1

com.apple.kec.corecrypto 1.0

com.apple.kec.Libm 1


Model: iMac14,2, BootROM IM142.0123.B00, 4 processors, Intel Core i7, 3,5 GHz, 16 GB, SMC 2.15f7

Graphics: NVIDIA GeForce GTX 780M, NVIDIA GeForce GTX 780M, PCIe, 4 GB

Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3831554738454655352D474E4C2D46

Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3831554738454655352D474E4C2D46

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x111), Broadcom BCM43xx 1.0 (

Bluetooth: Version 6.0.2f2, 3 services, 27 devices, 1 incoming serial ports

Network Service: Ethernet, Ethernet, en0

PCI Card: pci1b21,625, AHCI Controller, Thunderbolt@193,0,0

Serial ATA Device: APPLE SSD SD0128F, 121,33 GB

Serial ATA Device: G-RAID with Thunderbolt, 16 TB

Serial ATA Device: APPLE HDD ST1000DM003, 1 TB

USB Device: USB 3.0 Bus

USB Device: BRCM20702 Hub

USB Device: Bluetooth USB Host Controller

USB Device: FaceTime HD Camera (Built-in)

USB Device: Wacom Intuos Pro M

USB Device: USB Receiver

Thunderbolt Bus: iMac, Apple Inc., 23.10

Thunderbolt Device: G-RAID with Thunderbolt, G-Technology, 1, 25.1

iMac, macOS High Sierra (10.13.3)

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Mar 12, 2018 1:53 PM in response to CoolDudePT In response to CoolDudePT

Disconnect all third-party peripherals (Wacom and G-RAID). You have some third-party software installed that could cause kernel panics. They are from:

  1. CUDA
  2. Paragon
  3. Telestream
  4. Ambrosia
  5. MalwareBytes
  6. Nvidia Web GeForce driver

The installed extensions are listed below:

  1. com.nvidia.CUDA 1.1.0
  2. com.paragon-software.filesystems.ntfs 266.3.14
  3. net.telestream.driver.TelestreamAudio 1.1.1
  4. com.AmbrosiaSW.AudioSupport 4.1.4
  5. com.malwarebytes.mbam.rtprotection 3.2.35
  6. com.nvidia.web.GeForceWeb 10.2.9
  7. com.nvidia.web.NVDAGK100HalWeb 10.2.9
  8. com.nvidia.web.NVDAResmanWeb 10.2.9

I suggest you start by booting the computer into Safe Mode which should disable these extensions as well as clear some caches. The caches will be rebuilt when you restart the computer normally. This is all slower than normal startup so please be patient. Safe mode does not disable certain plug-ins or Preferences installed. If you have files loaded into Login Items of Users & Groups then you should remove them for now. Please operate as well as possible in safe mode so you can test the system enough to find out if this stops the kernel panics.

In the event that the panics continue even in safe mode then try the following:

Be sure to backup your files before proceeding if possible.

  1. Use Apple Hardware Test to see if there is any hardware malfunction.
  2. Repair the disk by booting from the Recovery HD. Immediately after the chime hold down the Command and R keys until the Utility Menu appears. Choose Disk Utility and click on the Continue button. Select the indented (usually, Macintosh HD) volume entry from the side list. Click on the First Aid button in the toolbar. Wait for the Done button to appear. Quit Disk Utility and return to the Utility Menu. Restart the computer from the Apple Menu.
  3. Repair permissions on the Home folder: Resolve issues caused by changing the permissions of items in your home folder.
  4. Create a New User Account Open Users & Groups preferences. Click on the lock icon and enter your Admin password when prompted. On the left under Current User click on the Add [+] button under Login Options. Setup a new Admin user account. Upon completion log out of your current account then log into the new account. If your problems cease, then consider switching to the new account and transferring your files to it - Transferring files from one User Account to another.
  5. Download and install the OS X El Capitan 10.11.6 Combo Update or 10.12.6 Combo Update or Download macOS High Sierra 10.13.3 Combo Update as needed.
  6. Reinstall OS X by booting from the Recovery HD using the Command and R keys. When the Utility Menu appears select Reinstall OS X then click on the Continue button.
  7. Erase and Install OS X Restart the computer. Immediately after the chime hold down the Command and R keys until the Apple logo appears. When the Utility Menu appears:
  1. Select Disk Utility from the Utility Menu and click on Continue button.
  2. When Disk Utility loads select the drive (out-dented entry) from the Device list.
  3. Click on the Erase icon in Disk Utility's toolbar. A panel will drop down.
  4. Set the Format type to APFS (for SSDs only) or Mac OS Extended (Journaled.)
  5. Click on the Apply button, then wait for the Done button to activate and click on it.
  6. Quit Disk Utility and return to the Utility Menu.
  7. Select Reinstall OS X and click on the Continue button.

Mar 12, 2018 1:53 PM

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User profile for user: CoolDudePT

Question: Reason for this kernel panic?