My computer gave off an error message and said my computer shut down because of an error. I've never had this happen before. Thanks.
This is the report:
Anonymous UUID: 44BD82CC-9179-81B5-1CE5-0ABB8A2AA9BF
Fri Nov 8 14:15:53 2019
*** Panic Report ***
panic(cpu 1 caller 0xffffff80086985ce): Preemption level underflow, possible cause unlocking an unlocked mutex or spinlock
Backtrace (CPU 1), Frame : Return Address
0xffffff8111fdbc20 : 0xffffff80086e850c
0xffffff8111fdbca0 : 0xffffff80086985ce
0xffffff8111fdbcb0 : 0xffffff80086982ef
0xffffff8111fdbcc0 : 0xffffff8008ce6a00
0xffffff8111fdbcf0 : 0xffffff80087b5fa7
0xffffff8111fdbd30 : 0xffffff80086ed73f
0xffffff8111fdbd90 : 0xffffff80086c9f81
0xffffff8111fdbde0 : 0xffffff80086ede56
0xffffff8111fdbe20 : 0xffffff80086d668d
0xffffff8111fdbea0 : 0xffffff80086df591
0xffffff8111fdbee0 : 0xffffff80086dd41b
0xffffff8111fdbf10 : 0xffffff80087e97c8
0xffffff8111fdbfb0 : 0xffffff8008699d56
BSD process name corresponding to current thread: com.apple.WebKit
Mac OS version:
16G1314
Kernel version:
Darwin Kernel Version 16.7.0: Tue Jan 30 11:27:06 PST 2018; root:xnu-3789.73.11~1/RELEASE_X86_64
Kernel UUID: 50C7E8E4-330F-3D92-B9D1-2B4900417AA8
Kernel slide: 0x0000000008400000
Kernel text base: 0xffffff8008600000
__HIB text base: 0xffffff8008500000
System model name: MacBookPro12,1 (Mac-E43C1C25D4880AD6)
System uptime in nanoseconds: 302299555689555
last loaded kext at 278662817838060: com.apple.driver.usb.cdc 5.0.0 (addr 0xffffff7f8b77a000, size 28672)
last unloaded kext at 279871151189208: com.apple.driver.usb.cdc 5.0.0 (addr 0xffffff7f8b77a000, size 28672)
loaded kexts:
com.apple.filesystems.autofs 3.0
com.apple.driver.AudioAUUC 1.70
com.apple.iokit.IOBluetoothSerialManager 5.0.5f1
com.apple.driver.AppleUpstreamUserClient 3.6.4
com.apple.driver.AppleGraphicsDevicePolicy 3.14.49
com.apple.driver.AppleHDA 279.48
com.apple.driver.X86PlatformShim 1.0.0
com.apple.driver.AGPM 110.23.17
com.apple.driver.ApplePlatformEnabler 2.7.0d0
com.apple.driver.pmtelemetry 1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleIntelBDWGraphics 10.2.5
com.apple.driver.AppleThunderboltIP 3.0.8
com.apple.driver.AppleBacklight 170.9.20
com.apple.driver.AppleHV 1
com.apple.iokit.BroadcomBluetooth20703USBTransport 5.0.5f1
com.apple.driver.AppleCameraInterface 5.60.0
com.apple.driver.AppleLPC 3.1
com.apple.driver.AppleOSXWatchdog 1
com.apple.driver.AppleMCCSControl 1.3.4
com.apple.driver.AppleSMCLMU 208
com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0
com.apple.driver.AppleIntelBDWGraphicsFramebuffer 10.2.5
com.apple.driver.AppleUSBCardReader 404.50.6
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.IOAHCIBlockStorage 295.20.1
com.apple.driver.AppleAHCIPort 326.60.1
com.apple.driver.AppleTopCaseHIDEventDriver 114
com.apple.driver.AirPort.Brcm4360 1152.2.1a2
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 5.0
com.apple.driver.AppleRTC 2.0
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.usb.IOUSBHostHIDDevice 1.1
com.apple.driver.AppleUSBAudio 308.7
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.driver.AppleSSE 1.0
com.apple.iokit.IOSurface 159.12
com.apple.driver.AppleBacklightExpert 1.1.0
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.driver.AppleSMBusController 1.0.18d1
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.driver.X86PlatformPlugin 1.0.0
com.apple.driver.IOPlatformPluginFamily 6.0.0d8
com.apple.iokit.IOSerialFamily 11
com.apple.driver.AppleSMC 3.1.9
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.AppleGraphicsDeviceControl 3.14.49
com.apple.iokit.IOAcceleratorFamily2 311.16.2
com.apple.iokit.IOGraphicsFamily 515.3
com.apple.iokit.IOSCSIBlockCommandsDevice 394.50.1
com.apple.iokit.IOUSBMassStorageDriver 131.60.1
com.apple.iokit.IOSCSIArchitectureModelFamily 394.50.1
com.apple.driver.usb.networking 5.0.0
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.1
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleThunderboltDPInAdapter 5.0.2
com.apple.driver.AppleThunderboltDPAdapterFamily 5.0.2
com.apple.driver.AppleThunderboltPCIDownAdapter 2.1.3
com.apple.iokit.IOAHCIFamily 288
com.apple.driver.AppleHIDKeyboard 199
com.apple.driver.AppleMultitouchDriver 368.16
com.apple.driver.AppleInputDeviceSupport 76.7
com.apple.driver.AppleHSSPIHIDDriver 49
com.apple.driver.AppleThunderboltNHI 4.5.4
com.apple.iokit.IOThunderboltFamily 6.5.7
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.AppleHSSPISupport 49
com.apple.driver.AppleIntelLpssSpiController 3.0.60
com.apple.driver.AppleIntelLpssGspi 3.0.60
com.apple.driver.AppleIntelLpssDmac 3.0.60
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.AppleUSBHostMergeProperties 1.1
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 444.50.17
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: MacBookPro12,1, BootROM MBP121.0175.B00, 2 processors, Intel Core i5, 2.7 GHz, 8 GB, SMC 2.28f7
Graphics: Intel Iris Graphics 6100, Intel Iris Graphics 6100, Built-In
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1867 MHz, 0x02FE, 0x4544464132333241324D412D4A442D460000
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1867 MHz, 0x02FE, 0x4544464132333241324D412D4A442D460000
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x133), Broadcom BCM43xx 1.0 (7.21.171.133.1a2)
Bluetooth: Version 5.0.5f1, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0128G, 121.33 GB
USB Device: USB 3.0 Bus
USB Device: Bluetooth USB Host Controller
USB Device: Logitech Speaker Lapdesk N550
Thunderbolt Bus: MacBook Pro, Apple Inc., 27.1
