My Macbook Pro mid 2014 has recently just "restarted because of an error".

The first time it happened (about 2 weeks ago), I wasn't even working on it - it just happened while it was sleeping.

The second time, while I was away, but it was awake.

Now it happened while I was working on it. Safari was open and it was not working hard.

Why is it doing it and what can I do to isolate the problem further?

Here are some specs:

MacBook Pro (Retina, 13-inch, Mid 2014)

2,6 GHz Intel Core i5

8 GB 1600 MHz DDR3

This was the report that was generated (if it helps)?

Wed Mar 16 15:15:11 2016

*** Panic Report ***

panic(cpu 1 caller 0xffffff801ee16df2): Kernel trap at 0xffffff7fa0dd1038, type 13=general protection, registers:

CR0: 0x0000000080010033, CR2: 0x00000001bcea7000, CR3: 0x00000001b333c0be, CR4: 0x00000000001627e0

RAX: 0xffffff804bfe0800, RBX: 0xffffff803306e000, RCX: 0x0000000000000001, RDX: 0x7fffffffffffffff

RSP: 0xffffff8128ed3b80, RBP: 0xffffff8128ed3bc0, RSI: 0x0000000000000002, RDI: 0xffffff804bfdb800

R8: 0x00000000000002a6, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0xffffff80446123c0

R12: 0xffffff801f512f48, R13: 0xffffff801f429750, R14: 0xffffff804bfdb800, R15: 0xffffff804bfdf380

RFL: 0x0000000000010282, RIP: 0xffffff7fa0dd1038, CS: 0x0000000000000008, SS: 0x0000000000000010

Fault CR2: 0x00000001bcea7000, Error code: 0x0000000000000000, Fault CPU: 0x1

Backtrace (CPU 1), Frame : Return Address

0xffffff8120d35e10 : 0xffffff801ed2ad21

0xffffff8120d35e90 : 0xffffff801ee16df2

0xffffff8120d36050 : 0xffffff801ee33ca3

0xffffff8120d36070 : 0xffffff7fa0dd1038

0xffffff8128ed3bc0 : 0xffffff7fa0d30a68

0xffffff8128ed3c00 : 0xffffff7fa0d3fb95

0xffffff8128ed3c30 : 0xffffff7fa0d31479

0xffffff8128ed3c50 : 0xffffff7fa0d966a8

0xffffff8128ed3c70 : 0xffffff7fa0d312dc

0xffffff8128ed3ca0 : 0xffffff7fa0d3f6a1

0xffffff8128ed3d00 : 0xffffff801f2b6631

0xffffff8128ed3d50 : 0xffffff801f2fde62

0xffffff8128ed3dc0 : 0xffffff801ede17de

0xffffff8128ed3e10 : 0xffffff801ed2ef8c

0xffffff8128ed3e40 : 0xffffff801ed139f3

0xffffff8128ed3e90 : 0xffffff801ed2429d

0xffffff8128ed3f10 : 0xffffff801ee0231a

0xffffff8128ed3fb0 : 0xffffff801ee344c6

Kernel Extensions in backtrace:

com.apple.iokit.IOAcceleratorFamily2(156.16)[1259B80F-E4C5-3BC9-BED5-65B42289E8 C0]@0xffffff7fa0d15000->0xffffff7fa0d83fff

dependency: com.apple.iokit.IOPCIFamily(2.9)[05578B0B-C99C-3A87-9F3E-B4746D19CEF4]@0xffffff 7f9f524000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[8922721D-5517-3883-BD3A-57422D0244A0]@0 xffffff7f9fdfd000

com.apple.driver.AppleIntelHD5000Graphics(10.0.6)[193BB947-B51B-3D53-817C-34CEE 56B9E0E]@0xffffff7fa0d92000->0xffffff7fa0df1fff

dependency: com.apple.iokit.IOSurface(97.4)[A4AE35B7-0C17-38F2-AD0D-A4C4B40196FB]@0xffffff7 f9fcd5000

dependency: com.apple.iokit.IOPCIFamily(2.9)[05578B0B-C99C-3A87-9F3E-B4746D19CEF4]@0xffffff 7f9f524000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[8922721D-5517-3883-BD3A-57422D0244A0]@0 xffffff7f9fdfd000

dependency: com.apple.iokit.IOAcceleratorFamily2(156.16)[1259B80F-E4C5-3BC9-BED5-65B42289E8 C0]@0xffffff7fa0d15000

BSD process name corresponding to current thread: com.apple.WebKit

Mac OS version:

14F1605

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: 0x000000001ea00000

Kernel text base: 0xffffff801ec00000

__HIB text base: 0xffffff801eb00000

System model name: MacBookPro11,1 (Mac-189A3D4F975D5FFC)

System uptime in nanoseconds: 159646423794131

last loaded kext at 136832719832947: com.apple.iokit.SCSITaskUserClient 3.7.5 (addr 0xffffff7fa144e000, size 36864)

last unloaded kext at 137015755088925: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7fa1446000, size 16384)

loaded kexts:

org.virtualbox.kext.VBoxNetAdp 4.3.16

org.virtualbox.kext.VBoxNetFlt 4.3.16

org.virtualbox.kext.VBoxUSB 4.3.16

org.virtualbox.kext.VBoxDrv 4.3.16

com.apple.filesystems.smbfs 3.0.2

com.apple.driver.AppleBluetoothMultitouch 85.3

com.apple.filesystems.autofs 3.0

com.apple.driver.AudioAUUC 1.70

com.apple.iokit.IOBluetoothSerialManager 4.3.6f3

com.apple.driver.AGPM 110.19.6

com.apple.driver.ApplePlatformEnabler 2.2.0d4

com.apple.driver.X86PlatformShim 1.0.0

com.apple.driver.AppleHDA 272.18.3

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleLPC 1.7.3

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.AppleCameraInterface 5.36.0

com.apple.driver.AppleSMCLMU 2.0.7d0

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleIntelHD5000Graphics 10.0.6

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.driver.AppleIntelFramebufferAzul 10.0.6

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.6f3

com.apple.driver.AppleBacklight 170.7.4

com.apple.driver.AppleMCCSControl 1.2.12

com.apple.driver.AppleUSBTCButtons 240.2

com.apple.driver.AppleUSBTCKeyboard 240.2

com.apple.driver.AppleUSBCardReader 3.5.5

com.apple.driver.AppleUSBHub 705.4.2

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 36

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.7.1

com.apple.driver.AppleAHCIPort 3.1.2

com.apple.driver.AirPort.Brcm4360 930.37.3

com.apple.driver.AppleUSBXHCI 710.4.11

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleACPIButtons 3.1

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.nke.applicationfirewall 161

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleBluetoothHIDKeyboard 176.2

com.apple.driver.AppleHIDKeyboard 176.2

com.apple.driver.IOBluetoothHIDDriver 4.3.6f3

com.apple.driver.AppleMultitouchDriver 264.6

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 272.18.3

com.apple.kext.OSvKernDSPLib 1.15

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.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.iokit.IOSurface 97.4

com.apple.AppleGraphicsDeviceControl 3.10.25

com.apple.iokit.IOAcceleratorFamily2 156.16

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.6f3

com.apple.iokit.IOBluetoothFamily 4.3.6f3

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.iokit.IOSerialFamily 11

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.driver.AppleUSBMultitouch 245.2

com.apple.iokit.IOUSBHIDDriver 705.4.0

com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.5

com.apple.iokit.IOUSBMassStorageClass 3.7.2

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.driver.CoreStorage 471.30.1

com.apple.iokit.IOAHCIFamily 2.7.5

com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

com.apple.driver.AppleThunderboltNHI 3.1.7

com.apple.iokit.IOThunderboltFamily 4.2.2

com.apple.iokit.IO80211Family 730.60

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

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.corecrypto 1.0

com.apple.kec.Libm 1

com.apple.kec.pthread 1