This has been happening lately, I just attempted upgrading to Parallels 11 to resolve the issue but same errors. Appears to be happening when Windows 7 is writing to the disk such as Windows Updates or Outlook Updating. Below is the crash report that has been generated at least 6+ times today. Thu Dec 3 11:08:43 2015 *** Panic Report *** panic(cpu 2 caller 0xffffff800a3d6bba): Kernel trap at 0xffffff800a64cfec, type 13=general protection, registers: CR0: 0x000000008001003b, CR2: 0x00007f986486e000, CR3: 0x000000000d599000, CR4: 0x00000000001627e0 RAX: 0xdeadbeefdeadbeef, RBX: 0xffffff804a691090, RCX: 0xffffffffef37a3cc, RDX: 0x0000000000000001 RSP: 0xffffff81f4cf3900, RBP: 0xffffff81f4cf3980, RSI: 0x0000000000000002, RDI: 0xffffff8029217f80 R8: 0xffffff8029215000, R9: 0xffffff8048a85620, R10: 0x0000000000000238, R11: 0xffffff81eb2c11bc R12: 0xffffff8048a85000, R13: 0x0000000000000001, R14: 0xffffff8048a85620, R15: 0xffffff804a691040 RFL: 0x0000000000010282, RIP: 0xffffff800a64cfec, CS: 0x0000000000000008, SS: 0x0000000000000010 Fault CR2: 0x00007f986486e000, Error code: 0x0000000000000000, Fault CPU: 0x2, PL: 0 Backtrace (CPU 2), Frame : Return Address 0xffffff81e9865df0 : 0xffffff800a2e5307 0xffffff81e9865e70 : 0xffffff800a3d6bba 0xffffff81e9866050 : 0xffffff800a3f4313 0xffffff81e9866070 : 0xffffff800a64cfec 0xffffff81f4cf3980 : 0xffffff800a649d38 0xffffff81f4cf3d90 : 0xffffff800a636717 0xffffff81f4cf3de0 : 0xffffff800a637c53 0xffffff81f4cf3f40 : 0xffffff800a56d8cc 0xffffff81f4cf3fb0 : 0xffffff800a3d15d7 BSD process name corresponding to current thread: kernel_task Mac OS version: 15B42 Kernel version: Darwin Kernel Version 15.0.0: Sat Sep 19 15:53:46 PDT 2015; root:xnu-3247.10.11~1/RELEASE_X86_64 Kernel UUID: AB5FC1B4-12E7-311E-8E6F-9023985D8C1D Kernel slide: 0x000000000a000000 Kernel text base: 0xffffff800a200000 __HIB text base: 0xffffff800a100000 System model name: MacBookPro11,2 (Mac-3CBD00234E554E41) System uptime in nanoseconds: 363390977173 last loaded kext at 282577565294: com.parallels.kext.vnic 11.1.1 32312 (addr 0xffffff7f8cf7b000, size 32768) loaded kexts: com.parallels.kext.vnic 11.1.1 32312 com.parallels.kext.netbridge 11.1.1 32312 com.parallels.kext.hypervisor 11.1.1 32312 com.parallels.kext.usbconnect 11.1.1 32312 com.fortinet.fct.kext.fctapnke 1 com.fortinet.fct.kext.avkern 1.0.1 com.apple.filesystems.smbfs 3.0.0 com.apple.filesystems.msdosfs 1.10 com.apple.driver.AppleBluetoothMultitouch 90.3 com.apple.driver.AudioAUUC 1.70 com.apple.filesystems.autofs 3.0 com.apple.driver.AGPM 110.20.21 com.apple.driver.ApplePlatformEnabler 2.5.1d0 com.apple.driver.X86PlatformShim 1.0.0 com.apple.driver.AppleGraphicsDevicePolicy 3.7.7 com.apple.driver.AppleUpstreamUserClient 3.6.1 com.apple.driver.AppleOSXWatchdog 1 com.apple.driver.AppleHDAHardwareConfigDriver 272.50.31 com.apple.driver.AppleHDA 272.50.31 com.apple.driver.pmtelemetry 1 com.apple.iokit.IOUserEthernet 1.0.1 com.apple.iokit.IOBluetoothSerialManager 4.4.2f1 com.apple.driver.AppleIntelHD5000Graphics 10.1.0 com.apple.Dont_Steal_Mac_OS_X 7.0.0 com.apple.driver.AppleBacklight 170.8.1 com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0 com.apple.driver.AppleHV 1 com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.4.2f1 com.apple.driver.AppleThunderboltIP 3.0.8 com.apple.driver.AppleLPC 3.1 com.apple.driver.AppleIntelFramebufferAzul 10.1.0 com.apple.driver.AppleCameraInterface 5.41.0 com.apple.driver.AppleFIVRDriver 4.1.0 com.apple.driver.AppleSMCLMU 208 com.apple.driver.AppleMuxControl 3.11.33b1 com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0 com.apple.driver.AppleMCCSControl 1.2.13 com.apple.iokit.IOBluetoothUSBDFU 4.4.2f1 com.apple.iokit.SCSITaskUserClient 3.7.7 com.apple.driver.AppleUSBStorageCoexistentDriver 3.7.1 com.apple.driver.AppleUSBCardReader 3.7.1 com.apple.driver.AppleUSBTCButtons 245.4 com.apple.driver.AppleUSBTCKeyEventDriver 245.4 com.apple.driver.AppleUSBTCKeyboard 245.4 com.apple.driver.CoreStorageFsck 517 com.apple.driver.AppleFileSystemDriver 3.0.1 com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1 com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0 com.apple.BootCache 37 com.apple.iokit.IOAHCIBlockStorage 2.8.0 com.apple.driver.AppleAHCIPort 3.1.5 com.apple.iokit.AppleBCM5701Ethernet 10.1.11 com.apple.driver.AirPort.Brcm4360 1010.14.1a4 com.apple.driver.AppleSmartBatteryManager 161.0.0 com.apple.driver.AppleACPIButtons 4.0 com.apple.driver.AppleRTC 2.0 com.apple.driver.AppleHPET 1.8 com.apple.driver.AppleSMBIOS 2.1 com.apple.driver.AppleACPIEC 4.0 com.apple.driver.AppleAPIC 1.7 com.apple.nke.applicationfirewall 163 com.apple.security.quarantine 3 com.apple.security.TMSafetyNet 8 com.apple.driver.IOBluetoothHIDDriver 4.4.2f1 com.apple.driver.AppleMultitouchDriver 304.9 com.apple.driver.AppleHIDTransport 5 com.apple.kext.triggers 1.0 com.apple.driver.DspFuncLib 272.50.31 com.apple.kext.OSvKernDSPLib 525 com.apple.iokit.IOSerialFamily 11 com.apple.iokit.IOSurface 108.0.1 com.apple.driver.IOPlatformPluginLegacy 1.0.0 com.apple.driver.CoreCaptureResponder 1 com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.4.2f1 com.apple.iokit.IOBluetoothFamily 4.4.2f1 com.apple.driver.AppleHDAController 272.50.31 com.apple.iokit.IOHDAFamily 272.50.31 com.apple.iokit.IOAudioFamily 204.1 com.apple.vecLib.kext 1.2.0 com.apple.driver.AppleSMBusPCI 1.0.14d1 com.apple.AppleGraphicsDeviceControl 3.11.33b1 com.apple.iokit.IOAcceleratorFamily2 203.10 com.apple.driver.AppleBacklightExpert 1.1.0 com.apple.iokit.IONDRVSupport 2.4.1 com.apple.driver.AppleGraphicsControl 3.11.33b1 com.apple.driver.X86PlatformPlugin 1.0.0 com.apple.driver.IOPlatformPluginFamily 6.0.0d7 com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0 com.apple.driver.AppleSMC 3.1.9 com.apple.driver.AppleSMBusController 1.0.14d1 com.apple.iokit.IOGraphicsFamily 2.4.1 com.apple.driver.AppleThunderboltEDMSink 4.1.1 com.apple.driver.AppleThunderboltDPOutAdapter 4.1.2 com.apple.driver.usb.IOUSBHostHIDDevice 1.0.1 com.apple.iokit.IOUSBMassStorageClass 4.0.0 com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.7 com.apple.iokit.IOUSBMassStorageDriver 1.0.0 com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.7 com.apple.driver.usb.AppleUSBHub 1.0.1 com.apple.driver.AppleUSBMultitouch 250.4 com.apple.iokit.IOUSBHIDDriver 900.4.1 com.apple.driver.usb.AppleUSBHostCompositeDevice 1.0.1 com.apple.driver.AppleThunderboltDPInAdapter 4.1.2 com.apple.driver.AppleThunderboltDPAdapterFamily 4.1.2 com.apple.driver.AppleThunderboltPCIUpAdapter 2.0.2 com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2 com.apple.driver.CoreStorage 517 com.apple.driver.AppleUSBMergeNub 900.4.1 com.apple.driver.AppleXsanScheme 3 com.apple.iokit.IOAHCIFamily 2.8.0 com.apple.iokit.IOEthernetAVBController 1.0.3b3 com.apple.driver.AppleThunderboltNHI 4.0.4 com.apple.iokit.IOThunderboltFamily 5.0.6 com.apple.iokit.IO80211Family 1101.24 com.apple.driver.mDNSOffloadUserClient 1.0.1b8 com.apple.iokit.IONetworkingFamily 3.2 com.apple.driver.corecapture 1.0.4 com.apple.driver.usb.AppleUSBXHCIPCI 1.0.1 com.apple.driver.usb.AppleUSBXHCI 1.0.1 com.apple.iokit.IOUSBFamily 900.4.1 com.apple.iokit.IOUSBHostFamily 1.0.1 com.apple.driver.AppleUSBHostMergeProperties 1.0.1 com.apple.driver.AppleEFINVRAM 2.0 com.apple.iokit.IOHIDFamily 2.0.0 com.apple.driver.AppleEFIRuntime 2.0 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 415 com.apple.iokit.IOStorageFamily 2.1 com.apple.iokit.IOReportFamily 31 com.apple.driver.AppleFDEKeyStore 28.30 com.apple.driver.AppleACPIPlatform 4.0 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: MacBookPro11,2, BootROM MBP112.0138.B16, 4 processors, Intel Core i7, 2 GHz, 16 GB, SMC 2.18f15 Graphics: Intel Iris Pro, Intel Iris Pro, Built-In Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533641465238412D50422020 Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533641465238412D50422020 AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x134), Broadcom BCM43xx 1.0 (7.21.94.29.1a4) Bluetooth: Version 4.4.2f1 16391, 3 services, 27 devices, 1 incoming serial ports Network Service: Thunderbolt Ethernet, Ethernet, en3 PCI Card: Apple 57762-A0, Ethernet Controller, Thunderbolt@195,0,0 Serial ATA Device: APPLE SSD SM0256F, 251 GB USB Device: USB 3.0 Bus USB Device: Card Reader USB Device: Apple Internal Keyboard / Trackpad USB Device: BRCM20702 Hub USB Device: Bluetooth USB Host Controller USB Device: USB2.0 Hub USB Device: asmedia USB Device: USB2.0 Hub USB Device: USB 2.0 Hub Thunderbolt Bus: MacBook Pro, Apple Inc., 17.1 Thunderbolt Device: Thunderbolt to Gigabit Ethernet Adapter, Apple Inc., 1, 5.5
VPN might be responsible in some way, there is a similar crash that occurs for virtualbox+fortinet user: https://forum.fortinet.com/m/tm.aspx?m=128036&p=9
