Anonymous UUID:       [removed]

Thu Dec 19 16:33:02 2013
panic(cpu 0 caller 0xffffff8018cd143e): Preemption level underflow, possible cause unlocking an unlocked mutex or spinlock
Backtrace (CPU 0), Frame : Return Address
0xffffff8091d136d0 : 0xffffff8018c22f69 
0xffffff8091d13750 : 0xffffff8018cd143e 
0xffffff8091d13760 : 0xffffff8018cd11cf 
0xffffff8091d13770 : 0xffffff8018e4ce14 
0xffffff8091d137b0 : 0xffffff8018e2bb33 
0xffffff8091d138d0 : 0xffffff8018f30aac 
0xffffff8091d139a0 : 0xffffff8018f14519 
0xffffff8091d13dc0 : 0xffffff8018f2b6cc 
0xffffff8091d13e20 : 0xffffff8018f2b308 
0xffffff8091d13e60 : 0xffffff8018f2afea 
0xffffff8091d13f20 : 0xffffff8018c4a15a 
0xffffff8091d13fb0 : 0xffffff8018cd6aa7 

BSD process name corresponding to current thread: kernel_task

Mac OS version:
13B42

Kernel version:
Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64
Kernel UUID: [removed]
Kernel slide:     0x0000000018a00000
Kernel text base: 0xffffff8018c00000
System model name: MacBookAir3,1 (Mac-[removed])

System uptime in nanoseconds: 166073560764
last loaded kext at 20978052124: com.cisco.kext.acsock	1.1.0 (addr 0xffffff7f9af41000, size 61440)
loaded kexts:
com.cisco.kext.acsock	1.1.0
org.virtualbox.kext.VBoxNetAdp	4.3.4
org.virtualbox.kext.VBoxNetFlt	4.3.4
org.virtualbox.kext.VBoxUSB	4.3.4
com.bresink.driver.BRESINKx86Monitoring	9.0
org.virtualbox.kext.VBoxDrv	4.3.4
com.apple.driver.AudioAUUC	1.60
com.apple.filesystems.autofs	3.0
com.apple.driver.AppleHWSensor	1.9.5d0
com.apple.iokit.IOBluetoothSerialManager	4.2.0f6
com.apple.driver.AGPM	100.14.11
com.apple.driver.AppleTyMCEDriver	1.0.2d2
com.apple.driver.ApplePlatformEnabler	2.0.9d1
com.apple.driver.AppleMikeyHIDDriver	124
com.apple.driver.AppleHDAHardwareConfigDriver	2.5.3fc1
com.apple.driver.AppleHDA	2.5.3fc1
com.apple.driver.AppleMikeyDriver	2.5.3fc1
com.apple.driver.AppleMuxControl	3.4.12
com.apple.driver.AppleBacklight	170.3.5
com.apple.GeForceTesla	8.1.8
com.apple.driver.AppleUpstreamUserClient	3.5.13
com.apple.driver.AppleMCCSControl	1.1.12
com.apple.iokit.IOBluetoothUSBDFU	4.2.0f6
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport	4.2.0f6
com.apple.iokit.IOUserEthernet	1.0.0d1
com.apple.Dont_Steal_Mac_OS_X	7.0.0
com.apple.driver.AppleHWAccess	1
com.apple.driver.ACPI_SMC_PlatformPlugin	1.0.0
com.apple.driver.AppleLPC	1.7.0
com.apple.nvidia.NVDAStartup	8.1.8
com.apple.driver.AppleUSBTCButtons	240.2
com.apple.driver.AppleUSBTCKeyEventDriver	240.2
com.apple.driver.AppleUSBTCKeyboard	240.2
com.apple.driver.AppleFileSystemDriver	3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless	1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib	1.0.0d1
com.apple.BootCache	35
com.apple.driver.XsanFilter	404
com.apple.iokit.IOAHCIBlockStorage	2.4.0
com.apple.driver.AppleUSBHub	650.4.4
com.apple.driver.AirPort.Brcm4331	700.20.22
com.apple.driver.AppleAHCIPort	2.9.5
com.apple.driver.AppleUSBOHCI	650.4.1
com.apple.driver.AppleUSBEHCI	650.4.1
com.apple.driver.AppleSmartBatteryManager	161.0.0
com.apple.driver.AppleRTC	2.0
com.apple.driver.AppleHPET	1.8
com.apple.driver.AppleACPIButtons	2.0
com.apple.driver.AppleSMBIOS	2.0
com.apple.driver.AppleACPIEC	2.0
com.apple.driver.AppleAPIC	1.7
com.apple.driver.AppleIntelCPUPowerManagementClient	216.0.0
com.apple.nke.applicationfirewall	153
com.apple.security.quarantine	3
com.apple.driver.AppleIntelCPUPowerManagement	216.0.0
com.apple.kext.triggers	1.0
com.apple.iokit.IOSerialFamily	10.0.7
com.apple.iokit.IOSCSIArchitectureModelFamily	3.6.0
com.apple.AppleGraphicsDeviceControl	3.4.12
com.apple.driver.DspFuncLib	2.5.3fc1
com.apple.vecLib.kext	1.0.0
com.apple.iokit.IOAudioFamily	1.9.4fc11
com.apple.kext.OSvKernDSPLib	1.14
com.apple.driver.AppleHDAController	2.5.3fc1
com.apple.iokit.IOHDAFamily	2.5.3fc1
com.apple.driver.AppleSMBusPCI	1.0.12d1
com.apple.driver.AppleGraphicsControl	3.4.12
com.apple.driver.AppleBacklightExpert	1.0.4
com.apple.driver.AppleSMBusController	1.0.11d1
com.apple.iokit.IOBluetoothHostControllerUSBTransport	4.2.0f6
com.apple.iokit.IOSurface	91
com.apple.iokit.IOBluetoothFamily	4.2.0f6
com.apple.driver.AppleSMC	3.1.6d1
com.apple.driver.IOPlatformPluginLegacy	1.0.0
com.apple.driver.IOPlatformPluginFamily	5.5.1d27
com.apple.nvidia.classic.NVDANV50HalTesla	8.1.8
com.apple.nvidia.classic.NVDAResmanTesla	8.1.8
com.apple.iokit.IONDRVSupport	2.3.6
com.apple.iokit.IOGraphicsFamily	2.3.6
com.apple.driver.AppleUSBMultitouch	240.6
com.apple.iokit.IOUSBHIDDriver	650.4.4
com.apple.driver.AppleUSBMergeNub	650.4.0
com.apple.driver.AppleUSBComposite	650.4.0
com.apple.iokit.IOUSBUserClient	650.4.4
com.apple.iokit.IO80211Family	600.34
com.apple.iokit.IONetworkingFamily	3.2
com.apple.driver.AppleMCP89RootPortPM	1.11
com.apple.iokit.IOAHCIFamily	2.6.0
com.apple.iokit.IOUSBFamily	650.4.4
com.apple.driver.NVSMU	2.2.9
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	278.10
com.apple.kext.AppleMatch	1.0.0d1
com.apple.security.TMSafetyNet	7
com.apple.driver.AppleKeyStore	2
com.apple.driver.DiskImages	371.1
com.apple.iokit.IOStorageFamily	1.9
com.apple.iokit.IOReportFamily	21
com.apple.driver.AppleFDEKeyStore	28.30
com.apple.driver.AppleACPIPlatform	2.0
com.apple.iokit.IOPCIFamily	2.8
com.apple.iokit.IOACPIFamily	1.4
com.apple.kec.corecrypto	1.0
com.apple.kec.pthread	1