fuse-ext2 0.0.7 caused kernel panic on umount

Interval Since Last Panic Report:  3127319 sec
Panics Since Last Report:          1
Anonymous UUID:                    8B27067A-A853-445C-823E-338807FA5BB4
Thu Jan  3 13:06:19 2013
panic(cpu 1 caller 0xffffff80002b50a6): trying to interlock destroyed mutex (0xffffff800760eb40)
Backtrace (CPU 1), Frame : Return Address
0xffffff8059de3cb0 : 0xffffff8000220792 
0xffffff8059de3d30 : 0xffffff80002b50a6 
0xffffff8059de3d40 : 0xffffff800053ce1e 
0xffffff8059de3d90 : 0xffffff800053d0b5 
0xffffff8059de3db0 : 0xffffff8000536724 
0xffffff8059de3e10 : 0xffffff800053687f 
0xffffff8059de3e50 : 0xffffff80005444ca 
0xffffff8059de3ec0 : 0xffffff800023ba9b 
0xffffff8059de3ef0 : 0xffffff800023bf9a 
0xffffff8059de3f20 : 0xffffff800023c030 
0xffffff8059de3f50 : 0xffffff800021e14e 
0xffffff8059de3f90 : 0xffffff80002c3d3a 
0xffffff8059de3fb0 : 0xffffff80002da52c 
BSD process name corresponding to current thread: fuse-ext2
Boot args: -v
Mac OS version:
11G63
Kernel version:
Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64
Kernel UUID: FF3BB088-60A4-349C-92EA-CA649C698CE5
System model name: MacBookAir3,1 (Mac-942452F5819B1C1B)
System uptime in nanoseconds: 165950770072150
last loaded kext at 161840054007696: com.apple.iokit.SCSITaskUserClient 3.2.1 (addr 0xffffff7f8074e000, size 36864)
last unloaded kext at 161913699045119: com.apple.driver.AppleUSBCDC 4.1.22 (addr 0xffffff7f8074b000, size 12288)
loaded kexts:
com.github.osxfuse.filesystems.osxfusefs    2.5.2
com.google.filesystems.fusefs   2.2.2
org.pqrs.driver.KeyRemap4MacBook    7.8.0
org.virtualbox.kext.VBoxNetAdp  4.1.8
org.virtualbox.kext.VBoxNetFlt  4.1.8
org.virtualbox.kext.VBoxUSB 4.1.8
org.virtualbox.kext.VBoxDrv 4.1.8
com.apple.filesystems.smbfs 1.7.2
com.apple.driver.AppleIntelProfile  85.2
com.apple.driver.AppleHWSensor  1.9.5d0
com.apple.filesystems.autofs    3.0
com.apple.driver.ApplePlatformEnabler   2.0.5d3
com.apple.driver.AGPM   100.12.75
com.apple.driver.AppleMikeyHIDDriver    122
com.apple.driver.AudioAUUC  1.59
com.apple.driver.AppleMikeyDriver   2.2.5a5
com.apple.driver.AppleHDA   2.2.5a5
com.apple.driver.AppleUpstreamUserClient    3.5.9
com.apple.driver.ACPI_SMC_PlatformPlugin    5.0.0d8
com.apple.iokit.IOUserEthernet  1.0.0d1
com.apple.iokit.IOBluetoothSerialManager    4.0.8f17
com.apple.Dont_Steal_Mac_OS_X   7.0.0
com.apple.driver.AudioIPCDriver 1.2.3
com.apple.driver.ApplePolicyControl 3.1.33
com.apple.driver.AppleLPC   1.6.0
com.apple.driver.AppleBacklight 170.2.2
com.apple.GeForce   7.3.2
com.apple.driver.AppleMCCSControl   1.0.33
com.apple.driver.BroadcomUSBBluetoothHCIController  4.0.8f17
com.apple.driver.AppleUSBTCButtons  227.6
com.apple.driver.AppleUSBTCKeyboard 227.6
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 33
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage  2.1.0
com.apple.driver.AirPort.Brcm4331   561.7.22
com.apple.driver.AppleUSBHub    5.1.0
com.apple.driver.AppleSmartBatteryManager   161.0.0
com.apple.driver.AppleEFINVRAM  1.6.1
com.apple.driver.AppleAHCIPort  2.3.1
com.apple.driver.AppleUSBEHCI   5.1.0
com.apple.driver.AppleUSBOHCI   5.1.0
com.apple.driver.AppleRTC   1.5
com.apple.driver.AppleHPET  1.7
com.apple.driver.AppleACPIButtons   1.5
com.apple.driver.AppleSMBIOS    1.9
com.apple.driver.AppleACPIEC    1.5
com.apple.driver.AppleAPIC  1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 195.0.0
com.apple.nke.applicationfirewall   3.2.30
com.apple.security.quarantine   1.4
com.apple.security.TMSafetyNet  8
com.apple.driver.AppleIntelCPUPowerManagement   195.0.0
com.apple.iokit.IOSCSIBlockCommandsDevice   3.2.1
com.apple.iokit.IOUSBMassStorageClass   3.0.3
com.apple.driver.AppleProfileTimestampAction    85.2
com.apple.driver.AppleProfileThreadInfoAction   85.2
com.apple.driver.AppleProfileRegisterStateAction    85.2
com.apple.driver.AppleProfileReadCounterAction  85.2
com.apple.driver.AppleProfileKEventAction   85.2
com.apple.driver.AppleProfileCallstackAction    85.2
com.apple.iokit.AppleProfileFamily  85.2
com.apple.kext.triggers 1.0
com.apple.driver.DspFuncLib 2.2.5a5
com.apple.driver.IOPlatformPluginLegacy 5.0.0d8
com.apple.iokit.IOSurface   80.0.2
com.apple.iokit.IOSerialFamily  10.0.5
com.apple.driver.AppleHDAController 2.2.5a5
com.apple.iokit.IOHDAFamily 2.2.5a5
com.apple.driver.AppleSMC   3.1.3d10
com.apple.iokit.IOAudioFamily   1.8.6fc18
com.apple.kext.OSvKernDSPLib    1.3
com.apple.driver.IOPlatformPluginFamily 5.1.1d6
com.apple.driver.AppleSMBusPCI  1.0.10d0
com.apple.driver.AppleGraphicsControl   3.1.33
com.apple.driver.AppleBacklightExpert   1.0.4
com.apple.driver.AppleSMBusController   1.0.10d0
com.apple.nvidia.nv50hal    7.3.2
com.apple.NVDAResman    7.3.2
com.apple.iokit.IONDRVSupport   2.3.4
com.apple.iokit.IOGraphicsFamily    2.3.4
com.apple.driver.AppleUSBBluetoothHCIController 4.0.8f17
com.apple.iokit.IOBluetoothFamily   4.0.8f17
com.apple.driver.AppleUSBMultitouch 230.5
com.apple.iokit.IOUSBHIDDriver  5.0.0
com.apple.driver.AppleUSBMergeNub   5.1.0
com.apple.iokit.IOSCSIArchitectureModelFamily   3.2.1
com.apple.driver.AppleUSBComposite  5.0.0
com.apple.iokit.IO80211Family   420.3
com.apple.iokit.IONetworkingFamily  2.1
com.apple.iokit.IOUSBUserClient 5.0.0
com.apple.driver.AppleMCP89RootPortPM   1.11
com.apple.iokit.IOAHCIFamily    2.0.8
com.apple.iokit.IOUSBFamily 5.1.0
com.apple.driver.NVSMU  2.2.9
com.apple.driver.AppleEFIRuntime    1.6.1
com.apple.iokit.IOHIDFamily 1.7.1
com.apple.iokit.IOSMBusFamily   1.1
com.apple.security.sandbox  177.8
com.apple.kext.AppleMatch   1.0.0d1
com.apple.driver.DiskImages 331.7
com.apple.iokit.IOStorageFamily 1.7.2
com.apple.driver.AppleKeyStore  28.18
com.apple.driver.AppleACPIPlatform  1.5
com.apple.iokit.IOPCIFamily 2.7
com.apple.iokit.IOACPIFamily    1.4
Model: MacBookAir3,1, BootROM MBA31.0061.B07, 2 processors, Intel Core 2 Duo, 1.4 GHz, 2 GB, SMC 1.67f4
Graphics: NVIDIA GeForce 320M, NVIDIA GeForce 320M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 1 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142323837334648532D5946382020
Memory Module: BANK 1/DIMM0, 1 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142323837334648532D5946382020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD1), Broadcom BCM43xx 1.0 (5.106.198.19.22)
Bluetooth: Version 4.0.8f17, 2 service, 11 devices, 2 incoming serial ports
Network Service: AirPort, AirPort, en0
Serial ATA Device: APPLE SSD TS128C, 121.33 GB
USB Device: hub_device, 0x058f  (Alcor Micro, Corp.), 0x6254, 0x24100000 / 3
USB Device: USB Multimedia Keyboard, 0x046d  (Logitech Inc.), 0xc312, 0x24120000 / 5
USB Device: PS2 to USB Converter, 0x0a81  (CHESEN ELECTRONICS CORP.), 0x0205, 0x24130000 / 4
USB Device: FaceTime Camera (Built-in), apple_vendor_id, 0x850a, 0x24600000 / 2
USB Device: External HDD, 0x1058  (Western Digital Technologies, Inc.), 0x0704, 0x26200000 / 2
USB Device: BRCM2070 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x04500000 / 3
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821b, 0x04530000 / 5
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0243, 0x04300000 / 2