Panic on Lion with OSXFUSE 2.5.1

[ivenhov]

Hi all

I had a Macbook freeze during test of filesystem with OSXFUSE 2.5.1.

This may not be a problem with OSXFUSE itself but rather my tests and fs that ran away.

Here's the report after freeze.

Unfortunately I cannot say anything about what operations were performed during test as test and fs just went mad.

This is fist time it happened. I will try to reproduce it to narrow it down.

Interval Since Last Panic Report:  1528753 sec

Panics Since Last Report:          2

Anonymous UUID:                    0C936104-35B3-488D-B93E-960E8A6108BF

Fri Aug 24 17:36:36 2012

panic(cpu 2 caller 0xffffff7f80ff3940): "OSXFUSE: Attempted to lock max-locked recursive lock."@/Users/benjamin/Documents/Projekte/OSXFUSE/Repositories/osxfuse/kext/fuse_locking.c:434

Backtrace (CPU 2), Frame : Return Address

0xffffff811390b650 : 0xffffff8000220792 

0xffffff811390b6d0 : 0xffffff7f80ff3940 

0xffffff811390b6f0 : 0xffffff7f80fffd1f 

0xffffff811390b720 : 0xffffff80003191df 

0xffffff811390b750 : 0xffffff80002ff8cb 

0xffffff811390b7a0 : 0xffffff80002ff59e 

0xffffff811390b7e0 : 0xffffff80002ffbde 

0xffffff811390b810 : 0xffffff80002ffc3c 

0xffffff811390b830 : 0xffffff7f80ff46b0 

0xffffff811390b920 : 0xffffff7f80ff479b 

0xffffff811390b970 : 0xffffff7f80ff9298 

0xffffff811390ba80 : 0xffffff7f80fff8f1 

0xffffff811390bab0 : 0xffffff80003190a4 

0xffffff811390baf0 : 0xffffff80002f703a 

0xffffff811390bb70 : 0xffffff80002f5eac 

0xffffff811390bc10 : 0xffffff8000308a62 

0xffffff811390bd90 : 0xffffff800030924c 

0xffffff811390bf50 : 0xffffff80005cd61b 

0xffffff811390bfb0 : 0xffffff80002daa13 

      Kernel Extensions in backtrace:

         com.github.osxfuse.filesystems.osxfusefs(2.5.1)[71E31C8C-E3E2-4956-8935-F0450493715A]@0xffffff7f80fec000->0xffffff7f81003fff

BSD process name corresponding to current thread: fseventsd

Boot args: arch=x86_64

Mac OS version:

11E53

Kernel version:

Darwin Kernel Version 11.4.0: Mon Apr  9 19:32:15 PDT 2012; root:xnu-1699.26.8~1/RELEASE_X86_64

Kernel UUID: A8ED611D-FB0F-3729-8392-E7A32C5E7D74

System model name: MacBookPro6,2 (Mac-F22586C8)

System uptime in nanoseconds: 363469453244049

last loaded kext at 328320298566160: com.apple.filesystems.msdosfs 1.7.1 (addr 0xffffff7f80873000, size 57344)

last unloaded kext at 328489443331755: com.apple.driver.AppleUSBCDC 4.1.17 (addr 0xffffff7f807c6000, size 12288)

loaded kexts:

com.github.osxfuse.filesystems.osxfusefs 2.5.1

org.virtualbox.kext.VBoxNetAdp 4.1.18

org.virtualbox.kext.VBoxNetFlt 4.1.18

org.virtualbox.kext.VBoxUSB 4.1.18

org.virtualbox.kext.VBoxDrv 4.1.18

com.apple.filesystems.msdosfs 1.7.1

com.apple.driver.AppleBluetoothMultitouch 70.12

com.apple.filesystems.afpfs 9.8.1

com.apple.nke.asp_tcp 6.0.1

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.filesystems.ntfs 3.10.1

com.apple.driver.AppleMikeyHIDDriver 122

com.apple.driver.AudioAUUC 1.59

com.apple.driver.AppleHDA 2.2.0f3

com.apple.driver.AppleMikeyDriver 2.2.0f3

com.apple.driver.AGPM 100.12.42

com.apple.driver.AppleUpstreamUserClient 3.5.9

com.apple.driver.AppleMCCSControl 1.0.26

com.apple.driver.SMCMotionSensor 3.0.2d6

com.apple.driver.AppleSMCPDRC 5.0.0d0

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.iokit.IOBluetoothSerialManager 4.0.5f11

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleSMCLMU 2.0.1d2

com.apple.GeForce 7.1.8

com.apple.driver.ACPI_SMC_PlatformPlugin 5.0.0d0

com.apple.driver.AppleLPC 1.5.8

com.apple.driver.AudioIPCDriver 1.2.2

com.apple.driver.AppleMuxControl 3.0.16

com.apple.driver.AppleIntelHDGraphics 7.1.8

com.apple.driver.AppleIntelHDGraphicsFB 7.1.8

com.apple.driver.AppleUSBTCButtons 225.2

com.apple.driver.BroadcomUSBBluetoothHCIController 4.0.5f11

com.apple.driver.AppleIRController 312

com.apple.driver.AppleUSBCardReader 3.0.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 33

com.apple.driver.AppleUSBTCKeyboard 225.2

com.apple.iokit.SCSITaskUserClient 3.2.0

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCISerialATAPI 2.0.3

com.apple.iokit.IOAHCIBlockStorage 2.0.3

com.apple.driver.AppleUSBHub 4.5.0

com.apple.driver.AppleFWOHCI 4.8.9

com.apple.driver.AirPort.Brcm4331 530.4.20

com.apple.iokit.AppleBCM5701Ethernet 3.1.2b2

com.apple.driver.AppleEFINVRAM 1.5.0

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleAHCIPort 2.3.0

com.apple.driver.AppleUSBEHCI 4.5.8

com.apple.driver.AppleACPIButtons 1.5

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleHPET 1.6

com.apple.driver.AppleSMBIOS 1.8

com.apple.driver.AppleACPIEC 1.5

com.apple.driver.AppleAPIC 1.5

com.apple.driver.AppleIntelCPUPowerManagementClient 193.0.0

com.apple.nke.applicationfirewall 3.2.30

com.apple.security.quarantine 1.3

com.apple.driver.AppleIntelCPUPowerManagement 193.0.0

com.apple.driver.AppleUSBHIDKeyboard 160.7

com.apple.driver.AppleHIDKeyboard 160.7

com.apple.driver.AppleMultitouchDriver 231.4

com.apple.driver.IOBluetoothHIDDriver 4.0.5f11

com.apple.security.SecureRemotePassword 1.0

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 2.2.0f3

com.apple.driver.AppleSMBusController 1.0.10d0

com.apple.iokit.IOSurface 80.0.2

com.apple.iokit.IOSerialFamily 10.0.5

com.apple.driver.AppleHDAController 2.2.0f3

com.apple.iokit.IOHDAFamily 2.2.0f3

com.apple.iokit.IOFireWireIP 2.2.4

com.apple.driver.AppleSMBusPCI 1.0.10d0

com.apple.driver.AppleSMC 3.1.3d8

com.apple.driver.IOPlatformPluginLegacy 5.0.0d0

com.apple.driver.IOPlatformPluginFamily 5.1.0d17

com.apple.iokit.IOAudioFamily 1.8.6fc17

com.apple.kext.OSvKernDSPLib 1.3

com.apple.driver.ApplePolicyControl 3.0.16

com.apple.driver.AppleGraphicsControl 3.0.16

com.apple.driver.AppleBacklightExpert 1.0.3

com.apple.nvidia.nv50hal 7.1.8

com.apple.NVDAResman 7.1.8

com.apple.iokit.IONDRVSupport 2.3.2

com.apple.iokit.IOGraphicsFamily 2.3.2

com.apple.driver.AppleUSBBluetoothHCIController 4.0.5f11

com.apple.iokit.IOBluetoothFamily 4.0.5f11

com.apple.iokit.IOSCSIBlockCommandsDevice 3.2.0

com.apple.iokit.IOUSBMassStorageClass 3.0.1

com.apple.driver.AppleUSBMultitouch 227.1

com.apple.iokit.IOUSBHIDDriver 4.4.5

com.apple.driver.AppleUSBMergeNub 4.5.3

com.apple.driver.AppleUSBComposite 4.5.8

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.0

com.apple.iokit.IOBDStorageFamily 1.6

com.apple.iokit.IODVDStorageFamily 1.7

com.apple.iokit.IOCDStorageFamily 1.7

com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.0

com.apple.iokit.IOUSBUserClient 4.5.8

com.apple.iokit.IOFireWireFamily 4.4.5

com.apple.iokit.IO80211Family 420.3

com.apple.iokit.IOEthernetAVBController 1.0.1b1

com.apple.iokit.IONetworkingFamily 2.1

com.apple.iokit.IOAHCIFamily 2.0.8

com.apple.driver.AppleEFIRuntime 1.5.0

com.apple.iokit.IOHIDFamily 1.7.1

com.apple.iokit.IOUSBFamily 4.5.8

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 177.5

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 331.6

com.apple.iokit.IOStorageFamily 1.7.1

com.apple.driver.AppleKeyStore 28.18

com.apple.driver.AppleACPIPlatform 1.5

com.apple.iokit.IOPCIFamily 2.6.8

com.apple.iokit.IOACPIFamily 1.4

Model: MacBookPro6,2, BootROM MBP61.0057.B0F, 2 processors, Intel Core i5, 2.4 GHz, 8 GB, SMC 1.58f16

Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 256 MB

Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB

Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x802C, 0x31364A53463531323634485A2D3147314431

Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1067 MHz, 0x802C, 0x31364A53463531323634485A2D3147314431

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.106.198.4.20)

Bluetooth: Version 4.0.5f11, 2 service, 18 devices, 1 incoming serial ports

Network Service: Ethernet, Ethernet, en0

Serial ATA Device: OCZ-VERTEX4, 512.11 GB

Serial ATA Device: MATSHITADVD-R   UJ-898

USB Device: hub_device, 0x0424  (SMSC), 0x2514, 0xfa100000 / 2

USB Device: USB2.0 Hub, 0x05e3  (Genesys Logic, Inc.), 0x0608, 0xfa140000 / 6

USB Device: USB 2.0  SATA BRIDGE, 0x14cd  (MOAI ELECTRONICS CORPORATION), 0x6116, 0xfa143000 / 10

USB Device: Keyboard Hub, apple_vendor_id, 0x1006, 0xfa142000 / 9

USB Device: Apple Keyboard, apple_vendor_id, 0x0221, 0xfa142200 / 13

USB Device: USB2.0 Hub, 0x05e3  (Genesys Logic, Inc.), 0x0608, 0xfa141000 / 7

USB Device: Desktop USB Drive, 0x18a5, 0x0216, 0xfa141400 / 12

USB Device: Drobo, 0x19b9, 0x4d10, 0xfa141200 / 11

USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0237, 0xfa120000 / 5

USB Device: BRCM2070 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0xfa110000 / 4

USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8218, 0xfa113000 / 8

USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfa130000 / 3

USB Device: hub_device, 0x0424  (SMSC), 0x2514, 0xfd100000 / 2

USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 4

USB Device: Built-in iSight, apple_vendor_id, 0x8507, 0xfd110000 / 3

Regards

Daniel

[Benjamin Fleischer]

Hi Daniel,

Thanks for the bug report. This is indeed a bug in OSXFUSE. The panic is caused by decrementing the iocount of a vnode (vnode_put) while holding a lock (biglock). As a result the vnode is being reclaimed. The reclaim process eventually calls fuse_vnop_fsync on the vnode which tries to acquire the locked lock. This causes the panic.

The issue should be fixed in commit https://github.com/osxfuse/kext/commit/1fff932b906f01e46627204c0c1055985d1382c2  

Regards,

Benjamin

[ivenhov]

I don't know how you figured it out but thanks for that. Lightning speed!

Is there a chance there will be an official build any time soon or should I try to build it myself?

D.

[Benjamin Fleischer]

I'm still looking into another issue. It should only be a matter of days until a new version of OSXFUSE is released. 

Regards,

Benjamin