Kernel panic when unable to allocate enough memory

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I only use my ZFS pools for doing an rsync then a snapshot.  During the rsync I 
got a kernel panic.  Strangely it looks like a memory allocation failure, 
yet there was very little running on the system at the time as I was getting 
ready to reboot.  So there was plenty of system memory.  Here is the log if it 
helps:

macpro:~ sam$ cat 
/Library/Logs/DiagnosticReports/Kernel_2010-01-09-110035_macpro.panic 
Sat Jan  9 11:00:35 2010
panic(cpu 2 caller 0x83cca64c): "zfs: vmem_alloc couldn't alloc 131072 
bytes\n"@/Users/dustin/prog/eprojects/mac-
zfs/zfs_kext/zfs/zfs_context.c:700
Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x841f3a38 : 0x21b2bd (0x5cf868 0x841f3a6c 0x223719 0x0) 
0x841f3a88 : 0x83cca64c (0x83d1e838 0x20000 0x20000 0x83cca9ac) 
0x841f3ab8 : 0x83ce527d (0x83d32d94 0x20000 0x0 0x83c82dcb) 
0x841f3b08 : 0x83c81638 (0xe18d800 0x0 0x841f3b38 0x83cca9ac) 
0x841f3b28 : 0x83c8ae3b (0x20000 0x0 0x83d2b270 0x83ce5588) 
0x841f3b88 : 0x83c8b6c4 (0xe18d000 0x0 0x841f3bb8 0x83cca9ac) 
0x841f3bb8 : 0x83c91b44 (0xe89c000 0x20000 0xbf6d1030 0x0) 
0x841f3c08 : 0x83c98c15 (0xbf6d1030 0x13b8b780 0x20000 0x0) 
0x841f3c88 : 0x83c72208 (0xe923270 0x18a37c 0x0 0x841f3ec4) 
0x841f3dc8 : 0x2f98a5 (0x841f3dec 0x3 0x841f3e18 0x57c9b4) 
0x841f3e18 : 0x2ee798 (0x19e9dd7c 0x841f3ec4 0x1 0x841f3f54) 
0x841f3e78 : 0x49606e (0x10e4c9c0 0x841f3ec4 0x0 0x841f3f54) 
0x841f3f18 : 0x4961cc (0x841f3f54 0x10e4c9c0 0x1ad000 0x1) 
0x841f3f78 : 0x4ee947 (0x12b0a540 0xe172b88 0xefa6d54 0x1) 
0x841f3fc8 : 0x29e3fd (0xe172b84 0x0 0x10 0xceb2244) 
      Kernel Extensions in backtrace (with dependencies):
         com.apple.filesystems.zfs(8.0)@0x83c6e000->0x83d32fff

BSD process name corresponding to current thread: rsync

Mac OS version:
10C540

Kernel version:
Darwin Kernel Version 10.2.0: Tue Nov  3 10:37:10 PST 2009; 
root:xnu-1486.2.11~1/RELEASE_I386
System model name: MacPro1,1 (Mac-F4208DC8)

System uptime in nanoseconds: 1807549187311526
unloaded kexts:
com.apple.filesystems.cd9660    1.4.0 (addr 0x82d49000, size 0x36864) - last 
unloaded 1807447274890616
loaded kexts:
com.parallels.kext.prl_vnic 5.0 9220.531002
com.vmware.kext.vmnet   3.0.0
com.parallels.kext.prl_netbridge    5.0 9220.531002
com.vmware.kext.vmioplug    3.0.0
com.parallels.kext.prl_usb_connect  5.0 9220.531002
com.vmware.kext.vmci    3.0.0
com.parallels.kext.prl_hid_hook 5.0 9220.531002
com.vmware.kext.vmx86   3.0.0
com.parallels.kext.prl_hypervisor   5.0 9220.531002
com.microsoft.driver.MicrosoftMouseUSB  7.0.0
com.microsoft.driver.MicrosoftMouse 7.0.0
com.highpoint-tech.kext.HighPointIOP    2.0.1
com.apple.filesystems.afpfs 9.6 - last loaded 1807345110030968
com.apple.nke.asp_tcp   5.0
com.apple.filesystems.webdav    1.8
com.apple.driver.AppleHWSensor  1.9.2d0
com.apple.filesystems.autofs    2.1.0
com.apple.Dont_Steal_Mac_OS_X   7.0.0
com.apple.iokit.CHUDUtils   201
com.apple.iokit.CHUDProf    212
com.apple.driver.AppleUpstreamUserClient    3.1.0
com.apple.GeForce   6.0.6
com.apple.driver.AudioIPCDriver 1.1.2
com.apple.driver.AppleHDA   1.7.9a4
com.apple.driver.AppleUSBDisplays   2.2
com.apple.driver.AppleIntel8254XEthernet    2.1.1b7
com.apple.driver.AirPortBrcm43xx    421.91.26
com.apple.driver.AppleIntelMeromProfile 19
com.apple.driver.AppleMCEDriver 1.1.9
com.apple.driver.ACPI_SMC_PlatformPlugin    4.0.1d0
com.apple.driver.AppleLPC   1.4.9
com.apple.filesystems.zfs   8.0
com.apple.iokit.SCSITaskUserClient  2.6.0
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.driver.AppleFWOHCI    4.4.0
com.apple.driver.AppleUSBHub    3.8.4
com.apple.driver.AppleIntelPIIXATA  2.5.0
com.apple.iokit.IOAHCIBlockStorage  1.6.0
com.apple.driver.AppleAHCIPort  2.0.1
com.apple.driver.AppleEFINVRAM  1.3.0
com.apple.driver.AppleUSBEHCI   3.7.5
com.apple.driver.AppleUSBUHCI   3.7.5
com.apple.driver.AppleACPIButtons   1.3
com.apple.driver.AppleRTC   1.3
com.apple.driver.AppleHPET  1.4
com.apple.driver.AppleSMBIOS    1.4
com.apple.driver.AppleACPIEC    1.3
com.apple.driver.AppleAPIC  1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 96.0.0
com.apple.security.sandbox  0
com.apple.security.quarantine   0
com.apple.nke.applicationfirewall   2.1.11
com.apple.driver.AppleIntelCPUPowerManagement   96.0.0
com.apple.driver.AppleProfileReadCounterAction  17
com.apple.driver.AppleProfileTimestampAction    10
com.apple.driver.AppleProfileThreadInfoAction   14
com.apple.driver.AppleProfileRegisterStateAction    10
com.apple.driver.AppleProfileKEventAction   10
com.apple.driver.AppleProfileCallstackAction    20
com.apple.iokit.IOSurface   73.0
com.apple.iokit.IOBluetoothSerialManager    2.2.4f3
com.apple.iokit.IOSerialFamily  10.0.3
com.apple.iokit.CHUDKernLib 203
com.apple.driver.DspFuncLib 1.7.9a4
com.apple.driver.AppleUSBAudio  2.6.6b2
com.apple.iokit.IOAudioFamily   1.7.2fc1
com.apple.kext.OSvKernDSPLib    1.3
com.apple.nvidia.nv50hal    6.0.6
com.apple.NVDAResman    6.0.6
com.apple.iokit.IONDRVSupport   2.0
com.apple.iokit.IOFireWireIP    2.0.3
com.apple.iokit.IO80211Family   310.6
com.apple.iokit.IONetworkingFamily  1.9
com.apple.iokit.AppleProfileFamily  41
com.apple.driver.AppleHDAController 1.7.9a4
com.apple.iokit.IOGraphicsFamily    2.0
com.apple.iokit.IOHDAFamily 1.7.9a4
com.apple.driver.AppleSMC   3.0.1d2
com.apple.driver.IOPlatformPluginFamily 4.0.1d0
com.apple.driver.CSRUSBBluetoothHCIController   2.2.4f3
com.apple.driver.AppleUSBBluetoothHCIController 2.2.4f3
com.apple.iokit.IOBluetoothFamily   2.2.4f3
com.apple.iokit.IOSCSIBlockCommandsDevice   2.6.0
com.apple.iokit.IOUSBMassStorageClass   2.5.1
com.apple.iokit.IOUSBHIDDriver  3.8.4
com.apple.driver.AppleUSBMergeNub   3.8.5
com.apple.driver.AppleUSBComposite  3.7.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice  2.6.0
com.apple.iokit.IOBDStorageFamily   1.6
com.apple.iokit.IODVDStorageFamily  1.6
com.apple.iokit.IOCDStorageFamily   1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOATAPIProtocolTransport    2.5.0
com.apple.iokit.IOSCSIParallelFamily    2.0.0
com.apple.iokit.IOSCSIArchitectureModelFamily   2.6.0
com.apple.iokit.IOFireWireFamily    4.1.7
com.apple.iokit.IOUSBUserClient 3.8.5
com.apple.iokit.IOATAFamily 2.5.0
com.apple.iokit.IOAHCIFamily    2.0.2
com.apple.iokit.IOUSBFamily 3.8.5
com.apple.driver.AppleEFIRuntime    1.3.0
com.apple.iokit.IOHIDFamily 1.6.1
com.apple.iokit.IOSMBusFamily   1.1
com.apple.security.TMSafetyNet  6
com.apple.kext.AppleMatch   1.0.0d1
com.apple.driver.DiskImages 281
com.apple.iokit.IOStorageFamily 1.6
com.apple.driver.AppleACPIPlatform  1.3
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily    1.3.0

Original issue reported on code.google.com by spull...@gmail.com on 9 Jan 2010 at 7:12