Unexpected Signal

[Michael Morris]

Hi All,
I was doing some experimenting with Jpcap for creating a Java packet sniffer on Windows 2000. Everything works fine if I just create a Jpcap instance and call loopPacket. An AWT GUI implementation is provided with the Jpcap download. After starting the GUI, if I try to select an interface (NIC) the program exits and leaves a .log file on my desktop.
Here are the contents:

Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x6D3943F7
Function=[Unknown.]
Library=C:\Program Files\Java\j2re1.4.1\bin\client\jvm.dll
NOTE: We are unable to locate the function name symbol for the error
just occurred. Please refer to release documentation for possible
reason and solutions.

Current Java thread:
at jpcap.Jpcap.nativeOpenLive(Native Method)
at jpcap.Jpcap.<init>(Jpcap.java:151)
at JDCaptureDialog.capturePackets(JDCaptureDialog.java:54)
at JDFrame.actionPerformed(JDFrame.java:105)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1109)
at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(BasicMenuItemUI.java:943)
at java.awt.Component.processMouseEvent(Component.java:5093)
at java.awt.Component.processEvent(Component.java:4890)
at java.awt.Container.processEvent(Container.java:1566)
at java.awt.Component.dispatchEventImpl(Component.java:3598)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Component.dispatchEvent(Component.java:3439)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3165)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
at java.awt.Container.dispatchEventImpl(Container.java:1609)
at java.awt.Window.dispatchEventImpl(Window.java:1585)
at java.awt.Component.dispatchEvent(Component.java:3439)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
Dynamic libraries:
0x00400000 - 0x00406000 C:\Program Files\Java\j2re1.4.1\bin\javaw.exe
0x77F80000 - 0x77FFB000 C:\WINNT\System32\ntdll.dll
0x77DB0000 - 0x77E0B000 C:\WINNT\system32\ADVAPI32.dll
0x77E80000 - 0x77F31000 C:\WINNT\system32\KERNEL32.dll
0x77D30000 - 0x77DA1000 C:\WINNT\system32\RPCRT4.dll
0x77E10000 - 0x77E6F000 C:\WINNT\system32\USER32.dll
0x77F40000 - 0x77F79000 C:\WINNT\system32\GDI32.dll
0x78000000 - 0x78046000 C:\WINNT\system32\MSVCRT.dll
0x6D330000 - 0x6D45C000 C:\Program Files\Java\j2re1.4.1\bin\client\jvm.dll
0x77570000 - 0x775A0000 C:\WINNT\System32\WINMM.dll
0x681A0000 - 0x681A7000 C:\WINNT\System32\serwvdrv.dll
0x66740000 - 0x66747000 C:\WINNT\System32\umdmxfrm.dll
0x6D1D0000 - 0x6D1D7000 C:\Program Files\Java\j2re1.4.1\bin\hpi.dll
0x6D300000 - 0x6D30D000 C:\Program Files\Java\j2re1.4.1\bin\verify.dll
0x6D210000 - 0x6D229000 C:\Program Files\Java\j2re1.4.1\bin\java.dll
0x6D320000 - 0x6D32D000 C:\Program Files\Java\j2re1.4.1\bin\zip.dll
0x6D000000 - 0x6D0FA000 C:\Program Files\Java\j2re1.4.1\bin\awt.dll
0x77800000 - 0x7781E000 C:\WINNT\System32\WINSPOOL.DRV
0x76620000 - 0x76630000 C:\WINNT\system32\MPR.dll
0x75E60000 - 0x75E7A000 C:\WINNT\System32\IMM32.dll
0x77A50000 - 0x77B45000 C:\WINNT\system32\ole32.dll
0x6D180000 - 0x6D1D0000 C:\Program Files\Java\j2re1.4.1\bin\fontmanager.dll
0x51000000 - 0x51044000 C:\WINNT\System32\ddraw.dll
0x728A0000 - 0x728A6000 C:\WINNT\System32\DCIMAN32.dll
0x72D90000 - 0x72E03000 C:\WINNT\System32\D3DIM.DLL
0x782F0000 - 0x78534000 C:\WINNT\system32\shell32.dll
0x70BD0000 - 0x70C35000 C:\WINNT\system32\SHLWAPI.dll
0x71710000 - 0x71794000 C:\WINNT\system32\COMCTL32.dll
0x779B0000 - 0x77A4B000 C:\WINNT\system32\OLEAUT32.DLL
0x775A0000 - 0x77625000 C:\WINNT\System32\CLBCATQ.DLL
0x77840000 - 0x7787D000 C:\WINNT\System32\cscui.dll
0x770C0000 - 0x770E3000 C:\WINNT\System32\CSCDLL.DLL
0x76DF0000 - 0x76E01000 C:\WINNT\System32\mydocs.dll
0x0F8C0000 - 0x0FA09000 C:\WINNT\System32\SHDOCVW.DLL
0x75160000 - 0x7516C000 C:\WINNT\System32\ntlanman.dll
0x75210000 - 0x75225000 C:\WINNT\System32\NETUI0.DLL
0x751D0000 - 0x75208000 C:\WINNT\System32\NETUI1.DLL
0x75170000 - 0x751BF000 C:\WINNT\System32\NETAPI32.DLL
0x77BE0000 - 0x77BEF000 C:\WINNT\System32\Secur32.dll
0x751C0000 - 0x751C6000 C:\WINNT\System32\NETRAP.dll
0x75150000 - 0x75160000 C:\WINNT\System32\SAMLIB.dll
0x75030000 - 0x75043000 C:\WINNT\System32\WS2_32.dll
0x75020000 - 0x75028000 C:\WINNT\System32\WS2HELP.DLL
0x77950000 - 0x77978000 C:\WINNT\system32\WLDAP32.dll
0x77980000 - 0x779A4000 C:\WINNT\System32\DNSAPI.dll
0x75050000 - 0x75058000 C:\WINNT\System32\WSOCK32.dll
0x76FA0000 - 0x76FAF000 C:\WINNT\System32\ntshrui.dll
0x773E0000 - 0x773F5000 C:\WINNT\System32\ATL.DLL
0x10000000 - 0x1001F000 C:\WINNT\system32\Jpcap.dll
0x0FC30000 - 0x0FC3A000 C:\WINNT\System32\packet.dll
0x782C0000 - 0x782CC000 C:\WINNT\System32\rnr20.dll
0x77340000 - 0x77353000 C:\WINNT\System32\iphlpapi.dll
0x77520000 - 0x77525000 C:\WINNT\System32\ICMP.DLL
0x77320000 - 0x77337000 C:\WINNT\System32\MPRAPI.DLL
0x773B0000 - 0x773DE000 C:\WINNT\System32\ACTIVEDS.DLL
0x77380000 - 0x773A2000 C:\WINNT\System32\ADSLDPC.DLL
0x77830000 - 0x7783E000 C:\WINNT\System32\RTUTILS.DLL
0x77880000 - 0x7790D000 C:\WINNT\System32\SETUPAPI.DLL
0x77C10000 - 0x77C6D000 C:\WINNT\System32\USERENV.DLL
0x774E0000 - 0x77512000 C:\WINNT\System32\RASAPI32.DLL
0x774C0000 - 0x774D1000 C:\WINNT\System32\RASMAN.DLL
0x77530000 - 0x77552000 C:\WINNT\System32\TAPI32.DLL
0x77360000 - 0x77379000 C:\WINNT\System32\DHCPCSVC.DLL
0x777E0000 - 0x777E8000 C:\WINNT\System32\winrnr.dll
0x777F0000 - 0x777F5000 C:\WINNT\System32\rasadhlp.dll
0x77920000 - 0x77943000 C:\WINNT\system32\imagehlp.dll
0x72A00000 - 0x72A2D000 C:\WINNT\system32\DBGHELP.dll
0x690A0000 - 0x690AB000 C:\WINNT\System32\PSAPI.DLL
Local Time = Sun Feb 09 14:52:18 2003
Elapsed Time = 34
#
# HotSpot Virtual Machine Error : EXCEPTION_ACCESS_VIOLATION
# Error ID : 4F530E43505002E6
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Java VM: Java HotSpot(TM) Client VM (1.4.1-b21 mixed mode)
#
My question is, is this being generated by the JVM or by the application? Should I file a bug report on it?
Also note that I have full Administrator privileges and the file system is NTFS.
Thanks in advance,
Michael Morris

[Blake Minghelli]

Funny coincidence, just today I got the same message when I was trying to use a swing app that I know was working on Friday.
I know this doesn't answer your question, but rebooting "fixed" the problem for me.