I was running Java Workshop on JDK 1.1 when the underlying java
dumped core on me. I have moved the core file to ~evan/cores/core-java.1

Here is the dbx stack trace:
(dbx) w
=>[1] _lwp_kill(0x0, 0x6, 0x0, 0xef771e94, 0x18, 0x0), at 0xef4b98ec
  [2] sysAbort(0x0, 0xef031000, 0xef030430, 0xb, 0x0, 0x10000), at 0xef74eb70
  ---- called from signal handler with signal 11 (SIGSEGV) ------
  [3] t_delete(), at 0xef4cbd18
  [4] realfree(0xedc90960, 0x0, 0xef7797f0, 0xedc90904, 0xedc9090c, 0x57), at 0xef4cb950
  [5] cleanfree(0x0, 0xef5159e0, 0xef5159e0, 0xef515a60, 0x0, 0xef5159e8), at 0xef4cc1cc
  [6] _malloc_unlocked(0x20, 0xef77a000, 0x535938, 0xfc084c64, 0xfc084c08, 0x60), at 0xef4cb31c
  [7] malloc(0x20, 0x1, 0xef7797f0, 0xef771e6c, 0x3bb79341, 0x1), at 0xef4cb214
  [8] calloc(0x1, 0x20, 0xffffffff, 0x0, 0x0, 0x20), at 0xef4ba93c
  [9] sun_awt_motif_X11Graphics_createFromComponent(0xee2f2da8, 0xee32bdf0, 0xef2e5400, 0xef779730, 0x1, 0x0), at 0xef2afadc
  [10] Java_sun_awt_motif_X11Graphics_createFromComponent_stub(0x1061f8, 0xef030ca4, 0xef771800, 0xef771e6c, 0x3bb7937d, 0x1d), at 0xef2c3c3c
  [11] invokeNativeMethod(0x1061d0, 0x19cd98, 0x1061f8, 0xef030ca4, 0xef714adc, 0x19baf8), at 0xef714e70
  [12] finish_invokevirtual(0x19e026, 0xef030ca4, 0x1061f8, 0x1061c8, 0x19baf8, 0x1061d0), at 0xef759260
  [13] do_execute_java_method_vararg(0xef030ca4, 0xef776fc9, 0x0, 0x0, 0x0, 0x106080), at 0xef724758
  [14] execute_java_dynamic_method(0xef030ca4, 0xee307dd8, 0xef776fc4, 0xef776fc8, 0xef779400, 0xf5fd7480), at 0xef723dfc
  [15] ThreadRT0(0xee307dd8, 0xef776fc8, 0x0, 0xfc084c64, 0xfc084c08, 0x4), at 0xef74417c
  [16] start_func(0xef760400, 0xee307dd8, 0xef744124, 0x0, 0x0, 0x0), at 0xef757a18
(dbx)

Here is the trace output from java:
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_ACCERR [addr: 0x10]

        stackbase=EF031000, stackpointer=EF0307C0

Full thread dump:
    "New Agent input" (TID:0xee2f01a0, sys_thread_t:0xedcc0de0, state:R) prio=5
        java.net.SocketInputStream.read(SocketInputStream.java:92)
        java.io.BufferedInputStream.fill(BufferedInputStream.java)
        java.io.BufferedInputStream.read(BufferedInputStream.java)
        java.io.FilterInputStream.read(FilterInputStream.java)
        sun.jws.Debugger.DebuggerMessage.run(DebuggerMessage.java:126)
        java.lang.Thread.run(Thread.java)
    "stderr Watcher" (TID:0xee313ae0, sys_thread_t:0xedcf0de0, state:CW) prio=5
        java.io.PipedInputStream.read(PipedInputStream.java)
        java.lang.ProcessInputStream.read(UNIXProcess.java)
        java.io.DataInputStream.readLine(DataInputStream.java)
        sun.jws.base.StderrIOThread.run(Launcher.java:220)
    "stdout Watcher" (TID:0xee313b28, sys_thread_t:0xedd20de0, state:CW) prio=5
        java.io.PipedInputStream.read(PipedInputStream.java)
        java.lang.ProcessInputStream.read(UNIXProcess.java)
        java.io.DataInputStream.readLine(DataInputStream.java)
        sun.jws.base.StdoutIOThread.run(Launcher.java:184)
    "Waiter" (TID:0xee313b90, sys_thread_t:0xedf90de0, state:CW) prio=5
        java.lang.UNIXProcess.getNumReaders(UNIXProcess.java)
        java.lang.UNIXProcess.waitFor(UNIXProcess.java)
        sun.jws.base.WaitThread.run(Launcher.java:242)
    "stderr reader pid=426" (TID:0xee313e80, sys_thread_t:0xedd50de0, state:R) prio=5
        java.io.FileInputStream.read(FileInputStream.java)
        java.lang.ProcessInputStream.run(UNIXProcess.java)
        java.lang.Thread.run(Thread.java)
    "stdout reader pid=426" (TID:0xee313ef0, sys_thread_t:0xeded0de0, state:R) prio=5
        java.io.FileInputStream.read(FileInputStream.java)
        java.lang.ProcessInputStream.run(UNIXProcess.java)
        java.lang.Thread.run(Thread.java)
    "process reaper" (TID:0xee2ee7a0, sys_thread_t:0xedf00de0, state:CW) prio=5
        java.lang.Thread.run(Thread.java)
    "Page Draw 0" (TID:0xee2ee8d0, sys_thread_t:0xedf30de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.html.PageDrawThread.run(Page.java:2638)
    "ThreadedQueue-5" (TID:0xee321c98, sys_thread_t:0xedd80de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.util.ThreadedQueue.run(ThreadedQueue.java:90)
    "ThreadedQueue-4" (TID:0xee3220a8, sys_thread_t:0xeddb0de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.util.ThreadedQueue.run(ThreadedQueue.java:90)
    "ThreadedQueue-3" (TID:0xee322330, sys_thread_t:0xedde0de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.util.ThreadedQueue.run(ThreadedQueue.java:90)
    "ThreadedQueue-2" (TID:0xee322758, sys_thread_t:0xede10de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.util.ThreadedQueue.run(ThreadedQueue.java:90)
    "ThreadedQueue-1" (TID:0xee313e90, sys_thread_t:0xede40de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.util.ThreadedQueue.run(ThreadedQueue.java:90)
    "ThreadedQueue-0" (TID:0xee314ff8, sys_thread_t:0xede70de0, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.util.ThreadedQueue.run(ThreadedQueue.java:90)
    "AWT-Finalizer" (TID:0xee320730, sys_thread_t:0xedea0de0, state:CW) prio=9
        java.lang.Object.wait(Object.java)
        sun.awt.AWTFinalizer.run(AWTFinalizer.java:48)
    "Screen Updater" (TID:0xee30b590, sys_thread_t:0xedf60de0, state:CW) prio=4
        java.lang.Object.wait(Object.java)
        sun.awt.ScreenUpdater.nextEntry(ScreenUpdater.java:78)
        sun.awt.ScreenUpdater.run(ScreenUpdater.java:98)
    "AWT-Motif" (TID:0xee307e10, sys_thread_t:0xedfc0de0, state:MW) prio=5
        java.lang.Thread.run(Thread.java)
    "AWT-Input" (TID:0xee307df0, sys_thread_t:0xedff0de0, state:CW) prio=5
    "AWT-EventQueue-0" (TID:0xee307dd8, sys_thread_t:0xef030de0, state:R) prio=5 *current thread*
        sun.awt.motif.X11Graphics.<init>(X11Graphics.java:60)
        sun.awt.motif.MComponentPeer.getGraphics(MComponentPeer.java:177)
        java.awt.Component.getGraphics(Component.java)
        java.awt.Component.dispatchEventImpl(Component.java)
        java.awt.Container.dispatchEventImpl(Container.java)
        java.awt.EventDispatchThread.run(EventDispatchThread.java)
    "Finalizer thread" (TID:0xee300220, sys_thread_t:0xef310de0, state:CW) prio=1
    "Async Garbage Collector" (TID:0xee3001d8, sys_thread_t:0xef340de0, state:CW) prio=1
    "Idle thread" (TID:0xee300190, sys_thread_t:0xef370de0, state:R) prio=0
    "Clock" (TID:0xee3000d0, sys_thread_t:0xef430de0, state:CW) prio=12
    "main" (TID:0xee3000a8, sys_thread_t:0x64ed8, state:S) prio=5
        java.lang.Thread.suspend(Thread.java)
        sun.jws.Main.main(Main.java:281)
Monitor Cache Dump:
         unknown key (key=0xef513dc0): monitor owner ef030de0: "AWT-EventQueue-0"
         unknown key (key=0xef340de0): unowned
        Waiting to be notified:
            "Async Garbage Collector"
         java.lang.UNIXProcess@EE315B30/EE4795C8 (key=0xee315b30): unowned
        Waiting to be notified:
            "Waiter"
         java.lang.ProcessInputStream@EE315680/EE479D18 (key=0xee315680): unowned
        Waiting to be notified:
            "stderr Watcher"
         java.lang.ProcessInputStream@EE315810/EE479890 (key=0xee315810): unowned
        Waiting to be notified:
            "stdout Watcher"
         sun.awt.AWTFinalizer@EE320730/EE393900 (key=0xee320730): unowned
        Waiting to be notified:
            "AWT-Finalizer"
         java.io.BufferedInputStream@EE2F0228/EE46B538 (key=0xee2f0228): monitor owner edcc0de0: "New Agent input"
         sun.awt.ScreenUpdater@EE30B590/EE369AA8 (key=0xee30b590): unowned
        Waiting to be notified:
            "Screen Updater"
         sun.awt.motif.MToolkit@EE307D78/EE357268 (key=0xee307d78): monitor owner ef030de0: "AWT-EventQueue-0"
        Waiting to enter:
            "AWT-Motif"
        Waiting to be notified:
            "AWT-Input"
Registered Monitor Dump:
    Thread queue lock: unowned
    Name and type hash table lock: unowned
    String intern lock: unowned
    JNI global reference lock: unowned
    BinClass lock: unowned
    Class loading lock: unowned
    Java stack lock: unowned
    Code rewrite lock: unowned
    Heap lock: unowned
    Has finalization queue lock: unowned
    Finalize me queue lock: unowned
        Waiting to be notified:
            "Finalizer thread"
    Monitor IO lock: unowned
    Child death monitor: unowned
        Waiting to be notified:
            "process reaper"
    Event monitor: unowned
    I/O monitor: unowned
    Alarm monitor: unowned
        Waiting to be notified:
            "Clock"
    Sbrk lock: unowned
    Monitor cache expansion lock: unowned
    Monitor registry: monitor owner ef030de0: "AWT-EventQueue-0"
Thread Alarm Q:
    sys_thread_t 0xedcf0de0 [Timeout in 88 ms]
    sys_thread_t 0xedd20de0 [Timeout in 88 ms]
    sys_thread_t 0xef340de0 [Timeout in 203 ms]
Abort (core dumped)