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kill of windows process hangs


I've started this p4d process:

xp-sp3$ ps 
      PID    PPID    PGID     WINPID   TTY     UID    STIME COMMAND
     2668       1    3388        924  pty0    1003 15:40:14 /cygdrive/c/Program Files/Perforce/Server/p4d
     4048     760    4048       3456  pty0    1003 15:48:33 /usr/bin/ps
      760     220     760        632  pty0    1003 13:44:59 /usr/bin/bash

It's a Windows executable, not cygwin.

I'm trying to kill it.  All of these attempts do not kill
the process, and themselves hang, blocking ctrl-c:

    (bash)$ kill 2668
    $ pkill 2668
    $ pgrep 2668

I can terminate them in Windows Task Manager, with "End Process"
button.

This approach hangs, but is ctrl-c killable:

    $ /bin/kill 2668

I tried with "-f", and various signals.  No difference,
except -0 returns immediately as you'd hope.

The last few lines of strace before hanging are:

 ...
 1678   59114 [main] kill 744 kill0: kill (2668, 15)
  150   59264 [main] kill 744 open_shared: name cygpid.2668, n 2668, shared 0x700000 (wanted 0x0), h 0x5E8, *m 6
76206  135470 [main] kill 744 sig_send: sendsig 0x71C, pid 2668, signal 15, its_me 0

This used to work, at least good-old bash kill did.  I either updated
p4d or cygwin itself in the last two months, or both, and now no luck.

I can kill p4d with Task Manager.

I would be happy to have another way to kill the task.

Thanks for any advice,

		-- Pete

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