Debugging help

[Niels Möller]

I've experienced a few more or less reproducible hangs on Neal's Hurd
box (dryden).

One example: I telnet in to the box. Start screen. Start emacs. Type
M-x man RET non-existing-command RET.

Then emacs displays a message saying that the man page can't be found,
and then I lose contact with both emacs and screen.

Logging in again, killing the hanging processes, and running screen
-ls gives

  nisse@dryden:~$ screen -ls
  There is a screen on:
          6098.ttyp0.dryden       (Dead ???)
  Remove dead screens with 'screen -wipe'.
  1 Socket in /var/run/screen/S-nisse.

so appearantly, screen just died.

In another case, lsh-make-seed hanged, typing ^C didn't work, and I
also lost contact with my screen. I logged in again from a different
xterm, and killed the lsh-make-seed process, but I still didn't get
back to the shell where it was started.

Hmm, I'm now trying lsh-make-seed -v --trace --debug, and from the
output, it seems that it hangs in poll. And it's not interruptable
with ^C.

This report is somewhat unstructured, so I guess my question is: How
do I get more information about the failing processes, so I can file
useful bug reports?

/Niels