On a more-or-less stock Red Hat 5.2 system with packages
emacs-X11-20.3-3 and cvs-1.10.2-1 installed, type
C-h i C-s cvs [ret] [ret] C-s troubleshooting [ret] [ret]
and you'll get:
Fatal error (6).zsh: abort (core dumped) emacs -geometry
Which is not what it is supposed to do.
I was unable to reproduce this bug in the test lab. The CVS
troubleshooting page came up properly.