[2.6.32.git] commit 1cedae7 breaks gdb

[walt <w41ter@gmail.com>]

Hi guys.  This commit:

commit 1cedae72904b85462082dbcfd5190309ba37f8bd
Author: Frederic Weisbecker <fweisbec@gmail.com>
Date:   Wed Dec 2 07:32:16 2009 +0100

     hw-breakpoints: Keep track of user disabled breakpoints

breaks debugging with gdb (at least gdb-7.0, anyway).

For example, if you start firefox with the -g flag, it will run
in gdb.  When running a kernel with this commit, gdb will stop
with the message: "Couldn't write debug register: No space left
on device".  When trying to quit gdb by typing 'q', the process
hangs forever.

This seems to be related to the size of the program being debugged.
Running /bin/ls with gdb, for example, works normally.  But large
programs like firefox, thunderbird, or evolution (from gnome) all
trigger the same error message.

Can anyone reproduce this?

Thanks.