linux-kernel - [2.6.32.git] commit 1cedae7 breaks gdb

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Date:	Sun, 06 Dec 2009 17:03:20 -0800
From:	walt <w41ter@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>
Subject:  [2.6.32.git] commit 1cedae7 breaks gdb

Hi guys.  This commit:

commit 1cedae72904b85462082dbcfd5190309ba37f8bd
Author: Frederic Weisbecker <fweisbec@...il.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.

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