I'll just do without VirtualBox when testing custom kernel.  I really don't want to mess around with  VirtualBox; I've had to rebuild me VMs several times already, and it  VirtualBox uninstall/install goes wrong I'd be doing it again.

Cant tell whether build-dep linux finished.

==================================

git revert 58e15f5029c75b45adbcb25cd76a36d26a6c4297

produced:

Your name and email address were configured automatically based
on your username and hostname. Please check that they are accurate.

I assume incorrect email address of no significance?

There didn't seem to be any call for <ctrl X>; did I miss something?

during 
fakeroot debian/rules clean
get

cd /home/alan/Data/Downloads/Ubuntu/ToInstall/kernel-custom/ubuntu-maverick/debian/build && kernel-wedge gen-control > /home/alan/Data/Downloads/Ubuntu/ToInstall/kernel-custom/ubuntu-maverick/debian/control
Use of uninitialized value $builddep in split at /usr/share/kernel-wedge/commands/gen-control line 32, <KVERS> line 9.
Use of uninitialized value $builddep in split at /usr/share/kernel-wedge/commands/gen-control line 32, <KVERS> line 10.

during
AUTOBUILD=1 NOEXTRAS=1 fakeroot debian/rules binary-generic
get

  LD      arch/x86/built-in.o

WARNING: arch/x86/built-in.o(.data+0x2eb8): Section mismatch in reference from the variable powernow_driver to the function .init.text:powernow_cpu_init()
The variable powernow_driver references
the function __init powernow_cpu_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, 


WARNING: arch/x86/built-in.o(.data+0x2f78): Section mismatch in reference from the variable longrun_driver to the function .init.text:longrun_cpu_init()
The variable longrun_driver references
the function __init longrun_cpu_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, 

and more like it.  

=====================

  LD      arch/x86/kernel/built-in.o

WARNING: arch/x86/kernel/built-in.o(.data+0x2eb8): Section mismatch in reference from the variable powernow_driver to the function .init.text:powernow_cpu_init()
The variable powernow_driver references
the function __init powernow_cpu_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, 

WARNING: arch/x86/kernel/built-in.o(.data+0x2f18): Section mismatch in reference from the variable longhaul_driver to the function .init.text:longhaul_cpu_init()
The variable longhaul_driver references
the function __init longhaul_cpu_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, 

WARNING: arch/x86/kernel/built-in.o(.data+0x2f78): Section mismatch in reference from the variable longrun_driver to the function .init.text:longrun_cpu_init()
The variable longrun_driver references
the function __init longrun_cpu_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

==============

  LD      drivers/eisa/built-in.o

WARNING: drivers/eisa/built-in.o(.data+0xb0): Section mismatch in reference from the variable pci_eisa_driver to the function .init.text:pci_eisa_init()
The variable pci_eisa_driver references
the function __init pci_eisa_init()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, 

===================

 CC [M]  drivers/ata/sata_sil.o

/home/alan/Data/Downloads/Ubuntu/ToInstall/kernel-custom/ubuntu-maverick/drivers/ata/sata_sil.c: In function ‘sil_host_intr’:
/home/alan/Data/Downloads/Ubuntu/ToInstall/kernel-custom/ubuntu-maverick/drivers/ata/sata_sil.c:442: warning: ‘serror’ may be used uninitialized in this function

Do those count as weird error messages?

Meanwhile, build continuing.  

========================

Finally, I think

  sudo apt-get build-dep linux

installed masses of stuff, which I'd just as soon jettison after it's clear I no longer need it.  How does one work out what to uninstall?  I know how to remove a specific packages, but I think  build-dep linux installed a ton of stuff?