Bug#544227: linux-source-2.6.30: mount dm crypt root fs fails when building from stock config

[Mark Hedges <hedges@scriptdolphin.org>]

Package: linux-source-2.6.30
Version: 2.6.30-6
Severity: important


I have an unencrypted /boot partition, then / and swap are dm_crypt targets.

I tried copying /boot/config-2.6.30-1-486 to 
/usr/src/linux-source-2.6.30/.config then made the kernel without 
modifications using:

  CONCURRENCY_LEVEL=3 make-kpkg --revision 'maggie.2.6.30+test' \
  --append-to-version '-maggie-30+test' --initrd \
  --config menuconfig kernel_image

When I install and boot the result, I get a kernel panic after
attaching the keyboard.  I wrote this down with pen and paper,
how quaint:

List of all partitions:
No filesystem could mount root, tried:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Pid: 1, comm: swapper Not tainted 2.6.30-maggie-30+test #2
Call Trace:
c0305321    panic+0x38/0xd7
c03facde    mount_block_root+0x1ec/0x1fb
c03fad26    mount_root+0x39/0x4d
c03fae77    prepare_namespace+0x13d/0x163
c03fa4c6    kernel_init+0xb4/0xbd
c03fa412    kernel_init+0x0/0xbd
c01037e7    kernel_thread_helper+0x7/0x10

BTW while I was writing that down, the fan was off, and it overheated.
BIOS paused trying to reboot, waiting for the laptop to cool.
I turned it off for a while and then it was fine.

Mark

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (990, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-1-486
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages linux-source-2.6.30 depends on:
ii  binutils              2.19.51.20090723-1 The GNU assembler, linker and bina
ii  bzip2                 1.0.5-3            high-quality block-sorting file co

Versions of packages linux-source-2.6.30 recommends:
ii  gcc                           4:4.3.3-9  The GNU C compiler
ii  libc6-dev [libc-dev]          2.9-23     GNU C Library: Development Librari
ii  make                          3.81-6     An utility for Directing compilati

Versions of packages linux-source-2.6.30 suggests:
ii  kernel-package         12.017            A utility for building Linux kerne
ii  libncurses5-dev [ncurs 5.7+20090803-1+b1 developer's libraries and docs for
pn  libqt3-mt-dev          <none>            (no description available)

-- no debconf information