Bug#652593: grub-pc: fails to boot with "unaligned pointer 0x8ef10002" on KVM

[Simon Arnaud]

Package: grub-pc
Version: 1.98+20100804-14+squeeze1
Severity: normal


After installing a virtualized Debian Squeeze on a Fedora 16 host,
it fails to boot with "unaligned pointer 0x8ef10002".
I tried both 'i386' and 'amd64'.

It seems related to the graphics chosen.

With either 'qxl' and 'vmvga', it fails.
With 'cirrus' and 'vga', it boots.

I tried, in cirrus mode :
grub-install /dev/vda
update-grub

but it didn't change anything.

-- Package-specific info:

*********************** BEGIN /proc/mounts
/dev/disk/by-uuid/af3da21d-33e0-4282-aeed-1aedd7266bce / ext4 rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/device.map
(hd0)	/dev/vda
*********************** END /boot/grub/device.map

*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function load_video {
  insmod vbe
  insmod vga
  insmod video_bochs
  insmod video_cirrus
}

insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set af3da21d-33e0-4282-aeed-1aedd7266bce
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  load_video
  insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set af3da21d-33e0-4282-aeed-1aedd7266bce
set locale_dir=($root)/boot/grub/locale
set lang=fr
insmod gettext
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, avec Linux 2.6.32-5-amd64' --class debian --class gnu-linux --class gnu --class os {
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos1)'
	search --no-floppy --fs-uuid --set af3da21d-33e0-4282-aeed-1aedd7266bce
	echo	'Chargement de Linux 2.6.32-5-amd64 ...'
	linux	/boot/vmlinuz-2.6.32-5-amd64 root=UUID=af3da21d-33e0-4282-aeed-1aedd7266bce ro  quiet
	echo	'Chargement du disque mémoire initial ...'
	initrd	/boot/initrd.img-2.6.32-5-amd64
}
menuentry 'Debian GNU/Linux, avec Linux 2.6.32-5-amd64 (mode de dépannage)' --class debian --class gnu-linux --class gnu --class os {
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos1)'
	search --no-floppy --fs-uuid --set af3da21d-33e0-4282-aeed-1aedd7266bce
	echo	'Chargement de Linux 2.6.32-5-amd64 ...'
	linux	/boot/vmlinuz-2.6.32-5-amd64 root=UUID=af3da21d-33e0-4282-aeed-1aedd7266bce ro single 
	echo	'Chargement du disque mémoire initial ...'
	initrd	/boot/initrd.img-2.6.32-5-amd64
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
*********************** END /boot/grub/grub.cfg

-- System Information:
Debian Release: 6.0.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-pc depends on:
ii  debconf [debco 1.5.36.1                  Debian configuration management sy
ii  grub-common    1.98+20100804-14+squeeze1 GRand Unified Bootloader, version 
ii  libc6          2.11.2-10                 Embedded GNU C Library: Shared lib
ii  libdevmapper1. 2:1.02.48-5               The Linux Kernel Device Mapper use
ii  ucf            3.0025+nmu1               Update Configuration File: preserv

grub-pc recommends no packages.

Versions of packages grub-pc suggests:
pn  desktop-base                  <none>     (no description available)

-- debconf information:
  grub-pc/kopt_extracted: false
  grub2/kfreebsd_cmdline:
  grub2/device_map_regenerated:
* grub-pc/install_devices: /dev/vda
  grub-pc/postrm_purge_boot_grub: false
  grub-pc/install_devices_failed_upgrade: true
  grub-pc/disk_description:
* grub2/linux_cmdline:
  grub-pc/install_devices_empty: false
  grub2/kfreebsd_cmdline_default: quiet
  grub-pc/partition_description:
  grub-pc/install_devices_failed: false
  grub-pc/install_devices_disks_changed:
* grub2/linux_cmdline_default: quiet
  grub-pc/chainload_from_menu.lst: true
  grub-pc/mixed_legacy_and_grub2: true