os-prober will cause gparted crashed when trying install with 2008/10/13's desktop cd

[ZhengPeng Hou]

Oct 13 11:52:03 ubuntu os-prober: debug: os detected by /usr/lib/os-probes/50mounted-tests
Oct 13 11:52:03 ubuntu os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda7
Oct 13 11:52:03 ubuntu os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda8
Oct 13 11:52:03 ubuntu kernel: [ 716.023460] cramfs: wrong magic
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: mounted as ext3 filesystem
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/10freedos
Oct 13 11:52:03 ubuntu kernel: [ 716.062501] kjournald starting. Commit interval 5 seconds
Oct 13 11:52:03 ubuntu kernel: [ 716.062527] EXT3-fs: mounted filesystem with ordered data mode.
Oct 13 11:52:03 ubuntu 10freedos: debug: /dev/sda8 is not a FAT partition: exiting
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/10qnx
Oct 13 11:52:03 ubuntu 10qnx: debug: /dev/sda8 is not a QNX4 partition: exiting
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/20microsoft
Oct 13 11:52:03 ubuntu 20microsoft: debug: /dev/sda8 is not a MS partition: exiting
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/30utility
Oct 13 11:52:03 ubuntu 30utility: debug: /dev/sda8 is not a FAT partition: exiting
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/40lsb
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/70hurd
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/80minix
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/90linux-distro
Oct 13 11:52:03 ubuntu 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/90solaris
Oct 13 11:52:03 ubuntu ubiquity[19138]: Device /dev/sda8 not found in os-prober output
Oct 13 11:52:03 ubuntu ubiquity[19138]: switched to page stepPartAuto
Oct 13 11:52:20 ubuntu ubiquity[19138]: debconffilter_done: Partman (current: Partman)
Oct 13 11:52:20 ubuntu ubiquity[19138]: dbfilter_handle_status: ('Partman', 141)

my hardisk partition scheme:
ubuntu@ubuntu:~$ sudo fdisk -l /dev/sda

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xc5018f96

   Device Boot Start End Blocks Id System
/dev/sda1 1 2432 19535008+ 83 Linux
/dev/sda2 2433 19457 136753312+ 5 Extended
/dev/sda5 2433 6079 29294496 83 Linux
/dev/sda6 6080 9118 24410736 83 Linux
/dev/sda7 9119 9726 4883728+ 82 Linux swap / Solaris
/dev/sda8 9727 19457 78164226 83 Linux

[ZhengPeng Hou (zhengpeng-hou)]

ubuntu@ubuntu:~$ locale
LANG=zh_CN.UTF-8
LC_CTYPE="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_MONETARY="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_PAPER="zh_CN.UTF-8"
LC_NAME="zh_CN.UTF-8"
LC_ADDRESS="zh_CN.UTF-8"
LC_TELEPHONE="zh_CN.UTF-8"
LC_MEASUREMENT="zh_CN.UTF-8"
LC_IDENTIFICATION="zh_CN.UTF-8"
LC_ALL=

[Colin Watson (cjwatson)]

gparted is not mentioned anywhere in these logs. Where did your mention of it come from?

Why do you believe os-prober caused this? Yes, it happens right before the crash in the logs, but that doesn't mean it's the cause.

Please attach /var/log/partman and /var/log/installer/debug.

[Brian Burch (brian-pingtoo)]

I just tried installing intrepid to a spare partition on a disk that already has a windows system and a working hardy system. The install appears to have worked OK, but it has reported the same or very similar crash in os-prober. The crash reporter fails because the component is not a valid package (or something similar).

I have attached the crash dump, partman and installer debug logs (also syslog in case it is useful).