Ubuntu 11.10 freezes during installation on Athlon XP. Segfault in BusyBox while setting up apparmor. Repeatable.

[Franz Apeltauer]

Oneiric freezes during installation.

a) From Live CD: "Install Ubuntu icon" opens a new window, where I can choose the language. But it won't let me continue, only quit. No matter, which language I choose.
   When I try to start the installer again, the GUI disappears, the text console appears, with the mouse cursor on top. Cannot switch terminals with Ctrl-Alt-F1/2/3. Only Alt-SysReq-E/U/K/B possible.

b) When I try to install from the Alternate CD:
Everything works fine ... install basic system, enter username, configuring apt, no automatic update, configuring language-pack-en-base, tasksel additional software (none chosen) ...
up to the point "Configuring apparmor". Then system freezes and the Shift-Lock and Scroll-Lock LEDs on the keyboard begin to flash. No Ctrl-AltF1/2/..., no Alt-SysReq-E/B/...

Probably this is not relevant for the problem, just to let you know: I ran both installs via netboot.

CPU: Athlon XP (0.13)
Chipset: VIA KT400(A)/600

[Franz Apeltauer (franz-apeltauer)]

In all cases it was a fresh install of Ubuntu 11.10.

[Franz Apeltauer (franz-apeltauer)]

Verified, that memtest reports no errors. Ok. (System worked fine all the time, but who knows ...)

Installed a few times more, always freezes while working on apparmor.

The last line of the syslog is: "in-target: Setting up apparmor (2.7.0~beta1+bzr1774-1ubuntu2) ..."

The console output after that is:
[ 574.367268] busybox[1]: segfault at 95f7504 ip 08073fc9 sp bf9ec98c error 4 in busybox[8048000+4a000]
[ 574.478310] Kernel panic - not syncing: Attempted to kill init! │
[ 574.549267] Pid: 1, comm: busybox Not tainted 3.0.0-12-generic #20-Ubuntu┘
[ 574.630520] Call Trace:
[ 574.659831] [<c1518c98>] ? printk+0x2d/0x2f
[ 574.710876] [<c1518b76>] panic+0x5c/0x151
[ 574.759850] [<c104b244>] forget_original_parent+0x1e4/0x1f0
[ 574.827553] [<c152c6fd>] ? _raw_spin_lock_irqsave+0x2d/0x40
[ 574.895233] [<c104b263>] exit_notify+0x13/0x140
[ 574.950452] [<c104ba6d>] do_exit+0x1ad/0x3a0
[ 575.002545] [<c104bdb8>] do_group_exit+0x38/0xa0
[ 575.058807] [<c105a6b5>] get_signal_to_deliver+0x215/0x3c0
[ 575.125497] [<c10e5324>] ? free_pages+0x34/0x40
[ 575.180773] [<c152fa00>] ? vmalloc_fault+0xee/0xee
[ 575.239104] [<c1002801>] do_signal+0x61/0x110
[ 575.292244] [<c152a4d1>] ? schedule+0x2f1/0x680
[ 575.347458] [<c152fe9b>] ? do_page_fault+0x49b/0x4a0
[ 575.407868] [<c1049ad0>] ? wait_task_continued+0x140/0x140
[ 575.474522] [<c1002ad5>] do_notify_resume+0x75/0x90
[ 575.533898] [<c152c9b0>] work_notifysig+0x13/0x1b