Comment 12 for bug 791364

I updated the domU and tried to boot the current linux-image-3.0.0-7-server which unfortunately did not succeed.
The update and the apport-collect messages were done by booting linux-image-2.6.38-8-server.
When booting 3.0.0-7, the machine hangs with the following output:

[...udev error repeated lots of times...]
udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

[ 723.020104] INFO: task modprobe:147 blocked for more than 120 seconds.
[ 723.023759] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 723.031340] modprobe D ffffffff81805120 0 147 85 0x00000004
[ 723.038795] ffff88001e1c3ce8 0000000000000086 ffff88001e1c3cd8 ffffffff8139f02c
[ 723.047501] ffff88001e1c3fd8 ffff88001e1c3fd8 ffff88001e1c3fd8 0000000000012a40
[ 723.056203] ffff88001ca08000 ffff88001e2516f0 000000000000632c 7fffffffffffffff
[ 723.064872] Call Trace:
[ 723.067572] [<ffffffff8139f02c>] ? vt_console_print+0x2bc/0x3a0
[ 723.073365] [<ffffffff815faca5>] schedule_timeout+0x2a5/0x320
[ 723.079017] [<ffffffff810329a9>] ? default_spin_lock_flags+0x9/0x10
[ 723.085111] [<ffffffff810869b2>] ? up+0x32/0x50
[ 723.089672] [<ffffffff810329a9>] ? default_spin_lock_flags+0x9/0x10
[ 723.095784] [<ffffffff815f9cff>] wait_for_common+0xdf/0x180
[ 723.101280] [<ffffffff81057330>] ? try_to_wake_up+0x200/0x200
[ 723.106916] [<ffffffff815f9e7d>] wait_for_completion+0x1d/0x20
[ 723.112634] [<ffffffff8107c9ad>] flush_work_sync+0x4d/0x60
[ 723.118044] [<ffffffff81078d80>] ? do_work_for_cpu+0x30/0x30
[ 723.123635] [<ffffffffa003bba8>] floppy_init+0x52f/0x5ce [floppy]
[ 723.129568] [<ffffffffa003b000>] ? 0xffffffffa003afff
[ 723.134624] [<ffffffffa003bc47>] ? floppy_init+0x5ce/0x5ce [floppy]
[ 723.140754] [<ffffffffa003bc95>] floppy_module_init+0x4e/0x3b9 [floppy]
[ 723.147166] [<ffffffff81002042>] do_one_initcall+0x42/0x180
[ 723.152675] [<ffffffff8109f3de>] sys_init_module+0xbe/0x230
[ 723.158176] [<ffffffff81604882>] system_call_fastpath+0x16/0x1b
[ 723.164015] INFO: task sh:187 blocked for more than 120 seconds.
[ 723.169820] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 723.177396] sh D ffffffff81805120 0 187 1 0x00000000
[ 723.184897] ffff88001e2e18a8 0000000000000086 0000000000000000 ffff88001f7fcc00
[ 723.193594] ffff88001e2e1fd8 ffff88001e2e1fd8 ffff88001e2e1fd8 0000000000012a40
[ 723.202263] ffff88001ca08000 ffff88001e2e96f0 0000000000000002 7fffffffffffffff
[ 723.210953] Call Trace:
[ 723.213620] [<ffffffff815faca5>] schedule_timeout+0x2a5/0x320
[ 723.219237] [<ffffffff8115d040>] ? __mem_cgroup_commit_charge+0x70/0xc0
[ 723.225642] [<ffffffff810329a9>] ? default_spin_lock_flags+0x9/0x10
[ 723.231740] [<ffffffff815f9cff>] wait_for_common+0xdf/0x180
[ 723.237218] [<ffffffff81057330>] ? try_to_wake_up+0x200/0x200
[ 723.242867] [<ffffffff815f9e7d>] wait_for_completion+0x1d/0x20
[ 723.248592] [<ffffffff8107ca4e>] flush_work+0x2e/0x40
[ 723.253636] [<ffffffff81078d80>] ? do_work_for_cpu+0x30/0x30
[ 723.259184] [<ffffffff81392f95>] tty_flush_to_ldisc+0x15/0x20
[ 723.264841] [<ffffffff8138d254>] n_tty_poll+0x64/0x1e0
[ 723.269940] [<ffffffff81389dc2>] tty_poll+0x92/0xa0
[ 723.274839] [<ffffffff81178792>] do_poll.isra.4+0x102/0x290
[ 723.280337] [<ffffffff81179799>] do_sys_poll+0x1b9/0x240
[ 723.285625] [<ffffffff81178410>] ? poll_freewait+0xe0/0xe0
[ 723.291037] [<ffffffff813918cb>] ? put_ldisc+0x5b/0xc0
[ 723.296137] [<ffffffff8139193e>] ? tty_ldisc_deref+0xe/0x10
[ 723.301618] [<ffffffff8139068e>] ? tty_set_termios+0x10e/0x270
[ 723.307326] [<ffffffff812e1d4e>] ? radix_tree_lookup_slot+0xe/0x10
[ 723.313360] [<ffffffff811081ee>] ? find_get_page+0x1e/0x90
[ 723.318764] [<ffffffff81109f47>] ? filemap_fault+0x87/0x3c0
[ 723.324279] [<ffffffff8110788a>] ? unlock_page+0x2a/0x40
[ 723.329528] [<ffffffff8112a219>] ? __do_fault+0x439/0x510
[ 723.334880] [<ffffffff8112d50a>] ? handle_pte_fault+0xfa/0x210
[ 723.340598] [<ffffffff8112d9d8>] ? handle_mm_fault+0x1f8/0x350
[ 723.346372] [<ffffffff81600050>] ? do_page_fault+0x210/0x530
[ 723.351950] [<ffffffff8138d8a0>] ? process_echoes+0x30/0x30
[ 723.357436] [<ffffffff81165e00>] ? vfs_write+0x110/0x180
[ 723.362690] [<ffffffff81179906>] sys_poll+0x76/0x110
[ 723.367659] [<ffffffff81604882>] system_call_fastpath+0x16/0x1b
udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

[...udev error repeated lots of times...]

udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

[ 1994.980069] INFO: rcu_sched_state detected stall on CPU 0 (t=269277 jiffies)
[ 4894.160143] INFO: rcu_sched_state detected stall on CPU 0 (t=489180 jiffies)
[ 4894.163328] INFO: rcu_sched_state detected stalls on CPUs/tasks: { 0} (detected by 1, t=489180 jiffies)
udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

udevd[85]: timeout: killing '/sbin/modprobe -bv acpi:PNP0700:' [147]

[...udev error repeated lots of times...]