Public bug reported:
The following trace appears during a vivid desktop installation with
encrypted home dir setup.
2014-11-04T13:08:50.904446+00:00 utah-29294-vivid-amd64 kernel: [ 245.136823]
gtk-update-icon cpuset=session-c1.scope mems_allowed=0
2014-11-04T13:08:50.904451+00:00 utah-29294-vivid-amd64 kernel: [ 245.136831]
CPU: 0 PID: 9528 Comm: gtk-update-icon Not tainted 3.16.0-24-generic #32-Ubuntu
2014-11-04T13:08:50.904453+00:00 utah-29294-vivid-amd64 kernel: [ 245.136832]
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
2014-11-04T13:08:50.904454+00:00 utah-29294-vivid-amd64 kernel: [ 245.136835]
0000000000000000 ffff8800089bb908 ffffffff8177fcbc ffff880019f265e0
2014-11-04T13:08:50.904455+00:00 utah-29294-vivid-amd64 kernel: [ 245.136837]
ffff8800089bb970 ffffffff8177c3e8 0000000000000003 0000000000000000
2014-11-04T13:08:50.904456+00:00 utah-29294-vivid-amd64 kernel: [ 245.136839]
ffff88001fffae28 ffff8800089bb940 0000000000000206 ffffffff81c670c0
2014-11-04T13:08:50.904457+00:00 utah-29294-vivid-amd64 kernel: [ 245.136843]
Call Trace:
2014-11-04T13:08:50.904458+00:00 utah-29294-vivid-amd64 kernel: [ 245.136859]
[<ffffffff8177fcbc>] dump_stack+0x45/0x56
2014-11-04T13:08:50.904459+00:00 utah-29294-vivid-amd64 kernel: [ 245.136862]
[<ffffffff8177c3e8>] dump_header+0x9e/0x205
2014-11-04T13:08:50.904461+00:00 utah-29294-vivid-amd64 kernel: [ 245.136870]
[<ffffffff8116cea5>] oom_kill_process+0x205/0x360
2014-11-04T13:08:50.904462+00:00 utah-29294-vivid-amd64 kernel: [ 245.136872]
[<ffffffff8116d68d>] out_of_memory+0x4cd/0x510
2014-11-04T13:08:50.904463+00:00 utah-29294-vivid-amd64 kernel: [ 245.136879]
[<ffffffff8117454e>] __alloc_pages_nodemask+0xb6e/0xbb0
2014-11-04T13:08:50.904463+00:00 utah-29294-vivid-amd64 kernel: [ 245.136885]
[<ffffffff811b6a41>] alloc_pages_current+0xb1/0x160
2014-11-04T13:08:50.904464+00:00 utah-29294-vivid-amd64 kernel: [ 245.136888]
[<ffffffff81169497>] __page_cache_alloc+0xa7/0xc0
2014-11-04T13:08:50.904465+00:00 utah-29294-vivid-amd64 kernel: [ 245.136890]
[<ffffffff8116bb67>] filemap_fault+0x1b7/0x410
2014-11-04T13:08:50.904466+00:00 utah-29294-vivid-amd64 kernel: [ 245.136896]
[<ffffffff81194c6d>] __do_fault+0x3d/0xc0
2014-11-04T13:08:50.904468+00:00 utah-29294-vivid-amd64 kernel: [ 245.136899]
[<ffffffff81197210>] do_read_fault.isra.57+0x50/0x300
2014-11-04T13:08:50.904469+00:00 utah-29294-vivid-amd64 kernel: [ 245.136902]
[<ffffffff81199286>] handle_mm_fault+0x896/0xf90
2014-11-04T13:08:50.904470+00:00 utah-29294-vivid-amd64 kernel: [ 245.136910]
[<ffffffff8105ce42>] __do_page_fault+0x1c2/0x580
2014-11-04T13:08:50.904471+00:00 utah-29294-vivid-amd64 kernel: [ 245.136919]
[<ffffffff810a9de8>] ? __enqueue_entity+0x78/0x80
2014-11-04T13:08:50.904472+00:00 utah-29294-vivid-amd64 kernel: [ 245.136922]
[<ffffffff810abb55>] ? set_next_entity+0x95/0xb0
2014-11-04T13:08:50.904472+00:00 utah-29294-vivid-amd64 kernel: [ 245.136940]
[<ffffffff810116a6>] ? __switch_to+0x1d6/0x5e0
2014-11-04T13:08:50.904474+00:00 utah-29294-vivid-amd64 kernel: [ 245.136943]
[<ffffffff8105d2b1>] trace_do_page_fault+0x41/0x100
2014-11-04T13:08:50.904475+00:00 utah-29294-vivid-amd64 kernel: [ 245.136950]
[<ffffffff81055659>] do_async_page_fault+0x29/0xe0
2014-11-04T13:08:50.904476+00:00 utah-29294-vivid-amd64 kernel: [ 245.136957]
[<ffffffff81789db8>] async_page_fault+0x28/0x30
Steps to reproduce:
1. Install utah:
sudo apt-add-repository -y ppa:utah/stable
sudo apt-get update
sudo apt-get install utah
2. Make the iso readable by the user utah
3. Run
"sudo -u utah -i run_utah_tests.py -i /path/to/the/vivid-desktop-amd64.iso
-p lp:ubuntu-test-cases/desktop/preseeds/encrypted_home.cfg
lp:ubuntu-test-cases/desktop/runlists/encrypted_home.run -f /var/log/installer
-x /etc/utah/bridged-network-vm.xml"
Now the trace above could be seen.
The installation log containing the kernel log is attached.
Note: This is reproducible with vm's provisioned with 512 MB memory,
which is the default value in /etc/utah/bridged-network-vm.xml in the
host machine. With 1G RAM this kernel trace is not reproducible.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: utopic
** Attachment added: "utah-29294-install.log"
https://bugs.launchpad.net/bugs/1389304/+attachment/4252919/+files/utah-29294-install.log
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https://bugs.launchpad.net/bugs/1389304
Title:
Kernel trace during encrypted home dir vivid desktop installations
(async_page_fault)
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