kernel-packages team mailing list archive

[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1352567

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1352567

Title:
  OOPS in cpufreq driver with AMD Kaveri CPU

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Occasionally I get my machine hung completely. Fortunately, I've got and saved 
  oops listing using netconsole before hang, and here it is [1].

  Here is little piece of oops from the link above:

  ===
  [15051.270461] BUG: unable to handle kernel paging request at 00000000ff5ae8e4
  [15051.271583] IP: [<ffffffff8109ae6e>] srcu_notifier_call_chain+0xe/0x20
  …
  [15051.956205] Call Trace:
  [15051.980641]  [<ffffffff81606085>] ? __cpufreq_notify_transition+0x95/0x1e0
  [15052.005640]  [<ffffffff816081ee>] cpufreq_notify_transition+0x3e/0x70
  [15052.030240]  [<ffffffff816083d8>] cpufreq_freq_transition_begin+0xe8/0x130
  [15052.054522]  [<ffffffff813b8940>] ? ucs2_strncmp+0x70/0x70
  [15052.078208]  [<ffffffff816089bf>] __target_index+0xbf/0x1a0
  [15052.101348]  [<ffffffff81608b9c>] __cpufreq_driver_target+0xfc/0x160
  [15052.124250]  [<ffffffff8160b0d4>] od_check_cpu+0xa4/0xb0
  [15052.146789]  [<ffffffff8160c9ec>] dbs_check_cpu+0x16c/0x1c0
  [15052.168935]  [<ffffffff8160b4dd>] od_dbs_timer+0x11d/0x180
  [15052.190607]  [<ffffffff8108e6ff>] process_one_work+0x17f/0x4c0
  [15052.211825]  [<ffffffff8108f46b>] worker_thread+0x11b/0x3f0
  [15052.232490]  [<ffffffff8108f350>] ? create_and_start_worker+0x80/0x80
  [15052.253127]  [<ffffffff81096479>] kthread+0xc9/0xe0
  [15052.273292]  [<ffffffff810963b0>] ? flush_kthread_worker+0xb0/0xb0
  [15052.293487]  [<ffffffff81793efc>] ret_from_fork+0x7c/0xb0
  [15052.313544]  [<ffffffff810963b0>] ? flush_kthread_worker+0xb0/0xb0
  …
  ===

  Also here is my lspci [2] and cpuinfo [3] as well.

  Vanilla 3.15.8 and 3.16.0 are affected as well as latest Ubuntu 3.13
  kernel.

  No visible reason to trigger the bug. After hang machine doesn't respond via 
  network, there's no disk IO, and also it doesn't respond to pressing power 
  button in order to perform soft off.

  And here is kernel bugzilla bugreport [4].

  [1] https://gist.github.com/085af9da81197faf6637
  [2] https://gist.github.com/318ebda5576b099590b8
  [3] https://gist.github.com/9c1307463c7ad6835b2d
  [4] https://bugzilla.kernel.org/show_bug.cgi?id=81701
  --- 
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2014-07-30 (5 days ago)
  InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Tags:  trusty
  Uname: Linux 3.16.0-031600-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1352567/+subscriptions