post-factum, please execute the following in the default Ubuntu kernel (not
mainline):
apport-collect 1352567
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: Confirmed => 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:
Incomplete
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
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
