* [Bug 81701] New: OOPS in cpufreq driver with AMD Kaveri CPU
@ 2014-08-04 21:45 bugzilla-daemon
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From: bugzilla-daemon @ 2014-08-04 21:45 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
Bug ID: 81701
Summary: OOPS in cpufreq driver with AMD Kaveri CPU
Product: Power Management
Version: 2.5
Kernel Version: 3.16.0
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: cpufreq
Assignee: cpufreq@vger.kernel.org
Reporter: oleksandr@natalenko.name
Regression: No
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.
[1] https://gist.github.com/085af9da81197faf6637
[2] https://gist.github.com/318ebda5576b099590b8
[3] https://gist.github.com/9c1307463c7ad6835b2d
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* [Bug 81701] OOPS in cpufreq driver with AMD Kaveri CPU
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From: bugzilla-daemon @ 2014-08-08 14:49 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #1 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145781
--> https://bugzilla.kernel.org/attachment.cgi?id=145781&action=edit
/proc/cpuinfo
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* [Bug 81701] OOPS in cpufreq driver with AMD Kaveri CPU
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To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #2 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145791
--> https://bugzilla.kernel.org/attachment.cgi?id=145791&action=edit
lsb_release -rd
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* [Bug 81701] OOPS in cpufreq driver with AMD Kaveri CPU
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From: bugzilla-daemon @ 2014-08-08 14:51 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #3 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145801
--> https://bugzilla.kernel.org/attachment.cgi?id=145801&action=edit
Stacktrace via netconsole
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From: bugzilla-daemon @ 2014-08-08 14:52 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #4 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145811
--> https://bugzilla.kernel.org/attachment.cgi?id=145811&action=edit
lspci output
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From: bugzilla-daemon @ 2014-08-08 14:54 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #5 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Disabling cpufreq section in kernel configuration seems to work around this
issue.
Using NOHZ_IDLE instead of NOHZ_FULL doesn't fix the issue (I also suspected
RCU bugs or so).
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To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #6 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145821
--> https://bugzilla.kernel.org/attachment.cgi?id=145821&action=edit
sudo lspci -vv output
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #7 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145831
--> https://bugzilla.kernel.org/attachment.cgi?id=145831&action=edit
/proc/modules
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From: bugzilla-daemon @ 2014-08-08 15:03 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
Oleksandr Natalenko <oleksandr@natalenko.name> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #145821|sudo lspci -vv output |sudo lspci -vvv output
description| |
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #8 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Launchpad bugreport:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1352567
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #9 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145851
--> https://bugzilla.kernel.org/attachment.cgi?id=145851&action=edit
.config
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #10 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145861
--> https://bugzilla.kernel.org/attachment.cgi?id=145861&action=edit
/proc/iomem
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #11 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145871
--> https://bugzilla.kernel.org/attachment.cgi?id=145871&action=edit
/proc/ioports
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #12 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145881
--> https://bugzilla.kernel.org/attachment.cgi?id=145881&action=edit
/proc
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https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #13 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Created attachment 145891
--> https://bugzilla.kernel.org/attachment.cgi?id=145891&action=edit
/proc/scsi/scsi
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From: bugzilla-daemon @ 2014-08-08 17:24 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #14 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Also the issue happens no matter whether acpi-cpufreq is built-in or compiled
as module.
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From: bugzilla-daemon @ 2014-08-12 9:19 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
Ayan <ayankumarh@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ayankumarh@gmail.com
--- Comment #15 from Ayan <ayankumarh@gmail.com> ---
I am trying to recreate the issue on my system. I am running 3.16 kernel on a
x86 machine. I have made a small script which tries to load the cpu( for
increasing the cpu frequency) and then sleeps for some time( to decrease the
cpu frequency). My cpufreq governor is "ondemand".
My request to you is to use the same script which I will upload and provide me
the last log of the script before the system hangs up. I have been executing
the script for the last one hour but I have not observed any hang-up
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To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #16 from Ayan <ayankumarh@gmail.com> ---
Created attachment 146301
--> https://bugzilla.kernel.org/attachment.cgi?id=146301&action=edit
Script to increase/decrease the cpu load
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From: bugzilla-daemon @ 2014-08-12 19:01 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #17 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
@Ayan: I've put pr_info to cpufreq transition notifiers, and what I can see is
that frequency changes often enough (several times per second), so there's no
need to do extra CPU load/relax cycles.
Also, machine could hang after 2 hours of successful uptime, or after 25 hours,
and there's no obvious reason for hang.
To answer your question, I've tried your script (stress-testing for several
hours), and got nohing as well, but that is not significant result.
You may follow linux-pm thread where Viresh tells me how to debug this issue:
http://marc.info/?l=linux-pm&m=140786965520720&w=2
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From: bugzilla-daemon @ 2014-10-28 4:28 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
Len Brown <lenb@kernel.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lenb@kernel.org
Summary|OOPS in cpufreq driver with |OOPS in cpufreq driver with
|AMD Kaveri CPU |AMD Kaveri CPU - AMD
| |Athlon(tm) 5150 APU with
| |Radeon(tm) R3
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From: bugzilla-daemon @ 2014-11-11 10:42 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
--- Comment #18 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
It seems that this bug has nothing to do with acpi-cpufreq code but with
another ACPI area.
With ACPI enabled kernel may hang in a day or in a week (never survived more
than approx. 2 weeks). With acpi=off it seems to work OK. For instance, I had
to boot Ubuntu installer with acpi disabled to finish it successfully.
Usually, hanging is not accompanied by panic log. Only small vertical red
lines appear on the screen near letters (tried to use plaintext 80x25 console
without radeon and got the same issue).
Still observing this for 3.16 kernel.
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From: bugzilla-daemon @ 2015-04-14 15:47 UTC (permalink / raw)
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=81701
Len Brown <lenb@kernel.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #19 from Len Brown <lenb@kernel.org> ---
Subject: Re: [BUG] oops in cpufreq driver with AMD Kaveri CPU
From: Oleksandr Natalenko <oleksandr () natalenko ! name>
Date: 2014-11-18 19:07:51
acpi=off as well as disabling ASPM and NMI watchdog didn't help
Now trying to update BIOS.
P.S. Still affected while using 3.17.2 kernel.
ref. http://marc.info/?l=linux-acpi&m=141633767812764&w=2
Did the BIOS update help?
Are you certain that running an old kernel is stable?
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Oleksandr Natalenko <oleksandr@natalenko.name> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |CLOSED
Resolution|--- |INVALID
--- Comment #20 from Oleksandr Natalenko <oleksandr@natalenko.name> ---
Definitely not a kernel bug.
I've replaced RAM module with another one and the issue went away.
No idea why oopses refered to ACPI, but they seem to be the result of simple
hardware incompatibility.
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