Re: BUG: rcu_sched detected stalls on CPUs

mitko
2017-01-21T07:09:34Z

On 2017-01-20 17:19, Steven Rostedt wrote:
> On Fri, 20 Jan 2017 10:43:50 +0200
> mitko@stz-bg.com wrote:
>
>> [1.] One line summary of the problem:
>>
>> rcu_sched detected stalls on CPUs and few minutes server not respond.
>
> Is this reproducible? Or was this a one time ordeal?

It's happened usual once per day and can't be reproducible. If server
load average is more then
0.70 it's will happened twice per day.

>
>>
>> [2.] Full description of the problem/report:
>>
>> Load of my server (postgres database) isnt big less then 0.50 and when
>> error occured rcu_sched detected stalls on CPUs
>> server freeze and nothing is work for 3-5 minute.
>> No network, no video signal, no keyboard, no mouse. Nothing is worked.
>> After these few minutes everything continue normal.
>> This usual is happend once per day. When I check in google find a lots
>> of ppl complain of this error, but no solution.
>> Do any one know can help me to resolve it ? I spoke with few friends
>> and
>> they trying to convince me the problem is in CPU.
>> I did not believe after a 3 years working CPU suddenly stop working
>> correctly, but I might be wrong.
>>
>> [3.] Keywords (i.e., modules, networking, kernel):
>>
>> kernel
>>
>> [4.] Kernel information
>> [4.1.] Kernel version (from /proc/version):
>>
>> Linux version 4.4.38 (root@hive64) (gcc version 5.4.0 (GCC) ) #2 SMP
>> Sun
>> Dec 11 16:11:02 CST 2016
>>
>
> Have you tried a newer version of the kernel?

No, for the moment I didnt because I can't find new one in slackware
repos.
My last kernel compile was almost 7 years ago and I do not feel safe
now, I guess a lot of things have changed.

>
> -- Steve

Regards,
Mitko