From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751009AbdAUHJe (ORCPT ); Sat, 21 Jan 2017 02:09:34 -0500 Received: from stz-bg.com ([46.40.123.212]:13411 "EHLO mail.stzbg.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbdAUHJ0 (ORCPT ); Sat, 21 Jan 2017 02:09:26 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Sat, 21 Jan 2017 09:09:15 +0200 From: mitko@stz-bg.com To: Steven Rostedt Cc: "Paul E. McKenney" , Josh Triplett , linux-kernel@vger.kernel.org, Mathieu Desnoyers , Lai Jiangshan Subject: Re: BUG: rcu_sched detected stalls on CPUs In-Reply-To: <20170120101912.00498a6e@gandalf.local.home> References: <20170120101912.00498a6e@gandalf.local.home> Message-ID: User-Agent: Roundcube Webmail/1.2.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Have you tried a newer version of the kernel?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