From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753441AbdDKVSM (ORCPT ); Tue, 11 Apr 2017 17:18:12 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:60229 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751020AbdDKVSI (ORCPT ); Tue, 11 Apr 2017 17:18:08 -0400 Date: Tue, 11 Apr 2017 14:18:02 -0700 From: "Paul E. McKenney" To: rostedt@goodmis.org Cc: linux-kernel@vger.kernel.org Subject: There is a Tasks RCU stall warning Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 17041121-0048-0000-0000-000001567A5F X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006919; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000208; SDB=6.00846200; UDB=6.00417363; IPR=6.00624633; BA=6.00005284; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015010; XFM=3.00000013; UTC=2017-04-11 21:18:05 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17041121-0049-0000-0000-0000406B629E Message-Id: <20170411211802.GA19165@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-04-11_16:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1704110164 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Steve, Network connectivity issues... :-/ There is already a Tasks RCU stall warning, but it waits for ten -minutes- before complaining. You can change this with the rcupdate.rcu_task_stall_timeout kernel boot parameter, if you wish. Or did you wait longer than ten minutes? Thanx, Paul