From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC058C2D0A3 for ; Thu, 29 Oct 2020 17:45:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1776820720 for ; Thu, 29 Oct 2020 17:45:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="FNNzedcz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1776820720 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kYBzf-0000C5-2n for qemu-devel@archiver.kernel.org; Thu, 29 Oct 2020 13:45:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42502) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kYBvc-0005YO-SS for qemu-devel@nongnu.org; Thu, 29 Oct 2020 13:41:38 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:26417) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kYBva-0006cl-FK for qemu-devel@nongnu.org; Thu, 29 Oct 2020 13:41:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603993292; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=NFoxW9FEp1PMI0/ZHaScrJsOS+WkAmfpHnkiGkjxXyI=; b=FNNzedcz1QfOL8j4dexD5WUEQTkeaIqVZ/7lm37QCKzPksbwoVWxHT5A1yQDt4IGZ6w7on /YsAWRpkc452JOekd+LhFOZergw79rYxwEwV5kbbIrv/WgQionI9A/LnQ6wwp+RE+ED8kz KBRx8xmyEEqKjGDe/n9zJGyxuMTVrIE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-467-i89KmzDzN02FvqTonV-_MA-1; Thu, 29 Oct 2020 13:41:29 -0400 X-MC-Unique: i89KmzDzN02FvqTonV-_MA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 583671018F7C; Thu, 29 Oct 2020 17:41:28 +0000 (UTC) Received: from work-vm (ovpn-114-233.ams2.redhat.com [10.36.114.233]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 632795C22D; Thu, 29 Oct 2020 17:41:27 +0000 (UTC) Date: Thu, 29 Oct 2020 17:41:24 +0000 From: "Dr. David Alan Gilbert" To: Peter Maydell Subject: Re: recent flakiness (intermittent hangs) of migration-test Message-ID: <20201029174124.GD3335@work-vm> References: MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.14.6 (2020-07-11) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/29 00:47:54 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: QEMU Developers , Juan Quintela Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Peter Maydell (peter.maydell@linaro.org) wrote: > Recently I've seen the 'make check' migration-test developing an > intermittent hang; I've seen this now on aarch32 host several times > and also on s390x host. The symptom is that the test just hangs > with a couple of child qemu processes sitting around doing nothing. > ^Cing out of 'make check' doesn't kill the qemu processes; they > seem to need a 'kill -9'. If you can send us a copy of the ps -eaf of the qemu commandlines in the failing case it would be interesting to see. > Sorry for the low-information-density bug report, but I don't really > have time at the moment to debug failures in merge build test runs > because the queue of stuff still to merge is enormous... If you get a moment to breath then a backtrace of the migration-test process itself would be useful to see where it's hanging. Dave > thanks > -- PMM > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK