From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gwu.lbox.cz ([62.245.111.132]:34296 "EHLO gwu.lbox.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751007AbeBIJ4k (ORCPT ); Fri, 9 Feb 2018 04:56:40 -0500 Received: from linuxbox.linuxbox.cz (linuxbox.linuxbox.cz [10.76.66.10]) by gwu.lbox.cz (Sendmail) with ESMTPS id w199ubNX024469 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Fri, 9 Feb 2018 10:56:37 +0100 Date: Fri, 9 Feb 2018 10:56:37 +0100 From: Nikola Ciprich To: stable@vger.kernel.org Cc: nik@linuxbox.cz Subject: 4.14.x - KVM guests crashing Message-ID: <20180209095637.GA14309@pcnci.linuxbox.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: stable-owner@vger.kernel.org List-ID: Hi, not sure whether this is the best list to ask for that, but maybe somebody from -stable interested people has hit similar problem.. if it's not appropriate list to ask/report, please let me know since we started rolling to 4.14.x kernels, we've experienced multiple KVM guest panics (with 4.14 on hosts) We've first hit it with 4.14.12, yesterday I had similar problem with 4.14.16. backtraces can be observed here: http://nik.lbox.cz/download/guest-panic-host-4.14.12.png http://nik.lbox.cz/download/guest-panic-host-4.14.16.png sorry I don't have anything more complete they are a bit different, but there are some similarities (ie double_fault) also important to note, both are from different host systems. after reverting hosts to 4.4, crashes are gone. my question is, did anyone hit similar problem? Is this something know, maybe fixed in 4.14.17? (I'll give 4.14.17 try anyways I suppose) (or latest git?) could it be related to page table isolation enabled hosts? btw hosts are running x86_64 centos 7, guests are either centos 6 or centos 7 If I could provide any further info, let me know BR nik -- ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28.rijna 168, 709 00 Ostrava tel.: +420 591 166 214 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@linuxbox.cz -------------------------------------