Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753677Ab3GIM01 (ORCPT ); Tue, 9 Jul 2013 08:26:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:5387 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752063Ab3GIM00 (ORCPT ); Tue, 9 Jul 2013 08:26:26 -0400 Message-ID: <51DC016E.9070900@redhat.com> Date: Tue, 09 Jul 2013 08:26:22 -0400 From: Cole Robinson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Dave Airlie CC: qemu-devel@nongnu.org, LKML Subject: Re: [Qemu-devel] sending SEGV to qemu crashes host kernel in Fedora 19 References: In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1393 Lines: 41 On 07/08/2013 09:11 PM, Dave Airlie wrote: > On Tue, Jul 9, 2013 at 10:35 AM, Dave Airlie wrote: >> Hi, >> >> F19 >> kernel-3.9.8-300.fc19.x86_64 >> qemu-kvm-1.4.2-4.fc19.x86_64 >> >> If I start a complete F19 install in the guest and send the qemu >> process a SEGV signal, the host kernel starts giving me random kmalloc >> errors soon after, if I send a normal kill signal things seem fine. >> >> CPU is Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz, on a HP 220z workstation. >> >> I initially blamed bad RAM but this reproduces everytime, and I >> swapped DIMMs around >> >> I haven't tested with upstream kernel/qemu yet, but I wondered if >> anyone else has seen this. >> >> I noticed this because some work I was doing was segfaulting my qemu >> and then my machine would die a few mins later. > > Of course now I read my fedora kernel emails and notice vhost_net does > bad things, > > disabling vhost_net seems to make it work fine, hopefully the next > Fedora kernel will bring the magic fixes. > That issue and another nasty crasher are being tracked here: https://bugzilla.redhat.com/show_bug.cgi?id=980254 - Cole -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/