From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerd Hoffmann Subject: Re: qemu hangs until a signal is delivered when running Fedora 14 i386 with -smp 2 Date: Fri, 15 Oct 2010 17:58:47 +0200 Message-ID: <4CB87A37.3010006@redhat.com> References: <4CB874B6.1040808@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Hans de Goede Return-path: Received: from mx1.redhat.com ([209.132.183.28]:24504 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755674Ab0JOP6y (ORCPT ); Fri, 15 Oct 2010 11:58:54 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o9FFws00018274 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 15 Oct 2010 11:58:54 -0400 In-Reply-To: <4CB874B6.1040808@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Hi, > will get BUG: soft lockup in dmesg (once you unstuck it) > Removing -smp 2 from the cmdline makes this go away. The guests soft lookup stacktrace hints it is the remote tlb flush in the execve path causing this. The fpaste is expired meanwhile though. Hans, can you send one of those stack traces to the list please? thanks, Gerd