From mboxrd@z Thu Jan 1 00:00:00 1970 From: Donald Parsons Subject: kvm-85rc5 Segmentation fault for m >= 2046 GB Date: Sun, 12 Apr 2009 18:14:12 -0400 Message-ID: <1239574452.3950.37.camel@falcon> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from phil.doycomm.com ([66.219.128.249]:50579 "EHLO phil.doycomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751769AbZDLXFs (ORCPT ); Sun, 12 Apr 2009 19:05:48 -0400 Received: from hegel.brightdsl.net (hegel.brightdsl.net [66.219.128.251]) by phil.doycomm.com (8.12.8/8.12.8) with ESMTP id n3CMEL18011257 for ; Sun, 12 Apr 2009 18:14:21 -0400 Received: from [192.168.1.10] (akro-pool1-cs240.pool.dslohio.net [66.219.142.240]) by hegel.brightdsl.net (8.12.10/8.12.10) with ESMTP id n3CMEGm0005583 for ; Sun, 12 Apr 2009 18:14:16 -0400 (EDT) Sender: kvm-owner@vger.kernel.org List-ID: Required info: Intel Core 2 Duo E6600 kvm version kvm-85rc5 seg faults (rc[13] fine; rc[24]?) Host kernel version: 2.6.29.1 SMP x86_64 (on Fedora 10) Guest: Fedora 11 beta x86_64 (host and guest updated) qemu cmd line: /usr/local/kvm/bin/qemu-system-x86_64 fc11Beta.img -m 2048 & Problem still present with either of -no-kvm-irqchip or -no-kvm-pit switch Problem also appears with the -no-kvm switch In trying to make the core file smaller I found the seg fault disappeared for anything less than 2048 and still appeared for other values above 2048. (Interesting thing, m=2046 and 2047 got a little further, window changed size before seg fault). Everything up to 2045 worked. Seg fault occurs quite early, last thing seen is: "Press F12 for boot menu" followed by segfault about 3.5 to 4 seconds later. Seems to be a problem with http://www.linux-kvm.org/page/Bugs where it says about core files "Then get a backtrace of the error with" followed by nothing? dmesg shows: (these for m>=2048) qemu-system-x86[9392] general protection ip:43c8e9 sp:7fffdfd955d0 error:0 in qemu-system-x86_64[400000+1f2000] qemu-system-x86[9394] general protection ip:43c8e9 sp:7fffee13e970 error:0 in qemu-system-x86_64[400000+1f2000] qemu-system-x86[9462] general protection ip:43c8e9 sp:7fff21ce3510 error:0 in qemu-system-x86_64[400000+1f2000] qemu-system-x86[9522] general protection ip:43c8e9 sp:7fff7b4d4d10 error:0 in qemu-system-x86_64[400000+1f2000] qemu-system-x86[9525] general protection ip:43c8e9 sp:7fff11aba2f0 error:0 in qemu-system-x86_64[400000+1f2000] (next one m=2046) qemu-system-x86[9540] general protection ip:43c8f4 sp:7fffd6020850 error:0 in qemu-system-x86_64[400000+1f2000] (next one m=2047) qemu-system-x86[9314] general protection ip:43c8f4 sp:7fffdcfe1810 error:0 in qemu-system-x86_64[400000+1f2000] Don