From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1H7Fgd-0007Vv-Pa for user-mode-linux-devel@lists.sourceforge.net; Wed, 17 Jan 2007 10:39:03 -0800 Received: from mail.nagafix.co.uk ([194.145.196.85]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1H7Fga-00015O-8H for user-mode-linux-devel@lists.sourceforge.net; Wed, 17 Jan 2007 10:39:03 -0800 Message-ID: <45AE67C0.5080003@nagafix.co.uk> Date: Wed, 17 Jan 2007 18:15:28 +0000 From: Antoine Martin MIME-Version: 1.0 References: <200701171715.35504.blaisorblade@yahoo.it> <45AE684D.7070802@theshore.net> In-Reply-To: <45AE684D.7070802@theshore.net> Subject: Re: [uml-devel] UML/64bit is miscompiled by gcc 4.0.3 on Ubuntu 6.06 LTS List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: "Christopher S. Aker" Cc: Blaisorblade , user-mode-linux-devel@lists.sourceforge.net >> ptrace(PTRACE_SETREGS, 31586, 0, 0x6096dac8) = 0 >> ptrace(PTRACE_SETFPREGS, 31586, 0, 0x6096dba0) = 0 >> ptrace(PTRACE_SYSCALL, 31586, 0, SIG_0) = 0 >> >> I'll have to verify whether some code in the stubs is miscompiled. But not >> until... well, I dunno when I'll be back... >> >> Anybody else with the same problem? > > > Isn't this is the same problem we discussed a few months back? What > I've discovered since then is this is a regression introduced after > 2.6.16 on the _host_. Any post-2.6.16 host kernel, either skas v8.2 or > v9.pre causes Ubuntu (and other distros, I believe) to hang after "VFS > mounting root". > > http://marc.theaimsgroup.com/?l=user-mode-linux-devel&m=116008558424368&w=2 > http://marc.theaimsgroup.com/?l=user-mode-linux-devel&m=116711159414443&w=2 Indeed it is. A fix would be more than welcome. (2.6.16 is a bit dated) I believe a lot of users are hitting this bug now too (and it is a regression) as a lot of distros ship recent kernels. Another regression in 2.6.16 (or later?) is the inability to run 32-bit guests on 64-bit hosts (the same binaries that used to work before - statically compiled). The boot stops very early during the "checking ptrace" step. Antoine ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel