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 1H7FLt-0005Mh-Vd for user-mode-linux-devel@lists.sourceforge.net; Wed, 17 Jan 2007 10:17:38 -0800 Received: from ns.theshore.net ([67.18.92.50] helo=www.theshore.net) by mail.sourceforge.net with esmtp (Exim 4.44) id 1H7FLr-0003Oo-GO for user-mode-linux-devel@lists.sourceforge.net; Wed, 17 Jan 2007 10:17:37 -0800 Message-ID: <45AE684D.7070802@theshore.net> Date: Wed, 17 Jan 2007 12:17:49 -0600 From: "Christopher S. Aker" MIME-Version: 1.0 References: <200701171715.35504.blaisorblade@yahoo.it> In-Reply-To: <200701171715.35504.blaisorblade@yahoo.it> 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: Blaisorblade Cc: user-mode-linux-devel@lists.sourceforge.net Blaisorblade wrote: [snip] > Without any errors, after these messages: > > kjournald starting. Commit interval 5 seconds > EXT3-fs: mounted filesystem with ordered data mode. > VFS: Mounted root (ext3 filesystem) readonly. > > it hangs giving the following result at strace -p (I've printed two > consecutive iterations of the same messages to show that they are the same): > > --- SIGCHLD (Child exited) @ 0 (0) --- > wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WSTOPPED, NULL) = > 31586 > ptrace(PTRACE_GETREGS, 31586, 0, 0x6096dac8) = 0 > ptrace(PTRACE_GETFPREGS, 31586, 0, 0x6096dba0) = 0 > ptrace(PTRACE_CONT, 31586, 0, SIGSEGV) = 0 > --- SIGCHLD (Child exited) @ 0 (0) --- > wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGUSR1}], WSTOPPED, NULL) = > 31586 > ptrace(PTRACE_SETREGS, 31586, 0, 0x6096dac8) = 0 > ptrace(PTRACE_SETFPREGS, 31586, 0, 0x6096dba0) = 0 > ptrace(PTRACE_SYSCALL, 31586, 0, SIG_0) = 0 > > --- SIGCHLD (Child exited) @ 0 (0) --- > wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WSTOPPED, NULL) = > 31586 > ptrace(PTRACE_GETREGS, 31586, 0, 0x6096dac8) = 0 > ptrace(PTRACE_GETFPREGS, 31586, 0, 0x6096dba0) = 0 > ptrace(PTRACE_CONT, 31586, 0, SIGSEGV) = 0 > --- SIGCHLD (Child exited) @ 0 (0) --- > wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGUSR1}], WSTOPPED, NULL) = > 31586 > 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 -Chris ------------------------------------------------------------------------- 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