From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261663AbVFUISF (ORCPT ); Tue, 21 Jun 2005 04:18:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261629AbVFUIQ2 (ORCPT ); Tue, 21 Jun 2005 04:16:28 -0400 Received: from postfix3-2.free.fr ([213.228.0.169]:64912 "EHLO postfix3-2.free.fr") by vger.kernel.org with ESMTP id S261989AbVFUHZt (ORCPT ); Tue, 21 Jun 2005 03:25:49 -0400 Message-ID: <42B7C0FA.8070409@unice.fr> Date: Tue, 21 Jun 2005 09:25:46 +0200 From: XIAO Gang Organization: =?ISO-8859-1?Q?Universit=E9_de_Nice_-_Sophia_Anti?= =?ISO-8859-1?Q?polis?= User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 X-Accept-Language: en, fr, zh-CN, zh-TW MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: UML mode panick under 2.6.12 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I am unable to run UML mode (i386) under 2.6.12: the execution gives the following messages. --------------------------------------------------------------------------------------------- Checking for /proc/mm...not found Checking PROT_EXEC mmap in /tmp...OK tracing thread pid = 26236 <5>Linux version 2.6.12 (xiao@cim06-1-82-234-179-206.fbx.proxad.net) (gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #22 Tue Jun 21 09:21:30 CEST 2005 <7>On node 0 totalpages: 8192 <7> DMA zone: 8192 pages, LIFO batch:3 <7> Normal zone: 0 pages, LIFO batch:1 <7> HighMem zone: 0 pages, LIFO batch:1 Built 1 zonelists <5>Kernel command line: root=98:0 PID hash table entries: 256 (order: 8, 4096 bytes) Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) <6>Memory: 29500k available <7>Calibrating delay loop... 1802.24 BogoMIPS (lpj=9011200) Mount-cache hash table entries: 512 Checking for host processor cmov support...Yes Checking for host processor xmm support...No Checking that ptrace can change system call numbers...<0>Kernel panic - not syncing: Segfault with no mm EIP: 0023:[<00000000>] CPU: 0 Not tainted ESP: 002b:a01a7f58 EFLAGS: 00010207 Not tainted EAX: 00000000 EBX: a01a7f60 ECX: 00000000 EDX: a01d4a00 ESI: 00000000 EDI: 00000000 EBP: 00000002 DS: 002b ES: 002b a01a7a38: [] show_regs+0x1dd/0x1e8 a01a7a68: [] panic_exit+0x27/0x48 a01a7a88: [] notifier_call_chain+0x22/0x40 a01a7ab8: [] panic+0x56/0x104 a01a7ad8: [] segv+0x1be/0x254 a01a7bb8: [] segv_handler+0x11c/0x180 a01a7bf8: [] sig_handler_common_tt+0xa9/0x124 a01a7c58: [] sig_handler+0x1f/0x34 a01a7c78: [] __restore+0x0/0x8 --------------------------------------------------------------------------------------------- By the way, the output beyond the first three lines has to be printed out after a hack of printk(), as the latter usually failed to print out anything. The kernel is compiled with a ported config from 2.6.10-um, and is run under exactly the same condition as the 2.6.10 counterpart which works fine. The host is under Linux-2.4.31. -- XIAO Gang (~{P$8U~}) xiao@unice.fr home page: pcmath126.unice.fr/xiao.html