From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265986AbUBPWyo (ORCPT ); Mon, 16 Feb 2004 17:54:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265922AbUBPWvJ (ORCPT ); Mon, 16 Feb 2004 17:51:09 -0500 Received: from agminet02.oracle.com ([141.146.126.229]:11479 "EHLO agminet02.oracle.com") by vger.kernel.org with ESMTP id S265965AbUBPWsV (ORCPT ); Mon, 16 Feb 2004 17:48:21 -0500 Message-ID: <40314897.7040805@oracle.com> Date: Mon, 16 Feb 2004 23:47:51 +0100 From: Alessandro Suardi User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20040107 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel CC: linux-acpi Subject: 2.6.3-rc3 (and possibly earlier 2.6): weird hang and oopses Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org [CC:ing linux-acpi since some acpi stuff appears in backtraces] While apparently doing nothing special (possibly a 'rm' on a regular ext3 filesystem) my laptop hung. Not completely, as I could * switch virtual desktops within Ximian Desktop 2 * click on the kill window top right button, see the "app is not responding, kill it anyway ?" dialog, say ok, see the gnome-terminal vanish * Alt-Fn to virtual consoles, type a login name (but getting no prompt for the password - this hung) * Alt-SysRq Trying to get more info, I Alt-SysRq-P seeing this (handcopied but should be fairly reliable :) : Pid: 0, comm: swapper EIP: 0060: acpi_processor_idle+0x13c/0x1cb default_idle+0x0/0x27 rest_init+0x0/0x5e acpi_nt_copy_ipackage_to_ipackage+0x69/0xdb default_idle+0x0/0x27 rest_init+0x0/0x5e cpu_idle+0x2e/0x37 start_kernel+0x182/0x1b0 unknown_bootoption+0x0,0xff While copying this down, there were 'ps' oopses at regular intervals (say 2/3 minutes apart from each other), with this further oops trace: pid_revalidate+0x28/0xd2 pid_revalidate+0x41/0xd2 dput+0x22/0x21f link_path_walk+0x61b/0x957 buffered_rmqueue+0xc1/0x15a __alloc_pages+0xa4/0x342 proc_info_read+0x74/0x155 filp_open+0x67/0x69 vfs_read+0xbc/0x127 sys_read+0x42/0x63 sysenter_past_esp+0x52/0x71 And right after each oops a further trace, with the warning that 'ps' exited with a preempt_count of 1: Bad: scheduling while atomic schedule unmap_page_range unmap_vmas exit_mmap mmput do_exit do_divide do_page_fault acpi_processor_set_performance error_code file_read_actor There was more, but I couldn't copy further info due to pressing time constraints. This isn't the first time a 2.6.x kernel hangs on me, and IIRC 2.6.1 never did. Oh, and of course I still can't Alt-SysRq-B :( Thanks for looking into this, ciao, --alessandro "Two rivers run too deep The seasons change and so do I" (U2, "Indian Summer Sky")