From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Klotz Subject: ACPI related kernel panic when booting 2.6.29-rc2 Date: Sat, 17 Jan 2009 21:47:17 +0100 Message-ID: <497243D5.8000708@aon.at> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from nat-warsl417-02.aon.at ([195.3.96.120]:40380 "EHLO email.aon.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751389AbZAQUyF (ORCPT ); Sat, 17 Jan 2009 15:54:05 -0500 Received: from smarthub95.highway.telekom.at (HELO email.aon.at) ([172.18.5.234]) (envelope-sender ) by fallback44.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 17 Jan 2009 20:47:20 -0000 Received: from 212-183-101-99.adsl.highway.telekom.at (HELO [192.168.0.100]) ([212.183.101.99]) (envelope-sender ) by smarthub95.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 17 Jan 2009 20:47:18 -0000 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org On bootup of 2.6.29-rc2 a kernel panic in acpi_ns_get_parent_node occurs. This is the backtrace (written down from the screen, maybe incomplete): acpi_ev_execute_reg_methods acpi_install_address_space_handler acpi_ec_space_handler acpi_init ec_install_handlers acpi_ec_ecdt_probe acpi_init fbmem_init _stext register_irq_proc proc_pident_readdir kernel_init child_rip kernel_init child_rip RIP [...] acpi_ns_get_parent_node I can provide a screenshot (270kB) if this information is insufficient. The system booted with 2.6.29-rc1 so a recent change must be the cause of this panic. The system is an Asus B50A laptop running an x86_64 kernel. Maybe this problem is related to these messages I was seeing in bootups of previous kernels: [ 0.176398] ACPI Error (nsaccess-0434): ACPI path has too many parent prefixes (^) - reached beyond root node [20080926] Regards, Peter.