From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Duffy Subject: kvm-78 - kernel panic after using system_reset except when using -no-kvm-irqchip Date: Tue, 11 Nov 2008 20:29:03 -0600 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from main.gmane.org ([80.91.229.2]:46231 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751758AbYKLC3W (ORCPT ); Tue, 11 Nov 2008 21:29:22 -0500 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1L05Tp-0000rr-1P for kvm@vger.kernel.org; Wed, 12 Nov 2008 02:29:17 +0000 Received: from rrcs-71-41-149-67.sw.biz.rr.com ([71.41.149.67]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 12 Nov 2008 02:29:17 +0000 Received: from Charles_Duffy by rrcs-71-41-149-67.sw.biz.rr.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 12 Nov 2008 02:29:17 +0000 Sender: kvm-owner@vger.kernel.org List-ID: This happens every other use of system_reset -- ie. resetting the system using system_reset while in this panic'd state results in correct functionality. Following the suggestion and booting the guest with noapic results in other IRQ-related errors. The guest kernel is CentOS 5 2.6.18-53.el5 on x86_64. The host is running 2.6.27.5. Kernel command line: ro root=/dev/VolGroup01/LogVol00 Initializing CPU#0 PID hash table entries: 4096 (order: 12, 32768 bytes) Console: colour VGA+ 80x25 Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes) Inode-cache hash table entries: 65536 (order: 7, 524288 bytes) Checking aperture... Memory: 746368k/76936k available (2434k kernel code, 21180k reserved, 1235k data, 192k init) Calibrating delay using timer specific routine.. 4793.50 BogoMIPS (lpj=2396750) Security Framework v1.0.0 initialized SELinux: Initializing. selinux_register_security: Registering secondary module capability Capability LSM initialized as secondary Mount-cache hash table entries: 256 CPU: L1 I cache: 32K, L1 D cache: 32K CPU: L2 cache: 2048K SMP alternatives: switching to UP code ACPI: Core revision 20060707 irq 25, desc: ffffffff803afc80, depth: 1, count: 0, unhandled: 0 ->handle_irq(): ffffffff800b54e3, handle_bad_irq+0x0/0x1f6 ->chip(): ffffffff802ea700, 0xffffffff802ea700 ->action(): 0000000000000000 IRQ_DISABLED set unexpected IRQ trap at vector 19 ..MP-BIOS bug: 8254 timer not connected to IO-APIC timer doesn't work through the IO-APIC - disabling NMI Watchdog! Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter