From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755008AbZBXQBZ (ORCPT ); Tue, 24 Feb 2009 11:01:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758571AbZBXQA4 (ORCPT ); Tue, 24 Feb 2009 11:00:56 -0500 Received: from mtiwmhc12.worldnet.att.net ([204.127.131.116]:33847 "EHLO mtiwmhc12.worldnet.att.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757166AbZBXQAz (ORCPT ); Tue, 24 Feb 2009 11:00:55 -0500 Message-ID: <49A419B1.1040507@lwfinger.net> Date: Tue, 24 Feb 2009 10:00:49 -0600 From: Larry Finger User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: LKML CC: Larry Finger Subject: How to diagnose unexpected IRQ Trap References: <0CAol.11902$5N1.5194@kovat.provo.novell.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In helping troubleshoot a wireless problem with an RTL8187L (USB) device on the openSUSE forums, the following excerpt from the dmesg output was reported: ================================================= unexpected IRQ trap at vector a3 irq 163, desc: c053af00, depth: 1, count: 0, unhandled: 0 ->handle_irq(): c0166904, handle_bad_irq+0x0/0x1e8 ->chip(): c051ae9c, no_irq_chip+0x0/0x40 ->action(): 00000000 IRQ_DISABLED set unexpected IRQ trap at vector a3 irq 163, desc: c053af00, depth: 1, count: 0, unhandled: 0 ->handle_irq(): c0166904, handle_bad_irq+0x0/0x1e8 ->chip(): c051ae9c, no_irq_chip+0x0/0x40 ->action(): 00000000 IRQ_DISABLED set ================================================== After seeing this info, I asked for the results of 'cat /proc/interrupts' and got the following: =================================================== bang@resolver:~> cat /proc/interrupts CPU0 CPU1 0: 92 0 IO-APIC-edge timer 1: 14 0 IO-APIC-edge i8042 4: 1 0 IO-APIC-edge 6: 5 0 IO-APIC-edge floppy 7: 0 0 IO-APIC-edge parport0 8: 0 0 IO-APIC-edge rtc0 9: 0 0 IO-APIC-fasteoi acpi 14: 0 0 IO-APIC-edge pata_via 15: 8655 0 IO-APIC-edge pata_via 17: 69762 0 IO-APIC-fasteoi HDA Intel, eth1 18: 0 0 IO-APIC-fasteoi saa7134[0] 20: 8439 0 IO-APIC-fasteoi uhci_hcd:usb1 21: 27348 0 IO-APIC-fasteoi sata_via, uhci_hcd:usb3, ehci_hcd:usb5 22: 9 0 IO-APIC-fasteoi uhci_hcd:usb2 23: 0 0 IO-APIC-fasteoi uhci_hcd:usb4 28: 247256 0 IO-APIC-fasteoi ahci 29: 0 0 IO-APIC-fasteoi pata_jmicron 163: 22423122 0 none- 222: 0 0 PCI-MSI-edge aerdrv 223: 0 0 PCI-MSI-edge aerdrv NMI: 0 0 Non-maskable interrupts LOC: 221651 239972 Local timer interrupts RES: 21767 19731 Rescheduling interrupts CAL: 380 273 function call interrupts TLB: 1435 2561 TLB shootdowns TRM: 0 0 Thermal event interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 =========================================================== The kernel in question is reported as 2.6.27.7-9-pae. I don't know what the hardware is. What information should I get to help resolve this problem? Thanks, Larry