* How to diagnose unexpected IRQ Trap
[not found] ` <banggh.3o3ten@no-mx.forums.opensuse.org>
@ 2009-02-24 16:00 ` Larry Finger
0 siblings, 0 replies; only message in thread
From: Larry Finger @ 2009-02-24 16:00 UTC (permalink / raw)
To: LKML; +Cc: Larry Finger
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-<NULL>
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
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