Strange HALD IRQ issue

[Paul M. Dyer]

This URL is all that I know about ioapic.  I solved a problem once with ioapic.   The USB irq's were conflicting in RHEL5xen.   I just turned them off in the motherboard to get the thing to boot.

Paul

http://www.mjmwired.net/kernel/Documentation/i386/IO-APIC.txt

----- Original Message -----
From: "Faris Raouf" <asterisk at raouf.net>
To: linux-poweredge at lists.us.dell.com
Sent: Friday, August 8, 2008 4:20:21 PM (GMT-0600) America/Chicago
Subject: Strange HALD IRQ issue

I've just put two R200s into service at a new data centre, both running
Centos 5 (x86_64)

In terms of hardware both are identical (purchased at the same time, same
spec), and software should be pretty close (meant to be identical but some
slight variations may have happened during the OS install). Both have the
same kernel, that's for sure. Both have the same OMSA (installed from the
yum repos).

On boot, however, one of them is throwing up an error, while the other one
isn't. I think it is HALD that is generating it but unfortunately the screen
shots I grabbed via the DRAC card seem to be invisible to me (Unfortunately
I have to run Vista on my desktop).

Can anybody suggest what this means? It is basically gibberish to me. As far
as I know, IRQ 12 is used by i8042 -- a keyboard controller chip. 

cat /proc/interrupts | grep 12
12:          0          3          1          0    IO-APIC-edge  i8042

But in the call trace (see below) it talks about an 8250.

Everything appears to be working on both machines but I would really like to
know the cause of this. If anybody can shed any light I'd appreciate it.

Thanks,

Faris.

*********************

This is what the machine with the error shows in /var/log/messages

Aug  8 20:36:46 vzbeta Server Administrator: Instrumentation Service
EventID: 1000  Server Administrator starting
Aug  8 20:36:46 vzbeta Server Administrator: Instrumentation Service
EventID: 1012  IPMI status  Interface: OS
Aug  8 20:36:46 vzbeta Server Administrator: Instrumentation Service
EventID: 1001  Server Administrator startup complete
Aug  8 20:36:48 vzbeta kernel: IRQ handler type mismatch for IRQ 12
Aug  8 20:36:48 vzbeta kernel:
Aug  8 20:36:48 vzbeta kernel: Call Trace:
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff800bf19e>] setup_irq+0x1a9/0x1c1
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff801a3316>]
serial8250_interrupt+0x0/0xfe
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff800bf266>] request_irq+0xb0/0xd6
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff801a313f>]
serial8250_startup+0x422/0x56e
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff80055773>] uart_startup+0x76/0x13a
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff800559d3>] uart_open+0x19c/0x41c
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff80188db7>] tty_open+0x2f9/0x4aa
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff8004b5cf>] chrdev_open+0x153/0x189
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff8004b47c>] chrdev_open+0x0/0x189
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff8001ee18>]
__dentry_open+0xd9/0x1dc
Aug  8 20:36:48 vzbeta kernel:  [<ffffffff80028662>] do_filp_open+0x2a/0x38
Aug  8 20:36:49 vzbeta kernel:  [<ffffffff8003806d>]
__strncpy_from_user+0x17/0x41
Aug  8 20:36:49 vzbeta kernel:  [<ffffffff80019a9e>] do_sys_open+0x44/0xbe
Aug  8 20:36:49 vzbeta kernel:  [<ffffffff800602dd>] tracesys+0xd5/0xe0
Aug  8 20:36:49 vzbeta kernel:




This is /var/log/messages from its identical twin, which does not give any
errors:

Aug  8 21:38:13 vzalpha Server Administrator: Instrumentation Service
EventID: 1000  Server Administrator starting
Aug  8 21:38:13 vzalpha Server Administrator: Instrumentation Service
EventID: 1012  IPMI status  Interface: OS
Aug  8 21:38:13 vzalpha Server Administrator: Instrumentation Service
EventID: 1001  Server Administrator startup complete
Aug  8 21:38:16 vzalpha snmpd[14340]: [smux_accept] accepted fd 13 from
127.0.0.1:60387
Aug  8 21:38:16 vzalpha snmpd[14340]: accepted smux peer: oid
SNMPv2-SMI::enterprises.674.10892.1, descr Systems Management SNMP MIB
Plug-in Manager
Aug  8 21:38:21 vzalpha snmpd[14340]: Got trap from peer on fd 13





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