linux-kernel - Re: 2.6.19-rc6: irq 48: nobody cared

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Date:	Thu, 16 Nov 2006 22:55:53 +0100
From:	"Krzysztof Sierota (o2.pl/tlen.pl)" <Krzysztof.Sierota@...ma.o2.pl>
To:	Jesse Brandeburg <jesse.brandeburg@...il.com>
CC:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: 2.6.19-rc6: irq 48: nobody cared

Jesse Brandeburg napisał(a):
> On 11/16/06, Krzysztof Sierota <Krzysztof.Sierota@...ma.o2.pl> wrote:
>> Hi,
>>
>> I'm getting the following in dmesg with 2.6.19-rc5 and 2.6.19-rc6 
>> kernels quad
>> opteron server running 64bit kernel, and the network card gets disabled.
>>
>> On identical server running 32bit kernel, same cards, same slots, same
>> configuration running rc5 I see no errors.
>>
>> irq 48: nobody cared (try booting with the "irqpoll" option)
>
> its an e1000 adapter on irq 48
>
>> 41: 579 0 0 0 IO-APIC-fasteoi eth2
>> 42: 1482 0 0 0 IO-APIC-fasteoi eth3
>> 47: 36323 0 0 0 IO-APIC-fasteoi eth4
>> 48: 99905 10 83 2 IO-APIC-fasteoi eth5
>
> got quite a few interrupts considering there are no link events in
> your logs for eth4 or eth5
>
there are vlans on the interfaces.
>> ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
>> IOAPIC[0]: apic_id 4, address 0xfec00000, GSI 0-23
>> ACPI: IOAPIC (id[0x09] address[0xfeafe000] gsi_base[40])
>> IOAPIC[1]: apic_id 9, address 0xfeafe000, GSI 40-46
>> ACPI: IOAPIC (id[0x0a] address[0xfeaff000] gsi_base[47])
>> IOAPIC[2]: apic_id 10, address 0xfeaff000, GSI 47-53
>
> um, GSI 48 is the only interrupt using IOAPIC[2], could that be related?
>
>> Intel(R) PRO/1000 Network Driver - version 7.2.9-k4-NAPI
>> Copyright (c) 1999-2006 Intel Corporation.
>> ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 19
>> ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [LNKD] -> GSI 19 (level, 
>> low) ->
>> IRQ 19
>> PCI: Setting latency timer of device 0000:02:00.0 to 64
>> e1000: 0000:02:00.0: e1000_probe: (PCI Express:2.5Gb/s:32-bit)
>> 00:15:17:0b:82:13
>> e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
>> ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 18
>> ACPI: PCI Interrupt 0000:01:00.0[A] -> Link [LNKC] -> GSI 18 (level, 
>> low) ->
>> IRQ 18
>> PCI: Setting latency timer of device 0000:01:00.0 to 64
>> e1000: 0000:01:00.0: e1000_probe: (PCI Express:2.5Gb/s:32-bit)
>> 00:15:17:0b:81:ae
>> e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network Connection
>> ACPI: PCI Interrupt 0000:06:02.0[A] -> GSI 41 (level, low) -> IRQ 41
>> e1000: 0000:06:02.0: e1000_probe: (PCI-X:100MHz:64-bit) 
>> 00:04:23:b0:6b:6e
>> e1000: eth2: e1000_probe: Intel(R) PRO/1000 Network Connection
>> ACPI: PCI Interrupt 0000:06:02.1[B] -> GSI 42 (level, low) -> IRQ 42
>> e1000: 0000:06:02.1: e1000_probe: (PCI-X:100MHz:64-bit) 
>> 00:04:23:b0:6b:6f
>> e1000: eth3: e1000_probe: Intel(R) PRO/1000 Network Connection
>> ACPI: PCI Interrupt 0000:05:03.0[A] -> GSI 47 (level, low) -> IRQ 47
>> e1000: 0000:05:03.0: e1000_probe: (PCI-X:133MHz:64-bit) 
>> 00:30:48:57:3e:a0
>> e1000: eth4: e1000_probe: Intel(R) PRO/1000 Network Connection
>> ACPI: PCI Interrupt 0000:05:03.1[B] -> GSI 48 (level, low) -> IRQ 48
>> e1000: 0000:05:03.1: e1000_probe: (PCI-X:133MHz:64-bit) 
>> 00:30:48:57:3e:a1
>> e1000: eth5: e1000_probe: Intel(R) PRO/1000 Network Connection
>
> how come you aren't bringing the interfaces up? At least I don't see
> any link messages. We request the IRQ only at open. Something else is
> causing interrupts on the e1000 devices' lines.
The bonding driver is using the eth0 and eth1 and is triggering the event:

e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: bond0: enslaving eth0 as a backup interface with an up link.
e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
bonding: bond0: enslaving eth1 as a backup interface with an up link.
irq 48: nobody cared (try booting with the "irqpoll" option)

Call Trace:
<IRQ> [<ffffffff80249a2c>] __report_bad_irq+0x30/0x7d
[<ffffffff80249c54>] note_interrupt+0x1db/0x21f
[<ffffffff8024a47d>] handle_fasteoi_irq+0xa4/0xce
[<ffffffff8020c3c7>] do_IRQ+0x7b/0xc0
[<ffffffff80207c1e>] default_idle+0x0/0x47
[<ffffffff80209ca1>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff80207c47>] default_idle+0x29/0x47
[<ffffffff80207dc3>] cpu_idle+0x50/0x6f
[<ffffffff804f76bf>] start_kernel+0x1be/0x1c0
[<ffffffff804f7179>] _sinittext+0x179/0x17d

handlers:
[<ffffffff8033bbc4>] (e1000_intr+0x0/0xeb)
Disabling IRQ #48


> I suspect the IOAPIC code or ACPI code.
>
> Jesse
>


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