Hi,
Just added an old network card, RTL-8029(AS), ne2k-pci driver, and tried to
expand the network (failed because I didn't use a cross-over cable).
The code snippet that spat the thing:
/*
* IRQ resend
*
* Is called with interrupts disabled and desc->lock held.
*/
void check_irq_resend(struct irq_desc *desc, unsigned int irq)
{
unsigned int status = desc->status;
/*
* Make sure the interrupt is enabled, before resending it:
*/
desc->chip->enable(irq);
/*
* Temporary hack to figure out more about the problem, which
* is causing the ancient network cards to die.
*/
if (desc->handle_irq != handle_edge_irq) {
WARN_ON_ONCE(1);
return;
}
and relevant dmesg snippet:
[ 446.836399] eth1: RealTek RTL-8029 found at 0x9000, IRQ 16, 00:00:B4:BB:BF:E5.
[ 855.458468] r8169: eth0: link up
[ 857.500667] r8169: eth0: link up
[ 902.294283] r8169: eth0: link up
[ 4126.348427] r8169: eth0: link up
[ 5598.446233] r8169: eth0: link down
[ 5618.904846] r8169: eth0: link up
[ 5623.133090] r8169: eth0: link down
[ 5624.708071] r8169: eth0: link up
[ 6328.267872] WARNING: at /home/indan/src/git/linux-2.6/kernel/irq/resend.c:70 check_irq_resend()
[ 6328.267896] [<b0135d8f>] check_irq_resend+0x4f/0x8c
[ 6328.267912] [<b0135888>] enable_irq+0x84/0xaa
[ 6328.267918] [<c08e37cc>] ne2k_pci_block_output+0x0/0x138 [ne2k_pci]
[ 6328.267931] [<c08e37cc>] ne2k_pci_block_output+0x0/0x138 [ne2k_pci]
[ 6328.267939] [<c08e37cc>] ne2k_pci_block_output+0x0/0x138 [ne2k_pci]
[ 6328.267947] [<c08e0f8a>] ei_start_xmit+0x29f/0x2b9 [8390]
[ 6328.267966] [<b022a53e>] dev_hard_start_xmit+0x19e/0x1fd
[ 6328.267976] [<b023620a>] __qdisc_run+0x6c/0x151
[ 6328.267986] [<b022c459>] dev_queue_xmit+0x12a/0x271
[ 6328.267991] [<b0260ec9>] arp_send+0x4c/0x64
[ 6328.268002] [<b0260524>] arp_xmit+0x4d/0x51
[ 6328.268009] [<b026117c>] arp_process+0x29b/0x50a
[ 6328.268018] [<b0244f0a>] ip_forward+0x22c/0x23a
[ 6328.268026] [<b02434a8>] ip_rcv_finish+0x0/0x282
[ 6328.268032] [<b0243db9>] ip_rcv+0x479/0x4a8
[ 6328.268037] [<b02434a8>] ip_rcv_finish+0x0/0x282
[ 6328.268044] [<b02614db>] arp_rcv+0xf0/0x104
[ 6328.268049] [<b012ae17>] hrtimer_run_queues+0x12/0x1a1
[ 6328.268055] [<b02613eb>] arp_rcv+0x0/0x104
[ 6328.268061] [<b022a07d>] netif_receive_skb+0x2d9/0x317
[ 6328.268068] [<b022baa0>] process_backlog+0x6d/0xd2
[ 6328.268075] [<b022c1c2>] net_rx_action+0x81/0x14d
[ 6328.268082] [<b011dd84>] __do_softirq+0x35/0x75
[ 6328.268088] [<b0106030>] do_softirq+0x3e/0x8d
[ 6328.268098] [<b0136530>] handle_fasteoi_irq+0x0/0xbe
[ 6328.268103] [<b011dd44>] irq_exit+0x25/0x30
[ 6328.268107] [<b010630f>] do_IRQ+0x94/0xad
[ 6328.268114] [<b0104763>] common_interrupt+0x23/0x28
[ 6328.268123] [<b0102a0c>] default_idle+0x27/0x39
[ 6328.268128] [<b0102347>] cpu_idle+0x41/0x55
[ 6328.268133] [<b032f99b>] start_kernel+0x20e/0x213
[ 6328.268140] [<b032f317>] unknown_bootoption+0x0/0x196
[ 6328.268146] =======================
# cat /proc/interrupts
CPU0
0: 9804926 IO-APIC-edge timer
1: 8270 IO-APIC-edge i8042
9: 0 IO-APIC-fasteoi acpi
12: 181281 IO-APIC-edge i8042
16: 40410 IO-APIC-fasteoi sata_sil, eth1
17: 0 IO-APIC-fasteoi ohci_hcd:usb1, NVidia nForce2
18: 499428 IO-APIC-fasteoi ohci_hcd:usb2
19: 2 IO-APIC-fasteoi ehci_hcd:usb3
20: 689588 IO-APIC-fasteoi eth0
NMI: 0
LOC: 9805098
ERR: 0
MIS: 0
So the card is sharing an IRQ with the disk controller.
No idea if the network card died after this warning, for all
practical purposes it didn't work before, so couldn't check.
I can provide more information and run some tests if anyone
wants that, just keep in mind that the card isn't connected to
anything.
Greetings,
Indan
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