Re: 2.6.20->2.6.21 - networking dies after random time

Jarek Poplawski
2007-08-07T09:05:27Z

On Tue, Aug 07, 2007 at 10:10:34AM +0200, Jean-Baptiste Vignaud wrote:
>
> > BTW: Jean-Babtiste, could you send or point to you current configs?

Oops! I'm very sorry for misspelling!

> > I mean at least proc/interrupts, but with dmesg and .config it would
> > be even better. (I assume this last report was about the revert patch
> > mentioned by Chuck, not the one below your message?)
>
> Sure.
>
> Last reports are with the 2.6.22.1-41.fc7 kernel, which has in changelog :
>
> * Sat Jul 28 2007 Chuck Ebbert <cebbert@redhat.com>
> - revert upstream "genirq: do not mask interrupts by default"
>
>
> * interrupts (i use irqbalance, but problem was the same without)

I wonder if you tried without SMP too?

>
> [root@loki ~]# cat /proc/interrupts
> CPU0 CPU1
...
> 16: 72625 96 IO-APIC-fasteoi eth1
> 17: 4667 128 IO-APIC-fasteoi eth2
> 20: 4156 39870 IO-APIC-fasteoi sata_nv
> 21: 34794 9177 IO-APIC-fasteoi sata_nv
> 22: 0 0 IO-APIC-fasteoi ehci_hcd:usb2
> 23: 6005 1565 IO-APIC-fasteoi ohci_hcd:usb1, sata_nv
> 2297: 3 492180 PCI-MSI-edge eth0
> NMI: 0 0
> LOC: 4915345 4915282
> ERR: 0

So, here it's not about irq sharing...

>
> problems are with eth1 and eth2 here. never had any problems with the onboard (eth0).
...
>
> * .config
>
> i dont have it, it was the standard fedora one.
>
> i'm not sure that the problem is related to 3com, because i replaced those cards by old card i had in spare :
>
> 01:06.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 42)
> 01:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8029(AS)
>
> and i had the exact same problem.
>
> Those 3com cards were working 24/24 before i went to fedora 7 (and kernel 2.6.21 then).

It seems from 2.6.21 the problems are mainly about 'older' network
chips on x86_64. This reverted patch should mean only for those
using disable_irq, but I see forcedeth could use this too so it's
not clear yet, and btw. there where other changes around irqs and
pci, so everybody could have something a bit different with similar
time outs logs...

BTW, Jean-Baptiste and Chuck - it seems, unless you have too much
time, there is no use for testing my "genirq: fix simple and fasteoi
irq handlers" patch.

Thanks,
Jarek P.