On 1 Feb 2002, Edward S. Marshall wrote:
> On Thu, 2002-01-31 at 11:54, Ben Greear wrote:
> > The only lockup problems I have run into are connecting some eepro nics to
> > a 10bt hub, and using (cheap arsed, it appears) PCI riser cards. I have
> > heard of some SMP related issues, but nothing concrete, and I don't
> > have any SMP systems personally. You could try the e100, but I have
> > no idea if it will be better or worse for your particular problem.
>
> I was running into the same problems here; SMP system w/PCI riser card
> (HP NetServer LPr), connected to a 10/100 switch. I'd get
> "wait_for_command_timeout" errors all the time under moderate network
> load. Switching to the e100 driver didn't help in the slightest.
> Eventually, I'd experience a complete system lockup.
>
> Replacing the card with a 3c59x-based card put the machine back in
> service (I've completely written eepro100s off as a viable cards now),
> although I still saw occasional PCI-related issues. Specifically:
>
> Jan 23 10:11:37 x kernel: Uhhuh. NMI received. Dazed and confused, but
> trying to continue
> Jan 23 10:11:37 x kernel: eth0: Host error, FIFO diagnostic register
> 0000.
> Jan 23 10:11:37 x kernel: eth0: PCI bus error, bus status 80000020
> Jan 23 10:11:37 x kernel: You probably have a hardware problem with your
> RAM chips
> Jan 23 10:11:37 x kernel: eth0: Host error, FIFO diagnostic register
> 0000.
> Jan 23 10:11:37 x kernel: eth0: PCI bus error, bus status 80000020
>
> The last two messages will repeat indefinitely, usually with a hit to
> the dist for each pair of log entries (resulting in a very distinctive
> drive grinding). Memory problems don't seem to be the issue; with a
> fairly extensive run of memtest86, everything came back clean.
>
> Taking a few minutes to try and rectify the situation, I started
> shutting down services and manually unloading modules to see what was
> causing the problem. Unloading usbcore did the trick:
>
> Jan 26 18:41:24 x kernel: eth0: Host error, FIFO diagnostic register
> 0000.
> Jan 26 18:41:24 x kernel: eth0: PCI bus error, bus status 80000020
> Jan 26 18:41:24 x kernel: eth0: Too much work in interrupt, status e003.
> Jan 26 18:41:24 x kernel: usb.c: USB disconnect on device 1
> Jan 26 18:41:24 x kernel: USB bus 1 deregistered
>
> I've rebooted the machine since then, but have always unloaded usb-uhci
> and usbcore after booting. The issue hasn't cropped up again, although
> it happened every couple of days previously.
>
> The kernel in question is Red Hat's kernel-smp-2.4.9-21 build.
>
> --
> Edward S. Marshall <esm@logic.net>
> http://esm.logic.net/
> -------------------------------------------------------------------------------
> [ Felix qui potuit rerum cognoscere causas.
> ]
>
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