[Soekris] net5501 lockup when sending alot of trafic between two NIC's

[Nix]

On 26 Jul 2010, Bjarke Istrup Pedersen outgrape:

> Indeed, I know it can.
>
> What I'm trying to figure out is how I can get something useful out of
> it when it crashes, so I can track the problem down. (I'm kind of
> hoping it is a software issue)
> Any ideas? (I'm running Linux 2.6.34.1 on it)

Crashes under high interrupt-driven kernel load make me wonder about
kernel stack overflow. What's your filesystem stack look like?  Do you
have CONFIG_4KSTACKS turned on? (It's deprecated now, moved to under the
kernel hacking menu, and about to be removed precisely because it causes
spontaneous unexplainable crashes like this, but if you had it on in the
past you might have just left it on).

Try watching the serial console and turning on CONFIG_DEBUG_STACKOVERFLOW.