24.06.2021 11:28, Arnd Bergmann:

Right, I forgot you saw that one WARN_ON trigger. If you enable KALLSYMS
and BUGVERBOSE, it should become obvious what that one is about.

Here is new log with a better backtrace:

https://pastebin.com/DP3dSE4w

The respective diff against regular 8139too.c is here:

https://pastebin.com/v8kA7ZmX

(Basically the same as you proposed initially, just slight difference 
might be as a remainder of my various previous testing)


Thank you,

Regards,
Nikolai