Subject: linux-virt-6.6.44: syslog spammed with: eth0: bad gso: type: 1, size: 1460

From: Steffen Nurpmeso <[email-masked]>
Date: Sat, 10 Aug 2024 23:50:22 +0200

Hello.

Since August 6th i get myriads of

  Aug  6 14:08:48 kernel: [42681.506118] eth0: bad gso: type: 1, size: 1460

syslog entries, and pretty dramatic network stalls.
I have now installed ethtool due to a hint from searching

  ethtool -K eth0 gro off gso off tso off

but it does not change the situation.
This is a vserver hosted somewhere (since 2015 .. running
AlpineLinux [edge]!).

Does anyone have an idea?
Thanks in advance!

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)
|
| Only during dog days:
| On the 81st anniversary of the Goebbel's Sportpalast speech
| von der Leyen gave an overlong hypocritical inauguration one.
| The brew's essence of our civilizing advancement seems o be:
|   Total war - shortest war -> Permanent war - everlasting war

---

From: Steffen Nurpmeso <[email-masked]>
Date: Sun, 11 Aug 2024 01:58:57 +0200

Hello and Yay!

Steffen Nurpmeso wrote in
 <20240810215022.o5tv8NAk@steffen%sdaoden.eu>:
 |Since August 6th i get myriads of
 |
 |  Aug  6 14:08:48 kernel: [42681.506118] eth0: bad gso: type: 1, size: 1460
 |
 |syslog entries, and pretty dramatic network stalls.
 |I have now installed ethtool due to a hint from searching
 |
 |  ethtool -K eth0 gro off gso off tso off
 |
 |but it does not change the situation.
 |This is a vserver hosted somewhere (since 2015 .. running
 |AlpineLinux [edge]!).
 |
 |Does anyone have an idea?
 |Thanks in advance!

After looking at

  ethtool --show-offload eth0

i called

  ethtool -K eth0 rx-gro-hw off

and that actually was it!

I have further searched the net and it seems "GSO" is a topic on
Linux currently, so maybe it gets better soon.
If someone knows how to achive the above call without having
ethtool installed, that would be cool.

A nice Sunday i wish everybody!!
Ciao from Germany,

--steffen
|