I was able to reproduce it with mainline kernel 5.9.0-050900rc1-generic.
The testcase "raw gso min size - 1 (fails)" is failing because what it executes ("./in_netns.sh ./psock_snd -v -c -g -l 1472") is returning success when it expects a failure.
So I'm wondering if psock_snd.sh is making some assumption which is not valid anymore.
I was able to reproduce it with mainline kernel 5.9.0-050900rc1 -generic.
The testcase "raw gso min size - 1 (fails)" is failing because what it executes ("./in_netns.sh ./psock_snd -v -c -g -l 1472") is returning success when it expects a failure.
So I'm wondering if psock_snd.sh is making some assumption which is not valid anymore.