Environment Information

Provide at least:

# ruby -v
jruby 9.3.0.0-SNAPSHOT (2.6.8) 2021-09-08 1420b569ca OpenJDK 64-Bit Server VM 25.292-b10 on 1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 +jit [linux-aarch64]

# uname -a
Linux 230774719ef0 5.10.47-linuxkit #1 SMP PREEMPT Sat Jul 3 21:50:16 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux

Other relevant info you may wish to add:

• Running on Docker Desktop on M1 Mac

Expected Behavior

Puma serves request with minimum Sinatra setup.
Edit:
BasicSocket#getsockopt should return a Socket::Option instance with non-empty byte string inside

Actual Behavior

Puma crashes while handing requests.

* Listening on http://0.0.0.0:4567
Use Ctrl-C to stop
2021-09-10 15:16:57 +0000 Read: #<NoMethodError: undefined method `>=' for nil:NilClass>

Edit:
BasicSocket#getsockopt returns a Socket::Option instance with zero-length byte string inside

The gist below describes steps to reproduce the Puma error caused by this issue:
https://gist.github.com/KazkiMatz/6f33aeb1b803a77fd246716c1985338b

https://github.com/puma/puma/blob/master/lib/puma/server.rb#L183
on L183, tcp_info.unpack(UNPACK_TCP_STATE_FROM_TCP_INFO) returns [nil] that makes state as nil.