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  1. Bug #2020279
  2. Comment #14

Comment 14 for bug 2020279

Revision history for this message
Andrei Gherzan (agherzan) wrote :

Thanks for the extra details. I tried to reproduce it locally today, and I couldn't. While checking the code and your logs, I suspect this is IPv6-specific, and my testing env is IPv4-only. I'll come back when I manage to reproduce it. My current suspicion is:

commit e198bdd7ad2834c77567d59158e88363d2f0e05d
Author: Kuniyuki Iwashima <email address hidden>
Date: Thu Feb 9 16:22:01 2023 -0800
    dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions.
    BugLink: https://bugs.launchpad.net/bugs/2015399
    commit ca43ccf41224b023fc290073d5603a755fd12eed upstream.

This would confirm the above IPv6 theory.

PS: The warning is generated by WARN_ON(sk->sk_forward_alloc) in sk_stream_kill_queues.