Hi,

I have received two reports [0][1] about WARN_ON_ONCE() in sk_stream_kill_queues().

This is because the stable tree backported ca43ccf41224 ("dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions.") without 62ec33b44e0f ("net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues().").

The reports are about 6.1.14 and 5.15.95 though, 62ec33b44e0f can be applied cleanly on 6.1.y only, and 4.14 ~ 5.10 will have the same issue.

So, please backport 62ec33b44e0f to 6.1.y. I will post patches for other trees later.

[0]: https://lore.kernel.org/netdev/eb5ad452-0abe-8ea6-7e9e-1dd16852e8db@hauke-m.... [1]: https://bodhi.fedoraproject.org/updates/FEDORA-2023-3b67299c42

Thanks, Kuniyuki