Re: [PATCH v1 net-next 0/2] net: Disallow buggy TCP transitions and IPV6_ADDRFORM.

[Hyunwoo Kim <imv4bel@gmail.com>]

On Fri, Sep 04, 2026 at 03:35:27AM +0000, Kuniyuki Iwashima wrote:
> The following operations have recently received a lot of AI-driven
> bug reports:
> 
>   * listen() + shutdown() + connect()
>   * connect() + connect(AF_UNSPEC) + listen()
> 
>   * setsockopt(IPV6_ADDRFORM)
> 
> They are not worth fixing by churning the fast path, so this series
> disallows the transitions and removes IPV6_ADDRFORM.
> 
>   https://lore.kernel.org/netdev/CANn89i+px52TtJy3S9=uHxGj3s-WueguRo1Z_4FxO=02KLmwmQ@mail.gmail.com/
>   https://lore.kernel.org/netdev/5832ba17-c096-4f07-aa73-2e2bb6f79856@redhat.com/
> 
> I did not add Fixes tags, but if we want to backport, the tag
> would be:
> 
>   Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")

Hi netdev maintainers,

What is the plan for stable backports here? Does the uapi change rule
this series out for stable?

> 
> 
> Kuniyuki Iwashima (2):
>   tcp: Do not allow buggy transitions between ehash and lhash2.
>   ipv6: Remove IPV6_ADDRFORM.
> 
>  include/linux/net.h                |  2 +-
>  include/net/inet_connection_sock.h |  1 +
>  net/core/sock.c                    |  4 +-
>  net/ipv4/af_inet.c                 |  3 --
>  net/ipv4/inet_connection_sock.c    |  1 +
>  net/ipv4/inet_hashtables.c         | 11 ++++
>  net/ipv6/af_inet6.c                |  4 --
>  net/ipv6/ipv6_sockglue.c           | 87 ------------------------------
>  8 files changed, 15 insertions(+), 98 deletions(-)
> 
> -- 
> 2.55.0.1003.g10538fe699-goog
> 

Best regards,
Hyunwoo Kim