From: Kuniyuki Iwashima <kuniyu@google.com>
To: Juan Agustin Niccolini <juanagusnicco@gmail.com>
Cc: davem@davemloft.net, edumazet@kernel.org, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org, ncardwell@google.com,
josef@toxicpanda.com, jbacik@fb.com, shuah@kernel.org,
linux-kselftest@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v2 2/2] selftests: net: Add SO_REUSEPORT bind cache test to bind_wildcard.c
Date: Sat, 14 Nov 2026 07:29:51 +0000 [thread overview]
Message-ID: <avgNulWmQTaUHD3N@google.com> (raw)
In-Reply-To: <20261111174704.24312-3-juanagusnicco@gmail.com>
On Wed, 11 Nov 2026 12:47:04 -0500, Juan Agustin Niccolini wrote:
> Add a test for the bug fixed by "tcp: Fix the SO_REUSEPORT bind cache
> admitting a conflicting socket". With a 0.0.0.0 listener on the port, a
> v6only [::] SO_REUSEPORT socket fills the bind cache, and a dual-stack
> [::] SO_REUSEPORT socket must then fail to bind with EADDRINUSE.
>
> Without the fix:
>
> # RUN global.reuseport_v6only_cache ...
> # bind_wildcard.c:860:reuseport_v6only_cache:Expected ret (0) == -1 (-1)
> # reuseport_v6only_cache: Test terminated by assertion
> # FAIL global.reuseport_v6only_cache
> not ok 1 global.reuseport_v6only_cache
>
> With it:
>
> # RUN global.reuseport_v6only_cache ...
> # OK global.reuseport_v6only_cache
> ok 1 global.reuseport_v6only_cache
>
> Signed-off-by: Juan Agustin Niccolini <juanagusnicco@gmail.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
next prev parent reply other threads:[~2026-11-14 7:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-11 17:47 [PATCH net v2 0/2] tcp: Fix the SO_REUSEPORT bind cache admitting a conflicting socket Juan Agustin Niccolini
2026-11-11 17:47 ` [PATCH net v2 1/2] " Juan Agustin Niccolini
2026-11-14 7:28 ` Kuniyuki Iwashima
2026-11-11 17:47 ` [PATCH net v2 2/2] selftests: net: Add SO_REUSEPORT bind cache test to bind_wildcard.c Juan Agustin Niccolini
2026-11-14 7:29 ` Kuniyuki Iwashima [this message]
2026-11-11 17:51 ` [PATCH net v2 0/2] tcp: Fix the SO_REUSEPORT bind cache admitting a conflicting socket netdev-bot+sinfo
2026-11-11 18:16 ` Juan Agustin Niccolini
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