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Sat, 14 Nov 2026 10:45:53 -0800 (PST) Received: from localhost ([153.61.198.243]) by smtp.gmail.com with ESMTPSA id af79cd13be357-9495a5ef5c4sm338706085a.6.2026.11.14.10.45.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 14 Nov 2026 10:45:52 -0800 (PST) X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Sat, 14 Nov 2026 18:45:49 +0000 Message-Id: To: "Michal Luczaj" , "Alexei Starovoitov" , "Daniel Borkmann" , "Andrii Nakryiko" , "Eduard Zingerman" , "Kumar Kartikeya Dwivedi" , "Martin KaFai Lau" , "Song Liu" , "Yonghong Song" , "Jiri Olsa" , "Emil Tsalapatis" , "Ihor Solodrai" , "Shuah Khan" , "John Fastabend" , "Eric Dumazet" , "Kuniyuki Iwashima" , "Paolo Abeni" , "Willem de Bruijn" , "Jakub Sitnicki" , "Jiayuan Chen" , "David S. Miller" , "Jakub Kicinski" , "Simon Horman" , "Jonathan Corbet" , "Shuah Khan" , "Randy Dunlap" , "Stanislav Fomichev" Cc: , , , , , "Sashiko" Subject: Re: [PATCH bpf-next v3 0/8] bpf, sockmap: Restrict iter-context sockmap updates to sockmap iterators From: "Alexei Starovoitov" X-Mailer: aerc 0.20.1-355-gf870624f6c37 References: <20261107-sockmap-update-limit-iter-v3-0-7c0bad1ad036@rbox.co> In-Reply-To: <20261107-sockmap-update-limit-iter-v3-0-7c0bad1ad036@rbox.co> On Sat Nov 7, 2026 at 5:58 PM UTC, Michal Luczaj wrote: > Follow-up to Sashiko's report [1] and the decision to restrict which > iterator may perform sockmap updates [2]. Series started short: remove > about-to-be-stale test, restrict updates, add a negative test. Then it > expanded: mark bpf_iter__sockmap::sk as PTR_TRUSTED, restrict > bpf_sock_destroy() callers to iter/{tcp,udp}, few little tweaks. > > [1]: https://msgid.link/20260626205814.BAC3C1F000E9@smtp.kernel.org > [2]: https://msgid.link/87echn2fhd.fsf@cloudflare.com > > Signed-off-by: Michal Luczaj > --- > Changes in v3: > - Drop RFC prefix > - Update bpf_iter_reg::feature docs > - Fix tcp_request_sock BTF build error > - Restrict allowed callers of bpf_sock_destroy() to iter/{tcp,udp} (Alexe= i) > - Link to v2: https://patch.msgid.link/20261102-sockmap-update-limit-iter= -v2-0-e96a63c43b39@rbox.co Sorry for the delay. Applied.