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([147.46.174.222]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ca382ba1ccsm20322305ad.66.2026.06.30.13.50.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2026 13:50:55 -0700 (PDT) From: Sechang Lim To: Eric Dumazet , Neal Cardwell , John Fastabend , Jakub Sitnicki , Jiayuan Chen , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Shuah Khan Cc: Kuniyuki Iwashima , Simon Horman , Martin KaFai Lau , Song Liu , Yonghong Song , Jiri Olsa , Emil Tsalapatis , Ihor Solodrai , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf 0/2] bpf, sockmap: fix copied_seq left behind when a stream parser is removed Date: Tue, 30 Jun 2026 20:50:33 +0000 Message-ID: <20260630205043.184894-1-rhkrqnwk98@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit A stream-parser sockmap socket can be removed with SK_PASS data still parked on its ingress_msg queue. The copied_seq rollback for that data is never repaid, leaving copied_seq behind sk_receive_queue, so the native tcp_recvmsg() warns. Patch 1 settles copied_seq on removal. Patch 2 adds a selftest. Sechang Lim (2): bpf, sockmap: settle copied_seq when a stream parser is removed selftests/bpf: test sockmap strparser recover with undelivered ingress net/ipv4/tcp_bpf.c | 9 +++ .../selftests/bpf/prog_tests/sockmap_basic.c | 59 +++++++++++++++++++ 2 files changed, 68 insertions(+) -- 2.43.0