From: Sechang Lim <rhkrqnwk98@gmail.com>
To: Eric Dumazet <edumazet@google.com>,
Neal Cardwell <ncardwell@google.com>,
John Fastabend <john.fastabend@gmail.com>,
Jakub Sitnicki <jakub@cloudflare.com>,
Jiayuan Chen <jiayuan.chen@linux.dev>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Eduard Zingerman <eddyz87@gmail.com>,
Kumar Kartikeya Dwivedi <memxor@gmail.com>,
Shuah Khan <shuah@kernel.org>
Cc: Kuniyuki Iwashima <kuniyu@google.com>,
Simon Horman <horms@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
Jiri Olsa <jolsa@kernel.org>,
Emil Tsalapatis <emil@etsalapatis.com>,
Ihor Solodrai <ihor.solodrai@linux.dev>,
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 [thread overview]
Message-ID: <20260630205043.184894-1-rhkrqnwk98@gmail.com> (raw)
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
next reply other threads:[~2026-06-30 20:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-30 20:50 Sechang Lim [this message]
2026-06-30 20:50 ` [PATCH bpf 1/2] bpf, sockmap: settle copied_seq when a stream parser is removed Sechang Lim
2026-06-30 20:50 ` [PATCH bpf 2/2] selftests/bpf: test sockmap strparser recover with undelivered ingress Sechang Lim
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