From nobody Sun Oct 25 09:31:22 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AD0A39EF0F for ; Mon, 22 Jun 2026 09:39:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782121159; cv=none; b=DdJf6RtQqOvDke2rSwUOR2xiZ/aZRhRPc+vDI0Kd2/h9krfvKy+0AW02kz1YwnOGjzXYYGo5t36fgPb45LqDK2hQuKVQFXtcRkOs7qt1dCX5C9GFvZ3CNHv3vyd8wyvdtKi0xz7JByEEiW1Cy6Fp/n7nPHSZAw3vxO6kJB2qscA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782121159; c=relaxed/simple; bh=IErpFUPr4F0Wg4DT70wFdFLClTSczriFqwGywlHWx4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Nj7m6chI3cTpWo7YH6lVzYMc9Fs19RWzSWjQeurTWcoD15xPyaOCiTHj/Tt9ZlcnrS+9ZzgGNimMZ5EEsLd1LaH2+ajKCuIIGFOGMnhK+3IHAD22ainFgpTjc62gGeI9YjPKiwoQ1Wg8/uL+X0FDMnE7Njp9qQFLVJspydvuCjU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L9xxiWWF; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L9xxiWWF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 084311F00A3A; Mon, 22 Jun 2026 09:39:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782121158; bh=xPjQnFtjHyJFDw1ksBOha8hhRPCso1Lg4TAxQ0/QqOE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=L9xxiWWFLFUM1EFNKwppm/7Kc5rfPHlknHLfg8j9Kdqu6f2jcOnZPf1Q2Izdo/QSF j4b8sE80u6w8NgbJHPrrrNsSymRvMZFv2muifW/la05c8pY2sYusVQ2o5mU9+Kjs5C /3GqdxJ12p8JXvrD+DKCx5OEYJXfzFuPqS7xO3rE+4+tRU8+SG+91mdqB2zvJJ/kXh ueh9z1tgksrdtkAhOlFDg/rV1cR/TcUrTKOxKmSO2TpDKxLRfPx2Z5XYMcE/ahFgii XmFiqxWdiTAIyu282AYT4X4vFWGd2TeE2Xr5TgaJ2FyHcNZ7bz3vekID1BdrD1PMnm OSQW++Q1sgKjQ== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v3 1/6] Squash to "bpf: Add mptcp_subflow bpf_iter" Date: Mon, 22 Jun 2026 17:38:58 +0800 Message-ID: <9fa1b234bb66304014259d057fff2d1cd52faaad.1782120674.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang Zero iterator state on error paths and add sk_type =3D=3D SOCK_STREAM check= to prevent raw sockets from bypassing validation. Signed-off-by: Geliang Tang --- net/mptcp/bpf.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/net/mptcp/bpf.c b/net/mptcp/bpf.c index 08bb037f0951..cb2dddb7c3a6 100644 --- a/net/mptcp/bpf.c +++ b/net/mptcp/bpf.c @@ -252,11 +252,18 @@ bpf_iter_mptcp_subflow_new(struct bpf_iter_mptcp_subf= low *it, BUILD_BUG_ON(__alignof__(struct bpf_iter_mptcp_subflow_kern) !=3D __alignof__(struct bpf_iter_mptcp_subflow)); =20 - if (unlikely(!sk || !sk_fullsock(sk))) + if (unlikely(!sk || !sk_fullsock(sk))) { + kit->msk =3D NULL; + kit->pos =3D NULL; return -EINVAL; + } =20 - if (sk->sk_protocol !=3D IPPROTO_MPTCP) + if (sk->sk_type !=3D SOCK_STREAM || + sk->sk_protocol !=3D IPPROTO_MPTCP) { + kit->msk =3D NULL; + kit->pos =3D NULL; return -EINVAL; + } =20 msk =3D mptcp_sk(sk); =20 --=20 2.53.0