From patchwork Thu Nov 21 09:36:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13881805 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9745C15C120 for ; Thu, 21 Nov 2024 09:36:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732181804; cv=none; b=qvXBsxPh6YaSlG4E+F2DzxJhoR4cq1emD/rGJCZA4l4FnSZEmbqXgv7rULWb8L3hkP/EIUXAZrq8r8pRQiZefIse5PgFQRzuA/dl9Hu1Ss6aizg7X073ZHi3jjZGSfSs4G8L0tgTqGwPZCXgDtE+LlHBX3PvSc6HMmBk5FzfyW4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732181804; c=relaxed/simple; bh=qwvlwQape1B11fqsgjhKvLt2UCBXoWhWEAXaOPQ4TLM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kN/78rqfES7EIaZl7UXsOieXFWYIzXQKsQ8JlJlVRTDJ7bdN0n+nr3opwMpOIkrpEh4fWS2K2ew7vGxjH3gdubNCV7QcoAJ0EXsAC9tlYU+tpbOZaEVdKmcVH145kPhvIF1VGXkn7eOfVJHVtUaVCnp+QnHNbsdqHGGWTGh1BHg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Fodo0xzd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Fodo0xzd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1457AC4CECC; Thu, 21 Nov 2024 09:36:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732181804; bh=qwvlwQape1B11fqsgjhKvLt2UCBXoWhWEAXaOPQ4TLM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fodo0xzd4Yc62OcrAmacENiabvuAoSbUsLP+b6Ngah/IzaBZvjLygH5gatgZ8GCN+ fvSvktyJadJ+jej/ggm4KqIcsblFHASkPNk6n7ta7qabSi52nV6FUWOSa4T89ugod5 +cVYuUkey/acpSSOXhs+BNOJWqqpb8Ej4N3E+vMMzELn/3Q8xLW0wgQO1JC/VWsBS5 cUEaHO+Si523RXNiaBu131AMV3C5OUBn5rYTcR2Mr0vjbsoBjPi770lkY47gxB3KJE PbWsmqHd00DVp31759YAAy0SYSSNJVDt2x7Xb/v5IvpWb555284smL7J2RzLScron8 nltJEBsVzoITg== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v2 2/3] Squash to "bpf: Add mptcp_subflow bpf_iter" Date: Thu, 21 Nov 2024 17:36:34 +0800 Message-ID: X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Geliang Tang Address Martin's comments in v1: - bpf_iter_mptcp_subflow_new returns -EINVAL when msk socket lock isn't held. Signed-off-by: Geliang Tang --- net/mptcp/bpf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/mptcp/bpf.c b/net/mptcp/bpf.c index 02038db59956..89a7a482368d 100644 --- a/net/mptcp/bpf.c +++ b/net/mptcp/bpf.c @@ -252,7 +252,10 @@ bpf_iter_mptcp_subflow_new(struct bpf_iter_mptcp_subflow *it, if (!msk) return -EINVAL; - msk_owned_by_me(msk); +#ifdef CONFIG_LOCKDEP + if (!lockdep_sock_is_held((const struct sock *)msk)) + return -EINVAL; +#endif kit->pos = &msk->conn_list; return 0;