From nobody Mon Dec 29 00:38:44 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26390C4167B for ; Mon, 4 Dec 2023 13:09:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344299AbjLDNJ2 (ORCPT ); Mon, 4 Dec 2023 08:09:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235479AbjLDNJE (ORCPT ); Mon, 4 Dec 2023 08:09:04 -0500 Received: from sender-of-o51.zoho.in (sender-of-o51.zoho.in [103.117.158.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63B8FD6C; Mon, 4 Dec 2023 05:09:06 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1701695310; cv=none; d=zohomail.in; s=zohoarc; b=KYKagfJwLJR/l2o8XdfQVvnTVoHBVbs/XFi1NE+ZFOzvPe9C3MeySQ6dsR7fuVze0enMACOpYdyse/VXY4TQOpztCd15R/HQt1dFpQo+0PIaRIxYhokDzi8H+w1lZpMeLsUZuZa3OirrMlDF+P5attVlRK71URPWgknHGqceuo4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.in; s=zohoarc; t=1701695310; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=hsnJ/KNlUs6XiyX2XlbfSpC3bHgmAF/BmM03d8xcwm0=; b=JD6UklVpZawlW1B9bazsFAdMttK/iEEh6W47YGXECq1gfQzXSDbz1EBzeCpM4FEi1z8o5Fa4P3EEhV/F+7RmIzy+b8eVYQphWBZZfcHGX8CvAb3kuIsvfL2LT/a2Mps3WTcwiz8MsVO/k/K52uxBmGW9nBnB7aUjljZLjLgLoaA= ARC-Authentication-Results: i=1; mx.zohomail.in; dkim=pass header.i=siddh.me; spf=pass smtp.mailfrom=code@siddh.me; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1701695310; s=zmail; d=siddh.me; i=code@siddh.me; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=hsnJ/KNlUs6XiyX2XlbfSpC3bHgmAF/BmM03d8xcwm0=; b=fZFzcVqId17iVSznukaO7vQYfftfVedXOqu0E3Xx9IHvtMr1JZUQVWuFZBWeRZwc JDm8i+f3I+w0UvjU6WCKAjd/Kv5aHQMZ1sSRBM3uAqdnv+VSNFM2Ba+MpSsrPPRgSEM PlFcAHRQGxUy4LMsKZ+VcWT4Z4zOv06xCvGfCt/M= Received: from kampyooter.. (223.229.148.242 [223.229.148.242]) by mx.zoho.in with SMTPS id 1701695308912849.1027651405482; Mon, 4 Dec 2023 18:38:28 +0530 (IST) From: Siddh Raman Pant To: Krzysztof Kozlowski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Suman Ghosh Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v3 2/2] nfc: Do not send datagram if socket state isn't LLCP_BOUND Date: Mon, 4 Dec 2023 18:38:22 +0530 Message-ID: <727e1ff5df5e8d36e19b25155b1555ed3fd0cdfe.1701627492.git.code@siddh.me> X-Mailer: git-send-email 2.42.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" As we know we cannot send the datagram (state can be set to LLCP_CLOSED by nfc_llcp_socket_release()), there is no need to proceed further. Thus, bail out early from llcp_sock_sendmsg(). Signed-off-by: Siddh Raman Pant Reviewed-by: Krzysztof Kozlowski Reviewed-by: Suman Ghosh --- net/nfc/llcp_sock.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c index 645677f84dba..819157bbb5a2 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -796,6 +796,11 @@ static int llcp_sock_sendmsg(struct socket *sock, stru= ct msghdr *msg, } =20 if (sk->sk_type =3D=3D SOCK_DGRAM) { + if (sk->sk_state !=3D LLCP_BOUND) { + release_sock(sk); + return -ENOTCONN; + } + DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr, msg->msg_name); =20 --=20 2.42.0