From nobody Mon Dec 29 02:25:18 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 A1554C10DCE for ; Sat, 2 Dec 2023 15:41:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232975AbjLBPls (ORCPT ); Sat, 2 Dec 2023 10:41:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbjLBPlp (ORCPT ); Sat, 2 Dec 2023 10:41:45 -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 54E6A11F; Sat, 2 Dec 2023 07:41:49 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1701531674; cv=none; d=zohomail.in; s=zohoarc; b=II7atRkYs8DsFlatf6IG3jLHij/WBsxs9ClikySOYt9Ld+Wxut/l+lQGqFv03/QyDQkgW1/iKJV57ETeOp8eyZ5b1AnKX4Wf2rBtqwIpWYGvlNd8RIdsviMPSPLYpt0uh70vZFLlaHIVRhferCocCQ3+c68XoxAGwUkqYiioU6o= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.in; s=zohoarc; t=1701531674; 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=GB7rkLQU8d5MPzNqT5EFrGs6w19XCDgho+G31jgynu6FrgWPiMm2L4mS+BShCCfkLeObe4RXblrAUvVRv8oJrhbkdASnWpWmlBKYJrHRDg7Zzx3ixOe0g2kkgL7256LscGndraMp2awmPngYNR64gf9BzYDo7V8M2sYJCAAnqZk= 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=1701531674; 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=fanfBt63yWMtEPnCArLJt8IPBOtbC+KKbFKtgD2C4ukNf5RgMGkWkLDKuwnsG9mr WU0ca/mPoiAPjysWoRKwWEL6VjR9Gu8FtOgO5/9C7qJq8bN1RmZAIjeoj76ridGLBJR OfPCfPbBuKmKPfi+5921LqlKLLaPECBG/HPhiVCc= Received: from kampyooter.. (122.170.35.155 [122.170.35.155]) by mx.zoho.in with SMTPS id 1701531672332946.1333406858636; Sat, 2 Dec 2023 21:11:12 +0530 (IST) From: Siddh Raman Pant To: Krzysztof Kozlowski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Samuel Ortiz Subject: [PATCH net-next v2 2/2] nfc: Do not send datagram if socket state isn't LLCP_BOUND Date: Sat, 2 Dec 2023 21:10:59 +0530 Message-ID: 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 --- 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