From mboxrd@z Thu Jan 1 00:00:00 1970 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 AD355405D8; Mon, 8 Jan 2024 12:27:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CDweXKfd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E1A1C433C7; Mon, 8 Jan 2024 12:27:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1704716871; bh=+G5b9k2kYr/Ssctr7RTuveDSyQpoCR8qAoBv4tm6mnE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CDweXKfdTIxq6XiQSkKves1n6GWOh2ZTAJTkX/c0NsGpTTvK8Kz+k6WGM0oA1006p 06CZ+Ik1iIchdOxUR84mhc0XxS1xuqKKM+vBberxlfEXXzW8tcQHaGBMc+f2Hw8ydC 9EcxLvPKueIyLlAPMFWIYbCsVVRIEVIz2rlKd3WIFO5k3QxJTqHeWbcTbxXWITgtAi bEXW9dZZEEqF8qL5Uui9g49Kx0+6Fef5oF0SHy6/b2yB5caEq8O/l/+VvuA56SJ1f8 +i/a1R1AXgvZBVdHf93sMna0bV4pPIWdOIJtBBDwKfX5SWHAzk00s8oXIlKbEdvB3x 9OWb7MdBnLrtA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Siddh Raman Pant , Krzysztof Kozlowski , Suman Ghosh , "David S . Miller" , Sasha Levin , edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 2/8] nfc: Do not send datagram if socket state isn't LLCP_BOUND Date: Mon, 8 Jan 2024 07:27:18 -0500 Message-ID: <20240108122745.2090122-2-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240108122745.2090122-1-sashal@kernel.org> References: <20240108122745.2090122-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.10 Content-Transfer-Encoding: 8bit From: Siddh Raman Pant [ Upstream commit 6ec0d7527c4287369b52df3bcefd21a0c4fb2b7c ] 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 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- 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 645677f84dba2..819157bbb5a2c 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, struct msghdr *msg, } if (sk->sk_type == SOCK_DGRAM) { + if (sk->sk_state != LLCP_BOUND) { + release_sock(sk); + return -ENOTCONN; + } + DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr, msg->msg_name); -- 2.43.0