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Message-ID: <0490c52b68c27730d9916ff22c917b4838c32af4.1702925869.git.code@siddh.me> Date: Tue, 19 Dec 2023 23:19:44 +0530 From: Siddh Raman Pant <code@...dh.me> To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Suman Ghosh <sumang@...vell.com> Subject: [PATCH net-next v7 2/2] nfc: Do not send datagram if socket state isn't LLCP_BOUND 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 <code@...dh.me> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> Reviewed-by: Suman Ghosh <sumang@...vell.com> --- 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, 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
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