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 5024314A9E for ; Mon, 26 Jun 2023 18:30:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BEDC2C433C8; Mon, 26 Jun 2023 18:30:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1687804224; bh=MlswrwMQP56Pi/z/UhASEXmuzdhIygzlY/TiIqb6phw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jTOeZD0wSkC0DK23aDSK7r/TtkrQkkeCKr+0OGlKBWRx08v5u9ddkCY8Dv92SY33m 5XNqrn4ERjC7Nu4xcEY/8hywGLcQOOaMTYRw3LE6S1x6XCo8MKQ+3/+go3KxFqtRp2 VSQu8jDqWrRm/TB/ho6Q5yAl1B5kF9RKwizXk1rk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Stefan Metzmacher , Jens Axboe Subject: [PATCH 6.1 055/170] io_uring/net: clear msg_controllen on partial sendmsg retry Date: Mon, 26 Jun 2023 20:10:24 +0200 Message-ID: <20230626180803.042579520@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230626180800.476539630@linuxfoundation.org> References: <20230626180800.476539630@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Jens Axboe commit b1dc492087db0f2e5a45f1072a743d04618dd6be upstream. If we have cmsg attached AND we transferred partial data at least, clear msg_controllen on retry so we don't attempt to send that again. Cc: stable@vger.kernel.org # 5.10+ Fixes: cac9e4418f4c ("io_uring/net: save msghdr->msg_control for retries") Reported-by: Stefan Metzmacher Reviewed-by: Stefan Metzmacher Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- io_uring/net.c | 2 ++ 1 file changed, 2 insertions(+) --- a/io_uring/net.c +++ b/io_uring/net.c @@ -313,6 +313,8 @@ int io_sendmsg(struct io_kiocb *req, uns if (ret == -EAGAIN && (issue_flags & IO_URING_F_NONBLOCK)) return io_setup_async_msg(req, kmsg, issue_flags); if (ret > 0 && io_net_retry(sock, flags)) { + kmsg->msg.msg_controllen = 0; + kmsg->msg.msg_control = NULL; sr->done_io += ret; req->flags |= REQ_F_PARTIAL_IO; return io_setup_async_msg(req, kmsg, issue_flags);