From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AEB48C433B4 for ; Mon, 17 May 2021 14:24:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9049E619A4 for ; Mon, 17 May 2021 14:24:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237597AbhEQOZc (ORCPT ); Mon, 17 May 2021 10:25:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:35732 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239193AbhEQOWS (ORCPT ); Mon, 17 May 2021 10:22:18 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F1390610A0; Mon, 17 May 2021 14:11:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621260708; bh=wRIMUKf8f9czpJ2k7bhptKZpLNn6+LmfvKRAV48OawA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vpm1sQ/DnANcPtXlmawCRMxaiP4XUX56NSoYOD7RzNfBzffBBw0/7df7C4HytRpfx 0DM/r9EG1Bq1q12BblBEREFUl+hnGeSutlECAvqjSw8EFcbJBqRHQVy1VQRy2sw2q9 GcAxKQK5VEO0UVBbMWSR65JQjH0kzeRuIsfvCtpU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Md Haris Iqbal , Guoqing Jiang , Jack Wang , Gioh Kim , Jens Axboe , Sasha Levin Subject: [PATCH 5.12 204/363] block/rnbd-clt: Check the return value of the function rtrs_clt_query Date: Mon, 17 May 2021 16:01:10 +0200 Message-Id: <20210517140309.479153706@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140302.508966430@linuxfoundation.org> References: <20210517140302.508966430@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Md Haris Iqbal [ Upstream commit 1056ad829ec43f9b705b507c2093b05e2088b0b7 ] In case none of the paths are in connected state, the function rtrs_clt_query returns an error. In such a case, error out since the values in the rtrs_attrs structure would be garbage. Fixes: f7a7a5c228d45 ("block/rnbd: client: main functionality") Signed-off-by: Md Haris Iqbal Reviewed-by: Guoqing Jiang Signed-off-by: Jack Wang Signed-off-by: Gioh Kim Link: https://lore.kernel.org/r/20210428061359.206794-4-gi-oh.kim@ionos.com Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/block/rnbd/rnbd-clt.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c index 45a470076652..5ab7319ff2ea 100644 --- a/drivers/block/rnbd/rnbd-clt.c +++ b/drivers/block/rnbd/rnbd-clt.c @@ -693,7 +693,11 @@ static void remap_devs(struct rnbd_clt_session *sess) return; } - rtrs_clt_query(sess->rtrs, &attrs); + err = rtrs_clt_query(sess->rtrs, &attrs); + if (err) { + pr_err("rtrs_clt_query(\"%s\"): %d\n", sess->sessname, err); + return; + } mutex_lock(&sess->lock); sess->max_io_size = attrs.max_io_size; @@ -1234,7 +1238,11 @@ find_and_get_or_create_sess(const char *sessname, err = PTR_ERR(sess->rtrs); goto wake_up_and_put; } - rtrs_clt_query(sess->rtrs, &attrs); + + err = rtrs_clt_query(sess->rtrs, &attrs); + if (err) + goto close_rtrs; + sess->max_io_size = attrs.max_io_size; sess->queue_depth = attrs.queue_depth; -- 2.30.2