From patchwork Mon Mar 1 16:11:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 389212 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=-18.8 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, USER_AGENT_GIT autolearn=ham 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 43875C433DB for ; Mon, 1 Mar 2021 20:11:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13C9664E6C for ; Mon, 1 Mar 2021 20:11:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236292AbhCAULq (ORCPT ); Mon, 1 Mar 2021 15:11:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:34914 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238575AbhCAUCa (ORCPT ); Mon, 1 Mar 2021 15:02:30 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C2C4B6538F; Mon, 1 Mar 2021 17:57:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614621450; bh=ZN3zUYvVxiGzRv71wxmn3f2ONDm7+sgHoC/pGjBdXjM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ObczuXDRcjwRcewpNA11zjsC8ngsr+JVmEB2+XbqzDXjPtgDodkmFBMWY7BZ2+6MQ pzZnEBl457jpdwFdJod3nJ0LVsu7aX1ljPD0jAqg8Ac68fQ/zhxhPklp0J4zsRoTbq w3Znl5n9FNfI77WMjuGpBT7b1icHFx8RMnawuaN4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Shiyang Ruan , Joao Martins , Zhang Qilong , Dan Williams , Sasha Levin Subject: [PATCH 5.11 520/775] device-dax: Fix default return code of range_parse() Date: Mon, 1 Mar 2021 17:11:28 +0100 Message-Id: <20210301161227.222066572@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161201.679371205@linuxfoundation.org> References: <20210301161201.679371205@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Shiyang Ruan [ Upstream commit 7323fb22f05ff1d20498d267828870a5fbbaebd6 ] The return value of range_parse() indicates the size when it is positive. The error code should be negative. Signed-off-by: Shiyang Ruan Reviewed-by: Joao Martins Link: https://lore.kernel.org/r/20210126021331.1059933-1-ruansy.fnst@cn.fujitsu.com Reported-by: Zhang Qilong Fixes: 8490e2e25b5a ("device-dax: add a range mapping allocation attribute") Signed-off-by: Dan Williams Signed-off-by: Sasha Levin --- drivers/dax/bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 737b207c9e30d..3003558c1a8bb 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -1038,7 +1038,7 @@ static ssize_t range_parse(const char *opt, size_t len, struct range *range) { unsigned long long addr = 0; char *start, *end, *str; - ssize_t rc = EINVAL; + ssize_t rc = -EINVAL; str = kstrdup(opt, GFP_KERNEL); if (!str)