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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 DEEA7ECDFAA for ; Mon, 16 Jul 2018 22:28:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9ED54208E8 for ; Mon, 16 Jul 2018 22:28:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9ED54208E8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=embeddedor.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730116AbeGPW5c (ORCPT ); Mon, 16 Jul 2018 18:57:32 -0400 Received: from gateway31.websitewelcome.com ([192.185.143.47]:31707 "EHLO gateway31.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728784AbeGPW5c (ORCPT ); Mon, 16 Jul 2018 18:57:32 -0400 Received: from cm13.websitewelcome.com (cm13.websitewelcome.com [100.42.49.6]) by gateway31.websitewelcome.com (Postfix) with ESMTP id 97BFE1E6710 for ; Mon, 16 Jul 2018 17:03:07 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id fBaFfVAli79N3fBaFfrmG1; Mon, 16 Jul 2018 17:03:07 -0500 X-Authority-Reason: nr=8 Received: from [189.250.65.56] (port=57876 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.91) (envelope-from ) id 1ffBaF-002hQi-39; Mon, 16 Jul 2018 17:03:07 -0500 Date: Mon, 16 Jul 2018 17:03:06 -0500 From: "Gustavo A. R. Silva" To: David Howells , Alexander Viro Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] fsinfo: Fix off-by-one bug Message-ID: <20180716220306.GA10773@embeddedor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.65.56 X-Source-L: No X-Exim-ID: 1ffBaF-002hQi-39 X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.250.65.56]:57876 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 4 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The current code reads one element beyond the end of the fsinfo_buffer_sizes array. Fixes: 4e635f61dd55 ("fsinfo: Add a system call to allow querying of filesystem information") Signed-off-by: Gustavo A. R. Silva --- fs/statfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/statfs.c b/fs/statfs.c index 3b8e2700..2a28581 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -791,7 +791,7 @@ SYSCALL_DEFINE5(fsinfo, params.Mth = user_params.Mth; } else { params.at_flags = 0; - params.request = fsinfo_attr_statfs; + params.request = fsinfo_attr_statfs - 1; params.Nth = 0; params.Mth = 0; } -- 2.7.4