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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 4CEEDC04E87 for ; Mon, 20 May 2019 12:37:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22D18216C4 for ; Mon, 20 May 2019 12:37:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558355827; bh=CaVc0Vmf0CTBvhnD/hDvXM9q76PEYULHxwWmImXaQsw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PqpzuOsLUyXxckjY1BabJnXrgrA/jxF0V1lJbEuRXej8/Q6T2/DxxLD7cziZ7k9kT Ho1Yl+CkzAOj0rpBF4jeD6BGfzeCRKwaV9gCskXF05Fdnx4HSF6iaCpddrlo9z8P1d +NNtOAG1Z4dfOMAtA7tfvj/+m0QjZkc3KFoqNi48= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389909AbfETMgy (ORCPT ); Mon, 20 May 2019 08:36:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:55960 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391374AbfETMgv (ORCPT ); Mon, 20 May 2019 08:36:51 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E5A1520645; Mon, 20 May 2019 12:36:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558355810; bh=CaVc0Vmf0CTBvhnD/hDvXM9q76PEYULHxwWmImXaQsw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U+oT/Q1Q5HEjNkhaPKLhfL+r5yEjHRvOXMsDzySJ9omtMk73puec7y6GhnFaUO0Sf Sr1yjN061MHGq6BjbiHm81enI84PwOWsuuY/0asVInbU14K1XELAQxJ0Hd33+Tt7da uQsLf+OL+8bI6ABbL+6aqK2xiFKux0znn0Onk2NM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , Theodore Tso Subject: [PATCH 5.1 127/128] ext4: unsigned int compared against zero Date: Mon, 20 May 2019 14:15:14 +0200 Message-Id: <20190520115257.149588306@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190520115249.449077487@linuxfoundation.org> References: <20190520115249.449077487@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Colin Ian King commit fbbbbd2f28aec991f3fbc248df211550fbdfd58c upstream. There are two cases where u32 variables n and err are being checked for less than zero error values, the checks is always false because the variables are not signed. Fix this by making the variables ints. Addresses-Coverity: ("Unsigned compared against 0") Fixes: 345c0dbf3a30 ("ext4: protect journal inode's blocks using block_validity") Signed-off-by: Colin Ian King Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/block_validity.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -142,7 +142,8 @@ static int ext4_protect_reserved_inode(s struct inode *inode; struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_map_blocks map; - u32 i = 0, err = 0, num, n; + u32 i = 0, num; + int err = 0, n; if ((ino < EXT4_ROOT_INO) || (ino > le32_to_cpu(sbi->s_es->s_inodes_count)))