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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 C14D1C433DF for ; Thu, 20 Aug 2020 12:55:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A11C20674 for ; Thu, 20 Aug 2020 12:55:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597928157; bh=n7wzPQ3M0ERQ59sffFXEWhQWFOF761BQYOzZAulle1Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZmpAt6jNxD8gWRoetke3FLfLvhycQS/RypmMABaz6U9s7E0vYgtYfzvFhJakyS8tQ FFjcCdV+zuO3uUYTbALwtqCEv31MYM+TW+ET4XTOrLwWTO+cmusG8Fvo8CpRILLRSQ x7l+L0wleAHTJPx13V81IItlNcWbGCdxx2e8vbNI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729250AbgHTMzz (ORCPT ); Thu, 20 Aug 2020 08:55:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:39858 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728829AbgHTJm5 (ORCPT ); Thu, 20 Aug 2020 05:42:57 -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 4F98E22CAF; Thu, 20 Aug 2020 09:42:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597916576; bh=n7wzPQ3M0ERQ59sffFXEWhQWFOF761BQYOzZAulle1Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tEFBcOzUVmycW9Xz7YCCHlApfXzHq5Q2aphTOgLlWd2snx6LmD28w7SmPc9bbPOLW R4lfHPPwOfK5cmm7LqAvnEvEcWxhJcKZ5//XBAtDpJ0MrPZo2HcJY+SDGpUq1p8Xx2 TeETvp3GbQw6ZtzxwPoknnezV97BaWpZbbvLmMZw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Biggers , Andrew Morton , Alexander Viro , Qiujun Huang , Linus Torvalds , Sasha Levin Subject: [PATCH 5.7 177/204] fs/minix: fix block limit check for V1 filesystems Date: Thu, 20 Aug 2020 11:21:14 +0200 Message-Id: <20200820091615.045879304@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091606.194320503@linuxfoundation.org> References: <20200820091606.194320503@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eric Biggers [ Upstream commit 0a12c4a8069607247cb8edc3b035a664e636fd9a ] The minix filesystem reads its maximum file size from its on-disk superblock. This value isn't necessarily a multiple of the block size. When it's not, the V1 block mapping code doesn't allow mapping the last possible block. Commit 6ed6a722f9ab ("minixfs: fix block limit check") fixed this in the V2 mapping code. Fix it in the V1 mapping code too. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Biggers Signed-off-by: Andrew Morton Cc: Alexander Viro Cc: Qiujun Huang Link: http://lkml.kernel.org/r/20200628060846.682158-6-ebiggers@kernel.org Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- fs/minix/itree_v1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/minix/itree_v1.c b/fs/minix/itree_v1.c index c0d418209ead1..405573a79aab4 100644 --- a/fs/minix/itree_v1.c +++ b/fs/minix/itree_v1.c @@ -29,7 +29,7 @@ static int block_to_path(struct inode * inode, long block, int offsets[DEPTH]) if (block < 0) { printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n", block, inode->i_sb->s_bdev); - } else if (block >= inode->i_sb->s_maxbytes/BLOCK_SIZE) { + } else if ((u64)block * BLOCK_SIZE >= inode->i_sb->s_maxbytes) { if (printk_ratelimit()) printk("MINIX-fs: block_to_path: " "block %ld too big on dev %pg\n", -- 2.25.1