From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:38006 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757257AbdCXPGv (ORCPT ); Fri, 24 Mar 2017 11:06:51 -0400 Subject: Patch "ext4: fix fencepost in s_first_meta_bg validation" has been added to the 4.4-stable tree To: tytso@mit.edu, gregkh@linuxfoundation.org, jslaby@suse.cz Cc: , From: Date: Fri, 24 Mar 2017 16:06:30 +0100 Message-ID: <1490367990253182@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled ext4: fix fencepost in s_first_meta_bg validation to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ext4-fix-fencepost-in-s_first_meta_bg-validation.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 2ba3e6e8afc9b6188b471f27cf2b5e3cf34e7af2 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Wed, 15 Feb 2017 01:26:39 -0500 Subject: ext4: fix fencepost in s_first_meta_bg validation From: Theodore Ts'o commit 2ba3e6e8afc9b6188b471f27cf2b5e3cf34e7af2 upstream. It is OK for s_first_meta_bg to be equal to the number of block group descriptor blocks. (It rarely happens, but it shouldn't cause any problems.) https://bugzilla.kernel.org/show_bug.cgi?id=194567 Fixes: 3a4b77cd47bb837b8557595ec7425f281f2ca1fe Signed-off-by: Theodore Ts'o Cc: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- fs/ext4/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3666,7 +3666,7 @@ static int ext4_fill_super(struct super_ db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); if (ext4_has_feature_meta_bg(sb)) { - if (le32_to_cpu(es->s_first_meta_bg) >= db_count) { + if (le32_to_cpu(es->s_first_meta_bg) > db_count) { ext4_msg(sb, KERN_WARNING, "first meta block group too large: %u " "(group descriptor block count %u)", Patches currently in stable-queue which might be from tytso@mit.edu are queue-4.4/ext4-fix-fencepost-in-s_first_meta_bg-validation.patch