linux-ext4 - Fwd: ext4_check_descriptors: Block bitmap for group 0 overlaps block group descriptors

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 11 Jun 2023 09:27:45 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Theodore Ts'o <tytso@....edu>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux ext4 Development <linux-ext4@...r.kernel.org>
Subject: Fwd: ext4_check_descriptors: Block bitmap for group 0 overlaps block
 group descriptors

Hi,

I notice a regression report on Bugzilla [1]. Quoting from it:

> Hi,
> 
> Fail to mount a filesystem in kernel 6.4.0
> 
> The Filesystem is clean. fsck -fp reports no errors
> 
> # uname -a
> Linux medusa.dds.de 6.4.0-rc5 #2 SMP PREEMPT_DYNAMIC Wed Jun  7 08:11:59 CEST 2023 x86_64 GNU/Linux
> # mount /dev/bigvg/lv_dat /mnt
> mount: /mnt: mount(2) system call failed: Structure needs cleaning.
>        dmesg(1) may have more information after failed mount system call.
> 
> Under Kernel 6.3.4 everything works with this Filesystem

The reporter then pasted short dmesg snippet:

> [  104.501659] EXT4-fs (dm-9): ext4_check_descriptors: Block bitmap for group 0 overlaps block group descriptors
> [  104.501664] EXT4-fs (dm-9): group descriptors corrupted!
> 

See Bugzilla for the full thread and attached dumpe2fs, lspci, and systeminfo.

Anyway, I'm adding it to regzbot:

#regzbot introduced: v6.3..v6.4 https://bugzilla.kernel.org/show_bug.cgi?id=217534
#regzbot title: Block bitmap for group 0 overlaps block group descriptors, causing mount failure

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217534

-- 
An old man doll... just what I always wanted! - Clara