This bug was fixed in the package util-linux - 2.34-0.1ubuntu9.4
---------------
util-linux (2.34-0.1ubuntu9.4) focal; urgency=medium
* Fix false atari partition detection (LP: #2015355):
- Backport upstream patches to fix atari partition detection in libblkid:
+ debian/patches/libblkid-fix-Atari-prober-logic.patch
+ debian/patches/libblkid-make-Atari-more-robust.patch
- Backport upstream patches to fix atari tests:
+ debian/patches/tests-update-atari-partx-tests.patch
+ debian/patches/tests-update-atari-blkid-tests.patch
+ debian/source/include-binaries: Track changes that are not
representable in quilt patch.
-- Nick Rosbrook <nick.rosbr...@canonical.com> Tue, 30 May 2023
11:42:35 -0400
** Changed in: util-linux (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2015355
Title:
Please backport patches for false atari partition detection to Ubuntu
20.04
Status in util-linux package in Ubuntu:
Fix Released
Status in util-linux source package in Focal:
Fix Released
Bug description:
[Impact]
The partition detection logic in libblkid1 can falsely report the
presence of an atari partition. One place where this has a practical
impact is in kubernetes where mount-utils will refuse to format the
device (https://github.com/kubernetes/mount-
utils/blob/732a08ae47571516020ef99c303c70c1fa5b3e6c/mount_linux.go#L437-L441).
[Test Plan]
* Create a new qcow2 disk image:
$ qemu-img create -f qcow2 test.img 20G
* Boot a focal ISO with QEMU/KVM as if installing to test.img:
$ qemu-system-x86_64 -enable-kvm -m 4096 -name test -drive
file=test.img,format=qcow2 -net nic,model=virtio -net
user,hostfwd=tcp::1022-:22 -vga virtio -cdrom ubuntu-20.04.6-desktop-
amd64.iso
* Using the live environment, format the empty disk. These particular
commands were given as a reproducer on the upstream bug report
(https://github.com/util-linux/util-linux/issues/1116).
$ parted -s /dev/sda -- mklabel msdos
$ parted -s /dev/sda -- mkpart primary 0% 10% mkpart primary 10% 30%
* Run wipefs on /dev/sda to list partitions. On an affected machine,
an atari partition will be listed. On a fixed machine, the incorrect
atari listing will be gone.
$ wipefs /dev/sda
DEVICE OFFSET TYPE UUID LABEL
sda 0x1fe dos
sda 0x1d2 atari
[Where problems could occur]
These patches specifically address the atari prober logic in libblkid.
Therefore, if we saw regressions it would be related to detecting
atari partitions with libblkid. This would potentially impact tools
such as wipefs and blkid, or any other tool that uses libblkid1 for
this purpose.
[Original Description]
There are three patches in util-linux upstream that were released in
util-linux 2.37 and prevent false detection of the atari partition
table with blkid and wipefs. We see this mostly on LUKS devices
initialised via luksFormat reporting there is an atari partition table
on the device when it is empty. This causes issues in various places,
but one key example for us is in kubernetes where mount-utils will
refuse to format the device (https://github.com/kubernetes/mount-
utils/blob/732a08ae47571516020ef99c303c70c1fa5b3e6c/mount_linux.go#L437-L441)
RedHat backported these fixes to RHEL 8 under
https://bugzilla.redhat.com/show_bug.cgi?id=2060030 and it would be
helpful if Ubuntu also backported them to Ubuntu 20.04 which is still
running util-linux 2.34
The request is to backport patches based on the
https://github.com/util-linux/util-linux/issues/1159 upstream report.
Upstream commits to cherry-pick the changes to
libblkid/src/partitions/atari.c from:
2cc76d50d7a14bef8e7b07fab11b26c9e49d36a2
282ceadc3a72fc07dd0388b8880fd751490bb87f
c70b4f2a5b99876d230b8f4f413c3bb3ee6647f1
# lsb_release -a
Distributor ID: Ubuntu
Description: Ubuntu 20.04.6 LTS
Release: 20.04
Codename: focal
# blkid -V
blkid from util-linux 2.34 (libblkid 2.34.0, 14-Jun-2019)
# blkid -p -s TYPE -s PTTYPE -o export
/dev/mapper/pvc-7b331195-cd5a-4ab6-8fdc-552af4b9139d_encrypted
DEVNAME=dev/mapper/pvc-7b331195-cd5a-4ab6-8fdc-552af4b9139d_encrypted
PTTYPE=atari
# lsblk
...
sdc crypto_LUKS
a79d2982-74f2-44c7-bb29-460768ebfe64
`-3600a09803830474a735d4c63744c4a56 crypto_LUKS
a79d2982-74f2-44c7-bb29-460768ebfe64
`-pvc-7b331195-cd5a-4ab6-8fdc-552af4b9139d_encrypted
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