Public bug reported:
Ubuntu 26.04 LTS selects uutils coreutils for /bin/ls. On an NFSv4
mount, uutils ls -l incorrectly reports a '+' ACL marker and inserts
about 200 padding spaces before the link count, although the file has no
extended ACL. This changes one normal long-listing line from 75 bytes to
276 bytes.
Package versions:
- rust-coreutils 0.8.0-0ubuntu3
- coreutils-from-uutils 0.0.0~ubuntu25
- coreutils 9.5-1ubuntu2+0.0.0~ubuntu25
- gnu-coreutils 9.7-3ubuntu2
- build-essential 12.12ubuntu2.26.04.2
Filesystem:
- NFSv4.2 mounted read/write
- Affected entry is an ordinary directory
Steps to reproduce:
cd /ed/backups
ls -ltr | tail -1 | wc -c
ls -ltr | tail -1 | sed -n l
stat -c 'mode=%A links=%h uid=%u gid=%g name=%n' airtop3
getfacl -cp airtop3
Actual result:
wc -c: 276
The ls output begins with:
drwxr-xr-x+
It is then followed by about 200 spaces before:
3 root root 4096 Jul 30 18:41 airtop3
The metadata is normal:
mode=drwxr-xr-x links=3 uid=0 gid=0 name=airtop3
getfacl shows only:
user::rwx
group::r-x
other::r-x
There is no extended ACL that should produce the '+' marker.
Control test with the GNU implementation installed by gnu-coreutils:
/usr/bin/gnuls -ltr | tail -1 | wc -c
Expected and GNU result:
75
Expected behavior:
uutils ls should render the same normal long-listing structure as GNU ls,
without a false ACL marker or excessive padding.
Impact:
This breaks scripts and monitoring that parse or measure standard ls output. It
will affect additional systems as they upgrade to Ubuntu 26.04 and receive
coreutils-from-uutils by default.
Related packaging problem:
Switching to the advertised coreutils-from-gnu provider is not currently a
clean fallback. build-essential depends specifically on coreutils-from-uutils
rather than accepting either coreutils provider. APT therefore proposes
removing build-essential and refuses the transaction because
coreutils-from-uutils is Essential. That packaging dependency should also be
reviewed, although the primary bug here is the incorrect rust-coreutils ls
output.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: rust-coreutils 0.8.0-0ubuntu3
ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12
Uname: Linux 7.0.0-28-generic x86_64
NonfreeKernelModules: zfs nvidia_modeset nvidia
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: X-Cinnamon
Date: Thu Aug 6 12:15:51 2026
InstallationDate: Installed on 2025-03-11 (513 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64
(20240827.1)
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: rust-coreutils
UpgradeStatus: Upgraded to resolute on 2026-04-24 (104 days ago)
** Affects: rust-coreutils (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2162976
Title:
uutils ls adds false ACL marker and 200 spaces on NFSv4 long listing
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