Reproduced on armhf under stonking.
Root cause:
On 32-bit Linux, nix::dir::Dir calls glibc 32-bit readdir(). When directory
offsets (d_off) exceed 31 bits (common with OverlayFS, tmpfs, or ext4 64-bit
dirhash on 64-bit kernels), readdir() returns EOVERFLOW ("Value too large for
defined data type").
In uu_rm safe_remove_dir_recursive, directory read errors were silenced by
handle_error_with_force(), leaving files in the directory intact and causing
subsequent rmdir() to fail with ENOTEMPTY ("Directory not empty").
Fix:
Switch read_dir_entries() in uucore safe_traversal from nix::dir::Dir to
rustix::fs::Dir. It calls readdir64/getdents64 on Linux, handling 64-bit
offsets without overflow on 32-bit.
Upstream PR:
https://github.com/uutils/coreutils/pull/15036
Tested on armhf container:
- Before: rm -rf on /var/lib/dpkg/tmp.ci fails with "Directory not empty" (exit
1).
- After: rm -rf removes the directory and all entries cleanly (exit 0). Package
installation via dpkg/apt finishes without cleanup errors.
Attached debdiff:
rust-coreutils_0.12.0-1ubuntu2.debdiff (applies with 0 fuzz against
0.12.0-1ubuntu1.dsc).
** Description changed:
+ [ Impact ]
+
+ On 32-bit armhf stonking, apt/dpkg fails during package cleanup:
+ rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
+ dpkg: error while cleaning up: rm command for cleanup subprocess failed
with exit status 1
+
+ read_dir_entries() in uucore uses nix::dir::Dir, which calls glibc
+ 32-bit readdir(). When directory offsets (d_off) exceed 31 bits (common
+ on 64-bit kernels with OverlayFS, tmpfs, or ext4 64-bit dirhash),
+ readdir() fails with EOVERFLOW.
+
+ In uu_rm, read errors in rm -rf were swallowed by
+ handle_error_with_force(), leaving files in place. The following rmdir()
+ then fails with ENOTEMPTY. This breaks package installation on armhf.
+
+ [ Fix ]
+
+ Switch read_dir_entries() in uucore safe_traversal from nix::dir::Dir to
+ rustix::fs::Dir, which uses 64-bit readdir64/getdents64.
+
+ [ Test Plan ]
+
+ 1. In an armhf stonking container:
+ mkdir -p /var/lib/dpkg/tmp.ci && touch /var/lib/dpkg/tmp.ci/control
+ rm -rf /var/lib/dpkg/tmp.ci
+ or:
+ apt-get update && apt-get install -y openssl
+ 2. Without patch:
+ rm fails with:
+ rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty (exit 1)
+ 3. With patch:
+ Exit 0, directory is removed, apt/dpkg finishes cleanly.
+
+ [ Where problems could occur ]
+
+ Changes are limited to directory enumeration in safe_traversal. If
+ rustix had an issue in directory iteration, utilities like rm or chmod
+ could fail to list directory entries. Tested with cargo unit tests and
+ live rm on armhf.
+
+ [ Other Info ]
+
+ - Upstream PR: https://github.com/uutils/coreutils/pull/15036
+ - Target devel series: stonking (Ubuntu 26.10)
+ - Debdiff attached: rust-coreutils_0.12.0-1ubuntu2.debdiff (applies cleanly
against archive 0.12.0-1ubuntu1.dsc with 0 fuzz, 0 rejects).
+
+
+ ----- Old Descr. -----
+
+
On Ubuntu Stonking on the armhf architecture, `dpkg` is failing whenever I
try to `apt install` any package, with the following error:
```
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error while cleaning up:
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
```
I was able to reproduce this in a docker environment as well:
```
➜ docker run --rm -it --platform linux/armhf ubuntu:26.10 bash
root@ffa63238f77e:/# apt-get update
Get:1 http://ports.ubuntu.com/ubuntu-ports stonking InRelease [170 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports stonking-updates InRelease [60.7
kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports stonking-backports InRelease [60.7
kB]
Get:4 http://ports.ubuntu.com/ubuntu-ports stonking-security InRelease [60.7
kB]
Get:5 http://ports.ubuntu.com/ubuntu-ports stonking/restricted armhf Packages
[890 B]
Get:6 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf Packages [1180
kB]
Get:7 http://ports.ubuntu.com/ubuntu-ports stonking/universe armhf Packages
[13.7 MB]
Get:8 http://ports.ubuntu.com/ubuntu-ports stonking/multiverse armhf Packages
[151 kB]
Fetched 15.4 MB in 5s (2850 kB/s)
Reading package lists... Done
root@ffa63238f77e:/# apt-get install curl
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Solving dependencies... Done
The following additional packages will be installed:
- bash-completion ca-certificates krb5-locales libbrotli1 libcurl4t64
libgssapi-krb5-2 libidn2-0 libk5crypto3 libkeyutils1
- libkrb5-3 libkrb5support0 libldap-common libldap2 libnghttp2-14 libpsl5t64
libsasl2-2 libsasl2-modules libsasl2-modules-db
- libssh2-1t64 libunistring5 libupki-openssl1 openssl publicsuffix upki
+ bash-completion ca-certificates krb5-locales libbrotli1 libcurl4t64
libgssapi-krb5-2 libidn2-0 libk5crypto3 libkeyutils1
+ libkrb5-3 libkrb5support0 libldap-common libldap2 libnghttp2-14 libpsl5t64
libsasl2-2 libsasl2-modules libsasl2-modules-db
+ libssh2-1t64 libunistring5 libupki-openssl1 openssl publicsuffix upki
Suggested packages:
- krb5-doc krb5-user libsasl2-modules-gssapi-mit |
libsasl2-modules-gssapi-heimdal libsasl2-modules-ldap libsasl2-modules-otp
- libsasl2-modules-sql
+ krb5-doc krb5-user libsasl2-modules-gssapi-mit |
libsasl2-modules-gssapi-heimdal libsasl2-modules-ldap libsasl2-modules-otp
+ libsasl2-modules-sql
The following NEW packages will be installed:
- bash-completion ca-certificates curl krb5-locales libbrotli1 libcurl4t64
libgssapi-krb5-2 libidn2-0 libk5crypto3
- libkeyutils1 libkrb5-3 libkrb5support0 libldap-common libldap2
libnghttp2-14 libpsl5t64 libsasl2-2 libsasl2-modules
- libsasl2-modules-db libssh2-1t64 libunistring5 libupki-openssl1 openssl
publicsuffix upki
+ bash-completion ca-certificates curl krb5-locales libbrotli1 libcurl4t64
libgssapi-krb5-2 libidn2-0 libk5crypto3
+ libkeyutils1 libkrb5-3 libkrb5support0 libldap-common libldap2
libnghttp2-14 libpsl5t64 libsasl2-2 libsasl2-modules
+ libsasl2-modules-db libssh2-1t64 libunistring5 libupki-openssl1 openssl
publicsuffix upki
0 upgraded, 25 newly installed, 0 to remove and 8 not upgraded.
Need to get 5852 kB of archives.
After this operation, 16.6 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf openssl armhf
4.0.1-1ubuntu4 [1258 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
ca-certificates all 20260816 [135 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf krb5-locales
all 1.22.1-3ubuntu2 [14.0 kB]
Get:4 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
libkrb5support0 armhf 1.22.1-3ubuntu2 [31.1 kB]
Get:5 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libk5crypto3
armhf 1.22.1-3ubuntu2 [79.2 kB]
Get:6 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libkeyutils1
armhf 1.6.3-6ubuntu3 [9366 B]
Get:7 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libkrb5-3
armhf 1.22.1-3ubuntu2 [321 kB]
Get:8 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
libgssapi-krb5-2 armhf 1.22.1-3ubuntu2 [122 kB]
Get:9 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libunistring5
armhf 1.4.2-1 [587 kB]
Get:10 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libidn2-0
armhf 2.3.8-5 [96.5 kB]
Get:11 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
bash-completion all 1:2.16.0-8build1 [214 kB]
Get:12 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libnghttp2-14
armhf 1.70.0-1 [66.3 kB]
Get:13 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libpsl5t64
armhf 0.23.3-1 [59.4 kB]
Get:14 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf publicsuffix
all 20260725.1419-1 [140 kB]
Get:15 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libbrotli1
armhf 1.2.0-4 [318 kB]
Get:16 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
libsasl2-modules-db armhf 2.1.28+dfsg1-11ubuntu2 [17.0 kB]
Get:17 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libsasl2-2
armhf 2.1.28+dfsg1-11ubuntu2 [49.9 kB]
Get:18 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
libldap-common all 2.6.13+dfsg-1ubuntu3 [26.1 kB]
Get:19 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libldap2
armhf 2.6.13+dfsg-1ubuntu3 [170 kB]
Get:20 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libssh2-1t64
armhf 1.11.1-4ubuntu3 [117 kB]
Get:21 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
libupki-openssl1 armhf 1.0.0~beta.3+repack-0ubuntu2 [263 kB]
Get:22 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf libcurl4t64
armhf 8.20.0-2ubuntu10 [369 kB]
Get:23 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf curl armhf
8.20.0-2ubuntu10 [267 kB]
Get:24 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf
libsasl2-modules armhf 2.1.28+dfsg1-11ubuntu2 [61.1 kB]
Get:25 http://ports.ubuntu.com/ubuntu-ports stonking/main armhf upki armhf
1.0.0~beta.3+repack-0ubuntu2 [1059 kB]
Fetched 5852 kB in 3s (2311 kB/s)
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based
frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line
79, <STDIN> line 25.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (Can't locate Term/ReadLine.pm in @INC (you may need to install the
Term::ReadLine module) (@INC entries checked: /etc/perl
/usr/local/lib/arm-linux-gnueabihf/perl/5.40.1 /usr/local/share/perl/5.40.1
/usr/lib/arm-linux-gnueabihf/perl5/5.40 /usr/share/perl5
/usr/lib/arm-linux-gnueabihf/perl-base /usr/lib/arm-linux-gnueabihf/perl/5.40
/usr/share/perl/5.40 /usr/local/lib/site_perl) at
/usr/share/perl5/Debconf/FrontEnd/Readline.pm line 8, <STDIN> line 25.)
debconf: falling back to frontend: Teletype
Preconfiguring packages ...
Selecting previously unselected package openssl.
(Reading database ... 8692 files and directories currently installed.)
Preparing to unpack .../00-openssl_4.0.1-1ubuntu4_armhf.deb ...
Unpacking openssl (4.0.1-1ubuntu4) ...
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error while cleaning up:
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/01-ca-certificates_20260816_all.deb (--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/02-krb5-locales_1.22.1-3ubuntu2_all.deb (--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/03-libkrb5support0_1.22.1-3ubuntu2_armhf.deb
(--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/04-libk5crypto3_1.22.1-3ubuntu2_armhf.deb
(--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/05-libkeyutils1_1.6.3-6ubuntu3_armhf.deb
(--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/06-libkrb5-3_1.22.1-3ubuntu2_armhf.deb (--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/07-libgssapi-krb5-2_1.22.1-3ubuntu2_armhf.deb
(--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/08-libunistring5_1.4.2-1_armhf.deb (--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/09-libidn2-0_2.3.8-5_armhf.deb (--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/10-bash-completion_1%3a2.16.0-8build1_all.deb
(--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
rm: cannot remove '/var/lib/dpkg/tmp.ci': Directory not empty
dpkg: error processing archive
/tmp/apt-dpkg-install-mPd3Ke/11-libnghttp2-14_1.70.0-1_armhf.deb (--unpack):
- rm command for cleanup subprocess failed with exit status 1
+ rm command for cleanup subprocess failed with exit status 1
root@4ecf0321a01f:/# dpkg --version
Debian 'dpkg' package management program version 1.23.7 (armhf).
This is free software; see the GNU General Public License version 2 or
later for copying conditions. There is NO warranty.
```
** Patch added: "rust-coreutils 0.12.0-1ubuntu2 debdiff for stonking"
https://bugs.launchpad.net/ubuntu/+source/rust-coreutils/+bug/2169271/+attachment/6004960/+files/rust-coreutils_0.12.0-1ubuntu2.debdiff
** Tags added: armhf dpkg patch stonking
** Changed in: rust-coreutils (Ubuntu)
Status: New => Confirmed
** Changed in: dpkg (Ubuntu)
Status: New => Invalid
--
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https://bugs.launchpad.net/bugs/2169271
Title:
dpkg fails on Stonking on armhf architecture
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