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Date: Tue, 18 Aug 2026 20:17:10 -0300
From: Antonio Terceiro &lt;terceiro@debian.org&gt;
To: submit@bugs.debian.org
Subject: csync2: autopkgtest fails under incus-lxc: ss: not found
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Source: csync2
Version: 2.0-42-g83b3644-6
Severity: important
Justification: fails autopkgtest on Debian CI infrastructure
Tags: forky sid
User: debian-ci@lists.debian.org
Usertags: lxc

Hi,

Debian CI is switching away from lxc containers in favor of incus Container=
s.
This is motivated by security concerns from us; incus is based on lxc, but
orchestrates containers substantially different: containers are not privile=
ged
(so root in the container is not uid 0 outside of it, and incus imposes a
stricter isolation from the host system.

csync2 passes its tests under lxc, but fails under incus.
The relevant part of the failure is (hopefully):

&gt; Setting up libcom-err2:amd64 (1.47.4-1) ...
&gt; Setting up libgomp1:amd64 (16.1.0-3) ...
&gt; Setting up libkrb5support0:amd64 (1.22.1-3) ...
&gt; Setting up libwrap0:amd64 (7.6.q-37) ...
&gt; Setting up libunistring5:amd64 (1.4.2-1) ...
&gt; Setting up libk5crypto3:amd64 (1.22.1-3) ...
&gt; Setting up libffi8:amd64 (3.7.1-2) ...
&gt; Setting up libtasn1-6:amd64 (4.21.0-2+b1) ...
&gt; Setting up netbase (6.5) ...
&gt; Setting up libkrb5-3:amd64 (1.22.1-3) ...
&gt; Setting up tcpd (7.6.q-37) ...
&gt; Setting up readline-common (8.3-4) ...
&gt; Setting up libb2-1:amd64 (0.98.1-1.1+b3) ...
&gt; Setting up libidn2-0:amd64 (2.3.8-5) ...
&gt; Setting up librsync2t64:amd64 (2.3.4-1.1+b2) ...
&gt; Setting up libp11-kit0:amd64 (0.26.4-1) ...
&gt; Setting up libgssapi-krb5-2:amd64 (1.22.1-3) ...
&gt; Setting up libreadline8t64:amd64 (8.3-4) ...
&gt; Setting up sqlite3 (3.53.4-2) ...
&gt; Setting up libgnutls30t64:amd64 (3.8.13-1) ...
&gt; Setting up libtirpc3t64:amd64 (1.3.7+ds-1) ...
&gt; Setting up csync2 (2.0-42-g83b3644-6) ...
&gt; Use of uninitialized value $_ in pattern match (m//) at /usr/share/perl5/=
DebianNet.pm line 591.
&gt; Setting up openbsd-inetd (0.20221205-3+b2) ...
&gt; Created symlink '/etc/systemd/system/multi-user.target.wants/inetd.servic=
e' =E2=86=92 '/usr/lib/systemd/system/inetd.service'.
&gt; Processing triggers for libc-bin (2.42-17) ...
&gt; autopkgtest [20:55:38]: test inetd: [-----------------------
&gt; .+........+.+..+.........+....+.....+......+..........+++++++++++++++++++=
++++++++++++++++++++*.....+...+..+.+.......................+.......+.......=
=2E......+..........+......+........+++++++++++++++++++++++++++++++++++++++=
*.....+....+...........+.+........+........................+...+....+.....+=
=2E...+..+...+............+..........+...+....................+....+...+...=
=2E.+....+.......................+................+......+......+........+.=
+......++++++
&gt; .+......+.....+....+.....+++++++++++++++++++++++++++++++++++++++*........=
=2E......+....+..+.......+..+.+..............+......+...............+....+.=
=2E.+......+++++++++++++++++++++++++++++++++++++++*........+.+.....+.......=
=2E.+...............+.+......+......+.....+...+.+..................+..+....=
+.........+.....+......+....+.....+.......+.....+...............+....+..+..=
=2E.+...........+...+.+...+...........+....+..+...+................+.....+.=
+...+...+..+...+....+...+..+....+............+..+......+...................=
+......+..+..........+...+.........+..+...+...+....+...+......+.....+.+...+=
=2E.+.........+.+.....+.+..+...+...+............+...+......+.........+.....=
=2E+.+...+......+.....+......+..........+...+.....+........................=
+............+.+.....+.............+..+...+.......+..+.......+...........+.=
=2E.+..........++++++
&gt; -----
&gt; /tmp/autopkgtest.sNDpV8/build.YE7/src/debian/tests/inetd: 31: ss: not fou=
nd
&gt; Waiting for csync2 socket...
&gt; /tmp/autopkgtest.sNDpV8/build.YE7/src/debian/tests/inetd: 31: ss: not fou=
nd
&gt; Waiting for csync2 socket...
&gt; /tmp/autopkgtest.sNDpV8/build.YE7/src/debian/tests/inetd: 31: ss: not fou=
nd
&gt; Waiting for csync2 socket...
&gt; /tmp/autopkgtest.sNDpV8/build.YE7/src/debian/tests/inetd: 31: ss: not fou=
nd
&gt; Waiting for csync2 socket...
&gt; /tmp/autopkgtest.sNDpV8/build.YE7/src/debian/tests/inetd: 31: ss: not fou=
nd
&gt; Waiting for csync2 socket...
&gt; =E2=97=8F inetd.service - Internet superserver
&gt; Loaded: loaded (/usr/lib/systemd/system/inetd.service; enabled; preset: e=
nabled)
&gt; Drop-In: /run/systemd/system/service.d
&gt; =E2=94=94=E2=94=80zzz-lxc-service.conf
&gt; Active: active (running) since Fri 2026-08-14 20:55:37 UTC; 5s ago
&gt; Invocation: 8b0538bfa23843e99d9794a8e2bd4fdb
&gt; Docs: man:inetd(8)
&gt; Main PID: 1678 (inetd)
&gt; Tasks: 1 (limit: 308597)
&gt; Memory: 496K (peak: 1.9M)
&gt; CPU: 5ms
&gt; CGroup: /system.slice/inetd.service
&gt; =E2=94=94=E2=94=801678 /usr/sbin/inetd
&gt;=20
&gt; Aug 14 20:55:37 autopkgtest-incus-inozpc systemd[1]: Starting inetd.servi=
ce - Internet superserver...
&gt; Aug 14 20:55:37 autopkgtest-incus-inozpc systemd[1]: Started inetd.servic=
e - Internet superserver.
&gt; Marking file as dirty: /etc/shells
&gt; Connecting to host 127.0.0.1 (SSL) ...
&gt; Bound to 127.0.0.2:0 as 127.0.0.2.
&gt; Connect to 127.0.0.1:30865 (127.0.0.1).
&gt; Adding peer x509 certificate to db: 30820303308201EBA00302010202141220D2B=
D32617CE2AECC3B8015061B1297495924300D06092A864886F70D01010B05003011310F300D=
06035504030C066373796E6332301E170D3236303831343230353533385A170D32373036313=
03230353533385A3011310F300D06035504030C066373796E633230820122300D06092A8648=
86F70D01010105000382010F003082010A0282010100A6D50E8F2858EC3AC206401640C6D37=
2D832178A8876FD988D973935B7EA9052234FAA74B96F3F71AA9283663D7892378CED8A333F=
F4DFF3B0E6A348A4798585F6D4B4D5859346F155300C416B18BC4836A8EC4BB9A3B1F200502=
7F1B714B408B2532AAF7CB94338EB4D1012DF5B072CEFF067223038CE93E9634B56356EAED6=
F19CF9051C8BFD2B70E93A750BCCD49A94A2D1F5D4CC07793B3835D783D011270D74CBC3973=
AD8E3B8BD0264956E779A9CBB2C1B235AF486258503B08503DC5AEC1C04B1B73D9DADF4CDE2=
4ABDA58656DF6359FA1D0CCEC4FC5B92ADB43836228E58771DE3E6873365222752F68090E9B=
5DE162A1C34A25743A1AB849AAE5AAF0203010001A3533051301D0603551D0E041604141856=
EC8BC4E42338D46764B832B33BBF17FA9A18301F0603551D230418301680141856EC8BC4E42=
338D46764B832B33BBF17FA9A18300F0603551D130101FF040530030101FF300D06092A8648=
86F70D01010B0500038201010059D912822313F6CE6F7A34D74C651442449A0502FD27F8823=
69C959A0FA65B7F7000BBDC8C24FD6FE1F7B778CED86B5E7A1CA8D0841A2D4FADEBCF4CB60A=
4A2F0907C8A97D730470AD6E634D6070115FFBC015759DA9375CBD88F185A33F41BA101E5CD=
D8CC614C60FE575207CBB600290101700CE49A0B0FC4C8AFA68BFB40FCBA867B6B9C8FDE6F2=
955EA9E4D7BE2581D2E4E8DC4A9531C7BAE6E17EE6CB69C56F82BACF7D5D7CD8C3E7D0A8880=
2D52E35F3112BC0924F21A98A56C70DEADBAC0CC028197E2721A5F274F59A0F6621600D31B2=
AC983369FD6578E2371920E410874D5003E080ABE2F6FE5260E057489E337763C70D9CA779F=
88C7D251424CB


The full autokpgtest logs are available at:
https://ci.debian.net/experiments/8/regressions/
(please beware of pagination)

Common types of failure and suggested fixes are being documented at:
https://wiki.debian.org/ContinuousIntegration/LxcToIncus

Note that for the time being, csync2 is still being tested under lxc to
avoid disturbing its testing migration test results.

If you decide to add the `isolation-machine` restriction to get this package
tested under qemu, please mention that explicitly when closing this bug (it=
's
fine to do that only in the package changelog entry that closes the bug) so
that we can configure your package for qemu on ci.debian.net.

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