Your message dated Sat, 04 Jul 2026 10:32:24 +0000
with message-id <[email protected]>
and subject line Bug#1011533: fixed in chrony 4.3-2+deb12u3
has caused the Debian Bug report #1011533,
regarding chrony: if-up.d hook fails at boot when chronyd is still
initializing, breaks networking.service
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
1011533: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011533
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: chrony
Version: 4.6.1-3+deb13u1
Severity: normal
The /etc/network/if-up.d/chrony hook can fail at boot when it runs
in the brief window between chronyd forking (creating
/run/chrony/chronyd.pid) and chronyd finishing initialization (opening
its command socket). In that window, `chronyc onoffline` returns
non-zero, `set -e` aborts the script before reaching `exit 0`, and
because ifup invokes if-up.d via `run-parts --exit-on-error`, the
whole ifup call fails. networking.service exits with status 1, the
interface is not registered in /run/network/ifstate, and no dhclient
daemon remains to handle DHCP renewals.
Current script (/etc/network/if-up.d/chrony):
#!/bin/sh
set -e
[ -x /usr/sbin/chronyd ] || exit 0
if [ -e /run/chrony/chronyd.pid ]; then
chronyc onoffline > /dev/null 2>&1
fi
exit 0
The pid file exists during chronyd startup, so the guard does not
prevent the race. The `> /dev/null 2>&1` only suppresses output, not
the exit status, and `set -e` aborts on non-zero exits inside an
`if` body (only the condition itself is exempt).
This is a narrower variant of #868491 (fixed in 3.0-4+deb9u1 by
removing the chronyc `burst` call). The remaining `chronyc onoffline`
call has the same failure mode whenever chronyd is mid-startup.
Reproduction: intermittent race, occurred once in ~6 boots on a
Debian 13 (trixie) VMware VM (vmxnet3, chrony 4.6.1-3+deb13u1).
chrony.service and networking.service both start during basic.target,
and on the failing boot chronyd finished initialization ~7ms after
the if-up.d hook ran.
Relevant boot journal excerpt (timestamps abbreviated, May 14 01:50:48):
.352 systemd: Starting chrony.service
.449 dhclient: DHCPACK of 172.18.0.23
.519 chronyd: chronyd version 4.6.1 starting
.542 chronyd: Frequency read from /var/lib/chrony/chrony.drift
.546 ifup[782]: run-parts: /etc/network/if-up.d/chrony exited with
return code 1
.547 ifup[623]: ifup: failed to bring up eth0
.553 systemd: Started chrony.service <- chronyd ready 7ms too late
.639 systemd: networking.service: Main process exited, status=1/FAILURE
.702 systemd: Failed to start networking.service - Raise network interfaces.
Suggested fix: make the chronyc call non-fatal. chronyd's built-in
netlink monitoring picks up the route change shortly after anyway,
so the hook's nudge is best-effort.
--- /etc/network/if-up.d/chrony.orig
+++ /etc/network/if-up.d/chrony
@@ -4,7 +4,7 @@
[ -x /usr/sbin/chronyd ] || exit 0
if [ -e /run/chrony/chronyd.pid ]; then
- chronyc onoffline > /dev/null 2>&1
+ chronyc onoffline > /dev/null 2>&1 || true
fi
exit 0
-- System Information:
Debian Release: 13 (trixie)
Architecture: amd64 (x86_64)
Kernel: Linux 6.12.86+deb13-cloud-amd64 #1 SMP PREEMPT_DYNAMIC Debian
6.12.86-1 (2026-05-08)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Versions of packages chrony depends on:
ii chrony 4.6.1-3+deb13u1
--- End Message ---
--- Begin Message ---
Source: chrony
Source-Version: 4.3-2+deb12u3
Done: Vincent Blut <[email protected]>
We believe that the bug you reported is fixed in the latest version of
chrony, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Vincent Blut <[email protected]> (supplier of updated chrony package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Thu, 02 Jul 2026 15:56:53 +0200
Source: chrony
Architecture: source
Version: 4.3-2+deb12u3
Distribution: bookworm
Urgency: medium
Maintainer: Vincent Blut <[email protected]>
Changed-By: Vincent Blut <[email protected]>
Closes: 1011533
Changes:
chrony (4.3-2+deb12u3) bookworm; urgency=medium
.
* debian/chrony.if-{post-down,up}:
- Adjust the if-up and if-down hook scripts so that they always exit
successfully. (Closes: #1011533)
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