GNU bug report logs - #76401
ntpd segfaults when started too early

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludovic.courtes <at> inria.fr>
To: bug-guix <at> gnu.org
Subject: ntpd segfaults when started too early
Date: Tue, 18 Feb 2025 19:23:38 +0100

Hi,

I noticed that ntpd segfaults when started “too early”, presumably
before networking is up:

--8<---------------cut here---------------start------------->8---
ludo <at> bayfront ~$ sudo herd status ntpd
● Status of ntpd:
  It is stopped since 07:19:58 PM (110 seconds ago).
  Process terminated with signal 11.
  It is disabled.
  Provides: ntpd
  Requires: user-processes networking
  Custom action: configuration
  Will be respawned.
  Last respawned on 07:19:58 PM (110 seconds ago).
  Latest exits:
    - 2025-02-18 19:19:58  Process terminated with signal 11.
    - 2025-02-18 19:19:58  Process terminated with signal 11.
    - 2025-02-18 19:19:58  Process terminated with signal 11.
    - 2025-02-18 19:19:57  Process terminated with signal 11.
    - 2025-02-18 19:19:57  Process terminated with signal 11.
ludo <at> bayfront ~$ guix system describe
Generation 1210 Feb 18 2025 15:26:24    (current)
  file name: /var/guix/profiles/system-1210-link
  canonical file name: /gnu/store/yqw5xzxl4d3da10dim33p5nxn1gy17i9-system
  label: GNU with Linux-Libre 5.10.234
  bootloader: grub
  root device: /dev/md0
  kernel: /gnu/store/04g6ij7nqmk4mqxrqd9zq31bm8fysslf-linux-libre-5.10.234/bzImage
  channels:
    guix:
      repository URL: https://git.savannah.gnu.org/git/guix.git
      branch: master
      commit: 96fe9adf54772e0824e098a6a089306a75101218
  configuration file: /gnu/store/12d2fsn80fwwsmapp3m3pxbfd3q4pra8-configuration.scm
--8<---------------cut here---------------end--------------->8---

(Seen on several different machines.)

Ludo’.

Message #8 received at 76401 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: 76401 <at> debbugs.gnu.org
Subject: Re: bug#76401: ntpd segfaults when started too early
Date: Tue, 18 Feb 2025 23:18:21 +0100

Ludovic Courtès <ludovic.courtes <at> inria.fr> skribis:

>   Latest exits:
>     - 2025-02-18 19:19:58  Process terminated with signal 11.
>     - 2025-02-18 19:19:58  Process terminated with signal 11.
>     - 2025-02-18 19:19:58  Process terminated with signal 11.
>     - 2025-02-18 19:19:57  Process terminated with signal 11.
>     - 2025-02-18 19:19:57  Process terminated with signal 11.

The /var/log/ntpd.log excerpt corresponding to one of these:

--8<---------------cut here---------------start------------->8---
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: ntpd 4.2.8p18 <at> 1.4062-o Thu Jan  1 00:00:01 UTC 1970 (1): Starting
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Command line: /gnu/store/hzsra0k8jcz4473c6clh5m5xfq29s0a0-ntp-4.2.8p18/bin/ntpd -n -c /gnu/store/7ac2i2c6dp2f9006llg3m5vkrna7pjbf-ntpd.conf -u ntpd -g
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: ----------------------------------------------------
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: ntp-4 is maintained by Network Time Foundation,
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Inc. (NTF), a non-profit 501(c)(3) public-benefit
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: corporation.  Support and training for ntp-4 are
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: available at https://www.nwtime.org/support
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: ----------------------------------------------------
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: DEBUG behavior is enabled - a violation of any diagnostic assertion will cause ntpd to abort
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: proto: precision = 0.285 usec (-22)
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: baseday_set_day: invalid day (25556), UNIX epoch substituted
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: basedate set to 1970-01-01
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: gps base set to 1980-01-06 (week 0)
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Listen and drop on 0 v6wildcard [::]:123
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Listen and drop on 1 v4wildcard 0.0.0.0:123
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Listen normally on 2 lo 127.0.0.1:123
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Listen normally on 3 ens9 185.233.100.57:123
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Listen normally on 4 ens10 185.233.100.56:123
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: Listen normally on 5 lo [::1]:123
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: bind(22) AF_INET6 [fe80::22cf:30ff:fe50:29fe%2]:123 flags 0x811 failed: Cannot assign requested address
2025-02-18 19:19:58 18 Feb 19:19:58 ntpd[1074]: unable to create socket on ens9 (6) for [fe80::22cf:30ff:fe50:29fe%2]:123
--8<---------------cut here---------------end--------------->8---

Ludo’.

Message #13 received at 76401-done <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Ian Eure <ian <at> retrospec.tv>
Cc: Jakob Kirsch <jakob.kirsch <at> web.de>, 76401-done <at> debbugs.gnu.org,
 76892-done <at> debbugs.gnu.org, Leo Famulari <leo <at> famulari.name>
Subject: Re: bug#76892: [PATCH v1] gnu: ntp: Fix crash.
Date: Wed, 19 Mar 2025 11:24:33 +0100

Ian Eure <ian <at> retrospec.tv> skribis:

> Here’s the upstream bug(s): https://bugs.ntp.org/show_bug.cgi?id=3928
> https://bugs.ntp.org/show_bug.cgi?id=3968
>
> I think this patch is fine, we might also consider rolling back to
> 4.2.8p17.

Applied, with a reference to <https://issues.guix.gnu.org/76401> too.

Thanks,
Ludo'.

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