Bug#1119148: libnss-systemd: double entries in nsswitch.conf

[Christoph Anton Mitterer]

Hey Gioele:

On Tue, 2025-10-28 at 11:17 +0100, Gioele Barabucci wrote:
> it looks like you are running Debian unstable. When did you first 
> install this system?

Phew... I think it was either during woody or sarge ... but could as
well have been during slink O:-)
So it basically run the whole history from since the sysvinit switch
over to systemd until now :-D ... and I think I'll have had most if not
all systemd versions installed that ever entered sid.


> Also, could you please provide the output of
> 
>      { cat /var/log/dpkg.log{,.1}; zcat /var/log/dpkg.log.*.gz; } |
>      grep 'status installed systemd:' | sort

That's not going back very long ;-)

{ cat /var/log/dpkg.log{,.1}; zcat /var/log/dpkg.log.*.xz; } | grep 'status installed systemd:' | sort
2024-10-01 17:04:46 status installed systemd:amd64 256.6-1
2024-10-04 04:00:31 status installed systemd:amd64 256.6-1
2024-10-05 13:13:18 status installed systemd:amd64 256.6-1
2024-10-09 02:30:55 status installed systemd:amd64 256.7-1
2024-10-16 05:15:42 status installed systemd:amd64 256.7-1
2024-10-18 23:14:18 status installed systemd:amd64 256.7-2
2024-10-25 02:05:34 status installed systemd:amd64 256.7-2
2024-10-25 23:23:05 status installed systemd:amd64 256.7-2
2024-10-28 22:49:13 status installed systemd:amd64 256.7-2
2024-11-01 22:38:09 status installed systemd:amd64 256.7-3
2024-11-03 15:32:40 status installed systemd:amd64 256.7-3
2024-11-05 19:34:57 status installed systemd:amd64 256.7-3
2024-11-07 19:04:24 status installed systemd:amd64 257~rc1-3
2024-11-08 21:02:51 status installed systemd:amd64 257~rc1-4
2024-11-09 05:26:20 status installed systemd:amd64 257~rc1-4
2024-11-11 21:39:51 status installed systemd:amd64 257~rc1-4
2024-11-12 14:50:40 status installed systemd:amd64 257~rc1-4
2024-11-13 16:26:13 status installed systemd:amd64 257~rc1-4
2024-11-15 16:27:14 status installed systemd:amd64 257~rc1-4
2024-11-17 02:19:10 status installed systemd:amd64 257~rc2-3
2024-11-23 21:56:50 status installed systemd:amd64 257~rc2-3
2024-11-27 05:21:28 status installed systemd:amd64 257~rc2-3
2024-11-28 10:40:28 status installed systemd:amd64 257~rc3-1
2024-12-02 18:35:53 status installed systemd:amd64 257~rc3-1
2024-12-04 23:13:02 status installed systemd:amd64 257~rc3-1
2024-12-05 22:34:26 status installed systemd:amd64 257~rc3-1
2024-12-11 04:17:08 status installed systemd:amd64 257-1
2024-12-11 23:52:17 status installed systemd:amd64 257-2
2024-12-12 22:53:12 status installed systemd:amd64 257-2
2024-12-14 00:34:22 status installed systemd:amd64 257-2
2024-12-14 18:07:37 status installed systemd:amd64 257-2
2024-12-19 00:30:07 status installed systemd:amd64 257-2
2024-12-20 23:09:06 status installed systemd:amd64 257.1-2
2024-12-21 17:40:12 status installed systemd:amd64 257.1-3
2024-12-22 22:33:09 status installed systemd:amd64 257.1-4
2024-12-24 23:46:50 status installed systemd:amd64 257.1-4
2024-12-26 22:12:05 status installed systemd:amd64 257.1-5
2024-12-30 05:15:16 status installed systemd:amd64 257.1-5
2024-12-30 21:43:54 status installed systemd:amd64 257.1-5
2025-01-01 21:00:32 status installed systemd:amd64 257.1-5
2025-01-03 16:53:30 status installed systemd:amd64 257.1-6
2025-01-03 23:02:42 status installed systemd:amd64 257.1-6
2025-01-04 17:25:07 status installed systemd:amd64 257.1-7
2025-01-05 16:09:50 status installed systemd:amd64 257.1-7
2025-01-08 17:36:47 status installed systemd:amd64 257.1-7
2025-01-09 23:36:39 status installed systemd:amd64 257.2-1
2025-01-09 23:39:23 status installed systemd:amd64 257.2-1
2025-01-11 22:53:09 status installed systemd:amd64 257.2-1
2025-01-12 19:56:11 status installed systemd:amd64 257.2-1
2025-01-16 23:37:41 status installed systemd:amd64 257.2-1
2025-01-17 19:18:38 status installed systemd:amd64 257.2-2
2025-01-23 04:45:59 status installed systemd:amd64 257.2-2
2025-01-24 04:38:01 status installed systemd:amd64 257.2-3
2025-01-29 11:02:14 status installed systemd:amd64 257.2-3
2025-02-02 10:33:31 status installed systemd:amd64 257.2-3
2025-02-05 12:24:56 status installed systemd:amd64 257.2-3
2025-02-05 22:14:16 status installed systemd:amd64 257.2-3
2025-02-14 05:23:26 status installed systemd:amd64 257.3-1
2025-02-15 22:34:36 status installed systemd:amd64 257.3-1
2025-02-17 20:27:08 status installed systemd:amd64 257.3-1
2025-02-25 21:59:06 status installed systemd:amd64 257.3-1
2025-03-01 05:31:39 status installed systemd:amd64 257.3-1
2025-03-01 22:24:05 status installed systemd:amd64 257.3-1
2025-03-06 05:07:39 status installed systemd:amd64 257.3-1
2025-03-06 23:07:09 status installed systemd:amd64 257.4-1
2025-03-09 21:12:10 status installed systemd:amd64 257.4-1
2025-03-10 22:50:40 status installed systemd:amd64 257.4-1
2025-03-13 18:54:54 status installed systemd:amd64 257.4-2
2025-03-13 23:51:38 status installed systemd:amd64 257.4-3
2025-03-15 02:58:47 status installed systemd:amd64 257.4-3
2025-03-15 04:53:00 status installed systemd:amd64 257.4-3
2025-03-15 16:53:37 status installed systemd:amd64 257.4-3
2025-03-27 04:59:11 status installed systemd:amd64 257.4-3
2025-03-29 02:22:28 status installed systemd:amd64 257.4-5
2025-03-29 16:22:04 status installed systemd:amd64 257.4-6
2025-03-30 03:32:10 status installed systemd:amd64 257.4-6
2025-03-30 06:48:15 status installed systemd:amd64 257.4-7
2025-04-02 18:42:51 status installed systemd:amd64 257.4-9
2025-04-05 18:56:51 status installed systemd:amd64 257.4-9
2025-04-07 13:05:37 status installed systemd:amd64 257.5-1
2025-04-08 01:19:50 status installed systemd:amd64 257.5-1
2025-04-08 15:02:21 status installed systemd:amd64 257.5-2
2025-04-09 23:03:11 status installed systemd:amd64 257.5-2
2025-04-12 05:09:47 status installed systemd:amd64 257.5-2
2025-04-13 23:51:11 status installed systemd:amd64 257.5-2
2025-04-14 20:17:37 status installed systemd:amd64 257.5-2
2025-04-25 01:01:30 status installed systemd:amd64 257.5-2
2025-05-15 01:56:52 status installed systemd:amd64 257.5-2
2025-05-17 22:41:49 status installed systemd:amd64 257.5-2
2025-05-20 18:26:13 status installed systemd:amd64 257.5-2
2025-05-21 18:06:08 status installed systemd:amd64 257.5-2
2025-05-29 22:44:11 status installed systemd:amd64 257.5-2
2025-05-30 04:51:04 status installed systemd:amd64 257.6-1
2025-06-04 04:44:17 status installed systemd:amd64 257.6-1
2025-06-08 22:39:52 status installed systemd:amd64 257.6-1
2025-06-12 23:30:26 status installed systemd:amd64 257.6-1
2025-06-15 16:11:03 status installed systemd:amd64 257.6-1
2025-06-18 14:27:25 status installed systemd:amd64 257.6-1
2025-06-25 22:44:56 status installed systemd:amd64 257.7-1
2025-06-26 10:48:20 status installed systemd:amd64 257.7-1
2025-07-17 23:59:03 status installed systemd:amd64 257.7-1
2025-07-25 16:58:21 status installed systemd:amd64 257.7-1
2025-07-27 06:32:54 status installed systemd:amd64 257.7-1
2025-07-31 05:35:34 status installed systemd:amd64 257.7-1
2025-08-05 22:52:38 status installed systemd:amd64 257.7-1
2025-08-10 14:20:14 status installed systemd:amd64 257.7-1
2025-08-11 01:50:55 status installed systemd:amd64 257.7-1
2025-08-12 03:42:46 status installed systemd:amd64 257.7-1
2025-08-13 06:59:54 status installed systemd:amd64 258~rc2-2
2025-08-15 04:23:52 status installed systemd:amd64 258~rc2-2
2025-08-20 23:51:16 status installed systemd:amd64 258~rc3-1
2025-08-21 20:49:56 status installed systemd:amd64 258~rc3-1
2025-08-22 01:32:59 status installed systemd:amd64 258~rc3-1
2025-08-28 00:39:08 status installed systemd:amd64 258~rc3-1
2025-08-28 15:22:42 status installed systemd:amd64 258~rc3-1
2025-09-01 14:59:51 status installed systemd:amd64 258~rc3-1
2025-09-05 18:59:15 status installed systemd:amd64 258~rc4-1
2025-09-11 17:47:12 status installed systemd:amd64 258~rc4-1
2025-09-12 05:00:24 status installed systemd:amd64 258~rc4-1
2025-09-13 22:16:58 status installed systemd:amd64 258~rc4-1
2025-09-14 06:40:16 status installed systemd:amd64 258~rc4-1
2025-09-18 00:37:57 status installed systemd:amd64 258-1
2025-09-29 19:29:59 status installed systemd:amd64 258-1
2025-10-09 23:18:41 status installed systemd:amd64 258-1
2025-10-14 22:30:17 status installed systemd:amd64 258.1-1
2025-10-16 23:56:28 status installed systemd:amd64 258.1-1
2025-10-21 17:20:58 status installed systemd:amd64 258.1-1
2025-10-27 16:10:13 status installed systemd:amd64 258.1-2
2025-10-28 23:40:52 status installed systemd:amd64 258.1-2


> and of
> 
>      stat /etc/nsswitch.conf
> 
# stat /etc/nsswitch.conf
  File: /etc/nsswitch.conf
  Size: 551       	Blocks: 8          IO Block: 4096   regular
file
Device: 0,29	Inode: 95569774    Links: 1
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/   
root)
Access: 2025-10-27 22:40:32.699426650 +0100
Modify: 2025-10-27 22:40:32.699426650 +0100
Change: 2025-10-27 22:40:32.707426621 +0100
 Birth: 2025-10-27 22:40:32.699426650 +0100

But that doesn't really help anymore, since I've fixed the entries
right after I've had sent the bug report.


I guess what this bug is probably mainly about is:

It can (or could have happened) that entries get doubled, and maybe
this needs generally be taken care of (at least fixing old files that
got earlier "corrupted").

Thanks,
Chris.