bin/58412: ssh update breaks sshd

[martin%NetBSD.org@localhost]

>Number:         58412
>Category:       bin
>Synopsis:       ssh update breaks sshd
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 10 09:45:00 +0000 2024
>Originator:     Martin Husemann
>Release:        NetBSD 10.99.11
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD out-of-the-silent-planet.aprisoft.de 10.99.11 NetBSD 10.99.11 (GENERIC64) #451: Wed Jul 10 10:14:12 CEST 2024 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/compile/GENERIC64 evbarm
Architecture: aarch64
Machine: evbarm
>Description:

After updating this machine to -current I couldn't log in via ssh any more:

sshd-session[1709]: fatal: sshpam_init: internal error: NULL PAM service name

My /etc/pamd.d is identical to the distributed version.

>How-To-Repeat:

Update a working machine to current, try to log in via ssh.

Setting UsePAM=no in /etc/ssh/sshd_config and restarting sshd works around it.

>Fix:
n/a