kern/57127: ptyfs fails

[martin%NetBSD.org@localhost]

>Number:         57127
>Category:       kern
>Synopsis:       ptyfs fails
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 21 16:25:00 +0000 2022
>Originator:     Martin Husemann
>Release:        NetBSD 10.0_BETA
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD thirdstage.duskware.de 10.0_BETA NetBSD 10.0_BETA (MODULAR) #1: Tue Dec 20 11:51:45 CET 2022 martin%thirdstage.duskware.de@localhost:/usr/src/sys/arch/sparc64/compile/MODULAR sparc64
Architecture: sparc64
Machine: sparc64
>Description:

I have seen this symptom on landisk running 9.99.108 and sparc64 running -10,
it must be relatively new (didn't see it during last weeks test runs)

Initially after boot ptyfs works, but sometime later it fails, like:

(on shutdown, seen on the landisk)
wall: ttymsg: Cannot open `/dev/pts/0' (No such file or directory)
wall: ttymsg: Cannot open `/dev/pts/1' (No such file or directory)

or ssh logins failing (seen on the sparc64):

Dec 21 17:18:34 thirdstage sshd[13409]: error: chown /dev/pts/1 0 0 failed: No such file or directory
Dec 21 17:18:34 thirdstage sshd[13409]: error: chmod /dev/pts/1 0666 failed: No such file or directory


>How-To-Repeat:
Use ptyfs for a while?

>Fix:
n/a