kern/56285: audio(4): NetBSD/amd64 9.99.85: using audioctl(1) during playback locks-up system.

[rvp%SDF.ORG@localhost]

>Number:         56285
>Category:       kern
>Synopsis:       audio(4): NetBSD/amd64 9.99.85: using audioctl(1) during playback locks-up system.
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 29 22:15:00 +0000 2021
>Originator:     RVP
>Release:        NetBSD/amd64 9.99.85 (GENERIC)
>Organization:
>Environment:
NetBSD x202e.localdomain 9.99.85 NetBSD 9.99.85 (GENERIC) #0: Mon Jun 28 17:52:13 UTC 2021  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
Repeatedly changing `play.gain' using audioctl(1) while audio is playing locks-up the system.
>How-To-Repeat:
$ mpv file.webm

On a different terminal:

$ audioctl -w play.gain=nnn

This might or might work the first time, but will soon lock-up the system.
>Fix: