Re: specfs/spec_vnops.c diagnostic assertion panic

[Taylor R Campbell <campbell+netbsd-current-users%mumble.net@localhost>]

> Date: Fri, 12 Aug 2022 23:28:13 +0700
> From: Robert Elz <kre%munnari.OZ.AU@localhost>
> 
> I think I am going to try backing out the patch, and just run with your
> (Taylor's) updated specfs_vnops.c in case there is something in the patch
> which is altering the behaviour (more than just the nature of the sd_closing
> field type).

This is extremely unlikely.  You might try removing the assertion that
it tripped on, KASSERT(!sd->sd_opened), so that it has the opportunity
to trip on the new assertion with more diagnostic information in it
instead.