Re: kern/55333 (KASSERT "vrefcnt(vp) > 0")

[Andrew Doran <ad%netbsd.org@localhost>]

The following reply was made to PR kern/55333; it has been noted by GNATS.

From: Andrew Doran <ad%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/55333 (KASSERT "vrefcnt(vp) > 0")
Date: Thu, 11 Jun 2020 20:34:08 +0000

 There are two bugs here by the looks of it and they're both a bit absurd:
 
 - When the tmpfs is mounted, mp->mnt_vnodecovered gets set = rootvnode,
   which is perfect, except that it's set on the actual root file system and
   not the newly mounted fs.
 
 - vp is NULL and there was no fault taken when it was dereferenced.