Re: Curious shells/nushell issue

[RVP <rvp%SDF.ORG@localhost>]

> As far as I could test it, this happens only with long-listing of /,
> works ok on any other directory.
>

I think it's the birthtime of /kern (also the files inside it) that
nushell is tripping on:

```
$ stat -x /kern
  File: "/kern"
  Size: 512          Blocks: 1            IO Block: 512          Directory
Device: 4095,1048575   Inode: 2    Links: 2
  Mode: (0555/dr-xr-xr-x)         Uid: (    0/    root)  Gid: (    0/   wheel)
Access: 2023-12-28 15:26:36.390093559 +0000
Modify: 2023-12-28 15:26:36.390093559 +0000
Change: 2023-12-28 15:26:36.390093559 +0000
 Birth: 1969-12-31 23:59:59.-000000001 
$
```

You could try this patch as well:

```
diff -urN a/src/sys/miscfs/kernfs/kernfs_vnops.c b/src/sys/miscfs/kernfs/kernfs_vnops.c
--- a/src/sys/miscfs/kernfs/kernfs_vnops.c	2022-03-27 18:10:56.000000000 +0100
+++ b/src/sys/miscfs/kernfs/kernfs_vnops.c	2023-12-28 15:37:57.478425150 +0000
@@ -659,7 +659,7 @@
 	} else {
 		getnanotime(&vap->va_ctime);
 	}
-	vap->va_atime = vap->va_mtime = vap->va_ctime;
+	vap->va_birthtime = vap->va_atime = vap->va_mtime = vap->va_ctime;
 	vap->va_gen = 0;
 	vap->va_flags = 0;
 	vap->va_rdev = 0;
```

-RVP