bin/54637: missing PX field in iso images?

[martin%NetBSD.org@localhost]

>Number:         54637
>Category:       bin
>Synopsis:       missing PX field in iso images?
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 22 09:25:00 +0000 2019
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.17
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD seven-days-to-the-wolves.aprisoft.de 9.99.17 NetBSD 9.99.17 (XEN3_DOM0) #5: Wed Oct 16 10:09:27 CEST 2019 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/amd64/compile/XEN3_DOM0 amd64
Architecture: x86_64
Machine: amd64
>Description:

The ISO images created by "build.sh release iso-image" seem to have
defects (or our cd9660 file system code is broken). When booting the
9.0 BETA amd64 or i386 ISO images from the auto build cluster on a
XEN domU I get:

[   6.0012342] dump device (default xbd1b): 
[   6.7713767] file system (default generic): 
[   7.2213060]  dumps on xbd1b
[   7.2213060] root file system type: cd9660
[   7.2213060] RRIP without PX field?
[   7.2213060] kern.module.path=/stand/i386pae-xen/9.0/modules
[   7.2261000] init path (default /sbin/init): 

The warning comes from cd9660_rrip_defattr() with a comment
	/* But this is a required field! */

>How-To-Repeat:
s/a

>Fix:
n/a