OpenIndiana VirtualBox guest kernel module failed to attach

[hostscape]

I've tried to install the Guest Additions for OpenIndiana Hipster 2002.10 under a Windows 11 Host / VirtualBox 7.04 and get:

# pkgadd -G -d ./VBoxSolarisAdditions.pkg

...
Installing Oracle VM VirtualBox Guest Additions as <SUNWvboxguest>
...
Uncompressing files...
Configuring VirtualBox guest kernel module...
("pci80ee,cafe") already in use as a driver or alias.
VirtualBox guest kernel module failed to attach.
Driver (vboxms) is already installed.
VirtualBox pointer integration module failed to attach.
devfsadm: driver failed to attach: vboxguest
Creating links...
As of X Org Server 1.19, the VirtualBox graphics driver (vboxvideo) is part
of Solaris. Please install it from the package repository if necessary.
Configuring client...
Installing 64-bit shared folders module...
Installing 32-bit shared folders module...
devfsadm: driver failed to attach: vboxguest
Configuring services (this might take a while)...
Enabling services...
svcadm Instance "svc...vboxservice default" is in maintenance state.
svcadm Instance "svc...vboxmslnk default" is in maintenance state.
Updating boot archive...
Done.
Please re-login to activate the X11 guest additions.
If you have just un-installed the previous guest additions a REBOOT is required.
Installation of <SUNWvboxguest> was successful.

The installation of the Guest Additions for an Oracle Solaris 11.3 on the same machine / VBox version works fine.

[paulson]

This issue is described in the following thread on the openindiana-discuss@… mailing list:

VirtualBox Client Extensions Broken ​https://www.mail-archive.com/openindiana-discuss@openindiana.org/msg26504.html

OpenIndiana / Illumos changed the names of some kernel thread-related routines which VirtualBox references as described here:

​https://www.illumos.org/issues/13917

The resolution is also described in the above issue as being located at:

​https://github.com/omniosorg/omnios-extra/pull/921

which made it into the OpenIndiana VirtualBox Guest Additions package:

system/virtualbox/virtualbox-additions

So the fix for your issue is to install the VirtualBox Guest Additions from the OpenIndiana pkg repo rather than the downloaded version from virtualbox.org.