Issue with vboxconfig and "linux_bool" type

[yann-ilas]

The command vboxconfig finishes in error :

vboxdrv.sh: Stopping VirtualBox services.
vboxdrv.sh: Starting VirtualBox services.
vboxdrv.sh: Building VirtualBox kernel modules.
vboxdrv.sh: failed: Look at /var/log/vbox-setup.log to find out what went wrong.

There were problems setting up VirtualBox.  To re-start the set-up process, run
  /sbin/vboxconfig
as root.  If your system is using EFI Secure Boot you may need to sign the
kernel modules (vboxdrv, vboxnetflt, vboxnetadp, vboxpci) before you can load
them. Please see your Linux system's documentation for more information.

Linux version :

$ lsb_release -a                          
LSB Version:	:core-4.1-amd64:core-4.1-noarch
Distributor ID:	Fedora
Description:	Fedora release 33 (Thirty Three)
Release:	33
Codename:	ThirtyThree

Kernel :

$ uname -a
Linux localhost.localdomain 5.11.14-200.fc33.x86_64 #1 SMP Wed Apr 14 15:25:53 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

The error seems to come from the type linux_bool which is not defined (more details in attachment)

   38 | #define bool linux_bool
/tmp/vbox.0/r0drv/linux/the-linux-kernel.h:38:14: error: unknown type name ??linux_bool??

[yann-ilas]

Log generated by vboxconfig (/var/log/vbox-setup.log)

[klaus]

This is due to using Linux 5.11 which isn't supported with VirtualBox 6.1.18. Please use 6.1.20 which has been just released. BTW, there is now also a Fedora 33 RPM package now.

[klaus]

And there is now also a repository containing the Fedora 33 package, in the usual place. See the repo setup instructions at the bottom of Linux_Downloads.

[yann-ilas]

Thank you. I installed that version and everything is OK.