launching an existing VM or installing extpack does not work in 4.3.20 on linux if /opt is a symlink

[yury_t]

I have /opt as a symlink to the dir on non-root partition. I have installed 4.3.20 (replacing the 4.1.*, I think) on Slackware linux amd64 host using the alternative installer (which always installs to /opt).

Now, when trying to launch an existing VM (it worked in previous series for years) I get the following:

Failed to open a session for the virtual machine ww. Failed to load VMMR0.r0 (VERR_SUPLIB_SYMLINKS_ARE_NOT_PERMITTED).

Result Code: NS_ERROR_FAILURE (0x80004005) Component: Console Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}

*

When trying to install an extension pack I get the following

The installer failed with exit code 1: VBoxExtPackHelperApp: error: argv[0] does not match the executable image path: '/opt/VirtualBox/VBoxExtPackHelperApp' != '/d/p/VirtualBox/VBoxExtPackHelperApp'.

Result Code: NS_ERROR_FAILURE (0x80004005) Component: ExtPackManager Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

[Frank Mehnert]

Duplicate of #9133. There is currently no change planned.