If you get this error during the Vmware module compilation:
Unable to make a vsock module that can be loaded in the running kernel:
insmod: error inserting ‘/tmp/vmware-config1/vsock.o’: -1 Unknown symbol in module
What you need to do is the following:
untar vmci.tar (in /usr/lib/vmware/modules/source)
build the module with ‘make’
untar vsock.tar and copy the “Modules.symvers” file resulting from the previous [...]

