UPDATE:

After more tests, I found a solution..

Rather than ‘update’ from 12.0.0 to 12.0.1, you have to deinstall 12.0.0 first:

# vmware-installer --uninstall-product vmware-workstation

– remembering to answer ‘yes‘ to the ”Do you wish to keep your configuration files?” message.

Then install 12.0.1 as a new install..

# ~/VMware-Workstation-Full-12.0.1-3160714.x86_64.bundle

Now everything seems to be working OK, again..

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The Problem:
As soon as I tried to resize the (win7) guest to fullscreen, windows froze, and then flashed an error message in a small blue box in a black screen, and then slowly displayed the fullscreen window.   When I tried to run Photoshop, it kept freezing, and then I actually got the famous blue screen of death with a ‘page fault’ error..     I have tried this on two different x86_64 systems, with similar results..

So…  I am uninstalling VMware 12.0.1

vmware-installer --uninstall-product vmware-workstation

– and (re)installing 12.0.0, for the time being !

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VMware 12.0.1 has just been released, and I have tested this with Kernel 4.3 (4.3-rc6) and it compiles/loads/runs OK- at first.  There is no need for the vmmon ‘patch’ any more..

Release notes are here:  https://pubs.vmware.com/Release_Notes/en/workstation/12pro/workstation-1201-release-notes.html     No specific mention is made of Kernel 4.3 compatibility..

This is good timing, as Kernel 4.3 ‘Final’ is due to be released soon..

Robert Gadsdon.   October 30, 2015.