Comment # 21 on bug 904097 from Stakanov Schufter

O.K. Sorry for the slow reply. 
I tested this now, the current status is O.K. with 
3.16.6-2-desktop #1 SMP PREEMPT Mon Oct 20 13:47:22 UTC 2014 (feb42ea) x86_64
x86_64 x86_64 GNU/Linux
and your fixes applied. If you change lightning fast a lot of time between the
VTs it is still possible to crash it. But during normal operation (e.g. change
VT, check mail, change back to other VT, this works stable AFAIK. 

If you wish I can try to give you the output of a blackscreen but it is now
very artificial (jumping 10 times in less then 30 seconds from VT to VT). I do
not think that this is normal operation. So in normal use conditions it is not
happening with the latest fix.