Ubuntu 16.04 and Nvidia Ttan Black proprietary driver 384.111
Broken: official 2.79 and 7b3e441
Short description of error
In particle edit mode, you can add or remove weights to hair paths.
You have to enable weight brush for that.
But you can not do it for emitter particles.
So, if you enter into particle mode of a particle system to change weight on hair and quit it with weight brush enabled.
When you will enter particle edit mode of a baked emitter particle system, Blender crashes.
Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps
In attached .blend file, select Cube with hair.
Enter into Particle Edit mode.
Select Weight Brush.
Quit to Object mode.
Select plane with baked cache of emitter particles.
Enter into Particle Edit mode -> crash