Steps to reproduce:
1. Install Steam under Wine
2. Launch Dota 2
3. Start Bot match. Lock in a hero.
Expected Results:
Game starts

Actual Results:
Dota 2 will freeze with the following error in the Wine terminal:
err:seh:setup_exception_record stack overflow 2160 bytes in thread 008b eip
7bc5e05a esp 47cb0ac0 stack 0x47cb0000-0x47cb1000-0x47db0000

tested with:
wine-1.7.24
OpenGL version string: 3.0 Mesa 10.4.0-devel (git-83503f9 2014-08-25
trusty-oibaf-ppa+gallium-nine)

Note if I reboot with the Nvidia proprietary drivers, Dota 2 runs flawlessly
under Wine. Dota 2 also works under Wine with AMD catalyst drivers.