In Google Chrome, navigate to:

https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/conformance/textures/texture-size-limit.html

On my on my GTX 650, this causes the desktop to lock-up with the Nouveau
drivers, but passes with the Nvidia proprietary driver. 

dmesg failure output:
[ 4183.336016] nouveau W[     DRM] skipped size 80010000
...
[ 4183.589907] nouveau W[     DRM] skipped size 80010000
[ 4183.740567] nouveau E[   PFIFO][0000:03:00.0] write fault at 0x002cfcb000
[PDE] from CE2/GR_CE on channel 0x007f61d000 [unknown]

Tested on Ubuntu 14.04 with default mesa and Ubuntu 15.10 with edgers(Mesa
11.0)