Rendering shader in WebGL causes various system issues

[0152la]

[Shaders, screenshots, error log, reproduction steps, etc.] [ZIP]

Rendering the fragment shader in Chrome or Firefox using our clients leads to various system stability issues. In order of severity:

• system freezes for a few seconds, then reports the GPU driver not being able to recover
• system freezes for anywhere between a few seconds to 3 minutes, after which the user is logged out; upon relogging, the system appears stable
• system freezes indefinitely, until a manual reboot is performed

The freeze seems to be a X server freeze, rather than a full system freeze. However, the machine is inoperable, as the ttys cannot be accessed. However, the machine can be ssh'd into from another machine. The X server is seen to completely fill one of the 16 cores with work. Killing the browser does not affect the X server hanging.

Recipient:

[0152la]

Reported:

https://devtalk.nvidia.com/default/topic/988339/opengl/-bug-webgl-rendering-shader-in-webgl-causes-various-ubuntu-system-issues/

[0152la]

Checked in driver version 381.22, leads to a brief browser hang (~10 seconds). Does not affect the rest of the system.