https://bugs.freedesktop.org/show_bug.cgi?id=102276

--- Comment #8 from Mathieu Belanger b747xx@gmail.com --- (In reply to Michel Dänzer from comment #7)

(In reply to Mathieu Belanger from comment #6)

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I might have the same bug

I does not append with Mesa git from mid august but a version from beginning of September do it.

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Kernel 4.12

If that means amd-staging-4.12, you're probably running into bug 102500.

Yes, I did fix the one I wrote by switching the 4.13-rc5 (amd-staging-next, I think)

Now I might have got similar to OP, "randomly" crash and the mouse was still alive. After about 5 minutes X suicided and I was able to get the message log and I saw a ton of:

[drm:amdgpu_gem_object_create [amdgpu]] *ERROR* Failed to allocate GEM object (131072, 6, 131072, -12)

That bug was also not present with 4.12/mid august mesa.