[Bug 105251] [Vega10] GPU lockup on boot: VMC page fault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105251

--- Comment #78 from deltasquared <ds2.bugs.freedesktop at gmail.com> ---
Created attachment 144846
  --> https://bugs.freedesktop.org/attachment.cgi?id=144846&action=edit
vega_crasher after patch, colour shaded central output, on ryzen 2200G with
vega 8 graphics

Screenshot 2/2 of vega_crasher after patch. It seems to indeterministically
switch between shaded and black central regions - I can only assume this is
down to whether or not the offending index ends up out of bounds?

If it helps I can attempt more tests with an asserts-enabled build, though that
will take some more time, a resource I am out of for today. (Will have to look
at how to do that also - just a question of a debug build or another flag that
needs passing?)

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