[Bug 91926] [SKL bisected] texsubimage pbo intermittent failures

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91926

--- Comment #60 from Ben Widawsky <ben at bwidawsk.net> ---
(In reply to Topi Pohjolainen from comment #58)
> (In reply to Topi Pohjolainen from comment #57)
> > Decreasing the texture and buffer size into one fourth of the original, into
> > 64x32, seems to give me 100% probability of reproducing on IVB with the
> > simplified test case. I'll try with the original and SKL.
> 
> More on IVB first. Using 32 x 16 x 4 = 2048 looks to be too small to
> reproduce. On the other hand 32 x 32 x 4 = 4096 looks to give 100%
> probability. The latter has the buffer end at the page boundary suggesting
> that buffer overrun due to alignment plays some role afterall (perhaps just
> something more complex than discussed before).

Just for grins, how about 32 x 16 x 8?

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