[Intel-gfx] [i-g-t] dumb_buffer at clear_create triggers OOM since 0b0eaa353

[Chris Wilson]

Quoting Li Zhijian (2020-04-23 10:38:38)
> Hi guys
> 
> 0Day noticed that dumb_buffer at clear_create triggers OOM  since commit: 
> 0b0eaa353 ("tests/dumb_buffer: Try to compute the largest possible dumb 
> buffer")

So VM_FAULT_OOM -> pagefault_out_of_memory()

But a failed allocation for 2G out of 48G, which zone did we try and
fail? Which driver should tell us which allocation path failed.
-Chris