which I think was your V4 posting (or earlier) (the last patch is something I added to toggle it off/on to test).
You have to allocate like a million of gem object to trigger it.
Which I certainly did not, but I did find an accounting error in the rebased v5 version of the TTM DMA that might be the culprit. Will build a kernel shortly with those changes and see how it fares.
The latest (V5) hit the OOM quite fast - took about an hour or two of me answering emails (mutt inside gnome-terminal) and using both chrome and firefox, and running a make -j10 on the Linux kernel.
Time to turn on more debugging :-)
Hhhhmm weird i did not run into that. will try to run heavy make with graphic along side. Does it happen without 0014-drm-ttm-simplify-memory-accounting-for-ttm-user.patch ?
Will try reverting it out and see what happends.