https://bugs.winehq.org/show_bug.cgi?id=54833
--- Comment #7 from Rafał Mużyło galtgendo@o2.pl ---
0120:err:d3d:wined3d_debug_callback 0124E308: "GL_OUT_OF_MEMORY error generated. Failed to allocate CPU address space mapping for buffer object (consider building 64-bit app).".
That's one of the nasty ones - some apps/games map excessively in wine. Some even far above what you'd expect from game size (IIRC I've seen below 1G in size games dying from this). It's relatively rare and would be nice if it got fixed, but chances are it won't be.
Perhaps once the new 32-on-64 mode becomes reliable things get changed, but that's not a given.
If you checked the range correctly, Zeb is most likely the author of the change that triggered this.