https://bugs.winehq.org/show_bug.cgi?id=52563
--- Comment #4 from Zebediah Figura z.figura12@gmail.com --- I'm struggling to figure out what's going wrong here. The log doesn't really tell me anything, nor do I have any ideas.
The offending buffer (both here and for bug 52566) is the first one allocated, so it's not even like we or the driver should be mishandling offsets.
Nor should the map flags be any different if we aren't suballocating.
Does disabling CSMT change anything?