https://bugs.winehq.org/show_bug.cgi?id=43907
--- Comment #3 from ben.jolitz@gmail.com --- I've located the source of the preloader warnings - https://github.com/wine-staging/wine-staging/blob/3cc8f973989cb3e175f8caa013...
For some reason, an attempt to mmap for the 64bit top-down allocations and virtual heap fails. Unfortunately the patch can error out for a variety of reasons ("Has something in it", "errno not looked at so we don't know", et al).