https://bugs.winehq.org/show_bug.cgi?id=56650
--- Comment #6 from Zeb Figura z.figura12@gmail.com --- The question is really whether this is about the libc "heap" (which is not something that I thought the kernel had any concept of?), or if it's a blanket W^X imposition on the whole process. If the former, that's surprising and deserves investigation, because if I'm not mistaken we should never do that. If the latter, it's an immediate WONTFIX.
Finding any trace of documentation on execheap, or really SELinux in general, and which of these two is the case, proves very difficult.