[cffi-devel] [Sbcl-devel] GC write-protected mappings vs. the OS kernel

[Juho Snellman]

Samium Gromoff <_deepfire at feelingofgreen.ru> writes:
> A missing detail: while the vector is created in a live core all /seems/
> to be well[1].  But when it comes from a dumped core, it gets a chance
> (there doesn't appears to be a determinism there) of being in a
> write-protected region.

Yeah, that'd explain it. We don't correctly restore information about
whether a page is boxed or unboxed when loading a core (relevant bits
in coreparse.c, and in gencgc.c:gencgc_pickup_dynamic).

-- 
Juho Snellman