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SubjectRe: mmap_min_addr and your local LSM (ok, just SELinux)
> Could the page table flags be used to mask this region?  i.e. force
> PROT_NONE (with the "desired" flags stored elsewhere) and in the segv
> handler check if it is kernel or user space, and then fix-up the flags and
> continue if it's userspace? (I really don't know the internals on this,
> but it would need to restore PROT_NONE on task-switch or something...)

That's racy with multiple threads.

-- -- Speaking for myself only.

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