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SubjectRe: 2.1.125 Show stopper list: Draft
   From: alan@lxorguk.ukuu.org.uk (Alan Cox)
Date: Mon, 12 Oct 1998 20:54:04 +0100 (BST)

> What about the PGE/PTE problem? Any user can just mmap/munmap all possible
> (768 under x86) page tables for their process, then use up a lot of GFP_KERNEL
Do you have a demo for this ?

I think the solution is to just add PAGE_SIZE or whatever to RLIMIT_AS
every time a new page table chunk is allocated. If RLIMIT_AS cannot
be legitimately overridden like this, then add some new one and set a
sane default. If you do it the second way don't forget to notify the
glibc folks :-)

Later,
David S. Miller
davem@dm.cobaltmicro.com

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