Messages in this thread | | | Date | Thu, 18 Nov 1999 10:49:26 +0100 | From | Pavel Machek <> | Subject | Re: [RFC]: madvise(2) and mincore(2) in 2.3.26 |
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Hi!
> > > here's a snapshot of madvise, against kernel 2.3.26. i'd like some > > > comments and review, then i'll port it to a stable release of 2.3 > > > (probably 2.3.29) for inclusion by Linus. > > > > You seem to split up vma's. Cant that be used by evil looser to eat > > precious kernel ram? (Imagine DoS attack: mmap 1Gig and madvise each > > page separately.) > > you can orchestrate the same attack by mmapping 4K files over and over.
I thought that there's protection over exactly this. I'm not sure. Just food for thought. (There _must_ be such protection, this is too trivial to do.) Pavel -- The best software in life is free (not shareware)! Pavel GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+
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