Messages in this thread |  | | Date | Mon, 25 Sep 2000 16:47:21 -0400 (EDT) | From | "Benjamin C.R. LaHaise" <> | Subject | Re: the new VMt |
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On Mon, 25 Sep 2000 yodaiken@fsmlabs.com wrote:
> On Mon, Sep 25, 2000 at 09:23:48PM +0100, Alan Cox wrote: > > > my prediction is that if you show me an example of > > > DoS vulnerability, I can show you fix that does not require bean counting. > > > Am I wrong? > > > > I think so. Page tables are a good example > > I'm not too sure of what you have in mind, but if it is > "process creates vast virtual space to generate many page table > entries -- using mmap" > the answer is, virtual address space quotas and mmap should kill > the process on low mem for page tables.
No. Page tables are not freed after munmap (and for good reason). The counting of page table "beans" is critical.
-ben
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