Messages in this thread |  | | Date | Thu, 27 Sep 2001 10:18:24 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: max arguments for exec |
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On Wed, 26 Sep 2001, Kiril Vidimce wrote:
> Yeah, I know, but we would like to avoid building a custom kernel. If > we do end up going this route, I wonder if there is a limit for > MAX_ARG_PAGES. Any idea? I think 128 pages (512K) would be sufficient > for our needs.
be careful with MAX_ARG_PAGES, because struct binprm is allocated on the kernel stack, so if it's too big, the kernel stack will overflow in unexpected places. A realistic limit is 1-2 MB, that causes a 1-2 KB kernel stack footprint.
(ob'plug: or use the patch i posted, the size of struct binprm is constant and small there :-)
Ingo
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