Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES

[Linus Torvalds <torvalds@linux-foundation.org>]

On Thu, 4 Oct 2007, Mathieu Chouquet-Stringer wrote:
> 
> I've seen the changes you made in commit b6a2fea39318 and I guess they
> might be responsible for my xargs breakage...
> 
> In the kernel source tree, if I run a stupid find | xargs ls, I now get
> this:
> xargs: ls: Argument list too long

What does your "ulimit -s" say?

I suspect that you might hit the code that limits execve() arguments to 
one quarter of the maximum stack size.

We could change that from 25% to something else (half? three quarters?), 
but if you really are hitting that limit, it sounds like you may have a 
really small stack size to begin with (ie if 25% is smaller than the old 
argument size limit of 128kB, you're running with a stack limit of less 
than half a meg, which sounds pretty dang small).

So I'd like to verify that the stack limit really is the issue, and not 
something else.

		Linus
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