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Message-ID: <alpine.LFD.0.999.0710041023480.23684@woody.linux-foundation.org>
Date: Thu, 4 Oct 2007 10:27:52 -0700 (PDT)
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Mathieu Chouquet-Stringer <mchouque@...e.fr>
cc: Ollie Wild <aaw@...gle.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Adrian Bunk <bunk@...sta.de>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
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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