linux-kernel - Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG

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Message-ID: <alpine.LFD.0.999.0710041413020.23684@woody.linux-foundation.org>
Date:	Thu, 4 Oct 2007 14:21:23 -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:
> 
> Anything else you'd like me to try?

Well, since others definitely don't see this, including me, and I can do 
things like 62MB exec arrays:

	[torvalds@...dy linux]$ echo $(find /home/torvalds/) | wc
	      1  883304 63000962

without getting any overflows (much less just on the kernel sources, which 
is less than a megabyte of pathnames), I think it would be good if you 
were to just instrument the kernel and make it do a "printk()" when it 
returns E2BIG in fs/execve.c (or the NULL returns from get_arg_page()).

Just to figure out *which* test fails for you but apparently nobody else.

		Linus
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