linux-kernel - Re: [PATCH -mm] Don't truncate /proc/PID/environ at 4096 characters

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Message-ID: <18161.27621.630048.643513@alkaid.it.uu.se>
Date:	Wed, 19 Sep 2007 20:35:17 +0200
From:	Mikael Pettersson <mikpe@...uu.se>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Mikael Pettersson <mikpe@...uu.se>, james-p@...ing-picture.com,
	linux-kernel@...r.kernel.org, aarapov@...hat.com,
	akpm@...ux-foundation.org
Subject: Re: [PATCH -mm] Don't truncate /proc/PID/environ at 4096 characters

H. Peter Anvin writes:
 > Mikael Pettersson wrote:
 > > On Wed, 19 Sep 2007 14:35:29 +0100, James Pearson wrote:
 > >> /proc/PID/environ currently truncates at 4096 characters, patch based on 
 > >> the /proc/PID/mem code.
 > > 
 > > Does /proc/PID/mem even work? If I do `strace cat /proc/PID/mem > /dev/null'
 > > for a known good PID, the first read() from /proc/PID/mem fails with ESRCH,
 > 
 > Of course it does.  Address zero isn't typically mapped.

Indeed. My bad :-(
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