linux-kernel - Re: 2.6.23-mm1

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Message-ID: <Pine.LNX.4.64.0710171108090.18815@twin.jikos.cz>
Date:	Wed, 17 Oct 2007 11:10:23 +0200 (CEST)
From:	Jiri Kosina <jikos@...os.cz>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>
Subject: Re: 2.6.23-mm1

On Wed, 17 Oct 2007, KAMEZAWA Hiroyuki wrote:

> I noticed 32bit binary on x86_64 behavior is changed on 2.6.23-mm1.
> This is a result of pmap after process returns -ENOMEM.(see attached program)
> == on 2.6.23 ==
[...]
>  total          4193272K
> ==
> == on 2.6.23-mm1==
[...]
>  total          2796560K
> ==
> Maybe get_unmapped_area() had some change. Is this intended ?

Hi,

hm, I guess this is probably due to pie-randomization patch, right? (could 
you please try reverting it, to see whether things get back to normal).

Oh well, this causes more trouble that I have ever imagined ... I will 
look into it, thanks a lot for the report. Andrew, please drop this one 
again, I will fix it up.

Thanks,

-- 
Jiri Kosina
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