linux-kernel - Re: [PATCH] binfmt_elf: fix PIE load with randomization disabled

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Message-ID: <52A63AD4.2030101@zytor.com>
Date:	Mon, 09 Dec 2013 13:49:08 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"H.J. Lu" <hjl.tools@...il.com>, Jiri Kosina <jkosina@...e.cz>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Josh Boyer <jwboyer@...hat.com>
Subject: Re: [PATCH] binfmt_elf: fix PIE load with randomization disabled

> 
>> PT_LOAD being non-zero causing randomization to be turned off seems like
>> quite unexpected behavior to me, with a great potential to cause a lot of
>> confusion.
> 
> There should be no difference between dynamic executable and PIE
> with non-zero vaddr when choosing where to load them.
> 

Why is that?  It would seem to be a big difference between a relocatable
binary (PIE) and one with a load address fixed at link time.

	-hpa

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