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

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Message-ID: <CAMe9rOqkWoqkiC1dreM37HhO-bRYkY3bz-aPhRyntDxrhXJE+g@mail.gmail.com>
Date:	Wed, 11 Dec 2013 12:02:50 -0800
From:	"H.J. Lu" <hjl.tools@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jiri Kosina <jkosina@...e.cz>, LKML <linux-kernel@...r.kernel.org>,
	Josh Boyer <jwboyer@...hat.com>
Subject: Re: [PATCH] binfmt_elf: fix PIE load with randomization disabled

On Wed, Dec 11, 2013 at 11:43 AM, H. Peter Anvin <hpa@...or.com> wrote:
> On 12/11/2013 10:21 AM, H.J. Lu wrote:
>> On Wed, Dec 11, 2013 at 9:49 AM, H. Peter Anvin <hpa@...or.com> wrote:
>>> On 12/11/2013 05:41 AM, H.J. Lu wrote:
>>>>
>>>> When -Ttext-segment=XXX is used, the program is expected to
>>>> load at XXX, regardless -pie is used or not.
>>>>
>>>
>>> "Expected to" by whom?  I think that is at the very best a matter of
>>> interpretation.
>>
>> # ld --help
>> ...
>>  -Ttext-segment ADDRESS      Set address of text segment
>> ...
>>
>
> I feel a very circular argument going around here... what do the actual
> user(s) of this option expect?

User expects the executable will be loaded at the address
specified by -Ttext-segment.

-- 
H.J.
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