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Date: Sun, 04 Oct 2009 12:07:40 -0700
From: Doug Barton <dougb@FreeBSD.org>
Organization: http://www.FreeBSD.org/
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To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
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Cc: jhell <jhell@DataIX.net>, stable@freebsd.org,
	Andre Albsmeier <Andre.Albsmeier@siemens.com>
Subject: Re: security.bsd.map_at_zero=0 problem with samba33 (including
	solution)
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Bjoern A. Zeeb wrote:
> On Sat, 3 Oct 2009, Andre Albsmeier wrote:
> 
> Hi,
> 
>> On Sat, 03-Oct-2009 at 16:27:32 -0400, jhell wrote:
>>> On Sat, 3 Oct 2009 14:42 -0000, Andre.Albsmeier wrote:
>>>
>>>> FYI,
>>>>
>>>> after setting security.bsd.map_at_zero to 0 on 7.2-STABLE all
>>>> samba33 programmes did abort() immediately after start. The
>>>> solution was to use
>>>>
>>>> CONFIGURE_ARGS+= --disable-pie
>>>>
>>>>     -Andre
>>>>
>>>
>>> To add an additional note samba33 even when not running (not enabled
>>> by a rcvar)
>>> also runs a tdbcleanup routine on shutdown and/or start that also does
>>> abort().
>>
>> Yes, every samba programme is linked with -pie per default (so
>> all abort()).
> 
> 
> Thanks for reporting the issue.  People are aware of the problem now
> and we'll try to present a solution within the next days for better
> position-independent executable (PIE) handling.
> 
> Meanwhile there are multiple solutions for people affected:
> 
> (1) recompile the port;

Just to be clear, you have to recompile the port with --disable-pie
added to the CONFIGURE_ARGS in the Makefile.

It would also be nice if there were a __FreeBSD_version bump for this
new feature.


Doug

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