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From: Phil Blundell <philb@gnu.org>
To: Martin Jansa <martin.jansa@gmail.com>
Date: Wed, 03 Oct 2012 11:44:48 +0100
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Subject: Re: [PATCH] insane: detect and warn about relocations in .text
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On Wed, 2012-10-03 at 12:31 +0200, Martin Jansa wrote:
> On Wed, Oct 03, 2012 at 11:24:12AM +0100, Phil Blundell wrote:
> > Signed-off-by: Phil Blundell <pb@pbcl.net>
> 
> Can you add a bit longer description of possible issues with relocations
> in .text? So that people seeing this issue will know how dangerous it is
> for them?
> 
> From my understanding (after reading
> http://www.gentoo.org/proj/en/hardened/pic-fix-guide.xml) it's mostly
> performance issue?

Yes, that's correct.  It basically falls into the same sort of category
as useless-rpaths; the binary will still work, but there will be some
adverse impact on performance and memory usage.  

Historically, the most common cause of DT_TEXTREL was accidentally
linking non-PIC code into a DSO.  Recent versions of the linker will
flatly refuse to do this on at least some architectures, though, so
hopefully this problem will just go away over time.

p.