From: Matthias Klose <doko@ubuntu.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: Nick Clifton <nickc@redhat.com>, Binutils <binutils@sourceware.org>
Subject: Re: binutils as policy checker (was: RFC: Add a linker warning when creating segments with RWX permissions)
Date: Tue, 3 May 2022 22:29:51 +0200 [thread overview]
Message-ID: <cb671042-b801-bb7e-10ad-f355f65bd6e8@ubuntu.com> (raw)
In-Reply-To: <CAMe9rOq4RA+n8fXDAZJsO-09sj+bAfwQ=n=yeRokk6Lv6B5UyQ@mail.gmail.com>
On 03.05.22 21:57, H.J. Lu wrote:
> On Tue, May 3, 2022 at 12:35 PM Matthias Klose <doko@ubuntu.com> wrote:
>>
>> On 28.04.22 11:46, Nick Clifton via Binutils wrote:
>>> Hi Guys,
>>>
>>> OK, attached is v2 of my proposed patch. The main features of this
>>> new version are:
>>>
>>> * There are now configure options which can turn off the generation
>>> of linker warnings about the creation of executable segments and
>>> the creation of executable stacks. By default however not using
>>> these configure options will result in the creation of a linker
>>> with all of the warnings enabled.
>>>
>>> * There is new linker command line option: --no-warn-rwx-segments
>>> which disables the warnings about executable segments.
>>>
>>> * There are tests for the new features, plus extra regexps in the
>>> testsuite's pruning proc to remove the warnings from the linker's
>>> output for normal tests.
>>>
>>> * The creation of a TLS segment with eXecute permission will trigger
>>> a warning, regardless of whether it has the read and/or write
>>> permissions set.
>>>
>>> * There is a new configure time option which will disable the
>>> creation of an executable stack simply because an input file is
>>> missing a .note-GNU-stack section (for those architectures where
>>> such a creation is the normal behaviour). This option is not
>>> enabled by default however. At least not yet.
>>>
>>> I think that this represents the best compromise between helping to
>>> promote secure builds whilst also allowing toolchain creators and
>>> program builders the option to disable the features if they wish.
>>>
>>> Any comments ?
>>
>> this commit contains a ld/aclocal.m4 generated with automake 1.16. Please
>> re-create that file with automake 1.15.1. And maybe re-create the Makefile.in
>> also with the correct automake version.
>>
>> Thanks, Matthias
>
> I am checking in this.
thanks, I see that zlib also processed with automake 1.16..2
Matthias
next prev parent reply other threads:[~2022-05-03 20:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-26 11:31 RFC: Add a linker warning when creating segments with RWX permissions Nick Clifton
2022-04-26 13:56 ` Jan Beulich
2022-04-26 16:39 ` Nick Clifton
2022-04-26 15:06 ` binutils as policy checker (was: RFC: Add a linker warning when creating segments with RWX permissions) Michael Matz
2022-04-26 15:20 ` Joel Sherrill
2022-04-28 9:46 ` Nick Clifton
2022-04-29 6:29 ` Sam James
2022-05-03 14:54 ` Michael Matz
2022-05-03 19:35 ` Matthias Klose
2022-05-03 19:57 ` H.J. Lu
2022-05-03 20:29 ` Matthias Klose [this message]
2022-04-26 16:47 ` Nick Clifton
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