From: Stefan Kangas <stefan@marxist.se>
To: Philippe Vaucher <philippe.vaucher@gmail.com>
Cc: 23529@debbugs.gnu.org, 13964@debbugs.gnu.org
Subject: bug#13964: bug#23529: Request for fixing randomize_va_space build issues
Date: Sat, 14 Sep 2019 06:18:43 +0200 [thread overview]
Message-ID: <CADwFkmmO+n4oA8ZeQrTNtfCqyF2pa9vXiG+joMD5gG+QJnDj1g@mail.gmail.com> (raw)
In-Reply-To: <877gl9t1vb.fsf@gmail.com>
Philippe Vaucher <philippe.vaucher@gmail.com> writes:
> When /proc/sys/kernel/randomize_va_space is 2, emacs fails to build:
>
> Dumping under the name emacs
> **************************************************
> Warning: Your system has a gap between BSS and the
> heap (20865783 bytes). This usually means that exec-shield
> or something similar is in effect. The dump may
> fail because of this. See the section about
> exec-shield in etc/PROBLEMS for more information.
> **************************************************
> /bin/bash: line 7: 8981 Segmentation fault (core dumped)
> ./temacs --batch --load loadup bootstrap
> Makefile:815: recipe for target 'bootstrap-emacs' failed
> make[1]: *** [bootstrap-emacs] Error 1
> make[1]: Leaving directory '/tmp/emacs/src'
Is this still an issue with Emacs 27.0.50 (current master branch)?
etc/NEWS says:
** Emacs now uses a "portable dumper" instead of unexec.
This improves compatibility with memory allocation on modern systems,
and in particular better supports the Address Space Layout
Randomization (ASLR) feature, a security technique used by most modern
operating systems.
Thanks,
Stefan Kangas
next prev parent reply other threads:[~2019-09-14 4:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-15 10:07 bug#13964: 24.3; randomize_va_space is back Trent W. Buck
2019-09-14 4:18 ` Stefan Kangas [this message]
2019-09-14 8:52 ` bug#13964: bug#23529: Request for fixing randomize_va_space build issues Philippe Vaucher
2019-09-14 10:39 ` Stefan Kangas
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