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Re: Preview: portable dumper

From: Philipp Stephani
Subject: Re: Preview: portable dumper
Date: Tue, 29 Nov 2016 22:22:44 +0000

Paul Eggert <address@hidden> schrieb am Di., 29. Nov. 2016 um 22:35 Uhr:
On 11/29/2016 01:19 PM, Daniel Colascione wrote:
> Even*with*  a PIC Emacs (which I hope is the default, because ASLR
> greatly improves security), we can get these savings if
> mmap(BASE_ADDRESS_STORED_IN_DUMP, ...) succeeds and we can map the dump
> where we want.  If we can't map the dump where we want, we'll just
> relocate it.

Although your other advantages sound good, this one sounds worrisome. If
Emacs maps the dump to the same place every time, we are giving up ASLR
for the dump itself

Is that actually the case? Looking at the code, I see nothing that would prevent dumping with ASLR enabled. 

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