[GHC] #14069: RTS linker maps code as writable

[GHC]

#14069: RTS linker maps code as writable
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  SantiM
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.8.1
       Component:  Runtime System    |              Version:  8.0.1
  (Linker)                           |
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4817
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"67c422ca0e7b94e021430e3dfc9b19f3de21ed16/ghc" 67c422c/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="67c422ca0e7b94e021430e3dfc9b19f3de21ed16"
 rts/linker/{SymbolExtras,elf_got}.c: map code as read-only

 protect mmaped addresses from writes after being initially manipulated

 Test Plan: ./validate

 Reviewers: bgamari, erikd, simonmar

 Reviewed By: bgamari

 Subscribers: angerman, carlostome, rwbarton, thomie, carter

 GHC Trac Issues: #14069

 Differential Revision: https://phabricator.haskell.org/D4817
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14069#comment:12>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler