Re: [GHC] #7629: segmentation fault in compiled program, involves gtk, selinux

9 Apr 2013


      #7629: segmentation fault in compiled program, involves gtk, selinux
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    Reporter:  wgmitchener                                       |       Owner:  simonmar     
        Type:  bug                                               |      Status:  new          
    Priority:  high                                              |   Milestone:  7.6.2        
   Component:  Runtime System                                    |     Version:  7.4.2        
    Keywords:  segmentation fault, multithreading, selinux, gtk  |          Os:  Linux        
Architecture:  x86                                               |     Failure:  Runtime crash
  Difficulty:  Unknown                                           |    Testcase:               
   Blockedby:                                                    |    Blocking:               
     Related:                                                    |  
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Comment(by ian@…):

 commit 27cf625ab871f34434d9fe86cecf85a31f73f0e5
 {{{
 Author: Ian Lynagh 
 Date:   Tue Apr 9 13:53:28 2013 +0100

     Fix segfaults on SELinux machines; fixes #7629

     Patch from wgmitchener.

     From the ticket:
     The two addresses (adjustorStub and code) contain the same memory
     (double-mapped), but one is writable while the other is executable.
     This is how libffi works around the SELinux restrictions. On
     non-SELinux systems the code and data addresses are probably the same.

  rts/Adjustor.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)
 }}}

-- 
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7629#comment:29
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