[tor-bugs] #15901 [Tor]: apparent memory corruption -- very difficult to isolate

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#15901: apparent memory corruption -- very difficult to isolate
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     Reporter:  starlight  |      Owner:
         Type:  defect     |     Status:  new
     Priority:  critical   |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor        |    Version:  Tor: 0.2.6.10
   Resolution:             |   Keywords:
Actual Points:             |  Parent ID:
       Points:             |
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Comment (by starlight):

 Replying to [comment:28 someone_else]:
 > Running fine for 3 weeks doesn't mean anything. My theory is that some
 very specific and extremely unlikely sequence in the compressed file is
 responsible.
 >
 > >  Also different zlibs
 > > have been in use at the time of the event
 > > a) 1.2.8 shared library non-LTO,
 > > b) 1.2.8 static link LTO.
 >
 > Did you compile all of them yourself?

 Yes.  First instance of the bug occurred with
 one built by GCC 4.8.1, non-LTO -O3 (configure
 default) shared library.  Since then reproduced
 with 4.9.3 and maybe 4.9.2.  Have daily network
 backups so can reproduce exact everything for
 each occurrence.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15901#comment:32>
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