[tbb-bugs] #22692 [Applications/Tor Browser]: Backport Linux content sandboxing from Firefox 54

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#22692: Backport Linux content sandboxing from Firefox 54
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 Reporter:  jld                                  |          Owner:  tbb-
                                                 |  team
     Type:  enhancement                          |         Status:  new
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Major                                |     Resolution:
 Keywords:  TorBrowserTeam201708,                |  Actual Points:
  GeorgKoppen201708                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by ah@…):

 I added a mremap() workaround to selfrando, release tb-v0.3.3 should fix
 these crashes.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22692#comment:13>
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