[tor-bugs] #21766 [Applications/Tor Browser]: Tor Browser based on ESR52 with e10s enabled crashed while trying to download a file

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#21766: Tor Browser based on ESR52 with e10s enabled crashed while trying to
download a file
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 Reporter:  gk                                   |          Owner:  mcs
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Critical                             |     Resolution:
 Keywords:  ff52-esr, tbb-e10s, tbb-crash,       |  Actual Points:
  TorBrowserTeam201705, tbb-7.0-must             |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor4
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Comment (by arthuredelstein):

 Replying to [comment:32 mcs]:
 > Update: The fix works for Kathy and me on Linux as well, unless the file
 being downloaded is so small that the network traffic is finished before
 we try to call `Suspend()` (Kathy and I happen to have a tiny 344 byte zip
 file that we were testing with among other larger files). We are now
 trying to modify the patch so that it only suspends if necessary.
 >
 > Any takers for testing on Windows, or should we simply wait for a
 nightly build? Kathy and I don't have a good standlone (non-gitian)
 Windows build setup, or at least we have not tried to build an ESR52-based
 browser there. But we should be able to do a gitian-based build if
 necessary.

 I can run a test on Windows today -- let me know when you have the
 modified patch.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21766#comment:34>
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