[tbb-bugs] #30214 [Applications/Tor Browser]: TBA - NPE in ChangeOnionAlphaRunnable

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu May 2 00:40:44 UTC 2019

#30214: TBA - NPE in ChangeOnionAlphaRunnable
 Reporter:  sysrqb                               |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-mobile, tbb-8.5-must,            |  Actual Points:
  TorBrowserTeam201904                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
Changes (by sysrqb):

 * status:  new => needs_review


 I don't have steps for reproducing it, but I think I have a branch that
 prevents it. This is only a guess, though. Branch `30214_00` in my repo.

 I still think this is happening when the user presses the gear button
 after they started bootstrapping. This patch tries preventing the race
 condition where the background thread remains alive after the current
 activity becomes invalid.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30214#comment:3>
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