[tbb-bugs] #19400 [Applications/Tor Browser]: [Asan] Crash in js::AsmJSModule::deserialize / DeserializeSig

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#19400: [Asan] Crash in js::AsmJSModule::deserialize / DeserializeSig
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 Reporter:  cypherpunks                          |          Owner:  tbb-
     Type:  defect                               |  team
 Priority:  Very High                            |         Status:
Component:  Applications/Tor Browser             |  assigned
 Severity:  Critical                             |      Milestone:
 Keywords:  tbb-crash, TorBrowserTeam201606,     |        Version:
  tbb-6.0-issues                                 |     Resolution:
Parent ID:                                       |  Actual Points:
 Reviewer:                                       |         Points:
                                                 |        Sponsor:
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Comment (by mcs):

 Replying to [comment:16 gk]:
 > a) What role exactly plays the updater here?

 Running the updater is not required. I was able to reproduce the crash by
 first visiting Facebook using Tor Browser 6.0 and then running a clean
 copy of 6.0.1 (I installed it next to 6.0 so that the TorBrowser-Data
 directory was shared). After switching back to 6.0, things are fine again
 (no crash).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19400#comment:19>
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