[tor-bugs] #20979 [Applications/Tor Browser Sandbox]: runtime/cgo: pthread_create failed: Resource temporarily unavailable

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#20979: runtime/cgo: pthread_create failed: Resource temporarily unavailable
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 Reporter:  vladimiroff                       |          Owner:  yawning
     Type:  defect                            |         Status:  new
 Priority:  Medium                            |      Milestone:
Component:  Applications/Tor Browser Sandbox  |        Version:
 Severity:  Normal                            |     Resolution:
 Keywords:  pthread_create failed             |  Actual Points:
Parent ID:                                    |         Points:
 Reviewer:                                    |        Sponsor:
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Comment (by yawning):

 Looking at the trace, it's crashing in the pure Go DNS resolver trying to
 fetch the list of bundles to download.  Since I can't reproduce this, I'll
 need someone to paste the crash output (like the `panic.txt`) with
 debugging enabled.

 {{
 export GOTRACEBACK=system
 export GODEBUG=netdns=2
 ./bin/sandboxed-tor-browser
 }}

 Could also try forcing the cgo resolver with `export
 GODEBUG=netdns=cgo+2`, but the non-cgo version should be the more robust
 one...

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20979#comment:2>
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