[tor-bugs] #21312 [Obfuscation/Snowflake]: snowflake-client is pegged at 100% cpu

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#21312: snowflake-client is pegged at 100% cpu
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 Reporter:  arlolra                |          Owner:  arlolra
     Type:  defect                 |         Status:  needs_review
 Priority:  High                   |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Major                  |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
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Comment (by dcf):

 Replying to [comment:33 dcf]:
 > I suppose that the corresponding patches for client and proxy-go will
 also have the same flaw? Perhaps this is the cause of the short delays
 that cypherpunks saw in comment:26: the proxy-go instances are randomly
 crashing and being restarted. I'll add some logging to them and see if
 that's the case.

 It does appear to be the case that proxy-go is crashing and being
 restarted. One of the instances was automatically restarted 6 times since
 I started it manually 30 minutes ago.
 {{{
 2018/03/14 02:34:27 starting
 ...
 2018/03/14 02:34:53 starting
 ...
 2018/03/14 02:37:54 starting
 ...
 2018/03/14 02:39:54 starting
 ...
 2018/03/14 02:40:55 starting
 ...
 2018/03/14 02:41:55 starting
 ...
 2018/03/14 03:02:09 starting
 }}}
 I'll let it run overnight, and tomorrow I plan to try an analogous patch
 to the one in comment:32. I've also re-started the memory and file
 descriptor monitors, in case the memory leak was only being masked by
 frequent restarts.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21312#comment:34>
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