[tor-bugs] #26987 [Core Tor/Tor]: Tor seems to be reading from two different time sources in a macOS VM

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#26987: Tor seems to be reading from two different time sources in a macOS VM
------------------------------+------------------------------
     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  macos, tor-time
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+------------------------------
 I started chutney (and its tors) a few minutes after resuming from sleep,
 but Tor sometimes gets the time wrong by 15 hours. (Which is approximately
 the time the VM last slept.)

 I wonder if we're using the wrong macOS time APIs?
 Or it could be a VM or macOS issue.

 {{{
 FAIL: ipv6-exit-min
 Detail: chutney/tools/warnings.sh /Users/base/chutney/net/nodes.1532996702
 Warning: Couldn't store my own vote! (I told myself, 'Bad valid-after
 time'.) Number: 2
 Warning: Rejecting vote from 127.0.0.1 with valid-after time of 2018-07-31
 00:26:05; we were expecting 2018-07-31 00:25:10 Number: 2
 Warning: Your system clock just jumped 55189 seconds backward; assuming
 established circuits no longer work. Number: 3
 Warning: Your system clock just jumped 55191 seconds forward; assuming
 established circuits no longer work. Number: 3
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26987>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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