[tor-bugs] #30992 [Core Tor/Tor]: circpadding machines have shutdown sync issues (with intro circ NACKs and other cases)

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#30992: circpadding machines have shutdown sync issues (with intro circ NACKs and
other cases)
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:
                                                 |  mikeperry
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.4.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.4.1.1-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  wtf-pad circpad-researchers-maybe-   |  Actual Points:
  want 043-should                                |
Parent ID:                                       |         Points:  3
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by mikeperry):

 I believe that https://github.com/mikeperry-tor/tor/tree/bug30992_draft
 should fix the issues I found in comment:7 and comment:10, but they are
 rare. I have not reproduced them yet.

 That branch may also solve several other "wrong hop" circpad warns and
 related issues.

 Going to wait a bit on review to see if asn's research work can exercise
 it and confirm.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30992#comment:25>
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