[tor-bugs] #27080 [Core Tor/Tor]: bridges fail on Tor 0.3.4.1-alpha and later

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#27080: bridges fail on Tor 0.3.4.1-alpha and later
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  (none)
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  0.3.5.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.3.4.1-alpha
 Severity:  Blocker                              |     Resolution:
 Keywords:  034-must, 035-must, regression,      |  Actual Points:
  tor-bridge 034-backport                        |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by teor):

 I did a manual git bisect using a script which I'll attach.
 {{{
 > 50 good
 > 25 bad
 > 37 bad
 > 43 good
 > 40 skip
 > 40 bbf0b92b1c bad
 > 42 fdc01cb40e skip
 > 42 d8509b450a bad - dgoulet/ticket25610_034_01-squashed
 > 42 b0224bf728 skip - dgoulet/ticket25610_034_01-squashed~2 (before
 merge)
 > 42 b0224bf728 + cherry pick bbf0b92b1c good -
 dgoulet/ticket25610_034_01-squashed~2 (before merge) + fix assertion
 failure
 > 42 bbf0b92b1c bad - dgoulet/ticket25610_034_01 + fix assertion failure
 }}}

 So I think that dgoulet/ticket25610_034_01 revealed the existing bugs, but
 our bisects couldn't find it due to the assertion failures around that
 merge.

 I might try bisecting dgoulet/ticket25610_034_01 tomorrow to find the
 problematic commit.

 I added some child tickets for various specific bugs. I'll also try fixing
 some of the child ticket bugs to see if they are causing the issue.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27080#comment:16>
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