[tor-bugs] #17659 [Tor]: BUG : connection_ap_mark_as_pending_circuit()

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#17659: BUG : connection_ap_mark_as_pending_circuit()
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 Reporter:  cypherpunks                         |          Owner:
     Type:  defect                              |         Status:  new
 Priority:  Medium                              |      Milestone:  Tor:
Component:  Tor                                 |  0.2.8.x-final
 Severity:  Blocker                             |        Version:  Tor:
 Keywords:  TorCoreTeam201512, 201511-deferred  |  unspecified
Parent ID:                                      |     Resolution:
  Sponsor:                                      |  Actual Points:
                                                |         Points:
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Comment (by teor):

 I saw this issue happen once in tor master on OS X, but I can't seem to
 reproduce it.
 It seems to be a race condition on connection failure.

 I got the following log entries:
 {{{
 [notice] Opening Socks listener on 127.0.0.1:9050
 [notice] Bootstrapped 0%: Starting
 [notice] Bootstrapped 5%: Connecting to directory server
 [warn] connection_ap_attach_pending: Bug: 0x7fa81b519af0 has impossible
 magic value 2575892462 (on Tor 0.2.8.0-alpha-dev 61430a90b99325b1)
 }}}

 What I did:
 1. Start tor using no arguments: `src/or/tor`
 2. Block its connections using LittleSnitch (a network interception
 program that blocks outgoing connections until I make a decision whether
 to block or allow them)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17659#comment:11>
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