Re: [tor-bugs] #12184 [Tor]: Circuit on detached list which I had no reason to mark

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#12184: Circuit on detached list which I had no reason to mark
-----------------------------+--------------------------------------
     Reporter:  cypherpunks  |      Owner:
         Type:  defect       |     Status:  needs_information
     Priority:  major        |  Milestone:  Tor: 0.2.5.x-final
    Component:  Tor          |    Version:  Tor: 0.2.5.4-alpha
   Resolution:               |   Keywords:  024-backport 025-triaged
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+--------------------------------------

Comment (by cypherpunks):

 > Does that mean it could actually be a third bug, since this ticket is
 older?
 Reports in this ticket includes different bugs for sure.

 `No unused circIDs found on channel` bug could be explained by botnet or
 something, without any actual bugs in code. According to reported logs,
 peers hangs for several minutes, which triggers filling of destroy queue:
 > Jul 18 15:52:47.000 [warn]  * Channel 343 last trasmitted a cell at
 1405698499 (268 seconds ago)
 > Jul 18 15:52:47.000 [warn]  * Channel 343 has averaged 9.210684 seconds
 between transmitted cells

 > Jul 20 13:31:03.000 [warn]  * Channel 1280552 last trasmitted a cell at
 1405862903 (160 seconds ago)
 > Jul 20 13:31:03.000 [warn]  * Channel 1280552 has averaged 4.625050
 seconds between transmitted cells


 `4294964108 outbound circuits` and `Discrepancy in counts for queued
 destroy cells` bugs are sign of memory corruption.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12184#comment:36>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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