[tor-bugs] #8093 [Tor]: Jan 29 23:32:20.066 [Warning] Bug/attack: unexpected sendme cell from client. Closing circ.

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#8093: Jan 29 23:32:20.066 [Warning] Bug/attack: unexpected sendme cell from
client. Closing circ.
--------------------------+-------------------------------------
     Reporter:  Gravitas  |      Owner:  nickm
         Type:  defect    |     Status:  new
     Priority:  normal    |  Milestone:  Tor: 0.2.6.x-final
    Component:  Tor       |    Version:  Tor: 0.2.4.9-alpha
   Resolution:            |   Keywords:  tor-client, 025-triaged
Actual Points:            |  Parent ID:
       Points:            |
--------------------------+-------------------------------------

Comment (by alphawolf):

 Attached debug log corresponds with the 2/10 of a second before (and
 including) this warning:
 {{{
 Jun 20 13:13:54.178 [warn] Unexpected sendme cell from client. Closing
 circ (window 1000).
 }}}

 I noticed several instances of `circuit_receive_relay_cell(): Passing on
 unrecognized cell`, which seems odd.

 This is a non-exit relay/directory mirror that has a SOCKS port open to
 the local network.  IRC is the only client app ever attached to it.  I

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8093#comment:28>
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