[tor-bugs] #12860 [Tor]: "Couldn't format create cell" warning can be triggered remotely for relayed cells

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#12860: "Couldn't format create cell" warning can be triggered remotely for relayed
cells
-------------------------+---------------------
 Reporter:  cypherpunks  |          Owner:
     Type:  defect       |         Status:  new
 Priority:  normal       |      Milestone:
Component:  Tor          |        Version:
 Keywords:  tor-relay    |  Actual Points:
Parent ID:               |         Points:
-------------------------+---------------------
 If relay process extent request then it can to fill logs by warnings about
 wrongly formatted create cells. It's easy to reproduce such cells and to
 trigger logs for relay.
 {{{
   if (r < 0) {
     log_warn(LD_CIRC,"Couldn't format create cell");
     return -1;
   }
 }}}
 It need lower logs level or rate limiting or LOG_PROTOCOL_WARN
 (preferable) for relayed cells.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12860>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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