[tor-bugs] #30649 [Core Tor/Tor]: Every few hours, relays [warn] Received circuit padding stop command for unknown machine.

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#30649: Every few hours, relays [warn] Received circuit padding stop command for
unknown machine.
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:
                                                 |  mikeperry
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.1.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.4.1.1-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-relay, circuitpadding, wtf-pad,  |  Actual Points:
  041-must                                       |
Parent ID:                                       |         Points:  1
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor2
-------------------------------------------------+-------------------------
Changes (by mikeperry):

 * status:  needs_revision => needs_review


Comment:

 I pushed more log protocol warn updates to the PR: now when padding
 negotiation fails due to either corrupt cell or "valid" refusal, we
 LOG_PROTOCOL_WARN. Those should not happen, but one of them was at info,
 so it was already quiet.

 I will file a new ticket for evaluating if the origin-side
 LOG_PROTOCOL_WARNs here should be LOG_WARNs or not.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30649#comment:10>
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