Circuit on detached list which I had no reason to mark
Running a relay on Debian 8 amd64. 0.2.7.6-1~d80.jessie+1
While investigating why my relay had basically no network traffic (<MBit/s) for several hours, I stumbled onto this log line:
circuit_unlink_all_from_channel(): Bug: Circuit on detached list which I had no reason to mark (on Tor 0.2.7.6 )
Network traffic was down (most likely NOT due to infrastructure/upstream issues), at the end of that period the log entry appeared and network traffic got back to normal.
Since I'm not sure whether this is a duplicate of https://trac.torproject.org/projects/tor/ticket/12184 I'm reporting it separately and leave it for others to flag it as duplicate if that seems to be the case.