[tor-bugs] #5650 [Tor]: Tor hogging CPU

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Apr 10 23:32:18 UTC 2013


#5650: Tor hogging CPU
-----------------------+----------------------------------------------------
 Reporter:  One Sock   |          Owner:  nickm             
     Type:  defect     |         Status:  needs_review      
 Priority:  major      |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor        |        Version:                    
 Keywords:  tor-relay  |         Parent:                    
   Points:             |   Actualpoints:                    
-----------------------+----------------------------------------------------
Changes (by nickm):

  * status:  assigned => needs_review


Comment:

 Okay, it looks like this is happening while we get a write event on a
 connection in state OR_CONN_STATE_TLS_SERVER_RENEGOTIATING.  We then call
 "connection_or_handle_read", since we expect that we're in read-blocked-
 on-write state.  But in fact there is nothing to read.

 I have a more or less totally untested fix in my branch "bug5650" in my
 public repository. It's against 0.2.3.  It needs testing!

 I'll also attach it as a patch.  Please let me know if it stops this bug,
 or breaks the server entirely, or what.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5650#comment:13>
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