[tor-bugs] #6979 [Tor]: TBB Bug: router.c:164

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#6979: TBB Bug: router.c:164
-----------------------+----------------------------------------------------
    Reporter:  eli     |       Owner:                      
        Type:  defect  |      Status:  new                 
    Priority:  normal  |   Milestone:  Tor: unspecified    
   Component:  Tor     |     Version:  Tor: 0.2.3.25       
  Resolution:          |    Keywords:  tor-bridge tor-relay
      Parent:          |      Points:                      
Actualpoints:          |  
-----------------------+----------------------------------------------------

Comment(by thefliegendeeep):

 I misconfigured things. /etc/tor/torrc was owned by root with 0600. Still
 a bug, but that seems to be why it occurs. Logs contained more important
 info too:

 Jul 17 04:20:55.000 [notice] Heartbeat: Tor's uptime is 1 day 6:00 hours,
 with 2053 circuits open. I've sent 1.59 GB and received 1.50 GB.
 Jul 17 06:25:02.000 [notice] Received reload signal (hup). Reloading
 config and resetting internal state.
 Jul 17 06:25:02.000 [notice] Read configuration file "/usr/share/tor/tor-
 service-defaults-torrc".
 Jul 17 06:25:02.000 [warn] Couldn't find $HOME environment variable while
 expanding "~/.torrc"; defaulting to "".
 Jul 17 06:25:02.000 [notice] Configuration file "/etc/tor/torrc" not
 present, using reasonable defaults.
 Jul 17 06:25:02.000 [notice] Opening Socks listener on 127.0.0.1:9050
 Jul 17 06:25:02.000 [notice] Closing no-longer-configured Control listener
 on 127.0.0.1:9051
 Jul 17 06:25:02.000 [notice] Closing no-longer-configured Directory
 listener on 0.0.0.0:80
 Jul 17 06:25:02.000 [notice] Closing no-longer-configured OR listener on
 0.0.0.0:443

 Jul 17 06:25:02.000 [notice] Tor 0.2.3.25 (git-3fed5eb096d2d187) opening
 new log file.
 Jul 17 06:25:02.000 [notice] Closing old Control listener on
 127.0.0.1:9051
 Jul 17 06:25:02.000 [notice] Closing old Directory listener on 0.0.0.0:80
 Jul 17 06:25:02.000 [notice] Closing old OR listener on 0.0.0.0:443
 Jul 17 06:25:03.000 [err] get_server_identity_key(): Bug: router.c:171:
 get_server_identity_key: Assertion server_mode(get_options()) failed;
 aborting.

 Jul 19 05:07:55.000 [notice] Heartbeat: Tor's uptime is 6:00 hours, with
 53 circuits open. I've sent 1.34 GB and received 1.28 GB.
 Jul 19 06:25:02.000 [notice] Received reload signal (hup). Reloading
 config and resetting internal state.
 Jul 19 06:25:02.000 [notice] Read configuration file "/usr/share/tor/tor-
 service-defaults-torrc".
 Jul 19 06:25:02.000 [warn] Couldn't find $HOME environment variable while
 expanding "~/.torrc"; defaulting to "".
 Jul 19 06:25:02.000 [notice] Configuration file "/etc/tor/torrc" not
 present, using reasonable defaults.
 Jul 19 06:25:02.000 [notice] Opening Socks listener on 127.0.0.1:9050
 Jul 19 06:25:02.000 [notice] Closing no-longer-configured Control listener
 on 127.0.0.1:9051
 Jul 19 06:25:02.000 [notice] Closing no-longer-configured Directory
 listener on 0.0.0.0:80
 Jul 19 06:25:02.000 [notice] Closing no-longer-configured OR listener on
 0.0.0.0:443

 Jul 19 06:25:02.000 [notice] Tor 0.2.3.25 (git-3fed5eb096d2d187) opening
 new log file.
 Jul 19 06:25:02.000 [notice] Closing old Control listener on
 127.0.0.1:9051
 Jul 19 06:25:02.000 [notice] Closing old Directory listener on 0.0.0.0:80
 Jul 19 06:25:02.000 [notice] Closing old OR listener on 0.0.0.0:443
 Jul 19 11:07:55.000 [notice] Heartbeat: Tor's uptime is 12:00 hours, with
 1 circuits open. I've sent 2.01 GB and received 1.93 GB.
 Jul 19 17:07:55.000 [notice] Heartbeat: Tor's uptime is 18:00 hours, with
 2 circuits open. I've sent 2.02 GB and received 1.94 GB.

 So, im assuming that it starts with enough privileges to read the config,
 runs as a server, then receives the reload signal, doesnt have enough
 privileges anymore, thus defaults to not being a server, but some code can
 still be running thinking it is, hence the assertion error once.

 Still try and get a stacktrace? Maybe send some sighups as well. I could
 also just fix the permission problem...

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6979#comment:17>
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