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Re: [tor-bugs] #3047 [Tor Relay]: Assertion on master: circuitbuild.c:2968: onion_pick_cpath_exit: Assertion exit failed; aborting



#3047: Assertion on master: circuitbuild.c:2968: onion_pick_cpath_exit: Assertion
exit failed; aborting
-----------------------+----------------------------------------------------
 Reporter:  nickm      |          Owner:  nickm             
     Type:  defect     |         Status:  new               
 Priority:  critical   |      Milestone:  Tor: 0.2.3.1-alpha
Component:  Tor Relay  |        Version:                    
 Keywords:             |         Parent:                    
   Points:             |   Actualpoints:                    
-----------------------+----------------------------------------------------

Comment(by arma):

 For posterity, here are my intro-level logs. moria1 offers a hidden
 service. It was running inside valgrind, meaning everything takes longer
 than it should, so it's quite possible we had established reachability of
 very few relays by the point of the assert.

 Apr 29 15:15:29.000 [info] rend_services_introduce(): Picked router
 sandvine as an intro point for xxx.
 Apr 29 15:15:29.000 [info] rend_service_launch_establish_intro():
 Launching circuit to introduction point "gpfTOR5" for service xxx
 Apr 29 15:15:29.000 [info] circuit_launch_by_extend_info(): Cannibalizing
 circ 'PPrivCom025' for purpose 14 (Hidden service: Establishing
 introduction point)
 Apr 29 15:15:29.000 [info] rend_service_launch_establish_intro(): The
 intro circuit we just cannibalized ends at
 $00FF681195F8868F3070963AD5F6E07B6CBA18E5, but we requested an intro
 circuit to $01A2B9FA4F68B26F25427C87EE866A255309F8D5. Updating our
 service.
 Apr 29 15:15:29.000 [info] rend_service_intro_has_opened(): Established
 circuit 38799 as introduction point for service xxx
 Apr 29 15:15:29.000 [info] rend_service_launch_establish_intro():
 Launching circuit to introduction point "sandvine" for service xxx
 Apr 29 15:15:29.000 [info] onion_pick_cpath_exit(): Using requested exit
 node 'sandvine'
 Apr 29 15:15:29.000 [info] smartlist_choose_node_by_bandwidth_weights():
 Empty routerlist passed in to consensus weight node selection for rule
 weight as guard
 Apr 29 15:15:29.000 [info] smartlist_choose_node_by_bandwidth(): Empty
 routerlist passed in to old node selection for rule weight as guard
 Apr 29 15:15:29.000 [info] router_choose_random_node(): We couldn't find
 any live, stable, guard routers; falling back to list of all routers.
 Apr 29 15:15:29.000 [info] node_get_by_nickname(): The name "PPrivCom012"
 is listed as Unnamed: there is some router that holds it, but not one
 listed in the current consensus.
 Apr 29 15:15:29.000 [info] node_get_by_nickname(): The name "PPrivCom013"
 is listed as Unnamed: there is some router that holds it, but not one
 listed in the current consensus.
 Apr 29 15:15:29.000 [info] node_get_by_nickname(): The name "PPrivCom014"
 is listed as Unnamed: there is some router that holds it, but not one
 listed in the current consensus.
 Apr 29 15:15:29.000 [info] node_get_by_nickname(): The name "PPrivCom021"
 is listed as Unnamed: there is some router that holds it, but not one
 listed in the current consensus.
 Apr 29 15:15:29.000 [info] smartlist_choose_node_by_bandwidth_weights():
 Empty routerlist passed in to consensus weight node selection for rule
 weight as middle node
 Apr 29 15:15:29.000 [info] smartlist_choose_node_by_bandwidth(): Empty
 routerlist passed in to old node selection for rule no weighting
 Apr 29 15:15:29.000 [info] router_choose_random_node(): We couldn't find
 any live, stable routers; falling back to list of all routers.
 Apr 29 15:15:29.000 [info] circuit_send_next_onion_skin(): First hop:
 finished sending CREATE cell to 'PPrivCom025'
 Apr 29 15:15:29.000 [info] circuit_predict_and_launch_new(): Have 5 clean
 circs (2 internal), need another exit circ.
 Apr 29 15:15:29.000 [info] choose_good_exit_server_general(): Found 0
 servers that might support 0/1 pending connections.
 Apr 29 15:15:29.000 [info] choose_good_exit_server_general(): We couldn't
 find any live, fast routers; falling back to list of all routers.
 Apr 29 15:15:29.000 [info] choose_good_exit_server_general(): Found 11
 servers that might support 1/1 pending connections.
 Apr 29 15:15:29.000 [info] choose_good_exit_server_general(): Chose exit
 server 'kato'
 Apr 29 15:15:29.000 [err] onion_pick_cpath_exit(): Bug:
 circuitbuild.c:2968: onion_pick_cpath_exit: Assertion exit failed;
 aborting.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3047#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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