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Re: [tor-bugs] #21415 [Core Tor/Tor]: tor_bug_occurred_: Bug: src/or/entrynodes.c:1845: select_entry_guard_for_circuit: Non-fatal assertion !(!guard_has_descriptor(guard)) failed.

Subject: Re: [tor-bugs] #21415 [Core Tor/Tor]: tor_bug_occurred_: Bug: src/or/entrynodes.c:1845: select_entry_guard_for_circuit: Non-fatal assertion !(!guard_has_descriptor(guard)) failed.
From: "Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>
Date: Wed, 08 Feb 2017 13:59:27 -0000
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#21415: tor_bug_occurred_: Bug: src/or/entrynodes.c:1845:
select_entry_guard_for_circuit: Non-fatal assertion
!(!guard_has_descriptor(guard)) failed.
--------------------------+------------------------------------
 Reporter:  cypherpunks   |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.0.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.0.3-alpha
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by cypherpunks):

 Reproduced. Posting complete log this time.

 {{{
 Feb 08 13:36:10.759 [notice] Tor 0.3.0.3-alpha (git-bb2ea3642d54ff03)
 running on Darwin with Libevent 2.1.8-stable, OpenSSL 1.0.2k and Zlib
 1.2.11.
 Feb 08 13:36:10.760 [notice] Tor can't help you if you use it wrong! Learn
 how to be safe at https://www.torproject.org/download/download#warning
 Feb 08 13:36:10.760 [notice] This version is not a stable Tor release.
 Expect more bugs than usual.
 Feb 08 13:36:10.760 [notice] Read configuration file "/Users/tor/.torrc".
 Feb 08 13:36:10.765 [notice] Opening Socks listener on 127.0.0.1:9050
 Feb 08 13:36:10.000 [notice] Parsing GEOIP IPv4 file /.../tor/geoip.
 Feb 08 13:36:10.000 [notice] Parsing GEOIP IPv6 file /.../tor/geoip6.
 Feb 08 13:36:10.000 [notice] Bootstrapped 0%: Starting
 Feb 08 13:36:11.000 [notice] Starting with guard context "bridges"
 Feb 08 13:36:11.000 [notice] new bridge descriptor '...
 Feb 08 13:36:11.000 [notice] new bridge descriptor '...
 Feb 08 13:36:11.000 [notice] new bridge descriptor '...
 Feb 08 13:36:11.000 [notice] Delaying directory fetches: Pluggable
 transport proxies still configuring
 Feb 08 13:36:12.000 [notice] Ignoring directory request, since no bridge
 nodes are available yet.
 Feb 08 13:36:12.000 [notice] Bootstrapped 80%: Connecting to the Tor
 network
 Feb 08 13:36:12.000 [notice] Bootstrapped 85%: Finishing handshake with
 first hop
 Feb 08 13:36:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:36:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:37:xx.000 [notice] Ignoring directory request, since no bridge
 nodes are available yet.
 Feb 08 13:37:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:37:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:37:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:37:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:37:30.000 [warn] tor_bug_occurred_: Bug:
 src/or/entrynodes.c:1845: select_entry_guard_for_circuit: Non-fatal
 assertion !(!guard_has_descriptor(guard)) failed. (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug: Non-fatal assertion
 !(!guard_has_descriptor(guard)) failed in select_entry_guard_for_circuit
 at src/or/entrynodes.c:1845. Stack trace: (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     0   tor
 0x0000000103a98f98 log_backtrace + 73 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     1   tor
 0x0000000103aad52b tor_bug_occurred_ + 268 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     2   tor
 0x0000000103a24587 entry_guard_pick_for_circuit + 307 (on Tor
 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     3   tor
 0x0000000103a282b5 guards_choose_guard + 138 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     4   tor
 0x00000001039b5c16 circuit_establish_circuit + 2261 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     5   tor
 0x00000001039c6f1b circuit_build_needed_circs + 751 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     6   tor
 0x0000000103a344ef second_elapsed_callback + 811 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     7   libevent-2.1.6.dylib
 0x0000000103bf6127 event_process_active_single_queue + 1262 (on Tor
 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     8   libevent-2.1.6.dylib
 0x0000000103bf29d6 event_base_loop + 1189 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     9   tor
 0x0000000103a33ed4 do_main_loop + 1118 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     10  tor
 0x0000000103a360cd tor_main + 235 (on Tor 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     11  tor
 0x000000010399e775 main + 25 (on Tor 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:30.000 [warn] Bug:     12  libdyld.dylib
 0x00007fffbc194255 start + 1 (on Tor 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] tor_bug_occurred_: Bug:
 src/or/entrynodes.c:1845: select_entry_guard_for_circuit: Non-fatal
 assertion !(!guard_has_descriptor(guard)) failed. (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug: Non-fatal assertion
 !(!guard_has_descriptor(guard)) failed in select_entry_guard_for_circuit
 at src/or/entrynodes.c:1845. Stack trace: (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     0   tor
 0x0000000103a98f98 log_backtrace + 73 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     1   tor
 0x0000000103aad52b tor_bug_occurred_ + 268 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     2   tor
 0x0000000103a24587 entry_guard_pick_for_circuit + 307 (on Tor
 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     3   tor
 0x0000000103a282b5 guards_choose_guard + 138 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     4   tor
 0x00000001039b5c16 circuit_establish_circuit + 2261 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     5   tor
 0x00000001039c6f1b circuit_build_needed_circs + 751 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     6   tor
 0x0000000103a344ef second_elapsed_callback + 811 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     7   libevent-2.1.6.dylib
 0x0000000103bf6127 event_process_active_single_queue + 1262 (on Tor
 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     8   libevent-2.1.6.dylib
 0x0000000103bf29d6 event_base_loop + 1189 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     9   tor
 0x0000000103a33ed4 do_main_loop + 1118 (on Tor 0.3.0.3-alpha
 bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     10  tor
 0x0000000103a360cd tor_main + 235 (on Tor 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     11  tor
 0x000000010399e775 main + 25 (on Tor 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Bug:     12  libdyld.dylib
 0x00007fffbc194255 start + 1 (on Tor 0.3.0.3-alpha bb2ea3642d54ff03)
 Feb 08 13:37:31.000 [warn] Failed to find node for hop 0 of our path.
 Discarding this circuit.
 Feb 08 13:37:xx.000 [warn] Proxy Client: unable to connect to ...
 ("general SOCKS server failure")
 Feb 08 13:37:45.000 [notice] Interrupt: exiting cleanly.

 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21415#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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References:
- [tor-bugs] #21415 [Core Tor/Tor]: tor_bug_occurred_: Bug: src/or/entrynodes.c:1845: select_entry_guard_for_circuit: Non-fatal assertion !(!guard_has_descriptor(guard)) failed.
  - From: Tor Bug Tracker & Wiki