[tor-bugs] #28656 [Core Tor]: Bug: src/feature/nodelist/nodelist.c:2501: compute_frac_paths_available : Non-fatal assertion !(f_exit > 0.0) failed.

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Nov 29 03:42:17 UTC 2018


#28656: Bug: src/feature/nodelist/nodelist.c:2501: compute_frac_paths_available :
Non-fatal assertion !(f_exit > 0.0) failed.
------------------------------+--------------------------
 Reporter:  meejah            |          Owner:  (none)
     Type:  defect            |         Status:  new
 Priority:  Medium            |      Component:  Core Tor
  Version:  Tor: unspecified  |       Severity:  Normal
 Keywords:                    |  Actual Points:
Parent ID:                    |         Points:
 Reviewer:                    |        Sponsor:
------------------------------+--------------------------
 I've been running Tor master recently, and saw this. This tor client
 (should have been) mostly idle for the past several days. It would have
 been used to create a bunch of custom circuits and then left alone. I see
 this in the logs:

 {{{
 Nov 28 15:15:31.000 [warn] tor_bug_occurred_(): Bug:
 src/feature/nodelist/nodelist.c:2501: compute_frac_paths_available: Non-
 fatal assertion !(f_exit > 0.0) failed. (on Tor 0.4.0.0-alpha-dev
 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug: Non-fatal assertion !(f_exit > 0.0) failed
 in compute_frac_paths_available at src/feature/nodelist/nodelist.c:2501.
 Stack trace: (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(log_backtrace_impl+0x47)
 [0x55c0f4988067] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(tor_bug_occurred_+0xc0)
 [0x55c0f4983630] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(+0x11ca02)
 [0x55c0f48baa02] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:
 ./src/app/tor(router_have_minimum_dir_info+0x13f) [0x55c0f48bf3bf] (on Tor
 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:
 ./src/app/tor(directory_info_has_arrived+0x39) [0x55c0f4807469] (on Tor
 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:
 ./src/app/tor(connection_dir_reached_eof+0x103a) [0x55c0f487ff0a] (on Tor
 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:
 ./src/app/tor(connection_handle_read+0x841) [0x55c0f48010e1] (on Tor
 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(+0x68fde)
 [0x55c0f4806fde] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0x6a0) [0x7fdcfe4455a0] (on Tor
 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(do_main_loop+0x9d)
 [0x55c0f48083ad] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(tor_run_main+0x13b3)
 [0x55c0f47f5ae3] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(tor_main+0x3a)
 [0x55c0f47f2f1a] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(main+0x19)
 [0x55c0f47f2a99] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     /lib/x86_64-linux-
 gnu/libc.so.6(__libc_start_main+0xf1) [0x7fdcfd3712e1] (on Tor 0.4.0.0
 -alpha-dev 469f47ef8dc8b181)
 Nov 28 15:15:31.000 [warn] Bug:     ./src/app/tor(_start+0x2a)
 [0x55c0f47f2aea] (on Tor 0.4.0.0-alpha-dev 469f47ef8dc8b181)
 Nov 28 16:22:17.000 [notice] Heartbeat: Tor's uptime is 7 days 0:00 hours,
 with 0 circuits open. I've sent 2.66 MB and received 25.15 MB.
 }}}

 On the advice of `#tor-dev` I'm attaching the datadir.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28656>
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