[tor-bugs] #32033 [Core Tor/Tor]: process_unix_exec assertion failure when ServerTransportPlugin refers to nonexistent file

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Oct 10 22:14:31 UTC 2019


#32033: process_unix_exec assertion failure when ServerTransportPlugin refers to
nonexistent file
--------------------------+------------------------------------
 Reporter:  dcf           |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:
Component:  Core Tor/Tor  |        Version:  Tor: 0.4.2.2-alpha
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by dcf):

 The first time I did this, I got a deeper stack trace, going all the way
 back to `_start`, but I could not reproduce it afterwards.

 {{{
 Oct 10 15:47:24.000 [notice] Starting with guard context "default"
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] tor_assertion_failed_(): Bug:
 src/lib/process/process_unix.c:265: process_unix_exec: Assertion line
 should be unreached failed; aborting. (on Tor 0.4.2.2-alpha-dev
 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug: Tor 0.4.2.2-alpha-dev (git-0d82a8be77ae8d7f):
 Assertion line should be unreached failed in process_unix_exec at
 src/lib/process/process_unix.c:265: . Stack trace: (on Tor 0.4.2.2-alpha-
 dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(log_backtrace_impl+0x56)
 [0x55712264aaa6] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(tor_assertion_failed_+0x147)
 [0x557122645b27] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(process_unix_exec+0x274)
 [0x55712261ba24] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(process_exec+0x5b)
 [0x557122619ddb] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:
 ./src/app/tor(pt_configure_remaining_proxies+0x563) [0x55712250c133] (on
 Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(set_options+0x17d2)
 [0x5571225c1052] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:
 ./src/app/tor(options_init_from_string+0x17d) [0x5571225c206d] (on Tor
 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:
 ./src/app/tor(options_init_from_torrc+0x404) [0x5571225c2704] (on Tor
 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(tor_init+0x3c7)
 [0x557122493277] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(tor_run_main+0xb4)
 [0x557122493ac4] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(tor_main+0x3a)
 [0x5571224920ca] (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(main+0x19) [0x557122491c89]
 (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     /lib/x86_64-linux-
 gnu/libc.so.6(__libc_start_main+0xeb) [0x7f465e57a09b] (on Tor 0.4.2.2
 -alpha-dev 0d82a8be77ae8d7f)).
 Oct 10 15:47:24.000 [notice] Unknown line received by managed proxy (Oct
 10 15:47:22.000 [err] Bug:     ./src/app/tor(_start+0x2a) [0x557122491cda]
 (on Tor 0.4.2.2-alpha-dev 0d82a8be77ae8d7f)).
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32033#comment:1>
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