[tor-bugs] #28199 [Applications/Tor Browser]: Interrupted exit damages TB

[Tor Bug Tracker & Wiki]

#28199: Interrupted exit damages TB
------------------------------------------+----------------------
     Reporter:  traumschule               |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
------------------------------------------+----------------------
 When TB quits it takes 30 seconds to give back the prompt because tor
 wants to exit gracefully after the lines
 > [notice] Owning controller connection has closed -- exiting now.
 > [notice] Catching signal TERM, exiting cleanly.

 I just damaged my freshly updated 8.5a4 with ctrl+c on exit because i was
 impatient to wait. On the next start tor did not start anymore and gave no
 errors (i closed and opened TB several times without changes).

 The about dialog says "Firefox Quantum" and no page is loaded ({{{refused
 connection}}}).

 The log is missing any info on tor:
 {{{
 $ tbb-debug tor-browser_en-US8.5a4/
 Logging Tor Browser debug information to tor-browser.log
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a4/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 alloc factor 0.900000 0.900000
 alloc factor 0.900000 0.900000
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a4/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 alloc factor 0.900000 0.900000
 alloc factor 0.900000 0.900000
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a4/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 ^C
 tbb at t43:~$ tbb-debug tor-browser_en-US8.5a4/
 Logging Tor Browser debug information to tor-browser.log
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a4/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 alloc factor 0.900000 0.900000
 alloc factor 0.900000 0.900000
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a4/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 alloc factor 0.900000 0.900000
 alloc factor 0.900000 0.900000
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a4/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 ^C
 }}}

 Log before it was damaged:
 {{{
 $ tbb-debug tor-browser_en-US8.5a1/
 Logging Tor Browser debug information to tor-browser.log
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a1/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 alloc factor 0.900000 0.900000
 alloc factor 0.900000 0.900000
 Oct 25 11:49:34.507 [notice] Tor 0.3.5.3-alpha (git-444e9b37c53b0246)
 running on Linux with Libevent 2.1.8-stable, OpenSSL 1.0.2p, Zlib 1.2.11,
 Liblzma N/A, and Libzstd N/A.
 Oct 25 11:49:34.528 [notice] Tor can't help you if you use it wrong! Learn
 how to be safe at https://www.torproject.org/download/download#warning
 Oct 25 11:49:34.528 [notice] This version is not a stable Tor release.
 Expect more bugs than usual.
 Oct 25 11:49:34.546 [notice] Read configuration file "/media/user/tbb/tor-
 browser_en-US8.5a1/Browser/TorBrowser/Data/Tor/torrc-defaults".
 Oct 25 11:49:34.585 [notice] Read configuration file "/media/user/tbb/tor-
 browser_en-US8.5a1/Browser/TorBrowser/Data/Tor/torrc".
 Oct 25 11:49:34.674 [notice] Opening Socks listener on 127.0.0.1:9150
 Oct 25 11:49:34.676 [notice] Opened Socks listener on 127.0.0.1:9150
 Oct 25 11:49:34.676 [notice] Opening Control listener on 127.0.0.1:9151
 Oct 25 11:49:34.676 [notice] Opened Control listener on 127.0.0.1:9151
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a1/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 alloc factor 0.900000 0.900000
 alloc factor 0.900000 0.900000
 Fontconfig warning: "/home/tbb/tor-browser_en-
 US8.5a1/Browser/TorBrowser/Data/fontconfig/fonts.conf", line 85: unknown
 element "blank"
 ^C
 }}}
 TB should recognize that something is broken, tell the user that the
 bundle has been damaged and should be deleted and extracted again (even if
 this is obvious and users will figure it out, some may not and show up on
 #tor looking for support ..). Do we have any self-tests right now?

 The last message on exit should say that it needs time to clean up at the
 end or similar.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28199>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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