[tor-bugs] #28522 [Core Tor/Tor]: [armhf] (Sandbox) Caught a bad syscall attempt

Mon Nov 19 17:03:27 UTC 2018

#28522: [armhf] (Sandbox) Caught a bad syscall attempt
-------------------------------------------------+-------------------------
 Reporter:  bundesgebaermutter                   |          Owner:  (none)
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Component:  Core
                                                 |  Tor/Tor
  Version:  Tor: 0.3.4.9                         |       Severity:  Normal
 Keywords:                                       |  Actual Points:
  sandbox,armhf,syscall,debian,stretch           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
 Hello,

 I just come to give the sandbox option in tor´s configuration another try
 after I had done an update. And learnt that it did not work.

 The OS is Debian Stretch on a BananaPi (armhf, 32bit). Kernel is
 4.14.70-sunxi armv7l.

 {{{
 Nov 19 17:13:54 eisbaer Tor[11800]: Tor 0.3.4.9 (git-4ac3ccf2863b86e7)
 running on Linux with Libevent 2.0.21-stable, OpenSSL LibreSSL 2.8.2, Zlib
 1.2.8, Liblzma 5.2.2, and Libzstd 1.1.2.
 Nov 19 17:13:54 eisbaer Tor[11800]: Tor can't help you if you use it
 wrong! Learn how to be safe at
 https://www.torproject.org/download/download#warning
 Nov 19 17:13:54 eisbaer Tor[11800]: Read configuration file "/srv/ursus-
 tor/etc/tor/torrc".
 Nov 19 17:13:54 eisbaer Tor[11800]: Based on detected system memory,
 MaxMemInQueues is set to 748 MB. You can override this by setting
 MaxMemInQueues by hand.
 Nov 19 17:13:54 eisbaer Tor[11800]: Scheduler type KIST has been enabled.
 Nov 19 17:13:54 eisbaer Tor[11800]: Opening Control listener on
 127.0.0.1:9051
 Nov 19 17:13:54 eisbaer Tor[11800]: Opening Control listener on /srv
 /ursus-tor/var/run/control
 Nov 19 17:13:54 eisbaer Tor[11800]: Opening OR listener on 0.0.0.0:8080
 Nov 19 17:23:13 eisbaer Tor[11800]: Parsing GEOIP IPv4 file /srv/ursus-
 tor/etc/tor/geoip.
 Nov 19 17:23:16 eisbaer Tor[11800]: Configured to measure statistics. Look
 for the *-stats files that will first be written to the data directory in
 24 hours from now.

 ... **without** sandboxing tor starts bootstrapping here ...

 Nov 19 17:23:46 eisbaer tor[11800]:
 ============================================================ T= 1542644626
 Nov 19 17:23:46 eisbaer tor[11800]: (Sandbox) Caught a bad syscall attempt
 (syscall 289)

 ... according to a syscall list this is "sys_signalfd4" ...

 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(+0x1e5fda)[0x67dfda]
 Nov 19 17:23:46 eisbaer tor[11800]: /lib/arm-linux-
 gnueabihf/libc.so.6(__send+0x17)[0xb6d59278]
 Nov 19 17:23:46 eisbaer tor[11800]: /lib/arm-linux-
 gnueabihf/libc.so.6(__send+0x17)[0xb6d59278]
 Nov 19 17:23:46 eisbaer tor[11800]: /lib/arm-linux-
 gnueabihf/libc.so.6(__vsyslog_chk+0x275)[0xb6d55cea]
 Nov 19 17:23:46 eisbaer tor[11800]: /lib/arm-linux-
 gnueabihf/libc.so.6(syslog+0x17)[0xb6d55e98]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(+0x1d4628)[0x66c628]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(+0x1d49dc)[0x66c9dc]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(log_fn_+0x43)[0x66d150]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(sandbox_getaddrinfo+0x173)[0x67db20]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(tor_addr_lookup+0x155)[0x65915a]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(tor_lookup_hostname+0x23)[0x6628b4]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(resolve_my_address+0x175)[0x5c25e2]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(router_pick_published_address+0x43)[0x55266c]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(router_rebuild_descriptor+0x3f)[0x553340]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(router_get_my_routerinfo_with_err+0x47)[0x55241c]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(router_get_my_routerinfo+0x17)[0x5523b0]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(router_get_my_descriptor+0x15)[0x5524a6]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(init_keys+0x419)[0x5508aa]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(do_main_loop+0x77)[0x50f398]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(tor_run_main+0xff)[0x513084]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(tor_main+0x53)[0x50a4d0]
 Nov 19 17:23:46 eisbaer tor[11800]: /srv/ursus-
 tor/bin/tor(main+0x1d)[0x50a34a]
 Nov 19 17:23:46 eisbaer tor[11800]: /lib/arm-linux-
 gnueabihf/libc.so.6(__libc_start_main+0x9d)[0xb6cda4aa]
 Nov 19 17:23:47 eisbaer systemd[1]: tor.service: Main process exited,
 code=exited, status=1/FAILURE
 Nov 19 17:23:47 eisbaer systemd[1]: tor.service: Unit entered failed
 state.
 Nov 19 17:23:47 eisbaer systemd[1]: tor.service: Failed with result 'exit-
 code'.
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28522>
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