[tor-bugs] #12035 [Tor]: Crash/stack trace with Sandbox enabled and DirReqStatistics not disabled

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#12035: Crash/stack trace with Sandbox enabled and DirReqStatistics not disabled
---------------------------+------------------------------------
 Reporter:  alphawolf      |          Owner:
     Type:  defect         |         Status:  new
 Priority:  normal         |      Milestone:  Tor: 0.2.5.x-final
Component:  Tor            |        Version:  Tor: 0.2.5.4-alpha
 Keywords:  sandbox,crash  |  Actual Points:
Parent ID:                 |         Points:
---------------------------+------------------------------------
 Tor crashes @ log rotation time if sandbox is enabled and DirReqStatistics
 is not disabled.  Version is Tor 0.2.5.4-alpha-dev (git-081ff5fa83cf146a)
 on Debian Jessie.

 log:
 {{{
 May 17 06:25:03.000 [warn] sandbox_intern_string(): Bug: No interned
 sandbox parameter found for /var/lib/tor/stats
 May 17 06:25:03.000 [warn] sandbox_intern_string(): Bug: No interned
 sandbox parameter found for /var/lib/tor/stats/dirreq-stats.tmp

 ============================================================ T= 1400322303
 (Sandbox) Caught a bad syscall attempt (syscall open)
 /usr/bin/tor(+0x124e7a)[0x7f0630d98e7a]
 /lib/x86_64-linux-gnu/libpthread.so.0(open64+0x2d)[0x7f062f87a19d]
 /lib/x86_64-linux-gnu/libpthread.so.0(open64+0x2d)[0x7f062f87a19d]
 /usr/bin/tor(tor_open_cloexec+0x40)[0x7f0630d84940]
 /usr/bin/tor(start_writing_to_file+0xfb)[0x7f0630d9444b]
 /usr/bin/tor(+0x1205ab)[0x7f0630d945ab]
 /usr/bin/tor(+0x1206f8)[0x7f0630d946f8]
 /usr/bin/tor(write_to_data_subdir+0x53)[0x7f0630d32983]
 /usr/bin/tor(geoip_dirreq_stats_write+0x137)[0x7f0630d77487]
 /usr/bin/tor(+0x359bc)[0x7f0630ca99bc]
 /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0x414)[0x7f0630300184]
 /usr/bin/tor(do_main_loop+0x19d)[0x7f0630caa5bd]
 /usr/bin/tor(tor_main+0x12b5)[0x7f0630cacf75]
 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f062f2deb45]
 /usr/bin/tor(+0x32e0b)[0x7f0630ca6e0b]
 }}}

 /usr/share/tor/tor-service-defaults-torrc:
 {{{
 DataDirectory /var/lib/tor
 PidFile /var/run/tor/tor.pid
 RunAsDaemon 1
 User debian-tor

 ControlSocket /var/run/tor/control
 ControlSocketsGroupWritable 1

 CookieAuthentication 1
 CookieAuthFileGroupReadable 1
 CookieAuthFile /var/run/tor/control.authcookie

 Log notice file /var/log/tor/log
 }}}

 torrc: (trimmed for brevity...)
 {{{
 ORPort 443 NoListen
 ORPort 9001 NoAdvertise

 DirPort 80 NoListen
 DirPort 9030 NoAdvertise
 # DirReqStatistics 0

 ExitPolicy reject *:* # no exits allowed

 Sandbox 1
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12035>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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