[tor-bugs] #19557 [Core Tor/Tor]: sandboxing crash while writing stats

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#19557: sandboxing crash while writing stats
------------------------------+--------------------------------
     Reporter:  weasel        |      Owner:
         Type:  defect        |     Status:  new
     Priority:  High          |  Milestone:  Tor: 0.2.8.x-final
    Component:  Core Tor/Tor  |    Version:  Tor: 0.2.8.4-rc
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------
 With 19556 fixed, Tor now crashes while trying to write stats.
 {{{
 (Sandbox) Caught a bad syscall attempt (syscall open)
 /usr/bin/tor(+0x150566)[0x7f5547fe3566]
 /lib/x86_64-linux-gnu/libpthread.so.0(open64+0x2d)[0x7f55466611ed]
 /lib/x86_64-linux-gnu/libpthread.so.0(open64+0x2d)[0x7f55466611ed]
 /usr/bin/tor(tor_open_cloexec+0x40)[0x7f5547fcb410]
 /usr/bin/tor(start_writing_to_file+0xf2)[0x7f5547fdd0f2]
 /usr/bin/tor(+0x14a25b)[0x7f5547fdd25b]
 /usr/bin/tor(+0x14a3a8)[0x7f5547fdd3a8]
 /usr/bin/tor(write_to_data_subdir+0x4f)[0x7f5547f711ef]
 /usr/bin/tor(rep_hist_hs_stats_write+0x185)[0x7f5547f0b5b5]
 /usr/bin/tor(+0x3e318)[0x7f5547ed1318]
 /usr/bin/tor(+0x576e0)[0x7f5547eea6e0]
 /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0x7fc)[0x7f554751c3dc]
 /usr/bin/tor(do_main_loop+0x274)[0x7f5547ed4ad4]
 /usr/bin/tor(tor_main+0x1b45)[0x7f5547ed81e5]
 /usr/bin/tor(main+0x19)[0x7f5547ed05c9]
 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f55460c4b45]
 /usr/bin/tor(+0x3d619)[0x7f5547ed0619]
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19557>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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