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Re: [tor-bugs] #3367 [Tor Client]: Tor 0.2.3.x segfaults on SIGNAL TERM (was: Tor 0.2.3.x segfaults on exit)
#3367: Tor 0.2.3.x segfaults on SIGNAL TERM
------------------------+---------------------------------------------------
Reporter: rransom | Owner: rransom
Type: defect | Status: new
Priority: major | Milestone: Tor: 0.2.3.x-final
Component: Tor Client | Version:
Keywords: | Parent:
Points: | Actualpoints:
------------------------+---------------------------------------------------
Comment(by rransom):
{{{
(gdb) bt
#0 0x0000000000450f65 in flush_buf (s=11, buf=0x0, sz=0,
buf_flushlen=0x8026d20f0) at buffers.c:828
#1 0x0000000000476168 in connection_handle_write (conn=0x8026d20c0,
force=1)
at connection.c:3257
#2 0x0000000000487b2b in handle_control_signal (conn=0x8026d20c0,
len=Variable "len" is not available.
)
at control.c:1282
#3 0x000000000048a69f in connection_control_process_inbuf
(conn=0x8026d20c0)
at control.c:3171
#4 0x000000000047553d in connection_handle_read_cb (bufev=Variable
"bufev" is not available.
)
at connection.c:2955
#5 0x0000000800ab1a8b in bufferevent_run_deferred_callbacks_locked ()
from /usr/local/lib/event2/libevent-2.0.so.5
#6 0x0000000800aaa2c1 in event_base_loop ()
from /usr/local/lib/event2/libevent-2.0.so.5
#7 0x0000000000409e33 in do_main_loop () at main.c:1789
#8 0x000000000040a0c5 in tor_main (argc=3, argv=Variable "argv" is not
available.
) at main.c:2464
#9 0x0000000000408d0e in _start ()
}}}
I ended Tor by sending the `SIGNAL TERM` control-port command, which is
exactly how Vidalia would have ended my Tor instance on Windows.
I just sent `SIGNAL TERM` again, with the `SIGNAL` control-port event
enabled, and Tor segfaulted before my control-port client received the
`250 OK` response:
{{{
signal term
% Connection to mytorctl closed by foreign host.
}}}
As you can see from the backtrace, I configured Tor with `--enable-
bufferevents`. This crash occurred on branch
`git://git.torproject.org/rransom/tor.git loud-hs-serv-pk-operations`
(closest to commit 9ac2f63e0f3f1fd333b23ee6e6c02ae7cf0f71d2 (âUnbreak the
buildâ) on master).
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3367#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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