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[tor-bugs] #3213 [Tor Bridge]: seg fault in 0.2.2.26-beta when adding bridges
#3213: seg fault in 0.2.2.26-beta when adding bridges
------------------------+---------------------------------------------------
Reporter: arma | Owner:
Type: defect | Status: new
Priority: major | Milestone: Tor: 0.2.2.x-final
Component: Tor Bridge | Version:
Keywords: | Parent:
Points: | Actualpoints:
------------------------+---------------------------------------------------
First start your Tor client, without bridges configured.
Then connect to the control port, and
authenticate
setconf bridge=1 usebridge=128.31.0.34:9101
Then wait until your Tor fetches moria1's descriptor
{{{
May 17 19:32:47.352 [notice] no known bridge descriptors running yet;
stalling
May 17 19:32:47.352 [notice] Our directory information is no longer up-to-
date enough to build circuits: No live bridge descriptors.
May 17 19:33:34.711 [notice] Learned fingerprint
9695DFC35FFEB861329B9F1AB04C46397020CE31 for bridge 128.31.0.34:9101
May 17 19:33:35.054 [notice] new bridge descriptor 'moria1' (fresh)
May 17 19:33:35.057 [notice] We now have enough directory information to
build circuits.
}}}
Soon after, it will refetch a general-purpose descriptor for moria1 (see
#1776 I think):
{{{
May 17 19:33:45.651 [notice] no known bridge descriptors running yet;
stalling
May 17 19:33:45.651 [notice] Our directory information is no longer up-to-
date enough to build circuits: No live bridge descriptors.
May 17 19:33:45.651 [notice] I learned some more directory information,
but not enough to build a circuit: No live bridge descriptors.
}}}
Then setconf usebridge=0
{{{
Segmentation fault (core dumped)
}}}
{{{
#0 tor_memeq (a=<value optimized out>, b=<value optimized out>,
sz=<value optimized out>) at di_ops.c:104
#1 0x00000000004548f3 in get_configured_bridge_by_addr_port_digest (
addr=0x7fff880414a0, port=9101, digest=0x0) at circuitbuild.c:4542
#2 0x000000000045db18 in bridge_add_from_config (addr=0x7fff880414a0,
port=<value optimized out>, digest=0x0) at circuitbuild.c:4593
#3 0x0000000000468770 in parse_bridge_line (line=<value optimized out>,
validate_only=<value optimized out>) at config.c:4446
#4 0x000000000046e2f2 in options_act (new_val=<value optimized out>,
msg=0x7fff88041690) at config.c:1184
#5 set_options (new_val=<value optimized out>, msg=0x7fff88041690)
at config.c:667
#6 0x00000000004704eb in options_trial_assign (list=0x2057cc0,
use_defaults=0, clear_first=1, msg=0x7fff88041690) at config.c:2251
#7 0x000000000048630f in control_setconf_helper (conn=0x202cad0,
len=<value optimized out>, body=<value optimized out>, use_defaults=0)
at control.c:760
#8 0x0000000000489a90 in handle_control_resetconf (
conn=<value optimized out>) at control.c:807
#9 connection_control_process_inbuf (conn=<value optimized out>)
at control.c:3005
#10 0x0000000000476d89 in connection_handle_read_impl (conn=0x202cad0)
at connection.c:2510
#11 connection_handle_read (conn=0x202cad0) at connection.c:2550
#12 0x000000000040a156 in conn_read_callback (fd=<value optimized out>,
event=<value optimized out>, _conn=0x202cad0) at main.c:514
#13 0x00007f182cd84344 in event_base_loop () from
/usr/lib/libevent-1.4.so.2
#14 0x000000000040aea1 in do_main_loop () at main.c:1559
#15 0x000000000040c18b in tor_main (argc=<value optimized out>,
argv=0x7fff88041af8) at main.c:2221
#16 0x00007f182c000c4d in __libc_start_main () from /lib/libc.so.6
#17 0x0000000000407af9 in _start ()
}}}
{{{
(gdb) up
#1 0x00000000004548f3 in get_configured_bridge_by_addr_port_digest (
addr=0x7fff880414a0, port=9101, digest=0x0) at circuitbuild.c:4542
4542 if (tor_memeq(bridge->identity, digest, DIGEST_LEN))
}}}
digest is null
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3213>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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