[tor-bugs] #15354 [Tor]: tor dies on reload (after chaning unusual config settings)

[Tor Bug Tracker & Wiki]

#15354: tor dies on reload (after chaning unusual config settings)
-------------------------+---------------------------------
 Reporter:  cypherpunks  |          Owner:
     Type:  defect       |         Status:  new
 Priority:  normal       |      Milestone:
Component:  Tor          |        Version:  Tor: 0.2.6.4-rc
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
-------------------------+---------------------------------
 reproducer:

 start tor with the following command:
 {{{
 tor -f torrc --runasdaemon 0
 }}}

 torrc contains:
 {{{
 User debian-tor
 DataDirectory /var/lib/tor
 Log debug file /var/log/tor/log
 DisableDebuggerAttachment 0
 RunAsDaemon 1
 }}}


 modify the torrc file:
 {{{
 3,5c3
 < Log debug file /var/log/tor/log
 < DisableDebuggerAttachment 0
 < RunAsDaemon 1
 ---
 > Log notice file /var/log/tor/log
 }}}

 Send the tor process the HUP signal for reload.

 tor will die:

 {{{
 Tor 0.2.6.4-rc (git-b7090ba4fb85d8ac) died: Caught signal 11
 /usr/bin/tor(+0x11b4f7)[0x7f43001fe4f7]
 /lib/x86_64-linux-
 gnu/libpthread.so.0(pthread_mutex_lock+0x4)[0x7f42fecd8274]
 /lib/x86_64-linux-
 gnu/libpthread.so.0(pthread_mutex_lock+0x4)[0x7f42fecd8274]
 /usr/bin/tor(tor_mutex_acquire+0x1e)[0x7f43002193de]
 /usr/bin/tor(threadpool_queue_update+0x42)[0x7f4300218a72]
 /usr/bin/tor(cpuworkers_rotate_keyinfo+0x38)[0x7f43001ce498]
 /usr/bin/tor(set_options+0xf79)[0x7f43001a9499]
 /usr/bin/tor(options_init_from_string+0x31a)[0x7f43001aabfa]
 /usr/bin/tor(options_init_from_torrc+0x1d6)[0x7f43001aaf36]
 /usr/bin/tor(process_signal+0x709)[0x7f430011bff9]
 /usr/lib/x86_64-linux-
 gnu/libevent-2.0.so.5(event_base_loop+0xe35)[0x7f42ff76ca15]
 /usr/bin/tor(do_main_loop+0x194)[0x7f430011abd4]
 /usr/bin/tor(tor_main+0x16b5)[0x7f430011d9e5]
 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f42fe742b45]
 }}}



 (this is *not* related to my systemd unit file debugging - I made sure
 this is reproducible without using systemd)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15354>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online