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[tor-bugs] #33103 [Core Tor/Tor]: LeakSanitizer is kicking in with tor being on 39c5e1b84994c2f226a8530b930f215cc5ffb877 when closing Tor Browser



#33103: LeakSanitizer is kicking in with tor being on
39c5e1b84994c2f226a8530b930f215cc5ffb877 when closing Tor Browser
------------------------------+--------------------
     Reporter:  gk            |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------
 I just updated my hardened Tor Browser setup and I got LeakSanitizer
 issues when closing Tor Browser. That's with `tor` being on
 `39c5e1b84994c2f226a8530b930f215cc5ffb877`:
 {{{
 ==10555==ERROR: LeakSanitizer: detected memory leaks

 Direct leak of 6762 byte(s) in 4 object(s) allocated from:
     #0 0x7f0d81c53628 in malloc (/usr/lib/x86_64-linux-
 gnu/libasan.so.5+0x107628)
     #1 0x55863eead50a in tor_malloc_ ../src/lib/malloc/malloc.c:45
     #2 0x55863ee86121 in smartlist_join_strings2
 ../src/lib/container/smartlist.c:309
     #3 0x55863ec2bb08 in getinfo_helper_events
 ../src/feature/control/control_getinfo.c:1169
     #4 0x55863ec31d53 in handle_getinfo_helper
 ../src/feature/control/control_getinfo.c:1696
     #5 0x55863ec31d53 in handle_control_getinfo
 ../src/feature/control/control_getinfo.c:1721
     #6 0x55863ec1e092 in handle_single_control_command
 ../src/feature/control/control_cmd.c:2374
     #7 0x55863ec1e092 in handle_control_command
 ../src/feature/control/control_cmd.c:2405
     #8 0x55863ec0fa91 in connection_control_process_inbuf
 ../src/feature/control/control.c:508
     #9 0x55863eb19c21 in connection_handle_read_impl
 ../src/core/mainloop/connection.c:3737
     #10 0x55863eb19c21 in connection_handle_read
 ../src/core/mainloop/connection.c:3777
     #11 0x55863eb25ce0 in conn_read_callback
 ../src/core/mainloop/mainloop.c:892
     #12 0x7f0d819b4b0e  (/usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.7+0x23b0e)

 Direct leak of 2244 byte(s) in 12 object(s) allocated from:
     #0 0x7f0d81c53628 in malloc (/usr/lib/x86_64-linux-
 gnu/libasan.so.5+0x107628)
     #1 0x55863eead50a in tor_malloc_ ../src/lib/malloc/malloc.c:45
     #2 0x55863ee86121 in smartlist_join_strings2
 ../src/lib/container/smartlist.c:309
     #3 0x55863ed0e522 in routerstatus_format_entry
 ../src/feature/nodelist/fmt_routerstatus.c:197
     #4 0x55863ece1718 in networkstatus_getinfo_helper_single
 ../src/feature/nodelist/networkstatus.c:2353
     #5 0x55863ece1718 in getinfo_helper_networkstatus
 ../src/feature/nodelist/networkstatus.c:2694
     #6 0x55863ec31d53 in handle_getinfo_helper
 ../src/feature/control/control_getinfo.c:1696
     #7 0x55863ec31d53 in handle_control_getinfo
 ../src/feature/control/control_getinfo.c:1721
     #8 0x55863ec1e092 in handle_single_control_command
 ../src/feature/control/control_cmd.c:2374
     #9 0x55863ec1e092 in handle_control_command
 ../src/feature/control/control_cmd.c:2405
     #10 0x55863ec0fa91 in connection_control_process_inbuf
 ../src/feature/control/control.c:508
     #11 0x55863eb19c21 in connection_handle_read_impl
 ../src/core/mainloop/connection.c:3737
     #12 0x55863eb19c21 in connection_handle_read
 ../src/core/mainloop/connection.c:3777
     #13 0x55863eb25ce0 in conn_read_callback
 ../src/core/mainloop/mainloop.c:892
     #14 0x7f0d819b4b0e  (/usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.7+0x23b0e)

 Direct leak of 147 byte(s) in 2 object(s) allocated from:
     #0 0x7f0d81bde0b5 in strdup (/usr/lib/x86_64-linux-
 gnu/libasan.so.5+0x920b5)
     #1 0x55863eead7a0 in tor_strdup_ ../src/lib/malloc/malloc.c:165
     #2 0x55863ec2bdb7 in getinfo_helper_events
 ../src/feature/control/control_getinfo.c:1289
     #3 0x55863ec31d53 in handle_getinfo_helper
 ../src/feature/control/control_getinfo.c:1696
     #4 0x55863ec31d53 in handle_control_getinfo
 ../src/feature/control/control_getinfo.c:1721
     #5 0x55863ec1e092 in handle_single_control_command
 ../src/feature/control/control_cmd.c:2374
     #6 0x55863ec1e092 in handle_control_command
 ../src/feature/control/control_cmd.c:2405
     #7 0x55863ec0fa91 in connection_control_process_inbuf
 ../src/feature/control/control.c:508
     #8 0x55863eb19c21 in connection_handle_read_impl
 ../src/core/mainloop/connection.c:3737
     #9 0x55863eb19c21 in connection_handle_read
 ../src/core/mainloop/connection.c:3777
     #10 0x55863eb25ce0 in conn_read_callback
 ../src/core/mainloop/mainloop.c:892
     #11 0x7f0d819b4b0e  (/usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.7+0x23b0e)

 Direct leak of 36 byte(s) in 12 object(s) allocated from:
     #0 0x7f0d81bde0b5 in strdup (/usr/lib/x86_64-linux-
 gnu/libasan.so.5+0x920b5)
     #1 0x55863eead7a0 in tor_strdup_ ../src/lib/malloc/malloc.c:165
     #2 0x55863ec34aba in getinfo_helper_geoip
 ../src/feature/control/getinfo_geoip.c:51
     #3 0x55863ec31d53 in handle_getinfo_helper
 ../src/feature/control/control_getinfo.c:1696
     #4 0x55863ec31d53 in handle_control_getinfo
 ../src/feature/control/control_getinfo.c:1721
     #5 0x55863ec1e092 in handle_single_control_command
 ../src/feature/control/control_cmd.c:2374
     #6 0x55863ec1e092 in handle_control_command
 ../src/feature/control/control_cmd.c:2405
     #7 0x55863ec0fa91 in connection_control_process_inbuf
 ../src/feature/control/control.c:508
     #8 0x55863eb19c21 in connection_handle_read_impl
 ../src/core/mainloop/connection.c:3737
     #9 0x55863eb19c21 in connection_handle_read
 ../src/core/mainloop/connection.c:3777
     #10 0x55863eb25ce0 in conn_read_callback
 ../src/core/mainloop/mainloop.c:892
     #11 0x7f0d819b4b0e  (/usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.7+0x23b0e)

 Direct leak of 17 byte(s) in 1 object(s) allocated from:
     #0 0x7f0d81c53628 in malloc (/usr/lib/x86_64-linux-
 gnu/libasan.so.5+0x107628)
     #1 0x55863eead50a in tor_malloc_ ../src/lib/malloc/malloc.c:45
     #2 0x55863ee86121 in smartlist_join_strings2
 ../src/lib/container/smartlist.c:309
     #3 0x55863ec2ceca in getinfo_helper_listeners
 ../src/feature/control/control_getinfo.c:298
     #4 0x55863ec31d53 in handle_getinfo_helper
 ../src/feature/control/control_getinfo.c:1696
     #5 0x55863ec31d53 in handle_control_getinfo
 ../src/feature/control/control_getinfo.c:1721
     #6 0x55863ec1e092 in handle_single_control_command
 ../src/feature/control/control_cmd.c:2374
     #7 0x55863ec1e092 in handle_control_command
 ../src/feature/control/control_cmd.c:2405
     #8 0x55863ec0fa91 in connection_control_process_inbuf
 ../src/feature/control/control.c:508
     #9 0x55863eb19c21 in connection_handle_read_impl
 ../src/core/mainloop/connection.c:3737
     #10 0x55863eb19c21 in connection_handle_read
 ../src/core/mainloop/connection.c:3777
     #11 0x55863eb25ce0 in conn_read_callback
 ../src/core/mainloop/mainloop.c:892
     #12 0x7f0d819b4b0e  (/usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.7+0x23b0e)

 SUMMARY: AddressSanitizer: 9206 byte(s) leaked in 31 allocation(s).
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33103>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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