[tor-bugs] #33503 [Core Tor/Tor]: LeakSanitizer detected memory leak with Tor 0.4.4.0-alpha-dev (git-6472d9cfdf1198cf)

[Tor Bug Tracker & Wiki]

#33503: LeakSanitizer detected memory leak with Tor 0.4.4.0-alpha-dev (git-
6472d9cfdf1198cf)
------------------------------+--------------------
     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 hit a memory leak with the latest `tor` code from `master` when using it
 in Tor Browser.
 {{{
 Direct leak of 112 byte(s) in 2 object(s) allocated from:
     #0 0x7fdee552d628 in malloc (/usr/lib/x86_64-linux-
 gnu/libasan.so.5+0x107628)
     #1 0x55e7f567b5fa in tor_malloc_ ../src/lib/malloc/malloc.c:45
     #2 0x55e7f567b690 in tor_malloc_zero_ ../src/lib/malloc/malloc.c:71
     #3 0x55e7f5478339 in cache_client_desc_new
 ../src/feature/hs/hs_cache.c:429
     #4 0x55e7f5478339 in hs_cache_store_as_client
 ../src/feature/hs/hs_cache.c:830
     #5 0x55e7f5487e50 in client_dir_fetch_200
 ../src/feature/hs/hs_client.c:1372
     #6 0x55e7f5487e50 in hs_client_dir_fetch_done
 ../src/feature/hs/hs_client.c:2264
     #7 0x55e7f54445fa in handle_response_fetch_hsdesc_v3
 ../src/feature/dirclient/dirclient.c:2776
     #8 0x55e7f54445fa in connection_dir_client_reached_eof
 ../src/feature/dirclient/dirclient.c:2202
     #9 0x55e7f54445fa in connection_dir_reached_eof
 ../src/feature/dirclient/dirclient.c:2989
     #10 0x55e7f52e5505 in connection_reached_eof
 ../src/core/mainloop/connection.c:5029
     #11 0x55e7f52e5505 in connection_handle_read_impl
 ../src/core/mainloop/connection.c:3776
     #12 0x55e7f52e5505 in connection_handle_read
 ../src/core/mainloop/connection.c:3788
     #13 0x55e7f52f18e0 in conn_read_callback
 ../src/core/mainloop/mainloop.c:892
     #14 0x7fdee528eb0e  (/usr/lib/x86_64-linux-
 gnu/libevent-2.1.so.7+0x23b0e)
 }}}
 I've attached all the direct/indirect leaks that LeakSanitizer gave me, in
 case there is more lurking.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33503>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online