commit bec776480d673dc85afd2a3db052f3d8eb81a5c4 Author: Andrea Shepard andrea@torproject.org Date: Sat Oct 6 05:45:24 2012 -0700

Don't remove circuitmux hash table entries in circuitmux_detach_circuit() until after circuitmux_make_circuit_inactive() --- src/or/circuitmux.c | 12 +++++++++--- 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/or/circuitmux.c b/src/or/circuitmux.c index 44d736a..6a6fa6d 100644 --- a/src/or/circuitmux.c +++ b/src/or/circuitmux.c @@ -1019,7 +1019,7 @@ circuitmux_detach_circuit(circuitmux_t *cmux, circuit_t *circ) if (circ->n_chan) { search.chan_id = circ->n_chan->global_identifier; search.circ_id = circ->n_circ_id; - hashent = HT_REMOVE(chanid_circid_muxinfo_map, cmux->chanid_circid_map, + hashent = HT_FIND(chanid_circid_muxinfo_map, cmux->chanid_circid_map, &search); last_searched_direction = CELL_DIRECTION_OUT; } @@ -1030,7 +1030,7 @@ circuitmux_detach_circuit(circuitmux_t *cmux, circuit_t *circ) search.circ_id = TO_OR_CIRCUIT(circ)->p_circ_id; if (TO_OR_CIRCUIT(circ)->p_chan) { search.chan_id = TO_OR_CIRCUIT(circ)->p_chan->global_identifier; - hashent = HT_REMOVE(chanid_circid_muxinfo_map, + hashent = HT_FIND(chanid_circid_muxinfo_map, cmux->chanid_circid_map, &search); last_searched_direction = CELL_DIRECTION_IN; @@ -1038,7 +1038,10 @@ circuitmux_detach_circuit(circuitmux_t *cmux, circuit_t *circ) } }

- /* If hashent isn't NULL, we just removed it from the map */ + /* + * If hashent isn't NULL, we have a circuit to detach; don't remove it from + * the map until later of circuitmux_make_circuit_inactive() breaks. + */ if (hashent) { /* Update counters */ --(cmux->n_circuits); @@ -1068,6 +1071,9 @@ circuitmux_detach_circuit(circuitmux_t *cmux, circuit_t *circ) if (last_searched_direction == CELL_DIRECTION_OUT) circ->n_mux = NULL; else TO_OR_CIRCUIT(circ)->p_mux = NULL;

+ /* Now remove it from the map */ + HT_REMOVE(chanid_circid_muxinfo_map, cmux->chanid_circid_map, hashent); + /* Free the hash entry */ tor_free(hashent); }