Found while investigating legacy/trac#33006: ``` ================================================================= ==180005==ERROR: LeakSanitizer: detected memory leaks Direct leak of 32 byte(s) in 1 object(s) allocated from: #0 0x7fb54c5cdc58 in __interceptor_malloc (/lib64/libasan.so.5+0x10dc58) #1 0x55a4af274f3a in tor_malloc_ src/lib/malloc/malloc.c:45 #2 0x55a4af274fd0 in tor_malloc_zero_ src/lib/malloc/malloc.c:71 #3 0x55a4af2371ca in config_line_append src/lib/encoding/confline.c:40 #4 0x55a4aeffaec7 in control_reply_add_one_kv src/feature/control/control_proto.c:345 #5 0x55a4aefdd2ae in handle_control_getconf src/feature/control/control_cmd.c:307 #6 0x55a4aefe54b2 in handle_single_control_command src/feature/control/control_cmd.c:2376 #7 0x55a4aefe54b2 in handle_control_command src/feature/control/control_cmd.c:2407 #8 0x55a4aefd6e01 in connection_control_process_inbuf src/feature/control/control.c:508 #9 0x55a4aeee0e01 in connection_handle_read_impl src/core/mainloop/connection.c:3737 #10 0x55a4aeee0e01 in connection_handle_read src/core/mainloop/connection.c:3777 #11 0x55a4aeeecf00 in conn_read_callback src/core/mainloop/mainloop.c:892 #12 0x7fb54c32abb6 (/lib64/libevent-2.1.so.6+0x25bb6) Indirect leak of 26 byte(s) in 1 object(s) allocated from: #0 0x7fb54c55652d in strdup (/lib64/libasan.so.5+0x9652d) #1 0x55a4af2751d0 in tor_strdup_ src/lib/malloc/malloc.c:165 #2 0x55a4af2371d5 in config_line_append src/lib/encoding/confline.c:41 #3 0x55a4aeffaec7 in control_reply_add_one_kv src/feature/control/control_proto.c:345 #4 0x55a4aefdd2ae in handle_control_getconf src/feature/control/control_cmd.c:307 #5 0x55a4aefe54b2 in handle_single_control_command src/feature/control/control_cmd.c:2376 #6 0x55a4aefe54b2 in handle_control_command src/feature/control/control_cmd.c:2407 #7 0x55a4aefd6e01 in connection_control_process_inbuf src/feature/control/control.c:508 #8 0x55a4aeee0e01 in connection_handle_read_impl src/core/mainloop/connection.c:3737 #9 0x55a4aeee0e01 in connection_handle_read src/core/mainloop/connection.c:3777 #10 0x55a4aeeecf00 in conn_read_callback src/core/mainloop/mainloop.c:892 #11 0x7fb54c32abb6 (/lib64/libevent-2.1.so.6+0x25bb6) Indirect leak of 7 byte(s) in 1 object(s) allocated from: #0 0x7fb54c55652d in strdup (/lib64/libasan.so.5+0x9652d) #1 0x55a4af2751d0 in tor_strdup_ src/lib/malloc/malloc.c:165 #2 0x55a4af2371f5 in config_line_append src/lib/encoding/confline.c:42 #3 0x55a4aeffaec7 in control_reply_add_one_kv src/feature/control/control_proto.c:345 #4 0x55a4aefdd2ae in handle_control_getconf src/feature/control/control_cmd.c:307 #5 0x55a4aefe54b2 in handle_single_control_command src/feature/control/control_cmd.c:2376 #6 0x55a4aefe54b2 in handle_control_command src/feature/control/control_cmd.c:2407 #7 0x55a4aefd6e01 in connection_control_process_inbuf src/feature/control/control.c:508 #8 0x55a4aeee0e01 in connection_handle_read_impl src/core/mainloop/connection.c:3737 #9 0x55a4aeee0e01 in connection_handle_read src/core/mainloop/connection.c:3777 #10 0x55a4aeeecf00 in conn_read_callback src/core/mainloop/mainloop.c:892 #11 0x7fb54c32abb6 (/lib64/libevent-2.1.so.6+0x25bb6) SUMMARY: AddressSanitizer: 65 byte(s) leaked in 3 allocation(s). Exit code was 1 success (15.21s) ```