Clang Address Sanitizer (Postgres14) Detected Memory Leaks - Mailing list pgsql-hackers

Hi,

Is this something to worry about, or is it another problem with the analysis tool, that nobody cares about?

clang 10 (64 bits)

postgres 14 (latest)

31422==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 4560 byte(s) in 1 object(s) allocated from:
    #0 0x50e33d in malloc (/usr/src/postgres/tmp_install/usr/local/pgsql/bin/postgres+0x50e33d)
    #1 0x186d52f in ConvertTimeZoneAbbrevs /usr/src/postgres/src/backend/utils/adt/datetime.c:4511:8
    #2 0x1d9b5e9 in load_tzoffsets /usr/src/postgres/src/backend/utils/misc/tzparser.c:465:12
    #3 0x1d8ca3f in check_timezone_abbreviations /usr/src/postgres/src/backend/utils/misc/guc.c:11389:11
    #4 0x1d6a398 in call_string_check_hook /usr/src/postgres/src/backend/utils/misc/guc.c:11056:7
    #5 0x1d68f29 in parse_and_validate_value /usr/src/postgres/src/backend/utils/misc/guc.c:6870:10
    #6 0x1d6567d in set_config_option /usr/src/postgres/src/backend/utils/misc/guc.c:7473:11
    #7 0x1d7f8f4 in ProcessGUCArray /usr/src/postgres/src/backend/utils/misc/guc.c:10608:10
    #8 0x9d0c8d in ApplySetting /usr/src/postgres/src/backend/catalog/pg_db_role_setting.c:256:4
    #9 0x1d4ad93 in process_settings /usr/src/postgres/src/backend/utils/init/postinit.c:1174:2
    #10 0x1d48e39 in InitPostgres /usr/src/postgres/src/backend/utils/init/postinit.c:1059:2
    #11 0x14a2c1a in BackgroundWorkerInitializeConnectionByOid /usr/src/postgres/src/backend/postmaster/postmaster.c:5758:2
    #12 0x853feb in ParallelWorkerMain /usr/src/postgres/src/backend/access/transam/parallel.c:1373:2
    #13 0x146e5fb in StartBackgroundWorker /usr/src/postgres/src/backend/postmaster/bgworker.c:813:2
    #14 0x14af69b in do_start_bgworker /usr/src/postgres/src/backend/postmaster/postmaster.c:5879:4
    #15 0x14a1487 in maybe_start_bgworkers /usr/src/postgres/src/backend/postmaster/postmaster.c:6104:9
    #16 0x149e5aa in sigusr1_handler /usr/src/postgres/src/backend/postmaster/postmaster.c:5269:3
    #17 0x7fcffa75a3bf  (/lib/x86_64-linux-gnu/libpthread.so.0+0x153bf)
    #18 0x149d655 in PostmasterMain /usr/src/postgres/src/backend/postmaster/postmaster.c:1414:11
    #19 0x108402e in main /usr/src/postgres/src/backend/main/main.c:209:3
    #20 0x7fcffa54e0b2 in __libc_start_main /build/glibc-YYA7BZ/glibc-2.31/csu/../csu/libc-start.c:308:16

Direct leak of 1020 byte(s) in 15 object(s) allocated from:
    #0 0x4fa6e4 in strdup (/usr/src/postgres/tmp_install/usr/local/pgsql/bin/postgres+0x4fa6e4)
    #1 0x1d6a1c7 in guc_strdup /usr/src/postgres/src/backend/utils/misc/guc.c:4889:9
    #2 0x1d7efc7 in set_config_sourcefile /usr/src/postgres/src/backend/utils/misc/guc.c:7696:15
    #3 0x1d7c95e in ProcessConfigFileInternal /usr/src/postgres/src/backend/utils/misc/guc-file.l:478:4
    #4 0x1d5b33f in ProcessConfigFile /usr/src/postgres/src/backend/utils/misc/guc-file.l:156:9
    #5 0x1d5ae7d in SelectConfigFiles /usr/src/postgres/src/backend/utils/misc/guc.c:5674:2
    #6 0x149b6ce in PostmasterMain /usr/src/postgres/src/backend/postmaster/postmaster.c:884:7

Ranier Vilela