Memory overflow

[mfundul]

Relevant system information:
Github action: https://github.com/timescale/timescaledb/runs/2888688560

Describe the bug

==postgres==20141==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x619000102680 at pc 0x55ca8235cf6a bp 0x7ffe33349460 sp 0x7ffe33348c08
READ of size 64 at 0x619000102680 thread T0
    #0 0x55ca8235cf69 in memcpy (/home/runner/postgresql/bin/postgres+0x2612f69)
    #1 0x55ca8244ab20 in memcpy /usr/include/x86_64-linux-gnu/bits/string_fortified.h:34
    #2 0x55ca8244ab20 in fill_val /home/runner/pgbuild/src/backend/access/common/heaptuple.c:287
    #3 0x55ca8244ece5 in heap_fill_tuple /home/runner/pgbuild/src/backend/access/common/heaptuple.c:336
    #4 0x55ca8245380a in heap_form_tuple /home/runner/pgbuild/src/backend/access/common/heaptuple.c:1090
    #5 0x55ca8245513b in heap_modify_tuple /home/runner/pgbuild/src/backend/access/common/heaptuple.c:1153
    #6 0x7f30a39a2897 in ts_hypertable_compression_rename_column /home/runner/work/timescaledb/timescaledb/src/hypertable_compression.c:197
    #7 0x7f30a31352bd in tsl_process_compress_table_rename_column /home/runner/work/timescaledb/timescaledb/tsl/src/compression/create.c:1093
    #8 0x7f30a30e9e54 in tsl_process_rename_cmd /home/runner/work/timescaledb/timescaledb/tsl/src/process_utility.c:53
    #9 0x7f30a39e0396 in process_rename_column /home/runner/work/timescaledb/timescaledb/src/process_utility.c:1626
    #10 0x7f30a39ed908 in process_rename /home/runner/work/timescaledb/timescaledb/src/process_utility.c:1812
    #11 0x7f30a39e1c58 in process_ddl_command_start /home/runner/work/timescaledb/timescaledb/src/process_utility.c:3747
    #12 0x7f30a39ede36 in timescaledb_ddl_command_start /home/runner/work/timescaledb/timescaledb/src/process_utility.c:3982
    #13 0x55ca835eaddf in ProcessUtility /home/runner/pgbuild/src/backend/tcop/utility.c:520
    #14 0x55ca835dd475 in PortalRunUtility /home/runner/pgbuild/src/backend/tcop/pquery.c:1157
    #15 0x55ca835e09fa in PortalRunMulti /home/runner/pgbuild/src/backend/tcop/pquery.c:1303
    #16 0x55ca835e4730 in PortalRun /home/runner/pgbuild/src/backend/tcop/pquery.c:779
    #17 0x55ca835da9e8 in exec_execute_message /home/runner/pgbuild/src/backend/tcop/postgres.c:2195
    #18 0x55ca835dc5fc in PostgresMain /home/runner/pgbuild/src/backend/tcop/postgres.c:4390
    #19 0x55ca83349429 in BackendRun /home/runner/pgbuild/src/backend/postmaster/postmaster.c:4526
    #20 0x55ca83354533 in BackendStartup /home/runner/pgbuild/src/backend/postmaster/postmaster.c:4210
    #21 0x55ca833552b2 in ServerLoop /home/runner/pgbuild/src/backend/postmaster/postmaster.c:1739
    #22 0x55ca8335781b in PostmasterMain /home/runner/pgbuild/src/backend/postmaster/postmaster.c:1412
    #23 0x55ca82f5a30b in main /home/runner/pgbuild/src/backend/main/main.c:210
    #24 0x7f30b14b90b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
    #25 0x55ca8234646d in _start (/home/runner/postgresql/bin/postgres+0x25fc46d)

0x619000102680 is located 0 bytes to the right of 1024-byte region [0x619000102280,0x619000102680)
allocated by thread T0 here:
    #0 0x55ca823d2da7 in malloc (/home/runner/postgresql/bin/postgres+0x2688da7)
    #1 0x55ca83bad873 in AllocSetContextCreateInternal /home/runner/pgbuild/src/backend/utils/mmgr/aset.c:468
    #2 0x55ca83aaaa83 in BuildCachedPlan /home/runner/pgbuild/src/backend/utils/cache/plancache.c:948
    #3 0x55ca83aac098 in GetCachedPlan /home/runner/pgbuild/src/backend/utils/cache/plancache.c:1170
    #4 0x55ca835d8982 in exec_bind_message /home/runner/pgbuild/src/backend/tcop/postgres.c:1965
    #5 0x55ca835dc5ac in PostgresMain /home/runner/pgbuild/src/backend/tcop/postgres.c:4373
    #6 0x55ca83349429 in BackendRun /home/runner/pgbuild/src/backend/postmaster/postmaster.c:4526
    #7 0x55ca83354533 in BackendStartup /home/runner/pgbuild/src/backend/postmaster/postmaster.c:4210
    #8 0x55ca833552b2 in ServerLoop /home/runner/pgbuild/src/backend/postmaster/postmaster.c:1739
    #9 0x55ca8335781b in PostmasterMain /home/runner/pgbuild/src/backend/postmaster/postmaster.c:1412
    #10 0x55ca82f5a30b in main /home/runner/pgbuild/src/backend/main/main.c:210
    #11 0x7f30b14b90b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)