(gdb) bt #0 __futex_abstimed_wait_common64 (private=, cancel=true, abstime=0x0, op=265, expected=0, futex_word=0x7fed9a8171b8) at ./nptl/futex-internal.c:57 #1 __futex_abstimed_wait_common (cancel=true, private=, abstime=0x0, clockid=0, expected=0, futex_word=0x7fed9a8171b8) at ./nptl/futex-internal.c:87 #2 __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7fed9a8171b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=) at ./nptl/futex-internal.c:139 #3 0x00007feda4674c5f in do_futex_wait (sem=sem@entry=0x7fed9a8171b8, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111 #4 0x00007feda4674cf8 in __new_sem_wait_slow64 (sem=0x7fed9a8171b8, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183 #5 0x0000561dd715f1fe in PGSemaphoreLock (sema=0x7fed9a8171b8) at pg_sema.c:327 #6 0x0000561dd722fe02 in LWLockAcquire (lock=0x7fed9ad9b4e4, mode=LW_SHARED) at lwlock.c:1318 #7 0x0000561dd71f8423 in LockBuffer (buffer=36, mode=1) at bufmgr.c:4182 #8 0x0000561dd6d4f506 in heapam_index_fetch_tuple (scan=0x561dd8cb6588, tid=0x561dd8cb64d0, snapshot=0x561dd8bfee28, slot=0x561dd8cb75a0, call_again=0x561dd8cb64d6, all_dead=0x7ffdd63842c6) at heapam_handler.c:146 #9 0x0000561dd6d6a7da in table_index_fetch_tuple (scan=0x561dd8cb6588, tid=0x561dd8cb64d0, snapshot=0x561dd8bfee28, slot=0x561dd8cb75a0, call_again=0x561dd8cb64d6, all_dead=0x7ffdd63842c6) at ../../../../src/include/access/tableam.h:1226 #10 0x0000561dd6d6bd12 in index_fetch_heap (scan=0x561dd8cb6470, slot=0x561dd8cb75a0) at indexam.c:622 #11 0x0000561dd6d6beb8 in index_getnext_slot (scan=0x561dd8cb6470, direction=ForwardScanDirection, slot=0x561dd8cb75a0) at indexam.c:682 #12 0x0000561dd6d69b49 in systable_getnext (sysscan=0x561dd8cb6358) at genam.c:512 #13 0x0000561dd7400229 in ScanPgRelation (targetRelId=1259, indexOK=true, force_non_historic=false) at relcache.c:385 #14 0x0000561dd7403c1f in RelationReloadNailed (relation=0x7feda4c05b80) at relcache.c:2381 #15 0x0000561dd7404122 in RelationClearRelation (relation=0x7feda4c05b80, rebuild=true) at relcache.c:2527 #16 0x0000561dd7403556 in RelationIdGetRelation (relationId=1259) at relcache.c:2088 #17 0x0000561dd6cd819e in relation_open (relationId=1259, lockmode=1) at relation.c:59 #18 0x0000561dd6dbaa60 in table_open (relationId=1259, lockmode=1) at table.c:43 #19 0x0000561dd74001bc in ScanPgRelation (targetRelId=56237, indexOK=true, force_non_historic=false) at relcache.c:368 #20 0x0000561dd7403884 in RelationReloadIndexInfo (relation=0x7feda4a3e978) at relcache.c:2257 #21 0x0000561dd74041a7 in RelationClearRelation (relation=0x7feda4a3e978, rebuild=true) at relcache.c:2551 #22 0x0000561dd7404a76 in RelationFlushRelation (relation=0x7feda4a3e978) at relcache.c:2829 #23 0x0000561dd7404c38 in RelationCacheInvalidateEntry (relationId=56237) at relcache.c:2900 #24 0x0000561dd73f4971 in LocalExecuteInvalidationMessage (msg=0x561dd8bfe598) at inval.c:666 #25 0x0000561dd73f46c6 in ProcessInvalidationMessages (group=0x561dd8bfe2b8, func=0x561dd73f4861 ) at inval.c:537 #26 0x0000561dd73f581e in CommandEndInvalidationMessages () at inval.c:1291 #27 0x0000561dd6dd6d4e in AtCCI_LocalCache () at xact.c:1560 #28 0x0000561dd6dd660b in CommandCounterIncrement () at xact.c:1111 #29 0x0000561dd6e333a2 in index_build (heapRelation=0x7feda4a3a2b0, indexRelation=0x7feda4a3e978, indexInfo=0x561dd8cb51b0, isreindex=false, parallel=true) at index.c:3108 #30 0x0000561dd6e2fb0f in index_create (heapRelation=0x7feda4a3a2b0, indexRelationName=0x7ffdd6384f00 "pg_toast_56233_index", indexRelationId=56237, parentIndexRelid=0, parentConstraintId=0, relFileNode=0, indexInfo=0x561dd8cb51b0, indexColNames=0x561dd8ca1010, accessMethodObjectId=403, tableSpaceId=0, collationObjectId=0x7ffdd6384e60, classObjectId=0x7ffdd6384e68, coloptions=0x7ffdd6384e5c, reloptions=0, flags=1, constr_flags=0, allow_system_table_mods=true, is_internal=true, constraintId=0x0) at index.c:1254 #31 0x0000561dd6e676b7 in create_toast_table (rel=0x7feda4c1b140, toastOid=0, toastIndexOid=0, reloptions=0, lockmode=8, check=false, OIDOldToast=0) at toasting.c:326 #32 0x0000561dd6e66eec in CheckAndCreateToastTable (relOid=56233, reloptions=0, lockmode=8, check=false, OIDOldToast=0) at toasting.c:90 #33 0x0000561dd6e66e85 in NewRelationCreateToastTable (relOid=56233, reloptions=0) at toasting.c:77 #34 0x0000561dd7251db9 in ProcessUtilitySlow (pstate=0x561dd8c91610, pstmt=0x561dd8bd5c40, queryString=0x561dd8bd4a40 "CREATE TABLE t70 (a int, b text);", context=PROCESS_UTILITY_TOPLEVEL, params=0x0, queryEnv=0x0, dest=0x561dd8bd5d30, qc=0x7ffdd63857b0) at utility.c:1199 #35 0x0000561dd7251a54 in standard_ProcessUtility (pstmt=0x561dd8bd5c40, queryString=0x561dd8bd4a40 "CREATE TABLE t70 (a int, b text);", readOnlyTree=false, context=PROCESS_UTILITY_TOPLEVEL, params=0x0, queryEnv=0x0, dest=0x561dd8bd5d30, qc=0x7ffdd63857b0) at utility.c:1074 #36 0x0000561dd7250992 in ProcessUtility (pstmt=0x561dd8bd5c40, queryString=0x561dd8bd4a40 "CREATE TABLE t70 (a int, b text);", readOnlyTree=false, context=PROCESS_UTILITY_TOPLEVEL, params=0x0, queryEnv=0x0, dest=0x561dd8bd5d30, qc=0x7ffdd63857b0) at utility.c:530 #37 0x0000561dd724f23e in PortalRunUtility (portal=0x561dd8c45c60, pstmt=0x561dd8bd5c40, isTopLevel=true, setHoldSnapshot=false, dest=0x561dd8bd5d30, qc=0x7ffdd63857b0) at pquery.c:1158 #38 0x0000561dd724f4c9 in PortalRunMulti (portal=0x561dd8c45c60, isTopLevel=true, setHoldSnapshot=false, dest=0x561dd8bd5d30, altdest=0x561dd8bd5d30, qc=0x7ffdd63857b0) at pquery.c:1315 #39 0x0000561dd724e8f5 in PortalRun (portal=0x561dd8c45c60, count=9223372036854775807, isTopLevel=true, run_once=true, dest=0x561dd8bd5d30, altdest=0x561dd8bd5d30, qc=0x7ffdd63857b0) at pquery.c:791 #40 0x0000561dd7247314 in exec_simple_query (query_string=0x561dd8bd4a40 "CREATE TABLE t70 (a int, b text);") at postgres.c:1254 #41 0x0000561dd724c5ef in PostgresMain (dbname=0x561dd8c03ae0 "postgres", username=0x561dd8c03ab8 "postgres") at postgres.c:4686 #42 0x0000561dd7170ac7 in BackendRun (port=0x561dd8bfc5b0) at postmaster.c:4514 #43 0x0000561dd717034e in BackendStartup (port=0x561dd8bfc5b0) at postmaster.c:4242 #44 0x0000561dd716c2db in ServerLoop () at postmaster.c:1809 #45 0x0000561dd716ba38 in PostmasterMain (argc=1, argv=0x561dd8bcec10) at postmaster.c:1481 #46 0x0000561dd705e929 in main (argc=1, argv=0x561dd8bcec10) at main.c:202