error “server process was terminated by signal 11: Segmentation fault” running pg_create_logical_replication_slot using pgoutput plugin - Mailing list pgsql-general

From abrahim abrahao
Subject error “server process was terminated by signal 11: Segmentation fault” running pg_create_logical_replication_slot using pgoutput plugin
Date
Msg-id 2138039822.1224213.1751997247151@mail.yahoo.com
Whole thread Raw
Responses Re: error “server process was terminated by signal 11: Segmentation fault” running pg_create_logical_replication_slot using pgoutput plugin
List pgsql-general
I got error “server process was terminated by signal 11: Segmentation fault” using pg_create_logical_replication_slot with pgoutput plugin parameter and using test_decoding worked fine, any idea that is wrong?

Note: I am using docker container and I also updated shm-size from 1024mb to 2g and I am using shared_buffers=1.5GB. 
This is a test server and there is nothing else running. IT is the first time I am working with logical replication.

See details below

postgresql.conf file:
wal_level = logical 
max_replication_slots = 10  
max_wal_senders = 20
listen_addresses = '*'


 psql -U postgres -h postgres -c "SELECT pg_create_logical_replication_slot('support7561_repslot', 'pgoutput');"
SSL SYSCALL error: EOF detected
connection to server was lost


< 2025-07-08 14:57:08.653 UTC psql postgres postgres 172.18.0.94(53414) SELECT 00000 2025-07-08 14:57:07 UTC 1096 686d31c3.448 2025-07-08 14:57:08.653 UTC > LOG:  Initializing CDC decoder
< 2025-07-08 14:57:08.653 UTC psql postgres postgres 172.18.0.94(53414) SELECT 00000 2025-07-08 14:57:07 UTC 1096 686d31c3.448 2025-07-08 14:57:08.653 UTC > STATEMENT:  SELECT pg_create_logical_replication_slot('support7561_repslot', 'pgoutput');
< 2025-07-08 14:57:08.821 UTC      00000 2025-07-08 14:55:38 UTC 923 686d316a.39b 2025-07-08 14:57:08.821 UTC > LOG:  server process (PID 1096) was terminated by signal 11: Segmentation fault
< 2025-07-08 14:57:08.821 UTC      00000 2025-07-08 14:55:38 UTC 923 686d316a.39b 2025-07-08 14:57:08.821 UTC > DETAIL:  Failed process was running: SELECT pg_create_logical_replication_slot('support7561_repslot', 'pgoutput');
< 2025-07-08 14:57:08.821 UTC      00000 2025-07-08 14:55:38 UTC 923 686d316a.39b 2025-07-08 14:57:08.821 UTC > LOG:  terminating any other active server processes
< 2025-07-08 14:57:08.829 UTC      00000 2025-07-08 14:55:38 UTC 923 686d316a.39b 2025-07-08 14:57:08.829 UTC > LOG:  all server processes terminated; reinitializing
< 2025-07-08 14:57:09.215 UTC      00000 2025-07-08 14:57:09 UTC 1098 686d31c5.44a 2025-07-08 14:57:09.215 UTC > LOG:  database system was interrupted; last known up at 2025-07-08 14:55:39 UTC
< 2025-07-08 14:57:10.037 UTC [unknown] postgres postgres 172.18.0.217(33506)  57P03 2025-07-08 14:57:10 UTC 1101 686d31c6.44d 2025-07-08 14:57:10.037 UTC > FATAL:  the database system is in recovery mode
< 2025-07-08 14:57:10.437 UTC      00000 2025-07-08 14:57:09 UTC 1098 686d31c5.44a 2025-07-08 14:57:10.437 UTC > LOG:  database system was not properly shut down; automatic recovery in progress
< 2025-07-08 14:57:10.450 UTC      00000 2025-07-08 14:57:09 UTC 1098 686d31c5.44a 2025-07-08 14:57:10.450 UTC > LOG:  redo starts at 1FB9/C0000A0
< 2025-07-08 14:57:10.456 UTC      00000 2025-07-08 14:57:09 UTC 1098 686d31c5.44a 2025-07-08 14:57:10.456 UTC > LOG:  invalid record length at 1FB9/C054DF8: wanted 24, got 0
< 2025-07-08 14:57:10.456 UTC      00000 2025-07-08 14:57:09 UTC 1098 686d31c5.44a 2025-07-08 14:57:10.456 UTC > LOG:  redo done at 1FB9/C054DC0 system usage: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s
< 2025-07-08 14:57:10.475 UTC      00000 2025-07-08 14:57:09 UTC 1099 686d31c5.44b 2025-07-08 14:57:10.475 UTC > LOG:  checkpoint starting: end-of-recovery immediate wait
< 2025-07-08 14:57:10.501 UTC      00000 2025-07-08 14:57:09 UTC 1099 686d31c5.44b 2025-07-08 14:57:10.501 UTC > LOG:  checkpoint complete: wrote 86 buffers (0.0%); 0 WAL file(s) added, 0 removed, 2 recycled; write=0.010 s, sync=0.007 s, total=0.028 s; sync files=18, longest=0.003 s, average=0.001 s; distance=339 kB, estimate=339 kB
< 2025-07-08 14:57:10.510 UTC      00000 2025-07-08 14:55:38 UTC 923 686d316a.39b 2025-07-08 14:57:10.510 UTC > LOG:  database system is ready to accept connections

 psql -U postgres -h postgres -c "SELECT pg_create_logical_replication_slot('support7561_repslot', 'test_decoding');" pg_create_logical_replication_slot
------------------------------------ (support7561_repslot,1FB9/C081668)
(1 row)

postgres@support7560_postgres:/var/lib/postgresql/15/main$ psql -U postgres -h postgres -c "SELECT slot_name, plugin, slot_type, database, active, restart_lsn, confirmed_flush_lsn FROM pg_replication_slots;"      slot_name      |    plugin     | slot_type | database | active | restart_lsn  | confirmed_flush_lsn
---------------------+---------------+-----------+----------+--------+--------------+--------------------- support7561_repslot | test_decoding | logical   | postgres | f      | 1FB9/C081630 | 1FB9/C081668


SHOW shared_buffers; shared_buffers
---------------- 1532512kB
(1 row)

postgres=# \! uname -a
Linux support7560_postgres 6.8.0-1030-gcp #32~22.04.1-Ubuntu SMP Tue Apr 29 23:17:09 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

psql -U postgres -h postgres -c "select version()"                                                               version
------------------------------------------------------------------------------------------------------------------------------------- PostgreSQL 15.13 (Ubuntu 15.13-1.pgdg24.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, 64-bit

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