BUG #17217: PANIC: stuck spinlock detected at LockBufHdr, bufmgr.c:4297

The following bug has been logged on the website:

Bug reference:      17217
Logged by:          Jesper St John
Email address:      admin@zonezero.se
PostgreSQL version: 13.4
Operating system:   Linux (Linux 4.14.243-185.433.amzn2.x86_64)
Description:

I have an EC2 machine (m5.2xlarge) running pg_restore of 2 tables. Have done
this twice now with the same error popping up.

After a quick google, I found that if there's a problem with spinlocks,
there could be a bug hiding somewhere so that's why I'm reporting.

Nothing else seems to be a problem. I have recently upgraded this server to
13.4 from 12.something. 

Let me know if there's anything I can do.

LOG
-----------------------------------------------------------------------------------------------------
2021-10-05 13:20:28 CEST @:(382) LOG:  skipping vacuum of "<table_name>" ---
lock not available
2021-10-05 13:21:23 CEST @:(695) LOG:  skipping vacuum of "<table_name>" ---
lock not available
2021-10-05 13:22:17 CEST @:(29074) LOG:  checkpoint complete: wrote 0
buffers (0.0%); 0 WAL file(s) added, 479 removed, 2202 recycled;
write=1446.237 s, sync=0.046
 s, total=1516.318 s; sync files=109, longest=0.025 s, average=0.001 s;
distance=18306715 kB, estimate=35380631 kB
2021-10-05 13:22:25 CEST @:(925) LOG:  skipping vacuum of "<table_name>" ---
lock not available
2021-10-05 13:24:53 CEST @:(29077) LOG:  using stale statistics instead of
current ones because stats collector is not responding
2021-10-05 13:26:25 CEST @:(1012) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:26:44 CEST @:(1113) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:27:02 CEST @:(29074) LOG:  checkpoint starting: time
2021-10-05 13:29:59 CEST @:(29077) WARNING:  worker took too long to start;
canceled
2021-10-05 13:30:16 CEST @:(1185) WARNING:  autovacuum worker started
without a worker entry
2021-10-05 13:35:21 CEST @:(29077) LOG:  using stale statistics instead of
current ones because stats collector is not responding
2021-10-05 13:37:32 CEST @:(1227) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:38:00 CEST @:(29077) WARNING:  worker took too long to start;
canceled
2021-10-05 13:39:51 CEST @:(29077) WARNING:  worker took too long to start;
canceled
2021-10-05 13:40:30 CEST @:(1331) WARNING:  autovacuum worker started
without a worker entry
2021-10-05 13:41:15 CEST @:(1329) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:42:46 CEST @:(1358) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:44:11 CEST @:(1392) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:46:10 CEST @:(1472) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:46:56 CEST @:(1519) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:47:56 CEST @:(1570) LOG:  skipping vacuum of "<table_name>"
--- lock not available
2021-10-05 13:48:18 CEST @:(29075) PANIC:  stuck spinlock detected at
LockBufHdr, bufmgr.c:4297
2021-10-05 13:48:20 CEST @:(29068) LOG:  background writer process (PID
29075) was terminated by signal 6: Aborted
2021-10-05 13:48:20 CEST @:(29068) LOG:  terminating any other active server
processes
2021-10-05 13:48:20 CEST @:(29077) WARNING:  terminating connection because
of crash of another server process
2021-10-05 13:48:20 CEST @:(29077) DETAIL:  The postmaster has commanded
this server process to roll back the current transaction and exit, because
another server
process exited abnormally and possibly corrupted shared memory.
2021-10-05 13:48:20 CEST @:(29077) HINT:  In a moment you should be able to
reconnect to the database and repeat your command.


                                                 version
---------------------------------------------------------------------------------------------------------
 PostgreSQL 13.4 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5
20150623 (Red Hat 4.8.5-44), 64-bit

CONF
---------------------------------------------------------------------------------------------------------
              name               |                 current_setting
      |        source
---------------------------------+-------------------------------------------------+----------------------
 application_name                | psql
      | client
 archive_command                 | pgbackrest --stanza=*** archive-push %p
      | configuration file
 archive_mode                    | on
      | configuration file
 autovacuum_analyze_scale_factor | 0.05
      | configuration file
 autovacuum_analyze_threshold    | 50
      | configuration file
 autovacuum_freeze_max_age       | 2000000000
      | configuration file
 autovacuum_max_workers          | 6
      | configuration file
 autovacuum_naptime              | 1min
      | configuration file
 autovacuum_vacuum_cost_delay    | 20ms
      | configuration file
 autovacuum_vacuum_cost_limit    | 4000
      | configuration file
 autovacuum_vacuum_scale_factor  | 0.1
      | configuration file
 autovacuum_vacuum_threshold     | 50
      | configuration file
 autovacuum_work_mem             | 8GB
      | configuration file
 checkpoint_completion_target    | 0.8
      | configuration file
 checkpoint_timeout              | 30min
      | configuration file
 checkpoint_warning              | 20min
      | configuration file
 client_encoding                 | UTF8
      | client
 cluster_name                    | ***
     | configuration file
 cpu_tuple_cost                  | 0.1
      | configuration file
 DateStyle                       | ISO, MDY
      | configuration file
 deadlock_timeout                | 1s
      | configuration file
 default_statistics_target       | 200
      | configuration file
 default_text_search_config      | pg_catalog.english
      | configuration file
 dynamic_shared_memory_type      | posix
      | configuration file
 effective_cache_size            | 24GB
      | configuration file
 effective_io_concurrency        | 128
      | configuration file
 from_collapse_limit             | 16
      | configuration file
 geqo_threshold                  | 24
      | configuration file
 hot_standby_feedback            | on
      | configuration file
 huge_pages                      | try
      | configuration file
 jit                             | on
      | configuration file
 join_collapse_limit             | 20
      | configuration file
 lc_messages                     | en_US.UTF-8
      | configuration file
 lc_monetary                     | en_US.UTF-8
      | configuration file
 lc_numeric                      | en_US.UTF-8
      | configuration file
 lc_time                         | en_US.UTF-8
      | configuration file
 listen_addresses                | *
      | configuration file
 log_autovacuum_min_duration     | 10s
      | configuration file
 [21/202]
 log_checkpoints                 | on
      | configuration file
 log_connections                 | on
      | configuration file
 log_destination                 | stderr
      | configuration file
 log_directory                   | /var/log/postgresql
      | configuration file
 log_disconnections              | on
      | configuration file
 log_duration                    | off
      | configuration file
 log_error_verbosity             | default
      | configuration file
 log_file_mode                   | 0640
      | configuration file
 log_filename                    | postgresql-%a.log
      | configuration file
 log_line_prefix                 | %t %u@%h:%d(%p)
      | configuration file
 log_lock_waits                  | on
      | configuration file
 log_min_duration_statement      | 1h
      | configuration file
 log_rotation_age                | 1d
      | configuration file
 log_rotation_size               | 0
      | configuration file
 log_statement                   | none
      | configuration file
 log_temp_files                  | 1GB
      | configuration file
 log_truncate_on_rotation        | on
      | configuration file
 logging_collector               | on
      | configuration file
 maintenance_work_mem            | 16GB
      | configuration file
 max_connections                 | 256
      | configuration file
 max_locks_per_transaction       | 256
      | configuration file
 max_parallel_workers            | 2
      | configuration file
 max_parallel_workers_per_gather | 2
      | configuration file
 max_pred_locks_per_transaction  | 256
      | configuration file
 max_prepared_transactions       | 64
      | configuration file
 max_stack_depth                 | 2MB
      | environment variable
 max_standby_archive_delay       | 4h
      | configuration file
 max_standby_streaming_delay     | 4h
      | configuration file
 max_wal_senders                 | 12
      | configuration file
 max_wal_size                    | 64GB
      | configuration file
 max_worker_processes            | 3
      | configuration file
 min_wal_size                    | 4GB
      | configuration file
 random_page_cost                | 1
      | configuration file
 shared_buffers                  | 12GB
      | configuration file
 shared_preload_libraries        | pg_stat_statements
      | configuration file
 ssl                             | on
      | configuration file
 ssl_cert_file                   | server.crt
      | configuration file
 ssl_ciphers                     |
HIGH:+3DES:!aNULL:!SSLv2:!SSLv3:!TLSv1:!TLSv1.1 | configuration file
 ssl_ecdh_curve                  | prime256v1
      | configuration file
 ssl_key_file                    | server.key
      | configuration file
 ssl_prefer_server_ciphers       | on
      | configuration file
 stats_temp_directory            | /run/postgresql
      | configuration file
 synchronous_commit              | on
      | configuration file
 TimeZone                        | Europe/Stockholm
      | configuration file
 track_activities                | on
      | configuration file
 track_activity_query_size       | 8kB
      | configuration file
 track_counts                    | on
      | configuration file
 track_functions                 | pl
      | configuration file
 track_io_timing                 | on
      | configuration file
 vacuum_freeze_min_age           | 100000
      | configuration file
 vacuum_freeze_table_age         | 1900000000
      | configuration file
 wal_buffers                     | 32MB
      | configuration file
 wal_compression                 | on
      | configuration file
 wal_keep_size                   | 8GB
      | configuration file
 wal_level                       | logical
      | configuration file
 work_mem                        | 4GB
      | configuration file