Dear Tom,
Think I was able to get a gdb stack trace. Logs attached.
PostgreSQL 13.2 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-12), 64-bit)
2021-05-14 06:10:54 UTC [22258]: user=,db=,app=,client= LOG: server process (PID 22273) was terminated by signal 11: Segmentation fault
2021-05-14 06:10:54 UTC [22258]: user=,db=,app=,client= DETAIL: Failed process was running: REFRESH MATERIALIZED VIEW CONCURRENTLY project.product_master_mv
2021-05-14 06:10:54 UTC [22258]: user=,db=,app=,client= LOG: terminating any other active server process
sudo -u postgres gdb -q -c /usr/local/pgsql/data/core.postgres.22273.pg13_testdb.1620972642 /usr/local/pgsql/bin/postgres
Reading symbols from /usr/local/pgsql/bin/postgres...(no debugging symbols found)...done.
[New LWP 22273]
warning: Corrupted shared library list: 0x7ffa44ed0680 != 0x68000000000021f
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `postgres: servlet staging 172.31.35.223(23762) REFRESH MATER'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007ffa43a2c94d in __memmove_avx_unaligned_erms () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install glibc-2.26-41.amzn2.x86_64 keyutils-libs-1.5.8-3.amzn2.0.2.x86_64 krb5-libs-1.15.1-37.amzn2.2.2.x86_64 libcom_err-1.42.9-19.amzn2.x86_64 libselinux-2.5-12.amzn2.0.2.x86_64 openssl-libs-1.0.2k-19.amzn2.0.6.x86_64 pcre-8.32-17.amzn2.0.2.x86_64 zlib-1.2.7-18.amzn2.x86_64
(gdb) bt
#0 0x00007ffa43a2c94d in __memmove_avx_unaligned_erms () from /lib64/libc.so.6
#1 0x00000000004d67f5 in _bt_swap_posting ()
#2 0x00000000004d792e in _bt_insertonpg ()
#3 0x00000000004d9113 in _bt_doinsert ()
#4 0x00000000004dc1a1 in btinsert ()
#5 0x000000000060fa7f in ExecInsertIndexTuples ()
#6 0x0000000000637078 in ExecInsert ()
#7 0x00000000006379c7 in ExecModifyTable ()
#8 0x00000000006107dc in standard_ExecutorRun ()
#9 0x0000000000645695 in _SPI_execute_plan ()
#10 0x0000000000645a3c in SPI_execute ()
#11 0x00000000005c39ff in ExecRefreshMatView ()
#12 0x000000000075799d in ProcessUtilitySlow.isra.4 ()
#13 0x00000000007567ce in standard_ProcessUtility ()
#14 0x0000000000754382 in PortalRunUtility ()
#15 0x0000000000754d4d in PortalRunMulti ()
#16 0x0000000000755763 in PortalRun ()
#17 0x000000000075330b in PostgresMain ()
#18 0x00000000006e2d8a in ServerLoop ()
#19 0x00000000006e3df7 in PostmasterMain ()
#20 0x00000000004883c2 in main ()
Thanks for your support!
