Server closed the connection unexpectedly - Mailing list pgsql-bugs

From Zu-Ming Jiang
Subject Server closed the connection unexpectedly
Date
Msg-id db03c582-086d-e7cd-d4a1-3bc722f81765@inf.ethz.ch
Whole thread Raw
Responses Re: Server closed the connection unexpectedly  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-bugs
My fuzzer finds a bug in Postgres, which makes the connection closed 
unexpectedly.

--- Steps to reproduce the bug ---
1. /usr/local/pgsql/bin/psql -d postgres -c "drop database redb";
2. /usr/local/pgsql/bin/psql -d postgres -c "create database redb";
3. /usr/local/pgsql/bin/psql -d redb -f pg_testdb10_bk.sql;
4. /usr/local/pgsql/bin/psql -d redb -f unexpected.sql

pg_testdb10_bk.sql and unexpected.sql are attached.

--- Expected behavior ---
No error triggered.

--- Actual behavior ---
The test case makes the connection closed unexpectedly:

psql:unexpected.sql:39: server closed the connection unexpectedly
         This probably means the server terminated abnormally
         before or while processing the request.
psql:unexpected.sql:39: error: connection to server was lost


--- Postgres version ---
Github commit: 3f1aaaa180689f2015e7f7bd01c9be6d7a993b42
Version: PostgreSQL 16beta1 on x86_64-pc-linux-gnu, compiled by gcc 
(Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, 64-bit

--- Platform information ---
Platform: Ubuntu 20.04
Kernel: Linux 5.4.0-147-generic
Attachment

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