Horton

Avoid SIGSEGV in pg_get_database_ddl() on NULL tablespace

Andrew Dunstan <andrew@dunslane.net>

View on postgr.es
Commit: 5642a0367c2fe69684800c5d5c5929c20d99ef72
Author: Andrew Dunstan <andrew@dunslane.net>
Date: 2026-04-30T14:14:52Z
Releases: 19 (unreleased) 
Avoid SIGSEGV in pg_get_database_ddl() on NULL tablespace

There is a narrow race in which a concurrent ALTER DATABASE ... SET
TABLESPACE moves the database off the tablespace and a DROP TABLESPACE
removes it between the syscache lookup and the catalog scan. If that
happens, output an error.

Author: Chao Li <lic@highgo.com>
Reviewed-by: Jack Bonatakis <jack@bonatak.is>
Reviewed-by: Satyanarayana Narlapuram <satyanarlapuram@gmail.com>
Reviewed-by: Japin Li <japinli@hotmail.com>
Discussion: https://postgr.es/m/573E45C1-31A4-4885-A00C-1A2171159A2A@gmail.com

Files

PathChange+/−
src/backend/utils/adt/ddlutils.c modified +7 −0

Discussion