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Fix lookup error in extended stats ownership check 

When an ownership check on extended statistics object failed, the code
was calling aclcheck_error_type to report the failure, which is clearly
wrong, resulting in cache lookup errors. Fix by calling aclcheck_error.

This issue exists since the introduction of extended statistics, so
backpatch all the way back to PostgreSQL 10. It went unnoticed because
there were no tests triggering the error, so add one.

Reported-by: Mark Dilger
Backpatch-through: 10, where extended stats were introduced
Discussion: https://postgr.es/m/1F238937-7CC2-4703-A1B1-6DC225B8978A%40enterprisedb.com
This commit is contained in:
Tomas Vondra 2021-08-31 18:03:05 +02:00
parent 983d7033df
commit a371a5ba34
3 changed files with 22 additions and 1 deletions
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3
src/backend/catalog/objectaddress.c
View File

@ -2571,7 +2571,8 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address,
break;
case OBJECT_STATISTIC_EXT:
if (!pg_statistics_object_ownercheck(address.objectId, roleid))
aclcheck_error_type(ACLCHECK_NOT_OWNER, address.objectId);
aclcheck_error(ACLCHECK_NOT_OWNER, objtype,
NameListToString(castNode(List, object)));
break;
default:
elog(ERROR, "unrecognized object type: %d",

11
src/test/regress/expected/stats_ext.out
View File

@ -67,6 +67,17 @@ DROP TABLE ext_stats_test;
-- Ensure stats are dropped sanely, and test IF NOT EXISTS while at it
CREATE TABLE ab1 (a INTEGER, b INTEGER, c INTEGER);
CREATE STATISTICS IF NOT EXISTS ab1_a_b_stats ON a, b FROM ab1;
COMMENT ON STATISTICS ab1_a_b_stats IS 'new comment';
CREATE ROLE temp_role;
SET SESSION AUTHORIZATION temp_role;
COMMENT ON STATISTICS ab1_a_b_stats IS 'changed comment';
ERROR: must be owner of statistics object ab1_a_b_stats
DROP STATISTICS ab1_a_b_stats;
ERROR: must be owner of statistics object ab1_a_b_stats
ALTER STATISTICS ab1_a_b_stats RENAME TO ab1_a_b_stats_new;
ERROR: must be owner of statistics object ab1_a_b_stats
RESET SESSION AUTHORIZATION;
DROP ROLE temp_role;
CREATE STATISTICS IF NOT EXISTS ab1_a_b_stats ON a, b FROM ab1;
NOTICE: statistics object "ab1_a_b_stats" already exists, skipping
DROP STATISTICS ab1_a_b_stats;

9
src/test/regress/sql/stats_ext.sql
View File

@ -48,6 +48,15 @@ DROP TABLE ext_stats_test;
-- Ensure stats are dropped sanely, and test IF NOT EXISTS while at it
CREATE TABLE ab1 (a INTEGER, b INTEGER, c INTEGER);
CREATE STATISTICS IF NOT EXISTS ab1_a_b_stats ON a, b FROM ab1;
COMMENT ON STATISTICS ab1_a_b_stats IS 'new comment';
CREATE ROLE temp_role;
SET SESSION AUTHORIZATION temp_role;
COMMENT ON STATISTICS ab1_a_b_stats IS 'changed comment';
DROP STATISTICS ab1_a_b_stats;
ALTER STATISTICS ab1_a_b_stats RENAME TO ab1_a_b_stats_new;
RESET SESSION AUTHORIZATION;
DROP ROLE temp_role;
CREATE STATISTICS IF NOT EXISTS ab1_a_b_stats ON a, b FROM ab1;
DROP STATISTICS ab1_a_b_stats;