From 7ca80f33b806e2b322e9631e01046173b276e87e Mon Sep 17 00:00:00 2001 From: Pierre Forstmann Date: Fri, 21 Aug 2026 13:56:29 +0200 Subject: [PATCH] v1-0001-Fix-memory-allocation-check --- src/backend/partitioning/partbounds.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c index 865a92c8561..15ab0f715d4 100644 --- a/src/backend/partitioning/partbounds.c +++ b/src/backend/partitioning/partbounds.c @@ -2918,6 +2918,14 @@ check_new_partition_bound(char *relname, Relation parent, Assert(spec->strategy == PARTITION_STRATEGY_HASH); Assert(spec->remainder >= 0 && spec->remainder < spec->modulus); + /* Check needed memory that will be allocated in create_hash_bounds() */ + if (spec->modulus * sizeof(int) > MaxAllocSize) + ereport(ERROR, (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), + (errmsg("hash partitions bounds are too large"), + errdetail("Creating hash partitions for modulus %d would require too much memory.", spec->modulus), + errhint("Reduce the number of partitions.")))); + + if (partdesc->nparts > 0) { int greatest_modulus; @@ -3030,8 +3038,10 @@ check_new_partition_bound(char *relname, Relation parent, } remainder += spec->modulus; } while (remainder < greatest_modulus); + } + break; } -- 2.47.3