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MDEV-34078 Memory leak in InnoDB purge with 32-column PRIMARY KEY

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row_purge_reset_trx_id(): Reserve large enough offsets for accomodating
the maximum width PRIMARY KEY followed by DB_TRX_ID,DB_ROLL_PTR.

Reviewed by: Thirunarayanan Balathandayuthapani
This commit is contained in:
Marko Mäkelä 2024-10-01 18:35:39 +03:00
commit 464055fe65
3 changed files with 52 additions and 2 deletions
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2
storage/innobase/row/row0purge.cc
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@ -678,7 +678,7 @@ static void row_purge_reset_trx_id(purge_node_t* node, mtr_t* mtr)
mem_heap_t* heap = NULL;
/* Reserve enough offsets for the PRIMARY KEY and 2 columns
so that we can access DB_TRX_ID, DB_ROLL_PTR. */
rec_offs offsets_[REC_OFFS_HEADER_SIZE + MAX_REF_PARTS + 2];
rec_offs offsets_[REC_OFFS_HEADER_SIZE + MAX_REF_PARTS + 3];
rec_offs_init(offsets_);
rec_offs* offsets = rec_get_offsets(
rec, index, offsets_, index->n_core_fields,