mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-13 04:13:22 +02:00
feeb526cfe
ExecOpenScanRelation assumed that any relation listed in the ExecRowMark list has been locked by InitPlan; but this is not true if the rel's markType is ROW_MARK_COPY, which is possible if it's a foreign table. In most (possibly all) cases, failure to acquire a lock here isn't really problematic because the parser, planner, or plancache would have taken the appropriate lock already. In principle though it might leave us vulnerable to working with a relation that we hold no lock on, and in any case if the executor isn't depending on previously-taken locks otherwise then it should not do so for ROW_MARK_COPY relations. Noted by Etsuro Fujita. Back-patch to all active versions, since the inconsistency has been there a long time. (It's almost certainly irrelevant in 9.0, since that predates foreign tables, but the code's still wrong on its own terms.) |
||
|---|---|---|
| .. | ||
| access | ||
| bootstrap | ||
| catalog | ||
| commands | ||
| executor | ||
| foreign | ||
| lib | ||
| libpq | ||
| main | ||
| nodes | ||
| optimizer | ||
| parser | ||
| po | ||
| port | ||
| postmaster | ||
| regex | ||
| replication | ||
| rewrite | ||
| snowball | ||
| storage | ||
| tcop | ||
| tsearch | ||
| utils | ||
| .gitignore | ||
| common.mk | ||
| Makefile | ||
| nls.mk | ||