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Comment on expectations for AutoVacuumWorkItem handlers.

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This might prevent a repeat of the brin_summarize_range() vulnerability
that commit a117cebd63 fixed.
This commit is contained in:
Noah Misch
2023-03-25 13:00:27 -07:00
parent 27f5c712b2
commit e33967b13b
1 changed files with 4 additions and 1 deletions
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5
src/backend/postmaster/autovacuum.c
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@@ -2655,7 +2655,10 @@ perform_work_item(AutoVacuumWorkItem *workitem)
/* Use PortalContext for any per-work-item allocations */ /* Use PortalContext for any per-work-item allocations */
MemoryContextSwitchTo(PortalContext); MemoryContextSwitchTo(PortalContext);
/* have at it */ /*
* Have at it. Functions called here are responsible for any required
* user switch and sandbox.
*/
switch (workitem->avw_type) switch (workitem->avw_type)
{ {
case AVW_BRINSummarizeRange: case AVW_BRINSummarizeRange: