On Tue, Apr 15, 2025 at 6:11 AM Andres Freund <and...@anarazel.de> wrote: > There very well could be a CFI - but it better be somewhere where the > in-memory state is consistent. Otherwise an error inside raised in the CFI > would lead the in-memory state inconsistent which then would cause problems > when cleaning up the dsa during resowner release or process exit. > > What am I missing here?
I think maybe you're only thinking about gathering the data. What about publishing it? If the DSA code were interrupted at a CFI and the interrupting code went and tried to perform a DSA allocation to store the resulting data and then returned to the interrupted DSA operation, would you expect the code to cope with that? I do not believe we have anywhere enough guarantees about reentrancy for that to be safe. -- Robert Haas EDB: http://www.enterprisedb.com
