Re: BUG #17619: AllocSizeIsValid violation in parallel hash join

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От Peter Geoghegan
Тема Re: BUG #17619: AllocSizeIsValid violation in parallel hash join
Дата
Msg-id CAH2-Wzk+wEsNxXJwt=jHpExbBFh+vLnyfJ7CcNqMmnGkiQvFKw@mail.gmail.com
обсуждение исходный текст
Ответ на Re: BUG #17619: AllocSizeIsValid violation in parallel hash join  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: BUG #17619: AllocSizeIsValid violation in parallel hash join  (Peter Geoghegan <pg@bowt.ie>)
Список pgsql-bugs
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On Fri, Sep 23, 2022 at 4:19 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> That's a fairly scary observation.  What other places are silently
> expecting such memory to be zeroed?  Do we need to fix things so
> that min_dynamic_shared_memory doesn't break this API?

Reminds me of the recent parallel VACUUM bug, fixed by commit
662ba729. That involved unintialized DSM, too.

As I said at the time: we should be using Valgrind for this.

-- 
Peter Geoghegan

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