Re: Inval reliability, especially for inplace updates

From: Noah Misch <noah(at)leadboat(dot)com>
To: Alexander Lakhin <exclusion(at)gmail(dot)com>
Cc: Paul A Jungwirth <pj(at)illuminatedcomputing(dot)com>, Nitin Motiani <nitinmotiani(at)google(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Ilyasov Ian <ianilyasov(at)outlook(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Surya Poondla <s_poondla(at)apple(dot)com>
Subject: Re: Inval reliability, especially for inplace updates
Date: 2025-12-18 18:30:57
Message-ID: 20251218183057.e6.nmisch@google.com
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On Wed, Dec 17, 2025 at 07:00:00AM +0200, Alexander Lakhin wrote:
> 17.12.2025 05:23, Noah Misch wrote:
> > I pushed the patch bundle to v17-v14. Thanks for the reviews! The
> > https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=dragonet&dt=2025-12-17%2001%3A34%3A36
> > "double free or corruption (!prev)" likely witnessed a defect in how I
> > back-patched this to v14. I am looking into it.
>
> Thank you for working on this!
>
> Regarding that failure, it's more or less known issue, not related to your
> commit:
> https://wiki.postgresql.org/wiki/Known_Buildfarm_Test_Failures#check-pg_upgrade_fails_on_LLVM-enabled_animals_due_to_double_free_or_corruption
> https://www.postgresql.org/message-id/flat/aPAl27_urHSODwRN%40paquier.xyz

Since v14 dragonet had never failed before, I was ready to assume it was new.
Thank you for highlighting the older issue. I agree.

Other buildfarm failures have been either abi-compliance-check (expected) or
unrelated, so I've closed https://commitfest.postgresql.org/patch/5091/. That
finishes the known-reachable inplace update corruption routes.

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