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From: Amit Langote <amitlangote09@gmail.com>
Date: Fri, 10 Apr 2026 13:14:11 +0900
Message-ID: 
 <CA+HiwqEdaCZMsLeLowxYpkWGZJgiVXW3vA3H+syDguCtj06ziw@mail.gmail.com>
Subject: Re: Eliminating SPI / SQL from some RI triggers - take 3
To: Sandro Santilli <strk@kbt.io>, Amit Langote <amitlangote09@gmail.com>,
 Tomas Vondra <tomas@vondra.me>,
	Junwang Zhao <zhjwpku@gmail.com>, Pavel Stehule <pavel.stehule@gmail.com>,
	PostgreSQL-development <pgsql-hackers@postgresql.org>
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 <https://www.postgresql.org/message-id/CA%2BHiwqEdaCZMsLeLowxYpkWGZJgiVXW3vA3H%2BsyDguCtj06ziw%40mail.gmail.com>
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Hi Sandro,

On Fri, Apr 10, 2026 at 1:02=E2=80=AFAM Sandro Santilli <strk@kbt.io> wrote=
:
> On Thu, Apr 09, 2026 at 08:55:01PM +0900, Amit Langote wrote:
> > Hi Sandro,
> >
> > On Thu, Apr 9, 2026 at 8:07=E2=80=AFPM Sandro Santilli <strk@kbt.io> wr=
ote:
> > > On Mon, Mar 02, 2026 at 01:34:41PM +0100, Tomas Vondra wrote:
> > > >
> > > > TBH I haven't noticed the memory context issue myself, I only notic=
ed
> > > > because the builds with index prefetch started crashing.
> > >
> > > We're getting a crash in PostGIS too, since that commit was merged in=
to
> > > the master branch, see https://trac.osgeo.org/postgis/ticket/6066
> > >
> > > The crash is triggered a C function using SPI.
> >
> > Evan Montgomery-Recht posted a report of the same issue on this thread
> > a couple of days ago.
>
> I confirm the patch attached in Evan's email [1] fixes the crash for us.
>
> [1] https://www.postgresql.org/message-id/CAEg7pwcKf01FmDqFAf-Hzu_pYnMYSc=
Y_Otid-pe9uw3BJ6gq9g%40mail.gmail.com
>
> > I have posted a patch to fix the issue, which I will commit tomorrow
> > after a bit more testing.
>
> I also confirm your patch v4-0001-Fix-RI-fast-path-crash-under-nested-C-l=
evel-SPI.patch
> fixes the crash for us. Thank you !

Thanks for confirming that.

> Let me know when it is time to test again against master.

I have just pushed 0001 which you'll find in master as 34a3078629.

--=20
Thanks, Amit Langote