Date: Fri, 24 Jul 2020 12:05:35 -0400
From: Stephen Frost <sfrost@snowman.net>
To: pgsql-hackers@lists.postgresql.org
Subject: Missing CFI in hlCover()?
Message-ID: <20200724160535.GW12375@tamriel.snowman.net>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature"; boundary="NzGUbf6j8lrSeJQO"
Content-Disposition: inline
User-Agent: Mutt/1.5.24 (2015-08-30)
Precedence: bulk


--NzGUbf6j8lrSeJQO
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

Greetings,

I'm looking into an issue that we're seeing on the PG archives server
with runaway queries that don't seem to ever want to end- and ignore
signals.

This is PG11, 11.8-1.pgdg100+1 specifically on Debian/buster and what
we're seeing is the loop in hlCover() (wparser_def.c:2071 to 2093) is
lasting an awful long time without any CFI call.  It's possible the CFI
call should actually go elsewhere, but the complete lack of any CFI in
wparser_def.c or tsvector_op.c seems a bit concerning.

I'm suspicious there's something else going on here that's causing this
to take a long time but I don't have any smoking gun as yet.

Thanks,

Stephen

--NzGUbf6j8lrSeJQO
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=woAt
-----END PGP SIGNATURE-----

--NzGUbf6j8lrSeJQO--