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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: Dilip Kumar <dilipbalaut@gmail.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: Ashutosh Sharma <ashu.coek88@gmail.com>
Cc: Maciek Sakrejda <m.sakrejda@gmail.com>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Andrew Dunstan <andrew@dunslane.net>
Cc: Heikki Linnakangas <hlinnaka@iki.fi>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: [Proposal] Fully WAL logged CREATE DATABASE - No Checkpoints
Date: Tue, 02 Aug 2022 17:46:34 -0400
Message-ID: <2767668.1659476794@sss.pgh.pa.us> (raw)
In-Reply-To: <CA+TgmobZufK6PcCRpvjP6dJqOBO-woWZF0cqMHWGvzkbgeaBKw@mail.gmail.com>
References: <CAFiTN-tb2Ot=pgqawNn3kW6nAKAiAHO9e4TRgDPgCPR3Uu40tA@mail.gmail.com>
	<CAFiTN-uZXh9R=fYyR1+z6Gszeu2SCQwKhrUqGu23O9vOh7sipg@mail.gmail.com>
	<CA+TgmoYtcdxBjLh31DLxUXHxFVMPGzrU5_T=CYCvRyFHywSBUQ@mail.gmail.com>
	<CAFiTN-uzLbV17OwcyJSLrEGEBF0YzMsRkobRD5Y_kE8M7xoAtw@mail.gmail.com>
	<CA+TgmoZHDwEjPHO6RceWZZ5L1FeJ4_VEi0t39rnWFBAbnoq53w@mail.gmail.com>
	<CAFiTN-sdxdSYObqO7-LYy=7tAB1zamT3trPq7ukfupKPMnjYdg@mail.gmail.com>
	<CAFiTN-ujhw-ttQ9-1pdcXtSn3mxhKCBQYvQsq=hQHQZwSn4xjQ@mail.gmail.com>
	<CAFiTN-tSUj56cyS6a88sgn3MWJBOA_VjEQfc7fZmWicKwijraA@mail.gmail.com>
	<CA+TgmoYVDLtS0v6XNTk=xBVStjZu_XaS5FTY74neb_h8YOcF0w@mail.gmail.com>
	<CA+TgmobUW9NQK7EJkV_0F87bqqq5BSHKiX2+wfthLcy4qA7YvQ@mail.gmail.com>
	<20220802175043.GA13682@telsasoft.com>
	<CA+TgmobZufK6PcCRpvjP6dJqOBO-woWZF0cqMHWGvzkbgeaBKw@mail.gmail.com>

Robert Haas <robertmhaas@gmail.com> writes:
> WARNING:  problem in alloc set PortalContext: req size > alloc size
> for chunk 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad size 0 for chunk
> 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad single-chunk
> 0x7f9950891208 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: found inconsistent
> memory block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: req size > alloc size
> for chunk 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad size 0 for chunk
> 0x7f99508911f0 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: bad single-chunk
> 0x7f9950891208 in block 0x7f9950890800
> WARNING:  problem in alloc set PortalContext: found inconsistent
> memory block 0x7f9950890800

This looks like nothing so much as the fallout from something scribbling
past the end of an allocated palloc chunk, or perhaps writing on
already-freed space.  Perhaps running the test case under valgrind
would help to finger the culprit.

			regards, tom lane





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