Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps
 (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1poWtV-0001Kl-3a
	for pgsql-hackers@arkaria.postgresql.org; Mon, 17 Apr 2023 22:00:17 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.92)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1poWtT-0006cE-Kc
	for pgsql-hackers@arkaria.postgresql.org; Mon, 17 Apr 2023 22:00:15 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <pryzby@telsasoft.com>)
	id 1poWtT-0006c4-5x
	for pgsql-hackers@lists.postgresql.org; Mon, 17 Apr 2023 22:00:15 +0000
Received: from mail-io1-xd32.google.com ([2607:f8b0:4864:20::d32])
	by magus.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
	(Exim 4.94.2)
	(envelope-from <pryzby@telsasoft.com>)
	id 1poWtQ-003VUj-2Y
	for pgsql-hackers@postgresql.org; Mon, 17 Apr 2023 22:00:14 +0000
Received: by mail-io1-xd32.google.com with SMTP id
 ca18e2360f4ac-7606d6b3294so224107139f.2
        for <pgsql-hackers@postgresql.org>;
 Mon, 17 Apr 2023 15:00:11 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=telsasoft-com.20221208.gappssmtp.com; s=20221208; t=1681768810;
 x=1684360810;
        h=in-reply-to:content-disposition:mime-version:references:message-id
         :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to;
        bh=Xaejxn24JsnK2TchCIvMGl5EgcsGk4Jjd4YNjW1bQCM=;
        b=bGjKRTYrXQkM++Rmg1/wWWcOdOtixorWuZkAsX3gMJdasi1Xn4FWVJdc1bk7T0Ns5k
         f2U0q389VnKCKabAC9ubbZQ8V8h0X9bf6rI/aanRN3Qg5LM+cU7tm9H3YEq1fqz8eE2o
         usos0Mtf8ZMWkx0cvXak1L1YCCSsvp+4tfnnBsQe8HonvWFfDrSudRetdExzwplwTrUf
         eQ42CrO19y/8Cj8C5j5YqyCh1DGP0hPfuprIwXoD5NJ+CT0gagr4f3IVO2qjrs4Bim1C
         l7AymtzkaOVlbSM/J9SxoJ8eBevPj6wa9emcAuLn/mSlVN+s3vwV9UXjVZRQJ/7Na1L4
         MwUQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20221208; t=1681768810; x=1684360810;
        h=in-reply-to:content-disposition:mime-version:references:message-id
         :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date
         :message-id:reply-to;
        bh=Xaejxn24JsnK2TchCIvMGl5EgcsGk4Jjd4YNjW1bQCM=;
        b=UiW5CNoZQWC2yANd3fqvZbQqqummpGQkKqh5dMJKi71/dO6A3qI8kRLD2sClhBNza+
         7xB8vgQPYH4LPlqoKkl6+NAlCHNPOn8k9KGRTdv+VANT+o84bBwCoTr5uRCLkYRZLwwH
         XkC1QJeWbUPixMblWTNncm0Mjy4Y90WwA/i76L4+bxKJ2AVCI7JyjB1ssxkZbMGnWtr9
         cnjbKs2cFdohYYGGSzNpKA/NVdqYk1AMCfBOUqRqAa0SHMLrQfL5U1z2NgCPuhmX9VH9
         tJAs24Awj4Ch+LomRhFSJ04dXaATD1DOAnGIgvXRtOdxWmAxsy1G4A0Ec2i9+CA0j5f3
         Rrfw==
X-Gm-Message-State: AAQBX9cwBBps0hyC0w83Y2oB6WPoVrE/j0AZjjkFJ9guwLG7N0Hsczav
	L/QoAk+FWsL2NCyJAKwHF3DtUg==
X-Google-Smtp-Source: 
 AKy350aWNoaDx8aqTTJnb3OwoCWmT1beyG1us4Ug9eG8pYvHbVK2GQD4bVa1A2FLAny0vmLxWkEdsA==
X-Received: by 2002:a6b:6110:0:b0:763:5523:e89d with SMTP id
 v16-20020a6b6110000000b007635523e89dmr16171iob.18.1681768810025;
        Mon, 17 Apr 2023 15:00:10 -0700 (PDT)
Received: from pryzbyj.telsasoft (charmander.telsasoft.com. [50.244.222.1])
        by smtp.gmail.com with ESMTPSA id
 ci15-20020a0566383d8f00b0040fa75e5a3fsm1098259jab.132.2023.04.17.15.00.09
        (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
        Mon, 17 Apr 2023 15:00:09 -0700 (PDT)
Received: by pryzbyj.telsasoft (Postfix, from userid 1000)
	id 8BF89800594; Mon, 17 Apr 2023 17:00:08 -0500 (CDT)
Date: Mon, 17 Apr 2023 17:00:08 -0500
From: Justin Pryzby <pryzby@telsasoft.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Andres Freund <andres@anarazel.de>,
	Matthias van de Meent <boekewurm+postgres@gmail.com>,
	pgsql-hackers@postgresql.org
Subject: Re: v16dev: TRAP: failed Assert("size > SizeOfXLogRecord"), File:
 "xlog.c", Line: 1055, PID: 13564
Message-ID: <ZD3BaJGa0jDNLXGI@telsasoft.com>
References: <ZD1daibg4RF50IOj@telsasoft.com>
 <CAEze2Wg+Pbec3jaaUSF8E6Piy=bq=gXkFCFyaYwFDYTDjCMSvg@mail.gmail.com>
 <2444561.1681748021@sss.pgh.pa.us>
 <2454846.1681753830@sss.pgh.pa.us>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <2454846.1681753830@sss.pgh.pa.us>
List-Id: <pgsql-hackers.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-hackers@lists.postgresql.org>
List-Owner: <mailto:pgsql-hackers-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-hackers>
Archived-At: 
 <https://www.postgresql.org/message-id/ZD3BaJGa0jDNLXGI%40telsasoft.com>
Precedence: bulk

On Mon, Apr 17, 2023 at 01:50:30PM -0400, Tom Lane wrote:
> I wrote:
> > Yeah, I just came to the same conclusion.  One thing I don't understand
> > yet: log_newpage_range is old (it looks like this back to v12), and
> > that Assert is older, so why doesn't this reproduce further back?
> > Maybe the state where all the pages are new didn't happen before?
> 
> Bingo: bisecting shows the failure started at

Just curious: what "test" did you use to bisect with ?