Re: CREATE INDEX CONCURRENTLY does not index prepared xact's data

From: Noah Misch <noah(at)leadboat(dot)com>
To: Semab Tariq <semab(dot)tariq(at)enterprisedb(dot)com>
Cc: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Sandeep Thakkar <sandeep(dot)thakkar(at)enterprisedb(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Andres Freund <andres(at)anarazel(dot)de>, CM Team <cm(at)enterprisedb(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>, Michael Paquier <michael(at)paquier(dot)xyz>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Geoghegan <pg(at)bowt(dot)ie>
Subject: Re: CREATE INDEX CONCURRENTLY does not index prepared xact's data
Date: 2021-11-05 11:22:36
Message-ID: 20211105112236.GA711250@rfd.leadboat.com
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On Fri, Nov 05, 2021 at 03:21:15PM +0500, Semab Tariq wrote:
> Breakpoint 1, 0x40000000003fcb50:0 in equalTupleDescs (
> tupdesc1=0x40010006f968, tupdesc2=0x87ffffffffffac50)

The addresses there are weird. tupdesc1 is neither a stack address nor a heap
address; it may be in a program text section. tupdesc2 is a stack address.
In the earlier stack trace from
https://postgr.es/m/CANFyU94Xa8a5+4sZ7PxOiDLq+yN89g6y-9nNk-eLEvX6YUXbXA@mail.gmail.com
both tupdesc1 and tupdesc2 were heap addresses.

> /home/pgbfarm/buildroot-gharial-HEAD/postgresql/src/test/subscription/tmp_check/t_080_step_equalTupleDescs_main_data/commands-gdb:8: Error in sourced command file:
> Error accessing memory address 0x40010006f968: Bad address.

Thanks. Please try the attached test version, which avoids exiting too early
like the last version did.

Attachment Content-Type Size
step-to-crash-v0.2.patch text/plain 2.7 KB

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