Re: Return pg_control from pg_backup_stop().

On Wed, Oct 28, 2026 at 08:56:25AM +0000, David Steele wrote:
> I've CC'd billbug's owner. The HEAD run with the 2026-10-28 04:00 UTC
> snapshot crashed a client backend (PID 1498) running BASE_BACKUP with
> SIGSEGV during src/bin/pg_basebackup/t/010_pg_basebackup.pl, but no
> backtrace made it into the logs. Could you check whether a core file was
> written and get a backtrace from it? If no core was written then the
> coreadm settings may be redirecting or suppressing it. Any additional info
> you can provide would be greatly appreciated.

We have what looks like a second report on HEAD and v19, different
pattern:
https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=thorntail&dt=2026-10-28%2006%3A31%3A23&stg=recovery-check

From 001's primary logs:
2026-10-28 10:44:13.113 MSK [1706208:4] LOG: client backend (PID
1706227) was terminated by signal 10: Bus error
2026-10-28 10:44:13.113 MSK [1706208:5] DETAIL: Failed process was
running: BASE_BACKUP (CHECKPOINT 'fast', MAX_RATE 32);

If something else is going on, I'm not quite sure what it is yet.
--
Michael